libpcsxcore/new_dynarec/new_dynarec.c

   1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   2  *   Mupen64plus - new_dynarec.c                                           *
   3  *   Copyright (C) 2009-2011 Ari64                                         *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
  19  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  20
  21 #include <stdlib.h>
  22 #include <stdint.h> //include for uint64_t
  23 #include <assert.h>
  24 #include <sys/mman.h>
  25
  26 #include "emu_if.h" //emulator interface
  27
  28 //#define DISASM
  29 //#define assem_debug printf
  30 //#define inv_debug printf
  31 #define assem_debug(...)
  32 #define inv_debug(...)
  33
  34 #ifdef __i386__
  35 #include "assem_x86.h"
  36 #endif
  37 #ifdef __x86_64__
  38 #include "assem_x64.h"
  39 #endif
  40 #ifdef __arm__
  41 #include "assem_arm.h"
  42 #endif
  43
  44 #define MAXBLOCK 4096
  45 #define MAX_OUTPUT_BLOCK_SIZE 262144
  46
  47 struct regstat
  48 {
  49   signed char regmap_entry[HOST_REGS];
  50   signed char regmap[HOST_REGS];
  51   uint64_t was32;
  52   uint64_t is32;
  53   uint64_t wasdirty;
  54   uint64_t dirty;
  55   uint64_t u;
  56   uint64_t uu;
  57   u_int wasconst;
  58   u_int isconst;
  59   u_int loadedconst;             // host regs that have constants loaded
  60   u_int waswritten;              // MIPS regs that were used as store base before
  61 };
  62
  63 struct ll_entry
  64 {
  65   u_int vaddr;
  66   u_int reg32;
  67   void *addr;
  68   struct ll_entry *next;
  69 };
  70
  71   u_int start;
  72   u_int *source;
  73   u_int pagelimit;
  74   char insn[MAXBLOCK][10];
  75   u_char itype[MAXBLOCK];
  76   u_char opcode[MAXBLOCK];
  77   u_char opcode2[MAXBLOCK];
  78   u_char bt[MAXBLOCK];
  79   u_char rs1[MAXBLOCK];
  80   u_char rs2[MAXBLOCK];
  81   u_char rt1[MAXBLOCK];
  82   u_char rt2[MAXBLOCK];
  83   u_char us1[MAXBLOCK];
  84   u_char us2[MAXBLOCK];
  85   u_char dep1[MAXBLOCK];
  86   u_char dep2[MAXBLOCK];
  87   u_char lt1[MAXBLOCK];
  88   static uint64_t gte_rs[MAXBLOCK]; // gte: 32 data and 32 ctl regs
  89   static uint64_t gte_rt[MAXBLOCK];
  90   static uint64_t gte_unneeded[MAXBLOCK];
  91   static u_int smrv[32]; // speculated MIPS register values
  92   static u_int smrv_strong; // mask or regs that are likely to have correct values
  93   static u_int smrv_weak; // same, but somewhat less likely
  94   static u_int smrv_strong_next; // same, but after current insn executes
  95   static u_int smrv_weak_next;
  96   int imm[MAXBLOCK];
  97   u_int ba[MAXBLOCK];
  98   char likely[MAXBLOCK];
  99   char is_ds[MAXBLOCK];
 100   char ooo[MAXBLOCK];
 101   uint64_t unneeded_reg[MAXBLOCK];
 102   uint64_t unneeded_reg_upper[MAXBLOCK];
 103   uint64_t branch_unneeded_reg[MAXBLOCK];
 104   uint64_t branch_unneeded_reg_upper[MAXBLOCK];
 105   uint64_t p32[MAXBLOCK];
 106   uint64_t pr32[MAXBLOCK];
 107   signed char regmap_pre[MAXBLOCK][HOST_REGS];
 108   static uint64_t current_constmap[HOST_REGS];
 109   static uint64_t constmap[MAXBLOCK][HOST_REGS];
 110   static struct regstat regs[MAXBLOCK];
 111   static struct regstat branch_regs[MAXBLOCK];
 112   signed char minimum_free_regs[MAXBLOCK];
 113   u_int needed_reg[MAXBLOCK];
 114   uint64_t requires_32bit[MAXBLOCK];
 115   u_int wont_dirty[MAXBLOCK];
 116   u_int will_dirty[MAXBLOCK];
 117   int ccadj[MAXBLOCK];
 118   int slen;
 119   u_int instr_addr[MAXBLOCK];
 120   u_int link_addr[MAXBLOCK][3];
 121   int linkcount;
 122   u_int stubs[MAXBLOCK*3][8];
 123   int stubcount;
 124   u_int literals[1024][2];
 125   int literalcount;
 126   int is_delayslot;
 127   int cop1_usable;
 128   u_char *out;
 129   struct ll_entry *jump_in[4096];
 130   struct ll_entry *jump_out[4096];
 131   struct ll_entry *jump_dirty[4096];
 132   u_int hash_table[65536][4]  __attribute__((aligned(16)));
 133   char shadow[1048576]  __attribute__((aligned(16)));
 134   void *copy;
 135   int expirep;
 136 #ifndef PCSX
 137   u_int using_tlb;
 138 #else
 139   static const u_int using_tlb=0;
 140 #endif
 141   int new_dynarec_did_compile;
 142   int new_dynarec_hacks;
 143   u_int stop_after_jal;
 144   extern u_char restore_candidate[512];
 145   extern int cycle_count;
 146
 147   /* registers that may be allocated */
 148   /* 1-31 gpr */
 149 #define HIREG 32 // hi
 150 #define LOREG 33 // lo
 151 #define FSREG 34 // FPU status (FCSR)
 152 #define CSREG 35 // Coprocessor status
 153 #define CCREG 36 // Cycle count
 154 #define INVCP 37 // Pointer to invalid_code
 155 #define MMREG 38 // Pointer to memory_map
 156 #define ROREG 39 // ram offset (if rdram!=0x80000000)
 157 #define TEMPREG 40
 158 #define FTEMP 40 // FPU temporary register
 159 #define PTEMP 41 // Prefetch temporary register
 160 #define TLREG 42 // TLB mapping offset
 161 #define RHASH 43 // Return address hash
 162 #define RHTBL 44 // Return address hash table address
 163 #define RTEMP 45 // JR/JALR address register
 164 #define MAXREG 45
 165 #define AGEN1 46 // Address generation temporary register
 166 #define AGEN2 47 // Address generation temporary register
 167 #define MGEN1 48 // Maptable address generation temporary register
 168 #define MGEN2 49 // Maptable address generation temporary register
 169 #define BTREG 50 // Branch target temporary register
 170
 171   /* instruction types */
 172 #define NOP 0     // No operation
 173 #define LOAD 1    // Load
 174 #define STORE 2   // Store
 175 #define LOADLR 3  // Unaligned load
 176 #define STORELR 4 // Unaligned store
 177 #define MOV 5     // Move
 178 #define ALU 6     // Arithmetic/logic
 179 #define MULTDIV 7 // Multiply/divide
 180 #define SHIFT 8   // Shift by register
 181 #define SHIFTIMM 9// Shift by immediate
 182 #define IMM16 10  // 16-bit immediate
 183 #define RJUMP 11  // Unconditional jump to register
 184 #define UJUMP 12  // Unconditional jump
 185 #define CJUMP 13  // Conditional branch (BEQ/BNE/BGTZ/BLEZ)
 186 #define SJUMP 14  // Conditional branch (regimm format)
 187 #define COP0 15   // Coprocessor 0
 188 #define COP1 16   // Coprocessor 1
 189 #define C1LS 17   // Coprocessor 1 load/store
 190 #define FJUMP 18  // Conditional branch (floating point)
 191 #define FLOAT 19  // Floating point unit
 192 #define FCONV 20  // Convert integer to float
 193 #define FCOMP 21  // Floating point compare (sets FSREG)
 194 #define SYSCALL 22// SYSCALL
 195 #define OTHER 23  // Other
 196 #define SPAN 24   // Branch/delay slot spans 2 pages
 197 #define NI 25     // Not implemented
 198 #define HLECALL 26// PCSX fake opcodes for HLE
 199 #define COP2 27   // Coprocessor 2 move
 200 #define C2LS 28   // Coprocessor 2 load/store
 201 #define C2OP 29   // Coprocessor 2 operation
 202 #define INTCALL 30// Call interpreter to handle rare corner cases
 203
 204   /* stubs */
 205 #define CC_STUB 1
 206 #define FP_STUB 2
 207 #define LOADB_STUB 3
 208 #define LOADH_STUB 4
 209 #define LOADW_STUB 5
 210 #define LOADD_STUB 6
 211 #define LOADBU_STUB 7
 212 #define LOADHU_STUB 8
 213 #define STOREB_STUB 9
 214 #define STOREH_STUB 10
 215 #define STOREW_STUB 11
 216 #define STORED_STUB 12
 217 #define STORELR_STUB 13
 218 #define INVCODE_STUB 14
 219
 220   /* branch codes */
 221 #define TAKEN 1
 222 #define NOTTAKEN 2
 223 #define NULLDS 3
 224
 225 // asm linkage
 226 int new_recompile_block(int addr);
 227 void *get_addr_ht(u_int vaddr);
 228 void invalidate_block(u_int block);
 229 void invalidate_addr(u_int addr);
 230 void remove_hash(int vaddr);
 231 void jump_vaddr();
 232 void dyna_linker();
 233 void dyna_linker_ds();
 234 void verify_code();
 235 void verify_code_vm();
 236 void verify_code_ds();
 237 void cc_interrupt();
 238 void fp_exception();
 239 void fp_exception_ds();
 240 void jump_syscall();
 241 void jump_syscall_hle();
 242 void jump_eret();
 243 void jump_hlecall();
 244 void jump_intcall();
 245 void new_dyna_leave();
 246
 247 // TLB
 248 void TLBWI_new();
 249 void TLBWR_new();
 250 void read_nomem_new();
 251 void read_nomemb_new();
 252 void read_nomemh_new();
 253 void read_nomemd_new();
 254 void write_nomem_new();
 255 void write_nomemb_new();
 256 void write_nomemh_new();
 257 void write_nomemd_new();
 258 void write_rdram_new();
 259 void write_rdramb_new();
 260 void write_rdramh_new();
 261 void write_rdramd_new();
 262 extern u_int memory_map[1048576];
 263
 264 // Needed by assembler
 265 void wb_register(signed char r,signed char regmap[],uint64_t dirty,uint64_t is32);
 266 void wb_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty);
 267 void wb_needed_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr);
 268 void load_all_regs(signed char i_regmap[]);
 269 void load_needed_regs(signed char i_regmap[],signed char next_regmap[]);
 270 void load_regs_entry(int t);
 271 void load_all_consts(signed char regmap[],int is32,u_int dirty,int i);
 272
 273 int tracedebug=0;
 274
 275 //#define DEBUG_CYCLE_COUNT 1
 276
 277 int cycle_multiplier; // 100 for 1.0
 278
 279 static int CLOCK_ADJUST(int x)
 280 {
 281   int s=(x>>31)|1;
 282   return (x * cycle_multiplier + s * 50) / 100;
 283 }
 284
 285 static void tlb_hacks()
 286 {
 287 #ifndef DISABLE_TLB
 288   // Goldeneye hack
 289   if (strncmp((char *) ROM_HEADER->nom, "GOLDENEYE",9) == 0)
 290   {
 291     u_int addr;
 292     int n;
 293     switch (ROM_HEADER->Country_code&0xFF)
 294     {
 295       case 0x45: // U
 296         addr=0x34b30;
 297         break;
 298       case 0x4A: // J
 299         addr=0x34b70;
 300         break;
 301       case 0x50: // E
 302         addr=0x329f0;
 303         break;
 304       default:
 305         // Unknown country code
 306         addr=0;
 307         break;
 308     }
 309     u_int rom_addr=(u_int)rom;
 310     #ifdef ROM_COPY
 311     // Since memory_map is 32-bit, on 64-bit systems the rom needs to be
 312     // in the lower 4G of memory to use this hack.  Copy it if necessary.
 313     if((void *)rom>(void *)0xffffffff) {
 314       munmap(ROM_COPY, 67108864);
 315       if(mmap(ROM_COPY, 12582912,
 316               PROT_READ | PROT_WRITE,
 317               MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
 318               -1, 0) <= 0) {printf("mmap() failed\n");}
 319       memcpy(ROM_COPY,rom,12582912);
 320       rom_addr=(u_int)ROM_COPY;
 321     }
 322     #endif
 323     if(addr) {
 324       for(n=0x7F000;n<0x80000;n++) {
 325         memory_map[n]=(((u_int)(rom_addr+addr-0x7F000000))>>2)|0x40000000;
 326       }
 327     }
 328   }
 329 #endif
 330 }
 331
 332 static u_int get_page(u_int vaddr)
 333 {
 334 #ifndef PCSX
 335   u_int page=(vaddr^0x80000000)>>12;
 336 #else
 337   u_int page=vaddr&~0xe0000000;
 338   if (page < 0x1000000)
 339     page &= ~0x0e00000; // RAM mirrors
 340   page>>=12;
 341 #endif
 342 #ifndef DISABLE_TLB
 343   if(page>262143&&tlb_LUT_r[vaddr>>12]) page=(tlb_LUT_r[vaddr>>12]^0x80000000)>>12;
 344 #endif
 345   if(page>2048) page=2048+(page&2047);
 346   return page;
 347 }
 348
 349 #ifndef PCSX
 350 static u_int get_vpage(u_int vaddr)
 351 {
 352   u_int vpage=(vaddr^0x80000000)>>12;
 353 #ifndef DISABLE_TLB
 354   if(vpage>262143&&tlb_LUT_r[vaddr>>12]) vpage&=2047; // jump_dirty uses a hash of the virtual address instead
 355 #endif
 356   if(vpage>2048) vpage=2048+(vpage&2047);
 357   return vpage;
 358 }
 359 #else
 360 // no virtual mem in PCSX
 361 static u_int get_vpage(u_int vaddr)
 362 {
 363   return get_page(vaddr);
 364 }
 365 #endif
 366
 367 // Get address from virtual address
 368 // This is called from the recompiled JR/JALR instructions
 369 void *get_addr(u_int vaddr)
 370 {
 371   u_int page=get_page(vaddr);
 372   u_int vpage=get_vpage(vaddr);
 373   struct ll_entry *head;
 374   //printf("TRACE: count=%d next=%d (get_addr %x,page %d)\n",Count,next_interupt,vaddr,page);
 375   head=jump_in[page];
 376   while(head!=NULL) {
 377     if(head->vaddr==vaddr&&head->reg32==0) {
 378   //printf("TRACE: count=%d next=%d (get_addr match %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
 379       int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 380       ht_bin[3]=ht_bin[1];
 381       ht_bin[2]=ht_bin[0];
 382       ht_bin[1]=(int)head->addr;
 383       ht_bin[0]=vaddr;
 384       return head->addr;
 385     }
 386     head=head->next;
 387   }
 388   head=jump_dirty[vpage];
 389   while(head!=NULL) {
 390     if(head->vaddr==vaddr&&head->reg32==0) {
 391       //printf("TRACE: count=%d next=%d (get_addr match dirty %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
 392       // Don't restore blocks which are about to expire from the cache
 393       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
 394       if(verify_dirty(head->addr)) {
 395         //printf("restore candidate: %x (%d) d=%d\n",vaddr,page,invalid_code[vaddr>>12]);
 396         invalid_code[vaddr>>12]=0;
 397         inv_code_start=inv_code_end=~0;
 398 #ifndef DISABLE_TLB
 399         memory_map[vaddr>>12]|=0x40000000;
 400 #endif
 401         if(vpage<2048) {
 402 #ifndef DISABLE_TLB
 403           if(tlb_LUT_r[vaddr>>12]) {
 404             invalid_code[tlb_LUT_r[vaddr>>12]>>12]=0;
 405             memory_map[tlb_LUT_r[vaddr>>12]>>12]|=0x40000000;
 406           }
 407 #endif
 408           restore_candidate[vpage>>3]|=1<<(vpage&7);
 409         }
 410         else restore_candidate[page>>3]|=1<<(page&7);
 411         int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 412         if(ht_bin[0]==vaddr) {
 413           ht_bin[1]=(int)head->addr; // Replace existing entry
 414         }
 415         else
 416         {
 417           ht_bin[3]=ht_bin[1];
 418           ht_bin[2]=ht_bin[0];
 419           ht_bin[1]=(int)head->addr;
 420           ht_bin[0]=vaddr;
 421         }
 422         return head->addr;
 423       }
 424     }
 425     head=head->next;
 426   }
 427   //printf("TRACE: count=%d next=%d (get_addr no-match %x)\n",Count,next_interupt,vaddr);
 428   int r=new_recompile_block(vaddr);
 429   if(r==0) return get_addr(vaddr);
 430   // Execute in unmapped page, generate pagefault execption
 431   Status|=2;
 432   Cause=(vaddr<<31)|0x8;
 433   EPC=(vaddr&1)?vaddr-5:vaddr;
 434   BadVAddr=(vaddr&~1);
 435   Context=(Context&0xFF80000F)|((BadVAddr>>9)&0x007FFFF0);
 436   EntryHi=BadVAddr&0xFFFFE000;
 437   return get_addr_ht(0x80000000);
 438 }
 439 // Look up address in hash table first
 440 void *get_addr_ht(u_int vaddr)
 441 {
 442   //printf("TRACE: count=%d next=%d (get_addr_ht %x)\n",Count,next_interupt,vaddr);
 443   int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 444   if(ht_bin[0]==vaddr) return (void *)ht_bin[1];
 445   if(ht_bin[2]==vaddr) return (void *)ht_bin[3];
 446   return get_addr(vaddr);
 447 }
 448
 449 void *get_addr_32(u_int vaddr,u_int flags)
 450 {
 451 #ifdef FORCE32
 452   return get_addr(vaddr);
 453 #else
 454   //printf("TRACE: count=%d next=%d (get_addr_32 %x,flags %x)\n",Count,next_interupt,vaddr,flags);
 455   int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 456   if(ht_bin[0]==vaddr) return (void *)ht_bin[1];
 457   if(ht_bin[2]==vaddr) return (void *)ht_bin[3];
 458   u_int page=get_page(vaddr);
 459   u_int vpage=get_vpage(vaddr);
 460   struct ll_entry *head;
 461   head=jump_in[page];
 462   while(head!=NULL) {
 463     if(head->vaddr==vaddr&&(head->reg32&flags)==0) {
 464       //printf("TRACE: count=%d next=%d (get_addr_32 match %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
 465       if(head->reg32==0) {
 466         int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 467         if(ht_bin[0]==-1) {
 468           ht_bin[1]=(int)head->addr;
 469           ht_bin[0]=vaddr;
 470         }else if(ht_bin[2]==-1) {
 471           ht_bin[3]=(int)head->addr;
 472           ht_bin[2]=vaddr;
 473         }
 474         //ht_bin[3]=ht_bin[1];
 475         //ht_bin[2]=ht_bin[0];
 476         //ht_bin[1]=(int)head->addr;
 477         //ht_bin[0]=vaddr;
 478       }
 479       return head->addr;
 480     }
 481     head=head->next;
 482   }
 483   head=jump_dirty[vpage];
 484   while(head!=NULL) {
 485     if(head->vaddr==vaddr&&(head->reg32&flags)==0) {
 486       //printf("TRACE: count=%d next=%d (get_addr_32 match dirty %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
 487       // Don't restore blocks which are about to expire from the cache
 488       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
 489       if(verify_dirty(head->addr)) {
 490         //printf("restore candidate: %x (%d) d=%d\n",vaddr,page,invalid_code[vaddr>>12]);
 491         invalid_code[vaddr>>12]=0;
 492         inv_code_start=inv_code_end=~0;
 493         memory_map[vaddr>>12]|=0x40000000;
 494         if(vpage<2048) {
 495 #ifndef DISABLE_TLB
 496           if(tlb_LUT_r[vaddr>>12]) {
 497             invalid_code[tlb_LUT_r[vaddr>>12]>>12]=0;
 498             memory_map[tlb_LUT_r[vaddr>>12]>>12]|=0x40000000;
 499           }
 500 #endif
 501           restore_candidate[vpage>>3]|=1<<(vpage&7);
 502         }
 503         else restore_candidate[page>>3]|=1<<(page&7);
 504         if(head->reg32==0) {
 505           int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
 506           if(ht_bin[0]==-1) {
 507             ht_bin[1]=(int)head->addr;
 508             ht_bin[0]=vaddr;
 509           }else if(ht_bin[2]==-1) {
 510             ht_bin[3]=(int)head->addr;
 511             ht_bin[2]=vaddr;
 512           }
 513           //ht_bin[3]=ht_bin[1];
 514           //ht_bin[2]=ht_bin[0];
 515           //ht_bin[1]=(int)head->addr;
 516           //ht_bin[0]=vaddr;
 517         }
 518         return head->addr;
 519       }
 520     }
 521     head=head->next;
 522   }
 523   //printf("TRACE: count=%d next=%d (get_addr_32 no-match %x,flags %x)\n",Count,next_interupt,vaddr,flags);
 524   int r=new_recompile_block(vaddr);
 525   if(r==0) return get_addr(vaddr);
 526   // Execute in unmapped page, generate pagefault execption
 527   Status|=2;
 528   Cause=(vaddr<<31)|0x8;
 529   EPC=(vaddr&1)?vaddr-5:vaddr;
 530   BadVAddr=(vaddr&~1);
 531   Context=(Context&0xFF80000F)|((BadVAddr>>9)&0x007FFFF0);
 532   EntryHi=BadVAddr&0xFFFFE000;
 533   return get_addr_ht(0x80000000);
 534 #endif
 535 }
 536
 537 void clear_all_regs(signed char regmap[])
 538 {
 539   int hr;
 540   for (hr=0;hr<HOST_REGS;hr++) regmap[hr]=-1;
 541 }
 542
 543 signed char get_reg(signed char regmap[],int r)
 544 {
 545   int hr;
 546   for (hr=0;hr<HOST_REGS;hr++) if(hr!=EXCLUDE_REG&&regmap[hr]==r) return hr;
 547   return -1;
 548 }
 549
 550 // Find a register that is available for two consecutive cycles
 551 signed char get_reg2(signed char regmap1[],signed char regmap2[],int r)
 552 {
 553   int hr;
 554   for (hr=0;hr<HOST_REGS;hr++) if(hr!=EXCLUDE_REG&&regmap1[hr]==r&&regmap2[hr]==r) return hr;
 555   return -1;
 556 }
 557
 558 int count_free_regs(signed char regmap[])
 559 {
 560   int count=0;
 561   int hr;
 562   for(hr=0;hr<HOST_REGS;hr++)
 563   {
 564     if(hr!=EXCLUDE_REG) {
 565       if(regmap[hr]<0) count++;
 566     }
 567   }
 568   return count;
 569 }
 570
 571 void dirty_reg(struct regstat *cur,signed char reg)
 572 {
 573   int hr;
 574   if(!reg) return;
 575   for (hr=0;hr<HOST_REGS;hr++) {
 576     if((cur->regmap[hr]&63)==reg) {
 577       cur->dirty|=1<<hr;
 578     }
 579   }
 580 }
 581
 582 // If we dirty the lower half of a 64 bit register which is now being
 583 // sign-extended, we need to dump the upper half.
 584 // Note: Do this only after completion of the instruction, because
 585 // some instructions may need to read the full 64-bit value even if
 586 // overwriting it (eg SLTI, DSRA32).
 587 static void flush_dirty_uppers(struct regstat *cur)
 588 {
 589   int hr,reg;
 590   for (hr=0;hr<HOST_REGS;hr++) {
 591     if((cur->dirty>>hr)&1) {
 592       reg=cur->regmap[hr];
 593       if(reg>=64)
 594         if((cur->is32>>(reg&63))&1) cur->regmap[hr]=-1;
 595     }
 596   }
 597 }
 598
 599 void set_const(struct regstat *cur,signed char reg,uint64_t value)
 600 {
 601   int hr;
 602   if(!reg) return;
 603   for (hr=0;hr<HOST_REGS;hr++) {
 604     if(cur->regmap[hr]==reg) {
 605       cur->isconst|=1<<hr;
 606       current_constmap[hr]=value;
 607     }
 608     else if((cur->regmap[hr]^64)==reg) {
 609       cur->isconst|=1<<hr;
 610       current_constmap[hr]=value>>32;
 611     }
 612   }
 613 }
 614
 615 void clear_const(struct regstat *cur,signed char reg)
 616 {
 617   int hr;
 618   if(!reg) return;
 619   for (hr=0;hr<HOST_REGS;hr++) {
 620     if((cur->regmap[hr]&63)==reg) {
 621       cur->isconst&=~(1<<hr);
 622     }
 623   }
 624 }
 625
 626 int is_const(struct regstat *cur,signed char reg)
 627 {
 628   int hr;
 629   if(reg<0) return 0;
 630   if(!reg) return 1;
 631   for (hr=0;hr<HOST_REGS;hr++) {
 632     if((cur->regmap[hr]&63)==reg) {
 633       return (cur->isconst>>hr)&1;
 634     }
 635   }
 636   return 0;
 637 }
 638 uint64_t get_const(struct regstat *cur,signed char reg)
 639 {
 640   int hr;
 641   if(!reg) return 0;
 642   for (hr=0;hr<HOST_REGS;hr++) {
 643     if(cur->regmap[hr]==reg) {
 644       return current_constmap[hr];
 645     }
 646   }
 647   printf("Unknown constant in r%d\n",reg);
 648   exit(1);
 649 }
 650
 651 // Least soon needed registers
 652 // Look at the next ten instructions and see which registers
 653 // will be used.  Try not to reallocate these.
 654 void lsn(u_char hsn[], int i, int *preferred_reg)
 655 {
 656   int j;
 657   int b=-1;
 658   for(j=0;j<9;j++)
 659   {
 660     if(i+j>=slen) {
 661       j=slen-i-1;
 662       break;
 663     }
 664     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
 665     {
 666       // Don't go past an unconditonal jump
 667       j++;
 668       break;
 669     }
 670   }
 671   for(;j>=0;j--)
 672   {
 673     if(rs1[i+j]) hsn[rs1[i+j]]=j;
 674     if(rs2[i+j]) hsn[rs2[i+j]]=j;
 675     if(rt1[i+j]) hsn[rt1[i+j]]=j;
 676     if(rt2[i+j]) hsn[rt2[i+j]]=j;
 677     if(itype[i+j]==STORE || itype[i+j]==STORELR) {
 678       // Stores can allocate zero
 679       hsn[rs1[i+j]]=j;
 680       hsn[rs2[i+j]]=j;
 681     }
 682     // On some architectures stores need invc_ptr
 683     #if defined(HOST_IMM8)
 684     if(itype[i+j]==STORE || itype[i+j]==STORELR || (opcode[i+j]&0x3b)==0x39 || (opcode[i+j]&0x3b)==0x3a) {
 685       hsn[INVCP]=j;
 686     }
 687     #endif
 688     if(i+j>=0&&(itype[i+j]==UJUMP||itype[i+j]==CJUMP||itype[i+j]==SJUMP||itype[i+j]==FJUMP))
 689     {
 690       hsn[CCREG]=j;
 691       b=j;
 692     }
 693   }
 694   if(b>=0)
 695   {
 696     if(ba[i+b]>=start && ba[i+b]<(start+slen*4))
 697     {
 698       // Follow first branch
 699       int t=(ba[i+b]-start)>>2;
 700       j=7-b;if(t+j>=slen) j=slen-t-1;
 701       for(;j>=0;j--)
 702       {
 703         if(rs1[t+j]) if(hsn[rs1[t+j]]>j+b+2) hsn[rs1[t+j]]=j+b+2;
 704         if(rs2[t+j]) if(hsn[rs2[t+j]]>j+b+2) hsn[rs2[t+j]]=j+b+2;
 705         //if(rt1[t+j]) if(hsn[rt1[t+j]]>j+b+2) hsn[rt1[t+j]]=j+b+2;
 706         //if(rt2[t+j]) if(hsn[rt2[t+j]]>j+b+2) hsn[rt2[t+j]]=j+b+2;
 707       }
 708     }
 709     // TODO: preferred register based on backward branch
 710   }
 711   // Delay slot should preferably not overwrite branch conditions or cycle count
 712   if(i>0&&(itype[i-1]==RJUMP||itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP)) {
 713     if(rs1[i-1]) if(hsn[rs1[i-1]]>1) hsn[rs1[i-1]]=1;
 714     if(rs2[i-1]) if(hsn[rs2[i-1]]>1) hsn[rs2[i-1]]=1;
 715     hsn[CCREG]=1;
 716     // ...or hash tables
 717     hsn[RHASH]=1;
 718     hsn[RHTBL]=1;
 719   }
 720   // Coprocessor load/store needs FTEMP, even if not declared
 721   if(itype[i]==C1LS||itype[i]==C2LS) {
 722     hsn[FTEMP]=0;
 723   }
 724   // Load L/R also uses FTEMP as a temporary register
 725   if(itype[i]==LOADLR) {
 726     hsn[FTEMP]=0;
 727   }
 728   // Also SWL/SWR/SDL/SDR
 729   if(opcode[i]==0x2a||opcode[i]==0x2e||opcode[i]==0x2c||opcode[i]==0x2d) {
 730     hsn[FTEMP]=0;
 731   }
 732   // Don't remove the TLB registers either
 733   if(itype[i]==LOAD || itype[i]==LOADLR || itype[i]==STORE || itype[i]==STORELR || itype[i]==C1LS || itype[i]==C2LS) {
 734     hsn[TLREG]=0;
 735   }
 736   // Don't remove the miniht registers
 737   if(itype[i]==UJUMP||itype[i]==RJUMP)
 738   {
 739     hsn[RHASH]=0;
 740     hsn[RHTBL]=0;
 741   }
 742 }
 743
 744 // We only want to allocate registers if we're going to use them again soon
 745 int needed_again(int r, int i)
 746 {
 747   int j;
 748   int b=-1;
 749   int rn=10;
 750
 751   if(i>0&&(itype[i-1]==UJUMP||itype[i-1]==RJUMP||(source[i-1]>>16)==0x1000))
 752   {
 753     if(ba[i-1]<start || ba[i-1]>start+slen*4-4)
 754       return 0; // Don't need any registers if exiting the block
 755   }
 756   for(j=0;j<9;j++)
 757   {
 758     if(i+j>=slen) {
 759       j=slen-i-1;
 760       break;
 761     }
 762     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
 763     {
 764       // Don't go past an unconditonal jump
 765       j++;
 766       break;
 767     }
 768     if(itype[i+j]==SYSCALL||itype[i+j]==HLECALL||itype[i+j]==INTCALL||((source[i+j]&0xfc00003f)==0x0d))
 769     {
 770       break;
 771     }
 772   }
 773   for(;j>=1;j--)
 774   {
 775     if(rs1[i+j]==r) rn=j;
 776     if(rs2[i+j]==r) rn=j;
 777     if((unneeded_reg[i+j]>>r)&1) rn=10;
 778     if(i+j>=0&&(itype[i+j]==UJUMP||itype[i+j]==CJUMP||itype[i+j]==SJUMP||itype[i+j]==FJUMP))
 779     {
 780       b=j;
 781     }
 782   }
 783   /*
 784   if(b>=0)
 785   {
 786     if(ba[i+b]>=start && ba[i+b]<(start+slen*4))
 787     {
 788       // Follow first branch
 789       int o=rn;
 790       int t=(ba[i+b]-start)>>2;
 791       j=7-b;if(t+j>=slen) j=slen-t-1;
 792       for(;j>=0;j--)
 793       {
 794         if(!((unneeded_reg[t+j]>>r)&1)) {
 795           if(rs1[t+j]==r) if(rn>j+b+2) rn=j+b+2;
 796           if(rs2[t+j]==r) if(rn>j+b+2) rn=j+b+2;
 797         }
 798         else rn=o;
 799       }
 800     }
 801   }*/
 802   if(rn<10) return 1;
 803   return 0;
 804 }
 805
 806 // Try to match register allocations at the end of a loop with those
 807 // at the beginning
 808 int loop_reg(int i, int r, int hr)
 809 {
 810   int j,k;
 811   for(j=0;j<9;j++)
 812   {
 813     if(i+j>=slen) {
 814       j=slen-i-1;
 815       break;
 816     }
 817     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
 818     {
 819       // Don't go past an unconditonal jump
 820       j++;
 821       break;
 822     }
 823   }
 824   k=0;
 825   if(i>0){
 826     if(itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP)
 827       k--;
 828   }
 829   for(;k<j;k++)
 830   {
 831     if(r<64&&((unneeded_reg[i+k]>>r)&1)) return hr;
 832     if(r>64&&((unneeded_reg_upper[i+k]>>r)&1)) return hr;
 833     if(i+k>=0&&(itype[i+k]==UJUMP||itype[i+k]==CJUMP||itype[i+k]==SJUMP||itype[i+k]==FJUMP))
 834     {
 835       if(ba[i+k]>=start && ba[i+k]<(start+i*4))
 836       {
 837         int t=(ba[i+k]-start)>>2;
 838         int reg=get_reg(regs[t].regmap_entry,r);
 839         if(reg>=0) return reg;
 840         //reg=get_reg(regs[t+1].regmap_entry,r);
 841         //if(reg>=0) return reg;
 842       }
 843     }
 844   }
 845   return hr;
 846 }
 847
 848
 849 // Allocate every register, preserving source/target regs
 850 void alloc_all(struct regstat *cur,int i)
 851 {
 852   int hr;
 853
 854   for(hr=0;hr<HOST_REGS;hr++) {
 855     if(hr!=EXCLUDE_REG) {
 856       if(((cur->regmap[hr]&63)!=rs1[i])&&((cur->regmap[hr]&63)!=rs2[i])&&
 857          ((cur->regmap[hr]&63)!=rt1[i])&&((cur->regmap[hr]&63)!=rt2[i]))
 858       {
 859         cur->regmap[hr]=-1;
 860         cur->dirty&=~(1<<hr);
 861       }
 862       // Don't need zeros
 863       if((cur->regmap[hr]&63)==0)
 864       {
 865         cur->regmap[hr]=-1;
 866         cur->dirty&=~(1<<hr);
 867       }
 868     }
 869   }
 870 }
 871
 872 #ifndef FORCE32
 873 void div64(int64_t dividend,int64_t divisor)
 874 {
 875   lo=dividend/divisor;
 876   hi=dividend%divisor;
 877   //printf("TRACE: ddiv %8x%8x %8x%8x\n" ,(int)reg[HIREG],(int)(reg[HIREG]>>32)
 878   //                                     ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
 879 }
 880 void divu64(uint64_t dividend,uint64_t divisor)
 881 {
 882   lo=dividend/divisor;
 883   hi=dividend%divisor;
 884   //printf("TRACE: ddivu %8x%8x %8x%8x\n",(int)reg[HIREG],(int)(reg[HIREG]>>32)
 885   //                                     ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
 886 }
 887
 888 void mult64(uint64_t m1,uint64_t m2)
 889 {
 890    unsigned long long int op1, op2, op3, op4;
 891    unsigned long long int result1, result2, result3, result4;
 892    unsigned long long int temp1, temp2, temp3, temp4;
 893    int sign = 0;
 894
 895    if (m1 < 0)
 896      {
 897     op2 = -m1;
 898     sign = 1 - sign;
 899      }
 900    else op2 = m1;
 901    if (m2 < 0)
 902      {
 903     op4 = -m2;
 904     sign = 1 - sign;
 905      }
 906    else op4 = m2;
 907
 908    op1 = op2 & 0xFFFFFFFF;
 909    op2 = (op2 >> 32) & 0xFFFFFFFF;
 910    op3 = op4 & 0xFFFFFFFF;
 911    op4 = (op4 >> 32) & 0xFFFFFFFF;
 912
 913    temp1 = op1 * op3;
 914    temp2 = (temp1 >> 32) + op1 * op4;
 915    temp3 = op2 * op3;
 916    temp4 = (temp3 >> 32) + op2 * op4;
 917
 918    result1 = temp1 & 0xFFFFFFFF;
 919    result2 = temp2 + (temp3 & 0xFFFFFFFF);
 920    result3 = (result2 >> 32) + temp4;
 921    result4 = (result3 >> 32);
 922
 923    lo = result1 | (result2 << 32);
 924    hi = (result3 & 0xFFFFFFFF) | (result4 << 32);
 925    if (sign)
 926      {
 927     hi = ~hi;
 928     if (!lo) hi++;
 929     else lo = ~lo + 1;
 930      }
 931 }
 932
 933 void multu64(uint64_t m1,uint64_t m2)
 934 {
 935    unsigned long long int op1, op2, op3, op4;
 936    unsigned long long int result1, result2, result3, result4;
 937    unsigned long long int temp1, temp2, temp3, temp4;
 938
 939    op1 = m1 & 0xFFFFFFFF;
 940    op2 = (m1 >> 32) & 0xFFFFFFFF;
 941    op3 = m2 & 0xFFFFFFFF;
 942    op4 = (m2 >> 32) & 0xFFFFFFFF;
 943
 944    temp1 = op1 * op3;
 945    temp2 = (temp1 >> 32) + op1 * op4;
 946    temp3 = op2 * op3;
 947    temp4 = (temp3 >> 32) + op2 * op4;
 948
 949    result1 = temp1 & 0xFFFFFFFF;
 950    result2 = temp2 + (temp3 & 0xFFFFFFFF);
 951    result3 = (result2 >> 32) + temp4;
 952    result4 = (result3 >> 32);
 953
 954    lo = result1 | (result2 << 32);
 955    hi = (result3 & 0xFFFFFFFF) | (result4 << 32);
 956
 957   //printf("TRACE: dmultu %8x%8x %8x%8x\n",(int)reg[HIREG],(int)(reg[HIREG]>>32)
 958   //                                      ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
 959 }
 960
 961 uint64_t ldl_merge(uint64_t original,uint64_t loaded,u_int bits)
 962 {
 963   if(bits) {
 964     original<<=64-bits;
 965     original>>=64-bits;
 966     loaded<<=bits;
 967     original|=loaded;
 968   }
 969   else original=loaded;
 970   return original;
 971 }
 972 uint64_t ldr_merge(uint64_t original,uint64_t loaded,u_int bits)
 973 {
 974   if(bits^56) {
 975     original>>=64-(bits^56);
 976     original<<=64-(bits^56);
 977     loaded>>=bits^56;
 978     original|=loaded;
 979   }
 980   else original=loaded;
 981   return original;
 982 }
 983 #endif
 984
 985 #ifdef __i386__
 986 #include "assem_x86.c"
 987 #endif
 988 #ifdef __x86_64__
 989 #include "assem_x64.c"
 990 #endif
 991 #ifdef __arm__
 992 #include "assem_arm.c"
 993 #endif
 994
 995 // Add virtual address mapping to linked list
 996 void ll_add(struct ll_entry **head,int vaddr,void *addr)
 997 {
 998   struct ll_entry *new_entry;
 999   new_entry=malloc(sizeof(struct ll_entry));
1000   assert(new_entry!=NULL);
1001   new_entry->vaddr=vaddr;
1002   new_entry->reg32=0;
1003   new_entry->addr=addr;
1004   new_entry->next=*head;
1005   *head=new_entry;
1006 }
1007
1008 // Add virtual address mapping for 32-bit compiled block
1009 void ll_add_32(struct ll_entry **head,int vaddr,u_int reg32,void *addr)
1010 {
1011   ll_add(head,vaddr,addr);
1012 #ifndef FORCE32
1013   (*head)->reg32=reg32;
1014 #endif
1015 }
1016
1017 // Check if an address is already compiled
1018 // but don't return addresses which are about to expire from the cache
1019 void *check_addr(u_int vaddr)
1020 {
1021   u_int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
1022   if(ht_bin[0]==vaddr) {
1023     if(((ht_bin[1]-MAX_OUTPUT_BLOCK_SIZE-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
1024       if(isclean(ht_bin[1])) return (void *)ht_bin[1];
1025   }
1026   if(ht_bin[2]==vaddr) {
1027     if(((ht_bin[3]-MAX_OUTPUT_BLOCK_SIZE-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
1028       if(isclean(ht_bin[3])) return (void *)ht_bin[3];
1029   }
1030   u_int page=get_page(vaddr);
1031   struct ll_entry *head;
1032   head=jump_in[page];
1033   while(head!=NULL) {
1034     if(head->vaddr==vaddr&&head->reg32==0) {
1035       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1036         // Update existing entry with current address
1037         if(ht_bin[0]==vaddr) {
1038           ht_bin[1]=(int)head->addr;
1039           return head->addr;
1040         }
1041         if(ht_bin[2]==vaddr) {
1042           ht_bin[3]=(int)head->addr;
1043           return head->addr;
1044         }
1045         // Insert into hash table with low priority.
1046         // Don't evict existing entries, as they are probably
1047         // addresses that are being accessed frequently.
1048         if(ht_bin[0]==-1) {
1049           ht_bin[1]=(int)head->addr;
1050           ht_bin[0]=vaddr;
1051         }else if(ht_bin[2]==-1) {
1052           ht_bin[3]=(int)head->addr;
1053           ht_bin[2]=vaddr;
1054         }
1055         return head->addr;
1056       }
1057     }
1058     head=head->next;
1059   }
1060   return 0;
1061 }
1062
1063 void remove_hash(int vaddr)
1064 {
1065   //printf("remove hash: %x\n",vaddr);
1066   int *ht_bin=hash_table[(((vaddr)>>16)^vaddr)&0xFFFF];
1067   if(ht_bin[2]==vaddr) {
1068     ht_bin[2]=ht_bin[3]=-1;
1069   }
1070   if(ht_bin[0]==vaddr) {
1071     ht_bin[0]=ht_bin[2];
1072     ht_bin[1]=ht_bin[3];
1073     ht_bin[2]=ht_bin[3]=-1;
1074   }
1075 }
1076
1077 void ll_remove_matching_addrs(struct ll_entry **head,int addr,int shift)
1078 {
1079   struct ll_entry *next;
1080   while(*head) {
1081     if(((u_int)((*head)->addr)>>shift)==(addr>>shift) ||
1082        ((u_int)((*head)->addr-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(addr>>shift))
1083     {
1084       inv_debug("EXP: Remove pointer to %x (%x)\n",(int)(*head)->addr,(*head)->vaddr);
1085       remove_hash((*head)->vaddr);
1086       next=(*head)->next;
1087       free(*head);
1088       *head=next;
1089     }
1090     else
1091     {
1092       head=&((*head)->next);
1093     }
1094   }
1095 }
1096
1097 // Remove all entries from linked list
1098 void ll_clear(struct ll_entry **head)
1099 {
1100   struct ll_entry *cur;
1101   struct ll_entry *next;
1102   if(cur=*head) {
1103     *head=0;
1104     while(cur) {
1105       next=cur->next;
1106       free(cur);
1107       cur=next;
1108     }
1109   }
1110 }
1111
1112 // Dereference the pointers and remove if it matches
1113 void ll_kill_pointers(struct ll_entry *head,int addr,int shift)
1114 {
1115   while(head) {
1116     int ptr=get_pointer(head->addr);
1117     inv_debug("EXP: Lookup pointer to %x at %x (%x)\n",(int)ptr,(int)head->addr,head->vaddr);
1118     if(((ptr>>shift)==(addr>>shift)) ||
1119        (((ptr-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(addr>>shift)))
1120     {
1121       inv_debug("EXP: Kill pointer at %x (%x)\n",(int)head->addr,head->vaddr);
1122       u_int host_addr=(u_int)kill_pointer(head->addr);
1123       #ifdef __arm__
1124         needs_clear_cache[(host_addr-(u_int)BASE_ADDR)>>17]|=1<<(((host_addr-(u_int)BASE_ADDR)>>12)&31);
1125       #endif
1126     }
1127     head=head->next;
1128   }
1129 }
1130
1131 // This is called when we write to a compiled block (see do_invstub)
1132 void invalidate_page(u_int page)
1133 {
1134   struct ll_entry *head;
1135   struct ll_entry *next;
1136   head=jump_in[page];
1137   jump_in[page]=0;
1138   while(head!=NULL) {
1139     inv_debug("INVALIDATE: %x\n",head->vaddr);
1140     remove_hash(head->vaddr);
1141     next=head->next;
1142     free(head);
1143     head=next;
1144   }
1145   head=jump_out[page];
1146   jump_out[page]=0;
1147   while(head!=NULL) {
1148     inv_debug("INVALIDATE: kill pointer to %x (%x)\n",head->vaddr,(int)head->addr);
1149     u_int host_addr=(u_int)kill_pointer(head->addr);
1150     #ifdef __arm__
1151       needs_clear_cache[(host_addr-(u_int)BASE_ADDR)>>17]|=1<<(((host_addr-(u_int)BASE_ADDR)>>12)&31);
1152     #endif
1153     next=head->next;
1154     free(head);
1155     head=next;
1156   }
1157 }
1158
1159 static void invalidate_block_range(u_int block, u_int first, u_int last)
1160 {
1161   u_int page=get_page(block<<12);
1162   //printf("first=%d last=%d\n",first,last);
1163   invalidate_page(page);
1164   assert(first+5>page); // NB: this assumes MAXBLOCK<=4096 (4 pages)
1165   assert(last<page+5);
1166   // Invalidate the adjacent pages if a block crosses a 4K boundary
1167   while(first<page) {
1168     invalidate_page(first);
1169     first++;
1170   }
1171   for(first=page+1;first<last;first++) {
1172     invalidate_page(first);
1173   }
1174   #ifdef __arm__
1175     do_clear_cache();
1176   #endif
1177
1178   // Don't trap writes
1179   invalid_code[block]=1;
1180 #ifndef DISABLE_TLB
1181   // If there is a valid TLB entry for this page, remove write protect
1182   if(tlb_LUT_w[block]) {
1183     assert(tlb_LUT_r[block]==tlb_LUT_w[block]);
1184     // CHECK: Is this right?
1185     memory_map[block]=((tlb_LUT_w[block]&0xFFFFF000)-(block<<12)+(unsigned int)rdram-0x80000000)>>2;
1186     u_int real_block=tlb_LUT_w[block]>>12;
1187     invalid_code[real_block]=1;
1188     if(real_block>=0x80000&&real_block<0x80800) memory_map[real_block]=((u_int)rdram-0x80000000)>>2;
1189   }
1190   else if(block>=0x80000&&block<0x80800) memory_map[block]=((u_int)rdram-0x80000000)>>2;
1191 #endif
1192
1193   #ifdef USE_MINI_HT
1194   memset(mini_ht,-1,sizeof(mini_ht));
1195   #endif
1196 }
1197
1198 void invalidate_block(u_int block)
1199 {
1200   u_int page=get_page(block<<12);
1201   u_int vpage=get_vpage(block<<12);
1202   inv_debug("INVALIDATE: %x (%d)\n",block<<12,page);
1203   //inv_debug("invalid_code[block]=%d\n",invalid_code[block]);
1204   u_int first,last;
1205   first=last=page;
1206   struct ll_entry *head;
1207   head=jump_dirty[vpage];
1208   //printf("page=%d vpage=%d\n",page,vpage);
1209   while(head!=NULL) {
1210     u_int start,end;
1211     if(vpage>2047||(head->vaddr>>12)==block) { // Ignore vaddr hash collision
1212       get_bounds((int)head->addr,&start,&end);
1213       //printf("start: %x end: %x\n",start,end);
1214       if(page<2048&&start>=0x80000000&&end<0x80000000+RAM_SIZE) {
1215         if(((start-(u_int)rdram)>>12)<=page&&((end-1-(u_int)rdram)>>12)>=page) {
1216           if((((start-(u_int)rdram)>>12)&2047)<first) first=((start-(u_int)rdram)>>12)&2047;
1217           if((((end-1-(u_int)rdram)>>12)&2047)>last) last=((end-1-(u_int)rdram)>>12)&2047;
1218         }
1219       }
1220 #ifndef DISABLE_TLB
1221       if(page<2048&&(signed int)start>=(signed int)0xC0000000&&(signed int)end>=(signed int)0xC0000000) {
1222         if(((start+memory_map[start>>12]-(u_int)rdram)>>12)<=page&&((end-1+memory_map[(end-1)>>12]-(u_int)rdram)>>12)>=page) {
1223           if((((start+memory_map[start>>12]-(u_int)rdram)>>12)&2047)<first) first=((start+memory_map[start>>12]-(u_int)rdram)>>12)&2047;
1224           if((((end-1+memory_map[(end-1)>>12]-(u_int)rdram)>>12)&2047)>last) last=((end-1+memory_map[(end-1)>>12]-(u_int)rdram)>>12)&2047;
1225         }
1226       }
1227 #endif
1228     }
1229     head=head->next;
1230   }
1231   invalidate_block_range(block,first,last);
1232 }
1233
1234 void invalidate_addr(u_int addr)
1235 {
1236 #ifdef PCSX
1237   //static int rhits;
1238   // this check is done by the caller
1239   //if (inv_code_start<=addr&&addr<=inv_code_end) { rhits++; return; }
1240   u_int page=get_vpage(addr);
1241   if(page<2048) { // RAM
1242     struct ll_entry *head;
1243     u_int addr_min=~0, addr_max=0;
1244     int mask=RAM_SIZE-1;
1245     int pg1;
1246     inv_code_start=addr&~0xfff;
1247     inv_code_end=addr|0xfff;
1248     pg1=page;
1249     if (pg1>0) {
1250       // must check previous page too because of spans..
1251       pg1--;
1252       inv_code_start-=0x1000;
1253     }
1254     for(;pg1<=page;pg1++) {
1255       for(head=jump_dirty[pg1];head!=NULL;head=head->next) {
1256         u_int start,end;
1257         get_bounds((int)head->addr,&start,&end);
1258         if((start&mask)<=(addr&mask)&&(addr&mask)<(end&mask)) {
1259           if(start<addr_min) addr_min=start;
1260           if(end>addr_max) addr_max=end;
1261         }
1262         else if(addr<start) {
1263           if(start<inv_code_end)
1264             inv_code_end=start-1;
1265         }
1266         else {
1267           if(end>inv_code_start)
1268             inv_code_start=end;
1269         }
1270       }
1271     }
1272     if (addr_min!=~0) {
1273       inv_debug("INV ADDR: %08x hit %08x-%08x\n", addr, addr_min, addr_max);
1274       inv_code_start=inv_code_end=~0;
1275       invalidate_block_range(addr>>12,(addr_min&mask)>>12,(addr_max&mask)>>12);
1276       return;
1277     }
1278     else {
1279       inv_debug("INV ADDR: %08x miss, inv %08x-%08x, sk %d\n", addr, inv_code_start, inv_code_end, 0);
1280       return;
1281     }
1282   }
1283 #endif
1284   invalidate_block(addr>>12);
1285 }
1286
1287 // This is called when loading a save state.
1288 // Anything could have changed, so invalidate everything.
1289 void invalidate_all_pages()
1290 {
1291   u_int page,n;
1292   for(page=0;page<4096;page++)
1293     invalidate_page(page);
1294   for(page=0;page<1048576;page++)
1295     if(!invalid_code[page]) {
1296       restore_candidate[(page&2047)>>3]|=1<<(page&7);
1297       restore_candidate[((page&2047)>>3)+256]|=1<<(page&7);
1298     }
1299   #ifdef __arm__
1300   __clear_cache((void *)BASE_ADDR,(void *)BASE_ADDR+(1<<TARGET_SIZE_2));
1301   #endif
1302   #ifdef USE_MINI_HT
1303   memset(mini_ht,-1,sizeof(mini_ht));
1304   #endif
1305   #ifndef DISABLE_TLB
1306   // TLB
1307   for(page=0;page<0x100000;page++) {
1308     if(tlb_LUT_r[page]) {
1309       memory_map[page]=((tlb_LUT_r[page]&0xFFFFF000)-(page<<12)+(unsigned int)rdram-0x80000000)>>2;
1310       if(!tlb_LUT_w[page]||!invalid_code[page])
1311         memory_map[page]|=0x40000000; // Write protect
1312     }
1313     else memory_map[page]=-1;
1314     if(page==0x80000) page=0xC0000;
1315   }
1316   tlb_hacks();
1317   #endif
1318 }
1319
1320 // Add an entry to jump_out after making a link
1321 void add_link(u_int vaddr,void *src)
1322 {
1323   u_int page=get_page(vaddr);
1324   inv_debug("add_link: %x -> %x (%d)\n",(int)src,vaddr,page);
1325   int *ptr=(int *)(src+4);
1326   assert((*ptr&0x0fff0000)==0x059f0000);
1327   ll_add(jump_out+page,vaddr,src);
1328   //int ptr=get_pointer(src);
1329   //inv_debug("add_link: Pointer is to %x\n",(int)ptr);
1330 }
1331
1332 // If a code block was found to be unmodified (bit was set in
1333 // restore_candidate) and it remains unmodified (bit is clear
1334 // in invalid_code) then move the entries for that 4K page from
1335 // the dirty list to the clean list.
1336 void clean_blocks(u_int page)
1337 {
1338   struct ll_entry *head;
1339   inv_debug("INV: clean_blocks page=%d\n",page);
1340   head=jump_dirty[page];
1341   while(head!=NULL) {
1342     if(!invalid_code[head->vaddr>>12]) {
1343       // Don't restore blocks which are about to expire from the cache
1344       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1345         u_int start,end;
1346         if(verify_dirty((int)head->addr)) {
1347           //printf("Possibly Restore %x (%x)\n",head->vaddr, (int)head->addr);
1348           u_int i;
1349           u_int inv=0;
1350           get_bounds((int)head->addr,&start,&end);
1351           if(start-(u_int)rdram<RAM_SIZE) {
1352             for(i=(start-(u_int)rdram+0x80000000)>>12;i<=(end-1-(u_int)rdram+0x80000000)>>12;i++) {
1353               inv|=invalid_code[i];
1354             }
1355           }
1356 #ifndef DISABLE_TLB
1357           if((signed int)head->vaddr>=(signed int)0xC0000000) {
1358             u_int addr = (head->vaddr+(memory_map[head->vaddr>>12]<<2));
1359             //printf("addr=%x start=%x end=%x\n",addr,start,end);
1360             if(addr<start||addr>=end) inv=1;
1361           }
1362 #endif
1363           else if((signed int)head->vaddr>=(signed int)0x80000000+RAM_SIZE) {
1364             inv=1;
1365           }
1366           if(!inv) {
1367             void * clean_addr=(void *)get_clean_addr((int)head->addr);
1368             if((((u_int)clean_addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1369               u_int ppage=page;
1370 #ifndef DISABLE_TLB
1371               if(page<2048&&tlb_LUT_r[head->vaddr>>12]) ppage=(tlb_LUT_r[head->vaddr>>12]^0x80000000)>>12;
1372 #endif
1373               inv_debug("INV: Restored %x (%x/%x)\n",head->vaddr, (int)head->addr, (int)clean_addr);
1374               //printf("page=%x, addr=%x\n",page,head->vaddr);
1375               //assert(head->vaddr>>12==(page|0x80000));
1376               ll_add_32(jump_in+ppage,head->vaddr,head->reg32,clean_addr);
1377               int *ht_bin=hash_table[((head->vaddr>>16)^head->vaddr)&0xFFFF];
1378               if(!head->reg32) {
1379                 if(ht_bin[0]==head->vaddr) {
1380                   ht_bin[1]=(int)clean_addr; // Replace existing entry
1381                 }
1382                 if(ht_bin[2]==head->vaddr) {
1383                   ht_bin[3]=(int)clean_addr; // Replace existing entry
1384                 }
1385               }
1386             }
1387           }
1388         }
1389       }
1390     }
1391     head=head->next;
1392   }
1393 }
1394
1395
1396 void mov_alloc(struct regstat *current,int i)
1397 {
1398   // Note: Don't need to actually alloc the source registers
1399   if((~current->is32>>rs1[i])&1) {
1400     //alloc_reg64(current,i,rs1[i]);
1401     alloc_reg64(current,i,rt1[i]);
1402     current->is32&=~(1LL<<rt1[i]);
1403   } else {
1404     //alloc_reg(current,i,rs1[i]);
1405     alloc_reg(current,i,rt1[i]);
1406     current->is32|=(1LL<<rt1[i]);
1407   }
1408   clear_const(current,rs1[i]);
1409   clear_const(current,rt1[i]);
1410   dirty_reg(current,rt1[i]);
1411 }
1412
1413 void shiftimm_alloc(struct regstat *current,int i)
1414 {
1415   if(opcode2[i]<=0x3) // SLL/SRL/SRA
1416   {
1417     if(rt1[i]) {
1418       if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1419       else lt1[i]=rs1[i];
1420       alloc_reg(current,i,rt1[i]);
1421       current->is32|=1LL<<rt1[i];
1422       dirty_reg(current,rt1[i]);
1423       if(is_const(current,rs1[i])) {
1424         int v=get_const(current,rs1[i]);
1425         if(opcode2[i]==0x00) set_const(current,rt1[i],v<<imm[i]);
1426         if(opcode2[i]==0x02) set_const(current,rt1[i],(u_int)v>>imm[i]);
1427         if(opcode2[i]==0x03) set_const(current,rt1[i],v>>imm[i]);
1428       }
1429       else clear_const(current,rt1[i]);
1430     }
1431   }
1432   else
1433   {
1434     clear_const(current,rs1[i]);
1435     clear_const(current,rt1[i]);
1436   }
1437
1438   if(opcode2[i]>=0x38&&opcode2[i]<=0x3b) // DSLL/DSRL/DSRA
1439   {
1440     if(rt1[i]) {
1441       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1442       alloc_reg64(current,i,rt1[i]);
1443       current->is32&=~(1LL<<rt1[i]);
1444       dirty_reg(current,rt1[i]);
1445     }
1446   }
1447   if(opcode2[i]==0x3c) // DSLL32
1448   {
1449     if(rt1[i]) {
1450       if(rs1[i]) alloc_reg(current,i,rs1[i]);
1451       alloc_reg64(current,i,rt1[i]);
1452       current->is32&=~(1LL<<rt1[i]);
1453       dirty_reg(current,rt1[i]);
1454     }
1455   }
1456   if(opcode2[i]==0x3e) // DSRL32
1457   {
1458     if(rt1[i]) {
1459       alloc_reg64(current,i,rs1[i]);
1460       if(imm[i]==32) {
1461         alloc_reg64(current,i,rt1[i]);
1462         current->is32&=~(1LL<<rt1[i]);
1463       } else {
1464         alloc_reg(current,i,rt1[i]);
1465         current->is32|=1LL<<rt1[i];
1466       }
1467       dirty_reg(current,rt1[i]);
1468     }
1469   }
1470   if(opcode2[i]==0x3f) // DSRA32
1471   {
1472     if(rt1[i]) {
1473       alloc_reg64(current,i,rs1[i]);
1474       alloc_reg(current,i,rt1[i]);
1475       current->is32|=1LL<<rt1[i];
1476       dirty_reg(current,rt1[i]);
1477     }
1478   }
1479 }
1480
1481 void shift_alloc(struct regstat *current,int i)
1482 {
1483   if(rt1[i]) {
1484     if(opcode2[i]<=0x07) // SLLV/SRLV/SRAV
1485     {
1486       if(rs1[i]) alloc_reg(current,i,rs1[i]);
1487       if(rs2[i]) alloc_reg(current,i,rs2[i]);
1488       alloc_reg(current,i,rt1[i]);
1489       if(rt1[i]==rs2[i]) {
1490         alloc_reg_temp(current,i,-1);
1491         minimum_free_regs[i]=1;
1492       }
1493       current->is32|=1LL<<rt1[i];
1494     } else { // DSLLV/DSRLV/DSRAV
1495       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1496       if(rs2[i]) alloc_reg(current,i,rs2[i]);
1497       alloc_reg64(current,i,rt1[i]);
1498       current->is32&=~(1LL<<rt1[i]);
1499       if(opcode2[i]==0x16||opcode2[i]==0x17) // DSRLV and DSRAV need a temporary register
1500       {
1501         alloc_reg_temp(current,i,-1);
1502         minimum_free_regs[i]=1;
1503       }
1504     }
1505     clear_const(current,rs1[i]);
1506     clear_const(current,rs2[i]);
1507     clear_const(current,rt1[i]);
1508     dirty_reg(current,rt1[i]);
1509   }
1510 }
1511
1512 void alu_alloc(struct regstat *current,int i)
1513 {
1514   if(opcode2[i]>=0x20&&opcode2[i]<=0x23) { // ADD/ADDU/SUB/SUBU
1515     if(rt1[i]) {
1516       if(rs1[i]&&rs2[i]) {
1517         alloc_reg(current,i,rs1[i]);
1518         alloc_reg(current,i,rs2[i]);
1519       }
1520       else {
1521         if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1522         if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg(current,i,rs2[i]);
1523       }
1524       alloc_reg(current,i,rt1[i]);
1525     }
1526     current->is32|=1LL<<rt1[i];
1527   }
1528   if(opcode2[i]==0x2a||opcode2[i]==0x2b) { // SLT/SLTU
1529     if(rt1[i]) {
1530       if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
1531       {
1532         alloc_reg64(current,i,rs1[i]);
1533         alloc_reg64(current,i,rs2[i]);
1534         alloc_reg(current,i,rt1[i]);
1535       } else {
1536         alloc_reg(current,i,rs1[i]);
1537         alloc_reg(current,i,rs2[i]);
1538         alloc_reg(current,i,rt1[i]);
1539       }
1540     }
1541     current->is32|=1LL<<rt1[i];
1542   }
1543   if(opcode2[i]>=0x24&&opcode2[i]<=0x27) { // AND/OR/XOR/NOR
1544     if(rt1[i]) {
1545       if(rs1[i]&&rs2[i]) {
1546         alloc_reg(current,i,rs1[i]);
1547         alloc_reg(current,i,rs2[i]);
1548       }
1549       else
1550       {
1551         if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1552         if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg(current,i,rs2[i]);
1553       }
1554       alloc_reg(current,i,rt1[i]);
1555       if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
1556       {
1557         if(!((current->uu>>rt1[i])&1)) {
1558           alloc_reg64(current,i,rt1[i]);
1559         }
1560         if(get_reg(current->regmap,rt1[i]|64)>=0) {
1561           if(rs1[i]&&rs2[i]) {
1562             alloc_reg64(current,i,rs1[i]);
1563             alloc_reg64(current,i,rs2[i]);
1564           }
1565           else
1566           {
1567             // Is is really worth it to keep 64-bit values in registers?
