drc: get rid of pass 7/provisional_r32 too
[pcsx_rearmed.git] / libpcsxcore / new_dynarec / new_dynarec.c
1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
2  *   Mupen64plus - new_dynarec.c                                           *
3  *   Copyright (C) 2009-2010 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
25 #include "emu_if.h" //emulator interface
26
27 #include <sys/mman.h>
28
29 #ifdef __i386__
30 #include "assem_x86.h"
31 #endif
32 #ifdef __x86_64__
33 #include "assem_x64.h"
34 #endif
35 #ifdef __arm__
36 #include "assem_arm.h"
37 #endif
38
39 #define MAXBLOCK 4096
40 #define MAX_OUTPUT_BLOCK_SIZE 262144
41 #define CLOCK_DIVIDER 2
42
43 struct regstat
44 {
45   signed char regmap_entry[HOST_REGS];
46   signed char regmap[HOST_REGS];
47   uint64_t was32;
48   uint64_t is32;
49   uint64_t wasdirty;
50   uint64_t dirty;
51   uint64_t u;
52   uint64_t uu;
53   u_int wasconst;
54   u_int isconst;
55   uint64_t constmap[HOST_REGS];
56 };
57
58 struct ll_entry
59 {
60   u_int vaddr;
61   u_int reg32;
62   void *addr;
63   struct ll_entry *next;
64 };
65
66   u_int start;
67   u_int *source;
68   u_int pagelimit;
69   char insn[MAXBLOCK][10];
70   u_char itype[MAXBLOCK];
71   u_char opcode[MAXBLOCK];
72   u_char opcode2[MAXBLOCK];
73   u_char bt[MAXBLOCK];
74   u_char rs1[MAXBLOCK];
75   u_char rs2[MAXBLOCK];
76   u_char rt1[MAXBLOCK];
77   u_char rt2[MAXBLOCK];
78   u_char us1[MAXBLOCK];
79   u_char us2[MAXBLOCK];
80   u_char dep1[MAXBLOCK];
81   u_char dep2[MAXBLOCK];
82   u_char lt1[MAXBLOCK];
83   int imm[MAXBLOCK];
84   u_int ba[MAXBLOCK];
85   char likely[MAXBLOCK];
86   char is_ds[MAXBLOCK];
87   uint64_t unneeded_reg[MAXBLOCK];
88   uint64_t unneeded_reg_upper[MAXBLOCK];
89   uint64_t branch_unneeded_reg[MAXBLOCK];
90   uint64_t branch_unneeded_reg_upper[MAXBLOCK];
91   uint64_t p32[MAXBLOCK];
92   uint64_t pr32[MAXBLOCK];
93   signed char regmap_pre[MAXBLOCK][HOST_REGS];
94   signed char regmap[MAXBLOCK][HOST_REGS];
95   signed char regmap_entry[MAXBLOCK][HOST_REGS];
96   uint64_t constmap[MAXBLOCK][HOST_REGS];
97   uint64_t known_value[HOST_REGS];
98   u_int known_reg;
99   struct regstat regs[MAXBLOCK];
100   struct regstat branch_regs[MAXBLOCK];
101   u_int needed_reg[MAXBLOCK];
102   uint64_t requires_32bit[MAXBLOCK];
103   u_int wont_dirty[MAXBLOCK];
104   u_int will_dirty[MAXBLOCK];
105   int ccadj[MAXBLOCK];
106   int slen;
107   u_int instr_addr[MAXBLOCK];
108   u_int link_addr[MAXBLOCK][3];
109   int linkcount;
110   u_int stubs[MAXBLOCK*3][8];
111   int stubcount;
112   u_int literals[1024][2];
113   int literalcount;
114   int is_delayslot;
115   int cop1_usable;
116   u_char *out;
117   struct ll_entry *jump_in[4096];
118   struct ll_entry *jump_out[4096];
119   struct ll_entry *jump_dirty[4096];
120   u_int hash_table[65536][4]  __attribute__((aligned(16)));
121   char shadow[1048576]  __attribute__((aligned(16)));
122   void *copy;
123   int expirep;
124   u_int using_tlb;
125   u_int stop_after_jal;
126   extern u_char restore_candidate[512];
127   extern int cycle_count;
128
129   /* registers that may be allocated */
130   /* 1-31 gpr */
131 #define HIREG 32 // hi
132 #define LOREG 33 // lo
133 #define FSREG 34 // FPU status (FCSR)
134 #define CSREG 35 // Coprocessor status
135 #define CCREG 36 // Cycle count
136 #define INVCP 37 // Pointer to invalid_code
137 #define TEMPREG 38
138 #define FTEMP 38 // FPU/LDL/LDR temporary register
139 #define PTEMP 39 // Prefetch temporary register
140 #define TLREG 40 // TLB mapping offset
141 #define RHASH 41 // Return address hash
142 #define RHTBL 42 // Return address hash table address
143 #define RTEMP 43 // JR/JALR address register
144 #define MAXREG 43
145 #define AGEN1 44 // Address generation temporary register
146 #define AGEN2 45 // Address generation temporary register
147 #define MGEN1 46 // Maptable address generation temporary register
148 #define MGEN2 47 // Maptable address generation temporary register
149 #define BTREG 48 // Branch target temporary register
150
151   /* instruction types */
152 #define NOP 0     // No operation
153 #define LOAD 1    // Load
154 #define STORE 2   // Store
155 #define LOADLR 3  // Unaligned load
156 #define STORELR 4 // Unaligned store
157 #define MOV 5     // Move 
158 #define ALU 6     // Arithmetic/logic
159 #define MULTDIV 7 // Multiply/divide
160 #define SHIFT 8   // Shift by register
161 #define SHIFTIMM 9// Shift by immediate
162 #define IMM16 10  // 16-bit immediate
163 #define RJUMP 11  // Unconditional jump to register
164 #define UJUMP 12  // Unconditional jump
165 #define CJUMP 13  // Conditional branch (BEQ/BNE/BGTZ/BLEZ)
166 #define SJUMP 14  // Conditional branch (regimm format)
167 #define COP0 15   // Coprocessor 0
168 #define COP1 16   // Coprocessor 1
169 #define C1LS 17   // Coprocessor 1 load/store
170 #define FJUMP 18  // Conditional branch (floating point)
171 #define FLOAT 19  // Floating point unit
172 #define FCONV 20  // Convert integer to float
173 #define FCOMP 21  // Floating point compare (sets FSREG)
174 #define SYSCALL 22// SYSCALL
175 #define OTHER 23  // Other
176 #define SPAN 24   // Branch/delay slot spans 2 pages
177 #define NI 25     // Not implemented
178 #define HLECALL 26// PCSX fake opcodes for HLE
179 #define COP2 27   // Coprocessor 2 move
180 #define C2LS 28   // Coprocessor 2 load/store
181 #define C2OP 29   // Coprocessor 2 operation
182 #define INTCALL 30// Call interpreter to handle rare corner cases
183
184   /* stubs */
185 #define CC_STUB 1
186 #define FP_STUB 2
187 #define LOADB_STUB 3
188 #define LOADH_STUB 4
189 #define LOADW_STUB 5
190 #define LOADD_STUB 6
191 #define LOADBU_STUB 7
192 #define LOADHU_STUB 8
193 #define STOREB_STUB 9
194 #define STOREH_STUB 10
195 #define STOREW_STUB 11
196 #define STORED_STUB 12
197 #define STORELR_STUB 13
198 #define INVCODE_STUB 14