1568             #ifdef NATIVE_64BIT
1569             if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg64(current,i,rs1[i]);
1570             if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg64(current,i,rs2[i]);
1571             #endif
1572           }
1573         }
1574         current->is32&=~(1LL<<rt1[i]);
1575       } else {
1576         current->is32|=1LL<<rt1[i];
1577       }
1578     }
1579   }
1580   if(opcode2[i]>=0x2c&&opcode2[i]<=0x2f) { // DADD/DADDU/DSUB/DSUBU
1581     if(rt1[i]) {
1582       if(rs1[i]&&rs2[i]) {
1583         if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1584           alloc_reg64(current,i,rs1[i]);
1585           alloc_reg64(current,i,rs2[i]);
1586           alloc_reg64(current,i,rt1[i]);
1587         } else {
1588           alloc_reg(current,i,rs1[i]);
1589           alloc_reg(current,i,rs2[i]);
1590           alloc_reg(current,i,rt1[i]);
1591         }
1592       }
1593       else {
1594         alloc_reg(current,i,rt1[i]);
1595         if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1596           // DADD used as move, or zeroing
1597           // If we have a 64-bit source, then make the target 64 bits too
1598           if(rs1[i]&&!((current->is32>>rs1[i])&1)) {
1599             if(get_reg(current->regmap,rs1[i])>=0) alloc_reg64(current,i,rs1[i]);
1600             alloc_reg64(current,i,rt1[i]);
1601           } else if(rs2[i]&&!((current->is32>>rs2[i])&1)) {
1602             if(get_reg(current->regmap,rs2[i])>=0) alloc_reg64(current,i,rs2[i]);
1603             alloc_reg64(current,i,rt1[i]);
1604           }
1605           if(opcode2[i]>=0x2e&&rs2[i]) {
1606             // DSUB used as negation - 64-bit result
1607             // If we have a 32-bit register, extend it to 64 bits
1608             if(get_reg(current->regmap,rs2[i])>=0) alloc_reg64(current,i,rs2[i]);
1609             alloc_reg64(current,i,rt1[i]);
1610           }
1611         }
1612       }
1613       if(rs1[i]&&rs2[i]) {
1614         current->is32&=~(1LL<<rt1[i]);
1615       } else if(rs1[i]) {
1616         current->is32&=~(1LL<<rt1[i]);
1617         if((current->is32>>rs1[i])&1)
1618           current->is32|=1LL<<rt1[i];
1619       } else if(rs2[i]) {
1620         current->is32&=~(1LL<<rt1[i]);
1621         if((current->is32>>rs2[i])&1)
1622           current->is32|=1LL<<rt1[i];
1623       } else {
1624         current->is32|=1LL<<rt1[i];
1625       }
1626     }
1627   }
1628   clear_const(current,rs1[i]);
1629   clear_const(current,rs2[i]);
1630   clear_const(current,rt1[i]);
1631   dirty_reg(current,rt1[i]);
1632 }
1633
1634 void imm16_alloc(struct regstat *current,int i)
1635 {
1636   if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1637   else lt1[i]=rs1[i];
1638   if(rt1[i]) alloc_reg(current,i,rt1[i]);
1639   if(opcode[i]==0x18||opcode[i]==0x19) { // DADDI/DADDIU
1640     current->is32&=~(1LL<<rt1[i]);
1641     if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1642       // TODO: Could preserve the 32-bit flag if the immediate is zero
1643       alloc_reg64(current,i,rt1[i]);
1644       alloc_reg64(current,i,rs1[i]);
1645     }
1646     clear_const(current,rs1[i]);
1647     clear_const(current,rt1[i]);
1648   }
1649   else if(opcode[i]==0x0a||opcode[i]==0x0b) { // SLTI/SLTIU
1650     if((~current->is32>>rs1[i])&1) alloc_reg64(current,i,rs1[i]);
1651     current->is32|=1LL<<rt1[i];
1652     clear_const(current,rs1[i]);
1653     clear_const(current,rt1[i]);
1654   }
1655   else if(opcode[i]>=0x0c&&opcode[i]<=0x0e) { // ANDI/ORI/XORI
1656     if(((~current->is32>>rs1[i])&1)&&opcode[i]>0x0c) {
1657       if(rs1[i]!=rt1[i]) {
1658         if(needed_again(rs1[i],i)) alloc_reg64(current,i,rs1[i]);
1659         alloc_reg64(current,i,rt1[i]);
1660         current->is32&=~(1LL<<rt1[i]);
1661       }
1662     }
1663     else current->is32|=1LL<<rt1[i]; // ANDI clears upper bits
1664     if(is_const(current,rs1[i])) {
1665       int v=get_const(current,rs1[i]);
1666       if(opcode[i]==0x0c) set_const(current,rt1[i],v&imm[i]);
1667       if(opcode[i]==0x0d) set_const(current,rt1[i],v|imm[i]);
1668       if(opcode[i]==0x0e) set_const(current,rt1[i],v^imm[i]);
1669     }
1670     else clear_const(current,rt1[i]);
1671   }
1672   else if(opcode[i]==0x08||opcode[i]==0x09) { // ADDI/ADDIU
1673     if(is_const(current,rs1[i])) {
1674       int v=get_const(current,rs1[i]);
1675       set_const(current,rt1[i],v+imm[i]);
1676     }
1677     else clear_const(current,rt1[i]);
1678     current->is32|=1LL<<rt1[i];
1679   }
1680   else {
1681     set_const(current,rt1[i],((long long)((short)imm[i]))<<16); // LUI
1682     current->is32|=1LL<<rt1[i];
1683   }
1684   dirty_reg(current,rt1[i]);
1685 }
1686
1687 void load_alloc(struct regstat *current,int i)
1688 {
1689   clear_const(current,rt1[i]);
1690   //if(rs1[i]!=rt1[i]&&needed_again(rs1[i],i)) clear_const(current,rs1[i]); // Does this help or hurt?
1691   if(!rs1[i]) current->u&=~1LL; // Allow allocating r0 if it's the source register
1692   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1693   if(rt1[i]&&!((current->u>>rt1[i])&1)) {
1694     alloc_reg(current,i,rt1[i]);
1695     assert(get_reg(current->regmap,rt1[i])>=0);
1696     if(opcode[i]==0x27||opcode[i]==0x37) // LWU/LD
1697     {
1698       current->is32&=~(1LL<<rt1[i]);
1699       alloc_reg64(current,i,rt1[i]);
1700     }
1701     else if(opcode[i]==0x1A||opcode[i]==0x1B) // LDL/LDR
1702     {
1703       current->is32&=~(1LL<<rt1[i]);
1704       alloc_reg64(current,i,rt1[i]);
1705       alloc_all(current,i);
1706       alloc_reg64(current,i,FTEMP);
1707       minimum_free_regs[i]=HOST_REGS;
1708     }
1709     else current->is32|=1LL<<rt1[i];
1710     dirty_reg(current,rt1[i]);
1711     // If using TLB, need a register for pointer to the mapping table
1712     if(using_tlb) alloc_reg(current,i,TLREG);
1713     // LWL/LWR need a temporary register for the old value
1714     if(opcode[i]==0x22||opcode[i]==0x26)
1715     {
1716       alloc_reg(current,i,FTEMP);
1717       alloc_reg_temp(current,i,-1);
1718       minimum_free_regs[i]=1;
1719     }
1720   }
1721   else
1722   {
1723     // Load to r0 or unneeded register (dummy load)
1724     // but we still need a register to calculate the address
1725     if(opcode[i]==0x22||opcode[i]==0x26)
1726     {
1727       alloc_reg(current,i,FTEMP); // LWL/LWR need another temporary
1728     }
1729     // If using TLB, need a register for pointer to the mapping table
1730     if(using_tlb) alloc_reg(current,i,TLREG);
1731     alloc_reg_temp(current,i,-1);
1732     minimum_free_regs[i]=1;
1733     if(opcode[i]==0x1A||opcode[i]==0x1B) // LDL/LDR
1734     {
1735       alloc_all(current,i);
1736       alloc_reg64(current,i,FTEMP);
1737       minimum_free_regs[i]=HOST_REGS;
1738     }
1739   }
1740 }
1741
1742 void store_alloc(struct regstat *current,int i)
1743 {
1744   clear_const(current,rs2[i]);
1745   if(!(rs2[i])) current->u&=~1LL; // Allow allocating r0 if necessary
1746   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1747   alloc_reg(current,i,rs2[i]);
1748   if(opcode[i]==0x2c||opcode[i]==0x2d||opcode[i]==0x3f) { // 64-bit SDL/SDR/SD
1749     alloc_reg64(current,i,rs2[i]);
1750     if(rs2[i]) alloc_reg(current,i,FTEMP);
1751   }
1752   // If using TLB, need a register for pointer to the mapping table
1753   if(using_tlb) alloc_reg(current,i,TLREG);
1754   #if defined(HOST_IMM8)
1755   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1756   else alloc_reg(current,i,INVCP);
1757   #endif
1758   if(opcode[i]==0x2a||opcode[i]==0x2e||opcode[i]==0x2c||opcode[i]==0x2d) { // SWL/SWL/SDL/SDR
1759     alloc_reg(current,i,FTEMP);
1760   }
1761   // We need a temporary register for address generation
1762   alloc_reg_temp(current,i,-1);
1763   minimum_free_regs[i]=1;
1764 }
1765
1766 void c1ls_alloc(struct regstat *current,int i)
1767 {
1768   //clear_const(current,rs1[i]); // FIXME
1769   clear_const(current,rt1[i]);
1770   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1771   alloc_reg(current,i,CSREG); // Status
1772   alloc_reg(current,i,FTEMP);
1773   if(opcode[i]==0x35||opcode[i]==0x3d) { // 64-bit LDC1/SDC1
1774     alloc_reg64(current,i,FTEMP);
1775   }
1776   // If using TLB, need a register for pointer to the mapping table
1777   if(using_tlb) alloc_reg(current,i,TLREG);
1778   #if defined(HOST_IMM8)
1779   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1780   else if((opcode[i]&0x3b)==0x39) // SWC1/SDC1
1781     alloc_reg(current,i,INVCP);
1782   #endif
1783   // We need a temporary register for address generation
1784   alloc_reg_temp(current,i,-1);
1785 }
1786
1787 void c2ls_alloc(struct regstat *current,int i)
1788 {
1789   clear_const(current,rt1[i]);
1790   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1791   alloc_reg(current,i,FTEMP);
1792   // If using TLB, need a register for pointer to the mapping table
1793   if(using_tlb) alloc_reg(current,i,TLREG);
1794   #if defined(HOST_IMM8)
1795   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1796   else if((opcode[i]&0x3b)==0x3a) // SWC2/SDC2
1797     alloc_reg(current,i,INVCP);
1798   #endif
1799   // We need a temporary register for address generation
1800   alloc_reg_temp(current,i,-1);
1801   minimum_free_regs[i]=1;
1802 }
1803
1804 #ifndef multdiv_alloc
1805 void multdiv_alloc(struct regstat *current,int i)
1806 {
1807   //  case 0x18: MULT
1808   //  case 0x19: MULTU
1809   //  case 0x1A: DIV
1810   //  case 0x1B: DIVU
1811   //  case 0x1C: DMULT
1812   //  case 0x1D: DMULTU
1813   //  case 0x1E: DDIV
1814   //  case 0x1F: DDIVU
1815   clear_const(current,rs1[i]);
1816   clear_const(current,rs2[i]);
1817   if(rs1[i]&&rs2[i])
1818   {
1819     if((opcode2[i]&4)==0) // 32-bit
1820     {
1821       current->u&=~(1LL<<HIREG);
1822       current->u&=~(1LL<<LOREG);
1823       alloc_reg(current,i,HIREG);
1824       alloc_reg(current,i,LOREG);
1825       alloc_reg(current,i,rs1[i]);
1826       alloc_reg(current,i,rs2[i]);
1827       current->is32|=1LL<<HIREG;
1828       current->is32|=1LL<<LOREG;
1829       dirty_reg(current,HIREG);
1830       dirty_reg(current,LOREG);
1831     }
1832     else // 64-bit
1833     {
1834       current->u&=~(1LL<<HIREG);
1835       current->u&=~(1LL<<LOREG);
1836       current->uu&=~(1LL<<HIREG);
1837       current->uu&=~(1LL<<LOREG);
1838       alloc_reg64(current,i,HIREG);
1839       //if(HOST_REGS>10) alloc_reg64(current,i,LOREG);
1840       alloc_reg64(current,i,rs1[i]);
1841       alloc_reg64(current,i,rs2[i]);
1842       alloc_all(current,i);
1843       current->is32&=~(1LL<<HIREG);
1844       current->is32&=~(1LL<<LOREG);
1845       dirty_reg(current,HIREG);
1846       dirty_reg(current,LOREG);
1847       minimum_free_regs[i]=HOST_REGS;
1848     }
1849   }
1850   else
1851   {
1852     // Multiply by zero is zero.
1853     // MIPS does not have a divide by zero exception.
1854     // The result is undefined, we return zero.
1855     alloc_reg(current,i,HIREG);
1856     alloc_reg(current,i,LOREG);
1857     current->is32|=1LL<<HIREG;
1858     current->is32|=1LL<<LOREG;
1859     dirty_reg(current,HIREG);
1860     dirty_reg(current,LOREG);
1861   }
1862 }
1863 #endif
1864
1865 void cop0_alloc(struct regstat *current,int i)
1866 {
1867   if(opcode2[i]==0) // MFC0
1868   {
1869     if(rt1[i]) {
1870       clear_const(current,rt1[i]);
1871       alloc_all(current,i);
1872       alloc_reg(current,i,rt1[i]);
1873       current->is32|=1LL<<rt1[i];
1874       dirty_reg(current,rt1[i]);
1875     }
1876   }
1877   else if(opcode2[i]==4) // MTC0
1878   {
1879     if(rs1[i]){
1880       clear_const(current,rs1[i]);
1881       alloc_reg(current,i,rs1[i]);
1882       alloc_all(current,i);
1883     }
1884     else {
1885       alloc_all(current,i); // FIXME: Keep r0
1886       current->u&=~1LL;
1887       alloc_reg(current,i,0);
1888     }
1889   }
1890   else
1891   {
1892     // TLBR/TLBWI/TLBWR/TLBP/ERET
1893     assert(opcode2[i]==0x10);
1894     alloc_all(current,i);
1895   }
1896   minimum_free_regs[i]=HOST_REGS;
1897 }
1898
1899 void cop1_alloc(struct regstat *current,int i)
1900 {
1901   alloc_reg(current,i,CSREG); // Load status
1902   if(opcode2[i]<3) // MFC1/DMFC1/CFC1
1903   {
1904     if(rt1[i]){
1905       clear_const(current,rt1[i]);
1906       if(opcode2[i]==1) {
1907         alloc_reg64(current,i,rt1[i]); // DMFC1
1908         current->is32&=~(1LL<<rt1[i]);
1909       }else{
1910         alloc_reg(current,i,rt1[i]); // MFC1/CFC1
1911         current->is32|=1LL<<rt1[i];
1912       }
1913       dirty_reg(current,rt1[i]);
1914     }
1915     alloc_reg_temp(current,i,-1);
1916   }
1917   else if(opcode2[i]>3) // MTC1/DMTC1/CTC1
1918   {
1919     if(rs1[i]){
1920       clear_const(current,rs1[i]);
1921       if(opcode2[i]==5)
1922         alloc_reg64(current,i,rs1[i]); // DMTC1
1923       else
1924         alloc_reg(current,i,rs1[i]); // MTC1/CTC1
1925       alloc_reg_temp(current,i,-1);
1926     }
1927     else {
1928       current->u&=~1LL;
1929       alloc_reg(current,i,0);
1930       alloc_reg_temp(current,i,-1);
1931     }
1932   }
1933   minimum_free_regs[i]=1;
1934 }
1935 void fconv_alloc(struct regstat *current,int i)
1936 {
1937   alloc_reg(current,i,CSREG); // Load status
1938   alloc_reg_temp(current,i,-1);
1939   minimum_free_regs[i]=1;
1940 }
1941 void float_alloc(struct regstat *current,int i)
1942 {
1943   alloc_reg(current,i,CSREG); // Load status
1944   alloc_reg_temp(current,i,-1);
1945   minimum_free_regs[i]=1;
1946 }
1947 void c2op_alloc(struct regstat *current,int i)
1948 {
1949   alloc_reg_temp(current,i,-1);
1950 }
1951 void fcomp_alloc(struct regstat *current,int i)
1952 {
1953   alloc_reg(current,i,CSREG); // Load status
1954   alloc_reg(current,i,FSREG); // Load flags
1955   dirty_reg(current,FSREG); // Flag will be modified
1956   alloc_reg_temp(current,i,-1);
1957   minimum_free_regs[i]=1;
1958 }
1959
1960 void syscall_alloc(struct regstat *current,int i)
1961 {
1962   alloc_cc(current,i);
1963   dirty_reg(current,CCREG);
1964   alloc_all(current,i);
1965   minimum_free_regs[i]=HOST_REGS;
1966   current->isconst=0;
1967 }
1968
1969 void delayslot_alloc(struct regstat *current,int i)
1970 {
1971   switch(itype[i]) {
1972     case UJUMP:
1973     case CJUMP:
1974     case SJUMP:
1975     case RJUMP:
1976     case FJUMP:
1977     case SYSCALL:
1978     case HLECALL:
1979     case SPAN:
1980       assem_debug("jump in the delay slot.  this shouldn't happen.\n");//exit(1);
1981       printf("Disabled speculative precompilation\n");
1982       stop_after_jal=1;
1983       break;
1984     case IMM16:
1985       imm16_alloc(current,i);
1986       break;
1987     case LOAD:
1988     case LOADLR:
1989       load_alloc(current,i);
1990       break;
1991     case STORE:
1992     case STORELR:
1993       store_alloc(current,i);
1994       break;
1995     case ALU:
1996       alu_alloc(current,i);
1997       break;
1998     case SHIFT:
1999       shift_alloc(current,i);
2000       break;
2001     case MULTDIV:
2002       multdiv_alloc(current,i);
2003       break;
2004     case SHIFTIMM:
2005       shiftimm_alloc(current,i);
2006       break;
2007     case MOV:
2008       mov_alloc(current,i);
2009       break;
2010     case COP0:
2011       cop0_alloc(current,i);
2012       break;
2013     case COP1:
2014     case COP2:
2015       cop1_alloc(current,i);
2016       break;
2017     case C1LS:
2018       c1ls_alloc(current,i);
2019       break;
2020     case C2LS:
2021       c2ls_alloc(current,i);
2022       break;
2023     case FCONV:
2024       fconv_alloc(current,i);
2025       break;
2026     case FLOAT:
2027       float_alloc(current,i);
2028       break;
2029     case FCOMP:
2030       fcomp_alloc(current,i);
2031       break;
2032     case C2OP:
2033       c2op_alloc(current,i);
2034       break;
2035   }
2036 }
2037
2038 // Special case where a branch and delay slot span two pages in virtual memory
2039 static void pagespan_alloc(struct regstat *current,int i)
2040 {
2041   current->isconst=0;
2042   current->wasconst=0;
2043   regs[i].wasconst=0;
2044   minimum_free_regs[i]=HOST_REGS;
2045   alloc_all(current,i);
2046   alloc_cc(current,i);
2047   dirty_reg(current,CCREG);
2048   if(opcode[i]==3) // JAL
2049   {
2050     alloc_reg(current,i,31);
2051     dirty_reg(current,31);
2052   }
2053   if(opcode[i]==0&&(opcode2[i]&0x3E)==8) // JR/JALR
2054   {
2055     alloc_reg(current,i,rs1[i]);
2056     if (rt1[i]!=0) {
2057       alloc_reg(current,i,rt1[i]);
2058       dirty_reg(current,rt1[i]);
2059     }
2060   }
2061   if((opcode[i]&0x2E)==4) // BEQ/BNE/BEQL/BNEL
2062   {
2063     if(rs1[i]) alloc_reg(current,i,rs1[i]);
2064     if(rs2[i]) alloc_reg(current,i,rs2[i]);
2065     if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
2066     {
2067       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
2068       if(rs2[i]) alloc_reg64(current,i,rs2[i]);
2069     }
2070   }
2071   else
2072   if((opcode[i]&0x2E)==6) // BLEZ/BGTZ/BLEZL/BGTZL
2073   {
2074     if(rs1[i]) alloc_reg(current,i,rs1[i]);
2075     if(!((current->is32>>rs1[i])&1))
2076     {
2077       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
2078     }
2079   }
2080   else
2081   if(opcode[i]==0x11) // BC1
2082   {
2083     alloc_reg(current,i,FSREG);
2084     alloc_reg(current,i,CSREG);
2085   }
2086   //else ...
2087 }
2088
2089 add_stub(int type,int addr,int retaddr,int a,int b,int c,int d,int e)
2090 {
2091   stubs[stubcount][0]=type;
2092   stubs[stubcount][1]=addr;
2093   stubs[stubcount][2]=retaddr;
2094   stubs[stubcount][3]=a;
2095   stubs[stubcount][4]=b;
2096   stubs[stubcount][5]=c;
2097   stubs[stubcount][6]=d;
2098   stubs[stubcount][7]=e;
2099   stubcount++;
2100 }
2101
2102 // Write out a single register
2103 void wb_register(signed char r,signed char regmap[],uint64_t dirty,uint64_t is32)
2104 {
2105   int hr;
2106   for(hr=0;hr<HOST_REGS;hr++) {
2107     if(hr!=EXCLUDE_REG) {
2108       if((regmap[hr]&63)==r) {
2109         if((dirty>>hr)&1) {
2110           if(regmap[hr]<64) {
2111             emit_storereg(r,hr);
2112 #ifndef FORCE32
2113             if((is32>>regmap[hr])&1) {
2114               emit_sarimm(hr,31,hr);
2115               emit_storereg(r|64,hr);
2116             }
2117 #endif
2118           }else{
2119             emit_storereg(r|64,hr);
2120           }
2121         }
2122       }
2123     }
2124   }
2125 }
2126
2127 int mchecksum()
2128 {
2129   //if(!tracedebug) return 0;
2130   int i;
2131   int sum=0;
2132   for(i=0;i<2097152;i++) {
2133     unsigned int temp=sum;
2134     sum<<=1;
2135     sum|=(~temp)>>31;
2136     sum^=((u_int *)rdram)[i];
2137   }
2138   return sum;
2139 }
2140 int rchecksum()
2141 {
2142   int i;
2143   int sum=0;
2144   for(i=0;i<64;i++)
2145     sum^=((u_int *)reg)[i];
2146   return sum;
2147 }
2148 void rlist()
2149 {
2150   int i;
2151   printf("TRACE: ");
2152   for(i=0;i<32;i++)
2153     printf("r%d:%8x%8x ",i,((int *)(reg+i))[1],((int *)(reg+i))[0]);
2154   printf("\n");
2155 #ifndef DISABLE_COP1
2156   printf("TRACE: ");
2157   for(i=0;i<32;i++)
2158     printf("f%d:%8x%8x ",i,((int*)reg_cop1_simple[i])[1],*((int*)reg_cop1_simple[i]));
2159   printf("\n");
2160 #endif
2161 }
2162
2163 void enabletrace()
2164 {
2165   tracedebug=1;
2166 }
2167
2168 void memdebug(int i)
2169 {
2170   //printf("TRACE: count=%d next=%d (checksum %x) lo=%8x%8x\n",Count,next_interupt,mchecksum(),(int)(reg[LOREG]>>32),(int)reg[LOREG]);
2171   //printf("TRACE: count=%d next=%d (rchecksum %x)\n",Count,next_interupt,rchecksum());
2172   //rlist();
2173   //if(tracedebug) {
2174   //if(Count>=-2084597794) {
2175   if((signed int)Count>=-2084597794&&(signed int)Count<0) {
2176   //if(0) {
2177     printf("TRACE: count=%d next=%d (checksum %x)\n",Count,next_interupt,mchecksum());
2178     //printf("TRACE: count=%d next=%d (checksum %x) Status=%x\n",Count,next_interupt,mchecksum(),Status);
2179     //printf("TRACE: count=%d next=%d (checksum %x) hi=%8x%8x\n",Count,next_interupt,mchecksum(),(int)(reg[HIREG]>>32),(int)reg[HIREG]);
2180     rlist();
2181     #ifdef __i386__
2182     printf("TRACE: %x\n",(&i)[-1]);
2183     #endif
2184     #ifdef __arm__
2185     int j;
2186     printf("TRACE: %x \n",(&j)[10]);
2187     printf("TRACE: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x\n",(&j)[1],(&j)[2],(&j)[3],(&j)[4],(&j)[5],(&j)[6],(&j)[7],(&j)[8],(&j)[9],(&j)[10],(&j)[11],(&j)[12],(&j)[13],(&j)[14],(&j)[15],(&j)[16],(&j)[17],(&j)[18],(&j)[19],(&j)[20]);
2188     #endif
2189     //fflush(stdout);
2190   }
2191   //printf("TRACE: %x\n",(&i)[-1]);
2192 }
2193
2194 void tlb_debug(u_int cause, u_int addr, u_int iaddr)
2195 {
2196   printf("TLB Exception: instruction=%x addr=%x cause=%x\n",iaddr, addr, cause);
2197 }
2198
2199 void alu_assemble(int i,struct regstat *i_regs)
2200 {
2201   if(opcode2[i]>=0x20&&opcode2[i]<=0x23) { // ADD/ADDU/SUB/SUBU
2202     if(rt1[i]) {
2203       signed char s1,s2,t;
2204       t=get_reg(i_regs->regmap,rt1[i]);
2205       if(t>=0) {
2206         s1=get_reg(i_regs->regmap,rs1[i]);
2207         s2=get_reg(i_regs->regmap,rs2[i]);
2208         if(rs1[i]&&rs2[i]) {
2209           assert(s1>=0);
2210           assert(s2>=0);
2211           if(opcode2[i]&2) emit_sub(s1,s2,t);
2212           else emit_add(s1,s2,t);
2213         }
2214         else if(rs1[i]) {
2215           if(s1>=0) emit_mov(s1,t);
2216           else emit_loadreg(rs1[i],t);
2217         }
2218         else if(rs2[i]) {
2219           if(s2>=0) {
2220             if(opcode2[i]&2) emit_neg(s2,t);
2221             else emit_mov(s2,t);
2222           }
2223           else {
2224             emit_loadreg(rs2[i],t);
2225             if(opcode2[i]&2) emit_neg(t,t);
2226           }
2227         }
2228         else emit_zeroreg(t);
2229       }
2230     }
2231   }
2232   if(opcode2[i]>=0x2c&&opcode2[i]<=0x2f) { // DADD/DADDU/DSUB/DSUBU
2233     if(rt1[i]) {
2234       signed char s1l,s2l,s1h,s2h,tl,th;
2235       tl=get_reg(i_regs->regmap,rt1[i]);
2236       th=get_reg(i_regs->regmap,rt1[i]|64);
2237       if(tl>=0) {
2238         s1l=get_reg(i_regs->regmap,rs1[i]);
2239         s2l=get_reg(i_regs->regmap,rs2[i]);
2240         s1h=get_reg(i_regs->regmap,rs1[i]|64);
2241         s2h=get_reg(i_regs->regmap,rs2[i]|64);
2242         if(rs1[i]&&rs2[i]) {
2243           assert(s1l>=0);
2244           assert(s2l>=0);
2245           if(opcode2[i]&2) emit_subs(s1l,s2l,tl);
2246           else emit_adds(s1l,s2l,tl);
2247           if(th>=0) {
2248             #ifdef INVERTED_CARRY
2249             if(opcode2[i]&2) {if(s1h!=th) emit_mov(s1h,th);emit_sbb(th,s2h);}
2250             #else
2251             if(opcode2[i]&2) emit_sbc(s1h,s2h,th);
2252             #endif
2253             else emit_add(s1h,s2h,th);
2254           }
2255         }
2256         else if(rs1[i]) {
2257           if(s1l>=0) emit_mov(s1l,tl);
2258           else emit_loadreg(rs1[i],tl);
2259           if(th>=0) {
2260             if(s1h>=0) emit_mov(s1h,th);
2261             else emit_loadreg(rs1[i]|64,th);
2262           }
2263         }
2264         else if(rs2[i]) {
2265           if(s2l>=0) {
2266             if(opcode2[i]&2) emit_negs(s2l,tl);
2267             else emit_mov(s2l,tl);
2268           }
2269           else {
2270             emit_loadreg(rs2[i],tl);
2271             if(opcode2[i]&2) emit_negs(tl,tl);
2272           }
2273           if(th>=0) {
2274             #ifdef INVERTED_CARRY
2275             if(s2h>=0) emit_mov(s2h,th);
2276             else emit_loadreg(rs2[i]|64,th);
2277             if(opcode2[i]&2) {
2278               emit_adcimm(-1,th); // x86 has inverted carry flag
2279               emit_not(th,th);
2280             }
2281             #else
2282             if(opcode2[i]&2) {
2283               if(s2h>=0) emit_rscimm(s2h,0,th);
2284               else {
2285                 emit_loadreg(rs2[i]|64,th);
2286                 emit_rscimm(th,0,th);
2287               }
2288             }else{
2289               if(s2h>=0) emit_mov(s2h,th);
2290               else emit_loadreg(rs2[i]|64,th);
2291             }
2292             #endif
2293           }
2294         }
2295         else {
2296           emit_zeroreg(tl);
2297           if(th>=0) emit_zeroreg(th);
2298         }
2299       }
2300     }
2301   }
2302   if(opcode2[i]==0x2a||opcode2[i]==0x2b) { // SLT/SLTU
2303     if(rt1[i]) {
2304       signed char s1l,s1h,s2l,s2h,t;
2305       if(!((i_regs->was32>>rs1[i])&(i_regs->was32>>rs2[i])&1))
2306       {
2307         t=get_reg(i_regs->regmap,rt1[i]);
2308         //assert(t>=0);
2309         if(t>=0) {
2310           s1l=get_reg(i_regs->regmap,rs1[i]);
2311           s1h=get_reg(i_regs->regmap,rs1[i]|64);
2312           s2l=get_reg(i_regs->regmap,rs2[i]);
2313           s2h=get_reg(i_regs->regmap,rs2[i]|64);
2314           if(rs2[i]==0) // rx<r0
2315           {
2316             assert(s1h>=0);
2317             if(opcode2[i]==0x2a) // SLT
2318               emit_shrimm(s1h,31,t);
2319             else // SLTU (unsigned can not be less than zero)
2320               emit_zeroreg(t);
2321           }
2322           else if(rs1[i]==0) // r0<rx
2323           {
2324             assert(s2h>=0);
2325             if(opcode2[i]==0x2a) // SLT
2326               emit_set_gz64_32(s2h,s2l,t);
2327             else // SLTU (set if not zero)
2328               emit_set_nz64_32(s2h,s2l,t);
2329           }
2330           else {
2331             assert(s1l>=0);assert(s1h>=0);
2332             assert(s2l>=0);assert(s2h>=0);
2333             if(opcode2[i]==0x2a) // SLT
2334               emit_set_if_less64_32(s1h,s1l,s2h,s2l,t);
2335             else // SLTU
2336               emit_set_if_carry64_32(s1h,s1l,s2h,s2l,t);
2337           }
2338         }
2339       } else {
2340         t=get_reg(i_regs->regmap,rt1[i]);
2341         //assert(t>=0);
2342         if(t>=0) {
2343           s1l=get_reg(i_regs->regmap,rs1[i]);
2344           s2l=get_reg(i_regs->regmap,rs2[i]);
2345           if(rs2[i]==0) // rx<r0
2346           {
2347             assert(s1l>=0);
2348             if(opcode2[i]==0x2a) // SLT
2349               emit_shrimm(s1l,31,t);
2350             else // SLTU (unsigned can not be less than zero)
2351               emit_zeroreg(t);
2352           }
2353           else if(rs1[i]==0) // r0<rx
2354           {
2355             assert(s2l>=0);
2356             if(opcode2[i]==0x2a) // SLT
2357               emit_set_gz32(s2l,t);
2358             else // SLTU (set if not zero)
2359               emit_set_nz32(s2l,t);
2360           }
2361           else{
2362             assert(s1l>=0);assert(s2l>=0);
2363             if(opcode2[i]==0x2a) // SLT
2364               emit_set_if_less32(s1l,s2l,t);
2365             else // SLTU
2366               emit_set_if_carry32(s1l,s2l,t);
2367           }
2368         }
2369       }
2370     }
2371   }
2372   if(opcode2[i]>=0x24&&opcode2[i]<=0x27) { // AND/OR/XOR/NOR
2373     if(rt1[i]) {
2374       signed char s1l,s1h,s2l,s2h,th,tl;
2375       tl=get_reg(i_regs->regmap,rt1[i]);
2376       th=get_reg(i_regs->regmap,rt1[i]|64);
2377       if(!((i_regs->was32>>rs1[i])&(i_regs->was32>>rs2[i])&1)&&th>=0)
2378       {
2379         assert(tl>=0);
2380         if(tl>=0) {
2381           s1l=get_reg(i_regs->regmap,rs1[i]);
2382           s1h=get_reg(i_regs->regmap,rs1[i]|64);
2383           s2l=get_reg(i_regs->regmap,rs2[i]);
2384           s2h=get_reg(i_regs->regmap,rs2[i]|64);
2385           if(rs1[i]&&rs2[i]) {
2386             assert(s1l>=0);assert(s1h>=0);
2387             assert(s2l>=0);assert(s2h>=0);
2388             if(opcode2[i]==0x24) { // AND
2389               emit_and(s1l,s2l,tl);
2390               emit_and(s1h,s2h,th);
2391             } else
2392             if(opcode2[i]==0x25) { // OR
2393               emit_or(s1l,s2l,tl);
2394               emit_or(s1h,s2h,th);
2395             } else
2396             if(opcode2[i]==0x26) { // XOR
2397               emit_xor(s1l,s2l,tl);
2398               emit_xor(s1h,s2h,th);
2399             } else
2400             if(opcode2[i]==0x27) { // NOR
2401               emit_or(s1l,s2l,tl);
2402               emit_or(s1h,s2h,th);
2403               emit_not(tl,tl);
2404               emit_not(th,th);
2405             }
2406           }
2407           else
2408           {
2409             if(opcode2[i]==0x24) { // AND
2410               emit_zeroreg(tl);
2411               emit_zeroreg(th);
2412             } else
2413             if(opcode2[i]==0x25||opcode2[i]==0x26) { // OR/XOR
2414               if(rs1[i]){
2415                 if(s1l>=0) emit_mov(s1l,tl);
2416                 else emit_loadreg(rs1[i],tl);
2417                 if(s1h>=0) emit_mov(s1h,th);
2418                 else emit_loadreg(rs1[i]|64,th);
2419               }
2420               else
2421               if(rs2[i]){
2422                 if(s2l>=0) emit_mov(s2l,tl);
2423                 else emit_loadreg(rs2[i],tl);
2424                 if(s2h>=0) emit_mov(s2h,th);
2425                 else emit_loadreg(rs2[i]|64,th);
2426               }
2427               else{
2428                 emit_zeroreg(tl);
2429                 emit_zeroreg(th);
2430               }
2431             } else
2432             if(opcode2[i]==0x27) { // NOR
2433               if(rs1[i]){
2434                 if(s1l>=0) emit_not(s1l,tl);
2435                 else{
2436                   emit_loadreg(rs1[i],tl);
2437                   emit_not(tl,tl);
2438                 }
2439                 if(s1h>=0) emit_not(s1h,th);
2440                 else{
2441                   emit_loadreg(rs1[i]|64,th);
2442                   emit_not(th,th);
2443                 }
2444               }
2445               else
2446               if(rs2[i]){
2447                 if(s2l>=0) emit_not(s2l,tl);
2448                 else{
2449                   emit_loadreg(rs2[i],tl);
2450                   emit_not(tl,tl);
2451                 }
2452                 if(s2h>=0) emit_not(s2h,th);
2453                 else{
2454                   emit_loadreg(rs2[i]|64,th);
2455                   emit_not(th,th);
2456                 }
2457               }
2458               else {
2459                 emit_movimm(-1,tl);
2460                 emit_movimm(-1,th);
2461               }
2462             }
2463           }
2464         }
2465       }
2466       else
2467       {
2468         // 32 bit
2469         if(tl>=0) {
2470           s1l=get_reg(i_regs->regmap,rs1[i]);
2471           s2l=get_reg(i_regs->regmap,rs2[i]);
2472           if(rs1[i]&&rs2[i]) {
2473             assert(s1l>=0);
2474             assert(s2l>=0);
2475             if(opcode2[i]==0x24) { // AND
2476               emit_and(s1l,s2l,tl);
2477             } else
2478             if(opcode2[i]==0x25) { // OR
2479               emit_or(s1l,s2l,tl);
2480             } else
2481             if(opcode2[i]==0x26) { // XOR
2482               emit_xor(s1l,s2l,tl);
2483             } else
2484             if(opcode2[i]==0x27) { // NOR
2485               emit_or(s1l,s2l,tl);
2486               emit_not(tl,tl);
2487             }
2488           }
2489           else
2490           {
2491             if(opcode2[i]==0x24) { // AND
2492               emit_zeroreg(tl);
2493             } else
2494             if(opcode2[i]==0x25||opcode2[i]==0x26) { // OR/XOR
2495               if(rs1[i]){
2496                 if(s1l>=0) emit_mov(s1l,tl);
2497                 else emit_loadreg(rs1[i],tl); // CHECK: regmap_entry?
2498               }
2499               else
2500               if(rs2[i]){
2501                 if(s2l>=0) emit_mov(s2l,tl);
2502                 else emit_loadreg(rs2[i],tl); // CHECK: regmap_entry?
2503               }
2504               else emit_zeroreg(tl);
2505             } else
2506             if(opcode2[i]==0x27) { // NOR
2507               if(rs1[i]){
2508                 if(s1l>=0) emit_not(s1l,tl);
2509                 else {
2510                   emit_loadreg(rs1[i],tl);
2511                   emit_not(tl,tl);
2512                 }
2513               }
2514               else
2515               if(rs2[i]){
2516                 if(s2l>=0) emit_not(s2l,tl);
2517                 else {
2518                   emit_loadreg(rs2[i],tl);
2519                   emit_not(tl,tl);
2520                 }
2521               }
2522               else emit_movimm(-1,tl);
2523             }
2524           }
2525         }
2526       }
2527     }
2528   }
2529 }
2530
2531 void imm16_assemble(int i,struct regstat *i_regs)
2532 {
2533   if (opcode[i]==0x0f) { // LUI
2534     if(rt1[i]) {
2535       signed char t;
2536       t=get_reg(i_regs->regmap,rt1[i]);
2537       //assert(t>=0);
2538       if(t>=0) {
2539         if(!((i_regs->isconst>>t)&1))
2540           emit_movimm(imm[i]<<16,t);
2541       }
2542     }
2543   }
2544   if(opcode[i]==0x08||opcode[i]==0x09) { // ADDI/ADDIU
2545     if(rt1[i]) {
2546       signed char s,t;
2547       t=get_reg(i_regs->regmap,rt1[i]);
2548       s=get_reg(i_regs->regmap,rs1[i]);
2549       if(rs1[i]) {
2550         //assert(t>=0);
2551         //assert(s>=0);
2552         if(t>=0) {
2553           if(!((i_regs->isconst>>t)&1)) {
2554             if(s<0) {
2555               if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2556               emit_addimm(t,imm[i],t);
2557             }else{
2558               if(!((i_regs->wasconst>>s)&1))
2559                 emit_addimm(s,imm[i],t);
2560               else
2561                 emit_movimm(constmap[i][s]+imm[i],t);
2562             }
2563           }
2564         }
2565       } else {
2566         if(t>=0) {
2567           if(!((i_regs->isconst>>t)&1))
2568             emit_movimm(imm[i],t);
2569         }
2570       }
2571     }
2572   }
2573   if(opcode[i]==0x18||opcode[i]==0x19) { // DADDI/DADDIU
2574     if(rt1[i]) {
2575       signed char sh,sl,th,tl;
2576       th=get_reg(i_regs->regmap,rt1[i]|64);
2577       tl=get_reg(i_regs->regmap,rt1[i]);
2578       sh=get_reg(i_regs->regmap,rs1[i]|64);
2579       sl=get_reg(i_regs->regmap,rs1[i]);
2580       if(tl>=0) {
2581         if(rs1[i]) {
2582           assert(sh>=0);
2583           assert(sl>=0);
2584           if(th>=0) {
2585             emit_addimm64_32(sh,sl,imm[i],th,tl);
2586           }
2587           else {
2588             emit_addimm(sl,imm[i],tl);
2589           }
2590         } else {
2591           emit_movimm(imm[i],tl);
2592           if(th>=0) emit_movimm(((signed int)imm[i])>>31,th);
2593         }
2594       }
2595     }
2596   }
2597   else if(opcode[i]==0x0a||opcode[i]==0x0b) { // SLTI/SLTIU
2598     if(rt1[i]) {
2599       //assert(rs1[i]!=0); // r0 might be valid, but it's probably a bug
2600       signed char sh,sl,t;
2601       t=get_reg(i_regs->regmap,rt1[i]);
2602       sh=get_reg(i_regs->regmap,rs1[i]|64);
2603       sl=get_reg(i_regs->regmap,rs1[i]);
2604       //assert(t>=0);
2605       if(t>=0) {
2606         if(rs1[i]>0) {
2607           if(sh<0) assert((i_regs->was32>>rs1[i])&1);
2608           if(sh<0||((i_regs->was32>>rs1[i])&1)) {
2609             if(opcode[i]==0x0a) { // SLTI
2610               if(sl<0) {
2611                 if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2612                 emit_slti32(t,imm[i],t);
2613               }else{
2614                 emit_slti32(sl,imm[i],t);
2615               }
2616             }
2617             else { // SLTIU
2618               if(sl<0) {
2619                 if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2620                 emit_sltiu32(t,imm[i],t);
2621               }else{
2622                 emit_sltiu32(sl,imm[i],t);
2623               }
2624             }
2625           }else{ // 64-bit
2626             assert(sl>=0);
2627             if(opcode[i]==0x0a) // SLTI
2628               emit_slti64_32(sh,sl,imm[i],t);
2629             else // SLTIU
2630               emit_sltiu64_32(sh,sl,imm[i],t);
2631           }
2632         }else{
2633           // SLTI(U) with r0 is just stupid,
2634           // nonetheless examples can be found
2635           if(opcode[i]==0x0a) // SLTI
2636             if(0<imm[i]) emit_movimm(1,t);
2637             else emit_zeroreg(t);
2638           else // SLTIU
2639           {
2640             if(imm[i]) emit_movimm(1,t);
2641             else emit_zeroreg(t);
2642           }
2643         }
2644       }
2645     }
2646   }
2647   else if(opcode[i]>=0x0c&&opcode[i]<=0x0e) { // ANDI/ORI/XORI
2648     if(rt1[i]) {
2649       signed char sh,sl,th,tl;
2650       th=get_reg(i_regs->regmap,rt1[i]|64);
2651       tl=get_reg(i_regs->regmap,rt1[i]);
2652       sh=get_reg(i_regs->regmap,rs1[i]|64);
2653       sl=get_reg(i_regs->regmap,rs1[i]);
2654       if(tl>=0 && !((i_regs->isconst>>tl)&1)) {
2655         if(opcode[i]==0x0c) //ANDI
2656         {
2657           if(rs1[i]) {
2658             if(sl<0) {
2659               if(i_regs->regmap_entry[tl]!=rs1[i]) emit_loadreg(rs1[i],tl);
2660               emit_andimm(tl,imm[i],tl);
2661             }else{
2662               if(!((i_regs->wasconst>>sl)&1))
2663                 emit_andimm(sl,imm[i],tl);
2664               else
2665                 emit_movimm(constmap[i][sl]&imm[i],tl);
2666             }
2667           }
2668           else
2669             emit_zeroreg(tl);
2670           if(th>=0) emit_zeroreg(th);
2671         }
2672         else
2673         {
2674           if(rs1[i]) {
2675             if(sl<0) {
2676               if(i_regs->regmap_entry[tl]!=rs1[i]) emit_loadreg(rs1[i],tl);
2677             }
2678             if(th>=0) {
2679               if(sh<0) {
2680                 emit_loadreg(rs1[i]|64,th);
2681               }else{
2682                 emit_mov(sh,th);
2683               }
2684             }
2685             if(opcode[i]==0x0d) //ORI
2686             if(sl<0) {
2687               emit_orimm(tl,imm[i],tl);
2688             }else{
2689               if(!((i_regs->wasconst>>sl)&1))
2690                 emit_orimm(sl,imm[i],tl);
2691               else
2692                 emit_movimm(constmap[i][sl]|imm[i],tl);
2693             }
2694             if(opcode[i]==0x0e) //XORI
2695             if(sl<0) {
2696               emit_xorimm(tl,imm[i],tl);
2697             }else{
2698               if(!((i_regs->wasconst>>sl)&1))
2699                 emit_xorimm(sl,imm[i],tl);
2700               else
2701                 emit_movimm(constmap[i][sl]^imm[i],tl);
2702             }
2703           }
2704           else {
2705             emit_movimm(imm[i],tl);
2706             if(th>=0) emit_zeroreg(th);
2707           }
2708         }
2709       }
2710     }
2711   }
2712 }
2713
2714 void shiftimm_assemble(int i,struct regstat *i_regs)
2715 {
2716   if(opcode2[i]<=0x3) // SLL/SRL/SRA
2717   {
2718     if(rt1[i]) {
2719       signed char s,t;
2720       t=get_reg(i_regs->regmap,rt1[i]);
2721       s=get_reg(i_regs->regmap,rs1[i]);
2722       //assert(t>=0);
2723       if(t>=0&&!((i_regs->isconst>>t)&1)){
2724         if(rs1[i]==0)
2725         {
2726           emit_zeroreg(t);
2727         }
2728         else
2729         {
2730           if(s<0&&i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2731           if(imm[i]) {
2732             if(opcode2[i]==0) // SLL
2733             {
2734               emit_shlimm(s<0?t:s,imm[i],t);
2735             }
2736             if(opcode2[i]==2) // SRL
2737             {
2738               emit_shrimm(s<0?t:s,imm[i],t);
2739             }
2740             if(opcode2[i]==3) // SRA
2741             {
2742               emit_sarimm(s<0?t:s,imm[i],t);
2743             }
2744           }else{
2745             // Shift by zero
2746             if(s>=0 && s!=t) emit_mov(s,t);
2747           }
2748         }
2749       }
2750       //emit_storereg(rt1[i],t); //DEBUG
2751     }
2752   }
2753   if(opcode2[i]>=0x38&&opcode2[i]<=0x3b) // DSLL/DSRL/DSRA
2754   {
2755     if(rt1[i]) {
2756       signed char sh,sl,th,tl;
2757       th=get_reg(i_regs->regmap,rt1[i]|64);
2758       tl=get_reg(i_regs->regmap,rt1[i]);
2759       sh=get_reg(i_regs->regmap,rs1[i]|64);
2760       sl=get_reg(i_regs->regmap,rs1[i]);
2761       if(tl>=0) {
2762         if(rs1[i]==0)
2763         {
2764           emit_zeroreg(tl);
2765           if(th>=0) emit_zeroreg(th);
2766         }
2767         else
2768         {
2769           assert(sl>=0);
2770           assert(sh>=0);
2771           if(imm[i]) {
2772             if(opcode2[i]==0x38) // DSLL
2773             {
2774               if(th>=0) emit_shldimm(sh,sl,imm[i],th);
2775               emit_shlimm(sl,imm[i],tl);
2776             }
2777             if(opcode2[i]==0x3a) // DSRL
2778             {
2779               emit_shrdimm(sl,sh,imm[i],tl);
2780               if(th>=0) emit_shrimm(sh,imm[i],th);
2781             }
2782             if(opcode2[i]==0x3b) // DSRA
2783             {
2784               emit_shrdimm(sl,sh,imm[i],tl);
2785               if(th>=0) emit_sarimm(sh,imm[i],th);
2786             }
2787           }else{
2788             // Shift by zero
2789             if(sl!=tl) emit_mov(sl,tl);
2790             if(th>=0&&sh!=th) emit_mov(sh,th);
2791           }
2792         }
2793       }
2794     }
2795   }
2796   if(opcode2[i]==0x3c) // DSLL32
2797   {
2798     if(rt1[i]) {
2799       signed char sl,tl,th;
2800       tl=get_reg(i_regs->regmap,rt1[i]);
2801       th=get_reg(i_regs->regmap,rt1[i]|64);
2802       sl=get_reg(i_regs->regmap,rs1[i]);
2803       if(th>=0||tl>=0){
2804         assert(tl>=0);
2805         assert(th>=0);
2806         assert(sl>=0);
2807         emit_mov(sl,th);
2808         emit_zeroreg(tl);
2809         if(imm[i]>32)
2810         {
2811           emit_shlimm(th,imm[i]&31,th);
2812         }
2813       }
2814     }
2815   }
2816   if(opcode2[i]==0x3e) // DSRL32
2817   {
2818     if(rt1[i]) {
2819       signed char sh,tl,th;
2820       tl=get_reg(i_regs->regmap,rt1[i]);
2821       th=get_reg(i_regs->regmap,rt1[i]|64);
2822       sh=get_reg(i_regs->regmap,rs1[i]|64);
2823       if(tl>=0){
2824         assert(sh>=0);
2825         emit_mov(sh,tl);
2826         if(th>=0) emit_zeroreg(th);
2827         if(imm[i]>32)
2828         {
2829           emit_shrimm(tl,imm[i]&31,tl);
2830         }
2831       }
2832     }
2833   }
2834   if(opcode2[i]==0x3f) // DSRA32
2835   {
2836     if(rt1[i]) {
2837       signed char sh,tl;
2838       tl=get_reg(i_regs->regmap,rt1[i]);
2839       sh=get_reg(i_regs->regmap,rs1[i]|64);
2840       if(tl>=0){
2841         assert(sh>=0);
2842         emit_mov(sh,tl);
2843         if(imm[i]>32)
2844         {
2845           emit_sarimm(tl,imm[i]&31,tl);
2846         }
2847       }
2848     }
2849   }
2850 }
2851
2852 #ifndef shift_assemble
2853 void shift_assemble(int i,struct regstat *i_regs)
2854 {
2855   printf("Need shift_assemble for this architecture.\n");
2856   exit(1);
2857 }
2858 #endif
2859
2860 void load_assemble(int i,struct regstat *i_regs)
2861 {
2862   int s,th,tl,addr,map=-1;
2863   int offset;
2864   int jaddr=0;
2865   int memtarget=0,c=0;
2866   int fastload_reg_override=0;
2867   u_int hr,reglist=0;
2868   th=get_reg(i_regs->regmap,rt1[i]|64);
2869   tl=get_reg(i_regs->regmap,rt1[i]);
2870   s=get_reg(i_regs->regmap,rs1[i]);
2871   offset=imm[i];
2872   for(hr=0;hr<HOST_REGS;hr++) {
2873     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
2874   }
2875   if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG);
2876   if(s>=0) {
2877     c=(i_regs->wasconst>>s)&1;
2878     if (c) {
2879       memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
2880       if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
2881     }
2882   }
2883   //printf("load_assemble: c=%d\n",c);
2884   //if(c) printf("load_assemble: const=%x\n",(int)constmap[i][s]+offset);
2885   // FIXME: Even if the load is a NOP, we should check for pagefaults...
2886 #ifdef PCSX
2887   if(tl<0&&(!c||(((u_int)constmap[i][s]+offset)>>16)==0x1f80)
2888     ||rt1[i]==0) {
2889       // could be FIFO, must perform the read
2890       // ||dummy read
2891       assem_debug("(forced read)\n");
2892       tl=get_reg(i_regs->regmap,-1);
2893       assert(tl>=0);
2894   }
2895 #endif
2896   if(offset||s<0||c) addr=tl;
2897   else addr=s;
2898   //if(tl<0) tl=get_reg(i_regs->regmap,-1);
2899  if(tl>=0) {
2900   //printf("load_assemble: c=%d\n",c);
2901   //if(c) printf("load_assemble: const=%x\n",(int)constmap[i][s]+offset);
2902   assert(tl>=0); // Even if the load is a NOP, we must check for pagefaults and I/O
2903   reglist&=~(1<<tl);
2904   if(th>=0) reglist&=~(1<<th);
2905   if(!using_tlb) {
2906     if(!c) {
2907       #ifdef RAM_OFFSET
2908       map=get_reg(i_regs->regmap,ROREG);
2909       if(map<0) emit_loadreg(ROREG,map=HOST_TEMPREG);
2910       #endif
2911 //#define R29_HACK 1
2912       #ifdef R29_HACK
2913       // Strmnnrmn's speed hack
2914       if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
2915       #endif
2916       {
2917         jaddr=emit_fastpath_cmp_jump(i,addr,&fastload_reg_override);
2918       }
2919     }
2920   }else{ // using tlb
2921     int x=0;
2922     if (opcode[i]==0x20||opcode[i]==0x24) x=3; // LB/LBU
2923     if (opcode[i]==0x21||opcode[i]==0x25) x=2; // LH/LHU
2924     map=get_reg(i_regs->regmap,TLREG);
2925     assert(map>=0);
2926     reglist&=~(1<<map);
2927     map=do_tlb_r(addr,tl,map,x,-1,-1,c,constmap[i][s]+offset);
2928     do_tlb_r_branch(map,c,constmap[i][s]+offset,&jaddr);
2929   }
2930   int dummy=(rt1[i]==0)||(tl!=get_reg(i_regs->regmap,rt1[i])); // ignore loads to r0 and unneeded reg
2931   if (opcode[i]==0x20) { // LB
2932     if(!c||memtarget) {
2933       if(!dummy) {
2934         #ifdef HOST_IMM_ADDR32
2935         if(c)
2936           emit_movsbl_tlb((constmap[i][s]+offset)^3,map,tl);
2937         else
2938         #endif
2939         {
2940           //emit_xorimm(addr,3,tl);
2941           //gen_tlb_addr_r(tl,map);
2942           //emit_movsbl_indexed((int)rdram-0x80000000,tl,tl);
2943           int x=0,a=tl;
2944 #ifdef BIG_ENDIAN_MIPS
2945           if(!c) emit_xorimm(addr,3,tl);
2946           else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
2947 #else
2948           if(!c) a=addr;
2949 #endif
2950           if(fastload_reg_override) a=fastload_reg_override;
2951
2952           emit_movsbl_indexed_tlb(x,a,map,tl);
2953         }
2954       }
2955       if(jaddr)
2956         add_stub(LOADB_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2957     }
2958     else
2959       inline_readstub(LOADB_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2960   }
2961   if (opcode[i]==0x21) { // LH
2962     if(!c||memtarget) {
2963       if(!dummy) {
2964         #ifdef HOST_IMM_ADDR32
2965         if(c)
2966           emit_movswl_tlb((constmap[i][s]+offset)^2,map,tl);
2967         else
2968         #endif
2969         {
2970           int x=0,a=tl;
2971 #ifdef BIG_ENDIAN_MIPS
2972           if(!c) emit_xorimm(addr,2,tl);
2973           else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
2974 #else
2975           if(!c) a=addr;
2976 #endif
2977           if(fastload_reg_override) a=fastload_reg_override;
2978           //#ifdef
2979           //emit_movswl_indexed_tlb(x,tl,map,tl);
2980           //else
2981           if(map>=0) {
2982             gen_tlb_addr_r(a,map);
2983             emit_movswl_indexed(x,a,tl);
2984           }else{
2985             #ifdef RAM_OFFSET
2986             emit_movswl_indexed(x,a,tl);
2987             #else
2988             emit_movswl_indexed((int)rdram-0x80000000+x,a,tl);
2989             #endif
2990           }
2991         }
2992       }
2993       if(jaddr)
2994         add_stub(LOADH_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2995     }
2996     else
2997       inline_readstub(LOADH_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2998   }
2999   if (opcode[i]==0x23) { // LW
3000     if(!c||memtarget) {
3001       if(!dummy) {
3002         int a=addr;
3003         if(fastload_reg_override) a=fastload_reg_override;
3004         //emit_readword_indexed((int)rdram-0x80000000,addr,tl);
3005         #ifdef HOST_IMM_ADDR32
3006         if(c)
3007           emit_readword_tlb(constmap[i][s]+offset,map,tl);
3008         else
3009         #endif
3010         emit_readword_indexed_tlb(0,a,map,tl);
3011       }
3012       if(jaddr)
3013         add_stub(LOADW_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3014     }
3015     else
3016       inline_readstub(LOADW_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
3017   }
3018   if (opcode[i]==0x24) { // LBU
3019     if(!c||memtarget) {
3020       if(!dummy) {
3021         #ifdef HOST_IMM_ADDR32
3022         if(c)
3023           emit_movzbl_tlb((constmap[i][s]+offset)^3,map,tl);
3024         else
3025         #endif
3026         {
3027           //emit_xorimm(addr,3,tl);
3028           //gen_tlb_addr_r(tl,map);
3029           //emit_movzbl_indexed((int)rdram-0x80000000,tl,tl);
3030           int x=0,a=tl;
3031 #ifdef BIG_ENDIAN_MIPS
3032           if(!c) emit_xorimm(addr,3,tl);
3033           else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
3034 #else
3035           if(!c) a=addr;
3036 #endif
3037           if(fastload_reg_override) a=fastload_reg_override;
3038
3039           emit_movzbl_indexed_tlb(x,a,map,tl);
3040         }
3041       }
3042       if(jaddr)
3043         add_stub(LOADBU_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3044     }
3045     else
3046       inline_readstub(LOADBU_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
3047   }
3048   if (opcode[i]==0x25) { // LHU
3049     if(!c||memtarget) {
3050       if(!dummy) {
3051         #ifdef HOST_IMM_ADDR32
3052         if(c)
3053           emit_movzwl_tlb((constmap[i][s]+offset)^2,map,tl);
3054         else
3055         #endif
3056         {
3057           int x=0,a=tl;
3058 #ifdef BIG_ENDIAN_MIPS
3059           if(!c) emit_xorimm(addr,2,tl);
3060           else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
3061 #else
3062           if(!c) a=addr;
3063 #endif
3064           if(fastload_reg_override) a=fastload_reg_override;
3065           //#ifdef
3066           //emit_movzwl_indexed_tlb(x,tl,map,tl);
3067           //#else
3068           if(map>=0) {
3069             gen_tlb_addr_r(a,map);
3070             emit_movzwl_indexed(x,a,tl);
3071           }else{
3072             #ifdef RAM_OFFSET
3073             emit_movzwl_indexed(x,a,tl);
3074             #else
3075             emit_movzwl_indexed((int)rdram-0x80000000+x,a,tl);
3076             #endif
3077           }
3078         }
3079       }
3080       if(jaddr)
3081         add_stub(LOADHU_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3082     }
3083     else
3084       inline_readstub(LOADHU_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
3085   }
3086   if (opcode[i]==0x27) { // LWU
3087     assert(th>=0);
3088     if(!c||memtarget) {
3089       if(!dummy) {
3090         int a=addr;
3091         if(fastload_reg_override) a=fastload_reg_override;
3092         //emit_readword_indexed((int)rdram-0x80000000,addr,tl);
3093         #ifdef HOST_IMM_ADDR32
3094         if(c)
3095           emit_readword_tlb(constmap[i][s]+offset,map,tl);
3096         else
3097         #endif
3098         emit_readword_indexed_tlb(0,a,map,tl);
3099       }
3100       if(jaddr)
3101         add_stub(LOADW_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3102     }
3103     else {
3104       inline_readstub(LOADW_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
3105     }
3106     emit_zeroreg(th);
3107   }
3108   if (opcode[i]==0x37) { // LD
3109     if(!c||memtarget) {
3110       if(!dummy) {
3111         int a=addr;
3112         if(fastload_reg_override) a=fastload_reg_override;
3113         //gen_tlb_addr_r(tl,map);
3114         //if(th>=0) emit_readword_indexed((int)rdram-0x80000000,addr,th);
3115         //emit_readword_indexed((int)rdram-0x7FFFFFFC,addr,tl);
3116         #ifdef HOST_IMM_ADDR32
3117         if(c)
3118           emit_readdword_tlb(constmap[i][s]+offset,map,th,tl);
3119         else
3120         #endif
3121         emit_readdword_indexed_tlb(0,a,map,th,tl);
3122       }
3123       if(jaddr)
3124         add_stub(LOADD_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3125     }
3126     else
3127       inline_readstub(LOADD_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
3128   }
3129  }
3130   //emit_storereg(rt1[i],tl); // DEBUG
3131   //if(opcode[i]==0x23)
3132   //if(opcode[i]==0x24)
3133   //if(opcode[i]==0x23||opcode[i]==0x24)
3134   /*if(opcode[i]==0x21||opcode[i]==0x23||opcode[i]==0x24)
3135   {
3136     //emit_pusha();
3137     save_regs(0x100f);
3138         emit_readword((int)&last_count,ECX);
3139         #ifdef __i386__
3140         if(get_reg(i_regs->regmap,CCREG)<0)
3141           emit_loadreg(CCREG,HOST_CCREG);
3142         emit_add(HOST_CCREG,ECX,HOST_CCREG);
3143         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
3144         emit_writeword(HOST_CCREG,(int)&Count);
3145         #endif
3146         #ifdef __arm__
3147         if(get_reg(i_regs->regmap,CCREG)<0)
3148           emit_loadreg(CCREG,0);
3149         else
3150           emit_mov(HOST_CCREG,0);
3151         emit_add(0,ECX,0);
3152         emit_addimm(0,2*ccadj[i],0);
3153         emit_writeword(0,(int)&Count);
3154         #endif
3155     emit_call((int)memdebug);
3156     //emit_popa();
3157     restore_regs(0x100f);
3158   }/**/
3159 }
3160
3161 #ifndef loadlr_assemble
3162 void loadlr_assemble(int i,struct regstat *i_regs)
3163 {
3164   printf("Need loadlr_assemble for this architecture.\n");
3165   exit(1);
3166 }
3167 #endif
3168
3169 void store_assemble(int i,struct regstat *i_regs)
3170 {
3171   int s,th,tl,map=-1;
3172   int addr,temp;
3173   int offset;
3174   int jaddr=0,jaddr2,type;
3175   int memtarget=0,c=0;
3176   int agr=AGEN1+(i&1);
3177   int faststore_reg_override=0;
3178   u_int hr,reglist=0;
3179   th=get_reg(i_regs->regmap,rs2[i]|64);
3180   tl=get_reg(i_regs->regmap,rs2[i]);
3181   s=get_reg(i_regs->regmap,rs1[i]);
3182   temp=get_reg(i_regs->regmap,agr);
3183   if(temp<0) temp=get_reg(i_regs->regmap,-1);
3184   offset=imm[i];
3185   if(s>=0) {
3186     c=(i_regs->wasconst>>s)&1;
3187     if(c) {
3188       memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
3189       if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
3190     }
3191   }
3192   assert(tl>=0);
3193   assert(temp>=0);
3194   for(hr=0;hr<HOST_REGS;hr++) {
3195     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3196   }
3197   if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG);
3198   if(offset||s<0||c) addr=temp;
3199   else addr=s;
3200   if(!using_tlb) {
3201     if(!c) {
3202       #ifndef PCSX
3203       #ifdef R29_HACK
3204       // Strmnnrmn's speed hack
3205       if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
3206       #endif
3207       emit_cmpimm(addr,RAM_SIZE);
3208       #ifdef DESTRUCTIVE_SHIFT
3209       if(s==addr) emit_mov(s,temp);
3210       #endif
3211       #ifdef R29_HACK
3212       memtarget=1;
3213       if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
3214       #endif
3215       {
3216         jaddr=(int)out;
3217         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
3218         // Hint to branch predictor that the branch is unlikely to be taken
3219         if(rs1[i]>=28)
3220           emit_jno_unlikely(0);
3221         else
3222         #endif
3223         emit_jno(0);
3224       }
3225       #else
3226         jaddr=emit_fastpath_cmp_jump(i,addr,&faststore_reg_override);
3227       #endif
3228     }
3229   }else{ // using tlb
3230     int x=0;
3231     if (opcode[i]==0x28) x=3; // SB
3232     if (opcode[i]==0x29) x=2; // SH
3233     map=get_reg(i_regs->regmap,TLREG);
3234     assert(map>=0);
3235     reglist&=~(1<<map);
3236     map=do_tlb_w(addr,temp,map,x,c,constmap[i][s]+offset);
3237     do_tlb_w_branch(map,c,constmap[i][s]+offset,&jaddr);
3238   }
3239
3240   if (opcode[i]==0x28) { // SB
3241     if(!c||memtarget) {
3242       int x=0,a=temp;
3243 #ifdef BIG_ENDIAN_MIPS
3244       if(!c) emit_xorimm(addr,3,temp);
3245       else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
3246 #else
3247       if(!c) a=addr;
3248 #endif
3249       if(faststore_reg_override) a=faststore_reg_override;
3250       //gen_tlb_addr_w(temp,map);
3251       //emit_writebyte_indexed(tl,(int)rdram-0x80000000,temp);
3252       emit_writebyte_indexed_tlb(tl,x,a,map,a);
3253     }
3254     type=STOREB_STUB;
3255   }
3256   if (opcode[i]==0x29) { // SH
3257     if(!c||memtarget) {
3258       int x=0,a=temp;
3259 #ifdef BIG_ENDIAN_MIPS
3260       if(!c) emit_xorimm(addr,2,temp);
3261       else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
3262 #else
3263       if(!c) a=addr;
3264 #endif
3265       if(faststore_reg_override) a=faststore_reg_override;
3266       //#ifdef
3267       //emit_writehword_indexed_tlb(tl,x,temp,map,temp);
3268       //#else
3269       if(map>=0) {
3270         gen_tlb_addr_w(a,map);
3271         emit_writehword_indexed(tl,x,a);
3272       }else
3273         emit_writehword_indexed(tl,(int)rdram-0x80000000+x,a);
3274     }
3275     type=STOREH_STUB;
3276   }
3277   if (opcode[i]==0x2B) { // SW
3278     if(!c||memtarget) {
3279       int a=addr;
3280       if(faststore_reg_override) a=faststore_reg_override;
3281       //emit_writeword_indexed(tl,(int)rdram-0x80000000,addr);
3282       emit_writeword_indexed_tlb(tl,0,a,map,temp);
3283     }
3284     type=STOREW_STUB;
3285   }
3286   if (opcode[i]==0x3F) { // SD
3287     if(!c||memtarget) {
3288       int a=addr;
3289       if(faststore_reg_override) a=faststore_reg_override;
3290       if(rs2[i]) {
3291         assert(th>=0);
3292         //emit_writeword_indexed(th,(int)rdram-0x80000000,addr);
3293         //emit_writeword_indexed(tl,(int)rdram-0x7FFFFFFC,addr);
3294         emit_writedword_indexed_tlb(th,tl,0,a,map,temp);
3295       }else{
3296         // Store zero
3297         //emit_writeword_indexed(tl,(int)rdram-0x80000000,temp);
3298         //emit_writeword_indexed(tl,(int)rdram-0x7FFFFFFC,temp);
3299         emit_writedword_indexed_tlb(tl,tl,0,a,map,temp);
3300       }
3301     }
3302     type=STORED_STUB;
3303   }
3304 #ifdef PCSX
3305   if(jaddr) {
3306     // PCSX store handlers don't check invcode again
3307     reglist|=1<<addr;
3308     add_stub(type,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3309     jaddr=0;
3310   }
3311 #endif
3312   if(!using_tlb&&!(i_regs->waswritten&(1<<rs1[i]))&&!(new_dynarec_hacks&NDHACK_NO_SMC_CHECK)) {
3313     if(!c||memtarget) {
3314       #ifdef DESTRUCTIVE_SHIFT
3315       // The x86 shift operation is 'destructive'; it overwrites the
3316       // source register, so we need to make a copy first and use that.
3317       addr=temp;
3318       #endif
3319       #if defined(HOST_IMM8)
3320       int ir=get_reg(i_regs->regmap,INVCP);
3321       assert(ir>=0);
3322       emit_cmpmem_indexedsr12_reg(ir,addr,1);
3323       #else
3324       emit_cmpmem_indexedsr12_imm((int)invalid_code,addr,1);
3325       #endif
3326       #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT)
3327       emit_callne(invalidate_addr_reg[addr]);
3328       #else
3329       jaddr2=(int)out;
3330       emit_jne(0);
3331       add_stub(INVCODE_STUB,jaddr2,(int)out,reglist|(1<<HOST_CCREG),addr,0,0,0);
3332       #endif
3333     }
3334   }
3335   u_int addr_val=constmap[i][s]+offset;
3336   if(jaddr) {
3337     add_stub(type,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3338   } else if(c&&!memtarget) {
3339     inline_writestub(type,i,addr_val,i_regs->regmap,rs2[i],ccadj[i],reglist);
3340   }
3341   // basic current block modification detection..
3342   // not looking back as that should be in mips cache already
3343   if(c&&start+i*4<addr_val&&addr_val<start+slen*4) {
3344     printf("write to %08x hits block %08x, pc=%08x\n",addr_val,start,start+i*4);
3345     assert(i_regs->regmap==regs[i].regmap); // not delay slot
3346     if(i_regs->regmap==regs[i].regmap) {
3347       load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty,i);
3348       wb_dirtys(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty);
3349       emit_movimm(start+i*4+4,0);
3350       emit_writeword(0,(int)&pcaddr);
3351       emit_jmp((int)do_interrupt);
3352     }
3353   }
3354   //if(opcode[i]==0x2B || opcode[i]==0x3F)
3355   //if(opcode[i]==0x2B || opcode[i]==0x28)
3356   //if(opcode[i]==0x2B || opcode[i]==0x29)
3357   //if(opcode[i]==0x2B)
3358   /*if(opcode[i]==0x2B || opcode[i]==0x28 || opcode[i]==0x29 || opcode[i]==0x3F)
3359   {
3360     #ifdef __i386__
3361     emit_pusha();
3362     #endif
3363     #ifdef __arm__
3364     save_regs(0x100f);
3365     #endif
3366         emit_readword((int)&last_count,ECX);
3367         #ifdef __i386__
3368         if(get_reg(i_regs->regmap,CCREG)<0)
3369           emit_loadreg(CCREG,HOST_CCREG);
3370         emit_add(HOST_CCREG,ECX,HOST_CCREG);
3371         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
3372         emit_writeword(HOST_CCREG,(int)&Count);
3373         #endif
3374         #ifdef __arm__
3375         if(get_reg(i_regs->regmap,CCREG)<0)
3376           emit_loadreg(CCREG,0);
3377         else
3378           emit_mov(HOST_CCREG,0);
3379         emit_add(0,ECX,0);
3380         emit_addimm(0,2*ccadj[i],0);
3381         emit_writeword(0,(int)&Count);
3382         #endif
3383     emit_call((int)memdebug);
3384     #ifdef __i386__
3385     emit_popa();
3386     #endif
3387     #ifdef __arm__
3388     restore_regs(0x100f);
3389     #endif
3390   }/**/
3391 }
3392
3393 void storelr_assemble(int i,struct regstat *i_regs)
3394 {
3395   int s,th,tl;
3396   int temp;
3397   int temp2;
3398   int offset;
3399   int jaddr=0,jaddr2;
3400   int case1,case2,case3;
3401   int done0,done1,done2;
3402   int memtarget=0,c=0;
3403   int agr=AGEN1+(i&1);
3404   u_int hr,reglist=0;
3405   th=get_reg(i_regs->regmap,rs2[i]|64);
3406   tl=get_reg(i_regs->regmap,rs2[i]);
3407   s=get_reg(i_regs->regmap,rs1[i]);
3408   temp=get_reg(i_regs->regmap,agr);
3409   if(temp<0) temp=get_reg(i_regs->regmap,-1);
3410   offset=imm[i];
3411   if(s>=0) {
3412     c=(i_regs->isconst>>s)&1;
3413     if(c) {
3414       memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
3415       if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
3416     }
3417   }
3418   assert(tl>=0);
3419   for(hr=0;hr<HOST_REGS;hr++) {
3420     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3421   }
3422   assert(temp>=0);
3423   if(!using_tlb) {
3424     if(!c) {
3425       emit_cmpimm(s<0||offset?temp:s,RAM_SIZE);
3426       if(!offset&&s!=temp) emit_mov(s,temp);
3427       jaddr=(int)out;
3428       emit_jno(0);
3429     }
3430     else
3431     {
3432       if(!memtarget||!rs1[i]) {
3433         jaddr=(int)out;
3434         emit_jmp(0);
3435       }
3436     }
3437     #ifdef RAM_OFFSET
3438     int map=get_reg(i_regs->regmap,ROREG);
3439     if(map<0) emit_loadreg(ROREG,map=HOST_TEMPREG);
3440     gen_tlb_addr_w(temp,map);
3441     #else
3442     if((u_int)rdram!=0x80000000)
3443       emit_addimm_no_flags((u_int)rdram-(u_int)0x80000000,temp);
3444     #endif
3445   }else{ // using tlb
3446     int map=get_reg(i_regs->regmap,TLREG);
3447     assert(map>=0);
3448     reglist&=~(1<<map);
3449     map=do_tlb_w(c||s<0||offset?temp:s,temp,map,0,c,constmap[i][s]+offset);
3450     if(!c&&!offset&&s>=0) emit_mov(s,temp);
3451     do_tlb_w_branch(map,c,constmap[i][s]+offset,&jaddr);
3452     if(!jaddr&&!memtarget) {
3453       jaddr=(int)out;
3454       emit_jmp(0);
3455     }
3456     gen_tlb_addr_w(temp,map);
3457   }
3458
3459   if (opcode[i]==0x2C||opcode[i]==0x2D) { // SDL/SDR
3460     temp2=get_reg(i_regs->regmap,FTEMP);
3461     if(!rs2[i]) temp2=th=tl;
3462   }
3463
3464 #ifndef BIG_ENDIAN_MIPS
3465     emit_xorimm(temp,3,temp);
3466 #endif
3467   emit_testimm(temp,2);
3468   case2=(int)out;
3469   emit_jne(0);
3470   emit_testimm(temp,1);
3471   case1=(int)out;
3472   emit_jne(0);
3473   // 0
3474   if (opcode[i]==0x2A) { // SWL
3475     emit_writeword_indexed(tl,0,temp);
3476   }
3477   if (opcode[i]==0x2E) { // SWR
3478     emit_writebyte_indexed(tl,3,temp);
3479   }
3480   if (opcode[i]==0x2C) { // SDL
3481     emit_writeword_indexed(th,0,temp);
3482     if(rs2[i]) emit_mov(tl,temp2);
3483   }
3484   if (opcode[i]==0x2D) { // SDR
3485     emit_writebyte_indexed(tl,3,temp);
3486     if(rs2[i]) emit_shldimm(th,tl,24,temp2);
3487   }
3488   done0=(int)out;
3489   emit_jmp(0);
3490   // 1
3491   set_jump_target(case1,(int)out);
3492   if (opcode[i]==0x2A) { // SWL
3493     // Write 3 msb into three least significant bytes
3494     if(rs2[i]) emit_rorimm(tl,8,tl);
3495     emit_writehword_indexed(tl,-1,temp);
3496     if(rs2[i]) emit_rorimm(tl,16,tl);
3497     emit_writebyte_indexed(tl,1,temp);
3498     if(rs2[i]) emit_rorimm(tl,8,tl);
3499   }
3500   if (opcode[i]==0x2E) { // SWR
3501     // Write two lsb into two most significant bytes
3502     emit_writehword_indexed(tl,1,temp);
3503   }
3504   if (opcode[i]==0x2C) { // SDL
3505     if(rs2[i]) emit_shrdimm(tl,th,8,temp2);
3506     // Write 3 msb into three least significant bytes
3507     if(rs2[i]) emit_rorimm(th,8,th);
3508     emit_writehword_indexed(th,-1,temp);
3509     if(rs2[i]) emit_rorimm(th,16,th);
3510     emit_writebyte_indexed(th,1,temp);
3511     if(rs2[i]) emit_rorimm(th,8,th);
3512   }
3513   if (opcode[i]==0x2D) { // SDR
3514     if(rs2[i]) emit_shldimm(th,tl,16,temp2);
3515     // Write two lsb into two most significant bytes
3516     emit_writehword_indexed(tl,1,temp);
3517   }
3518   done1=(int)out;
3519   emit_jmp(0);
3520   // 2
3521   set_jump_target(case2,(int)out);
3522   emit_testimm(temp,1);
3523   case3=(int)out;
3524   emit_jne(0);
3525   if (opcode[i]==0x2A) { // SWL
3526     // Write two msb into two least significant bytes
3527     if(rs2[i]) emit_rorimm(tl,16,tl);
3528     emit_writehword_indexed(tl,-2,temp);
3529     if(rs2[i]) emit_rorimm(tl,16,tl);
3530   }
3531   if (opcode[i]==0x2E) { // SWR
3532     // Write 3 lsb into three most significant bytes
3533     emit_writebyte_indexed(tl,-1,temp);
3534     if(rs2[i]) emit_rorimm(tl,8,tl);
3535     emit_writehword_indexed(tl,0,temp);
3536     if(rs2[i]) emit_rorimm(tl,24,tl);
3537   }
3538   if (opcode[i]==0x2C) { // SDL
3539     if(rs2[i]) emit_shrdimm(tl,th,16,temp2);
3540     // Write two msb into two least significant bytes
3541     if(rs2[i]) emit_rorimm(th,16,th);
3542     emit_writehword_indexed(th,-2,temp);
3543     if(rs2[i]) emit_rorimm(th,16,th);
3544   }
3545   if (opcode[i]==0x2D) { // SDR
3546     if(rs2[i]) emit_shldimm(th,tl,8,temp2);
3547     // Write 3 lsb into three most significant bytes
3548     emit_writebyte_indexed(tl,-1,temp);
3549     if(rs2[i]) emit_rorimm(tl,8,tl);
3550     emit_writehword_indexed(tl,0,temp);
3551     if(rs2[i]) emit_rorimm(tl,24,tl);
3552   }
3553   done2=(int)out;
3554   emit_jmp(0);
3555   // 3
3556   set_jump_target(case3,(int)out);
3557   if (opcode[i]==0x2A) { // SWL
3558     // Write msb into least significant byte
3559     if(rs2[i]) emit_rorimm(tl,24,tl);
3560     emit_writebyte_indexed(tl,-3,temp);
3561     if(rs2[i]) emit_rorimm(tl,8,tl);
3562   }
3563   if (opcode[i]==0x2E) { // SWR
3564     // Write entire word
3565     emit_writeword_indexed(tl,-3,temp);
3566   }
3567   if (opcode[i]==0x2C) { // SDL
3568     if(rs2[i]) emit_shrdimm(tl,th,24,temp2);
3569     // Write msb into least significant byte
3570     if(rs2[i]) emit_rorimm(th,24,th);
3571     emit_writebyte_indexed(th,-3,temp);
3572     if(rs2[i]) emit_rorimm(th,8,th);
3573   }
3574   if (opcode[i]==0x2D) { // SDR
3575     if(rs2[i]) emit_mov(th,temp2);
3576     // Write entire word
3577     emit_writeword_indexed(tl,-3,temp);
3578   }
3579   set_jump_target(done0,(int)out);
3580   set_jump_target(done1,(int)out);
3581   set_jump_target(done2,(int)out);
3582   if (opcode[i]==0x2C) { // SDL
3583     emit_testimm(temp,4);
3584     done0=(int)out;
3585     emit_jne(0);
3586     emit_andimm(temp,~3,temp);
3587     emit_writeword_indexed(temp2,4,temp);
3588     set_jump_target(done0,(int)out);
3589   }
3590   if (opcode[i]==0x2D) { // SDR
3591     emit_testimm(temp,4);
3592     done0=(int)out;
3593     emit_jeq(0);
3594     emit_andimm(temp,~3,temp);
3595     emit_writeword_indexed(temp2,-4,temp);
3596     set_jump_target(done0,(int)out);
3597   }
3598   if(!c||!memtarget)
3599     add_stub(STORELR_STUB,jaddr,(int)out,i,(int)i_regs,temp,ccadj[i],reglist);
3600   if(!using_tlb&&!(i_regs->waswritten&(1<<rs1[i]))&&!(new_dynarec_hacks&NDHACK_NO_SMC_CHECK)) {
3601     #ifdef RAM_OFFSET
3602     int map=get_reg(i_regs->regmap,ROREG);
3603     if(map<0) map=HOST_TEMPREG;
3604     gen_orig_addr_w(temp,map);
3605     #else
3606     emit_addimm_no_flags((u_int)0x80000000-(u_int)rdram,temp);
3607     #endif
3608     #if defined(HOST_IMM8)
3609     int ir=get_reg(i_regs->regmap,INVCP);
3610     assert(ir>=0);
3611     emit_cmpmem_indexedsr12_reg(ir,temp,1);
3612     #else
3613     emit_cmpmem_indexedsr12_imm((int)invalid_code,temp,1);
3614     #endif
3615     #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT)
3616     emit_callne(invalidate_addr_reg[temp]);
3617     #else
3618     jaddr2=(int)out;
3619     emit_jne(0);
3620     add_stub(INVCODE_STUB,jaddr2,(int)out,reglist|(1<<HOST_CCREG),temp,0,0,0);
3621     #endif
3622   }
3623   /*
3624     emit_pusha();
3625     //save_regs(0x100f);
3626         emit_readword((int)&last_count,ECX);
3627         if(get_reg(i_regs->regmap,CCREG)<0)
3628           emit_loadreg(CCREG,HOST_CCREG);
3629         emit_add(HOST_CCREG,ECX,HOST_CCREG);
3630         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
3631         emit_writeword(HOST_CCREG,(int)&Count);
3632     emit_call((int)memdebug);
3633     emit_popa();
3634     //restore_regs(0x100f);
3635   /**/
3636 }
3637
3638 void c1ls_assemble(int i,struct regstat *i_regs)
3639 {
3640 #ifndef DISABLE_COP1
3641   int s,th,tl;
3642   int temp,ar;
3643   int map=-1;
3644   int offset;
3645   int c=0;
3646   int jaddr,jaddr2=0,jaddr3,type;
3647   int agr=AGEN1+(i&1);
3648   u_int hr,reglist=0;
3649   th=get_reg(i_regs->regmap,FTEMP|64);
3650   tl=get_reg(i_regs->regmap,FTEMP);
3651   s=get_reg(i_regs->regmap,rs1[i]);
3652   temp=get_reg(i_regs->regmap,agr);
3653   if(temp<0) temp=get_reg(i_regs->regmap,-1);
3654   offset=imm[i];
3655   assert(tl>=0);
3656   assert(rs1[i]>0);
3657   assert(temp>=0);
3658   for(hr=0;hr<HOST_REGS;hr++) {
3659     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3660   }
3661   if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG);
3662   if (opcode[i]==0x31||opcode[i]==0x35) // LWC1/LDC1
3663   {
3664     // Loads use a temporary register which we need to save
3665     reglist|=1<<temp;
3666   }
3667   if (opcode[i]==0x39||opcode[i]==0x3D) // SWC1/SDC1
3668     ar=temp;
3669   else // LWC1/LDC1
3670     ar=tl;
3671   //if(s<0) emit_loadreg(rs1[i],ar); //address_generation does this now
3672   //else c=(i_regs->wasconst>>s)&1;
3673   if(s>=0) c=(i_regs->wasconst>>s)&1;
3674   // Check cop1 unusable
3675   if(!cop1_usable) {
3676     signed char rs=get_reg(i_regs->regmap,CSREG);
3677     assert(rs>=0);
3678     emit_testimm(rs,0x20000000);
3679     jaddr=(int)out;
3680     emit_jeq(0);
3681     add_stub(FP_STUB,jaddr,(int)out,i,rs,(int)i_regs,is_delayslot,0);
3682     cop1_usable=1;
3683   }
3684   if (opcode[i]==0x39) { // SWC1 (get float address)
3685     emit_readword((int)&reg_cop1_simple[(source[i]>>16)&0x1f],tl);
3686   }
3687   if (opcode[i]==0x3D) { // SDC1 (get double address)
3688     emit_readword((int)&reg_cop1_double[(source[i]>>16)&0x1f],tl);
3689   }
3690   // Generate address + offset
3691   if(!using_tlb) {
3692     if(!c)
3693       emit_cmpimm(offset||c||s<0?ar:s,RAM_SIZE);
3694   }
3695   else
3696   {
3697     map=get_reg(i_regs->regmap,TLREG);
3698     assert(map>=0);
3699     reglist&=~(1<<map);
3700     if (opcode[i]==0x31||opcode[i]==0x35) { // LWC1/LDC1
3701       map=do_tlb_r(offset||c||s<0?ar:s,ar,map,0,-1,-1,c,constmap[i][s]+offset);
3702     }
3703     if (opcode[i]==0x39||opcode[i]==0x3D) { // SWC1/SDC1
3704       map=do_tlb_w(offset||c||s<0?ar:s,ar,map,0,c,constmap[i][s]+offset);
3705     }
3706   }
3707   if (opcode[i]==0x39) { // SWC1 (read float)
3708     emit_readword_indexed(0,tl,tl);
3709   }
3710   if (opcode[i]==0x3D) { // SDC1 (read double)
3711     emit_readword_indexed(4,tl,th);
3712     emit_readword_indexed(0,tl,tl);
3713   }
3714   if (opcode[i]==0x31) { // LWC1 (get target address)
3715     emit_readword((int)&reg_cop1_simple[(source[i]>>16)&0x1f],temp);
3716   }
3717   if (opcode[i]==0x35) { // LDC1 (get target address)
3718     emit_readword((int)&reg_cop1_double[(source[i]>>16)&0x1f],temp);
3719   }
3720   if(!using_tlb) {
3721     if(!c) {
3722       jaddr2=(int)out;
3723       emit_jno(0);
3724     }
3725     else if(((signed int)(constmap[i][s]+offset))>=(signed int)0x80000000+RAM_SIZE) {
3726       jaddr2=(int)out;
3727       emit_jmp(0); // inline_readstub/inline_writestub?  Very rare case
3728     }
3729     #ifdef DESTRUCTIVE_SHIFT
3730     if (opcode[i]==0x39||opcode[i]==0x3D) { // SWC1/SDC1
3731       if(!offset&&!c&&s>=0) emit_mov(s,ar);
3732     }
3733     #endif
3734   }else{
3735     if (opcode[i]==0x31||opcode[i]==0x35) { // LWC1/LDC1
3736       do_tlb_r_branch(map,c,constmap[i][s]+offset,&jaddr2);
3737     }
3738     if (opcode[i]==0x39||opcode[i]==0x3D) { // SWC1/SDC1
3739       do_tlb_w_branch(map,c,constmap[i][s]+offset,&jaddr2);
3740     }
3741   }
3742   if (opcode[i]==0x31) { // LWC1
3743     //if(s>=0&&!c&&!offset) emit_mov(s,tl);
3744     //gen_tlb_addr_r(ar,map);
3745     //emit_readword_indexed((int)rdram-0x80000000,tl,tl);
3746     #ifdef HOST_IMM_ADDR32
3747     if(c) emit_readword_tlb(constmap[i][s]+offset,map,tl);
3748     else
3749     #endif
3750     emit_readword_indexed_tlb(0,offset||c||s<0?tl:s,map,tl);
3751     type=LOADW_STUB;
3752   }
3753   if (opcode[i]==0x35) { // LDC1
3754     assert(th>=0);
3755     //if(s>=0&&!c&&!offset) emit_mov(s,tl);
3756     //gen_tlb_addr_r(ar,map);
3757     //emit_readword_indexed((int)rdram-0x80000000,tl,th);
3758     //emit_readword_indexed((int)rdram-0x7FFFFFFC,tl,tl);
3759     #ifdef HOST_IMM_ADDR32
3760     if(c) emit_readdword_tlb(constmap[i][s]+offset,map,th,tl);
3761     else
3762     #endif
3763     emit_readdword_indexed_tlb(0,offset||c||s<0?tl:s,map,th,tl);
3764     type=LOADD_STUB;
3765   }
3766   if (opcode[i]==0x39) { // SWC1
3767     //emit_writeword_indexed(tl,(int)rdram-0x80000000,temp);
3768     emit_writeword_indexed_tlb(tl,0,offset||c||s<0?temp:s,map,temp);
3769     type=STOREW_STUB;
3770   }
3771   if (opcode[i]==0x3D) { // SDC1
3772     assert(th>=0);
3773     //emit_writeword_indexed(th,(int)rdram-0x80000000,temp);
3774     //emit_writeword_indexed(tl,(int)rdram-0x7FFFFFFC,temp);
3775     emit_writedword_indexed_tlb(th,tl,0,offset||c||s<0?temp:s,map,temp);
3776     type=STORED_STUB;
3777   }
3778   if(!using_tlb&&!(i_regs->waswritten&(1<<rs1[i]))&&!(new_dynarec_hacks&NDHACK_NO_SMC_CHECK)) {
3779     if (opcode[i]==0x39||opcode[i]==0x3D) { // SWC1/SDC1
3780       #ifndef DESTRUCTIVE_SHIFT
3781       temp=offset||c||s<0?ar:s;
3782       #endif
3783       #if defined(HOST_IMM8)
3784       int ir=get_reg(i_regs->regmap,INVCP);
3785       assert(ir>=0);
3786       emit_cmpmem_indexedsr12_reg(ir,temp,1);
3787       #else
3788       emit_cmpmem_indexedsr12_imm((int)invalid_code,temp,1);
3789       #endif
3790       #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT)
3791       emit_callne(invalidate_addr_reg[temp]);
3792       #else
3793       jaddr3=(int)out;
3794       emit_jne(0);
3795       add_stub(INVCODE_STUB,jaddr3,(int)out,reglist|(1<<HOST_CCREG),temp,0,0,0);
3796       #endif
3797     }
3798   }
3799   if(jaddr2) add_stub(type,jaddr2,(int)out,i,offset||c||s<0?ar:s,(int)i_regs,ccadj[i],reglist);
3800   if (opcode[i]==0x31) { // LWC1 (write float)
3801     emit_writeword_indexed(tl,0,temp);
3802   }
3803   if (opcode[i]==0x35) { // LDC1 (write double)
3804     emit_writeword_indexed(th,4,temp);
3805     emit_writeword_indexed(tl,0,temp);
3806   }
3807   //if(opcode[i]==0x39)
3808   /*if(opcode[i]==0x39||opcode[i]==0x31)
3809   {
3810     emit_pusha();
3811         emit_readword((int)&last_count,ECX);
3812         if(get_reg(i_regs->regmap,CCREG)<0)
3813           emit_loadreg(CCREG,HOST_CCREG);
3814         emit_add(HOST_CCREG,ECX,HOST_CCREG);
3815         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
3816         emit_writeword(HOST_CCREG,(int)&Count);
3817     emit_call((int)memdebug);
3818     emit_popa();
3819   }/**/
3820 #else
3821   cop1_unusable(i, i_regs);
3822 #endif
3823 }
3824
3825 void c2ls_assemble(int i,struct regstat *i_regs)
3826 {
3827   int s,tl;
3828   int ar;
3829   int offset;
3830   int memtarget=0,c=0;
3831   int jaddr2=0,jaddr3,type;
3832   int agr=AGEN1+(i&1);
3833   int fastio_reg_override=0;
3834   u_int hr,reglist=0;
3835   u_int copr=(source[i]>>16)&0x1f;
3836   s=get_reg(i_regs->regmap,rs1[i]);
3837   tl=get_reg(i_regs->regmap,FTEMP);
3838   offset=imm[i];
3839   assert(rs1[i]>0);
3840   assert(tl>=0);
3841   assert(!using_tlb);
3842
3843   for(hr=0;hr<HOST_REGS;hr++) {
3844     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3845   }
3846   if(i_regs->regmap[HOST_CCREG]==CCREG)
3847     reglist&=~(1<<HOST_CCREG);
3848
3849   // get the address
3850   if (opcode[i]==0x3a) { // SWC2
3851     ar=get_reg(i_regs->regmap,agr);
3852     if(ar<0) ar=get_reg(i_regs->regmap,-1);
3853     reglist|=1<<ar;
3854   } else { // LWC2
3855     ar=tl;
3856   }
3857   if(s>=0) c=(i_regs->wasconst>>s)&1;
3858   memtarget=c&&(((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE);
3859   if (!offset&&!c&&s>=0) ar=s;
3860   assert(ar>=0);
3861
3862   if (opcode[i]==0x3a) { // SWC2
3863     cop2_get_dreg(copr,tl,HOST_TEMPREG);
3864     type=STOREW_STUB;
3865   }
3866   else
3867     type=LOADW_STUB;
3868
3869   if(c&&!memtarget) {
3870     jaddr2=(int)out;
3871     emit_jmp(0); // inline_readstub/inline_writestub?
3872   }
3873   else {
3874     if(!c) {
3875       jaddr2=emit_fastpath_cmp_jump(i,ar,&fastio_reg_override);
3876     }
3877     if (opcode[i]==0x32) { // LWC2
3878       #ifdef HOST_IMM_ADDR32
3879       if(c) emit_readword_tlb(constmap[i][s]+offset,-1,tl);
3880       else
3881       #endif
3882       int a=ar;
3883       if(fastio_reg_override) a=fastio_reg_override;
3884       emit_readword_indexed(0,a,tl);
3885     }
3886     if (opcode[i]==0x3a) { // SWC2
3887       #ifdef DESTRUCTIVE_SHIFT
3888       if(!offset&&!c&&s>=0) emit_mov(s,ar);
3889       #endif
3890       int a=ar;
3891       if(fastio_reg_override) a=fastio_reg_override;
3892       emit_writeword_indexed(tl,0,a);
3893     }
3894   }
3895   if(jaddr2)
3896     add_stub(type,jaddr2,(int)out,i,ar,(int)i_regs,ccadj[i],reglist);
3897   if(opcode[i]==0x3a) // SWC2
3898   if(!(i_regs->waswritten&(1<<rs1[i]))&&!(new_dynarec_hacks&NDHACK_NO_SMC_CHECK)) {
3899 #if defined(HOST_IMM8)
3900     int ir=get_reg(i_regs->regmap,INVCP);
3901     assert(ir>=0);
3902     emit_cmpmem_indexedsr12_reg(ir,ar,1);
3903 #else
3904     emit_cmpmem_indexedsr12_imm((int)invalid_code,ar,1);
3905 #endif
3906     #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT)
3907     emit_callne(invalidate_addr_reg[ar]);
3908     #else
3909     jaddr3=(int)out;
3910     emit_jne(0);
3911     add_stub(INVCODE_STUB,jaddr3,(int)out,reglist|(1<<HOST_CCREG),ar,0,0,0);
3912     #endif
3913   }
3914   if (opcode[i]==0x32) { // LWC2
3915     cop2_put_dreg(copr,tl,HOST_TEMPREG);
3916   }
3917 }
3918
3919 #ifndef multdiv_assemble
3920 void multdiv_assemble(int i,struct regstat *i_regs)
3921 {
3922   printf("Need multdiv_assemble for this architecture.\n");
3923   exit(1);
3924 }
3925 #endif
3926
3927 void mov_assemble(int i,struct regstat *i_regs)
3928 {
3929   //if(opcode2[i]==0x10||opcode2[i]==0x12) { // MFHI/MFLO
3930   //if(opcode2[i]==0x11||opcode2[i]==0x13) { // MTHI/MTLO
3931   if(rt1[i]) {
3932     signed char sh,sl,th,tl;
3933     th=get_reg(i_regs->regmap,rt1[i]|64);
3934     tl=get_reg(i_regs->regmap,rt1[i]);
3935     //assert(tl>=0);
3936     if(tl>=0) {
3937       sh=get_reg(i_regs->regmap,rs1[i]|64);
3938       sl=get_reg(i_regs->regmap,rs1[i]);
3939       if(sl>=0) emit_mov(sl,tl);
3940       else emit_loadreg(rs1[i],tl);
3941       if(th>=0) {
3942         if(sh>=0) emit_mov(sh,th);
3943         else emit_loadreg(rs1[i]|64,th);
3944       }
3945     }
3946   }
3947 }
3948
3949 #ifndef fconv_assemble
3950 void fconv_assemble(int i,struct regstat *i_regs)
3951 {
3952   printf("Need fconv_assemble for this architecture.\n");
3953   exit(1);
3954 }
3955 #endif
3956
3957 #if 0
3958 void float_assemble(int i,struct regstat *i_regs)
3959 {
3960   printf("Need float_assemble for this architecture.\n");
3961   exit(1);
3962 }
3963 #endif
3964
3965 void syscall_assemble(int i,struct regstat *i_regs)
3966 {
3967   signed char ccreg=get_reg(i_regs->regmap,CCREG);
3968   assert(ccreg==HOST_CCREG);
3969   assert(!is_delayslot);
3970   emit_movimm(start+i*4,EAX); // Get PC
3971   emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i]),HOST_CCREG); // CHECK: is this right?  There should probably be an extra cycle...
3972   emit_jmp((int)jump_syscall_hle); // XXX
3973 }
3974
3975 void hlecall_assemble(int i,struct regstat *i_regs)
3976 {
3977   signed char ccreg=get_reg(i_regs->regmap,CCREG);
3978   assert(ccreg==HOST_CCREG);
3979   assert(!is_delayslot);
3980   emit_movimm(start+i*4+4,0); // Get PC
3981   emit_movimm((int)psxHLEt[source[i]&7],1);
3982   emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i]),HOST_CCREG); // XXX
3983   emit_jmp((int)jump_hlecall);
3984 }
3985
3986 void intcall_assemble(int i,struct regstat *i_regs)
3987 {
3988   signed char ccreg=get_reg(i_regs->regmap,CCREG);
3989   assert(ccreg==HOST_CCREG);
3990   assert(!is_delayslot);
3991   emit_movimm(start+i*4,0); // Get PC
3992   emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i]),HOST_CCREG);
3993   emit_jmp((int)jump_intcall);
3994 }
3995
3996 void ds_assemble(int i,struct regstat *i_regs)
3997 {
3998   speculate_register_values(i);
3999   is_delayslot=1;
4000   switch(itype[i]) {
4001     case ALU:
4002       alu_assemble(i,i_regs);break;
4003     case IMM16:
4004       imm16_assemble(i,i_regs);break;
4005     case SHIFT:
4006       shift_assemble(i,i_regs);break;
4007     case SHIFTIMM:
4008       shiftimm_assemble(i,i_regs);break;
4009     case LOAD:
4010       load_assemble(i,i_regs);break;
4011     case LOADLR:
4012       loadlr_assemble(i,i_regs);break;
4013     case STORE:
4014       store_assemble(i,i_regs);break;
4015     case STORELR:
4016       storelr_assemble(i,i_regs);break;
4017     case COP0:
4018       cop0_assemble(i,i_regs);break;
4019     case COP1:
4020       cop1_assemble(i,i_regs);break;
4021     case C1LS:
4022       c1ls_assemble(i,i_regs);break;
4023     case COP2:
4024       cop2_assemble(i,i_regs);break;
4025     case C2LS:
4026       c2ls_assemble(i,i_regs);break;
4027     case C2OP:
4028       c2op_assemble(i,i_regs);break;
4029     case FCONV:
4030       fconv_assemble(i,i_regs);break;
4031     case FLOAT:
4032       float_assemble(i,i_regs);break;
4033     case FCOMP:
4034       fcomp_assemble(i,i_regs);break;
4035     case MULTDIV:
4036       multdiv_assemble(i,i_regs);break;
4037     case MOV:
4038       mov_assemble(i,i_regs);break;
4039     case SYSCALL:
4040     case HLECALL:
4041     case INTCALL:
4042     case SPAN:
4043     case UJUMP:
4044     case RJUMP:
4045     case CJUMP:
4046     case SJUMP:
4047     case FJUMP:
4048       printf("Jump in the delay slot.  This is probably a bug.\n");
4049   }
4050   is_delayslot=0;
4051 }
4052
4053 // Is the branch target a valid internal jump?
4054 int internal_branch(uint64_t i_is32,int addr)
4055 {
4056   if(addr&1) return 0; // Indirect (register) jump
4057   if(addr>=start && addr<start+slen*4-4)
4058   {
4059     int t=(addr-start)>>2;
4060     // Delay slots are not valid branch targets
4061     //if(t>0&&(itype[t-1]==RJUMP||itype[t-1]==UJUMP||itype[t-1]==CJUMP||itype[t-1]==SJUMP||itype[t-1]==FJUMP)) return 0;
4062     // 64 -> 32 bit transition requires a recompile
4063     /*if(is32[t]&~unneeded_reg_upper[t]&~i_is32)
4064     {
4065       if(requires_32bit[t]&~i_is32) printf("optimizable: no\n");
4066       else printf("optimizable: yes\n");
4067     }*/
4068     //if(is32[t]&~unneeded_reg_upper[t]&~i_is32) return 0;
4069 #ifndef FORCE32
4070     if(requires_32bit[t]&~i_is32) return 0;
4071     else
4072 #endif
4073       return 1;
4074   }
4075   return 0;
4076 }
4077
4078 #ifndef wb_invalidate
4079 void wb_invalidate(signed char pre[],signed char entry[],uint64_t dirty,uint64_t is32,
4080   uint64_t u,uint64_t uu)
4081 {
4082   int hr;
4083   for(hr=0;hr<HOST_REGS;hr++) {
4084     if(hr!=EXCLUDE_REG) {
4085       if(pre[hr]!=entry[hr]) {
4086         if(pre[hr]>=0) {
4087           if((dirty>>hr)&1) {
4088             if(get_reg(entry,pre[hr])<0) {
4089               if(pre[hr]<64) {
4090                 if(!((u>>pre[hr])&1)) {
4091                   emit_storereg(pre[hr],hr);
4092                   if( ((is32>>pre[hr])&1) && !((uu>>pre[hr])&1) ) {
4093                     emit_sarimm(hr,31,hr);
4094                     emit_storereg(pre[hr]|64,hr);
4095                   }
4096                 }
4097               }else{
4098                 if(!((uu>>(pre[hr]&63))&1) && !((is32>>(pre[hr]&63))&1)) {
4099                   emit_storereg(pre[hr],hr);
4100                 }
4101               }
4102             }
4103           }
4104         }
4105       }
4106     }
4107   }
4108   // Move from one register to another (no writeback)
4109   for(hr=0;hr<HOST_REGS;hr++) {
4110     if(hr!=EXCLUDE_REG) {
4111       if(pre[hr]!=entry[hr]) {
4112         if(pre[hr]>=0&&(pre[hr]&63)<TEMPREG) {
4113           int nr;
4114           if((nr=get_reg(entry,pre[hr]))>=0) {
4115             emit_mov(hr,nr);
4116           }
4117         }
4118       }
4119     }
4120   }
4121 }
4122 #endif
4123
4124 // Load the specified registers
4125 // This only loads the registers given as arguments because
4126 // we don't want to load things that will be overwritten
4127 void load_regs(signed char entry[],signed char regmap[],int is32,int rs1,int rs2)
4128 {
4129   int hr;
4130   // Load 32-bit regs
4131   for(hr=0;hr<HOST_REGS;hr++) {
4132     if(hr!=EXCLUDE_REG&&regmap[hr]>=0) {
4133       if(entry[hr]!=regmap[hr]) {
4134         if(regmap[hr]==rs1||regmap[hr]==rs2)
4135         {
4136           if(regmap[hr]==0) {
4137             emit_zeroreg(hr);
4138           }
4139           else
4140           {
4141             emit_loadreg(regmap[hr],hr);
4142           }
4143         }
4144       }
4145     }
4146   }
4147   //Load 64-bit regs
4148   for(hr=0;hr<HOST_REGS;hr++) {
4149     if(hr!=EXCLUDE_REG&&regmap[hr]>=0) {
4150       if(entry[hr]!=regmap[hr]) {
4151         if(regmap[hr]-64==rs1||regmap[hr]-64==rs2)
4152         {
4153           assert(regmap[hr]!=64);
4154           if((is32>>(regmap[hr]&63))&1) {
4155             int lr=get_reg(regmap,regmap[hr]-64);
4156             if(lr>=0)
4157               emit_sarimm(lr,31,hr);
4158             else
4159               emit_loadreg(regmap[hr],hr);
4160           }
4161           else
4162           {
4163             emit_loadreg(regmap[hr],hr);
4164           }
4165         }
4166       }
4167     }
4168   }
4169 }
4170
4171 // Load registers prior to the start of a loop
4172 // so that they are not loaded within the loop
4173 static void loop_preload(signed char pre[],signed char entry[])
4174 {
4175   int hr;
4176   for(hr=0;hr<HOST_REGS;hr++) {
4177     if(hr!=EXCLUDE_REG) {
4178       if(pre[hr]!=entry[hr]) {
4179         if(entry[hr]>=0) {
4180           if(get_reg(pre,entry[hr])<0) {
4181             assem_debug("loop preload:\n");
4182             //printf("loop preload: %d\n",hr);
4183             if(entry[hr]==0) {
4184               emit_zeroreg(hr);
4185             }
4186             else if(entry[hr]<TEMPREG)
4187             {
4188               emit_loadreg(entry[hr],hr);
4189             }
4190             else if(entry[hr]-64<TEMPREG)
4191             {
4192               emit_loadreg(entry[hr],hr);
4193             }
4194           }
4195         }
4196       }
4197     }
4198   }
4199 }
4200
4201 // Generate address for load/store instruction
4202 // goes to AGEN for writes, FTEMP for LOADLR and cop1/2 loads
4203 void address_generation(int i,struct regstat *i_regs,signed char entry[])
4204 {
4205   if(itype[i]==LOAD||itype[i]==LOADLR||itype[i]==STORE||itype[i]==STORELR||itype[i]==C1LS||itype[i]==C2LS) {
4206     int ra=-1;
4207     int agr=AGEN1+(i&1);
4208     int mgr=MGEN1+(i&1);
4209     if(itype[i]==LOAD) {
4210       ra=get_reg(i_regs->regmap,rt1[i]);
4211       if(ra<0) ra=get_reg(i_regs->regmap,-1);
4212       assert(ra>=0);
4213     }
4214     if(itype[i]==LOADLR) {
4215       ra=get_reg(i_regs->regmap,FTEMP);
4216     }
4217     if(itype[i]==STORE||itype[i]==STORELR) {
4218       ra=get_reg(i_regs->regmap,agr);
4219       if(ra<0) ra=get_reg(i_regs->regmap,-1);
4220     }
4221     if(itype[i]==C1LS||itype[i]==C2LS) {
4222       if ((opcode[i]&0x3b)==0x31||(opcode[i]&0x3b)==0x32) // LWC1/LDC1/LWC2/LDC2
4223         ra=get_reg(i_regs->regmap,FTEMP);
4224       else { // SWC1/SDC1/SWC2/SDC2
4225         ra=get_reg(i_regs->regmap,agr);
4226         if(ra<0) ra=get_reg(i_regs->regmap,-1);
4227       }
4228     }
4229     int rs=get_reg(i_regs->regmap,rs1[i]);
4230     int rm=get_reg(i_regs->regmap,TLREG);
4231     if(ra>=0) {
4232       int offset=imm[i];
4233       int c=(i_regs->wasconst>>rs)&1;
4234       if(rs1[i]==0) {
4235         // Using r0 as a base address
4236         /*if(rm>=0) {
4237           if(!entry||entry[rm]!=mgr) {
4238             generate_map_const(offset,rm);
4239           } // else did it in the previous cycle
4240         }*/
4241         if(!entry||entry[ra]!=agr) {
4242           if (opcode[i]==0x22||opcode[i]==0x26) {
4243             emit_movimm(offset&0xFFFFFFFC,ra); // LWL/LWR
4244           }else if (opcode[i]==0x1a||opcode[i]==0x1b) {
4245             emit_movimm(offset&0xFFFFFFF8,ra); // LDL/LDR
4246           }else{
4247             emit_movimm(offset,ra);
4248           }
4249         } // else did it in the previous cycle
4250       }
4251       else if(rs<0) {
4252         if(!entry||entry[ra]!=rs1[i])
4253           emit_loadreg(rs1[i],ra);
4254         //if(!entry||entry[ra]!=rs1[i])
4255         //  printf("poor load scheduling!\n");
4256       }
4257       else if(c) {
4258 #ifndef DISABLE_TLB
4259         if(rm>=0) {
4260           if(!entry||entry[rm]!=mgr) {
4261             if(itype[i]==STORE||itype[i]==STORELR||(opcode[i]&0x3b)==0x39||(opcode[i]&0x3b)==0x3a) {
4262               // Stores to memory go thru the mapper to detect self-modifying
4263               // code, loads don't.
4264               if((unsigned int)(constmap[i][rs]+offset)>=0xC0000000 ||
4265                  (unsigned int)(constmap[i][rs]+offset)<0x80000000+RAM_SIZE )
4266                 generate_map_const(constmap[i][rs]+offset,rm);
4267             }else{
4268               if((signed int)(constmap[i][rs]+offset)>=(signed int)0xC0000000)
4269                 generate_map_const(constmap[i][rs]+offset,rm);
4270             }
4271           }
4272         }
4273 #endif
4274         if(rs1[i]!=rt1[i]||itype[i]!=LOAD) {
4275           if(!entry||entry[ra]!=agr) {
4276             if (opcode[i]==0x22||opcode[i]==0x26) {
4277               emit_movimm((constmap[i][rs]+offset)&0xFFFFFFFC,ra); // LWL/LWR
4278             }else if (opcode[i]==0x1a||opcode[i]==0x1b) {
4279               emit_movimm((constmap[i][rs]+offset)&0xFFFFFFF8,ra); // LDL/LDR
4280             }else{
4281               #ifdef HOST_IMM_ADDR32
4282               if((itype[i]!=LOAD&&(opcode[i]&0x3b)!=0x31&&(opcode[i]&0x3b)!=0x32) || // LWC1/LDC1/LWC2/LDC2
4283                  (using_tlb&&((signed int)constmap[i][rs]+offset)>=(signed int)0xC0000000))
4284               #endif
4285               emit_movimm(constmap[i][rs]+offset,ra);
4286               regs[i].loadedconst|=1<<ra;
4287             }
4288           } // else did it in the previous cycle
4289         } // else load_consts already did it
4290       }
4291       if(offset&&!c&&rs1[i]) {
4292         if(rs>=0) {
4293           emit_addimm(rs,offset,ra);
4294         }else{
4295           emit_addimm(ra,offset,ra);
4296         }
4297       }
4298     }
4299   }
4300   // Preload constants for next instruction
4301   if(itype[i+1]==LOAD||itype[i+1]==LOADLR||itype[i+1]==STORE||itype[i+1]==STORELR||itype[i+1]==C1LS||itype[i+1]==C2LS) {
4302     int agr,ra;
4303     #if !defined(HOST_IMM_ADDR32) && !defined(DISABLE_TLB)
4304     // Mapper entry
4305     agr=MGEN1+((i+1)&1);
4306     ra=get_reg(i_regs->regmap,agr);
4307     if(ra>=0) {
4308       int rs=get_reg(regs[i+1].regmap,rs1[i+1]);
4309       int offset=imm[i+1];
4310       int c=(regs[i+1].wasconst>>rs)&1;
4311       if(c) {
4312         if(itype[i+1]==STORE||itype[i+1]==STORELR
4313            ||(opcode[i+1]&0x3b)==0x39||(opcode[i+1]&0x3b)==0x3a) { // SWC1/SDC1, SWC2/SDC2
4314           // Stores to memory go thru the mapper to detect self-modifying
4315           // code, loads don't.
4316           if((unsigned int)(constmap[i+1][rs]+offset)>=0xC0000000 ||
4317              (unsigned int)(constmap[i+1][rs]+offset)<0x80000000+RAM_SIZE )
4318             generate_map_const(constmap[i+1][rs]+offset,ra);
4319         }else{
4320           if((signed int)(constmap[i+1][rs]+offset)>=(signed int)0xC0000000)
4321             generate_map_const(constmap[i+1][rs]+offset,ra);
4322         }
4323       }
4324       /*else if(rs1[i]==0) {
4325         generate_map_const(offset,ra);
4326       }*/
4327     }
4328     #endif
4329     // Actual address
4330     agr=AGEN1+((i+1)&1);
4331     ra=get_reg(i_regs->regmap,agr);
4332     if(ra>=0) {
4333       int rs=get_reg(regs[i+1].regmap,rs1[i+1]);
4334       int offset=imm[i+1];
4335       int c=(regs[i+1].wasconst>>rs)&1;
4336       if(c&&(rs1[i+1]!=rt1[i+1]||itype[i+1]!=LOAD)) {
4337         if (opcode[i+1]==0x22||opcode[i+1]==0x26) {
4338           emit_movimm((constmap[i+1][rs]+offset)&0xFFFFFFFC,ra); // LWL/LWR
4339         }else if (opcode[i+1]==0x1a||opcode[i+1]==0x1b) {
4340           emit_movimm((constmap[i+1][rs]+offset)&0xFFFFFFF8,ra); // LDL/LDR
4341         }else{
4342           #ifdef HOST_IMM_ADDR32
4343           if((itype[i+1]!=LOAD&&(opcode[i+1]&0x3b)!=0x31&&(opcode[i+1]&0x3b)!=0x32) || // LWC1/LDC1/LWC2/LDC2
4344              (using_tlb&&((signed int)constmap[i+1][rs]+offset)>=(signed int)0xC0000000))
4345           #endif
4346           emit_movimm(constmap[i+1][rs]+offset,ra);
4347           regs[i+1].loadedconst|=1<<ra;
4348         }
4349       }
4350       else if(rs1[i+1]==0) {
4351         // Using r0 as a base address
4352         if (opcode[i+1]==0x22||opcode[i+1]==0x26) {
4353           emit_movimm(offset&0xFFFFFFFC,ra); // LWL/LWR
4354         }else if (opcode[i+1]==0x1a||opcode[i+1]==0x1b) {
4355           emit_movimm(offset&0xFFFFFFF8,ra); // LDL/LDR
4356         }else{
4357           emit_movimm(offset,ra);
4358         }
4359       }
4360     }
4361   }
4362 }
4363
4364 int get_final_value(int hr, int i, int *value)
4365 {
4366   int reg=regs[i].regmap[hr];
4367   while(i<slen-1) {
4368     if(regs[i+1].regmap[hr]!=reg) break;
4369     if(!((regs[i+1].isconst>>hr)&1)) break;
4370     if(bt[i+1]) break;
4371     i++;
4372   }
4373   if(i<slen-1) {
4374     if(itype[i]==UJUMP||itype[i]==RJUMP||itype[i]==CJUMP||itype[i]==SJUMP) {
4375       *value=constmap[i][hr];
4376       return 1;
4377     }
4378     if(!bt[i+1]) {
4379       if(itype[i+1]==UJUMP||itype[i+1]==RJUMP||itype[i+1]==CJUMP||itype[i+1]==SJUMP) {
4380         // Load in delay slot, out-of-order execution
4381         if(itype[i+2]==LOAD&&rs1[i+2]==reg&&rt1[i+2]==reg&&((regs[i+1].wasconst>>hr)&1))
4382         {
4383           #ifdef HOST_IMM_ADDR32
4384           if(!using_tlb||((signed int)constmap[i][hr]+imm[i+2])<(signed int)0xC0000000) return 0;
4385           #endif
4386           // Precompute load address
4387           *value=constmap[i][hr]+imm[i+2];
4388           return 1;
4389         }
4390       }
4391       if(itype[i+1]==LOAD&&rs1[i+1]==reg&&rt1[i+1]==reg)
4392       {
4393         #ifdef HOST_IMM_ADDR32
4394         if(!using_tlb||((signed int)constmap[i][hr]+imm[i+1])<(signed int)0xC0000000) return 0;
4395         #endif
4396         // Precompute load address
4397         *value=constmap[i][hr]+imm[i+1];
4398         //printf("c=%x imm=%x\n",(int)constmap[i][hr],imm[i+1]);
4399         return 1;
4400       }
4401     }
4402   }
4403   *value=constmap[i][hr];
4404   //printf("c=%x\n",(int)constmap[i][hr]);
4405   if(i==slen-1) return 1;
4406   if(reg<64) {
4407     return !((unneeded_reg[i+1]>>reg)&1);
4408   }else{
4409     return !((unneeded_reg_upper[i+1]>>reg)&1);
4410   }
4411 }
4412
4413 // Load registers with known constants
4414 void load_consts(signed char pre[],signed char regmap[],int is32,int i)
4415 {
4416   int hr,hr2;
4417   // propagate loaded constant flags
4418   if(i==0||bt[i])
4419     regs[i].loadedconst=0;
4420   else {
4421     for(hr=0;hr<HOST_REGS;hr++) {
4422       if(hr!=EXCLUDE_REG&&regmap[hr]>=0&&((regs[i-1].isconst>>hr)&1)&&pre[hr]==regmap[hr]
4423          &&regmap[hr]==regs[i-1].regmap[hr]&&((regs[i-1].loadedconst>>hr)&1))
4424       {
4425         regs[i].loadedconst|=1<<hr;
4426       }
4427     }
4428   }
4429   // Load 32-bit regs
4430   for(hr=0;hr<HOST_REGS;hr++) {
4431     if(hr!=EXCLUDE_REG&&regmap[hr]>=0) {
4432       //if(entry[hr]!=regmap[hr]) {
4433       if(!((regs[i].loadedconst>>hr)&1)) {
4434         if(((regs[i].isconst>>hr)&1)&&regmap[hr]<64&&regmap[hr]>0) {
4435           int value,similar=0;
4436           if(get_final_value(hr,i,&value)) {
4437             // see if some other register has similar value
4438             for(hr2=0;hr2<HOST_REGS;hr2++) {
4439               if(hr2!=EXCLUDE_REG&&((regs[i].loadedconst>>hr2)&1)) {
4440                 if(is_similar_value(value,constmap[i][hr2])) {
4441                   similar=1;
4442                   break;
4443                 }
4444               }
4445             }
4446             if(similar) {
4447               int value2;
4448               if(get_final_value(hr2,i,&value2)) // is this needed?
4449                 emit_movimm_from(value2,hr2,value,hr);
4450               else
4451                 emit_movimm(value,hr);
4452             }
4453             else if(value==0) {
4454               emit_zeroreg(hr);
4455             }
4456             else {
4457               emit_movimm(value,hr);
4458             }
4459           }
4460           regs[i].loadedconst|=1<<hr;
4461         }
4462       }
4463     }
4464   }
4465   // Load 64-bit regs
4466   for(hr=0;hr<HOST_REGS;hr++) {
4467     if(hr!=EXCLUDE_REG&&regmap[hr]>=0) {
4468       //if(entry[hr]!=regmap[hr]) {
4469       if(i==0||!((regs[i-1].isconst>>hr)&1)||pre[hr]!=regmap[hr]||bt[i]) {
4470         if(((regs[i].isconst>>hr)&1)&&regmap[hr]>64) {
4471           if((is32>>(regmap[hr]&63))&1) {
4472             int lr=get_reg(regmap,regmap[hr]-64);
4473             assert(lr>=0);
4474             emit_sarimm(lr,31,hr);
4475           }
4476           else
4477           {
4478             int value;
4479             if(get_final_value(hr,i,&value)) {
4480               if(value==0) {
4481                 emit_zeroreg(hr);
4482               }
4483               else {
4484                 emit_movimm(value,hr);
4485               }
4486             }
4487           }
4488         }
4489       }
4490     }
4491   }
4492 }
4493 void load_all_consts(signed char regmap[],int is32,u_int dirty,int i)
4494 {
4495   int hr;
4496   // Load 32-bit regs
4497   for(hr=0;hr<HOST_REGS;hr++) {
4498     if(hr!=EXCLUDE_REG&&regmap[hr]>=0&&((dirty>>hr)&1)) {
4499       if(((regs[i].isconst>>hr)&1)&&regmap[hr]<64&&regmap[hr]>0) {
4500         int value=constmap[i][hr];
4501         if(value==0) {
4502           emit_zeroreg(hr);
4503         }
4504         else {
4505           emit_movimm(value,hr);
4506         }
4507       }
4508     }
4509   }
4510   // Load 64-bit regs
4511   for(hr=0;hr<HOST_REGS;hr++) {
4512     if(hr!=EXCLUDE_REG&&regmap[hr]>=0&&((dirty>>hr)&1)) {
4513       if(((regs[i].isconst>>hr)&1)&&regmap[hr]>64) {
4514         if((is32>>(regmap[hr]&63))&1) {
4515           int lr=get_reg(regmap,regmap[hr]-64);
4516           assert(lr>=0);
4517           emit_sarimm(lr,31,hr);
4518         }
4519         else
4520         {
4521           int value=constmap[i][hr];
4522           if(value==0) {
4523             emit_zeroreg(hr);
4524           }
4525           else {
4526             emit_movimm(value,hr);
4527           }
4528         }
4529       }
4530     }
4531   }
4532 }
4533
4534 // Write out all dirty registers (except cycle count)
4535 void wb_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty)
4536 {
4537   int hr;
4538   for(hr=0;hr<HOST_REGS;hr++) {
4539     if(hr!=EXCLUDE_REG) {
4540       if(i_regmap[hr]>0) {
4541         if(i_regmap[hr]!=CCREG) {
4542           if((i_dirty>>hr)&1) {
4543             if(i_regmap[hr]<64) {
4544               emit_storereg(i_regmap[hr],hr);
4545 #ifndef FORCE32
4546               if( ((i_is32>>i_regmap[hr])&1) ) {
4547                 #ifdef DESTRUCTIVE_WRITEBACK
4548                 emit_sarimm(hr,31,hr);
4549                 emit_storereg(i_regmap[hr]|64,hr);
4550                 #else
4551                 emit_sarimm(hr,31,HOST_TEMPREG);
4552                 emit_storereg(i_regmap[hr]|64,HOST_TEMPREG);
4553                 #endif
4554               }
4555 #endif
4556             }else{
4557               if( !((i_is32>>(i_regmap[hr]&63))&1) ) {
4558                 emit_storereg(i_regmap[hr],hr);
4559               }
4560             }
4561           }
4562         }
4563       }
4564     }
4565   }
4566 }
4567 // Write out dirty registers that we need to reload (pair with load_needed_regs)
4568 // This writes the registers not written by store_regs_bt
4569 void wb_needed_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr)
4570 {
4571   int hr;
4572   int t=(addr-start)>>2;
4573   for(hr=0;hr<HOST_REGS;hr++) {
4574     if(hr!=EXCLUDE_REG) {
4575       if(i_regmap[hr]>0) {
4576         if(i_regmap[hr]!=CCREG) {
4577           if(i_regmap[hr]==regs[t].regmap_entry[hr] && ((regs[t].dirty>>hr)&1) && !(((i_is32&~regs[t].was32&~unneeded_reg_upper[t])>>(i_regmap[hr]&63))&1)) {
4578             if((i_dirty>>hr)&1) {
4579               if(i_regmap[hr]<64) {
4580                 emit_storereg(i_regmap[hr],hr);
4581 #ifndef FORCE32
4582                 if( ((i_is32>>i_regmap[hr])&1) ) {
4583                   #ifdef DESTRUCTIVE_WRITEBACK
4584                   emit_sarimm(hr,31,hr);
4585                   emit_storereg(i_regmap[hr]|64,hr);
4586                   #else
4587                   emit_sarimm(hr,31,HOST_TEMPREG);
4588                   emit_storereg(i_regmap[hr]|64,HOST_TEMPREG);
4589                   #endif
4590                 }
4591 #endif
4592               }else{
4593                 if( !((i_is32>>(i_regmap[hr]&63))&1) ) {
4594                   emit_storereg(i_regmap[hr],hr);
4595                 }
4596               }
4597             }
4598           }
4599         }
4600       }
4601     }
4602   }
4603 }
4604
4605 // Load all registers (except cycle count)
4606 void load_all_regs(signed char i_regmap[])
4607 {
4608   int hr;
4609   for(hr=0;hr<HOST_REGS;hr++) {
4610     if(hr!=EXCLUDE_REG) {
4611       if(i_regmap[hr]==0) {
4612         emit_zeroreg(hr);
4613       }
4614       else
4615       if(i_regmap[hr]>0 && (i_regmap[hr]&63)<TEMPREG && i_regmap[hr]!=CCREG)
4616       {
4617         emit_loadreg(i_regmap[hr],hr);
4618       }
4619     }
4620   }
4621 }
4622
4623 // Load all current registers also needed by next instruction
4624 void load_needed_regs(signed char i_regmap[],signed char next_regmap[])
4625 {
4626   int hr;
4627   for(hr=0;hr<HOST_REGS;hr++) {
4628     if(hr!=EXCLUDE_REG) {
4629       if(get_reg(next_regmap,i_regmap[hr])>=0) {
4630         if(i_regmap[hr]==0) {
4631           emit_zeroreg(hr);
4632         }
4633         else
4634         if(i_regmap[hr]>0 && (i_regmap[hr]&63)<TEMPREG && i_regmap[hr]!=CCREG)
4635         {
4636           emit_loadreg(i_regmap[hr],hr);
4637         }
4638       }
4639     }
4640   }
4641 }
4642
4643 // Load all regs, storing cycle count if necessary
4644 void load_regs_entry(int t)
4645 {
4646   int hr;
4647   if(is_ds[t]) emit_addimm(HOST_CCREG,CLOCK_ADJUST(1),HOST_CCREG);
4648   else if(ccadj[t]) emit_addimm(HOST_CCREG,-CLOCK_ADJUST(ccadj[t]),HOST_CCREG);
4649   if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) {
4650     emit_storereg(CCREG,HOST_CCREG);
4651   }
4652   // Load 32-bit regs
4653   for(hr=0;hr<HOST_REGS;hr++) {
4654     if(regs[t].regmap_entry[hr]>=0&&regs[t].regmap_entry[hr]<TEMPREG) {
4655       if(regs[t].regmap_entry[hr]==0) {
4656         emit_zeroreg(hr);
4657       }
4658       else if(regs[t].regmap_entry[hr]!=CCREG)
4659       {
4660         emit_loadreg(regs[t].regmap_entry[hr],hr);
4661       }
4662     }
4663   }
4664   // Load 64-bit regs
4665   for(hr=0;hr<HOST_REGS;hr++) {
4666     if(regs[t].regmap_entry[hr]>=64&&regs[t].regmap_entry[hr]<TEMPREG+64) {
4667       assert(regs[t].regmap_entry[hr]!=64);
4668       if((regs[t].was32>>(regs[t].regmap_entry[hr]&63))&1) {
4669         int lr=get_reg(regs[t].regmap_entry,regs[t].regmap_entry[hr]-64);
4670         if(lr<0) {
4671           emit_loadreg(regs[t].regmap_entry[hr],hr);
4672         }
4673         else
4674         {
4675           emit_sarimm(lr,31,hr);
4676         }
4677       }
4678       else
4679       {
4680         emit_loadreg(regs[t].regmap_entry[hr],hr);
4681       }
4682     }
4683   }
4684 }
4685
4686 // Store dirty registers prior to branch
4687 void store_regs_bt(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr)
4688 {
4689   if(internal_branch(i_is32,addr))
4690   {
4691     int t=(addr-start)>>2;
4692     int hr;
4693     for(hr=0;hr<HOST_REGS;hr++) {
4694       if(hr!=EXCLUDE_REG) {
4695         if(i_regmap[hr]>0 && i_regmap[hr]!=CCREG) {
4696           if(i_regmap[hr]!=regs[t].regmap_entry[hr] || !((regs[t].dirty>>hr)&1) || (((i_is32&~regs[t].was32&~unneeded_reg_upper[t])>>(i_regmap[hr]&63))&1)) {
4697             if((i_dirty>>hr)&1) {
4698               if(i_regmap[hr]<64) {
4699                 if(!((unneeded_reg[t]>>i_regmap[hr])&1)) {
4700                   emit_storereg(i_regmap[hr],hr);
4701                   if( ((i_is32>>i_regmap[hr])&1) && !((unneeded_reg_upper[t]>>i_regmap[hr])&1) ) {
4702                     #ifdef DESTRUCTIVE_WRITEBACK
4703                     emit_sarimm(hr,31,hr);
4704                     emit_storereg(i_regmap[hr]|64,hr);
4705                     #else
4706                     emit_sarimm(hr,31,HOST_TEMPREG);
4707                     emit_storereg(i_regmap[hr]|64,HOST_TEMPREG);
4708                     #endif
4709                   }
4710                 }
4711               }else{
4712                 if( !((i_is32>>(i_regmap[hr]&63))&1) && !((unneeded_reg_upper[t]>>(i_regmap[hr]&63))&1) ) {
4713                   emit_storereg(i_regmap[hr],hr);
4714                 }
4715               }
4716             }
4717           }
4718         }
4719       }
4720     }
4721   }
4722   else
4723   {
4724     // Branch out of this block, write out all dirty regs
4725     wb_dirtys(i_regmap,i_is32,i_dirty);
4726   }
4727 }
4728
4729 // Load all needed registers for branch target
4730 void load_regs_bt(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr)
4731 {
4732   //if(addr>=start && addr<(start+slen*4))
4733   if(internal_branch(i_is32,addr))
4734   {
4735     int t=(addr-start)>>2;
4736     int hr;
4737     // Store the cycle count before loading something else
4738     if(i_regmap[HOST_CCREG]!=CCREG) {
4739       assert(i_regmap[HOST_CCREG]==-1);
4740     }
4741     if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) {
4742       emit_storereg(CCREG,HOST_CCREG);
4743     }
4744     // Load 32-bit regs
4745     for(hr=0;hr<HOST_REGS;hr++) {
4746       if(hr!=EXCLUDE_REG&&regs[t].regmap_entry[hr]>=0&&regs[t].regmap_entry[hr]<TEMPREG) {
4747         #ifdef DESTRUCTIVE_WRITEBACK
4748         if(i_regmap[hr]!=regs[t].regmap_entry[hr] || ( !((regs[t].dirty>>hr)&1) && ((i_dirty>>hr)&1) && (((i_is32&~unneeded_reg_upper[t])>>i_regmap[hr])&1) ) || (((i_is32&~regs[t].was32&~unneeded_reg_upper[t])>>(i_regmap[hr]&63))&1)) {
4749         #else
4750         if(i_regmap[hr]!=regs[t].regmap_entry[hr] ) {
4751         #endif
4752           if(regs[t].regmap_entry[hr]==0) {
4753             emit_zeroreg(hr);
4754           }
4755           else if(regs[t].regmap_entry[hr]!=CCREG)
4756           {
4757             emit_loadreg(regs[t].regmap_entry[hr],hr);
4758           }
4759         }
4760       }
4761     }
4762     //Load 64-bit regs
4763     for(hr=0;hr<HOST_REGS;hr++) {
4764       if(hr!=EXCLUDE_REG&&regs[t].regmap_entry[hr]>=64&&regs[t].regmap_entry[hr]<TEMPREG+64) {
4765         if(i_regmap[hr]!=regs[t].regmap_entry[hr]) {
4766           assert(regs[t].regmap_entry[hr]!=64);
4767           if((i_is32>>(regs[t].regmap_entry[hr]&63))&1) {
4768             int lr=get_reg(regs[t].regmap_entry,regs[t].regmap_entry[hr]-64);
4769             if(lr<0) {
4770               emit_loadreg(regs[t].regmap_entry[hr],hr);
4771             }
4772             else
4773             {
4774               emit_sarimm(lr,31,hr);
4775             }
4776           }
4777           else
4778           {
4779             emit_loadreg(regs[t].regmap_entry[hr],hr);
4780           }
4781         }
4782         else if((i_is32>>(regs[t].regmap_entry[hr]&63))&1) {
4783           int lr=get_reg(regs[t].regmap_entry,regs[t].regmap_entry[hr]-64);
4784           assert(lr>=0);
4785           emit_sarimm(lr,31,hr);
4786         }
4787       }
4788     }
4789   }
4790 }
4791
4792 int match_bt(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr)
4793 {
4794   if(addr>=start && addr<start+slen*4-4)
4795   {
4796     int t=(addr-start)>>2;
4797     int hr;
4798     if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) return 0;
4799     for(hr=0;hr<HOST_REGS;hr++)
4800     {
4801       if(hr!=EXCLUDE_REG)
4802       {
4803         if(i_regmap[hr]!=regs[t].regmap_entry[hr])
4804         {
4805           if(regs[t].regmap_entry[hr]>=0&&(regs[t].regmap_entry[hr]|64)<TEMPREG+64)
4806           {
4807             return 0;
4808           }
4809           else
4810           if((i_dirty>>hr)&1)
4811           {
4812             if(i_regmap[hr]<TEMPREG)
4813             {
4814               if(!((unneeded_reg[t]>>i_regmap[hr])&1))
4815                 return 0;
4816             }
4817             else if(i_regmap[hr]>=64&&i_regmap[hr]<TEMPREG+64)
4818             {
4819               if(!((unneeded_reg_upper[t]>>(i_regmap[hr]&63))&1))
4820                 return 0;
4821             }
4822           }
4823         }
4824         else // Same register but is it 32-bit or dirty?