199
200   /* branch codes */
201 #define TAKEN 1
202 #define NOTTAKEN 2
203 #define NULLDS 3
204
205 // asm linkage
206 int new_recompile_block(int addr);
207 void *get_addr_ht(u_int vaddr);
208 void invalidate_block(u_int block);
209 void invalidate_addr(u_int addr);
210 void remove_hash(int vaddr);
211 void jump_vaddr();
212 void dyna_linker();
213 void dyna_linker_ds();
214 void verify_code();
215 void verify_code_vm();
216 void verify_code_ds();
217 void cc_interrupt();
218 void fp_exception();
219 void fp_exception_ds();
220 void jump_syscall();
221 void jump_syscall_hle();
222 void jump_eret();
223 void jump_hlecall();
224 void jump_intcall();
225 void new_dyna_leave();
226
227 // TLB
228 void TLBWI_new();
229 void TLBWR_new();
230 void read_nomem_new();
231 void read_nomemb_new();
232 void read_nomemh_new();
233 void read_nomemd_new();
234 void write_nomem_new();
235 void write_nomemb_new();
236 void write_nomemh_new();
237 void write_nomemd_new();
238 void write_rdram_new();
239 void write_rdramb_new();
240 void write_rdramh_new();
241 void write_rdramd_new();
242 extern u_int memory_map[1048576];
243
244 // Needed by assembler
245 void wb_register(signed char r,signed char regmap[],uint64_t dirty,uint64_t is32);
246 void wb_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty);
247 void wb_needed_dirtys(signed char i_regmap[],uint64_t i_is32,uint64_t i_dirty,int addr);
248 void load_all_regs(signed char i_regmap[]);
249 void load_needed_regs(signed char i_regmap[],signed char next_regmap[]);
250 void load_regs_entry(int t);
251 void load_all_consts(signed char regmap[],int is32,u_int dirty,int i);
252
253 int tracedebug=0;
254
255 //#define DEBUG_CYCLE_COUNT 1
256
257 void nullf() {}
258 //#define assem_debug printf
259 //#define inv_debug printf
260 #define assem_debug nullf
261 #define inv_debug nullf
262
263 static void tlb_hacks()
264 {
265 #ifndef DISABLE_TLB
266   // Goldeneye hack
267   if (strncmp((char *) ROM_HEADER->nom, "GOLDENEYE",9) == 0)
268   {
269     u_int addr;
270     int n;
271     switch (ROM_HEADER->Country_code&0xFF) 
272     {
273       case 0x45: // U
274         addr=0x34b30;
275         break;                   
276       case 0x4A: // J 
277         addr=0x34b70;    
278         break;    
279       case 0x50: // E 
280         addr=0x329f0;
281         break;                        
282       default: 
283         // Unknown country code
284         addr=0;
285         break;
286     }
287     u_int rom_addr=(u_int)rom;
288     #ifdef ROM_COPY
289     // Since memory_map is 32-bit, on 64-bit systems the rom needs to be
290     // in the lower 4G of memory to use this hack.  Copy it if necessary.
291     if((void *)rom>(void *)0xffffffff) {
292       munmap(ROM_COPY, 67108864);
293       if(mmap(ROM_COPY, 12582912,
294               PROT_READ | PROT_WRITE,
295               MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
296               -1, 0) <= 0) {printf("mmap() failed\n");}
297       memcpy(ROM_COPY,rom,12582912);
298       rom_addr=(u_int)ROM_COPY;
299     }
300     #endif
301     if(addr) {
302       for(n=0x7F000;n<0x80000;n++) {
303         memory_map[n]=(((u_int)(rom_addr+addr-0x7F000000))>>2)|0x40000000;
304       }
305     }
306   }
307 #endif
308 }
309
310 static u_int get_page(u_int vaddr)
311 {
312 #ifndef PCSX
313   u_int page=(vaddr^0x80000000)>>12;
314 #else
315   u_int page=vaddr&~0xe0000000;
316   if (page < 0x1000000)
317     page &= ~0x0e00000; // RAM mirrors
318   page>>=12;
319 #endif
320 #ifndef DISABLE_TLB
321   if(page>262143&&tlb_LUT_r[vaddr>>12]) page=(tlb_LUT_r[vaddr>>12]^0x80000000)>>12;
322 #endif
323   if(page>2048) page=2048+(page&2047);
324   return page;
325 }
326
327 static u_int get_vpage(u_int vaddr)
328 {
329   u_int vpage=(vaddr^0x80000000)>>12;
330 #ifndef DISABLE_TLB
331   if(vpage>262143&&tlb_LUT_r[vaddr>>12]) vpage&=2047; // jump_dirty uses a hash of the virtual address instead
332 #endif
333   if(vpage>2048) vpage=2048+(vpage&2047);
334   return vpage;
335 }
336
337 // Get address from virtual address
338 // This is called from the recompiled JR/JALR instructions
339 void *get_addr(u_int vaddr)
340 {
341   u_int page=get_page(vaddr);
342   u_int vpage=get_vpage(vaddr);
343   struct ll_entry *head;
344   //printf("TRACE: count=%d next=%d (get_addr %x,page %d)\n",Count,next_interupt,vaddr,page);
345   head=jump_in[page];
346   while(head!=NULL) {
347     if(head->vaddr==vaddr&&head->reg32==0) {
348   //printf("TRACE: count=%d next=%d (get_addr match %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
349       int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
350       ht_bin[3]=ht_bin[1];
351       ht_bin[2]=ht_bin[0];
352       ht_bin[1]=(int)head->addr;
353       ht_bin[0]=vaddr;
354       return head->addr;
355     }
356     head=head->next;
357   }
358   head=jump_dirty[vpage];
359   while(head!=NULL) {
360     if(head->vaddr==vaddr&&head->reg32==0) {
361       //printf("TRACE: count=%d next=%d (get_addr match dirty %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
362       // Don't restore blocks which are about to expire from the cache
363       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
364       if(verify_dirty(head->addr)) {
365         //printf("restore candidate: %x (%d) d=%d\n",vaddr,page,invalid_code[vaddr>>12]);
366         invalid_code[vaddr>>12]=0;
367         memory_map[vaddr>>12]|=0x40000000;
368         if(vpage<2048) {
369 #ifndef DISABLE_TLB
370           if(tlb_LUT_r[vaddr>>12]) {
371             invalid_code[tlb_LUT_r[vaddr>>12]>>12]=0;
372             memory_map[tlb_LUT_r[vaddr>>12]>>12]|=0x40000000;
373           }
374 #endif
375           restore_candidate[vpage>>3]|=1<<(vpage&7);
376         }
377         else restore_candidate[page>>3]|=1<<(page&7);