4825         if(i_regmap[hr]>=0)
4826         {
4827           if(!((regs[t].dirty>>hr)&1))
4828           {
4829             if((i_dirty>>hr)&1)
4830             {
4831               if(!((unneeded_reg[t]>>i_regmap[hr])&1))
4832               {
4833                 //printf("%x: dirty no match\n",addr);
4834                 return 0;
4835               }
4836             }
4837           }
4838           if((((regs[t].was32^i_is32)&~unneeded_reg_upper[t])>>(i_regmap[hr]&63))&1)
4839           {
4840             //printf("%x: is32 no match\n",addr);
4841             return 0;
4842           }
4843         }
4844       }
4845     }
4846     //if(is32[t]&~unneeded_reg_upper[t]&~i_is32) return 0;
4847 #ifndef FORCE32
4848     if(requires_32bit[t]&~i_is32) return 0;
4849 #endif
4850     // Delay slots are not valid branch targets
4851     //if(t>0&&(itype[t-1]==RJUMP||itype[t-1]==UJUMP||itype[t-1]==CJUMP||itype[t-1]==SJUMP||itype[t-1]==FJUMP)) return 0;
4852     // Delay slots require additional processing, so do not match
4853     if(is_ds[t]) return 0;
4854   }
4855   else
4856   {
4857     int hr;
4858     for(hr=0;hr<HOST_REGS;hr++)
4859     {
4860       if(hr!=EXCLUDE_REG)
4861       {
4862         if(i_regmap[hr]>=0)
4863         {
4864           if(hr!=HOST_CCREG||i_regmap[hr]!=CCREG)
4865           {
4866             if((i_dirty>>hr)&1)
4867             {
4868               return 0;
4869             }
4870           }
4871         }
4872       }
4873     }
4874   }
4875   return 1;
4876 }
4877
4878 // Used when a branch jumps into the delay slot of another branch
4879 void ds_assemble_entry(int i)
4880 {
4881   int t=(ba[i]-start)>>2;
4882   if(!instr_addr[t]) instr_addr[t]=(u_int)out;
4883   assem_debug("Assemble delay slot at %x\n",ba[i]);
4884   assem_debug("<->\n");
4885   if(regs[t].regmap_entry[HOST_CCREG]==CCREG&&regs[t].regmap[HOST_CCREG]!=CCREG)
4886     wb_register(CCREG,regs[t].regmap_entry,regs[t].wasdirty,regs[t].was32);
4887   load_regs(regs[t].regmap_entry,regs[t].regmap,regs[t].was32,rs1[t],rs2[t]);
4888   address_generation(t,&regs[t],regs[t].regmap_entry);
4889   if(itype[t]==STORE||itype[t]==STORELR||(opcode[t]&0x3b)==0x39||(opcode[t]&0x3b)==0x3a)
4890     load_regs(regs[t].regmap_entry,regs[t].regmap,regs[t].was32,INVCP,INVCP);
4891   cop1_usable=0;
4892   is_delayslot=0;
4893   switch(itype[t]) {
4894     case ALU:
4895       alu_assemble(t,&regs[t]);break;
4896     case IMM16:
4897       imm16_assemble(t,&regs[t]);break;
4898     case SHIFT:
4899       shift_assemble(t,&regs[t]);break;
4900     case SHIFTIMM:
4901       shiftimm_assemble(t,&regs[t]);break;
4902     case LOAD:
4903       load_assemble(t,&regs[t]);break;
4904     case LOADLR:
4905       loadlr_assemble(t,&regs[t]);break;
4906     case STORE:
4907       store_assemble(t,&regs[t]);break;
4908     case STORELR:
4909       storelr_assemble(t,&regs[t]);break;
4910     case COP0:
4911       cop0_assemble(t,&regs[t]);break;
4912     case COP1:
4913       cop1_assemble(t,&regs[t]);break;
4914     case C1LS:
4915       c1ls_assemble(t,&regs[t]);break;
4916     case COP2:
4917       cop2_assemble(t,&regs[t]);break;
4918     case C2LS:
4919       c2ls_assemble(t,&regs[t]);break;
4920     case C2OP:
4921       c2op_assemble(t,&regs[t]);break;
4922     case FCONV:
4923       fconv_assemble(t,&regs[t]);break;
4924     case FLOAT:
4925       float_assemble(t,&regs[t]);break;
4926     case FCOMP:
4927       fcomp_assemble(t,&regs[t]);break;
4928     case MULTDIV:
4929       multdiv_assemble(t,&regs[t]);break;
4930     case MOV:
4931       mov_assemble(t,&regs[t]);break;
4932     case SYSCALL:
4933     case HLECALL:
4934     case INTCALL:
4935     case SPAN:
4936     case UJUMP:
4937     case RJUMP:
4938     case CJUMP:
4939     case SJUMP:
4940     case FJUMP:
4941       printf("Jump in the delay slot.  This is probably a bug.\n");
4942   }
4943   store_regs_bt(regs[t].regmap,regs[t].is32,regs[t].dirty,ba[i]+4);
4944   load_regs_bt(regs[t].regmap,regs[t].is32,regs[t].dirty,ba[i]+4);
4945   if(internal_branch(regs[t].is32,ba[i]+4))
4946     assem_debug("branch: internal\n");
4947   else
4948     assem_debug("branch: external\n");
4949   assert(internal_branch(regs[t].is32,ba[i]+4));
4950   add_to_linker((int)out,ba[i]+4,internal_branch(regs[t].is32,ba[i]+4));
4951   emit_jmp(0);
4952 }
4953
4954 void do_cc(int i,signed char i_regmap[],int *adj,int addr,int taken,int invert)
4955 {
4956   int count;
4957   int jaddr;
4958   int idle=0;
4959   if(itype[i]==RJUMP)
4960   {
4961     *adj=0;
4962   }
4963   //if(ba[i]>=start && ba[i]<(start+slen*4))
4964   if(internal_branch(branch_regs[i].is32,ba[i]))
4965   {
4966     int t=(ba[i]-start)>>2;
4967     if(is_ds[t]) *adj=-1; // Branch into delay slot adds an extra cycle
4968     else *adj=ccadj[t];
4969   }
4970   else
4971   {
4972     *adj=0;
4973   }
4974   count=ccadj[i];
4975   if(taken==TAKEN && i==(ba[i]-start)>>2 && source[i+1]==0) {
4976     // Idle loop
4977     if(count&1) emit_addimm_and_set_flags(2*(count+2),HOST_CCREG);
4978     idle=(int)out;
4979     //emit_subfrommem(&idlecount,HOST_CCREG); // Count idle cycles
4980     emit_andimm(HOST_CCREG,3,HOST_CCREG);
4981     jaddr=(int)out;
4982     emit_jmp(0);
4983   }
4984   else if(*adj==0||invert) {
4985     emit_addimm_and_set_flags(CLOCK_ADJUST(count+2),HOST_CCREG);
4986     jaddr=(int)out;
4987     emit_jns(0);
4988   }
4989   else
4990   {
4991     emit_cmpimm(HOST_CCREG,-CLOCK_ADJUST(count+2));
4992     jaddr=(int)out;
4993     emit_jns(0);
4994   }
4995   add_stub(CC_STUB,jaddr,idle?idle:(int)out,(*adj==0||invert||idle)?0:(count+2),i,addr,taken,0);
4996 }
4997
4998 void do_ccstub(int n)
4999 {
5000   literal_pool(256);
5001   assem_debug("do_ccstub %x\n",start+stubs[n][4]*4);
5002   set_jump_target(stubs[n][1],(int)out);
5003   int i=stubs[n][4];
5004   if(stubs[n][6]==NULLDS) {
5005     // Delay slot instruction is nullified ("likely" branch)
5006     wb_dirtys(regs[i].regmap,regs[i].is32,regs[i].dirty);
5007   }
5008   else if(stubs[n][6]!=TAKEN) {
5009     wb_dirtys(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty);
5010   }
5011   else {
5012     if(internal_branch(branch_regs[i].is32,ba[i]))
5013       wb_needed_dirtys(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5014   }
5015   if(stubs[n][5]!=-1)
5016   {
5017     // Save PC as return address
5018     emit_movimm(stubs[n][5],EAX);
5019     emit_writeword(EAX,(int)&pcaddr);
5020   }
5021   else
5022   {
5023     // Return address depends on which way the branch goes
5024     if(itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
5025     {
5026       int s1l=get_reg(branch_regs[i].regmap,rs1[i]);
5027       int s1h=get_reg(branch_regs[i].regmap,rs1[i]|64);
5028       int s2l=get_reg(branch_regs[i].regmap,rs2[i]);
5029       int s2h=get_reg(branch_regs[i].regmap,rs2[i]|64);
5030       if(rs1[i]==0)
5031       {
5032         s1l=s2l;s1h=s2h;
5033         s2l=s2h=-1;
5034       }
5035       else if(rs2[i]==0)
5036       {
5037         s2l=s2h=-1;
5038       }
5039       if((branch_regs[i].is32>>rs1[i])&(branch_regs[i].is32>>rs2[i])&1) {
5040         s1h=s2h=-1;
5041       }
5042       assert(s1l>=0);
5043       #ifdef DESTRUCTIVE_WRITEBACK
5044       if(rs1[i]) {
5045         if((branch_regs[i].dirty>>s1l)&(branch_regs[i].is32>>rs1[i])&1)
5046           emit_loadreg(rs1[i],s1l);
5047       }
5048       else {
5049         if((branch_regs[i].dirty>>s1l)&(branch_regs[i].is32>>rs2[i])&1)
5050           emit_loadreg(rs2[i],s1l);
5051       }
5052       if(s2l>=0)
5053         if((branch_regs[i].dirty>>s2l)&(branch_regs[i].is32>>rs2[i])&1)
5054           emit_loadreg(rs2[i],s2l);
5055       #endif
5056       int hr=0;
5057       int addr=-1,alt=-1,ntaddr=-1;
5058       while(hr<HOST_REGS)
5059       {
5060         if(hr!=EXCLUDE_REG && hr!=HOST_CCREG &&
5061            (branch_regs[i].regmap[hr]&63)!=rs1[i] &&
5062            (branch_regs[i].regmap[hr]&63)!=rs2[i] )
5063         {
5064           addr=hr++;break;
5065         }
5066         hr++;
5067       }
5068       while(hr<HOST_REGS)
5069       {
5070         if(hr!=EXCLUDE_REG && hr!=HOST_CCREG &&
5071            (branch_regs[i].regmap[hr]&63)!=rs1[i] &&
5072            (branch_regs[i].regmap[hr]&63)!=rs2[i] )
5073         {
5074           alt=hr++;break;
5075         }
5076         hr++;
5077       }
5078       if((opcode[i]&0x2E)==6) // BLEZ/BGTZ needs another register
5079       {
5080         while(hr<HOST_REGS)
5081         {
5082           if(hr!=EXCLUDE_REG && hr!=HOST_CCREG &&
5083              (branch_regs[i].regmap[hr]&63)!=rs1[i] &&
5084              (branch_regs[i].regmap[hr]&63)!=rs2[i] )
5085           {
5086             ntaddr=hr;break;
5087           }
5088           hr++;
5089         }
5090         assert(hr<HOST_REGS);
5091       }
5092       if((opcode[i]&0x2f)==4) // BEQ
5093       {
5094         #ifdef HAVE_CMOV_IMM
5095         if(s1h<0) {
5096           if(s2l>=0) emit_cmp(s1l,s2l);
5097           else emit_test(s1l,s1l);
5098           emit_cmov2imm_e_ne_compact(ba[i],start+i*4+8,addr);
5099         }
5100         else
5101         #endif
5102         {
5103           emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt);
5104           if(s1h>=0) {
5105             if(s2h>=0) emit_cmp(s1h,s2h);
5106             else emit_test(s1h,s1h);
5107             emit_cmovne_reg(alt,addr);
5108           }
5109           if(s2l>=0) emit_cmp(s1l,s2l);
5110           else emit_test(s1l,s1l);
5111           emit_cmovne_reg(alt,addr);
5112         }
5113       }
5114       if((opcode[i]&0x2f)==5) // BNE
5115       {
5116         #ifdef HAVE_CMOV_IMM
5117         if(s1h<0) {
5118           if(s2l>=0) emit_cmp(s1l,s2l);
5119           else emit_test(s1l,s1l);
5120           emit_cmov2imm_e_ne_compact(start+i*4+8,ba[i],addr);
5121         }
5122         else
5123         #endif
5124         {
5125           emit_mov2imm_compact(start+i*4+8,addr,ba[i],alt);
5126           if(s1h>=0) {
5127             if(s2h>=0) emit_cmp(s1h,s2h);
5128             else emit_test(s1h,s1h);
5129             emit_cmovne_reg(alt,addr);
5130           }
5131           if(s2l>=0) emit_cmp(s1l,s2l);
5132           else emit_test(s1l,s1l);
5133           emit_cmovne_reg(alt,addr);
5134         }
5135       }
5136       if((opcode[i]&0x2f)==6) // BLEZ
5137       {
5138         //emit_movimm(ba[i],alt);
5139         //emit_movimm(start+i*4+8,addr);
5140         emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr);
5141         emit_cmpimm(s1l,1);
5142         if(s1h>=0) emit_mov(addr,ntaddr);
5143         emit_cmovl_reg(alt,addr);
5144         if(s1h>=0) {
5145           emit_test(s1h,s1h);
5146           emit_cmovne_reg(ntaddr,addr);
5147           emit_cmovs_reg(alt,addr);
5148         }
5149       }
5150       if((opcode[i]&0x2f)==7) // BGTZ
5151       {
5152         //emit_movimm(ba[i],addr);
5153         //emit_movimm(start+i*4+8,ntaddr);
5154         emit_mov2imm_compact(ba[i],addr,start+i*4+8,ntaddr);
5155         emit_cmpimm(s1l,1);
5156         if(s1h>=0) emit_mov(addr,alt);
5157         emit_cmovl_reg(ntaddr,addr);
5158         if(s1h>=0) {
5159           emit_test(s1h,s1h);
5160           emit_cmovne_reg(alt,addr);
5161           emit_cmovs_reg(ntaddr,addr);
5162         }
5163       }
5164       if((opcode[i]==1)&&(opcode2[i]&0x2D)==0) // BLTZ
5165       {
5166         //emit_movimm(ba[i],alt);
5167         //emit_movimm(start+i*4+8,addr);
5168         emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr);
5169         if(s1h>=0) emit_test(s1h,s1h);
5170         else emit_test(s1l,s1l);
5171         emit_cmovs_reg(alt,addr);
5172       }
5173       if((opcode[i]==1)&&(opcode2[i]&0x2D)==1) // BGEZ
5174       {
5175         //emit_movimm(ba[i],addr);
5176         //emit_movimm(start+i*4+8,alt);
5177         emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt);
5178         if(s1h>=0) emit_test(s1h,s1h);
5179         else emit_test(s1l,s1l);
5180         emit_cmovs_reg(alt,addr);
5181       }
5182       if(opcode[i]==0x11 && opcode2[i]==0x08 ) {
5183         if(source[i]&0x10000) // BC1T
5184         {
5185           //emit_movimm(ba[i],alt);
5186           //emit_movimm(start+i*4+8,addr);
5187           emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr);
5188           emit_testimm(s1l,0x800000);
5189           emit_cmovne_reg(alt,addr);
5190         }
5191         else // BC1F
5192         {
5193           //emit_movimm(ba[i],addr);
5194           //emit_movimm(start+i*4+8,alt);
5195           emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt);
5196           emit_testimm(s1l,0x800000);
5197           emit_cmovne_reg(alt,addr);
5198         }
5199       }
5200       emit_writeword(addr,(int)&pcaddr);
5201     }
5202     else
5203     if(itype[i]==RJUMP)
5204     {
5205       int r=get_reg(branch_regs[i].regmap,rs1[i]);
5206       if(rs1[i]==rt1[i+1]||rs1[i]==rt2[i+1]) {
5207         r=get_reg(branch_regs[i].regmap,RTEMP);
5208       }
5209       emit_writeword(r,(int)&pcaddr);
5210     }
5211     else {printf("Unknown branch type in do_ccstub\n");exit(1);}
5212   }
5213   // Update cycle count
5214   assert(branch_regs[i].regmap[HOST_CCREG]==CCREG||branch_regs[i].regmap[HOST_CCREG]==-1);
5215   if(stubs[n][3]) emit_addimm(HOST_CCREG,CLOCK_ADJUST((int)stubs[n][3]),HOST_CCREG);
5216   emit_call((int)cc_interrupt);
5217   if(stubs[n][3]) emit_addimm(HOST_CCREG,-CLOCK_ADJUST((int)stubs[n][3]),HOST_CCREG);
5218   if(stubs[n][6]==TAKEN) {
5219     if(internal_branch(branch_regs[i].is32,ba[i]))
5220       load_needed_regs(branch_regs[i].regmap,regs[(ba[i]-start)>>2].regmap_entry);
5221     else if(itype[i]==RJUMP) {
5222       if(get_reg(branch_regs[i].regmap,RTEMP)>=0)
5223         emit_readword((int)&pcaddr,get_reg(branch_regs[i].regmap,RTEMP));
5224       else
5225         emit_loadreg(rs1[i],get_reg(branch_regs[i].regmap,rs1[i]));
5226     }
5227   }else if(stubs[n][6]==NOTTAKEN) {
5228     if(i<slen-2) load_needed_regs(branch_regs[i].regmap,regmap_pre[i+2]);
5229     else load_all_regs(branch_regs[i].regmap);
5230   }else if(stubs[n][6]==NULLDS) {
5231     // Delay slot instruction is nullified ("likely" branch)
5232     if(i<slen-2) load_needed_regs(regs[i].regmap,regmap_pre[i+2]);
5233     else load_all_regs(regs[i].regmap);
5234   }else{
5235     load_all_regs(branch_regs[i].regmap);
5236   }
5237   emit_jmp(stubs[n][2]); // return address
5238
5239   /* This works but uses a lot of memory...
5240   emit_readword((int)&last_count,ECX);
5241   emit_add(HOST_CCREG,ECX,EAX);
5242   emit_writeword(EAX,(int)&Count);
5243   emit_call((int)gen_interupt);
5244   emit_readword((int)&Count,HOST_CCREG);
5245   emit_readword((int)&next_interupt,EAX);
5246   emit_readword((int)&pending_exception,EBX);
5247   emit_writeword(EAX,(int)&last_count);
5248   emit_sub(HOST_CCREG,EAX,HOST_CCREG);
5249   emit_test(EBX,EBX);
5250   int jne_instr=(int)out;
5251   emit_jne(0);
5252   if(stubs[n][3]) emit_addimm(HOST_CCREG,-2*stubs[n][3],HOST_CCREG);
5253   load_all_regs(branch_regs[i].regmap);
5254   emit_jmp(stubs[n][2]); // return address
5255   set_jump_target(jne_instr,(int)out);
5256   emit_readword((int)&pcaddr,EAX);
5257   // Call get_addr_ht instead of doing the hash table here.
5258   // This code is executed infrequently and takes up a lot of space
5259   // so smaller is better.
5260   emit_storereg(CCREG,HOST_CCREG);
5261   emit_pushreg(EAX);
5262   emit_call((int)get_addr_ht);
5263   emit_loadreg(CCREG,HOST_CCREG);
5264   emit_addimm(ESP,4,ESP);
5265   emit_jmpreg(EAX);*/
5266 }
5267
5268 add_to_linker(int addr,int target,int ext)
5269 {
5270   link_addr[linkcount][0]=addr;
5271   link_addr[linkcount][1]=target;
5272   link_addr[linkcount][2]=ext;
5273   linkcount++;
5274 }
5275
5276 static void ujump_assemble_write_ra(int i)
5277 {
5278   int rt;
5279   unsigned int return_address;
5280   rt=get_reg(branch_regs[i].regmap,31);
5281   assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
5282   //assert(rt>=0);
5283   return_address=start+i*4+8;
5284   if(rt>=0) {
5285     #ifdef USE_MINI_HT
5286     if(internal_branch(branch_regs[i].is32,return_address)&&rt1[i+1]!=31) {
5287       int temp=-1; // note: must be ds-safe
5288       #ifdef HOST_TEMPREG
5289       temp=HOST_TEMPREG;
5290       #endif
5291       if(temp>=0) do_miniht_insert(return_address,rt,temp);
5292       else emit_movimm(return_address,rt);
5293     }
5294     else
5295     #endif
5296     {
5297       #ifdef REG_PREFETCH
5298       if(temp>=0)
5299       {
5300         if(i_regmap[temp]!=PTEMP) emit_movimm((int)hash_table[((return_address>>16)^return_address)&0xFFFF],temp);
5301       }
5302       #endif
5303       emit_movimm(return_address,rt); // PC into link register
5304       #ifdef IMM_PREFETCH
5305       emit_prefetch(hash_table[((return_address>>16)^return_address)&0xFFFF]);
5306       #endif
5307     }
5308   }
5309 }
5310
5311 void ujump_assemble(int i,struct regstat *i_regs)
5312 {
5313   signed char *i_regmap=i_regs->regmap;
5314   int ra_done=0;
5315   if(i==(ba[i]-start)>>2) assem_debug("idle loop\n");
5316   address_generation(i+1,i_regs,regs[i].regmap_entry);
5317   #ifdef REG_PREFETCH
5318   int temp=get_reg(branch_regs[i].regmap,PTEMP);
5319   if(rt1[i]==31&&temp>=0)
5320   {
5321     int return_address=start+i*4+8;
5322     if(get_reg(branch_regs[i].regmap,31)>0)
5323     if(i_regmap[temp]==PTEMP) emit_movimm((int)hash_table[((return_address>>16)^return_address)&0xFFFF],temp);
5324   }
5325   #endif
5326   if(rt1[i]==31&&(rt1[i]==rs1[i+1]||rt1[i]==rs2[i+1])) {
5327     ujump_assemble_write_ra(i); // writeback ra for DS
5328     ra_done=1;
5329   }
5330   ds_assemble(i+1,i_regs);
5331   uint64_t bc_unneeded=branch_regs[i].u;
5332   uint64_t bc_unneeded_upper=branch_regs[i].uu;
5333   bc_unneeded|=1|(1LL<<rt1[i]);
5334   bc_unneeded_upper|=1|(1LL<<rt1[i]);
5335   wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5336                 bc_unneeded,bc_unneeded_upper);
5337   load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
5338   if(!ra_done&&rt1[i]==31)
5339     ujump_assemble_write_ra(i);
5340   int cc,adj;
5341   cc=get_reg(branch_regs[i].regmap,CCREG);
5342   assert(cc==HOST_CCREG);
5343   store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5344   #ifdef REG_PREFETCH
5345   if(rt1[i]==31&&temp>=0) emit_prefetchreg(temp);
5346   #endif
5347   do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0);
5348   if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
5349   load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5350   if(internal_branch(branch_regs[i].is32,ba[i]))
5351     assem_debug("branch: internal\n");
5352   else
5353     assem_debug("branch: external\n");
5354   if(internal_branch(branch_regs[i].is32,ba[i])&&is_ds[(ba[i]-start)>>2]) {
5355     ds_assemble_entry(i);
5356   }
5357   else {
5358     add_to_linker((int)out,ba[i],internal_branch(branch_regs[i].is32,ba[i]));
5359     emit_jmp(0);
5360   }
5361 }
5362
5363 static void rjump_assemble_write_ra(int i)
5364 {
5365   int rt,return_address;
5366   assert(rt1[i+1]!=rt1[i]);
5367   assert(rt2[i+1]!=rt1[i]);
5368   rt=get_reg(branch_regs[i].regmap,rt1[i]);
5369   assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
5370   assert(rt>=0);
5371   return_address=start+i*4+8;
5372   #ifdef REG_PREFETCH
5373   if(temp>=0)
5374   {
5375     if(i_regmap[temp]!=PTEMP) emit_movimm((int)hash_table[((return_address>>16)^return_address)&0xFFFF],temp);
5376   }
5377   #endif
5378   emit_movimm(return_address,rt); // PC into link register
5379   #ifdef IMM_PREFETCH
5380   emit_prefetch(hash_table[((return_address>>16)^return_address)&0xFFFF]);
5381   #endif
5382 }
5383
5384 void rjump_assemble(int i,struct regstat *i_regs)
5385 {
5386   signed char *i_regmap=i_regs->regmap;
5387   int temp;
5388   int rs,cc,adj;
5389   int ra_done=0;
5390   rs=get_reg(branch_regs[i].regmap,rs1[i]);
5391   assert(rs>=0);
5392   if(rs1[i]==rt1[i+1]||rs1[i]==rt2[i+1]) {
5393     // Delay slot abuse, make a copy of the branch address register
5394     temp=get_reg(branch_regs[i].regmap,RTEMP);
5395     assert(temp>=0);
5396     assert(regs[i].regmap[temp]==RTEMP);
5397     emit_mov(rs,temp);
5398     rs=temp;
5399   }
5400   address_generation(i+1,i_regs,regs[i].regmap_entry);
5401   #ifdef REG_PREFETCH
5402   if(rt1[i]==31)
5403   {
5404     if((temp=get_reg(branch_regs[i].regmap,PTEMP))>=0) {
5405       int return_address=start+i*4+8;
5406       if(i_regmap[temp]==PTEMP) emit_movimm((int)hash_table[((return_address>>16)^return_address)&0xFFFF],temp);
5407     }
5408   }
5409   #endif
5410   #ifdef USE_MINI_HT
5411   if(rs1[i]==31) {
5412     int rh=get_reg(regs[i].regmap,RHASH);
5413     if(rh>=0) do_preload_rhash(rh);
5414   }
5415   #endif
5416   if(rt1[i]!=0&&(rt1[i]==rs1[i+1]||rt1[i]==rs2[i+1])) {
5417     rjump_assemble_write_ra(i);
5418     ra_done=1;
5419   }
5420   ds_assemble(i+1,i_regs);
5421   uint64_t bc_unneeded=branch_regs[i].u;
5422   uint64_t bc_unneeded_upper=branch_regs[i].uu;
5423   bc_unneeded|=1|(1LL<<rt1[i]);
5424   bc_unneeded_upper|=1|(1LL<<rt1[i]);
5425   bc_unneeded&=~(1LL<<rs1[i]);
5426   wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5427                 bc_unneeded,bc_unneeded_upper);
5428   load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i],CCREG);
5429   if(!ra_done&&rt1[i]!=0)
5430     rjump_assemble_write_ra(i);
5431   cc=get_reg(branch_regs[i].regmap,CCREG);
5432   assert(cc==HOST_CCREG);
5433   #ifdef USE_MINI_HT
5434   int rh=get_reg(branch_regs[i].regmap,RHASH);
5435   int ht=get_reg(branch_regs[i].regmap,RHTBL);
5436   if(rs1[i]==31) {
5437     if(regs[i].regmap[rh]!=RHASH) do_preload_rhash(rh);
5438     do_preload_rhtbl(ht);
5439     do_rhash(rs,rh);
5440   }
5441   #endif
5442   store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,-1);
5443   #ifdef DESTRUCTIVE_WRITEBACK
5444   if((branch_regs[i].dirty>>rs)&(branch_regs[i].is32>>rs1[i])&1) {
5445     if(rs1[i]!=rt1[i+1]&&rs1[i]!=rt2[i+1]) {
5446       emit_loadreg(rs1[i],rs);
5447     }
5448   }
5449   #endif
5450   #ifdef REG_PREFETCH
5451   if(rt1[i]==31&&temp>=0) emit_prefetchreg(temp);
5452   #endif
5453   #ifdef USE_MINI_HT
5454   if(rs1[i]==31) {
5455     do_miniht_load(ht,rh);
5456   }
5457   #endif
5458   //do_cc(i,branch_regs[i].regmap,&adj,-1,TAKEN);
5459   //if(adj) emit_addimm(cc,2*(ccadj[i]+2-adj),cc); // ??? - Shouldn't happen
5460   //assert(adj==0);
5461   emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),HOST_CCREG);
5462   add_stub(CC_STUB,(int)out,jump_vaddr_reg[rs],0,i,-1,TAKEN,0);
5463 #ifdef PCSX
5464   if(itype[i+1]==COP0&&(source[i+1]&0x3f)==0x10)
5465     // special case for RFE
5466     emit_jmp(0);
5467   else
5468 #endif
5469   emit_jns(0);
5470   //load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,-1);
5471   #ifdef USE_MINI_HT
5472   if(rs1[i]==31) {
5473     do_miniht_jump(rs,rh,ht);
5474   }
5475   else
5476   #endif
5477   {
5478     //if(rs!=EAX) emit_mov(rs,EAX);
5479     //emit_jmp((int)jump_vaddr_eax);
5480     emit_jmp(jump_vaddr_reg[rs]);
5481   }
5482   /* Check hash table
5483   temp=!rs;
5484   emit_mov(rs,temp);
5485   emit_shrimm(rs,16,rs);
5486   emit_xor(temp,rs,rs);
5487   emit_movzwl_reg(rs,rs);
5488   emit_shlimm(rs,4,rs);
5489   emit_cmpmem_indexed((int)hash_table,rs,temp);
5490   emit_jne((int)out+14);
5491   emit_readword_indexed((int)hash_table+4,rs,rs);
5492   emit_jmpreg(rs);
5493   emit_cmpmem_indexed((int)hash_table+8,rs,temp);
5494   emit_addimm_no_flags(8,rs);
5495   emit_jeq((int)out-17);
5496   // No hit on hash table, call compiler
5497   emit_pushreg(temp);
5498 //DEBUG >
5499 #ifdef DEBUG_CYCLE_COUNT
5500   emit_readword((int)&last_count,ECX);
5501   emit_add(HOST_CCREG,ECX,HOST_CCREG);
5502   emit_readword((int)&next_interupt,ECX);
5503   emit_writeword(HOST_CCREG,(int)&Count);
5504   emit_sub(HOST_CCREG,ECX,HOST_CCREG);
5505   emit_writeword(ECX,(int)&last_count);
5506 #endif
5507 //DEBUG <
5508   emit_storereg(CCREG,HOST_CCREG);
5509   emit_call((int)get_addr);
5510   emit_loadreg(CCREG,HOST_CCREG);
5511   emit_addimm(ESP,4,ESP);
5512   emit_jmpreg(EAX);*/
5513   #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5514   if(rt1[i]!=31&&i<slen-2&&(((u_int)out)&7)) emit_mov(13,13);
5515   #endif
5516 }
5517
5518 void cjump_assemble(int i,struct regstat *i_regs)
5519 {
5520   signed char *i_regmap=i_regs->regmap;
5521   int cc;
5522   int match;
5523   match=match_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5524   assem_debug("match=%d\n",match);
5525   int s1h,s1l,s2h,s2l;
5526   int prev_cop1_usable=cop1_usable;
5527   int unconditional=0,nop=0;
5528   int only32=0;
5529   int invert=0;
5530   int internal=internal_branch(branch_regs[i].is32,ba[i]);
5531   if(i==(ba[i]-start)>>2) assem_debug("idle loop\n");
5532   if(!match) invert=1;
5533   #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5534   if(i>(ba[i]-start)>>2) invert=1;
5535   #endif
5536
5537   if(ooo[i]) {
5538     s1l=get_reg(branch_regs[i].regmap,rs1[i]);
5539     s1h=get_reg(branch_regs[i].regmap,rs1[i]|64);
5540     s2l=get_reg(branch_regs[i].regmap,rs2[i]);
5541     s2h=get_reg(branch_regs[i].regmap,rs2[i]|64);
5542   }
5543   else {
5544     s1l=get_reg(i_regmap,rs1[i]);
5545     s1h=get_reg(i_regmap,rs1[i]|64);
5546     s2l=get_reg(i_regmap,rs2[i]);
5547     s2h=get_reg(i_regmap,rs2[i]|64);
5548   }
5549   if(rs1[i]==0&&rs2[i]==0)
5550   {
5551     if(opcode[i]&1) nop=1;
5552     else unconditional=1;
5553     //assert(opcode[i]!=5);
5554     //assert(opcode[i]!=7);
5555     //assert(opcode[i]!=0x15);
5556     //assert(opcode[i]!=0x17);
5557   }
5558   else if(rs1[i]==0)
5559   {
5560     s1l=s2l;s1h=s2h;
5561     s2l=s2h=-1;
5562     only32=(regs[i].was32>>rs2[i])&1;
5563   }
5564   else if(rs2[i]==0)
5565   {
5566     s2l=s2h=-1;
5567     only32=(regs[i].was32>>rs1[i])&1;
5568   }
5569   else {
5570     only32=(regs[i].was32>>rs1[i])&(regs[i].was32>>rs2[i])&1;
5571   }
5572
5573   if(ooo[i]) {
5574     // Out of order execution (delay slot first)
5575     //printf("OOOE\n");
5576     address_generation(i+1,i_regs,regs[i].regmap_entry);
5577     ds_assemble(i+1,i_regs);
5578     int adj;
5579     uint64_t bc_unneeded=branch_regs[i].u;
5580     uint64_t bc_unneeded_upper=branch_regs[i].uu;
5581     bc_unneeded&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
5582     bc_unneeded_upper&=~((1LL<<us1[i])|(1LL<<us2[i]));
5583     bc_unneeded|=1;
5584     bc_unneeded_upper|=1;
5585     wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5586                   bc_unneeded,bc_unneeded_upper);
5587     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i],rs2[i]);
5588     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
5589     cc=get_reg(branch_regs[i].regmap,CCREG);
5590     assert(cc==HOST_CCREG);
5591     if(unconditional)
5592       store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5593     //do_cc(i,branch_regs[i].regmap,&adj,unconditional?ba[i]:-1,unconditional);
5594     //assem_debug("cycle count (adj)\n");
5595     if(unconditional) {
5596       do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0);
5597       if(i!=(ba[i]-start)>>2 || source[i+1]!=0) {
5598         if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
5599         load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5600         if(internal)
5601           assem_debug("branch: internal\n");
5602         else
5603           assem_debug("branch: external\n");
5604         if(internal&&is_ds[(ba[i]-start)>>2]) {
5605           ds_assemble_entry(i);
5606         }
5607         else {
5608           add_to_linker((int)out,ba[i],internal);
5609           emit_jmp(0);
5610         }
5611         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5612         if(((u_int)out)&7) emit_addnop(0);
5613         #endif
5614       }
5615     }
5616     else if(nop) {
5617       emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),cc);
5618       int jaddr=(int)out;
5619       emit_jns(0);
5620       add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,NOTTAKEN,0);
5621     }
5622     else {
5623       int taken=0,nottaken=0,nottaken1=0;
5624       do_cc(i,branch_regs[i].regmap,&adj,-1,0,invert);
5625       if(adj&&!invert) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
5626       if(!only32)
5627       {
5628         assert(s1h>=0);
5629         if(opcode[i]==4) // BEQ
5630         {
5631           if(s2h>=0) emit_cmp(s1h,s2h);
5632           else emit_test(s1h,s1h);
5633           nottaken1=(int)out;
5634           emit_jne(1);
5635         }
5636         if(opcode[i]==5) // BNE
5637         {
5638           if(s2h>=0) emit_cmp(s1h,s2h);
5639           else emit_test(s1h,s1h);
5640           if(invert) taken=(int)out;
5641           else add_to_linker((int)out,ba[i],internal);
5642           emit_jne(0);
5643         }
5644         if(opcode[i]==6) // BLEZ
5645         {
5646           emit_test(s1h,s1h);
5647           if(invert) taken=(int)out;
5648           else add_to_linker((int)out,ba[i],internal);
5649           emit_js(0);
5650           nottaken1=(int)out;
5651           emit_jne(1);
5652         }
5653         if(opcode[i]==7) // BGTZ
5654         {
5655           emit_test(s1h,s1h);
5656           nottaken1=(int)out;
5657           emit_js(1);
5658           if(invert) taken=(int)out;
5659           else add_to_linker((int)out,ba[i],internal);
5660           emit_jne(0);
5661         }
5662       } // if(!only32)
5663
5664       //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
5665       assert(s1l>=0);
5666       if(opcode[i]==4) // BEQ
5667       {
5668         if(s2l>=0) emit_cmp(s1l,s2l);
5669         else emit_test(s1l,s1l);
5670         if(invert){
5671           nottaken=(int)out;
5672           emit_jne(1);
5673         }else{
5674           add_to_linker((int)out,ba[i],internal);
5675           emit_jeq(0);
5676         }
5677       }
5678       if(opcode[i]==5) // BNE
5679       {
5680         if(s2l>=0) emit_cmp(s1l,s2l);
5681         else emit_test(s1l,s1l);
5682         if(invert){
5683           nottaken=(int)out;
5684           emit_jeq(1);
5685         }else{
5686           add_to_linker((int)out,ba[i],internal);
5687           emit_jne(0);
5688         }
5689       }
5690       if(opcode[i]==6) // BLEZ
5691       {
5692         emit_cmpimm(s1l,1);
5693         if(invert){
5694           nottaken=(int)out;
5695           emit_jge(1);
5696         }else{
5697           add_to_linker((int)out,ba[i],internal);
5698           emit_jl(0);
5699         }
5700       }
5701       if(opcode[i]==7) // BGTZ
5702       {
5703         emit_cmpimm(s1l,1);
5704         if(invert){
5705           nottaken=(int)out;
5706           emit_jl(1);
5707         }else{
5708           add_to_linker((int)out,ba[i],internal);
5709           emit_jge(0);
5710         }
5711       }
5712       if(invert) {
5713         if(taken) set_jump_target(taken,(int)out);
5714         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5715         if(match&&(!internal||!is_ds[(ba[i]-start)>>2])) {
5716           if(adj) {
5717             emit_addimm(cc,-CLOCK_ADJUST(adj),cc);
5718             add_to_linker((int)out,ba[i],internal);
5719           }else{
5720             emit_addnop(13);
5721             add_to_linker((int)out,ba[i],internal*2);
5722           }
5723           emit_jmp(0);
5724         }else
5725         #endif
5726         {
5727           if(adj) emit_addimm(cc,-CLOCK_ADJUST(adj),cc);
5728           store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5729           load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5730           if(internal)
5731             assem_debug("branch: internal\n");
5732           else
5733             assem_debug("branch: external\n");
5734           if(internal&&is_ds[(ba[i]-start)>>2]) {
5735             ds_assemble_entry(i);
5736           }
5737           else {
5738             add_to_linker((int)out,ba[i],internal);
5739             emit_jmp(0);
5740           }
5741         }
5742         set_jump_target(nottaken,(int)out);
5743       }
5744
5745       if(nottaken1) set_jump_target(nottaken1,(int)out);
5746       if(adj) {
5747         if(!invert) emit_addimm(cc,CLOCK_ADJUST(adj),cc);
5748       }
5749     } // (!unconditional)
5750   } // if(ooo)
5751   else
5752   {
5753     // In-order execution (branch first)
5754     //if(likely[i]) printf("IOL\n");
5755     //else
5756     //printf("IOE\n");
5757     int taken=0,nottaken=0,nottaken1=0;
5758     if(!unconditional&&!nop) {
5759       if(!only32)
5760       {
5761         assert(s1h>=0);
5762         if((opcode[i]&0x2f)==4) // BEQ
5763         {
5764           if(s2h>=0) emit_cmp(s1h,s2h);
5765           else emit_test(s1h,s1h);
5766           nottaken1=(int)out;
5767           emit_jne(2);
5768         }
5769         if((opcode[i]&0x2f)==5) // BNE
5770         {
5771           if(s2h>=0) emit_cmp(s1h,s2h);
5772           else emit_test(s1h,s1h);
5773           taken=(int)out;
5774           emit_jne(1);
5775         }
5776         if((opcode[i]&0x2f)==6) // BLEZ
5777         {
5778           emit_test(s1h,s1h);
5779           taken=(int)out;
5780           emit_js(1);
5781           nottaken1=(int)out;
5782           emit_jne(2);
5783         }
5784         if((opcode[i]&0x2f)==7) // BGTZ
5785         {
5786           emit_test(s1h,s1h);
5787           nottaken1=(int)out;
5788           emit_js(2);
5789           taken=(int)out;
5790           emit_jne(1);
5791         }
5792       } // if(!only32)
5793
5794       //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
5795       assert(s1l>=0);
5796       if((opcode[i]&0x2f)==4) // BEQ
5797       {
5798         if(s2l>=0) emit_cmp(s1l,s2l);
5799         else emit_test(s1l,s1l);
5800         nottaken=(int)out;
5801         emit_jne(2);
5802       }
5803       if((opcode[i]&0x2f)==5) // BNE
5804       {
5805         if(s2l>=0) emit_cmp(s1l,s2l);
5806         else emit_test(s1l,s1l);
5807         nottaken=(int)out;
5808         emit_jeq(2);
5809       }
5810       if((opcode[i]&0x2f)==6) // BLEZ
5811       {
5812         emit_cmpimm(s1l,1);
5813         nottaken=(int)out;
5814         emit_jge(2);
5815       }
5816       if((opcode[i]&0x2f)==7) // BGTZ
5817       {
5818         emit_cmpimm(s1l,1);
5819         nottaken=(int)out;
5820         emit_jl(2);
5821       }
5822     } // if(!unconditional)
5823     int adj;
5824     uint64_t ds_unneeded=branch_regs[i].u;
5825     uint64_t ds_unneeded_upper=branch_regs[i].uu;
5826     ds_unneeded&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
5827     ds_unneeded_upper&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
5828     if((~ds_unneeded_upper>>rt1[i+1])&1) ds_unneeded_upper&=~((1LL<<dep1[i+1])|(1LL<<dep2[i+1]));
5829     ds_unneeded|=1;
5830     ds_unneeded_upper|=1;
5831     // branch taken
5832     if(!nop) {
5833       if(taken) set_jump_target(taken,(int)out);
5834       assem_debug("1:\n");
5835       wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5836                     ds_unneeded,ds_unneeded_upper);
5837       // load regs
5838       load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
5839       address_generation(i+1,&branch_regs[i],0);
5840       load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,INVCP);
5841       ds_assemble(i+1,&branch_regs[i]);
5842       cc=get_reg(branch_regs[i].regmap,CCREG);
5843       if(cc==-1) {
5844         emit_loadreg(CCREG,cc=HOST_CCREG);
5845         // CHECK: Is the following instruction (fall thru) allocated ok?
5846       }
5847       assert(cc==HOST_CCREG);
5848       store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5849       do_cc(i,i_regmap,&adj,ba[i],TAKEN,0);
5850       assem_debug("cycle count (adj)\n");
5851       if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
5852       load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5853       if(internal)
5854         assem_debug("branch: internal\n");
5855       else
5856         assem_debug("branch: external\n");
5857       if(internal&&is_ds[(ba[i]-start)>>2]) {
5858         ds_assemble_entry(i);
5859       }
5860       else {
5861         add_to_linker((int)out,ba[i],internal);
5862         emit_jmp(0);
5863       }
5864     }
5865     // branch not taken
5866     cop1_usable=prev_cop1_usable;
5867     if(!unconditional) {
5868       if(nottaken1) set_jump_target(nottaken1,(int)out);
5869       set_jump_target(nottaken,(int)out);
5870       assem_debug("2:\n");
5871       if(!likely[i]) {
5872         wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5873                       ds_unneeded,ds_unneeded_upper);
5874         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
5875         address_generation(i+1,&branch_regs[i],0);
5876         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
5877         ds_assemble(i+1,&branch_regs[i]);
5878       }
5879       cc=get_reg(branch_regs[i].regmap,CCREG);
5880       if(cc==-1&&!likely[i]) {
5881         // Cycle count isn't in a register, temporarily load it then write it out
5882         emit_loadreg(CCREG,HOST_CCREG);
5883         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),HOST_CCREG);
5884         int jaddr=(int)out;
5885         emit_jns(0);
5886         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,NOTTAKEN,0);
5887         emit_storereg(CCREG,HOST_CCREG);
5888       }
5889       else{
5890         cc=get_reg(i_regmap,CCREG);
5891         assert(cc==HOST_CCREG);
5892         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),cc);
5893         int jaddr=(int)out;
5894         emit_jns(0);
5895         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,likely[i]?NULLDS:NOTTAKEN,0);
5896       }
5897     }
5898   }
5899 }
5900
5901 void sjump_assemble(int i,struct regstat *i_regs)
5902 {
5903   signed char *i_regmap=i_regs->regmap;
5904   int cc;
5905   int match;
5906   match=match_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5907   assem_debug("smatch=%d\n",match);
5908   int s1h,s1l;
5909   int prev_cop1_usable=cop1_usable;
5910   int unconditional=0,nevertaken=0;
5911   int only32=0;
5912   int invert=0;
5913   int internal=internal_branch(branch_regs[i].is32,ba[i]);
5914   if(i==(ba[i]-start)>>2) assem_debug("idle loop\n");
5915   if(!match) invert=1;
5916   #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5917   if(i>(ba[i]-start)>>2) invert=1;
5918   #endif
5919
5920   //if(opcode2[i]>=0x10) return; // FIXME (BxxZAL)
5921   //assert(opcode2[i]<0x10||rs1[i]==0); // FIXME (BxxZAL)
5922
5923   if(ooo[i]) {
5924     s1l=get_reg(branch_regs[i].regmap,rs1[i]);
5925     s1h=get_reg(branch_regs[i].regmap,rs1[i]|64);
5926   }
5927   else {
5928     s1l=get_reg(i_regmap,rs1[i]);
5929     s1h=get_reg(i_regmap,rs1[i]|64);
5930   }
5931   if(rs1[i]==0)
5932   {
5933     if(opcode2[i]&1) unconditional=1;
5934     else nevertaken=1;
5935     // These are never taken (r0 is never less than zero)
5936     //assert(opcode2[i]!=0);
5937     //assert(opcode2[i]!=2);
5938     //assert(opcode2[i]!=0x10);
5939     //assert(opcode2[i]!=0x12);
5940   }
5941   else {
5942     only32=(regs[i].was32>>rs1[i])&1;
5943   }
5944
5945   if(ooo[i]) {
5946     // Out of order execution (delay slot first)
5947     //printf("OOOE\n");
5948     address_generation(i+1,i_regs,regs[i].regmap_entry);
5949     ds_assemble(i+1,i_regs);
5950     int adj;
5951     uint64_t bc_unneeded=branch_regs[i].u;
5952     uint64_t bc_unneeded_upper=branch_regs[i].uu;
5953     bc_unneeded&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
5954     bc_unneeded_upper&=~((1LL<<us1[i])|(1LL<<us2[i]));
5955     bc_unneeded|=1;
5956     bc_unneeded_upper|=1;
5957     wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
5958                   bc_unneeded,bc_unneeded_upper);
5959     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i],rs1[i]);
5960     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
5961     if(rt1[i]==31) {
5962       int rt,return_address;
5963       rt=get_reg(branch_regs[i].regmap,31);
5964       assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
5965       if(rt>=0) {
5966         // Save the PC even if the branch is not taken
5967         return_address=start+i*4+8;
5968         emit_movimm(return_address,rt); // PC into link register
5969         #ifdef IMM_PREFETCH
5970         if(!nevertaken) emit_prefetch(hash_table[((return_address>>16)^return_address)&0xFFFF]);
5971         #endif
5972       }
5973     }
5974     cc=get_reg(branch_regs[i].regmap,CCREG);
5975     assert(cc==HOST_CCREG);
5976     if(unconditional)
5977       store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5978     //do_cc(i,branch_regs[i].regmap,&adj,unconditional?ba[i]:-1,unconditional);
5979     assem_debug("cycle count (adj)\n");
5980     if(unconditional) {
5981       do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0);
5982       if(i!=(ba[i]-start)>>2 || source[i+1]!=0) {
5983         if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
5984         load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
5985         if(internal)
5986           assem_debug("branch: internal\n");
5987         else
5988           assem_debug("branch: external\n");
5989         if(internal&&is_ds[(ba[i]-start)>>2]) {
5990           ds_assemble_entry(i);
5991         }
5992         else {
5993           add_to_linker((int)out,ba[i],internal);
5994           emit_jmp(0);
5995         }
5996         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
5997         if(((u_int)out)&7) emit_addnop(0);
5998         #endif
5999       }
6000     }
6001     else if(nevertaken) {
6002       emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),cc);
6003       int jaddr=(int)out;
6004       emit_jns(0);
6005       add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,NOTTAKEN,0);
6006     }
6007     else {
6008       int nottaken=0;
6009       do_cc(i,branch_regs[i].regmap,&adj,-1,0,invert);
6010       if(adj&&!invert) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
6011       if(!only32)
6012       {
6013         assert(s1h>=0);
6014         if((opcode2[i]&0xf)==0) // BLTZ/BLTZAL
6015         {
6016           emit_test(s1h,s1h);
6017           if(invert){
6018             nottaken=(int)out;
6019             emit_jns(1);
6020           }else{
6021             add_to_linker((int)out,ba[i],internal);
6022             emit_js(0);
6023           }
6024         }
6025         if((opcode2[i]&0xf)==1) // BGEZ/BLTZAL
6026         {
6027           emit_test(s1h,s1h);
6028           if(invert){
6029             nottaken=(int)out;
6030             emit_js(1);
6031           }else{
6032             add_to_linker((int)out,ba[i],internal);
6033             emit_jns(0);
6034           }
6035         }
6036       } // if(!only32)
6037       else
6038       {
6039         assert(s1l>=0);
6040         if((opcode2[i]&0xf)==0) // BLTZ/BLTZAL
6041         {
6042           emit_test(s1l,s1l);
6043           if(invert){
6044             nottaken=(int)out;
6045             emit_jns(1);
6046           }else{
6047             add_to_linker((int)out,ba[i],internal);
6048             emit_js(0);
6049           }
6050         }
6051         if((opcode2[i]&0xf)==1) // BGEZ/BLTZAL
6052         {
6053           emit_test(s1l,s1l);
6054           if(invert){
6055             nottaken=(int)out;
6056             emit_js(1);
6057           }else{
6058             add_to_linker((int)out,ba[i],internal);
6059             emit_jns(0);
6060           }
6061         }
6062       } // if(!only32)
6063
6064       if(invert) {
6065         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
6066         if(match&&(!internal||!is_ds[(ba[i]-start)>>2])) {
6067           if(adj) {
6068             emit_addimm(cc,-CLOCK_ADJUST(adj),cc);
6069             add_to_linker((int)out,ba[i],internal);
6070           }else{
6071             emit_addnop(13);
6072             add_to_linker((int)out,ba[i],internal*2);
6073           }
6074           emit_jmp(0);
6075         }else
6076         #endif
6077         {
6078           if(adj) emit_addimm(cc,-CLOCK_ADJUST(adj),cc);
6079           store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6080           load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6081           if(internal)
6082             assem_debug("branch: internal\n");
6083           else
6084             assem_debug("branch: external\n");
6085           if(internal&&is_ds[(ba[i]-start)>>2]) {
6086             ds_assemble_entry(i);
6087           }
6088           else {
6089             add_to_linker((int)out,ba[i],internal);
6090             emit_jmp(0);
6091           }
6092         }
6093         set_jump_target(nottaken,(int)out);
6094       }
6095
6096       if(adj) {
6097         if(!invert) emit_addimm(cc,CLOCK_ADJUST(adj),cc);
6098       }
6099     } // (!unconditional)
6100   } // if(ooo)
6101   else
6102   {
6103     // In-order execution (branch first)
6104     //printf("IOE\n");
6105     int nottaken=0;
6106     if(rt1[i]==31) {
6107       int rt,return_address;
6108       rt=get_reg(branch_regs[i].regmap,31);
6109       if(rt>=0) {
6110         // Save the PC even if the branch is not taken
6111         return_address=start+i*4+8;
6112         emit_movimm(return_address,rt); // PC into link register
6113         #ifdef IMM_PREFETCH
6114         emit_prefetch(hash_table[((return_address>>16)^return_address)&0xFFFF]);
6115         #endif
6116       }
6117     }
6118     if(!unconditional) {
6119       //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
6120       if(!only32)
6121       {
6122         assert(s1h>=0);
6123         if((opcode2[i]&0x0d)==0) // BLTZ/BLTZL/BLTZAL/BLTZALL
6124         {
6125           emit_test(s1h,s1h);
6126           nottaken=(int)out;
6127           emit_jns(1);
6128         }
6129         if((opcode2[i]&0x0d)==1) // BGEZ/BGEZL/BGEZAL/BGEZALL
6130         {
6131           emit_test(s1h,s1h);
6132           nottaken=(int)out;
6133           emit_js(1);
6134         }
6135       } // if(!only32)
6136       else
6137       {
6138         assert(s1l>=0);
6139         if((opcode2[i]&0x0d)==0) // BLTZ/BLTZL/BLTZAL/BLTZALL
6140         {
6141           emit_test(s1l,s1l);
6142           nottaken=(int)out;
6143           emit_jns(1);
6144         }
6145         if((opcode2[i]&0x0d)==1) // BGEZ/BGEZL/BGEZAL/BGEZALL
6146         {
6147           emit_test(s1l,s1l);
6148           nottaken=(int)out;
6149           emit_js(1);
6150         }
6151       }
6152     } // if(!unconditional)
6153     int adj;
6154     uint64_t ds_unneeded=branch_regs[i].u;
6155     uint64_t ds_unneeded_upper=branch_regs[i].uu;
6156     ds_unneeded&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6157     ds_unneeded_upper&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6158     if((~ds_unneeded_upper>>rt1[i+1])&1) ds_unneeded_upper&=~((1LL<<dep1[i+1])|(1LL<<dep2[i+1]));
6159     ds_unneeded|=1;
6160     ds_unneeded_upper|=1;
6161     // branch taken
6162     if(!nevertaken) {
6163       //assem_debug("1:\n");
6164       wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
6165                     ds_unneeded,ds_unneeded_upper);
6166       // load regs
6167       load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
6168       address_generation(i+1,&branch_regs[i],0);
6169       load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,INVCP);
6170       ds_assemble(i+1,&branch_regs[i]);
6171       cc=get_reg(branch_regs[i].regmap,CCREG);
6172       if(cc==-1) {
6173         emit_loadreg(CCREG,cc=HOST_CCREG);
6174         // CHECK: Is the following instruction (fall thru) allocated ok?
6175       }
6176       assert(cc==HOST_CCREG);
6177       store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6178       do_cc(i,i_regmap,&adj,ba[i],TAKEN,0);
6179       assem_debug("cycle count (adj)\n");
6180       if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
6181       load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6182       if(internal)
6183         assem_debug("branch: internal\n");
6184       else
6185         assem_debug("branch: external\n");
6186       if(internal&&is_ds[(ba[i]-start)>>2]) {
6187         ds_assemble_entry(i);
6188       }
6189       else {
6190         add_to_linker((int)out,ba[i],internal);
6191         emit_jmp(0);
6192       }
6193     }
6194     // branch not taken
6195     cop1_usable=prev_cop1_usable;
6196     if(!unconditional) {
6197       set_jump_target(nottaken,(int)out);
6198       assem_debug("1:\n");
6199       if(!likely[i]) {
6200         wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
6201                       ds_unneeded,ds_unneeded_upper);
6202         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
6203         address_generation(i+1,&branch_regs[i],0);
6204         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
6205         ds_assemble(i+1,&branch_regs[i]);
6206       }
6207       cc=get_reg(branch_regs[i].regmap,CCREG);
6208       if(cc==-1&&!likely[i]) {
6209         // Cycle count isn't in a register, temporarily load it then write it out
6210         emit_loadreg(CCREG,HOST_CCREG);
6211         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),HOST_CCREG);
6212         int jaddr=(int)out;
6213         emit_jns(0);
6214         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,NOTTAKEN,0);
6215         emit_storereg(CCREG,HOST_CCREG);
6216       }
6217       else{
6218         cc=get_reg(i_regmap,CCREG);
6219         assert(cc==HOST_CCREG);
6220         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),cc);
6221         int jaddr=(int)out;
6222         emit_jns(0);
6223         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,likely[i]?NULLDS:NOTTAKEN,0);
6224       }
6225     }
6226   }
6227 }
6228
6229 void fjump_assemble(int i,struct regstat *i_regs)
6230 {
6231   signed char *i_regmap=i_regs->regmap;
6232   int cc;
6233   int match;
6234   match=match_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6235   assem_debug("fmatch=%d\n",match);
6236   int fs,cs;
6237   int eaddr;
6238   int invert=0;
6239   int internal=internal_branch(branch_regs[i].is32,ba[i]);
6240   if(i==(ba[i]-start)>>2) assem_debug("idle loop\n");
6241   if(!match) invert=1;
6242   #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
6243   if(i>(ba[i]-start)>>2) invert=1;
6244   #endif
6245
6246   if(ooo[i]) {
6247     fs=get_reg(branch_regs[i].regmap,FSREG);
6248     address_generation(i+1,i_regs,regs[i].regmap_entry); // Is this okay?
6249   }
6250   else {
6251     fs=get_reg(i_regmap,FSREG);
6252   }
6253
6254   // Check cop1 unusable
6255   if(!cop1_usable) {
6256     cs=get_reg(i_regmap,CSREG);
6257     assert(cs>=0);
6258     emit_testimm(cs,0x20000000);
6259     eaddr=(int)out;
6260     emit_jeq(0);
6261     add_stub(FP_STUB,eaddr,(int)out,i,cs,(int)i_regs,0,0);
6262     cop1_usable=1;
6263   }
6264
6265   if(ooo[i]) {
6266     // Out of order execution (delay slot first)
6267     //printf("OOOE\n");
6268     ds_assemble(i+1,i_regs);
6269     int adj;
6270     uint64_t bc_unneeded=branch_regs[i].u;
6271     uint64_t bc_unneeded_upper=branch_regs[i].uu;
6272     bc_unneeded&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
6273     bc_unneeded_upper&=~((1LL<<us1[i])|(1LL<<us2[i]));
6274     bc_unneeded|=1;
6275     bc_unneeded_upper|=1;
6276     wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
6277                   bc_unneeded,bc_unneeded_upper);
6278     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i],rs1[i]);
6279     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
6280     cc=get_reg(branch_regs[i].regmap,CCREG);
6281     assert(cc==HOST_CCREG);
6282     do_cc(i,branch_regs[i].regmap,&adj,-1,0,invert);
6283     assem_debug("cycle count (adj)\n");
6284     if(1) {
6285       int nottaken=0;
6286       if(adj&&!invert) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
6287       if(1) {
6288         assert(fs>=0);
6289         emit_testimm(fs,0x800000);
6290         if(source[i]&0x10000) // BC1T
6291         {
6292           if(invert){
6293             nottaken=(int)out;
6294             emit_jeq(1);
6295           }else{
6296             add_to_linker((int)out,ba[i],internal);
6297             emit_jne(0);
6298           }
6299         }
6300         else // BC1F
6301           if(invert){
6302             nottaken=(int)out;
6303             emit_jne(1);
6304           }else{
6305             add_to_linker((int)out,ba[i],internal);
6306             emit_jeq(0);
6307           }
6308         {
6309         }
6310       } // if(!only32)
6311
6312       if(invert) {
6313         if(adj) emit_addimm(cc,-CLOCK_ADJUST(adj),cc);
6314         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
6315         else if(match) emit_addnop(13);
6316         #endif
6317         store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6318         load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6319         if(internal)
6320           assem_debug("branch: internal\n");
6321         else
6322           assem_debug("branch: external\n");
6323         if(internal&&is_ds[(ba[i]-start)>>2]) {
6324           ds_assemble_entry(i);
6325         }
6326         else {
6327           add_to_linker((int)out,ba[i],internal);
6328           emit_jmp(0);
6329         }
6330         set_jump_target(nottaken,(int)out);
6331       }
6332
6333       if(adj) {
6334         if(!invert) emit_addimm(cc,CLOCK_ADJUST(adj),cc);
6335       }
6336     } // (!unconditional)
6337   } // if(ooo)
6338   else
6339   {
6340     // In-order execution (branch first)
6341     //printf("IOE\n");
6342     int nottaken=0;
6343     if(1) {
6344       //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
6345       if(1) {
6346         assert(fs>=0);
6347         emit_testimm(fs,0x800000);
6348         if(source[i]&0x10000) // BC1T
6349         {
6350           nottaken=(int)out;
6351           emit_jeq(1);
6352         }
6353         else // BC1F
6354         {
6355           nottaken=(int)out;
6356           emit_jne(1);
6357         }
6358       }
6359     } // if(!unconditional)
6360     int adj;
6361     uint64_t ds_unneeded=branch_regs[i].u;
6362     uint64_t ds_unneeded_upper=branch_regs[i].uu;
6363     ds_unneeded&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6364     ds_unneeded_upper&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6365     if((~ds_unneeded_upper>>rt1[i+1])&1) ds_unneeded_upper&=~((1LL<<dep1[i+1])|(1LL<<dep2[i+1]));
6366     ds_unneeded|=1;
6367     ds_unneeded_upper|=1;
6368     // branch taken
6369     //assem_debug("1:\n");
6370     wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
6371                   ds_unneeded,ds_unneeded_upper);
6372     // load regs
6373     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
6374     address_generation(i+1,&branch_regs[i],0);
6375     load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,INVCP);
6376     ds_assemble(i+1,&branch_regs[i]);
6377     cc=get_reg(branch_regs[i].regmap,CCREG);
6378     if(cc==-1) {
6379       emit_loadreg(CCREG,cc=HOST_CCREG);
6380       // CHECK: Is the following instruction (fall thru) allocated ok?
6381     }
6382     assert(cc==HOST_CCREG);
6383     store_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6384     do_cc(i,i_regmap,&adj,ba[i],TAKEN,0);
6385     assem_debug("cycle count (adj)\n");
6386     if(adj) emit_addimm(cc,CLOCK_ADJUST(ccadj[i]+2-adj),cc);
6387     load_regs_bt(branch_regs[i].regmap,branch_regs[i].is32,branch_regs[i].dirty,ba[i]);
6388     if(internal)
6389       assem_debug("branch: internal\n");
6390     else
6391       assem_debug("branch: external\n");
6392     if(internal&&is_ds[(ba[i]-start)>>2]) {
6393       ds_assemble_entry(i);
6394     }
6395     else {
6396       add_to_linker((int)out,ba[i],internal);
6397       emit_jmp(0);
6398     }
6399
6400     // branch not taken
6401     if(1) { // <- FIXME (don't need this)
6402       set_jump_target(nottaken,(int)out);
6403       assem_debug("1:\n");
6404       if(!likely[i]) {
6405         wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,regs[i].is32,
6406                       ds_unneeded,ds_unneeded_upper);
6407         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,rs1[i+1],rs2[i+1]);
6408         address_generation(i+1,&branch_regs[i],0);
6409         load_regs(regs[i].regmap,branch_regs[i].regmap,regs[i].was32,CCREG,CCREG);
6410         ds_assemble(i+1,&branch_regs[i]);
6411       }
6412       cc=get_reg(branch_regs[i].regmap,CCREG);
6413       if(cc==-1&&!likely[i]) {
6414         // Cycle count isn't in a register, temporarily load it then write it out
6415         emit_loadreg(CCREG,HOST_CCREG);
6416         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),HOST_CCREG);
6417         int jaddr=(int)out;
6418         emit_jns(0);
6419         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,NOTTAKEN,0);
6420         emit_storereg(CCREG,HOST_CCREG);
6421       }
6422       else{
6423         cc=get_reg(i_regmap,CCREG);
6424         assert(cc==HOST_CCREG);
6425         emit_addimm_and_set_flags(CLOCK_ADJUST(ccadj[i]+2),cc);
6426         int jaddr=(int)out;
6427         emit_jns(0);
6428         add_stub(CC_STUB,jaddr,(int)out,0,i,start+i*4+8,likely[i]?NULLDS:NOTTAKEN,0);
6429       }
6430     }
6431   }
6432 }
6433
6434 static void pagespan_assemble(int i,struct regstat *i_regs)
6435 {
6436   int s1l=get_reg(i_regs->regmap,rs1[i]);
6437   int s1h=get_reg(i_regs->regmap,rs1[i]|64);
6438   int s2l=get_reg(i_regs->regmap,rs2[i]);
6439   int s2h=get_reg(i_regs->regmap,rs2[i]|64);
6440   void *nt_branch=NULL;
6441   int taken=0;
6442   int nottaken=0;
6443   int unconditional=0;
6444   if(rs1[i]==0)
6445   {
6446     s1l=s2l;s1h=s2h;
6447     s2l=s2h=-1;
6448   }
6449   else if(rs2[i]==0)
6450   {
6451     s2l=s2h=-1;
6452   }
6453   if((i_regs->is32>>rs1[i])&(i_regs->is32>>rs2[i])&1) {
6454     s1h=s2h=-1;
6455   }
6456   int hr=0;
6457   int addr,alt,ntaddr;
6458   if(i_regs->regmap[HOST_BTREG]<0) {addr=HOST_BTREG;}
6459   else {
6460     while(hr<HOST_REGS)
6461     {
6462       if(hr!=EXCLUDE_REG && hr!=HOST_CCREG &&
6463          (i_regs->regmap[hr]&63)!=rs1[i] &&
6464          (i_regs->regmap[hr]&63)!=rs2[i] )
6465       {
6466         addr=hr++;break;
6467       }
6468       hr++;
6469     }
6470   }
6471   while(hr<HOST_REGS)
6472   {
6473     if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && hr!=HOST_BTREG &&
6474        (i_regs->regmap[hr]&63)!=rs1[i] &&
6475        (i_regs->regmap[hr]&63)!=rs2[i] )
6476     {
6477       alt=hr++;break;
6478     }
6479     hr++;
6480   }
6481   if((opcode[i]&0x2E)==6) // BLEZ/BGTZ needs another register
6482   {
6483     while(hr<HOST_REGS)
6484     {
6485       if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && hr!=HOST_BTREG &&
6486          (i_regs->regmap[hr]&63)!=rs1[i] &&
6487          (i_regs->regmap[hr]&63)!=rs2[i] )
6488       {
6489         ntaddr=hr;break;
6490       }
6491       hr++;
6492     }
6493   }
6494   assert(hr<HOST_REGS);
6495   if((opcode[i]&0x2e)==4||opcode[i]==0x11) { // BEQ/BNE/BEQL/BNEL/BC1
6496     load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,CCREG,CCREG);
6497   }
6498   emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i]+2),HOST_CCREG);
6499   if(opcode[i]==2) // J
6500   {
6501     unconditional=1;
6502   }
6503   if(opcode[i]==3) // JAL
6504   {
6505     // TODO: mini_ht
6506     int rt=get_reg(i_regs->regmap,31);
6507     emit_movimm(start+i*4+8,rt);
6508     unconditional=1;
6509   }
6510   if(opcode[i]==0&&(opcode2[i]&0x3E)==8) // JR/JALR
6511   {
6512     emit_mov(s1l,addr);
6513     if(opcode2[i]==9) // JALR
6514     {
6515       int rt=get_reg(i_regs->regmap,rt1[i]);
6516       emit_movimm(start+i*4+8,rt);
6517     }
6518   }
6519   if((opcode[i]&0x3f)==4) // BEQ
6520   {
6521     if(rs1[i]==rs2[i])
6522     {
6523       unconditional=1;
6524     }
6525     else
6526     #ifdef HAVE_CMOV_IMM
6527     if(s1h<0) {
6528       if(s2l>=0) emit_cmp(s1l,s2l);
6529       else emit_test(s1l,s1l);
6530       emit_cmov2imm_e_ne_compact(ba[i],start+i*4+8,addr);
6531     }
6532     else
6533     #endif
6534     {
6535       assert(s1l>=0);
6536       emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt);
6537       if(s1h>=0) {
6538         if(s2h>=0) emit_cmp(s1h,s2h);
6539         else emit_test(s1h,s1h);
6540         emit_cmovne_reg(alt,addr);
6541       }
6542       if(s2l>=0) emit_cmp(s1l,s2l);
6543       else emit_test(s1l,s1l);
6544       emit_cmovne_reg(alt,addr);
6545     }
6546   }
6547   if((opcode[i]&0x3f)==5) // BNE
6548   {
6549     #ifdef HAVE_CMOV_IMM
6550     if(s1h<0) {
6551       if(s2l>=0) emit_cmp(s1l,s2l);
6552       else emit_test(s1l,s1l);
6553       emit_cmov2imm_e_ne_compact(start+i*4+8,ba[i],addr);
6554     }
6555     else
6556     #endif
6557     {
6558       assert(s1l>=0);
6559       emit_mov2imm_compact(start+i*4+8,addr,ba[i],alt);
6560       if(s1h>=0) {
6561         if(s2h>=0) emit_cmp(s1h,s2h);
6562         else emit_test(s1h,s1h);
6563         emit_cmovne_reg(alt,addr);
6564       }
6565       if(s2l>=0) emit_cmp(s1l,s2l);
6566       else emit_test(s1l,s1l);
6567       emit_cmovne_reg(alt,addr);
6568     }
6569   }
6570   if((opcode[i]&0x3f)==0x14) // BEQL
6571   {
6572     if(s1h>=0) {
6573       if(s2h>=0) emit_cmp(s1h,s2h);
6574       else emit_test(s1h,s1h);
6575       nottaken=(int)out;
6576       emit_jne(0);
6577     }
6578     if(s2l>=0) emit_cmp(s1l,s2l);
6579     else emit_test(s1l,s1l);
6580     if(nottaken) set_jump_target(nottaken,(int)out);
6581     nottaken=(int)out;
6582     emit_jne(0);
6583   }
6584   if((opcode[i]&0x3f)==0x15) // BNEL
6585   {
6586     if(s1h>=0) {
6587       if(s2h>=0) emit_cmp(s1h,s2h);
6588       else emit_test(s1h,s1h);
6589       taken=(int)out;
6590       emit_jne(0);
6591     }
6592     if(s2l>=0) emit_cmp(s1l,s2l);
6593     else emit_test(s1l,s1l);
6594     nottaken=(int)out;
6595     emit_jeq(0);
6596     if(taken) set_jump_target(taken,(int)out);
6597   }
6598   if((opcode[i]&0x3f)==6) // BLEZ
6599   {
6600     emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr);
6601     emit_cmpimm(s1l,1);
6602     if(s1h>=0) emit_mov(addr,ntaddr);
6603     emit_cmovl_reg(alt,addr);
6604     if(s1h>=0) {
6605       emit_test(s1h,s1h);
6606       emit_cmovne_reg(ntaddr,addr);
6607       emit_cmovs_reg(alt,addr);
6608     }
6609   }
6610   if((opcode[i]&0x3f)==7) // BGTZ
6611   {
6612     emit_mov2imm_compact(ba[i],addr,start+i*4+8,ntaddr);
6613     emit_cmpimm(s1l,1);
6614     if(s1h>=0) emit_mov(addr,alt);
6615     emit_cmovl_reg(ntaddr,addr);
6616     if(s1h>=0) {
6617       emit_test(s1h,s1h);
6618       emit_cmovne_reg(alt,addr);
6619       emit_cmovs_reg(ntaddr,addr);
6620     }
6621   }
6622   if((opcode[i]&0x3f)==0x16) // BLEZL
6623   {
6624     assert((opcode[i]&0x3f)!=0x16);
6625   }
6626   if((opcode[i]&0x3f)==0x17) // BGTZL
6627   {
6628     assert((opcode[i]&0x3f)!=0x17);
6629   }
6630   assert(opcode[i]!=1); // BLTZ/BGEZ
6631
6632   //FIXME: Check CSREG
6633   if(opcode[i]==0x11 && opcode2[i]==0x08 ) {
6634     if((source[i]&0x30000)==0) // BC1F
6635     {
6636       emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt);
6637       emit_testimm(s1l,0x800000);
6638       emit_cmovne_reg(alt,addr);
6639     }
6640     if((source[i]&0x30000)==0x10000) // BC1T
6641     {
6642       emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr);
6643       emit_testimm(s1l,0x800000);
6644       emit_cmovne_reg(alt,addr);
6645     }
6646     if((source[i]&0x30000)==0x20000) // BC1FL
6647     {
6648       emit_testimm(s1l,0x800000);
6649       nottaken=(int)out;
6650       emit_jne(0);
6651     }
6652     if((source[i]&0x30000)==0x30000) // BC1TL
6653     {
6654       emit_testimm(s1l,0x800000);
6655       nottaken=(int)out;
6656       emit_jeq(0);
6657     }
6658   }
6659
6660   assert(i_regs->regmap[HOST_CCREG]==CCREG);
6661   wb_dirtys(regs[i].regmap,regs[i].is32,regs[i].dirty);
6662   if(likely[i]||unconditional)
6663   {
6664     emit_movimm(ba[i],HOST_BTREG);
6665   }
6666   else if(addr!=HOST_BTREG)
6667   {
6668     emit_mov(addr,HOST_BTREG);
6669   }
6670   void *branch_addr=out;
6671   emit_jmp(0);
6672   int target_addr=start+i*4+5;
6673   void *stub=out;
6674   void *compiled_target_addr=check_addr(target_addr);
6675   emit_extjump_ds((int)branch_addr,target_addr);
6676   if(compiled_target_addr) {
6677     set_jump_target((int)branch_addr,(int)compiled_target_addr);
6678     add_link(target_addr,stub);
6679   }
6680   else set_jump_target((int)branch_addr,(int)stub);
6681   if(likely[i]) {
6682     // Not-taken path
6683     set_jump_target((int)nottaken,(int)out);
6684     wb_dirtys(regs[i].regmap,regs[i].is32,regs[i].dirty);
6685     void *branch_addr=out;
6686     emit_jmp(0);
6687     int target_addr=start+i*4+8;
6688     void *stub=out;
6689     void *compiled_target_addr=check_addr(target_addr);
6690     emit_extjump_ds((int)branch_addr,target_addr);
6691     if(compiled_target_addr) {
6692       set_jump_target((int)branch_addr,(int)compiled_target_addr);
6693       add_link(target_addr,stub);
6694     }
6695     else set_jump_target((int)branch_addr,(int)stub);
6696   }
6697 }
6698
6699 // Assemble the delay slot for the above
6700 static void pagespan_ds()
6701 {
6702   assem_debug("initial delay slot:\n");
6703   u_int vaddr=start+1;
6704   u_int page=get_page(vaddr);
6705   u_int vpage=get_vpage(vaddr);
6706   ll_add(jump_dirty+vpage,vaddr,(void *)out);
6707   do_dirty_stub_ds();
6708   ll_add(jump_in+page,vaddr,(void *)out);
6709   assert(regs[0].regmap_entry[HOST_CCREG]==CCREG);
6710   if(regs[0].regmap[HOST_CCREG]!=CCREG)
6711     wb_register(CCREG,regs[0].regmap_entry,regs[0].wasdirty,regs[0].was32);
6712   if(regs[0].regmap[HOST_BTREG]!=BTREG)
6713     emit_writeword(HOST_BTREG,(int)&branch_target);
6714   load_regs(regs[0].regmap_entry,regs[0].regmap,regs[0].was32,rs1[0],rs2[0]);
6715   address_generation(0,&regs[0],regs[0].regmap_entry);
6716   if(itype[0]==STORE||itype[0]==STORELR||(opcode[0]&0x3b)==0x39||(opcode[0]&0x3b)==0x3a)
6717     load_regs(regs[0].regmap_entry,regs[0].regmap,regs[0].was32,INVCP,INVCP);
6718   cop1_usable=0;
6719   is_delayslot=0;
6720   switch(itype[0]) {
6721     case ALU:
6722       alu_assemble(0,&regs[0]);break;
6723     case IMM16:
6724       imm16_assemble(0,&regs[0]);break;
6725     case SHIFT:
6726       shift_assemble(0,&regs[0]);break;
6727     case SHIFTIMM:
6728       shiftimm_assemble(0,&regs[0]);break;
6729     case LOAD:
6730       load_assemble(0,&regs[0]);break;
6731     case LOADLR:
6732       loadlr_assemble(0,&regs[0]);break;
6733     case STORE:
6734       store_assemble(0,&regs[0]);break;
6735     case STORELR:
6736       storelr_assemble(0,&regs[0]);break;
6737     case COP0:
6738       cop0_assemble(0,&regs[0]);break;
6739     case COP1:
6740       cop1_assemble(0,&regs[0]);break;
6741     case C1LS:
6742       c1ls_assemble(0,&regs[0]);break;
6743     case COP2:
6744       cop2_assemble(0,&regs[0]);break;
6745     case C2LS:
6746       c2ls_assemble(0,&regs[0]);break;
6747     case C2OP:
6748       c2op_assemble(0,&regs[0]);break;
6749     case FCONV:
6750       fconv_assemble(0,&regs[0]);break;
6751     case FLOAT:
6752       float_assemble(0,&regs[0]);break;
6753     case FCOMP:
6754       fcomp_assemble(0,&regs[0]);break;
6755     case MULTDIV:
6756       multdiv_assemble(0,&regs[0]);break;
6757     case MOV:
6758       mov_assemble(0,&regs[0]);break;
6759     case SYSCALL:
6760     case HLECALL:
6761     case INTCALL:
6762     case SPAN:
6763     case UJUMP:
6764     case RJUMP:
6765     case CJUMP:
6766     case SJUMP:
6767     case FJUMP:
6768       printf("Jump in the delay slot.  This is probably a bug.\n");
6769   }
6770   int btaddr=get_reg(regs[0].regmap,BTREG);
6771   if(btaddr<0) {
6772     btaddr=get_reg(regs[0].regmap,-1);
6773     emit_readword((int)&branch_target,btaddr);
6774   }
6775   assert(btaddr!=HOST_CCREG);
6776   if(regs[0].regmap[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG);
6777 #ifdef HOST_IMM8
6778   emit_movimm(start+4,HOST_TEMPREG);
6779   emit_cmp(btaddr,HOST_TEMPREG);
6780 #else
6781   emit_cmpimm(btaddr,start+4);
6782 #endif
6783   int branch=(int)out;
6784   emit_jeq(0);
6785   store_regs_bt(regs[0].regmap,regs[0].is32,regs[0].dirty,-1);
6786   emit_jmp(jump_vaddr_reg[btaddr]);
6787   set_jump_target(branch,(int)out);
6788   store_regs_bt(regs[0].regmap,regs[0].is32,regs[0].dirty,start+4);
6789   load_regs_bt(regs[0].regmap,regs[0].is32,regs[0].dirty,start+4);
6790 }
6791
6792 // Basic liveness analysis for MIPS registers
6793 void unneeded_registers(int istart,int iend,int r)
6794 {
6795   int i;
6796   uint64_t u,uu,gte_u,b,bu,gte_bu;
6797   uint64_t temp_u,temp_uu,temp_gte_u=0;
6798   uint64_t tdep;
6799   uint64_t gte_u_unknown=0;
6800   if(new_dynarec_hacks&NDHACK_GTE_UNNEEDED)
6801     gte_u_unknown=~0ll;
6802   if(iend==slen-1) {
6803     u=1;uu=1;
6804     gte_u=gte_u_unknown;
6805   }else{
6806     u=unneeded_reg[iend+1];
6807     uu=unneeded_reg_upper[iend+1];
6808     u=1;uu=1;
6809     gte_u=gte_unneeded[iend+1];
6810   }
6811
6812   for (i=iend;i>=istart;i--)
6813   {
6814     //printf("unneeded registers i=%d (%d,%d) r=%d\n",i,istart,iend,r);
6815     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
6816     {
6817       // If subroutine call, flag return address as a possible branch target
6818       if(rt1[i]==31 && i<slen-2) bt[i+2]=1;
6819
6820       if(ba[i]<start || ba[i]>=(start+slen*4))
6821       {
6822         // Branch out of this block, flush all regs
6823         u=1;
6824         uu=1;
6825         gte_u=gte_u_unknown;
6826         /* Hexagon hack
6827         if(itype[i]==UJUMP&&rt1[i]==31)
6828         {
6829           uu=u=0x300C00F; // Discard at, v0-v1, t6-t9
6830         }
6831         if(itype[i]==RJUMP&&rs1[i]==31)
6832         {
6833           uu=u=0x300C0F3; // Discard at, a0-a3, t6-t9
6834         }
6835         if(start>0x80000400&&start<0x80000000+RAM_SIZE) {
6836           if(itype[i]==UJUMP&&rt1[i]==31)
6837           {
6838             //uu=u=0x30300FF0FLL; // Discard at, v0-v1, t0-t9, lo, hi
6839             uu=u=0x300FF0F; // Discard at, v0-v1, t0-t9
6840           }
6841           if(itype[i]==RJUMP&&rs1[i]==31)
6842           {
6843             //uu=u=0x30300FFF3LL; // Discard at, a0-a3, t0-t9, lo, hi
6844             uu=u=0x300FFF3; // Discard at, a0-a3, t0-t9
6845           }
6846         }*/
6847         branch_unneeded_reg[i]=u;
6848         branch_unneeded_reg_upper[i]=uu;
6849         // Merge in delay slot
6850         tdep=(~uu>>rt1[i+1])&1;
6851         u|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6852         uu|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6853         u&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6854         uu&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6855         uu&=~((tdep<<dep1[i+1])|(tdep<<dep2[i+1]));
6856         u|=1;uu|=1;
6857         gte_u|=gte_rt[i+1];
6858         gte_u&=~gte_rs[i+1];
6859         // If branch is "likely" (and conditional)
6860         // then we skip the delay slot on the fall-thru path
6861         if(likely[i]) {
6862           if(i<slen-1) {
6863             u&=unneeded_reg[i+2];
6864             uu&=unneeded_reg_upper[i+2];
6865             gte_u&=gte_unneeded[i+2];
6866           }
6867           else
6868           {
6869             u=1;
6870             uu=1;
6871             gte_u=gte_u_unknown;
6872           }
6873         }
6874       }
6875       else
6876       {
6877         // Internal branch, flag target
6878         bt[(ba[i]-start)>>2]=1;
6879         if(ba[i]<=start+i*4) {
6880           // Backward branch
6881           if(itype[i]==RJUMP||itype[i]==UJUMP||(source[i]>>16)==0x1000)
6882           {
6883             // Unconditional branch
6884             temp_u=1;temp_uu=1;
6885             temp_gte_u=0;
6886           } else {
6887             // Conditional branch (not taken case)
6888             temp_u=unneeded_reg[i+2];
6889             temp_uu=unneeded_reg_upper[i+2];
6890             temp_gte_u&=gte_unneeded[i+2];
6891           }
6892           // Merge in delay slot
6893           tdep=(~temp_uu>>rt1[i+1])&1;
6894           temp_u|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6895           temp_uu|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6896           temp_u&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6897           temp_uu&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6898           temp_uu&=~((tdep<<dep1[i+1])|(tdep<<dep2[i+1]));
6899           temp_u|=1;temp_uu|=1;
6900           temp_gte_u|=gte_rt[i+1];
6901           temp_gte_u&=~gte_rs[i+1];
6902           // If branch is "likely" (and conditional)
6903           // then we skip the delay slot on the fall-thru path
6904           if(likely[i]) {
6905             if(i<slen-1) {
6906               temp_u&=unneeded_reg[i+2];
6907               temp_uu&=unneeded_reg_upper[i+2];
6908               temp_gte_u&=gte_unneeded[i+2];
6909             }
6910             else
6911             {
6912               temp_u=1;
6913               temp_uu=1;
6914               temp_gte_u=gte_u_unknown;
6915             }
6916           }
6917           tdep=(~temp_uu>>rt1[i])&1;
6918           temp_u|=(1LL<<rt1[i])|(1LL<<rt2[i]);
6919           temp_uu|=(1LL<<rt1[i])|(1LL<<rt2[i]);
6920           temp_u&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
6921           temp_uu&=~((1LL<<us1[i])|(1LL<<us2[i]));
6922           temp_uu&=~((tdep<<dep1[i])|(tdep<<dep2[i]));
6923           temp_u|=1;temp_uu|=1;
6924           temp_gte_u|=gte_rt[i];
6925           temp_gte_u&=~gte_rs[i];
6926           unneeded_reg[i]=temp_u;
6927           unneeded_reg_upper[i]=temp_uu;
6928           gte_unneeded[i]=temp_gte_u;
6929           // Only go three levels deep.  This recursion can take an
6930           // excessive amount of time if there are a lot of nested loops.
6931           if(r<2) {
6932             unneeded_registers((ba[i]-start)>>2,i-1,r+1);
6933           }else{
6934             unneeded_reg[(ba[i]-start)>>2]=1;
6935             unneeded_reg_upper[(ba[i]-start)>>2]=1;
6936             gte_unneeded[(ba[i]-start)>>2]=gte_u_unknown;
6937           }
6938         } /*else*/ if(1) {
6939           if(itype[i]==RJUMP||itype[i]==UJUMP||(source[i]>>16)==0x1000)
6940           {
6941             // Unconditional branch
6942             u=unneeded_reg[(ba[i]-start)>>2];
6943             uu=unneeded_reg_upper[(ba[i]-start)>>2];
6944             gte_u=gte_unneeded[(ba[i]-start)>>2];
6945             branch_unneeded_reg[i]=u;
6946             branch_unneeded_reg_upper[i]=uu;
6947         //u=1;
6948         //uu=1;
6949         //branch_unneeded_reg[i]=u;
6950         //branch_unneeded_reg_upper[i]=uu;
6951             // Merge in delay slot
6952             tdep=(~uu>>rt1[i+1])&1;
6953             u|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6954             uu|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6955             u&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6956             uu&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6957             uu&=~((tdep<<dep1[i+1])|(tdep<<dep2[i+1]));
6958             u|=1;uu|=1;
6959             gte_u|=gte_rt[i+1];
6960             gte_u&=~gte_rs[i+1];
6961           } else {
6962             // Conditional branch
6963             b=unneeded_reg[(ba[i]-start)>>2];
6964             bu=unneeded_reg_upper[(ba[i]-start)>>2];
6965             gte_bu=gte_unneeded[(ba[i]-start)>>2];
6966             branch_unneeded_reg[i]=b;
6967             branch_unneeded_reg_upper[i]=bu;
6968         //b=1;
6969         //bu=1;
6970         //branch_unneeded_reg[i]=b;
6971         //branch_unneeded_reg_upper[i]=bu;
6972             // Branch delay slot
6973             tdep=(~uu>>rt1[i+1])&1;
6974             b|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6975             bu|=(1LL<<rt1[i+1])|(1LL<<rt2[i+1]);
6976             b&=~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
6977             bu&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
6978             bu&=~((tdep<<dep1[i+1])|(tdep<<dep2[i+1]));
6979             b|=1;bu|=1;
6980             gte_bu|=gte_rt[i+1];
6981             gte_bu&=~gte_rs[i+1];
6982             // If branch is "likely" then we skip the
6983             // delay slot on the fall-thru path
6984             if(likely[i]) {
6985               u=b;
6986               uu=bu;
6987               gte_u=gte_bu;
6988               if(i<slen-1) {
6989                 u&=unneeded_reg[i+2];
6990                 uu&=unneeded_reg_upper[i+2];
6991                 gte_u&=gte_unneeded[i+2];
6992         //u=1;
6993         //uu=1;
6994               }
6995             } else {
6996               u&=b;
6997               uu&=bu;
6998               gte_u&=gte_bu;
6999         //u=1;
7000         //uu=1;
7001             }
7002             if(i<slen-1) {
7003               branch_unneeded_reg[i]&=unneeded_reg[i+2];
7004               branch_unneeded_reg_upper[i]&=unneeded_reg_upper[i+2];
7005         //branch_unneeded_reg[i]=1;
7006         //branch_unneeded_reg_upper[i]=1;
7007             } else {
7008               branch_unneeded_reg[i]=1;
7009               branch_unneeded_reg_upper[i]=1;
7010             }
7011           }
7012         }
7013       }
7014     }
7015     else if(itype[i]==SYSCALL||itype[i]==HLECALL||itype[i]==INTCALL)
7016     {
7017       // SYSCALL instruction (software interrupt)
7018       u=1;
7019       uu=1;
7020     }
7021     else if(itype[i]==COP0 && (source[i]&0x3f)==0x18)
7022     {
7023       // ERET instruction (return from interrupt)
7024       u=1;
7025       uu=1;
7026     }
7027     //u=uu=1; // DEBUG
7028     tdep=(~uu>>rt1[i])&1;
7029     // Written registers are unneeded
7030     u|=1LL<<rt1[i];
7031     u|=1LL<<rt2[i];
7032     uu|=1LL<<rt1[i];
7033     uu|=1LL<<rt2[i];
7034     gte_u|=gte_rt[i];
7035     // Accessed registers are needed
7036     u&=~(1LL<<rs1[i]);
7037     u&=~(1LL<<rs2[i]);
7038     uu&=~(1LL<<us1[i]);
7039     uu&=~(1LL<<us2[i]);
7040     gte_u&=~gte_rs[i];
7041     if(gte_rs[i]&&rt1[i]&&(unneeded_reg[i+1]&(1ll<<rt1[i])))
7042       gte_u|=gte_rs[i]&gte_unneeded[i+1]; // MFC2/CFC2 to dead register, unneeded
7043     // Source-target dependencies
7044     uu&=~(tdep<<dep1[i]);
7045     uu&=~(tdep<<dep2[i]);
7046     // R0 is always unneeded
7047     u|=1;uu|=1;
7048     // Save it
7049     unneeded_reg[i]=u;
7050     unneeded_reg_upper[i]=uu;
7051     gte_unneeded[i]=gte_u;
7052     /*
7053     printf("ur (%d,%d) %x: ",istart,iend,start+i*4);
7054     printf("U:");
7055     int r;
7056     for(r=1;r<=CCREG;r++) {
7057       if((unneeded_reg[i]>>r)&1) {
7058         if(r==HIREG) printf(" HI");
7059         else if(r==LOREG) printf(" LO");
7060         else printf(" r%d",r);
7061       }
7062     }
7063     printf(" UU:");
7064     for(r=1;r<=CCREG;r++) {
7065       if(((unneeded_reg_upper[i]&~unneeded_reg[i])>>r)&1) {
7066         if(r==HIREG) printf(" HI");
7067         else if(r==LOREG) printf(" LO");
7068         else printf(" r%d",r);
7069       }
7070     }
7071     printf("\n");*/
7072   }
7073 #ifdef FORCE32
7074   for (i=iend;i>=istart;i--)
7075   {
7076     unneeded_reg_upper[i]=branch_unneeded_reg_upper[i]=-1LL;
7077   }
7078 #endif
7079 }
7080
7081 // Identify registers which are likely to contain 32-bit values
7082 // This is used to predict whether any branches will jump to a
7083 // location with 64-bit values in registers.
7084 static void provisional_32bit()
7085 {
7086   int i,j;
7087   uint64_t is32=1;
7088   uint64_t lastbranch=1;
7089
7090   for(i=0;i<slen;i++)
7091   {
7092     if(i>0) {
7093       if(itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP) {
7094         if(i>1) is32=lastbranch;
7095         else is32=1;
7096       }
7097     }
7098     if(i>1)
7099     {
7100       if(itype[i-2]==CJUMP||itype[i-2]==SJUMP||itype[i-2]==FJUMP) {
7101         if(likely[i-2]) {
7102           if(i>2) is32=lastbranch;
7103           else is32=1;
7104         }
7105       }
7106       if((opcode[i-2]&0x2f)==0x05) // BNE/BNEL
7107       {
7108         if(rs1[i-2]==0||rs2[i-2]==0)
7109         {
7110           if(rs1[i-2]) {
7111             is32|=1LL<<rs1[i-2];
7112           }
7113           if(rs2[i-2]) {
7114             is32|=1LL<<rs2[i-2];
7115           }
7116         }
7117       }
7118     }
7119     // If something jumps here with 64-bit values
7120     // then promote those registers to 64 bits
7121     if(bt[i])
7122     {
7123       uint64_t temp_is32=is32;
7124       for(j=i-1;j>=0;j--)
7125       {
7126         if(ba[j]==start+i*4)
7127           //temp_is32&=branch_regs[j].is32;
7128           temp_is32&=p32[j];
7129       }
7130       for(j=i;j<slen;j++)
7131       {
7132         if(ba[j]==start+i*4)
7133           temp_is32=1;
7134       }
7135       is32=temp_is32;
7136     }
7137     int type=itype[i];
7138     int op=opcode[i];
7139     int op2=opcode2[i];
7140     int rt=rt1[i];
7141     int s1=rs1[i];
7142     int s2=rs2[i];
7143     if(type==UJUMP||type==RJUMP||type==CJUMP||type==SJUMP||type==FJUMP) {
7144       // Branches don't write registers, consider the delay slot instead.
7145       type=itype[i+1];
7146       op=opcode[i+1];
7147       op2=opcode2[i+1];
7148       rt=rt1[i+1];
7149       s1=rs1[i+1];
7150       s2=rs2[i+1];
7151       lastbranch=is32;
7152     }
7153     switch(type) {
7154       case LOAD:
7155         if(opcode[i]==0x27||opcode[i]==0x37|| // LWU/LD
7156            opcode[i]==0x1A||opcode[i]==0x1B) // LDL/LDR
7157           is32&=~(1LL<<rt);
7158         else
7159           is32|=1LL<<rt;
7160         break;
7161       case STORE:
7162       case STORELR:
7163         break;
7164       case LOADLR:
7165         if(op==0x1a||op==0x1b) is32&=~(1LL<<rt); // LDR/LDL
7166         if(op==0x22) is32|=1LL<<rt; // LWL
7167         break;
7168       case IMM16:
7169         if (op==0x08||op==0x09|| // ADDI/ADDIU
7170             op==0x0a||op==0x0b|| // SLTI/SLTIU
7171             op==0x0c|| // ANDI
7172             op==0x0f)  // LUI
7173         {
7174           is32|=1LL<<rt;
7175         }
7176         if(op==0x18||op==0x19) { // DADDI/DADDIU
7177           is32&=~(1LL<<rt);
7178           //if(imm[i]==0)
7179           //  is32|=((is32>>s1)&1LL)<<rt;
7180         }
7181         if(op==0x0d||op==0x0e) { // ORI/XORI
7182           uint64_t sr=((is32>>s1)&1LL);
7183           is32&=~(1LL<<rt);
7184           is32|=sr<<rt;
7185         }
7186         break;
7187       case UJUMP:
7188         break;
7189       case RJUMP:
7190         break;
7191       case CJUMP:
7192         break;
7193       case SJUMP:
7194         break;
7195       case FJUMP:
7196         break;
7197       case ALU:
7198         if(op2>=0x20&&op2<=0x23) { // ADD/ADDU/SUB/SUBU
7199           is32|=1LL<<rt;
7200         }
7201         if(op2==0x2a||op2==0x2b) { // SLT/SLTU
7202           is32|=1LL<<rt;
7203         }
7204         else if(op2>=0x24&&op2<=0x27) { // AND/OR/XOR/NOR
7205           uint64_t sr=((is32>>s1)&(is32>>s2)&1LL);
7206           is32&=~(1LL<<rt);
7207           is32|=sr<<rt;
7208         }
7209         else if(op2>=0x2c&&op2<=0x2d) { // DADD/DADDU
7210           if(s1==0&&s2==0) {
7211             is32|=1LL<<rt;
7212           }
7213           else if(s2==0) {
7214             uint64_t sr=((is32>>s1)&1LL);
7215             is32&=~(1LL<<rt);
7216             is32|=sr<<rt;
7217           }
7218           else if(s1==0) {
7219             uint64_t sr=((is32>>s2)&1LL);
7220             is32&=~(1LL<<rt);
7221             is32|=sr<<rt;
7222           }
7223           else {
7224             is32&=~(1LL<<rt);
7225           }
7226         }
7227         else if(op2>=0x2e&&op2<=0x2f) { // DSUB/DSUBU
7228           if(s1==0&&s2==0) {
7229             is32|=1LL<<rt;
7230           }
7231           else if(s2==0) {
7232             uint64_t sr=((is32>>s1)&1LL);
7233             is32&=~(1LL<<rt);
7234             is32|=sr<<rt;
7235           }
7236           else {
7237             is32&=~(1LL<<rt);
7238           }
7239         }
7240         break;
7241       case MULTDIV:
7242         if (op2>=0x1c&&op2<=0x1f) { // DMULT/DMULTU/DDIV/DDIVU
7243           is32&=~((1LL<<HIREG)|(1LL<<LOREG));
7244         }
7245         else {
7246           is32|=(1LL<<HIREG)|(1LL<<LOREG);
7247         }
7248         break;
7249       case MOV:
7250         {
7251           uint64_t sr=((is32>>s1)&1LL);
7252           is32&=~(1LL<<rt);
7253           is32|=sr<<rt;
7254         }
7255         break;
7256       case SHIFT:
7257         if(op2>=0x14&&op2<=0x17) is32&=~(1LL<<rt); // DSLLV/DSRLV/DSRAV
7258         else is32|=1LL<<rt; // SLLV/SRLV/SRAV
7259         break;
7260       case SHIFTIMM:
7261         is32|=1LL<<rt;
7262         // DSLL/DSRL/DSRA/DSLL32/DSRL32 but not DSRA32 have 64-bit result
7263         if(op2>=0x38&&op2<0x3f) is32&=~(1LL<<rt);
7264         break;
7265       case COP0:
7266         if(op2==0) is32|=1LL<<rt; // MFC0
7267         break;
7268       case COP1:
7269       case COP2:
7270         if(op2==0) is32|=1LL<<rt; // MFC1
7271         if(op2==1) is32&=~(1LL<<rt); // DMFC1
7272         if(op2==2) is32|=1LL<<rt; // CFC1
7273         break;
7274       case C1LS:
7275       case C2LS:
7276         break;
7277       case FLOAT:
7278       case FCONV:
7279         break;
7280       case FCOMP:
7281         break;
7282       case C2OP:
7283       case SYSCALL:
7284       case HLECALL:
7285         break;
7286       default:
7287         break;
7288     }
7289     is32|=1;
7290     p32[i]=is32;
7291
7292     if(i>0)
7293     {
7294       if(itype[i-1]==UJUMP||itype[i-1]==RJUMP||(source[i-1]>>16)==0x1000)
7295       {
7296         if(rt1[i-1]==31) // JAL/JALR
7297         {
7298           // Subroutine call will return here, don't alloc any registers
7299           is32=1;
7300         }
7301         else if(i+1<slen)
7302         {
7303           // Internal branch will jump here, match registers to caller
7304           is32=0x3FFFFFFFFLL;
7305         }
7306       }
7307     }
7308   }
7309 }
7310
7311 // Identify registers which may be assumed to contain 32-bit values
7312 // and where optimizations will rely on this.
7313 // This is used to determine whether backward branches can safely
7314 // jump to a location with 64-bit values in registers.
7315 static void provisional_r32()
7316 {
7317   u_int r32=0;
7318   int i;
7319
7320   for (i=slen-1;i>=0;i--)
7321   {
7322     int hr;
7323     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
7324     {
7325       if(ba[i]<start || ba[i]>=(start+slen*4))
7326       {
7327         // Branch out of this block, don't need anything
7328         r32=0;
7329       }
7330       else
7331       {
7332         // Internal branch
7333         // Need whatever matches the target
7334         // (and doesn't get overwritten by the delay slot instruction)
7335         r32=0;
7336         int t=(ba[i]-start)>>2;
7337         if(ba[i]>start+i*4) {
7338           // Forward branch
7339           //if(!(requires_32bit[t]&~regs[i].was32))
7340           //  r32|=requires_32bit[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
7341           if(!(pr32[t]&~regs[i].was32))
7342             r32|=pr32[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
7343         }else{
7344           // Backward branch
7345           if(!(regs[t].was32&~unneeded_reg_upper[t]&~regs[i].was32))
7346             r32|=regs[t].was32&~unneeded_reg_upper[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
7347         }
7348       }
7349       // Conditional branch may need registers for following instructions
7350       if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000)
7351       {
7352         if(i<slen-2) {
7353           //r32|=requires_32bit[i+2];
7354           r32|=pr32[i+2];
7355           r32&=regs[i].was32;
7356           // Mark this address as a branch target since it may be called
7357           // upon return from interrupt
7358           //bt[i+2]=1;
7359         }
7360       }
7361       // Merge in delay slot
7362       if(!likely[i]) {
7363         // These are overwritten unless the branch is "likely"
7364         // and the delay slot is nullified if not taken
7365         r32&=~(1LL<<rt1[i+1]);
7366         r32&=~(1LL<<rt2[i+1]);
7367       }
7368       // Assume these are needed (delay slot)
7369       if(us1[i+1]>0)
7370       {
7371         if((regs[i].was32>>us1[i+1])&1) r32|=1LL<<us1[i+1];
7372       }
7373       if(us2[i+1]>0)
7374       {
7375         if((regs[i].was32>>us2[i+1])&1) r32|=1LL<<us2[i+1];
7376       }
7377       if(dep1[i+1]&&!((unneeded_reg_upper[i]>>dep1[i+1])&1))
7378       {
7379         if((regs[i].was32>>dep1[i+1])&1) r32|=1LL<<dep1[i+1];
7380       }
7381       if(dep2[i+1]&&!((unneeded_reg_upper[i]>>dep2[i+1])&1))
7382       {
7383         if((regs[i].was32>>dep2[i+1])&1) r32|=1LL<<dep2[i+1];
7384       }
7385     }
7386     else if(itype[i]==SYSCALL||itype[i]==HLECALL||itype[i]==INTCALL)
7387     {
7388       // SYSCALL instruction (software interrupt)
7389       r32=0;
7390     }
7391     else if(itype[i]==COP0 && (source[i]&0x3f)==0x18)
7392     {
7393       // ERET instruction (return from interrupt)
7394       r32=0;
7395     }
7396     // Check 32 bits
7397     r32&=~(1LL<<rt1[i]);
7398     r32&=~(1LL<<rt2[i]);
7399     if(us1[i]>0)
7400     {
7401       if((regs[i].was32>>us1[i])&1) r32|=1LL<<us1[i];
7402     }
7403     if(us2[i]>0)
7404     {
7405       if((regs[i].was32>>us2[i])&1) r32|=1LL<<us2[i];
7406     }
7407     if(dep1[i]&&!((unneeded_reg_upper[i]>>dep1[i])&1))
7408     {
7409       if((regs[i].was32>>dep1[i])&1) r32|=1LL<<dep1[i];
7410     }
7411     if(dep2[i]&&!((unneeded_reg_upper[i]>>dep2[i])&1))
7412     {
7413       if((regs[i].was32>>dep2[i])&1) r32|=1LL<<dep2[i];
7414     }
7415     //requires_32bit[i]=r32;
7416     pr32[i]=r32;
7417
7418     // Dirty registers which are 32-bit, require 32-bit input
7419     // as they will be written as 32-bit values
7420     for(hr=0;hr<HOST_REGS;hr++)
7421     {
7422       if(regs[i].regmap_entry[hr]>0&&regs[i].regmap_entry[hr]<64) {
7423         if((regs[i].was32>>regs[i].regmap_entry[hr])&(regs[i].wasdirty>>hr)&1) {
7424           if(!((unneeded_reg_upper[i]>>regs[i].regmap_entry[hr])&1))
7425           pr32[i]|=1LL<<regs[i].regmap_entry[hr];
7426           //requires_32bit[i]|=1LL<<regs[i].regmap_entry[hr];
7427         }
7428       }
7429     }
7430   }
7431 }
7432
7433 // Write back dirty registers as soon as we will no longer modify them,
7434 // so that we don't end up with lots of writes at the branches.
7435 void clean_registers(int istart,int iend,int wr)
7436 {
7437   int i;
7438   int r;
7439   u_int will_dirty_i,will_dirty_next,temp_will_dirty;
7440   u_int wont_dirty_i,wont_dirty_next,temp_wont_dirty;
7441   if(iend==slen-1) {
7442     will_dirty_i=will_dirty_next=0;
7443     wont_dirty_i=wont_dirty_next=0;
7444   }else{
7445     will_dirty_i=will_dirty_next=will_dirty[iend+1];
7446     wont_dirty_i=wont_dirty_next=wont_dirty[iend+1];
7447   }
7448   for (i=iend;i>=istart;i--)
7449   {
7450     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
7451     {
7452       if(ba[i]<start || ba[i]>=(start+slen*4))
7453       {
7454         // Branch out of this block, flush all regs
7455         if(itype[i]==RJUMP||itype[i]==UJUMP||(source[i]>>16)==0x1000)
7456         {
7457           // Unconditional branch
7458           will_dirty_i=0;
7459           wont_dirty_i=0;
7460           // Merge in delay slot (will dirty)
7461           for(r=0;r<HOST_REGS;r++) {
7462             if(r!=EXCLUDE_REG) {
7463               if((branch_regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7464               if((branch_regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7465               if((branch_regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7466               if((branch_regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7467               if((branch_regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7468               if(branch_regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7469               if(branch_regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7470               if((regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7471               if((regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7472               if((regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7473               if((regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7474               if((regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7475               if(regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7476               if(regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7477             }
7478           }
7479         }
7480         else
7481         {
7482           // Conditional branch
7483           will_dirty_i=0;
7484           wont_dirty_i=wont_dirty_next;
7485           // Merge in delay slot (will dirty)
7486           for(r=0;r<HOST_REGS;r++) {
7487             if(r!=EXCLUDE_REG) {
7488               if(!likely[i]) {
7489                 // Might not dirty if likely branch is not taken
7490                 if((branch_regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7491                 if((branch_regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7492                 if((branch_regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7493                 if((branch_regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7494                 if((branch_regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7495                 if(branch_regs[i].regmap[r]==0) will_dirty_i&=~(1<<r);
7496                 if(branch_regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7497                 //if((regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7498                 //if((regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7499                 if((regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7500                 if((regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7501                 if((regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7502                 if(regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7503                 if(regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7504               }
7505             }
7506           }
7507         }
7508         // Merge in delay slot (wont dirty)
7509         for(r=0;r<HOST_REGS;r++) {
7510           if(r!=EXCLUDE_REG) {
7511             if((regs[i].regmap[r]&63)==rt1[i]) wont_dirty_i|=1<<r;
7512             if((regs[i].regmap[r]&63)==rt2[i]) wont_dirty_i|=1<<r;
7513             if((regs[i].regmap[r]&63)==rt1[i+1]) wont_dirty_i|=1<<r;
7514             if((regs[i].regmap[r]&63)==rt2[i+1]) wont_dirty_i|=1<<r;
7515             if(regs[i].regmap[r]==CCREG) wont_dirty_i|=1<<r;
7516             if((branch_regs[i].regmap[r]&63)==rt1[i]) wont_dirty_i|=1<<r;
7517             if((branch_regs[i].regmap[r]&63)==rt2[i]) wont_dirty_i|=1<<r;
7518             if((branch_regs[i].regmap[r]&63)==rt1[i+1]) wont_dirty_i|=1<<r;
7519             if((branch_regs[i].regmap[r]&63)==rt2[i+1]) wont_dirty_i|=1<<r;
7520             if(branch_regs[i].regmap[r]==CCREG) wont_dirty_i|=1<<r;
7521           }
7522         }
7523         if(wr) {
7524           #ifndef DESTRUCTIVE_WRITEBACK
7525           branch_regs[i].dirty&=wont_dirty_i;
7526           #endif
7527           branch_regs[i].dirty|=will_dirty_i;
7528         }
7529       }
7530       else
7531       {
7532         // Internal branch
7533         if(ba[i]<=start+i*4) {
7534           // Backward branch
7535           if(itype[i]==RJUMP||itype[i]==UJUMP||(source[i]>>16)==0x1000)
7536           {
7537             // Unconditional branch
7538             temp_will_dirty=0;
7539             temp_wont_dirty=0;
7540             // Merge in delay slot (will dirty)
7541             for(r=0;r<HOST_REGS;r++) {
7542               if(r!=EXCLUDE_REG) {
7543                 if((branch_regs[i].regmap[r]&63)==rt1[i]) temp_will_dirty|=1<<r;
7544                 if((branch_regs[i].regmap[r]&63)==rt2[i]) temp_will_dirty|=1<<r;
7545                 if((branch_regs[i].regmap[r]&63)==rt1[i+1]) temp_will_dirty|=1<<r;
7546                 if((branch_regs[i].regmap[r]&63)==rt2[i+1]) temp_will_dirty|=1<<r;
7547                 if((branch_regs[i].regmap[r]&63)>33) temp_will_dirty&=~(1<<r);
7548                 if(branch_regs[i].regmap[r]<=0) temp_will_dirty&=~(1<<r);
7549                 if(branch_regs[i].regmap[r]==CCREG) temp_will_dirty|=1<<r;
7550                 if((regs[i].regmap[r]&63)==rt1[i]) temp_will_dirty|=1<<r;
7551                 if((regs[i].regmap[r]&63)==rt2[i]) temp_will_dirty|=1<<r;
7552                 if((regs[i].regmap[r]&63)==rt1[i+1]) temp_will_dirty|=1<<r;
7553                 if((regs[i].regmap[r]&63)==rt2[i+1]) temp_will_dirty|=1<<r;
7554                 if((regs[i].regmap[r]&63)>33) temp_will_dirty&=~(1<<r);
7555                 if(regs[i].regmap[r]<=0) temp_will_dirty&=~(1<<r);
7556                 if(regs[i].regmap[r]==CCREG) temp_will_dirty|=1<<r;
7557               }
7558             }
7559           } else {
7560             // Conditional branch (not taken case)
7561             temp_will_dirty=will_dirty_next;
7562             temp_wont_dirty=wont_dirty_next;
7563             // Merge in delay slot (will dirty)
7564             for(r=0;r<HOST_REGS;r++) {
7565               if(r!=EXCLUDE_REG) {
7566                 if(!likely[i]) {
7567                   // Will not dirty if likely branch is not taken
7568                   if((branch_regs[i].regmap[r]&63)==rt1[i]) temp_will_dirty|=1<<r;
7569                   if((branch_regs[i].regmap[r]&63)==rt2[i]) temp_will_dirty|=1<<r;
7570                   if((branch_regs[i].regmap[r]&63)==rt1[i+1]) temp_will_dirty|=1<<r;
7571                   if((branch_regs[i].regmap[r]&63)==rt2[i+1]) temp_will_dirty|=1<<r;
7572                   if((branch_regs[i].regmap[r]&63)>33) temp_will_dirty&=~(1<<r);
7573                   if(branch_regs[i].regmap[r]==0) temp_will_dirty&=~(1<<r);
7574                   if(branch_regs[i].regmap[r]==CCREG) temp_will_dirty|=1<<r;
7575                   //if((regs[i].regmap[r]&63)==rt1[i]) temp_will_dirty|=1<<r;
7576                   //if((regs[i].regmap[r]&63)==rt2[i]) temp_will_dirty|=1<<r;
7577                   if((regs[i].regmap[r]&63)==rt1[i+1]) temp_will_dirty|=1<<r;
7578                   if((regs[i].regmap[r]&63)==rt2[i+1]) temp_will_dirty|=1<<r;
7579                   if((regs[i].regmap[r]&63)>33) temp_will_dirty&=~(1<<r);
7580                   if(regs[i].regmap[r]<=0) temp_will_dirty&=~(1<<r);
7581                   if(regs[i].regmap[r]==CCREG) temp_will_dirty|=1<<r;
7582                 }
7583               }
7584             }
7585           }
7586           // Merge in delay slot (wont dirty)
7587           for(r=0;r<HOST_REGS;r++) {
7588             if(r!=EXCLUDE_REG) {
7589               if((regs[i].regmap[r]&63)==rt1[i]) temp_wont_dirty|=1<<r;
7590               if((regs[i].regmap[r]&63)==rt2[i]) temp_wont_dirty|=1<<r;
7591               if((regs[i].regmap[r]&63)==rt1[i+1]) temp_wont_dirty|=1<<r;
7592               if((regs[i].regmap[r]&63)==rt2[i+1]) temp_wont_dirty|=1<<r;
7593               if(regs[i].regmap[r]==CCREG) temp_wont_dirty|=1<<r;
7594               if((branch_regs[i].regmap[r]&63)==rt1[i]) temp_wont_dirty|=1<<r;
7595               if((branch_regs[i].regmap[r]&63)==rt2[i]) temp_wont_dirty|=1<<r;
7596               if((branch_regs[i].regmap[r]&63)==rt1[i+1]) temp_wont_dirty|=1<<r;
7597               if((branch_regs[i].regmap[r]&63)==rt2[i+1]) temp_wont_dirty|=1<<r;
7598               if(branch_regs[i].regmap[r]==CCREG) temp_wont_dirty|=1<<r;
7599             }
7600           }
7601           // Deal with changed mappings
7602           if(i<iend) {
7603             for(r=0;r<HOST_REGS;r++) {
7604               if(r!=EXCLUDE_REG) {
7605                 if(regs[i].regmap[r]!=regmap_pre[i][r]) {
7606                   temp_will_dirty&=~(1<<r);
7607                   temp_wont_dirty&=~(1<<r);
7608                   if((regmap_pre[i][r]&63)>0 && (regmap_pre[i][r]&63)<34) {
7609                     temp_will_dirty|=((unneeded_reg[i]>>(regmap_pre[i][r]&63))&1)<<r;
7610                     temp_wont_dirty|=((unneeded_reg[i]>>(regmap_pre[i][r]&63))&1)<<r;
7611                   } else {
7612                     temp_will_dirty|=1<<r;
7613                     temp_wont_dirty|=1<<r;
7614                   }
7615                 }
7616               }
7617             }
7618           }
7619           if(wr) {
7620             will_dirty[i]=temp_will_dirty;
7621             wont_dirty[i]=temp_wont_dirty;
7622             clean_registers((ba[i]-start)>>2,i-1,0);
7623           }else{
7624             // Limit recursion.  It can take an excessive amount
7625             // of time if there are a lot of nested loops.
7626             will_dirty[(ba[i]-start)>>2]=0;
7627             wont_dirty[(ba[i]-start)>>2]=-1;
7628           }
7629         }
7630         /*else*/ if(1)
7631         {
7632           if(itype[i]==RJUMP||itype[i]==UJUMP||(source[i]>>16)==0x1000)
7633           {
7634             // Unconditional branch
7635             will_dirty_i=0;
7636             wont_dirty_i=0;
7637           //if(ba[i]>start+i*4) { // Disable recursion (for debugging)
7638             for(r=0;r<HOST_REGS;r++) {
7639               if(r!=EXCLUDE_REG) {
7640                 if(branch_regs[i].regmap[r]==regs[(ba[i]-start)>>2].regmap_entry[r]) {
7641                   will_dirty_i|=will_dirty[(ba[i]-start)>>2]&(1<<r);
7642                   wont_dirty_i|=wont_dirty[(ba[i]-start)>>2]&(1<<r);
7643                 }
7644                 if(branch_regs[i].regmap[r]>=0) {
7645                   will_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>(branch_regs[i].regmap[r]&63))&1)<<r;
7646                   wont_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>(branch_regs[i].regmap[r]&63))&1)<<r;
7647                 }
7648               }
7649             }
7650           //}
7651             // Merge in delay slot
7652             for(r=0;r<HOST_REGS;r++) {
7653               if(r!=EXCLUDE_REG) {
7654                 if((branch_regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7655                 if((branch_regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7656                 if((branch_regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7657                 if((branch_regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7658                 if((branch_regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7659                 if(branch_regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7660                 if(branch_regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7661                 if((regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7662                 if((regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7663                 if((regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7664                 if((regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7665                 if((regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7666                 if(regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7667                 if(regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7668               }
7669             }
7670           } else {
7671             // Conditional branch
7672             will_dirty_i=will_dirty_next;
7673             wont_dirty_i=wont_dirty_next;
7674           //if(ba[i]>start+i*4) { // Disable recursion (for debugging)
7675             for(r=0;r<HOST_REGS;r++) {
7676               if(r!=EXCLUDE_REG) {
7677                 signed char target_reg=branch_regs[i].regmap[r];
7678                 if(target_reg==regs[(ba[i]-start)>>2].regmap_entry[r]) {
7679                   will_dirty_i&=will_dirty[(ba[i]-start)>>2]&(1<<r);
7680                   wont_dirty_i|=wont_dirty[(ba[i]-start)>>2]&(1<<r);
7681                 }
7682                 else if(target_reg>=0) {
7683                   will_dirty_i&=((unneeded_reg[(ba[i]-start)>>2]>>(target_reg&63))&1)<<r;
7684                   wont_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>(target_reg&63))&1)<<r;
7685                 }
7686                 // Treat delay slot as part of branch too
7687                 /*if(regs[i+1].regmap[r]==regs[(ba[i]-start)>>2].regmap_entry[r]) {
7688                   will_dirty[i+1]&=will_dirty[(ba[i]-start)>>2]&(1<<r);
7689                   wont_dirty[i+1]|=wont_dirty[(ba[i]-start)>>2]&(1<<r);
7690                 }
7691                 else
7692                 {
7693                   will_dirty[i+1]&=~(1<<r);
7694                 }*/
7695               }
7696             }
7697           //}
7698             // Merge in delay slot
7699             for(r=0;r<HOST_REGS;r++) {
7700               if(r!=EXCLUDE_REG) {
7701                 if(!likely[i]) {
7702                   // Might not dirty if likely branch is not taken
7703                   if((branch_regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7704                   if((branch_regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7705                   if((branch_regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7706                   if((branch_regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7707                   if((branch_regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7708                   if(branch_regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7709                   if(branch_regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7710                   //if((regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7711                   //if((regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7712                   if((regs[i].regmap[r]&63)==rt1[i+1]) will_dirty_i|=1<<r;
7713                   if((regs[i].regmap[r]&63)==rt2[i+1]) will_dirty_i|=1<<r;
7714                   if((regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7715                   if(regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7716                   if(regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7717                 }
7718               }
7719             }
7720           }
7721           // Merge in delay slot (won't dirty)
7722           for(r=0;r<HOST_REGS;r++) {
7723             if(r!=EXCLUDE_REG) {
7724               if((regs[i].regmap[r]&63)==rt1[i]) wont_dirty_i|=1<<r;
7725               if((regs[i].regmap[r]&63)==rt2[i]) wont_dirty_i|=1<<r;
7726               if((regs[i].regmap[r]&63)==rt1[i+1]) wont_dirty_i|=1<<r;
7727               if((regs[i].regmap[r]&63)==rt2[i+1]) wont_dirty_i|=1<<r;
7728               if(regs[i].regmap[r]==CCREG) wont_dirty_i|=1<<r;
7729               if((branch_regs[i].regmap[r]&63)==rt1[i]) wont_dirty_i|=1<<r;
7730               if((branch_regs[i].regmap[r]&63)==rt2[i]) wont_dirty_i|=1<<r;
7731               if((branch_regs[i].regmap[r]&63)==rt1[i+1]) wont_dirty_i|=1<<r;
7732               if((branch_regs[i].regmap[r]&63)==rt2[i+1]) wont_dirty_i|=1<<r;
7733               if(branch_regs[i].regmap[r]==CCREG) wont_dirty_i|=1<<r;
7734             }
7735           }
7736           if(wr) {
7737             #ifndef DESTRUCTIVE_WRITEBACK
7738             branch_regs[i].dirty&=wont_dirty_i;
7739             #endif
7740             branch_regs[i].dirty|=will_dirty_i;
7741           }
7742         }
7743       }
7744     }
7745     else if(itype[i]==SYSCALL||itype[i]==HLECALL||itype[i]==INTCALL)
7746     {
7747       // SYSCALL instruction (software interrupt)
7748       will_dirty_i=0;
7749       wont_dirty_i=0;
7750     }
7751     else if(itype[i]==COP0 && (source[i]&0x3f)==0x18)
7752     {
7753       // ERET instruction (return from interrupt)
7754       will_dirty_i=0;
7755       wont_dirty_i=0;
7756     }
7757     will_dirty_next=will_dirty_i;
7758     wont_dirty_next=wont_dirty_i;
7759     for(r=0;r<HOST_REGS;r++) {
7760       if(r!=EXCLUDE_REG) {
7761         if((regs[i].regmap[r]&63)==rt1[i]) will_dirty_i|=1<<r;
7762         if((regs[i].regmap[r]&63)==rt2[i]) will_dirty_i|=1<<r;
7763         if((regs[i].regmap[r]&63)>33) will_dirty_i&=~(1<<r);
7764         if(regs[i].regmap[r]<=0) will_dirty_i&=~(1<<r);
7765         if(regs[i].regmap[r]==CCREG) will_dirty_i|=1<<r;
7766         if((regs[i].regmap[r]&63)==rt1[i]) wont_dirty_i|=1<<r;
7767         if((regs[i].regmap[r]&63)==rt2[i]) wont_dirty_i|=1<<r;
7768         if(regs[i].regmap[r]==CCREG) wont_dirty_i|=1<<r;
7769         if(i>istart) {
7770           if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&itype[i]!=CJUMP&&itype[i]!=SJUMP&&itype[i]!=FJUMP)
7771           {
7772             // Don't store a register immediately after writing it,
7773             // may prevent dual-issue.