378         int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
379         if(ht_bin[0]==vaddr) {
380           ht_bin[1]=(int)head->addr; // Replace existing entry
381         }
382         else
383         {
384           ht_bin[3]=ht_bin[1];
385           ht_bin[2]=ht_bin[0];
386           ht_bin[1]=(int)head->addr;
387           ht_bin[0]=vaddr;
388         }
389         return head->addr;
390       }
391     }
392     head=head->next;
393   }
394   //printf("TRACE: count=%d next=%d (get_addr no-match %x)\n",Count,next_interupt,vaddr);
395   int r=new_recompile_block(vaddr);
396   if(r==0) return get_addr(vaddr);
397   // Execute in unmapped page, generate pagefault execption
398   Status|=2;
399   Cause=(vaddr<<31)|0x8;
400   EPC=(vaddr&1)?vaddr-5:vaddr;
401   BadVAddr=(vaddr&~1);
402   Context=(Context&0xFF80000F)|((BadVAddr>>9)&0x007FFFF0);
403   EntryHi=BadVAddr&0xFFFFE000;
404   return get_addr_ht(0x80000000);
405 }
406 // Look up address in hash table first
407 void *get_addr_ht(u_int vaddr)
408 {
409   //printf("TRACE: count=%d next=%d (get_addr_ht %x)\n",Count,next_interupt,vaddr);
410   int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
411   if(ht_bin[0]==vaddr) return (void *)ht_bin[1];
412   if(ht_bin[2]==vaddr) return (void *)ht_bin[3];
413   return get_addr(vaddr);
414 }
415
416 void *get_addr_32(u_int vaddr,u_int flags)
417 {
418 #ifdef FORCE32
419   return get_addr(vaddr);
420 #else
421   //printf("TRACE: count=%d next=%d (get_addr_32 %x,flags %x)\n",Count,next_interupt,vaddr,flags);
422   int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
423   if(ht_bin[0]==vaddr) return (void *)ht_bin[1];
424   if(ht_bin[2]==vaddr) return (void *)ht_bin[3];
425   u_int page=get_page(vaddr);
426   u_int vpage=get_vpage(vaddr);
427   struct ll_entry *head;
428   head=jump_in[page];
429   while(head!=NULL) {
430     if(head->vaddr==vaddr&&(head->reg32&flags)==0) {
431       //printf("TRACE: count=%d next=%d (get_addr_32 match %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
432       if(head->reg32==0) {
433         int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
434         if(ht_bin[0]==-1) {
435           ht_bin[1]=(int)head->addr;
436           ht_bin[0]=vaddr;
437         }else if(ht_bin[2]==-1) {
438           ht_bin[3]=(int)head->addr;
439           ht_bin[2]=vaddr;
440         }
441         //ht_bin[3]=ht_bin[1];
442         //ht_bin[2]=ht_bin[0];
443         //ht_bin[1]=(int)head->addr;
444         //ht_bin[0]=vaddr;
445       }
446       return head->addr;
447     }
448     head=head->next;
449   }
450   head=jump_dirty[vpage];
451   while(head!=NULL) {
452     if(head->vaddr==vaddr&&(head->reg32&flags)==0) {
453       //printf("TRACE: count=%d next=%d (get_addr_32 match dirty %x: %x)\n",Count,next_interupt,vaddr,(int)head->addr);
454       // Don't restore blocks which are about to expire from the cache
455       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
456       if(verify_dirty(head->addr)) {
457         //printf("restore candidate: %x (%d) d=%d\n",vaddr,page,invalid_code[vaddr>>12]);
458         invalid_code[vaddr>>12]=0;
459         memory_map[vaddr>>12]|=0x40000000;
460         if(vpage<2048) {
461 #ifndef DISABLE_TLB
462           if(tlb_LUT_r[vaddr>>12]) {
463             invalid_code[tlb_LUT_r[vaddr>>12]>>12]=0;
464             memory_map[tlb_LUT_r[vaddr>>12]>>12]|=0x40000000;
465           }
466 #endif
467           restore_candidate[vpage>>3]|=1<<(vpage&7);
468         }
469         else restore_candidate[page>>3]|=1<<(page&7);
470         if(head->reg32==0) {
471           int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
472           if(ht_bin[0]==-1) {
473             ht_bin[1]=(int)head->addr;
474             ht_bin[0]=vaddr;
475           }else if(ht_bin[2]==-1) {
476             ht_bin[3]=(int)head->addr;
477             ht_bin[2]=vaddr;
478           }
479           //ht_bin[3]=ht_bin[1];
480           //ht_bin[2]=ht_bin[0];
481           //ht_bin[1]=(int)head->addr;
482           //ht_bin[0]=vaddr;
483         }
484         return head->addr;
485       }
486     }
487     head=head->next;
488   }
489   //printf("TRACE: count=%d next=%d (get_addr_32 no-match %x,flags %x)\n",Count,next_interupt,vaddr,flags);
490   int r=new_recompile_block(vaddr);
491   if(r==0) return get_addr(vaddr);
492   // Execute in unmapped page, generate pagefault execption
493   Status|=2;
494   Cause=(vaddr<<31)|0x8;
495   EPC=(vaddr&1)?vaddr-5:vaddr;
496   BadVAddr=(vaddr&~1);
497   Context=(Context&0xFF80000F)|((BadVAddr>>9)&0x007FFFF0);
498   EntryHi=BadVAddr&0xFFFFE000;
499   return get_addr_ht(0x80000000);
500 #endif
501 }
502
503 void clear_all_regs(signed char regmap[])
504 {
505   int hr;
506   for (hr=0;hr<HOST_REGS;hr++) regmap[hr]=-1;
507 }
508
509 signed char get_reg(signed char regmap[],int r)
510 {
511   int hr;
512   for (hr=0;hr<HOST_REGS;hr++) if(hr!=EXCLUDE_REG&&regmap[hr]==r) return hr;
513   return -1;
514 }
515
516 // Find a register that is available for two consecutive cycles
517 signed char get_reg2(signed char regmap1[],signed char regmap2[],int r)
518 {
519   int hr;
520   for (hr=0;hr<HOST_REGS;hr++) if(hr!=EXCLUDE_REG&&regmap1[hr]==r&&regmap2[hr]==r) return hr;
521   return -1;
522 }
523
524 int count_free_regs(signed char regmap[])
525 {
526   int count=0;
527   int hr;
528   for(hr=0;hr<HOST_REGS;hr++)
529   {
530     if(hr!=EXCLUDE_REG) {
531       if(regmap[hr]<0) count++;
532     }
533   }
534   return count;
535 }
536
537 void dirty_reg(struct regstat *cur,signed char reg)
538 {
539   int hr;
540   if(!reg) return;
541   for (hr=0;hr<HOST_REGS;hr++) {
542     if((cur->regmap[hr]&63)==reg) {
543       cur->dirty|=1<<hr;
544     }
545   }
546 }
547
548 // If we dirty the lower half of a 64 bit register which is now being
549 // sign-extended, we need to dump the upper half.
550 // Note: Do this only after completion of the instruction, because
551 // some instructions may need to read the full 64-bit value even if
552 // overwriting it (eg SLTI, DSRA32).
553 static void flush_dirty_uppers(struct regstat *cur)
554 {
555   int hr,reg;
556   for (hr=0;hr<HOST_REGS;hr++) {
557     if((cur->dirty>>hr)&1) {
558       reg=cur->regmap[hr];
559       if(reg>=64) 
560         if((cur->is32>>(reg&63))&1) cur->regmap[hr]=-1;
561     }
562   }
563 }
564
565 void set_const(struct regstat *cur,signed char reg,uint64_t value)
566 {
567   int hr;
568   if(!reg) return;
569   for (hr=0;hr<HOST_REGS;hr++) {
570     if(cur->regmap[hr]==reg) {
571       cur->isconst|=1<<hr;
572       cur->constmap[hr]=value;
573     }
574     else if((cur->regmap[hr]^64)==reg) {
575       cur->isconst|=1<<hr;
576       cur->constmap[hr]=value>>32;
577     }
578   }
579 }
580
581 void clear_const(struct regstat *cur,signed char reg)
582 {
583   int hr;
584   if(!reg) return;
585   for (hr=0;hr<HOST_REGS;hr++) {
586     if((cur->regmap[hr]&63)==reg) {
587       cur->isconst&=~(1<<hr);
588     }
589   }
590 }
591
592 int is_const(struct regstat *cur,signed char reg)
593 {
594   int hr;
595   if(!reg) return 1;
596   for (hr=0;hr<HOST_REGS;hr++) {
597     if((cur->regmap[hr]&63)==reg) {
598       return (cur->isconst>>hr)&1;
599     }
600   }
601   return 0;
602 }
603 uint64_t get_const(struct regstat *cur,signed char reg)
604 {
605   int hr;
606   if(!reg) return 0;
607   for (hr=0;hr<HOST_REGS;hr++) {
608     if(cur->regmap[hr]==reg) {
609       return cur->constmap[hr];
610     }
611   }
612   printf("Unknown constant in r%d\n",reg);
613   exit(1);
614 }
615
616 // Least soon needed registers
617 // Look at the next ten instructions and see which registers
618 // will be used.  Try not to reallocate these.
619 void lsn(u_char hsn[], int i, int *preferred_reg)
620 {
621   int j;
622   int b=-1;
623   for(j=0;j<9;j++)
624   {
625     if(i+j>=slen) {
626       j=slen-i-1;
627       break;
628     }
629     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
630     {
631       // Don't go past an unconditonal jump
632       j++;
633       break;
634     }
635   }
636   for(;j>=0;j--)
637   {
638     if(rs1[i+j]) hsn[rs1[i+j]]=j;
639     if(rs2[i+j]) hsn[rs2[i+j]]=j;
640     if(rt1[i+j]) hsn[rt1[i+j]]=j;
641     if(rt2[i+j]) hsn[rt2[i+j]]=j;
642     if(itype[i+j]==STORE || itype[i+j]==STORELR) {
643       // Stores can allocate zero
644       hsn[rs1[i+j]]=j;
645       hsn[rs2[i+j]]=j;
646     }
647     // On some architectures stores need invc_ptr
648     #if defined(HOST_IMM8)
649     if(itype[i+j]==STORE || itype[i+j]==STORELR || (opcode[i+j]&0x3b)==0x39 || (opcode[i+j]&0x3b)==0x3a) {
650       hsn[INVCP]=j;
651     }
652     #endif
653     if(i+j>=0&&(itype[i+j]==UJUMP||itype[i+j]==CJUMP||itype[i+j]==SJUMP||itype[i+j]==FJUMP))
654     {
655       hsn[CCREG]=j;
656       b=j;
657     }
658   }
659   if(b>=0)
660   {
661     if(ba[i+b]>=start && ba[i+b]<(start+slen*4))
662     {
663       // Follow first branch
664       int t=(ba[i+b]-start)>>2;
665       j=7-b;if(t+j>=slen) j=slen-t-1;
666       for(;j>=0;j--)
667       {
668         if(rs1[t+j]) if(hsn[rs1[t+j]]>j+b+2) hsn[rs1[t+j]]=j+b+2;
669         if(rs2[t+j]) if(hsn[rs2[t+j]]>j+b+2) hsn[rs2[t+j]]=j+b+2;
670         //if(rt1[t+j]) if(hsn[rt1[t+j]]>j+b+2) hsn[rt1[t+j]]=j+b+2;
671         //if(rt2[t+j]) if(hsn[rt2[t+j]]>j+b+2) hsn[rt2[t+j]]=j+b+2;
672       }
673     }
674     // TODO: preferred register based on backward branch
675   }
676   // Delay slot should preferably not overwrite branch conditions or cycle count
677   if(i>0&&(itype[i-1]==RJUMP||itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP)) {
678     if(rs1[i-1]) if(hsn[rs1[i-1]]>1) hsn[rs1[i-1]]=1;
679     if(rs2[i-1]) if(hsn[rs2[i-1]]>1) hsn[rs2[i-1]]=1;
680     hsn[CCREG]=1;
681     // ...or hash tables
682     hsn[RHASH]=1;
683     hsn[RHTBL]=1;
684   }
685   // Coprocessor load/store needs FTEMP, even if not declared
686   if(itype[i]==C1LS||itype[i]==C2LS) {
687     hsn[FTEMP]=0;
688   }
689   // Load L/R also uses FTEMP as a temporary register
690   if(itype[i]==LOADLR) {
691     hsn[FTEMP]=0;
692   }
693   // Also SWL/SWR/SDL/SDR
694   if(opcode[i]==0x2a||opcode[i]==0x2e||opcode[i]==0x2c||opcode[i]==0x2d) {
695     hsn[FTEMP]=0;
696   }
697   // Don't remove the TLB registers either
698   if(itype[i]==LOAD || itype[i]==LOADLR || itype[i]==STORE || itype[i]==STORELR || itype[i]==C1LS || itype[i]==C2LS) {
699     hsn[TLREG]=0;
700   }
701   // Don't remove the miniht registers