7774             if((regs[i].regmap[r]&63)==rt1[i-1]) wont_dirty_i|=1<<r;
7775             if((regs[i].regmap[r]&63)==rt2[i-1]) wont_dirty_i|=1<<r;
7776           }
7777         }
7778       }
7779     }
7780     // Save it
7781     will_dirty[i]=will_dirty_i;
7782     wont_dirty[i]=wont_dirty_i;
7783     // Mark registers that won't be dirtied as not dirty
7784     if(wr) {
7785       /*printf("wr (%d,%d) %x will:",istart,iend,start+i*4);
7786       for(r=0;r<HOST_REGS;r++) {
7787         if((will_dirty_i>>r)&1) {
7788           printf(" r%d",r);
7789         }
7790       }
7791       printf("\n");*/
7792
7793       //if(i==istart||(itype[i-1]!=RJUMP&&itype[i-1]!=UJUMP&&itype[i-1]!=CJUMP&&itype[i-1]!=SJUMP&&itype[i-1]!=FJUMP)) {
7794         regs[i].dirty|=will_dirty_i;
7795         #ifndef DESTRUCTIVE_WRITEBACK
7796         regs[i].dirty&=wont_dirty_i;
7797         if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
7798         {
7799           if(i<iend-1&&itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000) {
7800             for(r=0;r<HOST_REGS;r++) {
7801               if(r!=EXCLUDE_REG) {
7802                 if(regs[i].regmap[r]==regmap_pre[i+2][r]) {
7803                   regs[i+2].wasdirty&=wont_dirty_i|~(1<<r);
7804                 }else {/*printf("i: %x (%d) mismatch(+2): %d\n",start+i*4,i,r);/*assert(!((wont_dirty_i>>r)&1));*/}
7805               }
7806             }
7807           }
7808         }
7809         else
7810         {
7811           if(i<iend) {
7812             for(r=0;r<HOST_REGS;r++) {
7813               if(r!=EXCLUDE_REG) {
7814                 if(regs[i].regmap[r]==regmap_pre[i+1][r]) {
7815                   regs[i+1].wasdirty&=wont_dirty_i|~(1<<r);
7816                 }else {/*printf("i: %x (%d) mismatch(+1): %d\n",start+i*4,i,r);/*assert(!((wont_dirty_i>>r)&1));*/}
7817               }
7818             }
7819           }
7820         }
7821         #endif
7822       //}
7823     }
7824     // Deal with changed mappings
7825     temp_will_dirty=will_dirty_i;
7826     temp_wont_dirty=wont_dirty_i;
7827     for(r=0;r<HOST_REGS;r++) {
7828       if(r!=EXCLUDE_REG) {
7829         int nr;
7830         if(regs[i].regmap[r]==regmap_pre[i][r]) {
7831           if(wr) {
7832             #ifndef DESTRUCTIVE_WRITEBACK
7833             regs[i].wasdirty&=wont_dirty_i|~(1<<r);
7834             #endif
7835             regs[i].wasdirty|=will_dirty_i&(1<<r);
7836           }
7837         }
7838         else if(regmap_pre[i][r]>=0&&(nr=get_reg(regs[i].regmap,regmap_pre[i][r]))>=0) {
7839           // Register moved to a different register
7840           will_dirty_i&=~(1<<r);
7841           wont_dirty_i&=~(1<<r);
7842           will_dirty_i|=((temp_will_dirty>>nr)&1)<<r;
7843           wont_dirty_i|=((temp_wont_dirty>>nr)&1)<<r;
7844           if(wr) {
7845             #ifndef DESTRUCTIVE_WRITEBACK
7846             regs[i].wasdirty&=wont_dirty_i|~(1<<r);
7847             #endif
7848             regs[i].wasdirty|=will_dirty_i&(1<<r);
7849           }
7850         }
7851         else {
7852           will_dirty_i&=~(1<<r);
7853           wont_dirty_i&=~(1<<r);
7854           if((regmap_pre[i][r]&63)>0 && (regmap_pre[i][r]&63)<34) {
7855             will_dirty_i|=((unneeded_reg[i]>>(regmap_pre[i][r]&63))&1)<<r;
7856             wont_dirty_i|=((unneeded_reg[i]>>(regmap_pre[i][r]&63))&1)<<r;
7857           } else {
7858             wont_dirty_i|=1<<r;
7859             /*printf("i: %x (%d) mismatch: %d\n",start+i*4,i,r);/*assert(!((will_dirty>>r)&1));*/
7860           }
7861         }
7862       }
7863     }
7864   }
7865 }
7866
7867 #ifdef DISASM
7868   /* disassembly */
7869 void disassemble_inst(int i)
7870 {
7871     if (bt[i]) printf("*"); else printf(" ");
7872     switch(itype[i]) {
7873       case UJUMP:
7874         printf (" %x: %s %8x\n",start+i*4,insn[i],ba[i]);break;
7875       case CJUMP:
7876         printf (" %x: %s r%d,r%d,%8x\n",start+i*4,insn[i],rs1[i],rs2[i],i?start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14):*ba);break;
7877       case SJUMP:
7878         printf (" %x: %s r%d,%8x\n",start+i*4,insn[i],rs1[i],start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14));break;
7879       case FJUMP:
7880         printf (" %x: %s %8x\n",start+i*4,insn[i],ba[i]);break;
7881       case RJUMP:
7882         if (opcode[i]==0x9&&rt1[i]!=31)
7883           printf (" %x: %s r%d,r%d\n",start+i*4,insn[i],rt1[i],rs1[i]);
7884         else
7885           printf (" %x: %s r%d\n",start+i*4,insn[i],rs1[i]);
7886         break;
7887       case SPAN:
7888         printf (" %x: %s (pagespan) r%d,r%d,%8x\n",start+i*4,insn[i],rs1[i],rs2[i],ba[i]);break;
7889       case IMM16:
7890         if(opcode[i]==0xf) //LUI
7891           printf (" %x: %s r%d,%4x0000\n",start+i*4,insn[i],rt1[i],imm[i]&0xffff);
7892         else
7893           printf (" %x: %s r%d,r%d,%d\n",start+i*4,insn[i],rt1[i],rs1[i],imm[i]);
7894         break;
7895       case LOAD:
7896       case LOADLR:
7897         printf (" %x: %s r%d,r%d+%x\n",start+i*4,insn[i],rt1[i],rs1[i],imm[i]);
7898         break;
7899       case STORE:
7900       case STORELR:
7901         printf (" %x: %s r%d,r%d+%x\n",start+i*4,insn[i],rs2[i],rs1[i],imm[i]);
7902         break;
7903       case ALU:
7904       case SHIFT:
7905         printf (" %x: %s r%d,r%d,r%d\n",start+i*4,insn[i],rt1[i],rs1[i],rs2[i]);
7906         break;
7907       case MULTDIV:
7908         printf (" %x: %s r%d,r%d\n",start+i*4,insn[i],rs1[i],rs2[i]);
7909         break;
7910       case SHIFTIMM:
7911         printf (" %x: %s r%d,r%d,%d\n",start+i*4,insn[i],rt1[i],rs1[i],imm[i]);
7912         break;
7913       case MOV:
7914         if((opcode2[i]&0x1d)==0x10)
7915           printf (" %x: %s r%d\n",start+i*4,insn[i],rt1[i]);
7916         else if((opcode2[i]&0x1d)==0x11)
7917           printf (" %x: %s r%d\n",start+i*4,insn[i],rs1[i]);
7918         else
7919           printf (" %x: %s\n",start+i*4,insn[i]);
7920         break;
7921       case COP0:
7922         if(opcode2[i]==0)
7923           printf (" %x: %s r%d,cpr0[%d]\n",start+i*4,insn[i],rt1[i],(source[i]>>11)&0x1f); // MFC0
7924         else if(opcode2[i]==4)
7925           printf (" %x: %s r%d,cpr0[%d]\n",start+i*4,insn[i],rs1[i],(source[i]>>11)&0x1f); // MTC0
7926         else printf (" %x: %s\n",start+i*4,insn[i]);
7927         break;
7928       case COP1:
7929         if(opcode2[i]<3)
7930           printf (" %x: %s r%d,cpr1[%d]\n",start+i*4,insn[i],rt1[i],(source[i]>>11)&0x1f); // MFC1
7931         else if(opcode2[i]>3)
7932           printf (" %x: %s r%d,cpr1[%d]\n",start+i*4,insn[i],rs1[i],(source[i]>>11)&0x1f); // MTC1
7933         else printf (" %x: %s\n",start+i*4,insn[i]);
7934         break;
7935       case COP2:
7936         if(opcode2[i]<3)
7937           printf (" %x: %s r%d,cpr2[%d]\n",start+i*4,insn[i],rt1[i],(source[i]>>11)&0x1f); // MFC2
7938         else if(opcode2[i]>3)
7939           printf (" %x: %s r%d,cpr2[%d]\n",start+i*4,insn[i],rs1[i],(source[i]>>11)&0x1f); // MTC2
7940         else printf (" %x: %s\n",start+i*4,insn[i]);
7941         break;
7942       case C1LS:
7943         printf (" %x: %s cpr1[%d],r%d+%x\n",start+i*4,insn[i],(source[i]>>16)&0x1f,rs1[i],imm[i]);
7944         break;
7945       case C2LS:
7946         printf (" %x: %s cpr2[%d],r%d+%x\n",start+i*4,insn[i],(source[i]>>16)&0x1f,rs1[i],imm[i]);
7947         break;
7948       case INTCALL:
7949         printf (" %x: %s (INTCALL)\n",start+i*4,insn[i]);
7950         break;
7951       default:
7952         //printf (" %s %8x\n",insn[i],source[i]);
7953         printf (" %x: %s\n",start+i*4,insn[i]);
7954     }
7955 }
7956 #else
7957 static void disassemble_inst(int i) {}
7958 #endif // DISASM
7959
7960 // clear the state completely, instead of just marking
7961 // things invalid like invalidate_all_pages() does
7962 void new_dynarec_clear_full()
7963 {
7964   int n;
7965   out=(u_char *)BASE_ADDR;
7966   memset(invalid_code,1,sizeof(invalid_code));
7967   memset(hash_table,0xff,sizeof(hash_table));
7968   memset(mini_ht,-1,sizeof(mini_ht));
7969   memset(restore_candidate,0,sizeof(restore_candidate));
7970   memset(shadow,0,sizeof(shadow));
7971   copy=shadow;
7972   expirep=16384; // Expiry pointer, +2 blocks
7973   pending_exception=0;
7974   literalcount=0;
7975   stop_after_jal=0;
7976   inv_code_start=inv_code_end=~0;
7977   // TLB
7978 #ifndef DISABLE_TLB
7979   using_tlb=0;
7980   for(n=0;n<524288;n++) // 0 .. 0x7FFFFFFF
7981     memory_map[n]=-1;
7982   for(n=524288;n<526336;n++) // 0x80000000 .. 0x807FFFFF
7983     memory_map[n]=((u_int)rdram-0x80000000)>>2;
7984   for(n=526336;n<1048576;n++) // 0x80800000 .. 0xFFFFFFFF
7985     memory_map[n]=-1;
7986 #endif
7987   for(n=0;n<4096;n++) ll_clear(jump_in+n);
7988   for(n=0;n<4096;n++) ll_clear(jump_out+n);
7989   for(n=0;n<4096;n++) ll_clear(jump_dirty+n);
7990 }
7991
7992 void new_dynarec_init()
7993 {
7994   printf("Init new dynarec\n");
7995   out=(u_char *)BASE_ADDR;
7996 #ifdef BASE_ADDR_FIXED
7997   if (mmap (out, 1<<TARGET_SIZE_2,
7998             PROT_READ | PROT_WRITE | PROT_EXEC,
7999             MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
8000             -1, 0) <= 0) {printf("mmap() failed\n");}
8001 #else
8002   // not all systems allow execute in data segment by default
8003   if (mprotect(out, 1<<TARGET_SIZE_2, PROT_READ | PROT_WRITE | PROT_EXEC) != 0)
8004     printf("mprotect() failed\n");
8005 #endif
8006 #ifdef MUPEN64
8007   rdword=&readmem_dword;
8008   fake_pc.f.r.rs=&readmem_dword;
8009   fake_pc.f.r.rt=&readmem_dword;
8010   fake_pc.f.r.rd=&readmem_dword;
8011 #endif
8012   int n;
8013   cycle_multiplier=200;
8014   new_dynarec_clear_full();
8015 #ifdef HOST_IMM8
8016   // Copy this into local area so we don't have to put it in every literal pool
8017   invc_ptr=invalid_code;
8018 #endif
8019 #ifdef MUPEN64
8020   for(n=0;n<0x8000;n++) { // 0 .. 0x7FFFFFFF
8021     writemem[n] = write_nomem_new;
8022     writememb[n] = write_nomemb_new;
8023     writememh[n] = write_nomemh_new;
8024 #ifndef FORCE32
8025     writememd[n] = write_nomemd_new;
8026 #endif
8027     readmem[n] = read_nomem_new;
8028     readmemb[n] = read_nomemb_new;
8029     readmemh[n] = read_nomemh_new;
8030 #ifndef FORCE32
8031     readmemd[n] = read_nomemd_new;
8032 #endif
8033   }
8034   for(n=0x8000;n<0x8080;n++) { // 0x80000000 .. 0x807FFFFF
8035     writemem[n] = write_rdram_new;
8036     writememb[n] = write_rdramb_new;
8037     writememh[n] = write_rdramh_new;
8038 #ifndef FORCE32
8039     writememd[n] = write_rdramd_new;
8040 #endif
8041   }
8042   for(n=0xC000;n<0x10000;n++) { // 0xC0000000 .. 0xFFFFFFFF
8043     writemem[n] = write_nomem_new;
8044     writememb[n] = write_nomemb_new;
8045     writememh[n] = write_nomemh_new;
8046 #ifndef FORCE32
8047     writememd[n] = write_nomemd_new;
8048 #endif
8049     readmem[n] = read_nomem_new;
8050     readmemb[n] = read_nomemb_new;
8051     readmemh[n] = read_nomemh_new;
8052 #ifndef FORCE32
8053     readmemd[n] = read_nomemd_new;
8054 #endif
8055   }
8056 #endif
8057   tlb_hacks();
8058   arch_init();
8059 }
8060
8061 void new_dynarec_cleanup()
8062 {
8063   int n;
8064   #ifdef BASE_ADDR_FIXED
8065   if (munmap ((void *)BASE_ADDR, 1<<TARGET_SIZE_2) < 0) {printf("munmap() failed\n");}
8066   #endif
8067   for(n=0;n<4096;n++) ll_clear(jump_in+n);
8068   for(n=0;n<4096;n++) ll_clear(jump_out+n);
8069   for(n=0;n<4096;n++) ll_clear(jump_dirty+n);
8070   #ifdef ROM_COPY
8071   if (munmap (ROM_COPY, 67108864) < 0) {printf("munmap() failed\n");}
8072   #endif
8073 }
8074
8075 int new_recompile_block(int addr)
8076 {
8077 /*
8078   if(addr==0x800cd050) {
8079     int block;
8080     for(block=0x80000;block<0x80800;block++) invalidate_block(block);
8081     int n;
8082     for(n=0;n<=2048;n++) ll_clear(jump_dirty+n);
8083   }
8084 */
8085   //if(Count==365117028) tracedebug=1;
8086   assem_debug("NOTCOMPILED: addr = %x -> %x\n", (int)addr, (int)out);
8087   //printf("NOTCOMPILED: addr = %x -> %x\n", (int)addr, (int)out);
8088   //printf("TRACE: count=%d next=%d (compile %x)\n",Count,next_interupt,addr);
8089   //if(debug)
8090   //printf("TRACE: count=%d next=%d (checksum %x)\n",Count,next_interupt,mchecksum());
8091   //printf("fpu mapping=%x enabled=%x\n",(Status & 0x04000000)>>26,(Status & 0x20000000)>>29);
8092   /*if(Count>=312978186) {
8093     rlist();
8094   }*/
8095   //rlist();
8096   start = (u_int)addr&~3;
8097   //assert(((u_int)addr&1)==0);
8098   new_dynarec_did_compile=1;
8099 #ifdef PCSX
8100   if (Config.HLE && start == 0x80001000) // hlecall
8101   {
8102     // XXX: is this enough? Maybe check hleSoftCall?
8103     u_int beginning=(u_int)out;
8104     u_int page=get_page(start);
8105     invalid_code[start>>12]=0;
8106     emit_movimm(start,0);
8107     emit_writeword(0,(int)&pcaddr);
8108     emit_jmp((int)new_dyna_leave);
8109     literal_pool(0);
8110 #ifdef __arm__
8111     __clear_cache((void *)beginning,out);
8112 #endif
8113     ll_add(jump_in+page,start,(void *)beginning);
8114     return 0;
8115   }
8116   else if ((u_int)addr < 0x00200000 ||
8117     (0xa0000000 <= addr && addr < 0xa0200000)) {
8118     // used for BIOS calls mostly?
8119     source = (u_int *)((u_int)rdram+(start&0x1fffff));
8120     pagelimit = (addr&0xa0000000)|0x00200000;
8121   }
8122   else if (!Config.HLE && (
8123 /*    (0x9fc00000 <= addr && addr < 0x9fc80000) ||*/
8124     (0xbfc00000 <= addr && addr < 0xbfc80000))) {
8125     // BIOS
8126     source = (u_int *)((u_int)psxR+(start&0x7ffff));
8127     pagelimit = (addr&0xfff00000)|0x80000;
8128   }
8129   else
8130 #endif
8131 #ifdef MUPEN64
8132   if ((int)addr >= 0xa4000000 && (int)addr < 0xa4001000) {
8133     source = (u_int *)((u_int)SP_DMEM+start-0xa4000000);
8134     pagelimit = 0xa4001000;
8135   }
8136   else
8137 #endif
8138   if ((int)addr >= 0x80000000 && (int)addr < 0x80000000+RAM_SIZE) {
8139     source = (u_int *)((u_int)rdram+start-0x80000000);
8140     pagelimit = 0x80000000+RAM_SIZE;
8141   }
8142 #ifndef DISABLE_TLB
8143   else if ((signed int)addr >= (signed int)0xC0000000) {
8144     //printf("addr=%x mm=%x\n",(u_int)addr,(memory_map[start>>12]<<2));
8145     //if(tlb_LUT_r[start>>12])
8146       //source = (u_int *)(((int)rdram)+(tlb_LUT_r[start>>12]&0xFFFFF000)+(((int)addr)&0xFFF)-0x80000000);
8147     if((signed int)memory_map[start>>12]>=0) {
8148       source = (u_int *)((u_int)(start+(memory_map[start>>12]<<2)));
8149       pagelimit=(start+4096)&0xFFFFF000;
8150       int map=memory_map[start>>12];
8151       int i;
8152       for(i=0;i<5;i++) {
8153         //printf("start: %x next: %x\n",map,memory_map[pagelimit>>12]);
8154         if((map&0xBFFFFFFF)==(memory_map[pagelimit>>12]&0xBFFFFFFF)) pagelimit+=4096;
8155       }
8156       assem_debug("pagelimit=%x\n",pagelimit);
8157       assem_debug("mapping=%x (%x)\n",memory_map[start>>12],(memory_map[start>>12]<<2)+start);
8158     }
8159     else {
8160       assem_debug("Compile at unmapped memory address: %x \n", (int)addr);
8161       //assem_debug("start: %x next: %x\n",memory_map[start>>12],memory_map[(start+4096)>>12]);
8162       return -1; // Caller will invoke exception handler
8163     }
8164     //printf("source= %x\n",(int)source);
8165   }
8166 #endif
8167   else {
8168     printf("Compile at bogus memory address: %x \n", (int)addr);
8169     exit(1);
8170   }
8171
8172   /* Pass 1: disassemble */
8173   /* Pass 2: register dependencies, branch targets */
8174   /* Pass 3: register allocation */
8175   /* Pass 4: branch dependencies */
8176   /* Pass 5: pre-alloc */
8177   /* Pass 6: optimize clean/dirty state */
8178   /* Pass 7: flag 32-bit registers */
8179   /* Pass 8: assembly */
8180   /* Pass 9: linker */
8181   /* Pass 10: garbage collection / free memory */
8182
8183   int i,j;
8184   int done=0;
8185   unsigned int type,op,op2;
8186
8187   //printf("addr = %x source = %x %x\n", addr,source,source[0]);
8188
8189   /* Pass 1 disassembly */
8190
8191   for(i=0;!done;i++) {
8192     bt[i]=0;likely[i]=0;ooo[i]=0;op2=0;
8193     minimum_free_regs[i]=0;
8194     opcode[i]=op=source[i]>>26;
8195     switch(op)
8196     {
8197       case 0x00: strcpy(insn[i],"special"); type=NI;
8198         op2=source[i]&0x3f;
8199         switch(op2)
8200         {
8201           case 0x00: strcpy(insn[i],"SLL"); type=SHIFTIMM; break;
8202           case 0x02: strcpy(insn[i],"SRL"); type=SHIFTIMM; break;
8203           case 0x03: strcpy(insn[i],"SRA"); type=SHIFTIMM; break;
8204           case 0x04: strcpy(insn[i],"SLLV"); type=SHIFT; break;
8205           case 0x06: strcpy(insn[i],"SRLV"); type=SHIFT; break;
8206           case 0x07: strcpy(insn[i],"SRAV"); type=SHIFT; break;
8207           case 0x08: strcpy(insn[i],"JR"); type=RJUMP; break;
8208           case 0x09: strcpy(insn[i],"JALR"); type=RJUMP; break;
8209           case 0x0C: strcpy(insn[i],"SYSCALL"); type=SYSCALL; break;
8210           case 0x0D: strcpy(insn[i],"BREAK"); type=OTHER; break;
8211           case 0x0F: strcpy(insn[i],"SYNC"); type=OTHER; break;
8212           case 0x10: strcpy(insn[i],"MFHI"); type=MOV; break;
8213           case 0x11: strcpy(insn[i],"MTHI"); type=MOV; break;
8214           case 0x12: strcpy(insn[i],"MFLO"); type=MOV; break;
8215           case 0x13: strcpy(insn[i],"MTLO"); type=MOV; break;
8216           case 0x18: strcpy(insn[i],"MULT"); type=MULTDIV; break;
8217           case 0x19: strcpy(insn[i],"MULTU"); type=MULTDIV; break;
8218           case 0x1A: strcpy(insn[i],"DIV"); type=MULTDIV; break;
8219           case 0x1B: strcpy(insn[i],"DIVU"); type=MULTDIV; break;
8220           case 0x20: strcpy(insn[i],"ADD"); type=ALU; break;
8221           case 0x21: strcpy(insn[i],"ADDU"); type=ALU; break;
8222           case 0x22: strcpy(insn[i],"SUB"); type=ALU; break;
8223           case 0x23: strcpy(insn[i],"SUBU"); type=ALU; break;
8224           case 0x24: strcpy(insn[i],"AND"); type=ALU; break;
8225           case 0x25: strcpy(insn[i],"OR"); type=ALU; break;
8226           case 0x26: strcpy(insn[i],"XOR"); type=ALU; break;
8227           case 0x27: strcpy(insn[i],"NOR"); type=ALU; break;
8228           case 0x2A: strcpy(insn[i],"SLT"); type=ALU; break;
8229           case 0x2B: strcpy(insn[i],"SLTU"); type=ALU; break;
8230           case 0x30: strcpy(insn[i],"TGE"); type=NI; break;
8231           case 0x31: strcpy(insn[i],"TGEU"); type=NI; break;
8232           case 0x32: strcpy(insn[i],"TLT"); type=NI; break;
8233           case 0x33: strcpy(insn[i],"TLTU"); type=NI; break;
8234           case 0x34: strcpy(insn[i],"TEQ"); type=NI; break;
8235           case 0x36: strcpy(insn[i],"TNE"); type=NI; break;
8236 #ifndef FORCE32
8237           case 0x14: strcpy(insn[i],"DSLLV"); type=SHIFT; break;
8238           case 0x16: strcpy(insn[i],"DSRLV"); type=SHIFT; break;
8239           case 0x17: strcpy(insn[i],"DSRAV"); type=SHIFT; break;
8240           case 0x1C: strcpy(insn[i],"DMULT"); type=MULTDIV; break;
8241           case 0x1D: strcpy(insn[i],"DMULTU"); type=MULTDIV; break;
8242           case 0x1E: strcpy(insn[i],"DDIV"); type=MULTDIV; break;
8243           case 0x1F: strcpy(insn[i],"DDIVU"); type=MULTDIV; break;
8244           case 0x2C: strcpy(insn[i],"DADD"); type=ALU; break;
8245           case 0x2D: strcpy(insn[i],"DADDU"); type=ALU; break;
8246           case 0x2E: strcpy(insn[i],"DSUB"); type=ALU; break;
8247           case 0x2F: strcpy(insn[i],"DSUBU"); type=ALU; break;
8248           case 0x38: strcpy(insn[i],"DSLL"); type=SHIFTIMM; break;
8249           case 0x3A: strcpy(insn[i],"DSRL"); type=SHIFTIMM; break;
8250           case 0x3B: strcpy(insn[i],"DSRA"); type=SHIFTIMM; break;
8251           case 0x3C: strcpy(insn[i],"DSLL32"); type=SHIFTIMM; break;
8252           case 0x3E: strcpy(insn[i],"DSRL32"); type=SHIFTIMM; break;
8253           case 0x3F: strcpy(insn[i],"DSRA32"); type=SHIFTIMM; break;
8254 #endif
8255         }
8256         break;
8257       case 0x01: strcpy(insn[i],"regimm"); type=NI;
8258         op2=(source[i]>>16)&0x1f;
8259         switch(op2)
8260         {
8261           case 0x00: strcpy(insn[i],"BLTZ"); type=SJUMP; break;
8262           case 0x01: strcpy(insn[i],"BGEZ"); type=SJUMP; break;
8263           case 0x02: strcpy(insn[i],"BLTZL"); type=SJUMP; break;
8264           case 0x03: strcpy(insn[i],"BGEZL"); type=SJUMP; break;
8265           case 0x08: strcpy(insn[i],"TGEI"); type=NI; break;
8266           case 0x09: strcpy(insn[i],"TGEIU"); type=NI; break;
8267           case 0x0A: strcpy(insn[i],"TLTI"); type=NI; break;
8268           case 0x0B: strcpy(insn[i],"TLTIU"); type=NI; break;
8269           case 0x0C: strcpy(insn[i],"TEQI"); type=NI; break;
8270           case 0x0E: strcpy(insn[i],"TNEI"); type=NI; break;
8271           case 0x10: strcpy(insn[i],"BLTZAL"); type=SJUMP; break;
8272           case 0x11: strcpy(insn[i],"BGEZAL"); type=SJUMP; break;
8273           case 0x12: strcpy(insn[i],"BLTZALL"); type=SJUMP; break;
8274           case 0x13: strcpy(insn[i],"BGEZALL"); type=SJUMP; break;
8275         }
8276         break;
8277       case 0x02: strcpy(insn[i],"J"); type=UJUMP; break;
8278       case 0x03: strcpy(insn[i],"JAL"); type=UJUMP; break;
8279       case 0x04: strcpy(insn[i],"BEQ"); type=CJUMP; break;
8280       case 0x05: strcpy(insn[i],"BNE"); type=CJUMP; break;
8281       case 0x06: strcpy(insn[i],"BLEZ"); type=CJUMP; break;
8282       case 0x07: strcpy(insn[i],"BGTZ"); type=CJUMP; break;
8283       case 0x08: strcpy(insn[i],"ADDI"); type=IMM16; break;
8284       case 0x09: strcpy(insn[i],"ADDIU"); type=IMM16; break;
8285       case 0x0A: strcpy(insn[i],"SLTI"); type=IMM16; break;
8286       case 0x0B: strcpy(insn[i],"SLTIU"); type=IMM16; break;
8287       case 0x0C: strcpy(insn[i],"ANDI"); type=IMM16; break;
8288       case 0x0D: strcpy(insn[i],"ORI"); type=IMM16; break;
8289       case 0x0E: strcpy(insn[i],"XORI"); type=IMM16; break;
8290       case 0x0F: strcpy(insn[i],"LUI"); type=IMM16; break;
8291       case 0x10: strcpy(insn[i],"cop0"); type=NI;
8292         op2=(source[i]>>21)&0x1f;
8293         switch(op2)
8294         {
8295           case 0x00: strcpy(insn[i],"MFC0"); type=COP0; break;
8296           case 0x04: strcpy(insn[i],"MTC0"); type=COP0; break;
8297           case 0x10: strcpy(insn[i],"tlb"); type=NI;
8298           switch(source[i]&0x3f)
8299           {
8300             case 0x01: strcpy(insn[i],"TLBR"); type=COP0; break;
8301             case 0x02: strcpy(insn[i],"TLBWI"); type=COP0; break;
8302             case 0x06: strcpy(insn[i],"TLBWR"); type=COP0; break;
8303             case 0x08: strcpy(insn[i],"TLBP"); type=COP0; break;
8304 #ifdef PCSX
8305             case 0x10: strcpy(insn[i],"RFE"); type=COP0; break;
8306 #else
8307             case 0x18: strcpy(insn[i],"ERET"); type=COP0; break;
8308 #endif
8309           }
8310         }
8311         break;
8312       case 0x11: strcpy(insn[i],"cop1"); type=NI;
8313         op2=(source[i]>>21)&0x1f;
8314         switch(op2)
8315         {
8316           case 0x00: strcpy(insn[i],"MFC1"); type=COP1; break;
8317           case 0x01: strcpy(insn[i],"DMFC1"); type=COP1; break;
8318           case 0x02: strcpy(insn[i],"CFC1"); type=COP1; break;
8319           case 0x04: strcpy(insn[i],"MTC1"); type=COP1; break;
8320           case 0x05: strcpy(insn[i],"DMTC1"); type=COP1; break;
8321           case 0x06: strcpy(insn[i],"CTC1"); type=COP1; break;
8322           case 0x08: strcpy(insn[i],"BC1"); type=FJUMP;
8323           switch((source[i]>>16)&0x3)
8324           {
8325             case 0x00: strcpy(insn[i],"BC1F"); break;
8326             case 0x01: strcpy(insn[i],"BC1T"); break;
8327             case 0x02: strcpy(insn[i],"BC1FL"); break;
8328             case 0x03: strcpy(insn[i],"BC1TL"); break;
8329           }
8330           break;
8331           case 0x10: strcpy(insn[i],"C1.S"); type=NI;
8332           switch(source[i]&0x3f)
8333           {
8334             case 0x00: strcpy(insn[i],"ADD.S"); type=FLOAT; break;
8335             case 0x01: strcpy(insn[i],"SUB.S"); type=FLOAT; break;
8336             case 0x02: strcpy(insn[i],"MUL.S"); type=FLOAT; break;
8337             case 0x03: strcpy(insn[i],"DIV.S"); type=FLOAT; break;
8338             case 0x04: strcpy(insn[i],"SQRT.S"); type=FLOAT; break;
8339             case 0x05: strcpy(insn[i],"ABS.S"); type=FLOAT; break;
8340             case 0x06: strcpy(insn[i],"MOV.S"); type=FLOAT; break;
8341             case 0x07: strcpy(insn[i],"NEG.S"); type=FLOAT; break;
8342             case 0x08: strcpy(insn[i],"ROUND.L.S"); type=FCONV; break;
8343             case 0x09: strcpy(insn[i],"TRUNC.L.S"); type=FCONV; break;
8344             case 0x0A: strcpy(insn[i],"CEIL.L.S"); type=FCONV; break;
8345             case 0x0B: strcpy(insn[i],"FLOOR.L.S"); type=FCONV; break;
8346             case 0x0C: strcpy(insn[i],"ROUND.W.S"); type=FCONV; break;
8347             case 0x0D: strcpy(insn[i],"TRUNC.W.S"); type=FCONV; break;
8348             case 0x0E: strcpy(insn[i],"CEIL.W.S"); type=FCONV; break;
8349             case 0x0F: strcpy(insn[i],"FLOOR.W.S"); type=FCONV; break;
8350             case 0x21: strcpy(insn[i],"CVT.D.S"); type=FCONV; break;
8351             case 0x24: strcpy(insn[i],"CVT.W.S"); type=FCONV; break;
8352             case 0x25: strcpy(insn[i],"CVT.L.S"); type=FCONV; break;
8353             case 0x30: strcpy(insn[i],"C.F.S"); type=FCOMP; break;
8354             case 0x31: strcpy(insn[i],"C.UN.S"); type=FCOMP; break;
8355             case 0x32: strcpy(insn[i],"C.EQ.S"); type=FCOMP; break;
8356             case 0x33: strcpy(insn[i],"C.UEQ.S"); type=FCOMP; break;
8357             case 0x34: strcpy(insn[i],"C.OLT.S"); type=FCOMP; break;
8358             case 0x35: strcpy(insn[i],"C.ULT.S"); type=FCOMP; break;
8359             case 0x36: strcpy(insn[i],"C.OLE.S"); type=FCOMP; break;
8360             case 0x37: strcpy(insn[i],"C.ULE.S"); type=FCOMP; break;
8361             case 0x38: strcpy(insn[i],"C.SF.S"); type=FCOMP; break;
8362             case 0x39: strcpy(insn[i],"C.NGLE.S"); type=FCOMP; break;
8363             case 0x3A: strcpy(insn[i],"C.SEQ.S"); type=FCOMP; break;
8364             case 0x3B: strcpy(insn[i],"C.NGL.S"); type=FCOMP; break;
8365             case 0x3C: strcpy(insn[i],"C.LT.S"); type=FCOMP; break;
8366             case 0x3D: strcpy(insn[i],"C.NGE.S"); type=FCOMP; break;
8367             case 0x3E: strcpy(insn[i],"C.LE.S"); type=FCOMP; break;
8368             case 0x3F: strcpy(insn[i],"C.NGT.S"); type=FCOMP; break;
8369           }
8370           break;
8371           case 0x11: strcpy(insn[i],"C1.D"); type=NI;
8372           switch(source[i]&0x3f)
8373           {
8374             case 0x00: strcpy(insn[i],"ADD.D"); type=FLOAT; break;
8375             case 0x01: strcpy(insn[i],"SUB.D"); type=FLOAT; break;
8376             case 0x02: strcpy(insn[i],"MUL.D"); type=FLOAT; break;
8377             case 0x03: strcpy(insn[i],"DIV.D"); type=FLOAT; break;
8378             case 0x04: strcpy(insn[i],"SQRT.D"); type=FLOAT; break;
8379             case 0x05: strcpy(insn[i],"ABS.D"); type=FLOAT; break;
8380             case 0x06: strcpy(insn[i],"MOV.D"); type=FLOAT; break;
8381             case 0x07: strcpy(insn[i],"NEG.D"); type=FLOAT; break;
8382             case 0x08: strcpy(insn[i],"ROUND.L.D"); type=FCONV; break;
8383             case 0x09: strcpy(insn[i],"TRUNC.L.D"); type=FCONV; break;
8384             case 0x0A: strcpy(insn[i],"CEIL.L.D"); type=FCONV; break;
8385             case 0x0B: strcpy(insn[i],"FLOOR.L.D"); type=FCONV; break;
8386             case 0x0C: strcpy(insn[i],"ROUND.W.D"); type=FCONV; break;
8387             case 0x0D: strcpy(insn[i],"TRUNC.W.D"); type=FCONV; break;
8388             case 0x0E: strcpy(insn[i],"CEIL.W.D"); type=FCONV; break;
8389             case 0x0F: strcpy(insn[i],"FLOOR.W.D"); type=FCONV; break;
8390             case 0x20: strcpy(insn[i],"CVT.S.D"); type=FCONV; break;
8391             case 0x24: strcpy(insn[i],"CVT.W.D"); type=FCONV; break;
8392             case 0x25: strcpy(insn[i],"CVT.L.D"); type=FCONV; break;
8393             case 0x30: strcpy(insn[i],"C.F.D"); type=FCOMP; break;
8394             case 0x31: strcpy(insn[i],"C.UN.D"); type=FCOMP; break;
8395             case 0x32: strcpy(insn[i],"C.EQ.D"); type=FCOMP; break;
8396             case 0x33: strcpy(insn[i],"C.UEQ.D"); type=FCOMP; break;
8397             case 0x34: strcpy(insn[i],"C.OLT.D"); type=FCOMP; break;
8398             case 0x35: strcpy(insn[i],"C.ULT.D"); type=FCOMP; break;
8399             case 0x36: strcpy(insn[i],"C.OLE.D"); type=FCOMP; break;
8400             case 0x37: strcpy(insn[i],"C.ULE.D"); type=FCOMP; break;
8401             case 0x38: strcpy(insn[i],"C.SF.D"); type=FCOMP; break;
8402             case 0x39: strcpy(insn[i],"C.NGLE.D"); type=FCOMP; break;
8403             case 0x3A: strcpy(insn[i],"C.SEQ.D"); type=FCOMP; break;
8404             case 0x3B: strcpy(insn[i],"C.NGL.D"); type=FCOMP; break;
8405             case 0x3C: strcpy(insn[i],"C.LT.D"); type=FCOMP; break;
8406             case 0x3D: strcpy(insn[i],"C.NGE.D"); type=FCOMP; break;
8407             case 0x3E: strcpy(insn[i],"C.LE.D"); type=FCOMP; break;
8408             case 0x3F: strcpy(insn[i],"C.NGT.D"); type=FCOMP; break;
8409           }
8410           break;
8411           case 0x14: strcpy(insn[i],"C1.W"); type=NI;
8412           switch(source[i]&0x3f)
8413           {
8414             case 0x20: strcpy(insn[i],"CVT.S.W"); type=FCONV; break;
8415             case 0x21: strcpy(insn[i],"CVT.D.W"); type=FCONV; break;
8416           }
8417           break;
8418           case 0x15: strcpy(insn[i],"C1.L"); type=NI;
8419           switch(source[i]&0x3f)
8420           {
8421             case 0x20: strcpy(insn[i],"CVT.S.L"); type=FCONV; break;
8422             case 0x21: strcpy(insn[i],"CVT.D.L"); type=FCONV; break;
8423           }
8424           break;
8425         }
8426         break;
8427 #ifndef FORCE32
8428       case 0x14: strcpy(insn[i],"BEQL"); type=CJUMP; break;
8429       case 0x15: strcpy(insn[i],"BNEL"); type=CJUMP; break;
8430       case 0x16: strcpy(insn[i],"BLEZL"); type=CJUMP; break;
8431       case 0x17: strcpy(insn[i],"BGTZL"); type=CJUMP; break;
8432       case 0x18: strcpy(insn[i],"DADDI"); type=IMM16; break;
8433       case 0x19: strcpy(insn[i],"DADDIU"); type=IMM16; break;
8434       case 0x1A: strcpy(insn[i],"LDL"); type=LOADLR; break;
8435       case 0x1B: strcpy(insn[i],"LDR"); type=LOADLR; break;
8436 #endif
8437       case 0x20: strcpy(insn[i],"LB"); type=LOAD; break;
8438       case 0x21: strcpy(insn[i],"LH"); type=LOAD; break;
8439       case 0x22: strcpy(insn[i],"LWL"); type=LOADLR; break;
8440       case 0x23: strcpy(insn[i],"LW"); type=LOAD; break;
8441       case 0x24: strcpy(insn[i],"LBU"); type=LOAD; break;
8442       case 0x25: strcpy(insn[i],"LHU"); type=LOAD; break;
8443       case 0x26: strcpy(insn[i],"LWR"); type=LOADLR; break;
8444 #ifndef FORCE32
8445       case 0x27: strcpy(insn[i],"LWU"); type=LOAD; break;
8446 #endif
8447       case 0x28: strcpy(insn[i],"SB"); type=STORE; break;
8448       case 0x29: strcpy(insn[i],"SH"); type=STORE; break;
8449       case 0x2A: strcpy(insn[i],"SWL"); type=STORELR; break;
8450       case 0x2B: strcpy(insn[i],"SW"); type=STORE; break;
8451 #ifndef FORCE32
8452       case 0x2C: strcpy(insn[i],"SDL"); type=STORELR; break;
8453       case 0x2D: strcpy(insn[i],"SDR"); type=STORELR; break;
8454 #endif
8455       case 0x2E: strcpy(insn[i],"SWR"); type=STORELR; break;
8456       case 0x2F: strcpy(insn[i],"CACHE"); type=NOP; break;
8457       case 0x30: strcpy(insn[i],"LL"); type=NI; break;
8458       case 0x31: strcpy(insn[i],"LWC1"); type=C1LS; break;
8459 #ifndef FORCE32
8460       case 0x34: strcpy(insn[i],"LLD"); type=NI; break;
8461       case 0x35: strcpy(insn[i],"LDC1"); type=C1LS; break;
8462       case 0x37: strcpy(insn[i],"LD"); type=LOAD; break;
8463 #endif
8464       case 0x38: strcpy(insn[i],"SC"); type=NI; break;
8465       case 0x39: strcpy(insn[i],"SWC1"); type=C1LS; break;
8466 #ifndef FORCE32
8467       case 0x3C: strcpy(insn[i],"SCD"); type=NI; break;
8468       case 0x3D: strcpy(insn[i],"SDC1"); type=C1LS; break;
8469       case 0x3F: strcpy(insn[i],"SD"); type=STORE; break;
8470 #endif
8471 #ifdef PCSX
8472       case 0x12: strcpy(insn[i],"COP2"); type=NI;
8473         op2=(source[i]>>21)&0x1f;
8474         //if (op2 & 0x10) {
8475         if (source[i]&0x3f) { // use this hack to support old savestates with patched gte insns
8476           if (gte_handlers[source[i]&0x3f]!=NULL) {
8477             if (gte_regnames[source[i]&0x3f]!=NULL)
8478               strcpy(insn[i],gte_regnames[source[i]&0x3f]);
8479             else
8480               snprintf(insn[i], sizeof(insn[i]), "COP2 %x", source[i]&0x3f);
8481             type=C2OP;
8482           }
8483         }
8484         else switch(op2)
8485         {
8486           case 0x00: strcpy(insn[i],"MFC2"); type=COP2; break;
8487           case 0x02: strcpy(insn[i],"CFC2"); type=COP2; break;
8488           case 0x04: strcpy(insn[i],"MTC2"); type=COP2; break;
8489           case 0x06: strcpy(insn[i],"CTC2"); type=COP2; break;
8490         }
8491         break;
8492       case 0x32: strcpy(insn[i],"LWC2"); type=C2LS; break;
8493       case 0x3A: strcpy(insn[i],"SWC2"); type=C2LS; break;
8494       case 0x3B: strcpy(insn[i],"HLECALL"); type=HLECALL; break;
8495 #endif
8496       default: strcpy(insn[i],"???"); type=NI;
8497         printf("NI %08x @%08x (%08x)\n", source[i], addr + i*4, addr);
8498         break;
8499     }
8500     itype[i]=type;
8501     opcode2[i]=op2;
8502     /* Get registers/immediates */
8503     lt1[i]=0;
8504     us1[i]=0;
8505     us2[i]=0;
8506     dep1[i]=0;
8507     dep2[i]=0;
8508     gte_rs[i]=gte_rt[i]=0;
8509     switch(type) {
8510       case LOAD:
8511         rs1[i]=(source[i]>>21)&0x1f;
8512         rs2[i]=0;
8513         rt1[i]=(source[i]>>16)&0x1f;
8514         rt2[i]=0;
8515         imm[i]=(short)source[i];
8516         break;
8517       case STORE:
8518       case STORELR:
8519         rs1[i]=(source[i]>>21)&0x1f;
8520         rs2[i]=(source[i]>>16)&0x1f;
8521         rt1[i]=0;
8522         rt2[i]=0;
8523         imm[i]=(short)source[i];
8524         if(op==0x2c||op==0x2d||op==0x3f) us1[i]=rs2[i]; // 64-bit SDL/SDR/SD
8525         break;
8526       case LOADLR:
8527         // LWL/LWR only load part of the register,
8528         // therefore the target register must be treated as a source too
8529         rs1[i]=(source[i]>>21)&0x1f;
8530         rs2[i]=(source[i]>>16)&0x1f;
8531         rt1[i]=(source[i]>>16)&0x1f;
8532         rt2[i]=0;
8533         imm[i]=(short)source[i];
8534         if(op==0x1a||op==0x1b) us1[i]=rs2[i]; // LDR/LDL
8535         if(op==0x26) dep1[i]=rt1[i]; // LWR
8536         break;
8537       case IMM16:
8538         if (op==0x0f) rs1[i]=0; // LUI instruction has no source register
8539         else rs1[i]=(source[i]>>21)&0x1f;
8540         rs2[i]=0;
8541         rt1[i]=(source[i]>>16)&0x1f;
8542         rt2[i]=0;
8543         if(op>=0x0c&&op<=0x0e) { // ANDI/ORI/XORI
8544           imm[i]=(unsigned short)source[i];
8545         }else{
8546           imm[i]=(short)source[i];
8547         }
8548         if(op==0x18||op==0x19) us1[i]=rs1[i]; // DADDI/DADDIU
8549         if(op==0x0a||op==0x0b) us1[i]=rs1[i]; // SLTI/SLTIU
8550         if(op==0x0d||op==0x0e) dep1[i]=rs1[i]; // ORI/XORI
8551         break;
8552       case UJUMP:
8553         rs1[i]=0;
8554         rs2[i]=0;
8555         rt1[i]=0;
8556         rt2[i]=0;
8557         // The JAL instruction writes to r31.
8558         if (op&1) {
8559           rt1[i]=31;
8560         }
8561         rs2[i]=CCREG;
8562         break;
8563       case RJUMP:
8564         rs1[i]=(source[i]>>21)&0x1f;
8565         rs2[i]=0;
8566         rt1[i]=0;
8567         rt2[i]=0;
8568         // The JALR instruction writes to rd.
8569         if (op2&1) {
8570           rt1[i]=(source[i]>>11)&0x1f;
8571         }
8572         rs2[i]=CCREG;
8573         break;
8574       case CJUMP:
8575         rs1[i]=(source[i]>>21)&0x1f;
8576         rs2[i]=(source[i]>>16)&0x1f;
8577         rt1[i]=0;
8578         rt2[i]=0;
8579         if(op&2) { // BGTZ/BLEZ
8580           rs2[i]=0;
8581         }
8582         us1[i]=rs1[i];
8583         us2[i]=rs2[i];
8584         likely[i]=op>>4;
8585         break;
8586       case SJUMP:
8587         rs1[i]=(source[i]>>21)&0x1f;
8588         rs2[i]=CCREG;
8589         rt1[i]=0;
8590         rt2[i]=0;
8591         us1[i]=rs1[i];
8592         if(op2&0x10) { // BxxAL
8593           rt1[i]=31;
8594           // NOTE: If the branch is not taken, r31 is still overwritten
8595         }
8596         likely[i]=(op2&2)>>1;
8597         break;
8598       case FJUMP:
8599         rs1[i]=FSREG;
8600         rs2[i]=CSREG;
8601         rt1[i]=0;
8602         rt2[i]=0;
8603         likely[i]=((source[i])>>17)&1;
8604         break;
8605       case ALU:
8606         rs1[i]=(source[i]>>21)&0x1f; // source
8607         rs2[i]=(source[i]>>16)&0x1f; // subtract amount
8608         rt1[i]=(source[i]>>11)&0x1f; // destination
8609         rt2[i]=0;
8610         if(op2==0x2a||op2==0x2b) { // SLT/SLTU
8611           us1[i]=rs1[i];us2[i]=rs2[i];
8612         }
8613         else if(op2>=0x24&&op2<=0x27) { // AND/OR/XOR/NOR
8614           dep1[i]=rs1[i];dep2[i]=rs2[i];
8615         }
8616         else if(op2>=0x2c&&op2<=0x2f) { // DADD/DSUB
8617           dep1[i]=rs1[i];dep2[i]=rs2[i];
8618         }
8619         break;
8620       case MULTDIV:
8621         rs1[i]=(source[i]>>21)&0x1f; // source
8622         rs2[i]=(source[i]>>16)&0x1f; // divisor
8623         rt1[i]=HIREG;
8624         rt2[i]=LOREG;
8625         if (op2>=0x1c&&op2<=0x1f) { // DMULT/DMULTU/DDIV/DDIVU
8626           us1[i]=rs1[i];us2[i]=rs2[i];
8627         }
8628         break;
8629       case MOV:
8630         rs1[i]=0;
8631         rs2[i]=0;
8632         rt1[i]=0;
8633         rt2[i]=0;
8634         if(op2==0x10) rs1[i]=HIREG; // MFHI
8635         if(op2==0x11) rt1[i]=HIREG; // MTHI
8636         if(op2==0x12) rs1[i]=LOREG; // MFLO
8637         if(op2==0x13) rt1[i]=LOREG; // MTLO
8638         if((op2&0x1d)==0x10) rt1[i]=(source[i]>>11)&0x1f; // MFxx
8639         if((op2&0x1d)==0x11) rs1[i]=(source[i]>>21)&0x1f; // MTxx
8640         dep1[i]=rs1[i];
8641         break;
8642       case SHIFT:
8643         rs1[i]=(source[i]>>16)&0x1f; // target of shift
8644         rs2[i]=(source[i]>>21)&0x1f; // shift amount
8645         rt1[i]=(source[i]>>11)&0x1f; // destination
8646         rt2[i]=0;
8647         // DSLLV/DSRLV/DSRAV are 64-bit
8648         if(op2>=0x14&&op2<=0x17) us1[i]=rs1[i];
8649         break;
8650       case SHIFTIMM:
8651         rs1[i]=(source[i]>>16)&0x1f;
8652         rs2[i]=0;
8653         rt1[i]=(source[i]>>11)&0x1f;
8654         rt2[i]=0;
8655         imm[i]=(source[i]>>6)&0x1f;
8656         // DSxx32 instructions
8657         if(op2>=0x3c) imm[i]|=0x20;
8658         // DSLL/DSRL/DSRA/DSRA32/DSRL32 but not DSLL32 require 64-bit source
8659         if(op2>=0x38&&op2!=0x3c) us1[i]=rs1[i];
8660         break;
8661       case COP0:
8662         rs1[i]=0;
8663         rs2[i]=0;
8664         rt1[i]=0;
8665         rt2[i]=0;
8666         if(op2==0) rt1[i]=(source[i]>>16)&0x1F; // MFC0
8667         if(op2==4) rs1[i]=(source[i]>>16)&0x1F; // MTC0
8668         if(op2==4&&((source[i]>>11)&0x1f)==12) rt2[i]=CSREG; // Status
8669         if(op2==16) if((source[i]&0x3f)==0x18) rs2[i]=CCREG; // ERET
8670         break;
8671       case COP1:
8672         rs1[i]=0;
8673         rs2[i]=0;
8674         rt1[i]=0;
8675         rt2[i]=0;
8676         if(op2<3) rt1[i]=(source[i]>>16)&0x1F; // MFC1/DMFC1/CFC1
8677         if(op2>3) rs1[i]=(source[i]>>16)&0x1F; // MTC1/DMTC1/CTC1
8678         if(op2==5) us1[i]=rs1[i]; // DMTC1
8679         rs2[i]=CSREG;
8680         break;
8681       case COP2:
8682         rs1[i]=0;
8683         rs2[i]=0;
8684         rt1[i]=0;
8685         rt2[i]=0;
8686         if(op2<3) rt1[i]=(source[i]>>16)&0x1F; // MFC2/CFC2
8687         if(op2>3) rs1[i]=(source[i]>>16)&0x1F; // MTC2/CTC2
8688         rs2[i]=CSREG;
8689         int gr=(source[i]>>11)&0x1F;
8690         switch(op2)
8691         {
8692           case 0x00: gte_rs[i]=1ll<<gr; break; // MFC2
8693           case 0x04: gte_rt[i]=1ll<<gr; break; // MTC2
8694           case 0x02: gte_rs[i]=1ll<<(gr+32); break; // CFC2
8695           case 0x06: gte_rt[i]=1ll<<(gr+32); break; // CTC2
8696         }
8697         break;
8698       case C1LS:
8699         rs1[i]=(source[i]>>21)&0x1F;
8700         rs2[i]=CSREG;
8701         rt1[i]=0;
8702         rt2[i]=0;
8703         imm[i]=(short)source[i];
8704         break;
8705       case C2LS:
8706         rs1[i]=(source[i]>>21)&0x1F;
8707         rs2[i]=0;
8708         rt1[i]=0;
8709         rt2[i]=0;
8710         imm[i]=(short)source[i];
8711         if(op==0x32) gte_rt[i]=1ll<<((source[i]>>16)&0x1F); // LWC2
8712         else gte_rs[i]=1ll<<((source[i]>>16)&0x1F); // SWC2
8713         break;
8714       case C2OP:
8715         rs1[i]=0;
8716         rs2[i]=0;
8717         rt1[i]=0;
8718         rt2[i]=0;
8719         gte_rs[i]=gte_reg_reads[source[i]&0x3f];
8720         gte_rt[i]=gte_reg_writes[source[i]&0x3f];
8721         gte_rt[i]|=1ll<<63; // every op changes flags
8722         if((source[i]&0x3f)==GTE_MVMVA) {
8723           int v = (source[i] >> 15) & 3;
8724           gte_rs[i]&=~0xe3fll;
8725           if(v==3) gte_rs[i]|=0xe00ll;
8726           else gte_rs[i]|=3ll<<(v*2);
8727         }
8728         break;
8729       case FLOAT:
8730       case FCONV:
8731         rs1[i]=0;
8732         rs2[i]=CSREG;
8733         rt1[i]=0;
8734         rt2[i]=0;
8735         break;
8736       case FCOMP:
8737         rs1[i]=FSREG;
8738         rs2[i]=CSREG;
8739         rt1[i]=FSREG;
8740         rt2[i]=0;
8741         break;
8742       case SYSCALL:
8743       case HLECALL:
8744       case INTCALL:
8745         rs1[i]=CCREG;
8746         rs2[i]=0;
8747         rt1[i]=0;
8748         rt2[i]=0;
8749         break;
8750       default:
8751         rs1[i]=0;
8752         rs2[i]=0;
8753         rt1[i]=0;
8754         rt2[i]=0;
8755     }
8756     /* Calculate branch target addresses */
8757     if(type==UJUMP)
8758       ba[i]=((start+i*4+4)&0xF0000000)|(((unsigned int)source[i]<<6)>>4);
8759     else if(type==CJUMP&&rs1[i]==rs2[i]&&(op&1))
8760       ba[i]=start+i*4+8; // Ignore never taken branch
8761     else if(type==SJUMP&&rs1[i]==0&&!(op2&1))
8762       ba[i]=start+i*4+8; // Ignore never taken branch
8763     else if(type==CJUMP||type==SJUMP||type==FJUMP)
8764       ba[i]=start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14);
8765     else ba[i]=-1;
8766 #ifdef PCSX
8767     if(i>0&&(itype[i-1]==RJUMP||itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP)) {
8768       int do_in_intrp=0;
8769       // branch in delay slot?
8770       if(type==RJUMP||type==UJUMP||type==CJUMP||type==SJUMP||type==FJUMP) {
8771         // don't handle first branch and call interpreter if it's hit
8772         printf("branch in delay slot @%08x (%08x)\n", addr + i*4, addr);
8773         do_in_intrp=1;
8774       }
8775       // basic load delay detection
8776       else if((type==LOAD||type==LOADLR||type==COP0||type==COP2||type==C2LS)&&rt1[i]!=0) {
8777         int t=(ba[i-1]-start)/4;
8778         if(0 <= t && t < i &&(rt1[i]==rs1[t]||rt1[i]==rs2[t])&&itype[t]!=CJUMP&&itype[t]!=SJUMP) {
8779           // jump target wants DS result - potential load delay effect
8780           printf("load delay @%08x (%08x)\n", addr + i*4, addr);
8781           do_in_intrp=1;
8782           bt[t+1]=1; // expected return from interpreter
8783         }
8784         else if(i>=2&&rt1[i-2]==2&&rt1[i]==2&&rs1[i]!=2&&rs2[i]!=2&&rs1[i-1]!=2&&rs2[i-1]!=2&&
8785               !(i>=3&&(itype[i-3]==RJUMP||itype[i-3]==UJUMP||itype[i-3]==CJUMP||itype[i-3]==SJUMP))) {
8786           // v0 overwrite like this is a sign of trouble, bail out
8787           printf("v0 overwrite @%08x (%08x)\n", addr + i*4, addr);
8788           do_in_intrp=1;
8789         }
8790       }
8791       if(do_in_intrp) {
8792         rs1[i-1]=CCREG;
8793         rs2[i-1]=rt1[i-1]=rt2[i-1]=0;
8794         ba[i-1]=-1;
8795         itype[i-1]=INTCALL;
8796         done=2;
8797         i--; // don't compile the DS
8798       }
8799     }
8800 #endif
8801     /* Is this the end of the block? */
8802     if(i>0&&(itype[i-1]==UJUMP||itype[i-1]==RJUMP||(source[i-1]>>16)==0x1000)) {
8803       if(rt1[i-1]==0) { // Continue past subroutine call (JAL)
8804         done=2;
8805       }
8806       else {
8807         if(stop_after_jal) done=1;
8808         // Stop on BREAK
8809         if((source[i+1]&0xfc00003f)==0x0d) done=1;
8810       }
8811       // Don't recompile stuff that's already compiled
8812       if(check_addr(start+i*4+4)) done=1;
8813       // Don't get too close to the limit
8814       if(i>MAXBLOCK/2) done=1;
8815     }
8816     if(itype[i]==SYSCALL&&stop_after_jal) done=1;
8817     if(itype[i]==HLECALL||itype[i]==INTCALL) done=2;
8818     if(done==2) {
8819       // Does the block continue due to a branch?
8820       for(j=i-1;j>=0;j--)
8821       {
8822         if(ba[j]==start+i*4) done=j=0; // Branch into delay slot
8823         if(ba[j]==start+i*4+4) done=j=0;
8824         if(ba[j]==start+i*4+8) done=j=0;
8825       }
8826     }
8827     //assert(i<MAXBLOCK-1);
8828     if(start+i*4==pagelimit-4) done=1;
8829     assert(start+i*4<pagelimit);
8830     if (i==MAXBLOCK-1) done=1;
8831     // Stop if we're compiling junk
8832     if(itype[i]==NI&&opcode[i]==0x11) {
8833       done=stop_after_jal=1;
8834       printf("Disabled speculative precompilation\n");
8835     }
8836   }
8837   slen=i;
8838   if(itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==RJUMP||itype[i-1]==FJUMP) {
8839     if(start+i*4==pagelimit) {
8840       itype[i-1]=SPAN;
8841     }
8842   }
8843   assert(slen>0);
8844
8845   /* Pass 2 - Register dependencies and branch targets */
8846
8847   unneeded_registers(0,slen-1,0);
8848
8849   /* Pass 3 - Register allocation */
8850
8851   struct regstat current; // Current register allocations/status
8852   current.is32=1;
8853   current.dirty=0;
8854   current.u=unneeded_reg[0];
8855   current.uu=unneeded_reg_upper[0];
8856   clear_all_regs(current.regmap);
8857   alloc_reg(&current,0,CCREG);
8858   dirty_reg(&current,CCREG);
8859   current.isconst=0;
8860   current.wasconst=0;
8861   current.waswritten=0;
8862   int ds=0;
8863   int cc=0;
8864   int hr=-1;
8865
8866 #ifndef FORCE32
8867   provisional_32bit();
8868 #endif
8869   if((u_int)addr&1) {
8870     // First instruction is delay slot
8871     cc=-1;
8872     bt[1]=1;
8873     ds=1;
8874     unneeded_reg[0]=1;
8875     unneeded_reg_upper[0]=1;
8876     current.regmap[HOST_BTREG]=BTREG;
8877   }
8878
8879   for(i=0;i<slen;i++)
8880   {
8881     if(bt[i])
8882     {
8883       int hr;
8884       for(hr=0;hr<HOST_REGS;hr++)
8885       {
8886         // Is this really necessary?
8887         if(current.regmap[hr]==0) current.regmap[hr]=-1;
8888       }
8889       current.isconst=0;
8890       current.waswritten=0;
8891     }
8892     if(i>1)
8893     {
8894       if((opcode[i-2]&0x2f)==0x05) // BNE/BNEL
8895       {
8896         if(rs1[i-2]==0||rs2[i-2]==0)
8897         {
8898           if(rs1[i-2]) {
8899             current.is32|=1LL<<rs1[i-2];
8900             int hr=get_reg(current.regmap,rs1[i-2]|64);
8901             if(hr>=0) current.regmap[hr]=-1;
8902           }
8903           if(rs2[i-2]) {
8904             current.is32|=1LL<<rs2[i-2];
8905             int hr=get_reg(current.regmap,rs2[i-2]|64);
8906             if(hr>=0) current.regmap[hr]=-1;
8907           }
8908         }
8909       }
8910     }
8911 #ifndef FORCE32
8912     // If something jumps here with 64-bit values
8913     // then promote those registers to 64 bits
8914     if(bt[i])
8915     {
8916       uint64_t temp_is32=current.is32;
8917       for(j=i-1;j>=0;j--)
8918       {
8919         if(ba[j]==start+i*4)
8920           temp_is32&=branch_regs[j].is32;
8921       }
8922       for(j=i;j<slen;j++)
8923       {
8924         if(ba[j]==start+i*4)
8925           //temp_is32=1;
8926           temp_is32&=p32[j];
8927       }
8928       if(temp_is32!=current.is32) {
8929         //printf("dumping 32-bit regs (%x)\n",start+i*4);
8930         #ifndef DESTRUCTIVE_WRITEBACK
8931         if(ds)
8932         #endif
8933         for(hr=0;hr<HOST_REGS;hr++)
8934         {
8935           int r=current.regmap[hr];
8936           if(r>0&&r<64)
8937           {
8938             if((current.dirty>>hr)&((current.is32&~temp_is32)>>r)&1) {
8939               temp_is32|=1LL<<r;
8940               //printf("restore %d\n",r);
8941             }
8942           }
8943         }
8944         current.is32=temp_is32;
8945       }
8946     }
8947 #else
8948     current.is32=-1LL;
8949 #endif
8950
8951     memcpy(regmap_pre[i],current.regmap,sizeof(current.regmap));
8952     regs[i].wasconst=current.isconst;
8953     regs[i].was32=current.is32;
8954     regs[i].wasdirty=current.dirty;
8955     regs[i].loadedconst=0;
8956     #if defined(DESTRUCTIVE_WRITEBACK) && !defined(FORCE32)
8957     // To change a dirty register from 32 to 64 bits, we must write
8958     // it out during the previous cycle (for branches, 2 cycles)
8959     if(i<slen-1&&bt[i+1]&&itype[i-1]!=UJUMP&&itype[i-1]!=CJUMP&&itype[i-1]!=SJUMP&&itype[i-1]!=RJUMP&&itype[i-1]!=FJUMP)
8960     {
8961       uint64_t temp_is32=current.is32;
8962       for(j=i-1;j>=0;j--)
8963       {
8964         if(ba[j]==start+i*4+4)
8965           temp_is32&=branch_regs[j].is32;
8966       }
8967       for(j=i;j<slen;j++)
8968       {
8969         if(ba[j]==start+i*4+4)
8970           //temp_is32=1;
8971           temp_is32&=p32[j];
8972       }
8973       if(temp_is32!=current.is32) {
8974         //printf("pre-dumping 32-bit regs (%x)\n",start+i*4);
8975         for(hr=0;hr<HOST_REGS;hr++)
8976         {
8977           int r=current.regmap[hr];
8978           if(r>0)
8979           {
8980             if((current.dirty>>hr)&((current.is32&~temp_is32)>>(r&63))&1) {
8981               if(itype[i]!=UJUMP&&itype[i]!=CJUMP&&itype[i]!=SJUMP&&itype[i]!=RJUMP&&itype[i]!=FJUMP)
8982               {
8983                 if(rs1[i]!=(r&63)&&rs2[i]!=(r&63))
8984                 {
8985                   //printf("dump %d/r%d\n",hr,r);
8986                   current.regmap[hr]=-1;
8987                   if(get_reg(current.regmap,r|64)>=0)
8988                     current.regmap[get_reg(current.regmap,r|64)]=-1;
8989                 }
8990               }
8991             }
8992           }
8993         }
8994       }
8995     }
8996     else if(i<slen-2&&bt[i+2]&&(source[i-1]>>16)!=0x1000&&(itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP))
8997     {
8998       uint64_t temp_is32=current.is32;
8999       for(j=i-1;j>=0;j--)
9000       {
9001         if(ba[j]==start+i*4+8)
9002           temp_is32&=branch_regs[j].is32;
9003       }
9004       for(j=i;j<slen;j++)
9005       {
9006         if(ba[j]==start+i*4+8)
9007           //temp_is32=1;
9008           temp_is32&=p32[j];
9009       }
9010       if(temp_is32!=current.is32) {
9011         //printf("pre-dumping 32-bit regs (%x)\n",start+i*4);
9012         for(hr=0;hr<HOST_REGS;hr++)
9013         {
9014           int r=current.regmap[hr];
9015           if(r>0)
9016           {
9017             if((current.dirty>>hr)&((current.is32&~temp_is32)>>(r&63))&1) {
9018               if(rs1[i]!=(r&63)&&rs2[i]!=(r&63)&&rs1[i+1]!=(r&63)&&rs2[i+1]!=(r&63))
9019               {
9020                 //printf("dump %d/r%d\n",hr,r);
9021                 current.regmap[hr]=-1;
9022                 if(get_reg(current.regmap,r|64)>=0)
9023                   current.regmap[get_reg(current.regmap,r|64)]=-1;
9024               }
9025             }
9026           }
9027         }
9028       }
9029     }
9030     #endif
9031     if(itype[i]!=UJUMP&&itype[i]!=CJUMP&&itype[i]!=SJUMP&&itype[i]!=RJUMP&&itype[i]!=FJUMP) {
9032       if(i+1<slen) {
9033         current.u=unneeded_reg[i+1]&~((1LL<<rs1[i])|(1LL<<rs2[i]));
9034         current.uu=unneeded_reg_upper[i+1]&~((1LL<<us1[i])|(1LL<<us2[i]));
9035         if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9036         current.u|=1;
9037         current.uu|=1;
9038       } else {
9039         current.u=1;
9040         current.uu=1;
9041       }
9042     } else {
9043       if(i+1<slen) {
9044         current.u=branch_unneeded_reg[i]&~((1LL<<rs1[i+1])|(1LL<<rs2[i+1]));
9045         current.uu=branch_unneeded_reg_upper[i]&~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
9046         if((~current.uu>>rt1[i+1])&1) current.uu&=~((1LL<<dep1[i+1])|(1LL<<dep2[i+1]));
9047         current.u&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
9048         current.uu&=~((1LL<<us1[i])|(1LL<<us2[i]));
9049         current.u|=1;
9050         current.uu|=1;
9051       } else { printf("oops, branch at end of block with no delay slot\n");exit(1); }
9052     }
9053     is_ds[i]=ds;
9054     if(ds) {
9055       ds=0; // Skip delay slot, already allocated as part of branch
9056       // ...but we need to alloc it in case something jumps here
9057       if(i+1<slen) {
9058         current.u=branch_unneeded_reg[i-1]&unneeded_reg[i+1];
9059         current.uu=branch_unneeded_reg_upper[i-1]&unneeded_reg_upper[i+1];
9060       }else{
9061         current.u=branch_unneeded_reg[i-1];
9062         current.uu=branch_unneeded_reg_upper[i-1];
9063       }
9064       current.u&=~((1LL<<rs1[i])|(1LL<<rs2[i]));
9065       current.uu&=~((1LL<<us1[i])|(1LL<<us2[i]));
9066       if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9067       current.u|=1;
9068       current.uu|=1;
9069       struct regstat temp;
9070       memcpy(&temp,&current,sizeof(current));
9071       temp.wasdirty=temp.dirty;
9072       temp.was32=temp.is32;
9073       // TODO: Take into account unconditional branches, as below
9074       delayslot_alloc(&temp,i);
9075       memcpy(regs[i].regmap,temp.regmap,sizeof(temp.regmap));
9076       regs[i].wasdirty=temp.wasdirty;
9077       regs[i].was32=temp.was32;
9078       regs[i].dirty=temp.dirty;
9079       regs[i].is32=temp.is32;
9080       regs[i].isconst=0;
9081       regs[i].wasconst=0;
9082       current.isconst=0;
9083       // Create entry (branch target) regmap
9084       for(hr=0;hr<HOST_REGS;hr++)
9085       {
9086         int r=temp.regmap[hr];
9087         if(r>=0) {
9088           if(r!=regmap_pre[i][hr]) {
9089             regs[i].regmap_entry[hr]=-1;
9090           }
9091           else
9092           {
9093             if(r<64){
9094               if((current.u>>r)&1) {
9095                 regs[i].regmap_entry[hr]=-1;
9096                 regs[i].regmap[hr]=-1;
9097                 //Don't clear regs in the delay slot as the branch might need them
9098                 //current.regmap[hr]=-1;
9099               }else
9100                 regs[i].regmap_entry[hr]=r;
9101             }
9102             else {
9103               if((current.uu>>(r&63))&1) {
9104                 regs[i].regmap_entry[hr]=-1;
9105                 regs[i].regmap[hr]=-1;
9106                 //Don't clear regs in the delay slot as the branch might need them
9107                 //current.regmap[hr]=-1;
9108               }else
9109                 regs[i].regmap_entry[hr]=r;
9110             }
9111           }
9112         } else {
9113           // First instruction expects CCREG to be allocated
9114           if(i==0&&hr==HOST_CCREG)
9115             regs[i].regmap_entry[hr]=CCREG;
9116           else
9117             regs[i].regmap_entry[hr]=-1;
9118         }
9119       }
9120     }
9121     else { // Not delay slot
9122       switch(itype[i]) {
9123         case UJUMP:
9124           //current.isconst=0; // DEBUG
9125           //current.wasconst=0; // DEBUG
9126           //regs[i].wasconst=0; // DEBUG
9127           clear_const(&current,rt1[i]);
9128           alloc_cc(&current,i);
9129           dirty_reg(&current,CCREG);
9130           if (rt1[i]==31) {
9131             alloc_reg(&current,i,31);
9132             dirty_reg(&current,31);
9133             //assert(rs1[i+1]!=31&&rs2[i+1]!=31);
9134             //assert(rt1[i+1]!=rt1[i]);
9135             #ifdef REG_PREFETCH
9136             alloc_reg(&current,i,PTEMP);
9137             #endif
9138             //current.is32|=1LL<<rt1[i];
9139           }
9140           ooo[i]=1;
9141           delayslot_alloc(&current,i+1);
9142           //current.isconst=0; // DEBUG
9143           ds=1;
9144           //printf("i=%d, isconst=%x\n",i,current.isconst);
9145           break;
9146         case RJUMP:
9147           //current.isconst=0;
9148           //current.wasconst=0;
9149           //regs[i].wasconst=0;
9150           clear_const(&current,rs1[i]);
9151           clear_const(&current,rt1[i]);
9152           alloc_cc(&current,i);
9153           dirty_reg(&current,CCREG);
9154           if(rs1[i]!=rt1[i+1]&&rs1[i]!=rt2[i+1]) {
9155             alloc_reg(&current,i,rs1[i]);
9156             if (rt1[i]!=0) {
9157               alloc_reg(&current,i,rt1[i]);
9158               dirty_reg(&current,rt1[i]);
9159               assert(rs1[i+1]!=rt1[i]&&rs2[i+1]!=rt1[i]);
9160               assert(rt1[i+1]!=rt1[i]);
9161               #ifdef REG_PREFETCH
9162               alloc_reg(&current,i,PTEMP);
9163               #endif
9164             }
9165             #ifdef USE_MINI_HT
9166             if(rs1[i]==31) { // JALR
9167               alloc_reg(&current,i,RHASH);
9168               #ifndef HOST_IMM_ADDR32
9169               alloc_reg(&current,i,RHTBL);
9170               #endif
9171             }
9172             #endif
9173             delayslot_alloc(&current,i+1);
9174           } else {
9175             // The delay slot overwrites our source register,
9176             // allocate a temporary register to hold the old value.