702   if(itype[i]==UJUMP||itype[i]==RJUMP)
703   {
704     hsn[RHASH]=0;
705     hsn[RHTBL]=0;
706   }
707 }
708
709 // We only want to allocate registers if we're going to use them again soon
710 int needed_again(int r, int i)
711 {
712   int j;
713   int b=-1;
714   int rn=10;
715   int hr;
716   u_char hsn[MAXREG+1];
717   int preferred_reg;
718   
719   memset(hsn,10,sizeof(hsn));
720   lsn(hsn,i,&preferred_reg);
721   
722   if(i>0&&(itype[i-1]==UJUMP||itype[i-1]==RJUMP||(source[i-1]>>16)==0x1000))
723   {
724     if(ba[i-1]<start || ba[i-1]>start+slen*4-4)
725       return 0; // Don't need any registers if exiting the block
726   }
727   for(j=0;j<9;j++)
728   {
729     if(i+j>=slen) {
730       j=slen-i-1;
731       break;
732     }
733     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
734     {
735       // Don't go past an unconditonal jump
736       j++;
737       break;
738     }
739     if(itype[i+j]==SYSCALL||itype[i+j]==HLECALL||itype[i+j]==INTCALL||((source[i+j]&0xfc00003f)==0x0d))
740     {
741       break;
742     }
743   }
744   for(;j>=1;j--)
745   {
746     if(rs1[i+j]==r) rn=j;
747     if(rs2[i+j]==r) rn=j;
748     if((unneeded_reg[i+j]>>r)&1) rn=10;
749     if(i+j>=0&&(itype[i+j]==UJUMP||itype[i+j]==CJUMP||itype[i+j]==SJUMP||itype[i+j]==FJUMP))
750     {
751       b=j;
752     }
753   }
754   /*
755   if(b>=0)
756   {
757     if(ba[i+b]>=start && ba[i+b]<(start+slen*4))
758     {
759       // Follow first branch
760       int o=rn;
761       int t=(ba[i+b]-start)>>2;
762       j=7-b;if(t+j>=slen) j=slen-t-1;
763       for(;j>=0;j--)
764       {
765         if(!((unneeded_reg[t+j]>>r)&1)) {
766           if(rs1[t+j]==r) if(rn>j+b+2) rn=j+b+2;
767           if(rs2[t+j]==r) if(rn>j+b+2) rn=j+b+2;
768         }
769         else rn=o;
770       }
771     }
772   }*/
773   for(hr=0;hr<HOST_REGS;hr++) {
774     if(hr!=EXCLUDE_REG) {
775       if(rn<hsn[hr]) return 1;
776     }
777   }
778   return 0;
779 }
780
781 // Try to match register allocations at the end of a loop with those
782 // at the beginning
783 int loop_reg(int i, int r, int hr)
784 {
785   int j,k;
786   for(j=0;j<9;j++)
787   {
788     if(i+j>=slen) {
789       j=slen-i-1;
790       break;
791     }
792     if(itype[i+j]==UJUMP||itype[i+j]==RJUMP||(source[i+j]>>16)==0x1000)
793     {
794       // Don't go past an unconditonal jump
795       j++;
796       break;
797     }
798   }
799   k=0;
800   if(i>0){
801     if(itype[i-1]==UJUMP||itype[i-1]==CJUMP||itype[i-1]==SJUMP||itype[i-1]==FJUMP)
802       k--;
803   }
804   for(;k<j;k++)
805   {
806     if(r<64&&((unneeded_reg[i+k]>>r)&1)) return hr;
807     if(r>64&&((unneeded_reg_upper[i+k]>>r)&1)) return hr;
808     if(i+k>=0&&(itype[i+k]==UJUMP||itype[i+k]==CJUMP||itype[i+k]==SJUMP||itype[i+k]==FJUMP))
809     {
810       if(ba[i+k]>=start && ba[i+k]<(start+i*4))
811       {
812         int t=(ba[i+k]-start)>>2;
813         int reg=get_reg(regs[t].regmap_entry,r);
814         if(reg>=0) return reg;
815         //reg=get_reg(regs[t+1].regmap_entry,r);
816         //if(reg>=0) return reg;
817       }
818     }
819   }
820   return hr;
821 }
822
823
824 // Allocate every register, preserving source/target regs
825 void alloc_all(struct regstat *cur,int i)
826 {
827   int hr;
828   
829   for(hr=0;hr<HOST_REGS;hr++) {
830     if(hr!=EXCLUDE_REG) {
831       if(((cur->regmap[hr]&63)!=rs1[i])&&((cur->regmap[hr]&63)!=rs2[i])&&
832          ((cur->regmap[hr]&63)!=rt1[i])&&((cur->regmap[hr]&63)!=rt2[i]))
833       {
834         cur->regmap[hr]=-1;
835         cur->dirty&=~(1<<hr);
836       }
837       // Don't need zeros
838       if((cur->regmap[hr]&63)==0)
839       {
840         cur->regmap[hr]=-1;
841         cur->dirty&=~(1<<hr);
842       }
843     }
844   }
845 }
846
847
848 void div64(int64_t dividend,int64_t divisor)
849 {
850   lo=dividend/divisor;
851   hi=dividend%divisor;
852   //printf("TRACE: ddiv %8x%8x %8x%8x\n" ,(int)reg[HIREG],(int)(reg[HIREG]>>32)
853   //                                     ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
854 }
855 void divu64(uint64_t dividend,uint64_t divisor)
856 {
857   lo=dividend/divisor;
858   hi=dividend%divisor;
859   //printf("TRACE: ddivu %8x%8x %8x%8x\n",(int)reg[HIREG],(int)(reg[HIREG]>>32)
860   //                                     ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
861 }
862
863 void mult64(uint64_t m1,uint64_t m2)
864 {
865    unsigned long long int op1, op2, op3, op4;
866    unsigned long long int result1, result2, result3, result4;
867    unsigned long long int temp1, temp2, temp3, temp4;
868    int sign = 0;
869    
870    if (m1 < 0)
871      {
872     op2 = -m1;
873     sign = 1 - sign;
874      }
875    else op2 = m1;
876    if (m2 < 0)
877      {
878     op4 = -m2;
879     sign = 1 - sign;
880      }
881    else op4 = m2;
882    
883    op1 = op2 & 0xFFFFFFFF;
884    op2 = (op2 >> 32) & 0xFFFFFFFF;
885    op3 = op4 & 0xFFFFFFFF;
886    op4 = (op4 >> 32) & 0xFFFFFFFF;
887    
888    temp1 = op1 * op3;
889    temp2 = (temp1 >> 32) + op1 * op4;
890    temp3 = op2 * op3;
891    temp4 = (temp3 >> 32) + op2 * op4;
892    
893    result1 = temp1 & 0xFFFFFFFF;
894    result2 = temp2 + (temp3 & 0xFFFFFFFF);
895    result3 = (result2 >> 32) + temp4;
896    result4 = (result3 >> 32);
897    
898    lo = result1 | (result2 << 32);
899    hi = (result3 & 0xFFFFFFFF) | (result4 << 32);
900    if (sign)
901      {
902     hi = ~hi;
903     if (!lo) hi++;
904     else lo = ~lo + 1;
905      }
906 }
907
908 void multu64(uint64_t m1,uint64_t m2)
909 {
910    unsigned long long int op1, op2, op3, op4;
911    unsigned long long int result1, result2, result3, result4;
912    unsigned long long int temp1, temp2, temp3, temp4;
913    
914    op1 = m1 & 0xFFFFFFFF;
915    op2 = (m1 >> 32) & 0xFFFFFFFF;
916    op3 = m2 & 0xFFFFFFFF;
917    op4 = (m2 >> 32) & 0xFFFFFFFF;
918    
919    temp1 = op1 * op3;
920    temp2 = (temp1 >> 32) + op1 * op4;
921    temp3 = op2 * op3;
922    temp4 = (temp3 >> 32) + op2 * op4;
923    
924    result1 = temp1 & 0xFFFFFFFF;
925    result2 = temp2 + (temp3 & 0xFFFFFFFF);
926    result3 = (result2 >> 32) + temp4;
927    result4 = (result3 >> 32);
928    
929    lo = result1 | (result2 << 32);
930    hi = (result3 & 0xFFFFFFFF) | (result4 << 32);
931    
932   //printf("TRACE: dmultu %8x%8x %8x%8x\n",(int)reg[HIREG],(int)(reg[HIREG]>>32)
933   //                                      ,(int)reg[LOREG],(int)(reg[LOREG]>>32));
934 }
935
936 uint64_t ldl_merge(uint64_t original,uint64_t loaded,u_int bits)
937 {
938   if(bits) {
939     original<<=64-bits;
940     original>>=64-bits;
941     loaded<<=bits;
942     original|=loaded;
943   }
944   else original=loaded;
945   return original;
946 }
947 uint64_t ldr_merge(uint64_t original,uint64_t loaded,u_int bits)
948 {
949   if(bits^56) {
950     original>>=64-(bits^56);
951     original<<=64-(bits^56);
952     loaded>>=bits^56;
953     original|=loaded;
954   }
955   else original=loaded;
956   return original;
957 }
958
959 #ifdef __i386__
960 #include "assem_x86.c"
961 #endif
962 #ifdef __x86_64__
963 #include "assem_x64.c"
964 #endif
965 #ifdef __arm__
966 #include "assem_arm.c"
967 #endif
968
969 // Add virtual address mapping to linked list
970 void ll_add(struct ll_entry **head,int vaddr,void *addr)
971 {
972   struct ll_entry *new_entry;
973   new_entry=malloc(sizeof(struct ll_entry));
974   assert(new_entry!=NULL);
975   new_entry->vaddr=vaddr;
976   new_entry->reg32=0;
977   new_entry->addr=addr;
978   new_entry->next=*head;
979   *head=new_entry;
980 }
981
982 // Add virtual address mapping for 32-bit compiled block
983 void ll_add_32(struct ll_entry **head,int vaddr,u_int reg32,void *addr)
984 {
985   ll_add(head,vaddr,addr);
986 #ifndef FORCE32
987   (*head)->reg32=reg32;
988 #endif
989 }
990
991 // Check if an address is already compiled
992 // but don't return addresses which are about to expire from the cache
993 void *check_addr(u_int vaddr)
994 {
995   u_int *ht_bin=hash_table[((vaddr>>16)^vaddr)&0xFFFF];
996   if(ht_bin[0]==vaddr) {
997     if(((ht_bin[1]-MAX_OUTPUT_BLOCK_SIZE-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
998       if(isclean(ht_bin[1])) return (void *)ht_bin[1];
999   }
1000   if(ht_bin[2]==vaddr) {
1001     if(((ht_bin[3]-MAX_OUTPUT_BLOCK_SIZE-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2)))
1002       if(isclean(ht_bin[3])) return (void *)ht_bin[3];
1003   }
1004   u_int page=get_page(vaddr);
1005   struct ll_entry *head;
1006   head=jump_in[page];
1007   while(head!=NULL) {
1008     if(head->vaddr==vaddr&&head->reg32==0) {
1009       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1010         // Update existing entry with current address
1011         if(ht_bin[0]==vaddr) {
1012           ht_bin[1]=(int)head->addr;
1013           return head->addr;
1014         }
1015         if(ht_bin[2]==vaddr) {
1016           ht_bin[3]=(int)head->addr;
1017           return head->addr;
1018         }
1019         // Insert into hash table with low priority.
1020         // Don't evict existing entries, as they are probably
1021         // addresses that are being accessed frequently.