9177             current.isconst=0;
9178             current.wasconst=0;
9179             regs[i].wasconst=0;
9180             delayslot_alloc(&current,i+1);
9181             current.isconst=0;
9182             alloc_reg(&current,i,RTEMP);
9183           }
9184           //current.isconst=0; // DEBUG
9185           ooo[i]=1;
9186           ds=1;
9187           break;
9188         case CJUMP:
9189           //current.isconst=0;
9190           //current.wasconst=0;
9191           //regs[i].wasconst=0;
9192           clear_const(&current,rs1[i]);
9193           clear_const(&current,rs2[i]);
9194           if((opcode[i]&0x3E)==4) // BEQ/BNE
9195           {
9196             alloc_cc(&current,i);
9197             dirty_reg(&current,CCREG);
9198             if(rs1[i]) alloc_reg(&current,i,rs1[i]);
9199             if(rs2[i]) alloc_reg(&current,i,rs2[i]);
9200             if(!((current.is32>>rs1[i])&(current.is32>>rs2[i])&1))
9201             {
9202               if(rs1[i]) alloc_reg64(&current,i,rs1[i]);
9203               if(rs2[i]) alloc_reg64(&current,i,rs2[i]);
9204             }
9205             if((rs1[i]&&(rs1[i]==rt1[i+1]||rs1[i]==rt2[i+1]))||
9206                (rs2[i]&&(rs2[i]==rt1[i+1]||rs2[i]==rt2[i+1]))) {
9207               // The delay slot overwrites one of our conditions.
9208               // Allocate the branch condition registers instead.
9209               current.isconst=0;
9210               current.wasconst=0;
9211               regs[i].wasconst=0;
9212               if(rs1[i]) alloc_reg(&current,i,rs1[i]);
9213               if(rs2[i]) alloc_reg(&current,i,rs2[i]);
9214               if(!((current.is32>>rs1[i])&(current.is32>>rs2[i])&1))
9215               {
9216                 if(rs1[i]) alloc_reg64(&current,i,rs1[i]);
9217                 if(rs2[i]) alloc_reg64(&current,i,rs2[i]);
9218               }
9219             }
9220             else
9221             {
9222               ooo[i]=1;
9223               delayslot_alloc(&current,i+1);
9224             }
9225           }
9226           else
9227           if((opcode[i]&0x3E)==6) // BLEZ/BGTZ
9228           {
9229             alloc_cc(&current,i);
9230             dirty_reg(&current,CCREG);
9231             alloc_reg(&current,i,rs1[i]);
9232             if(!(current.is32>>rs1[i]&1))
9233             {
9234               alloc_reg64(&current,i,rs1[i]);
9235             }
9236             if(rs1[i]&&(rs1[i]==rt1[i+1]||rs1[i]==rt2[i+1])) {
9237               // The delay slot overwrites one of our conditions.
9238               // Allocate the branch condition registers instead.
9239               current.isconst=0;
9240               current.wasconst=0;
9241               regs[i].wasconst=0;
9242               if(rs1[i]) alloc_reg(&current,i,rs1[i]);
9243               if(!((current.is32>>rs1[i])&1))
9244               {
9245                 if(rs1[i]) alloc_reg64(&current,i,rs1[i]);
9246               }
9247             }
9248             else
9249             {
9250               ooo[i]=1;
9251               delayslot_alloc(&current,i+1);
9252             }
9253           }
9254           else
9255           // Don't alloc the delay slot yet because we might not execute it
9256           if((opcode[i]&0x3E)==0x14) // BEQL/BNEL
9257           {
9258             current.isconst=0;
9259             current.wasconst=0;
9260             regs[i].wasconst=0;
9261             alloc_cc(&current,i);
9262             dirty_reg(&current,CCREG);
9263             alloc_reg(&current,i,rs1[i]);
9264             alloc_reg(&current,i,rs2[i]);
9265             if(!((current.is32>>rs1[i])&(current.is32>>rs2[i])&1))
9266             {
9267               alloc_reg64(&current,i,rs1[i]);
9268               alloc_reg64(&current,i,rs2[i]);
9269             }
9270           }
9271           else
9272           if((opcode[i]&0x3E)==0x16) // BLEZL/BGTZL
9273           {
9274             current.isconst=0;
9275             current.wasconst=0;
9276             regs[i].wasconst=0;
9277             alloc_cc(&current,i);
9278             dirty_reg(&current,CCREG);
9279             alloc_reg(&current,i,rs1[i]);
9280             if(!(current.is32>>rs1[i]&1))
9281             {
9282               alloc_reg64(&current,i,rs1[i]);
9283             }
9284           }
9285           ds=1;
9286           //current.isconst=0;
9287           break;
9288         case SJUMP:
9289           //current.isconst=0;
9290           //current.wasconst=0;
9291           //regs[i].wasconst=0;
9292           clear_const(&current,rs1[i]);
9293           clear_const(&current,rt1[i]);
9294           //if((opcode2[i]&0x1E)==0x0) // BLTZ/BGEZ
9295           if((opcode2[i]&0x0E)==0x0) // BLTZ/BGEZ
9296           {
9297             alloc_cc(&current,i);
9298             dirty_reg(&current,CCREG);
9299             alloc_reg(&current,i,rs1[i]);
9300             if(!(current.is32>>rs1[i]&1))
9301             {
9302               alloc_reg64(&current,i,rs1[i]);
9303             }
9304             if (rt1[i]==31) { // BLTZAL/BGEZAL
9305               alloc_reg(&current,i,31);
9306               dirty_reg(&current,31);
9307               //#ifdef REG_PREFETCH
9308               //alloc_reg(&current,i,PTEMP);
9309               //#endif
9310               //current.is32|=1LL<<rt1[i];
9311             }
9312             if((rs1[i]&&(rs1[i]==rt1[i+1]||rs1[i]==rt2[i+1])) // The delay slot overwrites the branch condition.
9313                ||(rt1[i]==31&&(rs1[i+1]==31||rs2[i+1]==31||rt1[i+1]==31||rt2[i+1]==31))) { // DS touches $ra
9314               // Allocate the branch condition registers instead.
9315               current.isconst=0;
9316               current.wasconst=0;
9317               regs[i].wasconst=0;
9318               if(rs1[i]) alloc_reg(&current,i,rs1[i]);
9319               if(!((current.is32>>rs1[i])&1))
9320               {
9321                 if(rs1[i]) alloc_reg64(&current,i,rs1[i]);
9322               }
9323             }
9324             else
9325             {
9326               ooo[i]=1;
9327               delayslot_alloc(&current,i+1);
9328             }
9329           }
9330           else
9331           // Don't alloc the delay slot yet because we might not execute it
9332           if((opcode2[i]&0x1E)==0x2) // BLTZL/BGEZL
9333           {
9334             current.isconst=0;
9335             current.wasconst=0;
9336             regs[i].wasconst=0;
9337             alloc_cc(&current,i);
9338             dirty_reg(&current,CCREG);
9339             alloc_reg(&current,i,rs1[i]);
9340             if(!(current.is32>>rs1[i]&1))
9341             {
9342               alloc_reg64(&current,i,rs1[i]);
9343             }
9344           }
9345           ds=1;
9346           //current.isconst=0;
9347           break;
9348         case FJUMP:
9349           current.isconst=0;
9350           current.wasconst=0;
9351           regs[i].wasconst=0;
9352           if(likely[i]==0) // BC1F/BC1T
9353           {
9354             // TODO: Theoretically we can run out of registers here on x86.
9355             // The delay slot can allocate up to six, and we need to check
9356             // CSREG before executing the delay slot.  Possibly we can drop
9357             // the cycle count and then reload it after checking that the
9358             // FPU is in a usable state, or don't do out-of-order execution.
9359             alloc_cc(&current,i);
9360             dirty_reg(&current,CCREG);
9361             alloc_reg(&current,i,FSREG);
9362             alloc_reg(&current,i,CSREG);
9363             if(itype[i+1]==FCOMP) {
9364               // The delay slot overwrites the branch condition.
9365               // Allocate the branch condition registers instead.
9366               alloc_cc(&current,i);
9367               dirty_reg(&current,CCREG);
9368               alloc_reg(&current,i,CSREG);
9369               alloc_reg(&current,i,FSREG);
9370             }
9371             else {
9372               ooo[i]=1;
9373               delayslot_alloc(&current,i+1);
9374               alloc_reg(&current,i+1,CSREG);
9375             }
9376           }
9377           else
9378           // Don't alloc the delay slot yet because we might not execute it
9379           if(likely[i]) // BC1FL/BC1TL
9380           {
9381             alloc_cc(&current,i);
9382             dirty_reg(&current,CCREG);
9383             alloc_reg(&current,i,CSREG);
9384             alloc_reg(&current,i,FSREG);
9385           }
9386           ds=1;
9387           current.isconst=0;
9388           break;
9389         case IMM16:
9390           imm16_alloc(&current,i);
9391           break;
9392         case LOAD:
9393         case LOADLR:
9394           load_alloc(&current,i);
9395           break;
9396         case STORE:
9397         case STORELR:
9398           store_alloc(&current,i);
9399           break;
9400         case ALU:
9401           alu_alloc(&current,i);
9402           break;
9403         case SHIFT:
9404           shift_alloc(&current,i);
9405           break;
9406         case MULTDIV:
9407           multdiv_alloc(&current,i);
9408           break;
9409         case SHIFTIMM:
9410           shiftimm_alloc(&current,i);
9411           break;
9412         case MOV:
9413           mov_alloc(&current,i);
9414           break;
9415         case COP0:
9416           cop0_alloc(&current,i);
9417           break;
9418         case COP1:
9419         case COP2:
9420           cop1_alloc(&current,i);
9421           break;
9422         case C1LS:
9423           c1ls_alloc(&current,i);
9424           break;
9425         case C2LS:
9426           c2ls_alloc(&current,i);
9427           break;
9428         case C2OP:
9429           c2op_alloc(&current,i);
9430           break;
9431         case FCONV:
9432           fconv_alloc(&current,i);
9433           break;
9434         case FLOAT:
9435           float_alloc(&current,i);
9436           break;
9437         case FCOMP:
9438           fcomp_alloc(&current,i);
9439           break;
9440         case SYSCALL:
9441         case HLECALL:
9442         case INTCALL:
9443           syscall_alloc(&current,i);
9444           break;
9445         case SPAN:
9446           pagespan_alloc(&current,i);
9447           break;
9448       }
9449
9450       // Drop the upper half of registers that have become 32-bit
9451       current.uu|=current.is32&((1LL<<rt1[i])|(1LL<<rt2[i]));
9452       if(itype[i]!=UJUMP&&itype[i]!=CJUMP&&itype[i]!=SJUMP&&itype[i]!=RJUMP&&itype[i]!=FJUMP) {
9453         current.uu&=~((1LL<<us1[i])|(1LL<<us2[i]));
9454         if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9455         current.uu|=1;
9456       } else {
9457         current.uu|=current.is32&((1LL<<rt1[i+1])|(1LL<<rt2[i+1]));
9458         current.uu&=~((1LL<<us1[i+1])|(1LL<<us2[i+1]));
9459         if((~current.uu>>rt1[i+1])&1) current.uu&=~((1LL<<dep1[i+1])|(1LL<<dep2[i+1]));
9460         current.uu&=~((1LL<<us1[i])|(1LL<<us2[i]));
9461         current.uu|=1;
9462       }
9463
9464       // Create entry (branch target) regmap
9465       for(hr=0;hr<HOST_REGS;hr++)
9466       {
9467         int r,or,er;
9468         r=current.regmap[hr];
9469         if(r>=0) {
9470           if(r!=regmap_pre[i][hr]) {
9471             // TODO: delay slot (?)
9472             or=get_reg(regmap_pre[i],r); // Get old mapping for this register
9473             if(or<0||(r&63)>=TEMPREG){
9474               regs[i].regmap_entry[hr]=-1;
9475             }
9476             else
9477             {
9478               // Just move it to a different register
9479               regs[i].regmap_entry[hr]=r;
9480               // If it was dirty before, it's still dirty
9481               if((regs[i].wasdirty>>or)&1) dirty_reg(&current,r&63);
9482             }
9483           }
9484           else
9485           {
9486             // Unneeded
9487             if(r==0){
9488               regs[i].regmap_entry[hr]=0;
9489             }
9490             else
9491             if(r<64){
9492               if((current.u>>r)&1) {
9493                 regs[i].regmap_entry[hr]=-1;
9494                 //regs[i].regmap[hr]=-1;
9495                 current.regmap[hr]=-1;
9496               }else
9497                 regs[i].regmap_entry[hr]=r;
9498             }
9499             else {
9500               if((current.uu>>(r&63))&1) {
9501                 regs[i].regmap_entry[hr]=-1;
9502                 //regs[i].regmap[hr]=-1;
9503                 current.regmap[hr]=-1;
9504               }else
9505                 regs[i].regmap_entry[hr]=r;
9506             }
9507           }
9508         } else {
9509           // Branches expect CCREG to be allocated at the target
9510           if(regmap_pre[i][hr]==CCREG)
9511             regs[i].regmap_entry[hr]=CCREG;
9512           else
9513             regs[i].regmap_entry[hr]=-1;
9514         }
9515       }
9516       memcpy(regs[i].regmap,current.regmap,sizeof(current.regmap));
9517     }
9518
9519     if(i>0&&(itype[i-1]==STORE||itype[i-1]==STORELR||(itype[i-1]==C2LS&&opcode[i-1]==0x3a))&&(u_int)imm[i-1]<0x800)
9520       current.waswritten|=1<<rs1[i-1];
9521     current.waswritten&=~(1<<rt1[i]);
9522     current.waswritten&=~(1<<rt2[i]);
9523     if((itype[i]==STORE||itype[i]==STORELR||(itype[i]==C2LS&&opcode[i]==0x3a))&&(u_int)imm[i]>=0x800)
9524       current.waswritten&=~(1<<rs1[i]);
9525
9526     /* Branch post-alloc */
9527     if(i>0)
9528     {
9529       current.was32=current.is32;
9530       current.wasdirty=current.dirty;
9531       switch(itype[i-1]) {
9532         case UJUMP:
9533           memcpy(&branch_regs[i-1],&current,sizeof(current));
9534           branch_regs[i-1].isconst=0;
9535           branch_regs[i-1].wasconst=0;
9536           branch_regs[i-1].u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i-1])|(1LL<<rs2[i-1]));
9537           branch_regs[i-1].uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i-1])|(1LL<<us2[i-1]));
9538           alloc_cc(&branch_regs[i-1],i-1);
9539           dirty_reg(&branch_regs[i-1],CCREG);
9540           if(rt1[i-1]==31) { // JAL
9541             alloc_reg(&branch_regs[i-1],i-1,31);
9542             dirty_reg(&branch_regs[i-1],31);
9543             branch_regs[i-1].is32|=1LL<<31;
9544           }
9545           memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9546           memcpy(constmap[i],constmap[i-1],sizeof(current_constmap));
9547           break;
9548         case RJUMP:
9549           memcpy(&branch_regs[i-1],&current,sizeof(current));
9550           branch_regs[i-1].isconst=0;
9551           branch_regs[i-1].wasconst=0;
9552           branch_regs[i-1].u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i-1])|(1LL<<rs2[i-1]));
9553           branch_regs[i-1].uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i-1])|(1LL<<us2[i-1]));
9554           alloc_cc(&branch_regs[i-1],i-1);
9555           dirty_reg(&branch_regs[i-1],CCREG);
9556           alloc_reg(&branch_regs[i-1],i-1,rs1[i-1]);
9557           if(rt1[i-1]!=0) { // JALR
9558             alloc_reg(&branch_regs[i-1],i-1,rt1[i-1]);
9559             dirty_reg(&branch_regs[i-1],rt1[i-1]);
9560             branch_regs[i-1].is32|=1LL<<rt1[i-1];
9561           }
9562           #ifdef USE_MINI_HT
9563           if(rs1[i-1]==31) { // JALR
9564             alloc_reg(&branch_regs[i-1],i-1,RHASH);
9565             #ifndef HOST_IMM_ADDR32
9566             alloc_reg(&branch_regs[i-1],i-1,RHTBL);
9567             #endif
9568           }
9569           #endif
9570           memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9571           memcpy(constmap[i],constmap[i-1],sizeof(current_constmap));
9572           break;
9573         case CJUMP:
9574           if((opcode[i-1]&0x3E)==4) // BEQ/BNE
9575           {
9576             alloc_cc(&current,i-1);
9577             dirty_reg(&current,CCREG);
9578             if((rs1[i-1]&&(rs1[i-1]==rt1[i]||rs1[i-1]==rt2[i]))||
9579                (rs2[i-1]&&(rs2[i-1]==rt1[i]||rs2[i-1]==rt2[i]))) {
9580               // The delay slot overwrote one of our conditions
9581               // Delay slot goes after the test (in order)
9582               current.u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i]));
9583               current.uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i]));
9584               if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9585               current.u|=1;
9586               current.uu|=1;
9587               delayslot_alloc(&current,i);
9588               current.isconst=0;
9589             }
9590             else
9591             {
9592               current.u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i-1])|(1LL<<rs2[i-1]));
9593               current.uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i-1])|(1LL<<us2[i-1]));
9594               // Alloc the branch condition registers
9595               if(rs1[i-1]) alloc_reg(&current,i-1,rs1[i-1]);
9596               if(rs2[i-1]) alloc_reg(&current,i-1,rs2[i-1]);
9597               if(!((current.is32>>rs1[i-1])&(current.is32>>rs2[i-1])&1))
9598               {
9599                 if(rs1[i-1]) alloc_reg64(&current,i-1,rs1[i-1]);
9600                 if(rs2[i-1]) alloc_reg64(&current,i-1,rs2[i-1]);
9601               }
9602             }
9603             memcpy(&branch_regs[i-1],&current,sizeof(current));
9604             branch_regs[i-1].isconst=0;
9605             branch_regs[i-1].wasconst=0;
9606             memcpy(&branch_regs[i-1].regmap_entry,&current.regmap,sizeof(current.regmap));
9607             memcpy(constmap[i],constmap[i-1],sizeof(current_constmap));
9608           }
9609           else
9610           if((opcode[i-1]&0x3E)==6) // BLEZ/BGTZ
9611           {
9612             alloc_cc(&current,i-1);
9613             dirty_reg(&current,CCREG);
9614             if(rs1[i-1]==rt1[i]||rs1[i-1]==rt2[i]) {
9615               // The delay slot overwrote the branch condition
9616               // Delay slot goes after the test (in order)
9617               current.u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i]));
9618               current.uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i]));
9619               if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9620               current.u|=1;
9621               current.uu|=1;
9622               delayslot_alloc(&current,i);
9623               current.isconst=0;
9624             }
9625             else
9626             {
9627               current.u=branch_unneeded_reg[i-1]&~(1LL<<rs1[i-1]);
9628               current.uu=branch_unneeded_reg_upper[i-1]&~(1LL<<us1[i-1]);
9629               // Alloc the branch condition register
9630               alloc_reg(&current,i-1,rs1[i-1]);
9631               if(!(current.is32>>rs1[i-1]&1))
9632               {
9633                 alloc_reg64(&current,i-1,rs1[i-1]);
9634               }
9635             }
9636             memcpy(&branch_regs[i-1],&current,sizeof(current));
9637             branch_regs[i-1].isconst=0;
9638             branch_regs[i-1].wasconst=0;
9639             memcpy(&branch_regs[i-1].regmap_entry,&current.regmap,sizeof(current.regmap));
9640             memcpy(constmap[i],constmap[i-1],sizeof(current_constmap));
9641           }
9642           else
9643           // Alloc the delay slot in case the branch is taken
9644           if((opcode[i-1]&0x3E)==0x14) // BEQL/BNEL
9645           {
9646             memcpy(&branch_regs[i-1],&current,sizeof(current));
9647             branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9648             branch_regs[i-1].uu=(branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9649             if((~branch_regs[i-1].uu>>rt1[i])&1) branch_regs[i-1].uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]))|1;
9650             alloc_cc(&branch_regs[i-1],i);
9651             dirty_reg(&branch_regs[i-1],CCREG);
9652             delayslot_alloc(&branch_regs[i-1],i);
9653             branch_regs[i-1].isconst=0;
9654             alloc_reg(&current,i,CCREG); // Not taken path
9655             dirty_reg(&current,CCREG);
9656             memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9657           }
9658           else
9659           if((opcode[i-1]&0x3E)==0x16) // BLEZL/BGTZL
9660           {
9661             memcpy(&branch_regs[i-1],&current,sizeof(current));
9662             branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9663             branch_regs[i-1].uu=(branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9664             if((~branch_regs[i-1].uu>>rt1[i])&1) branch_regs[i-1].uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]))|1;
9665             alloc_cc(&branch_regs[i-1],i);
9666             dirty_reg(&branch_regs[i-1],CCREG);
9667             delayslot_alloc(&branch_regs[i-1],i);
9668             branch_regs[i-1].isconst=0;
9669             alloc_reg(&current,i,CCREG); // Not taken path
9670             dirty_reg(&current,CCREG);
9671             memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9672           }
9673           break;
9674         case SJUMP:
9675           //if((opcode2[i-1]&0x1E)==0) // BLTZ/BGEZ
9676           if((opcode2[i-1]&0x0E)==0) // BLTZ/BGEZ
9677           {
9678             alloc_cc(&current,i-1);
9679             dirty_reg(&current,CCREG);
9680             if(rs1[i-1]==rt1[i]||rs1[i-1]==rt2[i]) {
9681               // The delay slot overwrote the branch condition
9682               // Delay slot goes after the test (in order)
9683               current.u=branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i]));
9684               current.uu=branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i]));
9685               if((~current.uu>>rt1[i])&1) current.uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]));
9686               current.u|=1;
9687               current.uu|=1;
9688               delayslot_alloc(&current,i);
9689               current.isconst=0;
9690             }
9691             else
9692             {
9693               current.u=branch_unneeded_reg[i-1]&~(1LL<<rs1[i-1]);
9694               current.uu=branch_unneeded_reg_upper[i-1]&~(1LL<<us1[i-1]);
9695               // Alloc the branch condition register
9696               alloc_reg(&current,i-1,rs1[i-1]);
9697               if(!(current.is32>>rs1[i-1]&1))
9698               {
9699                 alloc_reg64(&current,i-1,rs1[i-1]);
9700               }
9701             }
9702             memcpy(&branch_regs[i-1],&current,sizeof(current));
9703             branch_regs[i-1].isconst=0;
9704             branch_regs[i-1].wasconst=0;
9705             memcpy(&branch_regs[i-1].regmap_entry,&current.regmap,sizeof(current.regmap));
9706             memcpy(constmap[i],constmap[i-1],sizeof(current_constmap));
9707           }
9708           else
9709           // Alloc the delay slot in case the branch is taken
9710           if((opcode2[i-1]&0x1E)==2) // BLTZL/BGEZL
9711           {
9712             memcpy(&branch_regs[i-1],&current,sizeof(current));
9713             branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9714             branch_regs[i-1].uu=(branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9715             if((~branch_regs[i-1].uu>>rt1[i])&1) branch_regs[i-1].uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]))|1;
9716             alloc_cc(&branch_regs[i-1],i);
9717             dirty_reg(&branch_regs[i-1],CCREG);
9718             delayslot_alloc(&branch_regs[i-1],i);
9719             branch_regs[i-1].isconst=0;
9720             alloc_reg(&current,i,CCREG); // Not taken path
9721             dirty_reg(&current,CCREG);
9722             memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9723           }
9724           // FIXME: BLTZAL/BGEZAL
9725           if(opcode2[i-1]&0x10) { // BxxZAL
9726             alloc_reg(&branch_regs[i-1],i-1,31);
9727             dirty_reg(&branch_regs[i-1],31);
9728             branch_regs[i-1].is32|=1LL<<31;
9729           }
9730           break;
9731         case FJUMP:
9732           if(likely[i-1]==0) // BC1F/BC1T
9733           {
9734             alloc_cc(&current,i-1);
9735             dirty_reg(&current,CCREG);
9736             if(itype[i]==FCOMP) {
9737               // The delay slot overwrote the branch condition
9738               // Delay slot goes after the test (in order)
9739               delayslot_alloc(&current,i);
9740               current.isconst=0;
9741             }
9742             else
9743             {
9744               current.u=branch_unneeded_reg[i-1]&~(1LL<<rs1[i-1]);
9745               current.uu=branch_unneeded_reg_upper[i-1]&~(1LL<<us1[i-1]);
9746               // Alloc the branch condition register
9747               alloc_reg(&current,i-1,FSREG);
9748             }
9749             memcpy(&branch_regs[i-1],&current,sizeof(current));
9750             memcpy(&branch_regs[i-1].regmap_entry,&current.regmap,sizeof(current.regmap));
9751           }
9752           else // BC1FL/BC1TL
9753           {
9754             // Alloc the delay slot in case the branch is taken
9755             memcpy(&branch_regs[i-1],&current,sizeof(current));
9756             branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<rs1[i])|(1LL<<rs2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9757             branch_regs[i-1].uu=(branch_unneeded_reg_upper[i-1]&~((1LL<<us1[i])|(1LL<<us2[i])|(1LL<<rt1[i])|(1LL<<rt2[i])))|1;
9758             if((~branch_regs[i-1].uu>>rt1[i])&1) branch_regs[i-1].uu&=~((1LL<<dep1[i])|(1LL<<dep2[i]))|1;
9759             alloc_cc(&branch_regs[i-1],i);
9760             dirty_reg(&branch_regs[i-1],CCREG);
9761             delayslot_alloc(&branch_regs[i-1],i);
9762             branch_regs[i-1].isconst=0;
9763             alloc_reg(&current,i,CCREG); // Not taken path
9764             dirty_reg(&current,CCREG);
9765             memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap));
9766           }
9767           break;
9768       }
9769
9770       if(itype[i-1]==UJUMP||itype[i-1]==RJUMP||(source[i-1]>>16)==0x1000)
9771       {
9772         if(rt1[i-1]==31) // JAL/JALR
9773         {
9774           // Subroutine call will return here, don't alloc any registers
9775           current.is32=1;
9776           current.dirty=0;
9777           clear_all_regs(current.regmap);
9778           alloc_reg(&current,i,CCREG);
9779           dirty_reg(&current,CCREG);
9780         }
9781         else if(i+1<slen)
9782         {
9783           // Internal branch will jump here, match registers to caller
9784           current.is32=0x3FFFFFFFFLL;
9785           current.dirty=0;
9786           clear_all_regs(current.regmap);
9787           alloc_reg(&current,i,CCREG);
9788           dirty_reg(&current,CCREG);
9789           for(j=i-1;j>=0;j--)
9790           {
9791             if(ba[j]==start+i*4+4) {
9792               memcpy(current.regmap,branch_regs[j].regmap,sizeof(current.regmap));
9793               current.is32=branch_regs[j].is32;
9794               current.dirty=branch_regs[j].dirty;
9795               break;
9796             }
9797           }
9798           while(j>=0) {
9799             if(ba[j]==start+i*4+4) {
9800               for(hr=0;hr<HOST_REGS;hr++) {
9801                 if(current.regmap[hr]!=branch_regs[j].regmap[hr]) {
9802                   current.regmap[hr]=-1;
9803                 }
9804                 current.is32&=branch_regs[j].is32;
9805                 current.dirty&=branch_regs[j].dirty;
9806               }
9807             }
9808             j--;
9809           }
9810         }
9811       }
9812     }
9813
9814     // Count cycles in between branches
9815     ccadj[i]=cc;
9816     if(i>0&&(itype[i-1]==RJUMP||itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP||itype[i]==SYSCALL||itype[i]==HLECALL))
9817     {
9818       cc=0;
9819     }
9820 #if defined(PCSX) && !defined(DRC_DBG)
9821     else if(itype[i]==C2OP&&gte_cycletab[source[i]&0x3f]>2)
9822     {
9823       // GTE runs in parallel until accessed, divide by 2 for a rough guess
9824       cc+=gte_cycletab[source[i]&0x3f]/2;
9825     }
9826     else if(/*itype[i]==LOAD||*/itype[i]==STORE||itype[i]==C1LS) // load causes weird timing issues
9827     {
9828       cc+=2; // 2 cycle penalty (after CLOCK_DIVIDER)
9829     }
9830     else if(itype[i]==C2LS)
9831     {
9832       cc+=4;
9833     }
9834 #endif
9835     else
9836     {
9837       cc++;
9838     }
9839
9840     flush_dirty_uppers(&current);
9841     if(!is_ds[i]) {
9842       regs[i].is32=current.is32;
9843       regs[i].dirty=current.dirty;
9844       regs[i].isconst=current.isconst;
9845       memcpy(constmap[i],current_constmap,sizeof(current_constmap));
9846     }
9847     for(hr=0;hr<HOST_REGS;hr++) {
9848       if(hr!=EXCLUDE_REG&&regs[i].regmap[hr]>=0) {
9849         if(regmap_pre[i][hr]!=regs[i].regmap[hr]) {
9850           regs[i].wasconst&=~(1<<hr);
9851         }
9852       }
9853     }
9854     if(current.regmap[HOST_BTREG]==BTREG) current.regmap[HOST_BTREG]=-1;
9855     regs[i].waswritten=current.waswritten;
9856   }
9857
9858   /* Pass 4 - Cull unused host registers */
9859
9860   uint64_t nr=0;
9861
9862   for (i=slen-1;i>=0;i--)
9863   {
9864     int hr;
9865     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
9866     {
9867       if(ba[i]<start || ba[i]>=(start+slen*4))
9868       {
9869         // Branch out of this block, don't need anything
9870         nr=0;
9871       }
9872       else
9873       {
9874         // Internal branch
9875         // Need whatever matches the target
9876         nr=0;
9877         int t=(ba[i]-start)>>2;
9878         for(hr=0;hr<HOST_REGS;hr++)
9879         {
9880           if(regs[i].regmap_entry[hr]>=0) {
9881             if(regs[i].regmap_entry[hr]==regs[t].regmap_entry[hr]) nr|=1<<hr;
9882           }
9883         }
9884       }
9885       // Conditional branch may need registers for following instructions
9886       if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000)
9887       {
9888         if(i<slen-2) {
9889           nr|=needed_reg[i+2];
9890           for(hr=0;hr<HOST_REGS;hr++)
9891           {
9892             if(regmap_pre[i+2][hr]>=0&&get_reg(regs[i+2].regmap_entry,regmap_pre[i+2][hr])<0) nr&=~(1<<hr);
9893             //if((regmap_entry[i+2][hr])>=0) if(!((nr>>hr)&1)) printf("%x-bogus(%d=%d)\n",start+i*4,hr,regmap_entry[i+2][hr]);
9894           }
9895         }
9896       }
9897       // Don't need stuff which is overwritten
9898       //if(regs[i].regmap[hr]!=regmap_pre[i][hr]) nr&=~(1<<hr);
9899       //if(regs[i].regmap[hr]<0) nr&=~(1<<hr);
9900       // Merge in delay slot
9901       for(hr=0;hr<HOST_REGS;hr++)
9902       {
9903         if(!likely[i]) {
9904           // These are overwritten unless the branch is "likely"
9905           // and the delay slot is nullified if not taken
9906           if(rt1[i+1]&&rt1[i+1]==(regs[i].regmap[hr]&63)) nr&=~(1<<hr);
9907           if(rt2[i+1]&&rt2[i+1]==(regs[i].regmap[hr]&63)) nr&=~(1<<hr);
9908         }
9909         if(us1[i+1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9910         if(us2[i+1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9911         if(rs1[i+1]==regmap_pre[i][hr]) nr|=1<<hr;
9912         if(rs2[i+1]==regmap_pre[i][hr]) nr|=1<<hr;
9913         if(us1[i+1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9914         if(us2[i+1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9915         if(rs1[i+1]==regs[i].regmap_entry[hr]) nr|=1<<hr;
9916         if(rs2[i+1]==regs[i].regmap_entry[hr]) nr|=1<<hr;
9917         if(dep1[i+1]&&!((unneeded_reg_upper[i]>>dep1[i+1])&1)) {
9918           if(dep1[i+1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9919           if(dep2[i+1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9920         }
9921         if(dep2[i+1]&&!((unneeded_reg_upper[i]>>dep2[i+1])&1)) {
9922           if(dep1[i+1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9923           if(dep2[i+1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9924         }
9925         if(itype[i+1]==STORE || itype[i+1]==STORELR || (opcode[i+1]&0x3b)==0x39 || (opcode[i+1]&0x3b)==0x3a) {
9926           if(regmap_pre[i][hr]==INVCP) nr|=1<<hr;
9927           if(regs[i].regmap_entry[hr]==INVCP) nr|=1<<hr;
9928         }
9929       }
9930     }
9931     else if(itype[i]==SYSCALL||itype[i]==HLECALL||itype[i]==INTCALL)
9932     {
9933       // SYSCALL instruction (software interrupt)
9934       nr=0;
9935     }
9936     else if(itype[i]==COP0 && (source[i]&0x3f)==0x18)
9937     {
9938       // ERET instruction (return from interrupt)
9939       nr=0;
9940     }
9941     else // Non-branch
9942     {
9943       if(i<slen-1) {
9944         for(hr=0;hr<HOST_REGS;hr++) {
9945           if(regmap_pre[i+1][hr]>=0&&get_reg(regs[i+1].regmap_entry,regmap_pre[i+1][hr])<0) nr&=~(1<<hr);
9946           if(regs[i].regmap[hr]!=regmap_pre[i+1][hr]) nr&=~(1<<hr);
9947           if(regs[i].regmap[hr]!=regmap_pre[i][hr]) nr&=~(1<<hr);
9948           if(regs[i].regmap[hr]<0) nr&=~(1<<hr);
9949         }
9950       }
9951     }
9952     for(hr=0;hr<HOST_REGS;hr++)
9953     {
9954       // Overwritten registers are not needed
9955       if(rt1[i]&&rt1[i]==(regs[i].regmap[hr]&63)) nr&=~(1<<hr);
9956       if(rt2[i]&&rt2[i]==(regs[i].regmap[hr]&63)) nr&=~(1<<hr);
9957       if(FTEMP==(regs[i].regmap[hr]&63)) nr&=~(1<<hr);
9958       // Source registers are needed
9959       if(us1[i]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9960       if(us2[i]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9961       if(rs1[i]==regmap_pre[i][hr]) nr|=1<<hr;
9962       if(rs2[i]==regmap_pre[i][hr]) nr|=1<<hr;
9963       if(us1[i]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9964       if(us2[i]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9965       if(rs1[i]==regs[i].regmap_entry[hr]) nr|=1<<hr;
9966       if(rs2[i]==regs[i].regmap_entry[hr]) nr|=1<<hr;
9967       if(dep1[i]&&!((unneeded_reg_upper[i]>>dep1[i])&1)) {
9968         if(dep1[i]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9969         if(dep1[i]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9970       }
9971       if(dep2[i]&&!((unneeded_reg_upper[i]>>dep2[i])&1)) {
9972         if(dep2[i]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9973         if(dep2[i]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9974       }
9975       if(itype[i]==STORE || itype[i]==STORELR || (opcode[i]&0x3b)==0x39 || (opcode[i]&0x3b)==0x3a) {
9976         if(regmap_pre[i][hr]==INVCP) nr|=1<<hr;
9977         if(regs[i].regmap_entry[hr]==INVCP) nr|=1<<hr;
9978       }
9979       // Don't store a register immediately after writing it,
9980       // may prevent dual-issue.
9981       // But do so if this is a branch target, otherwise we
9982       // might have to load the register before the branch.
9983       if(i>0&&!bt[i]&&((regs[i].wasdirty>>hr)&1)) {
9984         if((regmap_pre[i][hr]>0&&regmap_pre[i][hr]<64&&!((unneeded_reg[i]>>regmap_pre[i][hr])&1)) ||
9985            (regmap_pre[i][hr]>64&&!((unneeded_reg_upper[i]>>(regmap_pre[i][hr]&63))&1)) ) {
9986           if(rt1[i-1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9987           if(rt2[i-1]==(regmap_pre[i][hr]&63)) nr|=1<<hr;
9988         }
9989         if((regs[i].regmap_entry[hr]>0&&regs[i].regmap_entry[hr]<64&&!((unneeded_reg[i]>>regs[i].regmap_entry[hr])&1)) ||
9990            (regs[i].regmap_entry[hr]>64&&!((unneeded_reg_upper[i]>>(regs[i].regmap_entry[hr]&63))&1)) ) {
9991           if(rt1[i-1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9992           if(rt2[i-1]==(regs[i].regmap_entry[hr]&63)) nr|=1<<hr;
9993         }
9994       }
9995     }
9996     // Cycle count is needed at branches.  Assume it is needed at the target too.
9997     if(i==0||bt[i]||itype[i]==CJUMP||itype[i]==FJUMP||itype[i]==SPAN) {
9998       if(regmap_pre[i][HOST_CCREG]==CCREG) nr|=1<<HOST_CCREG;
9999       if(regs[i].regmap_entry[HOST_CCREG]==CCREG) nr|=1<<HOST_CCREG;
10000     }
10001     // Save it
10002     needed_reg[i]=nr;
10003
10004     // Deallocate unneeded registers
10005     for(hr=0;hr<HOST_REGS;hr++)
10006     {
10007       if(!((nr>>hr)&1)) {
10008         if(regs[i].regmap_entry[hr]!=CCREG) regs[i].regmap_entry[hr]=-1;
10009         if((regs[i].regmap[hr]&63)!=rs1[i] && (regs[i].regmap[hr]&63)!=rs2[i] &&
10010            (regs[i].regmap[hr]&63)!=rt1[i] && (regs[i].regmap[hr]&63)!=rt2[i] &&
10011            (regs[i].regmap[hr]&63)!=PTEMP && (regs[i].regmap[hr]&63)!=CCREG)
10012         {
10013           if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000)
10014           {
10015             if(likely[i]) {
10016               regs[i].regmap[hr]=-1;
10017               regs[i].isconst&=~(1<<hr);
10018               if(i<slen-2) {
10019                 regmap_pre[i+2][hr]=-1;
10020                 regs[i+2].wasconst&=~(1<<hr);
10021               }
10022             }
10023           }
10024         }
10025         if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
10026         {
10027           int d1=0,d2=0,map=0,temp=0;
10028           if(get_reg(regs[i].regmap,rt1[i+1]|64)>=0||get_reg(branch_regs[i].regmap,rt1[i+1]|64)>=0)
10029           {
10030             d1=dep1[i+1];
10031             d2=dep2[i+1];
10032           }
10033           if(using_tlb) {
10034             if(itype[i+1]==LOAD || itype[i+1]==LOADLR ||
10035                itype[i+1]==STORE || itype[i+1]==STORELR ||
10036                itype[i+1]==C1LS || itype[i+1]==C2LS)
10037             map=TLREG;
10038           } else
10039           if(itype[i+1]==STORE || itype[i+1]==STORELR ||
10040              (opcode[i+1]&0x3b)==0x39 || (opcode[i+1]&0x3b)==0x3a) { // SWC1/SDC1 || SWC2/SDC2
10041             map=INVCP;
10042           }
10043           if(itype[i+1]==LOADLR || itype[i+1]==STORELR ||
10044              itype[i+1]==C1LS || itype[i+1]==C2LS)
10045             temp=FTEMP;
10046           if((regs[i].regmap[hr]&63)!=rs1[i] && (regs[i].regmap[hr]&63)!=rs2[i] &&
10047              (regs[i].regmap[hr]&63)!=rt1[i] && (regs[i].regmap[hr]&63)!=rt2[i] &&
10048              (regs[i].regmap[hr]&63)!=rt1[i+1] && (regs[i].regmap[hr]&63)!=rt2[i+1] &&
10049              (regs[i].regmap[hr]^64)!=us1[i+1] && (regs[i].regmap[hr]^64)!=us2[i+1] &&
10050              (regs[i].regmap[hr]^64)!=d1 && (regs[i].regmap[hr]^64)!=d2 &&
10051              regs[i].regmap[hr]!=rs1[i+1] && regs[i].regmap[hr]!=rs2[i+1] &&
10052              (regs[i].regmap[hr]&63)!=temp && regs[i].regmap[hr]!=PTEMP &&
10053              regs[i].regmap[hr]!=RHASH && regs[i].regmap[hr]!=RHTBL &&
10054              regs[i].regmap[hr]!=RTEMP && regs[i].regmap[hr]!=CCREG &&
10055              regs[i].regmap[hr]!=map )
10056           {
10057             regs[i].regmap[hr]=-1;
10058             regs[i].isconst&=~(1<<hr);
10059             if((branch_regs[i].regmap[hr]&63)!=rs1[i] && (branch_regs[i].regmap[hr]&63)!=rs2[i] &&
10060                (branch_regs[i].regmap[hr]&63)!=rt1[i] && (branch_regs[i].regmap[hr]&63)!=rt2[i] &&
10061                (branch_regs[i].regmap[hr]&63)!=rt1[i+1] && (branch_regs[i].regmap[hr]&63)!=rt2[i+1] &&
10062                (branch_regs[i].regmap[hr]^64)!=us1[i+1] && (branch_regs[i].regmap[hr]^64)!=us2[i+1] &&
10063                (branch_regs[i].regmap[hr]^64)!=d1 && (branch_regs[i].regmap[hr]^64)!=d2 &&
10064                branch_regs[i].regmap[hr]!=rs1[i+1] && branch_regs[i].regmap[hr]!=rs2[i+1] &&
10065                (branch_regs[i].regmap[hr]&63)!=temp && branch_regs[i].regmap[hr]!=PTEMP &&
10066                branch_regs[i].regmap[hr]!=RHASH && branch_regs[i].regmap[hr]!=RHTBL &&
10067                branch_regs[i].regmap[hr]!=RTEMP && branch_regs[i].regmap[hr]!=CCREG &&
10068                branch_regs[i].regmap[hr]!=map)
10069             {
10070               branch_regs[i].regmap[hr]=-1;
10071               branch_regs[i].regmap_entry[hr]=-1;
10072               if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000)
10073               {
10074                 if(!likely[i]&&i<slen-2) {
10075                   regmap_pre[i+2][hr]=-1;
10076                   regs[i+2].wasconst&=~(1<<hr);
10077                 }
10078               }
10079             }
10080           }
10081         }
10082         else
10083         {
10084           // Non-branch
10085           if(i>0)
10086           {
10087             int d1=0,d2=0,map=-1,temp=-1;
10088             if(get_reg(regs[i].regmap,rt1[i]|64)>=0)
10089             {
10090               d1=dep1[i];
10091               d2=dep2[i];
10092             }
10093             if(using_tlb) {
10094               if(itype[i]==LOAD || itype[i]==LOADLR ||
10095                  itype[i]==STORE || itype[i]==STORELR ||
10096                  itype[i]==C1LS || itype[i]==C2LS)
10097               map=TLREG;
10098             } else if(itype[i]==STORE || itype[i]==STORELR ||
10099                       (opcode[i]&0x3b)==0x39 || (opcode[i]&0x3b)==0x3a) { // SWC1/SDC1 || SWC2/SDC2
10100               map=INVCP;
10101             }
10102             if(itype[i]==LOADLR || itype[i]==STORELR ||
10103                itype[i]==C1LS || itype[i]==C2LS)
10104               temp=FTEMP;
10105             if((regs[i].regmap[hr]&63)!=rt1[i] && (regs[i].regmap[hr]&63)!=rt2[i] &&
10106                (regs[i].regmap[hr]^64)!=us1[i] && (regs[i].regmap[hr]^64)!=us2[i] &&
10107                (regs[i].regmap[hr]^64)!=d1 && (regs[i].regmap[hr]^64)!=d2 &&
10108                regs[i].regmap[hr]!=rs1[i] && regs[i].regmap[hr]!=rs2[i] &&
10109                (regs[i].regmap[hr]&63)!=temp && regs[i].regmap[hr]!=map &&
10110                (itype[i]!=SPAN||regs[i].regmap[hr]!=CCREG))
10111             {
10112               if(i<slen-1&&!is_ds[i]) {
10113                 if(regmap_pre[i+1][hr]!=-1 || regs[i].regmap[hr]!=-1)
10114                 if(regmap_pre[i+1][hr]!=regs[i].regmap[hr])
10115                 if(regs[i].regmap[hr]<64||!((regs[i].was32>>(regs[i].regmap[hr]&63))&1))
10116                 {
10117                   printf("fail: %x (%d %d!=%d)\n",start+i*4,hr,regmap_pre[i+1][hr],regs[i].regmap[hr]);
10118                   assert(regmap_pre[i+1][hr]==regs[i].regmap[hr]);
10119                 }
10120                 regmap_pre[i+1][hr]=-1;
10121                 if(regs[i+1].regmap_entry[hr]==CCREG) regs[i+1].regmap_entry[hr]=-1;
10122                 regs[i+1].wasconst&=~(1<<hr);
10123               }
10124               regs[i].regmap[hr]=-1;
10125               regs[i].isconst&=~(1<<hr);
10126             }
10127           }
10128         }
10129       }
10130     }
10131   }
10132
10133   /* Pass 5 - Pre-allocate registers */
10134
10135   // If a register is allocated during a loop, try to allocate it for the
10136   // entire loop, if possible.  This avoids loading/storing registers
10137   // inside of the loop.
10138
10139   signed char f_regmap[HOST_REGS];
10140   clear_all_regs(f_regmap);
10141   for(i=0;i<slen-1;i++)
10142   {
10143     if(itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
10144     {
10145       if(ba[i]>=start && ba[i]<(start+i*4))
10146       if(itype[i+1]==NOP||itype[i+1]==MOV||itype[i+1]==ALU
10147       ||itype[i+1]==SHIFTIMM||itype[i+1]==IMM16||itype[i+1]==LOAD
10148       ||itype[i+1]==STORE||itype[i+1]==STORELR||itype[i+1]==C1LS
10149       ||itype[i+1]==SHIFT||itype[i+1]==COP1||itype[i+1]==FLOAT
10150       ||itype[i+1]==FCOMP||itype[i+1]==FCONV
10151       ||itype[i+1]==COP2||itype[i+1]==C2LS||itype[i+1]==C2OP)
10152       {
10153         int t=(ba[i]-start)>>2;
10154         if(t>0&&(itype[t-1]!=UJUMP&&itype[t-1]!=RJUMP&&itype[t-1]!=CJUMP&&itype[t-1]!=SJUMP&&itype[t-1]!=FJUMP)) // loop_preload can't handle jumps into delay slots
10155         if(t<2||(itype[t-2]!=UJUMP&&itype[t-2]!=RJUMP)||rt1[t-2]!=31) // call/ret assumes no registers allocated
10156         for(hr=0;hr<HOST_REGS;hr++)
10157         {
10158           if(regs[i].regmap[hr]>64) {
10159             if(!((regs[i].dirty>>hr)&1))
10160               f_regmap[hr]=regs[i].regmap[hr];
10161             else f_regmap[hr]=-1;
10162           }
10163           else if(regs[i].regmap[hr]>=0) {
10164             if(f_regmap[hr]!=regs[i].regmap[hr]) {
10165               // dealloc old register
10166               int n;
10167               for(n=0;n<HOST_REGS;n++)
10168               {
10169                 if(f_regmap[n]==regs[i].regmap[hr]) {f_regmap[n]=-1;}
10170               }
10171               // and alloc new one
10172               f_regmap[hr]=regs[i].regmap[hr];
10173             }
10174           }
10175           if(branch_regs[i].regmap[hr]>64) {
10176             if(!((branch_regs[i].dirty>>hr)&1))
10177               f_regmap[hr]=branch_regs[i].regmap[hr];
10178             else f_regmap[hr]=-1;
10179           }
10180           else if(branch_regs[i].regmap[hr]>=0) {
10181             if(f_regmap[hr]!=branch_regs[i].regmap[hr]) {
10182               // dealloc old register
10183               int n;
10184               for(n=0;n<HOST_REGS;n++)
10185               {
10186                 if(f_regmap[n]==branch_regs[i].regmap[hr]) {f_regmap[n]=-1;}
10187               }
10188               // and alloc new one
10189               f_regmap[hr]=branch_regs[i].regmap[hr];
10190             }
10191           }
10192           if(ooo[i]) {
10193             if(count_free_regs(regs[i].regmap)<=minimum_free_regs[i+1])
10194               f_regmap[hr]=branch_regs[i].regmap[hr];
10195           }else{
10196             if(count_free_regs(branch_regs[i].regmap)<=minimum_free_regs[i+1])
10197               f_regmap[hr]=branch_regs[i].regmap[hr];
10198           }
10199           // Avoid dirty->clean transition
10200           #ifdef DESTRUCTIVE_WRITEBACK
10201           if(t>0) if(get_reg(regmap_pre[t],f_regmap[hr])>=0) if((regs[t].wasdirty>>get_reg(regmap_pre[t],f_regmap[hr]))&1) f_regmap[hr]=-1;
10202           #endif
10203           // This check is only strictly required in the DESTRUCTIVE_WRITEBACK
10204           // case above, however it's always a good idea.  We can't hoist the
10205           // load if the register was already allocated, so there's no point
10206           // wasting time analyzing most of these cases.  It only "succeeds"
10207           // when the mapping was different and the load can be replaced with
10208           // a mov, which is of negligible benefit.  So such cases are
10209           // skipped below.
10210           if(f_regmap[hr]>0) {
10211             if(regs[t].regmap[hr]==f_regmap[hr]||(regs[t].regmap_entry[hr]<0&&get_reg(regmap_pre[t],f_regmap[hr])<0)) {
10212               int r=f_regmap[hr];
10213               for(j=t;j<=i;j++)
10214               {
10215                 //printf("Test %x -> %x, %x %d/%d\n",start+i*4,ba[i],start+j*4,hr,r);
10216                 if(r<34&&((unneeded_reg[j]>>r)&1)) break;
10217                 if(r>63&&((unneeded_reg_upper[j]>>(r&63))&1)) break;
10218                 if(r>63) {
10219                   // NB This can exclude the case where the upper-half
10220                   // register is lower numbered than the lower-half
10221                   // register.  Not sure if it's worth fixing...
10222                   if(get_reg(regs[j].regmap,r&63)<0) break;
10223                   if(get_reg(regs[j].regmap_entry,r&63)<0) break;
10224                   if(regs[j].is32&(1LL<<(r&63))) break;
10225                 }
10226                 if(regs[j].regmap[hr]==f_regmap[hr]&&(f_regmap[hr]&63)<TEMPREG) {
10227                   //printf("Hit %x -> %x, %x %d/%d\n",start+i*4,ba[i],start+j*4,hr,r);
10228                   int k;
10229                   if(regs[i].regmap[hr]==-1&&branch_regs[i].regmap[hr]==-1) {
10230                     if(get_reg(regs[i+2].regmap,f_regmap[hr])>=0) break;
10231                     if(r>63) {
10232                       if(get_reg(regs[i].regmap,r&63)<0) break;
10233                       if(get_reg(branch_regs[i].regmap,r&63)<0) break;
10234                     }
10235                     k=i;
10236                     while(k>1&&regs[k-1].regmap[hr]==-1) {
10237                       if(count_free_regs(regs[k-1].regmap)<=minimum_free_regs[k-1]) {
10238                         //printf("no free regs for store %x\n",start+(k-1)*4);
10239                         break;
10240                       }
10241                       if(get_reg(regs[k-1].regmap,f_regmap[hr])>=0) {
10242                         //printf("no-match due to different register\n");
10243                         break;
10244                       }
10245                       if(itype[k-2]==UJUMP||itype[k-2]==RJUMP||itype[k-2]==CJUMP||itype[k-2]==SJUMP||itype[k-2]==FJUMP) {
10246                         //printf("no-match due to branch\n");
10247                         break;
10248                       }
10249                       // call/ret fast path assumes no registers allocated
10250                       if(k>2&&(itype[k-3]==UJUMP||itype[k-3]==RJUMP)&&rt1[k-3]==31) {
10251                         break;
10252                       }
10253                       if(r>63) {
10254                         // NB This can exclude the case where the upper-half
10255                         // register is lower numbered than the lower-half
10256                         // register.  Not sure if it's worth fixing...
10257                         if(get_reg(regs[k-1].regmap,r&63)<0) break;
10258                         if(regs[k-1].is32&(1LL<<(r&63))) break;
10259                       }
10260                       k--;
10261                     }
10262                     if(i<slen-1) {
10263                       if((regs[k].is32&(1LL<<f_regmap[hr]))!=
10264                         (regs[i+2].was32&(1LL<<f_regmap[hr]))) {
10265                         //printf("bad match after branch\n");
10266                         break;
10267                       }
10268                     }
10269                     if(regs[k-1].regmap[hr]==f_regmap[hr]&&regmap_pre[k][hr]==f_regmap[hr]) {
10270                       //printf("Extend r%d, %x ->\n",hr,start+k*4);
10271                       while(k<i) {
10272                         regs[k].regmap_entry[hr]=f_regmap[hr];
10273                         regs[k].regmap[hr]=f_regmap[hr];
10274                         regmap_pre[k+1][hr]=f_regmap[hr];
10275                         regs[k].wasdirty&=~(1<<hr);
10276                         regs[k].dirty&=~(1<<hr);
10277                         regs[k].wasdirty|=(1<<hr)&regs[k-1].dirty;
10278                         regs[k].dirty|=(1<<hr)&regs[k].wasdirty;
10279                         regs[k].wasconst&=~(1<<hr);
10280                         regs[k].isconst&=~(1<<hr);
10281                         k++;
10282                       }
10283                     }
10284                     else {
10285                       //printf("Fail Extend r%d, %x ->\n",hr,start+k*4);
10286                       break;
10287                     }
10288                     assert(regs[i-1].regmap[hr]==f_regmap[hr]);
10289                     if(regs[i-1].regmap[hr]==f_regmap[hr]&&regmap_pre[i][hr]==f_regmap[hr]) {
10290                       //printf("OK fill %x (r%d)\n",start+i*4,hr);
10291                       regs[i].regmap_entry[hr]=f_regmap[hr];
10292                       regs[i].regmap[hr]=f_regmap[hr];
10293                       regs[i].wasdirty&=~(1<<hr);
10294                       regs[i].dirty&=~(1<<hr);
10295                       regs[i].wasdirty|=(1<<hr)&regs[i-1].dirty;
10296                       regs[i].dirty|=(1<<hr)&regs[i-1].dirty;
10297                       regs[i].wasconst&=~(1<<hr);
10298                       regs[i].isconst&=~(1<<hr);
10299                       branch_regs[i].regmap_entry[hr]=f_regmap[hr];
10300                       branch_regs[i].wasdirty&=~(1<<hr);
10301                       branch_regs[i].wasdirty|=(1<<hr)&regs[i].dirty;
10302                       branch_regs[i].regmap[hr]=f_regmap[hr];
10303                       branch_regs[i].dirty&=~(1<<hr);
10304                       branch_regs[i].dirty|=(1<<hr)&regs[i].dirty;
10305                       branch_regs[i].wasconst&=~(1<<hr);
10306                       branch_regs[i].isconst&=~(1<<hr);
10307                       if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000) {
10308                         regmap_pre[i+2][hr]=f_regmap[hr];
10309                         regs[i+2].wasdirty&=~(1<<hr);
10310                         regs[i+2].wasdirty|=(1<<hr)&regs[i].dirty;
10311                         assert((branch_regs[i].is32&(1LL<<f_regmap[hr]))==
10312                           (regs[i+2].was32&(1LL<<f_regmap[hr])));
10313                       }
10314                     }
10315                   }
10316                   for(k=t;k<j;k++) {
10317                     // Alloc register clean at beginning of loop,
10318                     // but may dirty it in pass 6
10319                     regs[k].regmap_entry[hr]=f_regmap[hr];
10320                     regs[k].regmap[hr]=f_regmap[hr];
10321                     regs[k].dirty&=~(1<<hr);
10322                     regs[k].wasconst&=~(1<<hr);
10323                     regs[k].isconst&=~(1<<hr);
10324                     if(itype[k]==UJUMP||itype[k]==RJUMP||itype[k]==CJUMP||itype[k]==SJUMP||itype[k]==FJUMP) {
10325                       branch_regs[k].regmap_entry[hr]=f_regmap[hr];
10326                       branch_regs[k].regmap[hr]=f_regmap[hr];
10327                       branch_regs[k].dirty&=~(1<<hr);
10328                       branch_regs[k].wasconst&=~(1<<hr);
10329                       branch_regs[k].isconst&=~(1<<hr);
10330                       if(itype[k]!=RJUMP&&itype[k]!=UJUMP&&(source[k]>>16)!=0x1000) {
10331                         regmap_pre[k+2][hr]=f_regmap[hr];
10332                         regs[k+2].wasdirty&=~(1<<hr);
10333                         assert((branch_regs[k].is32&(1LL<<f_regmap[hr]))==
10334                           (regs[k+2].was32&(1LL<<f_regmap[hr])));
10335                       }
10336                     }
10337                     else
10338                     {
10339                       regmap_pre[k+1][hr]=f_regmap[hr];
10340                       regs[k+1].wasdirty&=~(1<<hr);
10341                     }
10342                   }
10343                   if(regs[j].regmap[hr]==f_regmap[hr])
10344                     regs[j].regmap_entry[hr]=f_regmap[hr];
10345                   break;
10346                 }
10347                 if(j==i) break;
10348                 if(regs[j].regmap[hr]>=0)
10349                   break;
10350                 if(get_reg(regs[j].regmap,f_regmap[hr])>=0) {
10351                   //printf("no-match due to different register\n");
10352                   break;
10353                 }
10354                 if((regs[j+1].is32&(1LL<<f_regmap[hr]))!=(regs[j].is32&(1LL<<f_regmap[hr]))) {
10355                   //printf("32/64 mismatch %x %d\n",start+j*4,hr);
10356                   break;
10357                 }
10358                 if(itype[j]==UJUMP||itype[j]==RJUMP||(source[j]>>16)==0x1000)
10359                 {
10360                   // Stop on unconditional branch
10361                   break;
10362                 }
10363                 if(itype[j]==CJUMP||itype[j]==SJUMP||itype[j]==FJUMP)
10364                 {
10365                   if(ooo[j]) {
10366                     if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j+1])
10367                       break;
10368                   }else{
10369                     if(count_free_regs(branch_regs[j].regmap)<=minimum_free_regs[j+1])
10370                       break;
10371                   }
10372                   if(get_reg(branch_regs[j].regmap,f_regmap[hr])>=0) {
10373                     //printf("no-match due to different register (branch)\n");
10374                     break;
10375                   }
10376                 }
10377                 if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j]) {
10378                   //printf("No free regs for store %x\n",start+j*4);
10379                   break;
10380                 }
10381                 if(f_regmap[hr]>=64) {
10382                   if(regs[j].is32&(1LL<<(f_regmap[hr]&63))) {
10383                     break;
10384                   }
10385                   else
10386                   {
10387                     if(get_reg(regs[j].regmap,f_regmap[hr]&63)<0) {
10388                       break;
10389                     }
10390                   }
10391                 }
10392               }
10393             }
10394           }
10395         }
10396       }
10397     }else{
10398       // Non branch or undetermined branch target
10399       for(hr=0;hr<HOST_REGS;hr++)
10400       {
10401         if(hr!=EXCLUDE_REG) {
10402           if(regs[i].regmap[hr]>64) {
10403             if(!((regs[i].dirty>>hr)&1))
10404               f_regmap[hr]=regs[i].regmap[hr];
10405           }
10406           else if(regs[i].regmap[hr]>=0) {
10407             if(f_regmap[hr]!=regs[i].regmap[hr]) {
10408               // dealloc old register
10409               int n;
10410               for(n=0;n<HOST_REGS;n++)
10411               {
10412                 if(f_regmap[n]==regs[i].regmap[hr]) {f_regmap[n]=-1;}
10413               }
10414               // and alloc new one
10415               f_regmap[hr]=regs[i].regmap[hr];
10416             }
10417           }
10418         }
10419       }
10420       // Try to restore cycle count at branch targets
10421       if(bt[i]) {
10422         for(j=i;j<slen-1;j++) {
10423           if(regs[j].regmap[HOST_CCREG]!=-1) break;
10424           if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j]) {
10425             //printf("no free regs for store %x\n",start+j*4);
10426             break;
10427           }
10428         }
10429         if(regs[j].regmap[HOST_CCREG]==CCREG) {
10430           int k=i;
10431           //printf("Extend CC, %x -> %x\n",start+k*4,start+j*4);
10432           while(k<j) {
10433             regs[k].regmap_entry[HOST_CCREG]=CCREG;
10434             regs[k].regmap[HOST_CCREG]=CCREG;
10435             regmap_pre[k+1][HOST_CCREG]=CCREG;
10436             regs[k+1].wasdirty|=1<<HOST_CCREG;
10437             regs[k].dirty|=1<<HOST_CCREG;
10438             regs[k].wasconst&=~(1<<HOST_CCREG);
10439             regs[k].isconst&=~(1<<HOST_CCREG);
10440             k++;
10441           }
10442           regs[j].regmap_entry[HOST_CCREG]=CCREG;
10443         }
10444         // Work backwards from the branch target
10445         if(j>i&&f_regmap[HOST_CCREG]==CCREG)
10446         {
10447           //printf("Extend backwards\n");
10448           int k;
10449           k=i;
10450           while(regs[k-1].regmap[HOST_CCREG]==-1) {
10451             if(count_free_regs(regs[k-1].regmap)<=minimum_free_regs[k-1]) {
10452               //printf("no free regs for store %x\n",start+(k-1)*4);
10453               break;
10454             }
10455             k--;
10456           }
10457           if(regs[k-1].regmap[HOST_CCREG]==CCREG) {
10458             //printf("Extend CC, %x ->\n",start+k*4);
10459             while(k<=i) {
10460               regs[k].regmap_entry[HOST_CCREG]=CCREG;
10461               regs[k].regmap[HOST_CCREG]=CCREG;
10462               regmap_pre[k+1][HOST_CCREG]=CCREG;
10463               regs[k+1].wasdirty|=1<<HOST_CCREG;
10464               regs[k].dirty|=1<<HOST_CCREG;
10465               regs[k].wasconst&=~(1<<HOST_CCREG);
10466               regs[k].isconst&=~(1<<HOST_CCREG);
10467               k++;
10468             }
10469           }
10470           else {
10471             //printf("Fail Extend CC, %x ->\n",start+k*4);
10472           }
10473         }
10474       }
10475       if(itype[i]!=STORE&&itype[i]!=STORELR&&itype[i]!=C1LS&&itype[i]!=SHIFT&&
10476          itype[i]!=NOP&&itype[i]!=MOV&&itype[i]!=ALU&&itype[i]!=SHIFTIMM&&
10477          itype[i]!=IMM16&&itype[i]!=LOAD&&itype[i]!=COP1&&itype[i]!=FLOAT&&
10478          itype[i]!=FCONV&&itype[i]!=FCOMP)
10479       {
10480         memcpy(f_regmap,regs[i].regmap,sizeof(f_regmap));
10481       }
10482     }
10483   }
10484
10485   // Cache memory offset or tlb map pointer if a register is available
10486   #ifndef HOST_IMM_ADDR32
10487   #ifndef RAM_OFFSET
10488   if(using_tlb)
10489   #endif
10490   {
10491     int earliest_available[HOST_REGS];
10492     int loop_start[HOST_REGS];
10493     int score[HOST_REGS];
10494     int end[HOST_REGS];
10495     int reg=using_tlb?MMREG:ROREG;
10496
10497     // Init
10498     for(hr=0;hr<HOST_REGS;hr++) {
10499       score[hr]=0;earliest_available[hr]=0;
10500       loop_start[hr]=MAXBLOCK;
10501     }
10502     for(i=0;i<slen-1;i++)
10503     {
10504       // Can't do anything if no registers are available
10505       if(count_free_regs(regs[i].regmap)<=minimum_free_regs[i]) {
10506         for(hr=0;hr<HOST_REGS;hr++) {
10507           score[hr]=0;earliest_available[hr]=i+1;
10508           loop_start[hr]=MAXBLOCK;
10509         }
10510       }
10511       if(itype[i]==UJUMP||itype[i]==RJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP) {
10512         if(!ooo[i]) {
10513           if(count_free_regs(branch_regs[i].regmap)<=minimum_free_regs[i+1]) {
10514             for(hr=0;hr<HOST_REGS;hr++) {
10515               score[hr]=0;earliest_available[hr]=i+1;
10516               loop_start[hr]=MAXBLOCK;
10517             }
10518           }
10519         }else{
10520           if(count_free_regs(regs[i].regmap)<=minimum_free_regs[i+1]) {
10521             for(hr=0;hr<HOST_REGS;hr++) {
10522               score[hr]=0;earliest_available[hr]=i+1;
10523               loop_start[hr]=MAXBLOCK;
10524             }
10525           }
10526         }
10527       }
10528       // Mark unavailable registers
10529       for(hr=0;hr<HOST_REGS;hr++) {
10530         if(regs[i].regmap[hr]>=0) {
10531           score[hr]=0;earliest_available[hr]=i+1;
10532           loop_start[hr]=MAXBLOCK;
10533         }
10534         if(itype[i]==UJUMP||itype[i]==RJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP) {
10535           if(branch_regs[i].regmap[hr]>=0) {
10536             score[hr]=0;earliest_available[hr]=i+2;
10537             loop_start[hr]=MAXBLOCK;
10538           }
10539         }
10540       }
10541       // No register allocations after unconditional jumps
10542       if(itype[i]==UJUMP||itype[i]==RJUMP||(source[i]>>16)==0x1000)
10543       {
10544         for(hr=0;hr<HOST_REGS;hr++) {
10545           score[hr]=0;earliest_available[hr]=i+2;
10546           loop_start[hr]=MAXBLOCK;
10547         }
10548         i++; // Skip delay slot too
10549         //printf("skip delay slot: %x\n",start+i*4);
10550       }
10551       else
10552       // Possible match
10553       if(itype[i]==LOAD||itype[i]==LOADLR||
10554          itype[i]==STORE||itype[i]==STORELR||itype[i]==C1LS) {
10555         for(hr=0;hr<HOST_REGS;hr++) {
10556           if(hr!=EXCLUDE_REG) {
10557             end[hr]=i-1;
10558             for(j=i;j<slen-1;j++) {
10559               if(regs[j].regmap[hr]>=0) break;
10560               if(itype[j]==UJUMP||itype[j]==RJUMP||itype[j]==CJUMP||itype[j]==SJUMP||itype[j]==FJUMP) {
10561                 if(branch_regs[j].regmap[hr]>=0) break;
10562                 if(ooo[j]) {
10563                   if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j+1]) break;
10564                 }else{
10565                   if(count_free_regs(branch_regs[j].regmap)<=minimum_free_regs[j+1]) break;
10566                 }
10567               }
10568               else if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j]) break;
10569               if(itype[j]==UJUMP||itype[j]==RJUMP||itype[j]==CJUMP||itype[j]==SJUMP||itype[j]==FJUMP) {
10570                 int t=(ba[j]-start)>>2;
10571                 if(t<j&&t>=earliest_available[hr]) {
10572                   if(t==1||(t>1&&itype[t-2]!=UJUMP&&itype[t-2]!=RJUMP)||(t>1&&rt1[t-2]!=31)) { // call/ret assumes no registers allocated
10573                     // Score a point for hoisting loop invariant
10574                     if(t<loop_start[hr]) loop_start[hr]=t;
10575                     //printf("set loop_start: i=%x j=%x (%x)\n",start+i*4,start+j*4,start+t*4);
10576                     score[hr]++;
10577                     end[hr]=j;
10578                   }
10579                 }
10580                 else if(t<j) {
10581                   if(regs[t].regmap[hr]==reg) {
10582                     // Score a point if the branch target matches this register
10583                     score[hr]++;
10584                     end[hr]=j;
10585                   }
10586                 }
10587                 if(itype[j+1]==LOAD||itype[j+1]==LOADLR||
10588                    itype[j+1]==STORE||itype[j+1]==STORELR||itype[j+1]==C1LS) {
10589                   score[hr]++;
10590                   end[hr]=j;
10591                 }
10592               }
10593               if(itype[j]==UJUMP||itype[j]==RJUMP||(source[j]>>16)==0x1000)
10594               {
10595                 // Stop on unconditional branch
10596                 break;
10597               }
10598               else
10599               if(itype[j]==LOAD||itype[j]==LOADLR||
10600                  itype[j]==STORE||itype[j]==STORELR||itype[j]==C1LS) {
10601                 score[hr]++;
10602                 end[hr]=j;
10603               }
10604             }
10605           }
10606         }
10607         // Find highest score and allocate that register
10608         int maxscore=0;
10609         for(hr=0;hr<HOST_REGS;hr++) {
10610           if(hr!=EXCLUDE_REG) {
10611             if(score[hr]>score[maxscore]) {
10612               maxscore=hr;
10613               //printf("highest score: %d %d (%x->%x)\n",score[hr],hr,start+i*4,start+end[hr]*4);
10614             }
10615           }
10616         }
10617         if(score[maxscore]>1)
10618         {
10619           if(i<loop_start[maxscore]) loop_start[maxscore]=i;
10620           for(j=loop_start[maxscore];j<slen&&j<=end[maxscore];j++) {
10621             //if(regs[j].regmap[maxscore]>=0) {printf("oops: %x %x was %d=%d\n",loop_start[maxscore]*4+start,j*4+start,maxscore,regs[j].regmap[maxscore]);}
10622             assert(regs[j].regmap[maxscore]<0);
10623             if(j>loop_start[maxscore]) regs[j].regmap_entry[maxscore]=reg;
10624             regs[j].regmap[maxscore]=reg;
10625             regs[j].dirty&=~(1<<maxscore);
10626             regs[j].wasconst&=~(1<<maxscore);
10627             regs[j].isconst&=~(1<<maxscore);
10628             if(itype[j]==UJUMP||itype[j]==RJUMP||itype[j]==CJUMP||itype[j]==SJUMP||itype[j]==FJUMP) {
10629               branch_regs[j].regmap[maxscore]=reg;
10630               branch_regs[j].wasdirty&=~(1<<maxscore);
10631               branch_regs[j].dirty&=~(1<<maxscore);
10632               branch_regs[j].wasconst&=~(1<<maxscore);
10633               branch_regs[j].isconst&=~(1<<maxscore);
10634               if(itype[j]!=RJUMP&&itype[j]!=UJUMP&&(source[j]>>16)!=0x1000) {
10635                 regmap_pre[j+2][maxscore]=reg;
10636                 regs[j+2].wasdirty&=~(1<<maxscore);
10637               }
10638               // loop optimization (loop_preload)
10639               int t=(ba[j]-start)>>2;
10640               if(t==loop_start[maxscore]) {
10641                 if(t==1||(t>1&&itype[t-2]!=UJUMP&&itype[t-2]!=RJUMP)||(t>1&&rt1[t-2]!=31)) // call/ret assumes no registers allocated
10642                   regs[t].regmap_entry[maxscore]=reg;
10643               }
10644             }
10645             else
10646             {
10647               if(j<1||(itype[j-1]!=RJUMP&&itype[j-1]!=UJUMP&&itype[j-1]!=CJUMP&&itype[j-1]!=SJUMP&&itype[j-1]!=FJUMP)) {
10648                 regmap_pre[j+1][maxscore]=reg;
10649                 regs[j+1].wasdirty&=~(1<<maxscore);
10650               }
10651             }
10652           }
10653           i=j-1;
10654           if(itype[j-1]==RJUMP||itype[j-1]==UJUMP||itype[j-1]==CJUMP||itype[j-1]==SJUMP||itype[j-1]==FJUMP) i++; // skip delay slot
10655           for(hr=0;hr<HOST_REGS;hr++) {
10656             score[hr]=0;earliest_available[hr]=i+i;
10657             loop_start[hr]=MAXBLOCK;
10658           }
10659         }
10660       }
10661     }
10662   }
10663   #endif
10664
10665   // This allocates registers (if possible) one instruction prior
10666   // to use, which can avoid a load-use penalty on certain CPUs.
10667   for(i=0;i<slen-1;i++)
10668   {
10669     if(!i||(itype[i-1]!=UJUMP&&itype[i-1]!=CJUMP&&itype[i-1]!=SJUMP&&itype[i-1]!=RJUMP&&itype[i-1]!=FJUMP))
10670     {
10671       if(!bt[i+1])
10672       {
10673         if(itype[i]==ALU||itype[i]==MOV||itype[i]==LOAD||itype[i]==SHIFTIMM||itype[i]==IMM16
10674            ||((itype[i]==COP1||itype[i]==COP2)&&opcode2[i]<3))
10675         {
10676           if(rs1[i+1]) {
10677             if((hr=get_reg(regs[i+1].regmap,rs1[i+1]))>=0)
10678             {
10679               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10680               {
10681                 regs[i].regmap[hr]=regs[i+1].regmap[hr];
10682                 regmap_pre[i+1][hr]=regs[i+1].regmap[hr];
10683                 regs[i+1].regmap_entry[hr]=regs[i+1].regmap[hr];
10684                 regs[i].isconst&=~(1<<hr);
10685                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10686                 constmap[i][hr]=constmap[i+1][hr];
10687                 regs[i+1].wasdirty&=~(1<<hr);
10688                 regs[i].dirty&=~(1<<hr);
10689               }
10690             }
10691           }
10692           if(rs2[i+1]) {
10693             if((hr=get_reg(regs[i+1].regmap,rs2[i+1]))>=0)
10694             {
10695               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10696               {
10697                 regs[i].regmap[hr]=regs[i+1].regmap[hr];
10698                 regmap_pre[i+1][hr]=regs[i+1].regmap[hr];
10699                 regs[i+1].regmap_entry[hr]=regs[i+1].regmap[hr];
10700                 regs[i].isconst&=~(1<<hr);
10701                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10702                 constmap[i][hr]=constmap[i+1][hr];
10703                 regs[i+1].wasdirty&=~(1<<hr);
10704                 regs[i].dirty&=~(1<<hr);
10705               }
10706             }
10707           }
10708           // Preload target address for load instruction (non-constant)
10709           if(itype[i+1]==LOAD&&rs1[i+1]&&get_reg(regs[i+1].regmap,rs1[i+1])<0) {
10710             if((hr=get_reg(regs[i+1].regmap,rt1[i+1]))>=0)
10711             {
10712               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10713               {
10714                 regs[i].regmap[hr]=rs1[i+1];
10715                 regmap_pre[i+1][hr]=rs1[i+1];
10716                 regs[i+1].regmap_entry[hr]=rs1[i+1];
10717                 regs[i].isconst&=~(1<<hr);
10718                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10719                 constmap[i][hr]=constmap[i+1][hr];
10720                 regs[i+1].wasdirty&=~(1<<hr);
10721                 regs[i].dirty&=~(1<<hr);
10722               }
10723             }
10724           }
10725           // Load source into target register
10726           if(lt1[i+1]&&get_reg(regs[i+1].regmap,rs1[i+1])<0) {
10727             if((hr=get_reg(regs[i+1].regmap,rt1[i+1]))>=0)
10728             {
10729               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10730               {
10731                 regs[i].regmap[hr]=rs1[i+1];
10732                 regmap_pre[i+1][hr]=rs1[i+1];
10733                 regs[i+1].regmap_entry[hr]=rs1[i+1];
10734                 regs[i].isconst&=~(1<<hr);
10735                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10736                 constmap[i][hr]=constmap[i+1][hr];
10737                 regs[i+1].wasdirty&=~(1<<hr);
10738                 regs[i].dirty&=~(1<<hr);
10739               }
10740             }
10741           }
10742           // Preload map address
10743           #ifndef HOST_IMM_ADDR32
10744           if(itype[i+1]==LOAD||itype[i+1]==LOADLR||itype[i+1]==STORE||itype[i+1]==STORELR||itype[i+1]==C1LS||itype[i+1]==C2LS) {
10745             hr=get_reg(regs[i+1].regmap,TLREG);
10746             if(hr>=0) {
10747               int sr=get_reg(regs[i+1].regmap,rs1[i+1]);
10748               if(sr>=0&&((regs[i+1].wasconst>>sr)&1)) {
10749                 int nr;
10750                 if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10751                 {
10752                   regs[i].regmap[hr]=MGEN1+((i+1)&1);
10753                   regmap_pre[i+1][hr]=MGEN1+((i+1)&1);
10754                   regs[i+1].regmap_entry[hr]=MGEN1+((i+1)&1);
10755                   regs[i].isconst&=~(1<<hr);
10756                   regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10757                   constmap[i][hr]=constmap[i+1][hr];
10758                   regs[i+1].wasdirty&=~(1<<hr);
10759                   regs[i].dirty&=~(1<<hr);
10760                 }
10761                 else if((nr=get_reg2(regs[i].regmap,regs[i+1].regmap,-1))>=0)
10762                 {
10763                   // move it to another register
10764                   regs[i+1].regmap[hr]=-1;
10765                   regmap_pre[i+2][hr]=-1;
10766                   regs[i+1].regmap[nr]=TLREG;
10767                   regmap_pre[i+2][nr]=TLREG;
10768                   regs[i].regmap[nr]=MGEN1+((i+1)&1);
10769                   regmap_pre[i+1][nr]=MGEN1+((i+1)&1);
10770                   regs[i+1].regmap_entry[nr]=MGEN1+((i+1)&1);
10771                   regs[i].isconst&=~(1<<nr);
10772                   regs[i+1].isconst&=~(1<<nr);
10773                   regs[i].dirty&=~(1<<nr);
10774                   regs[i+1].wasdirty&=~(1<<nr);
10775                   regs[i+1].dirty&=~(1<<nr);
10776                   regs[i+2].wasdirty&=~(1<<nr);
10777                 }
10778               }
10779             }
10780           }
10781           #endif
10782           // Address for store instruction (non-constant)
10783           if(itype[i+1]==STORE||itype[i+1]==STORELR
10784              ||(opcode[i+1]&0x3b)==0x39||(opcode[i+1]&0x3b)==0x3a) { // SB/SH/SW/SD/SWC1/SDC1/SWC2/SDC2
10785             if(get_reg(regs[i+1].regmap,rs1[i+1])<0) {
10786               hr=get_reg2(regs[i].regmap,regs[i+1].regmap,-1);
10787               if(hr<0) hr=get_reg(regs[i+1].regmap,-1);
10788               else {regs[i+1].regmap[hr]=AGEN1+((i+1)&1);regs[i+1].isconst&=~(1<<hr);}
10789               assert(hr>=0);
10790               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10791               {
10792                 regs[i].regmap[hr]=rs1[i+1];
10793                 regmap_pre[i+1][hr]=rs1[i+1];
10794                 regs[i+1].regmap_entry[hr]=rs1[i+1];
10795                 regs[i].isconst&=~(1<<hr);
10796                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10797                 constmap[i][hr]=constmap[i+1][hr];
10798                 regs[i+1].wasdirty&=~(1<<hr);
10799                 regs[i].dirty&=~(1<<hr);
10800               }
10801             }
10802           }
10803           if(itype[i+1]==LOADLR||(opcode[i+1]&0x3b)==0x31||(opcode[i+1]&0x3b)==0x32) { // LWC1/LDC1, LWC2/LDC2
10804             if(get_reg(regs[i+1].regmap,rs1[i+1])<0) {
10805               int nr;
10806               hr=get_reg(regs[i+1].regmap,FTEMP);
10807               assert(hr>=0);
10808               if(regs[i].regmap[hr]<0&&regs[i+1].regmap_entry[hr]<0)
10809               {
10810                 regs[i].regmap[hr]=rs1[i+1];
10811                 regmap_pre[i+1][hr]=rs1[i+1];
10812                 regs[i+1].regmap_entry[hr]=rs1[i+1];
10813                 regs[i].isconst&=~(1<<hr);
10814                 regs[i].isconst|=regs[i+1].isconst&(1<<hr);
10815                 constmap[i][hr]=constmap[i+1][hr];
10816                 regs[i+1].wasdirty&=~(1<<hr);
10817                 regs[i].dirty&=~(1<<hr);
10818               }
10819               else if((nr=get_reg2(regs[i].regmap,regs[i+1].regmap,-1))>=0)
10820               {
10821                 // move it to another register
10822                 regs[i+1].regmap[hr]=-1;
10823                 regmap_pre[i+2][hr]=-1;
10824                 regs[i+1].regmap[nr]=FTEMP;
10825                 regmap_pre[i+2][nr]=FTEMP;
10826                 regs[i].regmap[nr]=rs1[i+1];
10827                 regmap_pre[i+1][nr]=rs1[i+1];
10828                 regs[i+1].regmap_entry[nr]=rs1[i+1];
10829                 regs[i].isconst&=~(1<<nr);
10830                 regs[i+1].isconst&=~(1<<nr);
10831                 regs[i].dirty&=~(1<<nr);
10832                 regs[i+1].wasdirty&=~(1<<nr);
10833                 regs[i+1].dirty&=~(1<<nr);
10834                 regs[i+2].wasdirty&=~(1<<nr);
10835               }
10836             }
10837           }
10838           if(itype[i+1]==LOAD||itype[i+1]==LOADLR||itype[i+1]==STORE||itype[i+1]==STORELR/*||itype[i+1]==C1LS||||itype[i+1]==C2LS*/) {
10839             if(itype[i+1]==LOAD)
10840               hr=get_reg(regs[i+1].regmap,rt1[i+1]);
10841             if(itype[i+1]==LOADLR||(opcode[i+1]&0x3b)==0x31||(opcode[i+1]&0x3b)==0x32) // LWC1/LDC1, LWC2/LDC2
10842               hr=get_reg(regs[i+1].regmap,FTEMP);
10843             if(itype[i+1]==STORE||itype[i+1]==STORELR||(opcode[i+1]&0x3b)==0x39||(opcode[i+1]&0x3b)==0x3a) { // SWC1/SDC1/SWC2/SDC2
10844               hr=get_reg(regs[i+1].regmap,AGEN1+((i+1)&1));
10845               if(hr<0) hr=get_reg(regs[i+1].regmap,-1);
10846             }
10847             if(hr>=0&&regs[i].regmap[hr]<0) {
10848               int rs=get_reg(regs[i+1].regmap,rs1[i+1]);
10849               if(rs>=0&&((regs[i+1].wasconst>>rs)&1)) {
10850                 regs[i].regmap[hr]=AGEN1+((i+1)&1);
10851                 regmap_pre[i+1][hr]=AGEN1+((i+1)&1);
10852                 regs[i+1].regmap_entry[hr]=AGEN1+((i+1)&1);
10853                 regs[i].isconst&=~(1<<hr);
10854                 regs[i+1].wasdirty&=~(1<<hr);
10855                 regs[i].dirty&=~(1<<hr);
10856               }
10857             }
10858           }
10859         }
10860       }
10861     }
10862   }
10863
10864   /* Pass 6 - Optimize clean/dirty state */
10865   clean_registers(0,slen-1,1);
10866
10867   /* Pass 7 - Identify 32-bit registers */
10868 #ifndef FORCE32
10869   provisional_r32();
10870
10871   u_int r32=0;
10872
10873   for (i=slen-1;i>=0;i--)
10874   {
10875     int hr;
10876     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
10877     {
10878       if(ba[i]<start || ba[i]>=(start+slen*4))
10879       {
10880         // Branch out of this block, don't need anything
10881         r32=0;
10882       }
10883       else
10884       {
10885         // Internal branch
10886         // Need whatever matches the target
10887         // (and doesn't get overwritten by the delay slot instruction)
10888         r32=0;
10889         int t=(ba[i]-start)>>2;
10890         if(ba[i]>start+i*4) {
10891           // Forward branch
10892           if(!(requires_32bit[t]&~regs[i].was32))
10893             r32|=requires_32bit[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
10894         }else{
10895           // Backward branch
10896           //if(!(regs[t].was32&~unneeded_reg_upper[t]&~regs[i].was32))
10897           //  r32|=regs[t].was32&~unneeded_reg_upper[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
10898           if(!(pr32[t]&~regs[i].was32))
10899             r32|=pr32[t]&(~(1LL<<rt1[i+1]))&(~(1LL<<rt2[i+1]));
10900         }
10901       }
10902       // Conditional branch may need registers for following instructions
10903       if(itype[i]!=RJUMP&&itype[i]!=UJUMP&&(source[i]>>16)!=0x1000)
10904       {
10905         if(i<slen-2) {
10906           r32|=requires_32bit[i+2];
10907           r32&=regs[i].was32;
10908           // Mark this address as a branch target since it may be called
10909           // upon return from interrupt
10910           bt[i+2]=1;
10911         }
10912       }
10913       // Merge in delay slot
10914       if(!likely[i]) {
10915         // These are overwritten unless the branch is "likely"
10916         // and the delay slot is nullified if not taken
10917         r32&=~(1LL<<rt1[i+1]);
10918         r32&=~(1LL<<rt2[i+1]);
10919       }
10920       // Assume these are needed (delay slot)
10921       if(us1[i+1]>0)
10922       {
10923         if((regs[i].was32>>us1[i+1])&1) r32|=1LL<<us1[i+1];
10924       }
10925       if(us2[i+1]>0)
10926       {
10927         if((regs[i].was32>>us2[i+1])&1) r32|=1LL<<us2[i+1];
10928       }
10929       if(dep1[i+1]&&!((unneeded_reg_upper[i]>>dep1[i+1])&1))
10930       {
10931         if((regs[i].was32>>dep1[i+1])&1) r32|=1LL<<dep1[i+1];
10932       }
10933       if(dep2[i+1]&&!((unneeded_reg_upper[i]>>dep2[i+1])&1))
10934       {
10935         if((regs[i].was32>>dep2[i+1])&1) r32|=1LL<<dep2[i+1];
10936       }
10937     }
10938     else if(itype[i]==SYSCALL||itype[i]==HLECALL||itype[i]==INTCALL)
10939     {
10940       // SYSCALL instruction (software interrupt)
10941       r32=0;
10942     }
10943     else if(itype[i]==COP0 && (source[i]&0x3f)==0x18)
10944     {
10945       // ERET instruction (return from interrupt)
10946       r32=0;
10947     }
10948     // Check 32 bits
10949     r32&=~(1LL<<rt1[i]);
10950     r32&=~(1LL<<rt2[i]);
10951     if(us1[i]>0)
10952     {
10953       if((regs[i].was32>>us1[i])&1) r32|=1LL<<us1[i];
10954     }
10955     if(us2[i]>0)
10956     {
10957       if((regs[i].was32>>us2[i])&1) r32|=1LL<<us2[i];
10958     }
10959     if(dep1[i]&&!((unneeded_reg_upper[i]>>dep1[i])&1))
10960     {
10961       if((regs[i].was32>>dep1[i])&1) r32|=1LL<<dep1[i];
10962     }
10963     if(dep2[i]&&!((unneeded_reg_upper[i]>>dep2[i])&1))
10964     {
10965       if((regs[i].was32>>dep2[i])&1) r32|=1LL<<dep2[i];
10966     }
10967     requires_32bit[i]=r32;
10968
10969     // Dirty registers which are 32-bit, require 32-bit input
10970     // as they will be written as 32-bit values
10971     for(hr=0;hr<HOST_REGS;hr++)
10972     {
10973       if(regs[i].regmap_entry[hr]>0&&regs[i].regmap_entry[hr]<64) {
10974         if((regs[i].was32>>regs[i].regmap_entry[hr])&(regs[i].wasdirty>>hr)&1) {
10975           if(!((unneeded_reg_upper[i]>>regs[i].regmap_entry[hr])&1))
10976           requires_32bit[i]|=1LL<<regs[i].regmap_entry[hr];
10977         }
10978       }
10979     }
10980     //requires_32bit[i]=is32[i]&~unneeded_reg_upper[i]; // DEBUG
10981   }
10982 #else
10983   for (i=slen-1;i>=0;i--)
10984   {
10985     if(itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
10986     {
10987       // Conditional branch
10988       if((source[i]>>16)!=0x1000&&i<slen-2) {
10989         // Mark this address as a branch target since it may be called
10990         // upon return from interrupt
10991         bt[i+2]=1;
10992       }
10993     }
10994   }
10995 #endif
10996
10997   if(itype[slen-1]==SPAN) {
10998     bt[slen-1]=1; // Mark as a branch target so instruction can restart after exception
10999   }
11000
11001 #ifdef DISASM
11002   /* Debug/disassembly */
11003   for(i=0;i<slen;i++)
11004   {
11005     printf("U:");
11006     int r;
11007     for(r=1;r<=CCREG;r++) {
11008       if((unneeded_reg[i]>>r)&1) {
11009         if(r==HIREG) printf(" HI");
11010         else if(r==LOREG) printf(" LO");
11011         else printf(" r%d",r);
11012       }
11013     }
11014 #ifndef FORCE32
11015     printf(" UU:");
11016     for(r=1;r<=CCREG;r++) {
11017       if(((unneeded_reg_upper[i]&~unneeded_reg[i])>>r)&1) {
11018         if(r==HIREG) printf(" HI");
11019         else if(r==LOREG) printf(" LO");
11020         else printf(" r%d",r);
11021       }
11022     }
11023     printf(" 32:");
11024     for(r=0;r<=CCREG;r++) {
11025       //if(((is32[i]>>r)&(~unneeded_reg[i]>>r))&1) {
11026       if((regs[i].was32>>r)&1) {
11027         if(r==CCREG) printf(" CC");
11028         else if(r==HIREG) printf(" HI");
11029         else if(r==LOREG) printf(" LO");
11030         else printf(" r%d",r);
11031       }
11032     }
11033 #endif
11034     printf("\n");
11035     #if defined(__i386__) || defined(__x86_64__)
11036     printf("pre: eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",regmap_pre[i][0],regmap_pre[i][1],regmap_pre[i][2],regmap_pre[i][3],regmap_pre[i][5],regmap_pre[i][6],regmap_pre[i][7]);
11037     #endif
11038     #ifdef __arm__
11039     printf("pre: r0=%d r1=%d r2=%d r3=%d r4=%d r5=%d r6=%d r7=%d r8=%d r9=%d r10=%d r12=%d\n",regmap_pre[i][0],regmap_pre[i][1],regmap_pre[i][2],regmap_pre[i][3],regmap_pre[i][4],regmap_pre[i][5],regmap_pre[i][6],regmap_pre[i][7],regmap_pre[i][8],regmap_pre[i][9],regmap_pre[i][10],regmap_pre[i][12]);
11040     #endif
11041     printf("needs: ");
11042     if(needed_reg[i]&1) printf("eax ");
11043     if((needed_reg[i]>>1)&1) printf("ecx ");
11044     if((needed_reg[i]>>2)&1) printf("edx ");
11045     if((needed_reg[i]>>3)&1) printf("ebx ");
11046     if((needed_reg[i]>>5)&1) printf("ebp ");
11047     if((needed_reg[i]>>6)&1) printf("esi ");
11048     if((needed_reg[i]>>7)&1) printf("edi ");
11049     printf("r:");
11050     for(r=0;r<=CCREG;r++) {
11051       //if(((requires_32bit[i]>>r)&(~unneeded_reg[i]>>r))&1) {
11052       if((requires_32bit[i]>>r)&1) {
11053         if(r==CCREG) printf(" CC");
11054         else if(r==HIREG) printf(" HI");
11055         else if(r==LOREG) printf(" LO");
11056         else printf(" r%d",r);
11057       }
11058     }
11059     printf("\n");
11060     /*printf("pr:");
11061     for(r=0;r<=CCREG;r++) {
11062       //if(((requires_32bit[i]>>r)&(~unneeded_reg[i]>>r))&1) {
11063       if((pr32[i]>>r)&1) {
11064         if(r==CCREG) printf(" CC");
11065         else if(r==HIREG) printf(" HI");
11066         else if(r==LOREG) printf(" LO");
11067         else printf(" r%d",r);
11068       }
11069     }
11070     if(pr32[i]!=requires_32bit[i]) printf(" OOPS");
11071     printf("\n");*/
11072     #if defined(__i386__) || defined(__x86_64__)
11073     printf("entry: eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",regs[i].regmap_entry[0],regs[i].regmap_entry[1],regs[i].regmap_entry[2],regs[i].regmap_entry[3],regs[i].regmap_entry[5],regs[i].regmap_entry[6],regs[i].regmap_entry[7]);
11074     printf("dirty: ");
11075     if(regs[i].wasdirty&1) printf("eax ");
11076     if((regs[i].wasdirty>>1)&1) printf("ecx ");
11077     if((regs[i].wasdirty>>2)&1) printf("edx ");
11078     if((regs[i].wasdirty>>3)&1) printf("ebx ");
11079     if((regs[i].wasdirty>>5)&1) printf("ebp ");
11080     if((regs[i].wasdirty>>6)&1) printf("esi ");
11081     if((regs[i].wasdirty>>7)&1) printf("edi ");
11082     #endif
11083     #ifdef __arm__
11084     printf("entry: r0=%d r1=%d r2=%d r3=%d r4=%d r5=%d r6=%d r7=%d r8=%d r9=%d r10=%d r12=%d\n",regs[i].regmap_entry[0],regs[i].regmap_entry[1],regs[i].regmap_entry[2],regs[i].regmap_entry[3],regs[i].regmap_entry[4],regs[i].regmap_entry[5],regs[i].regmap_entry[6],regs[i].regmap_entry[7],regs[i].regmap_entry[8],regs[i].regmap_entry[9],regs[i].regmap_entry[10],regs[i].regmap_entry[12]);
11085     printf("dirty: ");
11086     if(regs[i].wasdirty&1) printf("r0 ");
11087     if((regs[i].wasdirty>>1)&1) printf("r1 ");
11088     if((regs[i].wasdirty>>2)&1) printf("r2 ");
11089     if((regs[i].wasdirty>>3)&1) printf("r3 ");
11090     if((regs[i].wasdirty>>4)&1) printf("r4 ");
11091     if((regs[i].wasdirty>>5)&1) printf("r5 ");
11092     if((regs[i].wasdirty>>6)&1) printf("r6 ");
11093     if((regs[i].wasdirty>>7)&1) printf("r7 ");
11094     if((regs[i].wasdirty>>8)&1) printf("r8 ");
11095     if((regs[i].wasdirty>>9)&1) printf("r9 ");
11096     if((regs[i].wasdirty>>10)&1) printf("r10 ");
11097     if((regs[i].wasdirty>>12)&1) printf("r12 ");
11098     #endif
11099     printf("\n");
11100     disassemble_inst(i);
11101     //printf ("ccadj[%d] = %d\n",i,ccadj[i]);
11102     #if defined(__i386__) || defined(__x86_64__)
11103     printf("eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d dirty: ",regs[i].regmap[0],regs[i].regmap[1],regs[i].regmap[2],regs[i].regmap[3],regs[i].regmap[5],regs[i].regmap[6],regs[i].regmap[7]);
11104     if(regs[i].dirty&1) printf("eax ");
11105     if((regs[i].dirty>>1)&1) printf("ecx ");
11106     if((regs[i].dirty>>2)&1) printf("edx ");
11107     if((regs[i].dirty>>3)&1) printf("ebx ");
11108     if((regs[i].dirty>>5)&1) printf("ebp ");
11109     if((regs[i].dirty>>6)&1) printf("esi ");
11110     if((regs[i].dirty>>7)&1) printf("edi ");
11111     #endif
11112     #ifdef __arm__
11113     printf("r0=%d r1=%d r2=%d r3=%d r4=%d r5=%d r6=%d r7=%d r8=%d r9=%d r10=%d r12=%d dirty: ",regs[i].regmap[0],regs[i].regmap[1],regs[i].regmap[2],regs[i].regmap[3],regs[i].regmap[4],regs[i].regmap[5],regs[i].regmap[6],regs[i].regmap[7],regs[i].regmap[8],regs[i].regmap[9],regs[i].regmap[10],regs[i].regmap[12]);
11114     if(regs[i].dirty&1) printf("r0 ");
11115     if((regs[i].dirty>>1)&1) printf("r1 ");
11116     if((regs[i].dirty>>2)&1) printf("r2 ");
11117     if((regs[i].dirty>>3)&1) printf("r3 ");
11118     if((regs[i].dirty>>4)&1) printf("r4 ");
11119     if((regs[i].dirty>>5)&1) printf("r5 ");
11120     if((regs[i].dirty>>6)&1) printf("r6 ");
11121     if((regs[i].dirty>>7)&1) printf("r7 ");
11122     if((regs[i].dirty>>8)&1) printf("r8 ");
11123     if((regs[i].dirty>>9)&1) printf("r9 ");
11124     if((regs[i].dirty>>10)&1) printf("r10 ");
11125     if((regs[i].dirty>>12)&1) printf("r12 ");
11126     #endif
11127     printf("\n");
11128     if(regs[i].isconst) {
11129       printf("constants: ");
11130       #if defined(__i386__) || defined(__x86_64__)
11131       if(regs[i].isconst&1) printf("eax=%x ",(int)constmap[i][0]);
11132       if((regs[i].isconst>>1)&1) printf("ecx=%x ",(int)constmap[i][1]);
11133       if((regs[i].isconst>>2)&1) printf("edx=%x ",(int)constmap[i][2]);
11134       if((regs[i].isconst>>3)&1) printf("ebx=%x ",(int)constmap[i][3]);
11135       if((regs[i].isconst>>5)&1) printf("ebp=%x ",(int)constmap[i][5]);
11136       if((regs[i].isconst>>6)&1) printf("esi=%x ",(int)constmap[i][6]);
11137       if((regs[i].isconst>>7)&1) printf("edi=%x ",(int)constmap[i][7]);
11138       #endif
11139       #ifdef __arm__
11140       if(regs[i].isconst&1) printf("r0=%x ",(int)constmap[i][0]);
11141       if((regs[i].isconst>>1)&1) printf("r1=%x ",(int)constmap[i][1]);
11142       if((regs[i].isconst>>2)&1) printf("r2=%x ",(int)constmap[i][2]);
11143       if((regs[i].isconst>>3)&1) printf("r3=%x ",(int)constmap[i][3]);
11144       if((regs[i].isconst>>4)&1) printf("r4=%x ",(int)constmap[i][4]);
11145       if((regs[i].isconst>>5)&1) printf("r5=%x ",(int)constmap[i][5]);
11146       if((regs[i].isconst>>6)&1) printf("r6=%x ",(int)constmap[i][6]);
11147       if((regs[i].isconst>>7)&1) printf("r7=%x ",(int)constmap[i][7]);
11148       if((regs[i].isconst>>8)&1) printf("r8=%x ",(int)constmap[i][8]);
11149       if((regs[i].isconst>>9)&1) printf("r9=%x ",(int)constmap[i][9]);
11150       if((regs[i].isconst>>10)&1) printf("r10=%x ",(int)constmap[i][10]);
11151       if((regs[i].isconst>>12)&1) printf("r12=%x ",(int)constmap[i][12]);
11152       #endif
11153       printf("\n");
11154     }
11155 #ifndef FORCE32
11156     printf(" 32:");
11157     for(r=0;r<=CCREG;r++) {
11158       if((regs[i].is32>>r)&1) {
11159         if(r==CCREG) printf(" CC");
11160         else if(r==HIREG) printf(" HI");
11161         else if(r==LOREG) printf(" LO");
11162         else printf(" r%d",r);
11163       }
11164     }
11165     printf("\n");
11166 #endif
11167     /*printf(" p32:");
11168     for(r=0;r<=CCREG;r++) {
11169       if((p32[i]>>r)&1) {
11170         if(r==CCREG) printf(" CC");
11171         else if(r==HIREG) printf(" HI");
11172         else if(r==LOREG) printf(" LO");
11173         else printf(" r%d",r);
11174       }
11175     }
11176     if(p32[i]!=regs[i].is32) printf(" NO MATCH\n");
11177     else printf("\n");*/
11178     if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP) {
11179       #if defined(__i386__) || defined(__x86_64__)
11180       printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d dirty: ",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]);
11181       if(branch_regs[i].dirty&1) printf("eax ");
11182       if((branch_regs[i].dirty>>1)&1) printf("ecx ");
11183       if((branch_regs[i].dirty>>2)&1) printf("edx ");
11184       if((branch_regs[i].dirty>>3)&1) printf("ebx ");
11185       if((branch_regs[i].dirty>>5)&1) printf("ebp ");
11186       if((branch_regs[i].dirty>>6)&1) printf("esi ");
11187       if((branch_regs[i].dirty>>7)&1) printf("edi ");
11188       #endif
11189       #ifdef __arm__
11190       printf("branch(%d): r0=%d r1=%d r2=%d r3=%d r4=%d r5=%d r6=%d r7=%d r8=%d r9=%d r10=%d r12=%d dirty: ",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[4],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7],branch_regs[i].regmap[8],branch_regs[i].regmap[9],branch_regs[i].regmap[10],branch_regs[i].regmap[12]);
11191       if(branch_regs[i].dirty&1) printf("r0 ");
11192       if((branch_regs[i].dirty>>1)&1) printf("r1 ");
11193       if((branch_regs[i].dirty>>2)&1) printf("r2 ");
11194       if((branch_regs[i].dirty>>3)&1) printf("r3 ");
11195       if((branch_regs[i].dirty>>4)&1) printf("r4 ");
11196       if((branch_regs[i].dirty>>5)&1) printf("r5 ");
11197       if((branch_regs[i].dirty>>6)&1) printf("r6 ");
11198       if((branch_regs[i].dirty>>7)&1) printf("r7 ");
11199       if((branch_regs[i].dirty>>8)&1) printf("r8 ");
11200       if((branch_regs[i].dirty>>9)&1) printf("r9 ");
11201       if((branch_regs[i].dirty>>10)&1) printf("r10 ");
11202       if((branch_regs[i].dirty>>12)&1) printf("r12 ");
11203       #endif
11204 #ifndef FORCE32
11205       printf(" 32:");
11206       for(r=0;r<=CCREG;r++) {
11207         if((branch_regs[i].is32>>r)&1) {
11208           if(r==CCREG) printf(" CC");
11209           else if(r==HIREG) printf(" HI");
11210           else if(r==LOREG) printf(" LO");
11211           else printf(" r%d",r);
11212         }
11213       }
11214       printf("\n");
11215 #endif
11216     }
11217   }
11218 #endif // DISASM
11219
11220   /* Pass 8 - Assembly */
11221   linkcount=0;stubcount=0;
11222   ds=0;is_delayslot=0;
11223   cop1_usable=0;
11224   uint64_t is32_pre=0;
11225   u_int dirty_pre=0;
11226   u_int beginning=(u_int)out;
11227   if((u_int)addr&1) {
11228     ds=1;
11229     pagespan_ds();
11230   }
11231   u_int instr_addr0_override=0;
11232
11233 #ifdef PCSX
11234   if (start == 0x80030000) {
11235     // nasty hack for fastbios thing
11236     // override block entry to this code
11237     instr_addr0_override=(u_int)out;
11238     emit_movimm(start,0);
11239     // abuse io address var as a flag that we
11240     // have already returned here once
11241     emit_readword((int)&address,1);
11242     emit_writeword(0,(int)&pcaddr);
11243     emit_writeword(0,(int)&address);
11244     emit_cmp(0,1);
11245     emit_jne((int)new_dyna_leave);
11246   }
11247 #endif
11248   for(i=0;i<slen;i++)
11249   {
11250     //if(ds) printf("ds: ");
11251     disassemble_inst(i);
11252     if(ds) {
11253       ds=0; // Skip delay slot
11254       if(bt[i]) assem_debug("OOPS - branch into delay slot\n");
11255       instr_addr[i]=0;
11256     } else {
11257       speculate_register_values(i);
11258       #ifndef DESTRUCTIVE_WRITEBACK
11259       if(i<2||(itype[i-2]!=UJUMP&&itype[i-2]!=RJUMP&&(source[i-2]>>16)!=0x1000))
11260       {
11261         wb_sx(regmap_pre[i],regs[i].regmap_entry,regs[i].wasdirty,is32_pre,regs[i].was32,
11262               unneeded_reg[i],unneeded_reg_upper[i]);
11263         wb_valid(regmap_pre[i],regs[i].regmap_entry,dirty_pre,regs[i].wasdirty,is32_pre,
11264               unneeded_reg[i],unneeded_reg_upper[i]);
11265       }
11266       if((itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)&&!likely[i]) {
11267         is32_pre=branch_regs[i].is32;
11268         dirty_pre=branch_regs[i].dirty;
11269       }else{
11270         is32_pre=regs[i].is32;
11271         dirty_pre=regs[i].dirty;
11272       }
11273       #endif
11274       // write back
11275       if(i<2||(itype[i-2]!=UJUMP&&itype[i-2]!=RJUMP&&(source[i-2]>>16)!=0x1000))
11276       {
11277         wb_invalidate(regmap_pre[i],regs[i].regmap_entry,regs[i].wasdirty,regs[i].was32,
11278                       unneeded_reg[i],unneeded_reg_upper[i]);
11279         loop_preload(regmap_pre[i],regs[i].regmap_entry);
11280       }
11281       // branch target entry point
11282       instr_addr[i]=(u_int)out;
11283       assem_debug("<->\n");
11284       // load regs
11285       if(regs[i].regmap_entry[HOST_CCREG]==CCREG&&regs[i].regmap[HOST_CCREG]!=CCREG)
11286         wb_register(CCREG,regs[i].regmap_entry,regs[i].wasdirty,regs[i].was32);
11287       load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,rs1[i],rs2[i]);
11288       address_generation(i,&regs[i],regs[i].regmap_entry);
11289       load_consts(regmap_pre[i],regs[i].regmap,regs[i].was32,i);
11290       if(itype[i]==RJUMP||itype[i]==UJUMP||itype[i]==CJUMP||itype[i]==SJUMP||itype[i]==FJUMP)
11291       {
11292         // Load the delay slot registers if necessary
11293         if(rs1[i+1]!=rs1[i]&&rs1[i+1]!=rs2[i]&&(rs1[i+1]!=rt1[i]||rt1[i]==0))
11294           load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,rs1[i+1],rs1[i+1]);
11295         if(rs2[i+1]!=rs1[i+1]&&rs2[i+1]!=rs1[i]&&rs2[i+1]!=rs2[i]&&(rs2[i+1]!=rt1[i]||rt1[i]==0))
11296           load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,rs2[i+1],rs2[i+1]);
11297         if(itype[i+1]==STORE||itype[i+1]==STORELR||(opcode[i+1]&0x3b)==0x39||(opcode[i+1]&0x3b)==0x3a)
11298           load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,INVCP,INVCP);
11299       }
11300       else if(i+1<slen)
11301       {
11302         // Preload registers for following instruction
11303         if(rs1[i+1]!=rs1[i]&&rs1[i+1]!=rs2[i])
11304           if(rs1[i+1]!=rt1[i]&&rs1[i+1]!=rt2[i])
11305             load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,rs1[i+1],rs1[i+1]);
11306         if(rs2[i+1]!=rs1[i+1]&&rs2[i+1]!=rs1[i]&&rs2[i+1]!=rs2[i])
11307           if(rs2[i+1]!=rt1[i]&&rs2[i+1]!=rt2[i])
11308             load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,rs2[i+1],rs2[i+1]);
11309       }
11310       // TODO: if(is_ooo(i)) address_generation(i+1);
11311       if(itype[i]==CJUMP||itype[i]==FJUMP)
11312         load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,CCREG,CCREG);
11313       if(itype[i]==STORE||itype[i]==STORELR||(opcode[i]&0x3b)==0x39||(opcode[i]&0x3b)==0x3a)
11314         load_regs(regs[i].regmap_entry,regs[i].regmap,regs[i].was32,INVCP,INVCP);
11315       if(bt[i]) cop1_usable=0;
11316       // assemble
11317       switch(itype[i]) {
11318         case ALU:
11319           alu_assemble(i,&regs[i]);break;
11320         case IMM16:
11321           imm16_assemble(i,&regs[i]);break;
11322         case SHIFT:
11323           shift_assemble(i,&regs[i]);break;
11324         case SHIFTIMM:
11325           shiftimm_assemble(i,&regs[i]);break;
11326         case LOAD:
11327           load_assemble(i,&regs[i]);break;
11328         case LOADLR:
11329           loadlr_assemble(i,&regs[i]);break;
11330         case STORE:
11331           store_assemble(i,&regs[i]);break;
11332         case STORELR:
11333           storelr_assemble(i,&regs[i]);break;
11334         case COP0:
11335           cop0_assemble(i,&regs[i]);break;
11336         case COP1:
11337           cop1_assemble(i,&regs[i]);break;
11338         case C1LS:
11339           c1ls_assemble(i,&regs[i]);break;
11340         case COP2:
11341           cop2_assemble(i,&regs[i]);break;
11342         case C2LS:
11343           c2ls_assemble(i,&regs[i]);break;
11344         case C2OP:
11345           c2op_assemble(i,&regs[i]);break;
11346         case FCONV:
11347           fconv_assemble(i,&regs[i]);break;
11348         case FLOAT:
11349           float_assemble(i,&regs[i]);break;
11350         case FCOMP:
11351           fcomp_assemble(i,&regs[i]);break;
11352         case MULTDIV:
11353           multdiv_assemble(i,&regs[i]);break;
11354         case MOV:
11355           mov_assemble(i,&regs[i]);break;
11356         case SYSCALL:
11357           syscall_assemble(i,&regs[i]);break;
11358         case HLECALL:
11359           hlecall_assemble(i,&regs[i]);break;
11360         case INTCALL:
11361           intcall_assemble(i,&regs[i]);break;
11362         case UJUMP:
11363           ujump_assemble(i,&regs[i]);ds=1;break;
11364         case RJUMP:
11365           rjump_assemble(i,&regs[i]);ds=1;break;
11366         case CJUMP:
11367           cjump_assemble(i,&regs[i]);ds=1;break;
11368         case SJUMP:
11369           sjump_assemble(i,&regs[i]);ds=1;break;
11370         case FJUMP:
11371           fjump_assemble(i,&regs[i]);ds=1;break;
11372         case SPAN:
11373           pagespan_assemble(i,&regs[i]);break;
11374       }
11375       if(itype[i]==UJUMP||itype[i]==RJUMP||(source[i]>>16)==0x1000)
11376         literal_pool(1024);
11377       else
11378         literal_pool_jumpover(256);
11379     }
11380   }
11381   //assert(itype[i-2]==UJUMP||itype[i-2]==RJUMP||(source[i-2]>>16)==0x1000);
11382   // If the block did not end with an unconditional branch,
11383   // add a jump to the next instruction.
11384   if(i>1) {
11385     if(itype[i-2]!=UJUMP&&itype[i-2]!=RJUMP&&(source[i-2]>>16)!=0x1000&&itype[i-1]!=SPAN) {
11386       assert(itype[i-1]!=UJUMP&&itype[i-1]!=CJUMP&&itype[i-1]!=SJUMP&&itype[i-1]!=RJUMP&&itype[i-1]!=FJUMP);
11387       assert(i==slen);
11388       if(itype[i-2]!=CJUMP&&itype[i-2]!=SJUMP&&itype[i-2]!=FJUMP) {
11389         store_regs_bt(regs[i-1].regmap,regs[i-1].is32,regs[i-1].dirty,start+i*4);
11390         if(regs[i-1].regmap[HOST_CCREG]!=CCREG)
11391           emit_loadreg(CCREG,HOST_CCREG);
11392         emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i-1]+1),HOST_CCREG);
11393       }
11394       else if(!likely[i-2])
11395       {
11396         store_regs_bt(branch_regs[i-2].regmap,branch_regs[i-2].is32,branch_regs[i-2].dirty,start+i*4);
11397         assert(branch_regs[i-2].regmap[HOST_CCREG]==CCREG);
11398       }
11399       else
11400       {
11401         store_regs_bt(regs[i-2].regmap,regs[i-2].is32,regs[i-2].dirty,start+i*4);
11402         assert(regs[i-2].regmap[HOST_CCREG]==CCREG);
11403       }
11404       add_to_linker((int)out,start+i*4,0);
11405       emit_jmp(0);
11406     }
11407   }
11408   else
11409   {
11410     assert(i>0);
11411     assert(itype[i-1]!=UJUMP&&itype[i-1]!=CJUMP&&itype[i-1]!=SJUMP&&itype[i-1]!=RJUMP&&itype[i-1]!=FJUMP);
11412     store_regs_bt(regs[i-1].regmap,regs[i-1].is32,regs[i-1].dirty,start+i*4);
11413     if(regs[i-1].regmap[HOST_CCREG]!=CCREG)
11414       emit_loadreg(CCREG,HOST_CCREG);
11415     emit_addimm(HOST_CCREG,CLOCK_ADJUST(ccadj[i-1]+1),HOST_CCREG);
11416     add_to_linker((int)out,start+i*4,0);
11417     emit_jmp(0);
11418   }
11419
11420   // TODO: delay slot stubs?
11421   // Stubs
11422   for(i=0;i<stubcount;i++)
11423   {
11424     switch(stubs[i][0])
11425     {
11426       case LOADB_STUB:
11427       case LOADH_STUB:
11428       case LOADW_STUB:
11429       case LOADD_STUB:
11430       case LOADBU_STUB:
11431       case LOADHU_STUB:
11432         do_readstub(i);break;
11433       case STOREB_STUB:
11434       case STOREH_STUB:
11435       case STOREW_STUB:
11436       case STORED_STUB:
11437         do_writestub(i);break;
11438       case CC_STUB:
11439         do_ccstub(i);break;
11440       case INVCODE_STUB:
11441         do_invstub(i);break;
11442       case FP_STUB:
11443         do_cop1stub(i);break;
11444       case STORELR_STUB:
11445         do_unalignedwritestub(i);break;
11446     }
11447   }
11448
11449   if (instr_addr0_override)
11450     instr_addr[0] = instr_addr0_override;
11451
11452   /* Pass 9 - Linker */
11453   for(i=0;i<linkcount;i++)
11454   {
11455     assem_debug("%8x -> %8x\n",link_addr[i][0],link_addr[i][1]);
11456     literal_pool(64);
11457     if(!link_addr[i][2])
11458     {
11459       void *stub=out;
11460       void *addr=check_addr(link_addr[i][1]);
11461       emit_extjump(link_addr[i][0],link_addr[i][1]);
11462       if(addr) {
11463         set_jump_target(link_addr[i][0],(int)addr);
11464         add_link(link_addr[i][1],stub);
11465       }
11466       else set_jump_target(link_addr[i][0],(int)stub);
11467     }
11468     else
11469     {
11470       // Internal branch
11471       int target=(link_addr[i][1]-start)>>2;
11472       assert(target>=0&&target<slen);
11473       assert(instr_addr[target]);
11474       //#ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
11475       //set_jump_target_fillslot(link_addr[i][0],instr_addr[target],link_addr[i][2]>>1);
11476       //#else
11477       set_jump_target(link_addr[i][0],instr_addr[target]);
11478       //#endif
11479     }
11480   }
11481   // External Branch Targets (jump_in)
11482   if(copy+slen*4>(void *)shadow+sizeof(shadow)) copy=shadow;
11483   for(i=0;i<slen;i++)
11484   {
11485     if(bt[i]||i==0)
11486     {
11487       if(instr_addr[i]) // TODO - delay slots (=null)
11488       {
11489         u_int vaddr=start+i*4;
11490         u_int page=get_page(vaddr);
11491         u_int vpage=get_vpage(vaddr);
11492         literal_pool(256);
11493         //if(!(is32[i]&(~unneeded_reg_upper[i])&~(1LL<<CCREG)))
11494 #ifndef FORCE32
11495         if(!requires_32bit[i])
11496 #else
11497         if(1)
11498 #endif
11499         {
11500           assem_debug("%8x (%d) <- %8x\n",instr_addr[i],i,start+i*4);
11501           assem_debug("jump_in: %x\n",start+i*4);
11502           ll_add(jump_dirty+vpage,vaddr,(void *)out);
11503           int entry_point=do_dirty_stub(i);
11504           ll_add(jump_in+page,vaddr,(void *)entry_point);
11505           // If there was an existing entry in the hash table,
11506           // replace it with the new address.
11507           // Don't add new entries.  We'll insert the
11508           // ones that actually get used in check_addr().
11509           int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
11510           if(ht_bin[0]==vaddr) {
11511             ht_bin[1]=entry_point;
11512           }
11513           if(ht_bin[2]==vaddr) {
11514             ht_bin[3]=entry_point;
11515           }
11516         }
11517         else
11518         {
11519           u_int r=requires_32bit[i]|!!(requires_32bit[i]>>32);
11520           assem_debug("%8x (%d) <- %8x\n",instr_addr[i],i,start+i*4);
11521           assem_debug("jump_in: %x (restricted - %x)\n",start+i*4,r);
11522           //int entry_point=(int)out;
11523           ////assem_debug("entry_point: %x\n",entry_point);
11524           //load_regs_entry(i);
11525           //if(entry_point==(int)out)
11526           //  entry_point=instr_addr[i];
11527           //else
11528           //  emit_jmp(instr_addr[i]);
11529           //ll_add_32(jump_in+page,vaddr,r,(void *)entry_point);
11530           ll_add_32(jump_dirty+vpage,vaddr,r,(void *)out);
11531           int entry_point=do_dirty_stub(i);
11532           ll_add_32(jump_in+page,vaddr,r,(void *)entry_point);
11533         }
11534       }
11535     }
11536   }
11537   // Write out the literal pool if necessary
11538   literal_pool(0);
11539   #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
11540   // Align code
11541   if(((u_int)out)&7) emit_addnop(13);
11542   #endif
11543   assert((u_int)out-beginning<MAX_OUTPUT_BLOCK_SIZE);
11544   //printf("shadow buffer: %x-%x\n",(int)copy,(int)copy+slen*4);
11545   memcpy(copy,source,slen*4);
11546   copy+=slen*4;
11547
11548   #ifdef __arm__
11549   __clear_cache((void *)beginning,out);
11550   #endif
11551
11552   // If we're within 256K of the end of the buffer,
11553   // start over from the beginning. (Is 256K enough?)
11554   if((u_int)out>(u_int)BASE_ADDR+(1<<TARGET_SIZE_2)-MAX_OUTPUT_BLOCK_SIZE) out=(u_char *)BASE_ADDR;
11555
11556   // Trap writes to any of the pages we compiled
11557   for(i=start>>12;i<=(start+slen*4)>>12;i++) {
11558     invalid_code[i]=0;
11559 #ifndef DISABLE_TLB
11560     memory_map[i]|=0x40000000;
11561     if((signed int)start>=(signed int)0xC0000000) {
11562       assert(using_tlb);
11563       j=(((u_int)i<<12)+(memory_map[i]<<2)-(u_int)rdram+(u_int)0x80000000)>>12;
11564       invalid_code[j]=0;
11565       memory_map[j]|=0x40000000;
11566       //printf("write protect physical page: %x (virtual %x)\n",j<<12,start);
11567     }
11568 #endif
11569   }
11570   inv_code_start=inv_code_end=~0;
11571 #ifdef PCSX
11572   // for PCSX we need to mark all mirrors too
11573   if(get_page(start)<(RAM_SIZE>>12))
11574     for(i=start>>12;i<=(start+slen*4)>>12;i++)
11575       invalid_code[((u_int)0x00000000>>12)|(i&0x1ff)]=
11576       invalid_code[((u_int)0x80000000>>12)|(i&0x1ff)]=
11577       invalid_code[((u_int)0xa0000000>>12)|(i&0x1ff)]=0;
11578 #endif
11579
11580   /* Pass 10 - Free memory by expiring oldest blocks */
11581
11582   int end=((((int)out-(int)BASE_ADDR)>>(TARGET_SIZE_2-16))+16384)&65535;
11583   while(expirep!=end)
11584   {
11585     int shift=TARGET_SIZE_2-3; // Divide into 8 blocks
11586     int base=(int)BASE_ADDR+((expirep>>13)<<shift); // Base address of this block
11587     inv_debug("EXP: Phase %d\n",expirep);
11588     switch((expirep>>11)&3)
11589     {
11590       case 0:
11591         // Clear jump_in and jump_dirty
11592         ll_remove_matching_addrs(jump_in+(expirep&2047),base,shift);
11593         ll_remove_matching_addrs(jump_dirty+(expirep&2047),base,shift);
11594         ll_remove_matching_addrs(jump_in+2048+(expirep&2047),base,shift);
11595         ll_remove_matching_addrs(jump_dirty+2048+(expirep&2047),base,shift);
11596         break;
11597       case 1:
11598         // Clear pointers
11599         ll_kill_pointers(jump_out[expirep&2047],base,shift);
11600         ll_kill_pointers(jump_out[(expirep&2047)+2048],base,shift);
11601         break;
11602       case 2:
11603         // Clear hash table
11604         for(i=0;i<32;i++) {
11605           int *ht_bin=hash_table[((expirep&2047)<<5)+i];
11606           if((ht_bin[3]>>shift)==(base>>shift) ||
11607              ((ht_bin[3]-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(base>>shift)) {
11608             inv_debug("EXP: Remove hash %x -> %x\n",ht_bin[2],ht_bin[3]);
11609             ht_bin[2]=ht_bin[3]=-1;
11610           }
11611           if((ht_bin[1]>>shift)==(base>>shift) ||
11612              ((ht_bin[1]-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(base>>shift)) {
11613             inv_debug("EXP: Remove hash %x -> %x\n",ht_bin[0],ht_bin[1]);
11614             ht_bin[0]=ht_bin[2];
11615             ht_bin[1]=ht_bin[3];
11616             ht_bin[2]=ht_bin[3]=-1;
11617           }
11618         }
11619         break;
11620       case 3:
11621         // Clear jump_out
11622         #ifdef __arm__
11623         if((expirep&2047)==0)
11624           do_clear_cache();
11625         #endif
11626         ll_remove_matching_addrs(jump_out+(expirep&2047),base,shift);
11627         ll_remove_matching_addrs(jump_out+2048+(expirep&2047),base,shift);
11628         break;
11629     }
11630     expirep=(expirep+1)&65535;
11631   }
11632   return 0;
11633 }
11634
11635 // vim:shiftwidth=2:expandtab