1022         if(ht_bin[0]==-1) {
1023           ht_bin[1]=(int)head->addr;
1024           ht_bin[0]=vaddr;
1025         }else if(ht_bin[2]==-1) {
1026           ht_bin[3]=(int)head->addr;
1027           ht_bin[2]=vaddr;
1028         }
1029         return head->addr;
1030       }
1031     }
1032     head=head->next;
1033   }
1034   return 0;
1035 }
1036
1037 void remove_hash(int vaddr)
1038 {
1039   //printf("remove hash: %x\n",vaddr);
1040   int *ht_bin=hash_table[(((vaddr)>>16)^vaddr)&0xFFFF];
1041   if(ht_bin[2]==vaddr) {
1042     ht_bin[2]=ht_bin[3]=-1;
1043   }
1044   if(ht_bin[0]==vaddr) {
1045     ht_bin[0]=ht_bin[2];
1046     ht_bin[1]=ht_bin[3];
1047     ht_bin[2]=ht_bin[3]=-1;
1048   }
1049 }
1050
1051 void ll_remove_matching_addrs(struct ll_entry **head,int addr,int shift)
1052 {
1053   struct ll_entry *next;
1054   while(*head) {
1055     if(((u_int)((*head)->addr)>>shift)==(addr>>shift) || 
1056        ((u_int)((*head)->addr-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(addr>>shift))
1057     {
1058       inv_debug("EXP: Remove pointer to %x (%x)\n",(int)(*head)->addr,(*head)->vaddr);
1059       remove_hash((*head)->vaddr);
1060       next=(*head)->next;
1061       free(*head);
1062       *head=next;
1063     }
1064     else
1065     {
1066       head=&((*head)->next);
1067     }
1068   }
1069 }
1070
1071 // Remove all entries from linked list
1072 void ll_clear(struct ll_entry **head)
1073 {
1074   struct ll_entry *cur;
1075   struct ll_entry *next;
1076   if(cur=*head) {
1077     *head=0;
1078     while(cur) {
1079       next=cur->next;
1080       free(cur);
1081       cur=next;
1082     }
1083   }
1084 }
1085
1086 // Dereference the pointers and remove if it matches
1087 void ll_kill_pointers(struct ll_entry *head,int addr,int shift)
1088 {
1089   u_int old_host_addr=0;
1090   while(head) {
1091     int ptr=get_pointer(head->addr);
1092     inv_debug("EXP: Lookup pointer to %x at %x (%x)\n",(int)ptr,(int)head->addr,head->vaddr);
1093     if(((ptr>>shift)==(addr>>shift)) ||
1094        (((ptr-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(addr>>shift)))
1095     {
1096       inv_debug("EXP: Kill pointer at %x (%x)\n",(int)head->addr,head->vaddr);
1097       u_int host_addr=(u_int)kill_pointer(head->addr);
1098
1099       if((host_addr>>12)!=(old_host_addr>>12)) {
1100         #ifdef __arm__
1101         __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
1102         #endif
1103         old_host_addr=host_addr;
1104       }
1105     }
1106     head=head->next;
1107   }
1108   #ifdef __arm__
1109   if (old_host_addr)
1110     __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
1111   #endif
1112 }
1113
1114 // This is called when we write to a compiled block (see do_invstub)
1115 void invalidate_page(u_int page)
1116 {
1117   struct ll_entry *head;
1118   struct ll_entry *next;
1119   u_int old_host_addr=0;
1120   head=jump_in[page];
1121   jump_in[page]=0;
1122   while(head!=NULL) {
1123     inv_debug("INVALIDATE: %x\n",head->vaddr);
1124     remove_hash(head->vaddr);
1125     next=head->next;
1126     free(head);
1127     head=next;
1128   }
1129   head=jump_out[page];
1130   jump_out[page]=0;
1131   while(head!=NULL) {
1132     inv_debug("INVALIDATE: kill pointer to %x (%x)\n",head->vaddr,(int)head->addr);
1133     u_int host_addr=(u_int)kill_pointer(head->addr);
1134
1135     if((host_addr>>12)!=(old_host_addr>>12)) {
1136       #ifdef __arm__
1137       __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
1138       #endif
1139       old_host_addr=host_addr;
1140     }
1141     next=head->next;
1142     free(head);
1143     head=next;
1144   }
1145   #ifdef __arm__
1146   if (old_host_addr)
1147     __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
1148   #endif
1149 }
1150 void invalidate_block(u_int block)
1151 {
1152   u_int page=get_page(block<<12);
1153   u_int vpage=get_vpage(block<<12);
1154   inv_debug("INVALIDATE: %x (%d)\n",block<<12,page);
1155   //inv_debug("invalid_code[block]=%d\n",invalid_code[block]);
1156   u_int first,last;
1157   first=last=page;
1158   struct ll_entry *head;
1159   head=jump_dirty[vpage];
1160   //printf("page=%d vpage=%d\n",page,vpage);
1161   while(head!=NULL) {
1162     u_int start,end;
1163     if(vpage>2047||(head->vaddr>>12)==block) { // Ignore vaddr hash collision
1164       get_bounds((int)head->addr,&start,&end);
1165       //printf("start: %x end: %x\n",start,end);
1166       if(page<2048&&start>=0x80000000&&end<0x80000000+RAM_SIZE) {
1167         if(((start-(u_int)rdram)>>12)<=page&&((end-1-(u_int)rdram)>>12)>=page) {
1168           if((((start-(u_int)rdram)>>12)&2047)<first) first=((start-(u_int)rdram)>>12)&2047;
1169           if((((end-1-(u_int)rdram)>>12)&2047)>last) last=((end-1-(u_int)rdram)>>12)&2047;
1170         }
1171       }
1172 #ifndef DISABLE_TLB
1173       if(page<2048&&(signed int)start>=(signed int)0xC0000000&&(signed int)end>=(signed int)0xC0000000) {
1174         if(((start+memory_map[start>>12]-(u_int)rdram)>>12)<=page&&((end-1+memory_map[(end-1)>>12]-(u_int)rdram)>>12)>=page) {
1175           if((((start+memory_map[start>>12]-(u_int)rdram)>>12)&2047)<first) first=((start+memory_map[start>>12]-(u_int)rdram)>>12)&2047;
1176           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;
1177         }
1178       }
1179 #endif
1180     }
1181     head=head->next;
1182   }
1183   //printf("first=%d last=%d\n",first,last);
1184   invalidate_page(page);
1185   assert(first+5>page); // NB: this assumes MAXBLOCK<=4096 (4 pages)
1186   assert(last<page+5);
1187   // Invalidate the adjacent pages if a block crosses a 4K boundary
1188   while(first<page) {
1189     invalidate_page(first);
1190     first++;
1191   }
1192   for(first=page+1;first<last;first++) {
1193     invalidate_page(first);
1194   }
1195   
1196   // Don't trap writes
1197   invalid_code[block]=1;
1198 #ifndef DISABLE_TLB
1199   // If there is a valid TLB entry for this page, remove write protect
1200   if(tlb_LUT_w[block]) {
1201     assert(tlb_LUT_r[block]==tlb_LUT_w[block]);
1202     // CHECK: Is this right?
1203     memory_map[block]=((tlb_LUT_w[block]&0xFFFFF000)-(block<<12)+(unsigned int)rdram-0x80000000)>>2;
1204     u_int real_block=tlb_LUT_w[block]>>12;
1205     invalid_code[real_block]=1;
1206     if(real_block>=0x80000&&real_block<0x80800) memory_map[real_block]=((u_int)rdram-0x80000000)>>2;
1207   }
1208   else if(block>=0x80000&&block<0x80800) memory_map[block]=((u_int)rdram-0x80000000)>>2;
1209 #endif
1210
1211   #ifdef USE_MINI_HT
1212   memset(mini_ht,-1,sizeof(mini_ht));
1213   #endif
1214 }
1215 void invalidate_addr(u_int addr)
1216 {
1217   invalidate_block(addr>>12);
1218 }
1219 void invalidate_all_pages()
1220 {
1221   u_int page,n;
1222   for(page=0;page<4096;page++)
1223     invalidate_page(page);
1224   for(page=0;page<1048576;page++)
1225     if(!invalid_code[page]) {
1226       restore_candidate[(page&2047)>>3]|=1<<(page&7);
1227       restore_candidate[((page&2047)>>3)+256]|=1<<(page&7);
1228     }
1229   #ifdef __arm__
1230   __clear_cache((void *)BASE_ADDR,(void *)BASE_ADDR+(1<<TARGET_SIZE_2));
1231   #endif
1232   #ifdef USE_MINI_HT
1233   memset(mini_ht,-1,sizeof(mini_ht));
1234   #endif
1235   #ifndef DISABLE_TLB
1236   // TLB
1237   for(page=0;page<0x100000;page++) {
1238     if(tlb_LUT_r[page]) {
1239       memory_map[page]=((tlb_LUT_r[page]&0xFFFFF000)-(page<<12)+(unsigned int)rdram-0x80000000)>>2;
1240       if(!tlb_LUT_w[page]||!invalid_code[page])
1241         memory_map[page]|=0x40000000; // Write protect
1242     }
1243     else memory_map[page]=-1;
1244     if(page==0x80000) page=0xC0000;
1245   }
1246   tlb_hacks();
1247   #endif
1248 }
1249
1250 // Add an entry to jump_out after making a link
1251 void add_link(u_int vaddr,void *src)
1252 {
1253   u_int page=get_page(vaddr);
1254   inv_debug("add_link: %x -> %x (%d)\n",(int)src,vaddr,page);
1255   ll_add(jump_out+page,vaddr,src);
1256   //int ptr=get_pointer(src);
1257   //inv_debug("add_link: Pointer is to %x\n",(int)ptr);
1258 }
1259
1260 // If a code block was found to be unmodified (bit was set in
1261 // restore_candidate) and it remains unmodified (bit is clear
1262 // in invalid_code) then move the entries for that 4K page from
1263 // the dirty list to the clean list.
1264 void clean_blocks(u_int page)
1265 {
1266   struct ll_entry *head;
1267   inv_debug("INV: clean_blocks page=%d\n",page);
1268   head=jump_dirty[page];
1269   while(head!=NULL) {
1270     if(!invalid_code[head->vaddr>>12]) {
1271       // Don't restore blocks which are about to expire from the cache
1272       if((((u_int)head->addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1273         u_int start,end;
1274         if(verify_dirty((int)head->addr)) {
1275           //printf("Possibly Restore %x (%x)\n",head->vaddr, (int)head->addr);
1276           u_int i;
1277           u_int inv=0;
1278           get_bounds((int)head->addr,&start,&end);
1279           if(start-(u_int)rdram<RAM_SIZE) {
1280             for(i=(start-(u_int)rdram+0x80000000)>>12;i<=(end-1-(u_int)rdram+0x80000000)>>12;i++) {
1281               inv|=invalid_code[i];
1282             }
1283           }
1284           if((signed int)head->vaddr>=(signed int)0xC0000000) {
1285             u_int addr = (head->vaddr+(memory_map[head->vaddr>>12]<<2));
1286             //printf("addr=%x start=%x end=%x\n",addr,start,end);
1287             if(addr<start||addr>=end) inv=1;
1288           }
1289           else if((signed int)head->vaddr>=(signed int)0x80000000+RAM_SIZE) {
1290             inv=1;
1291           }
1292           if(!inv) {
1293             void * clean_addr=(void *)get_clean_addr((int)head->addr);
1294             if((((u_int)clean_addr-(u_int)out)<<(32-TARGET_SIZE_2))>0x60000000+(MAX_OUTPUT_BLOCK_SIZE<<(32-TARGET_SIZE_2))) {
1295               u_int ppage=page;
1296 #ifndef DISABLE_TLB
1297               if(page<2048&&tlb_LUT_r[head->vaddr>>12]) ppage=(tlb_LUT_r[head->vaddr>>12]^0x80000000)>>12;
1298 #endif
1299               inv_debug("INV: Restored %x (%x/%x)\n",head->vaddr, (int)head->addr, (int)clean_addr);
1300               //printf("page=%x, addr=%x\n",page,head->vaddr);
1301               //assert(head->vaddr>>12==(page|0x80000));
1302               ll_add_32(jump_in+ppage,head->vaddr,head->reg32,clean_addr);
1303               int *ht_bin=hash_table[((head->vaddr>>16)^head->vaddr)&0xFFFF];
1304               if(!head->reg32) {
1305                 if(ht_bin[0]==head->vaddr) {
1306                   ht_bin[1]=(int)clean_addr; // Replace existing entry
1307                 }
1308                 if(ht_bin[2]==head->vaddr) {
1309                   ht_bin[3]=(int)clean_addr; // Replace existing entry
1310                 }
1311               }
1312             }
1313           }
1314         }
1315       }
1316     }
1317     head=head->next;
1318   }
1319 }
1320
1321
1322 void mov_alloc(struct regstat *current,int i)
1323 {
1324   // Note: Don't need to actually alloc the source registers
1325   if((~current->is32>>rs1[i])&1) {
1326     //alloc_reg64(current,i,rs1[i]);
1327     alloc_reg64(current,i,rt1[i]);
1328     current->is32&=~(1LL<<rt1[i]);
1329   } else {
1330     //alloc_reg(current,i,rs1[i]);
1331     alloc_reg(current,i,rt1[i]);
1332     current->is32|=(1LL<<rt1[i]);
1333   }
1334   clear_const(current,rs1[i]);
1335   clear_const(current,rt1[i]);
1336   dirty_reg(current,rt1[i]);
1337 }
1338
1339 void shiftimm_alloc(struct regstat *current,int i)
1340 {
1341   clear_const(current,rs1[i]);
1342   clear_const(current,rt1[i]);
1343   if(opcode2[i]<=0x3) // SLL/SRL/SRA
1344   {
1345     if(rt1[i]) {
1346       if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1347       else lt1[i]=rs1[i];
1348       alloc_reg(current,i,rt1[i]);
1349       current->is32|=1LL<<rt1[i];
1350       dirty_reg(current,rt1[i]);
1351     }
1352   }
1353   if(opcode2[i]>=0x38&&opcode2[i]<=0x3b) // DSLL/DSRL/DSRA
1354   {
1355     if(rt1[i]) {
1356       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1357       alloc_reg64(current,i,rt1[i]);
1358       current->is32&=~(1LL<<rt1[i]);
1359       dirty_reg(current,rt1[i]);
1360     }
1361   }
1362   if(opcode2[i]==0x3c) // DSLL32
1363   {
1364     if(rt1[i]) {
1365       if(rs1[i]) alloc_reg(current,i,rs1[i]);
1366       alloc_reg64(current,i,rt1[i]);
1367       current->is32&=~(1LL<<rt1[i]);
1368       dirty_reg(current,rt1[i]);
1369     }
1370   }
1371   if(opcode2[i]==0x3e) // DSRL32
1372   {
1373     if(rt1[i]) {
1374       alloc_reg64(current,i,rs1[i]);
1375       if(imm[i]==32) {
1376         alloc_reg64(current,i,rt1[i]);
1377         current->is32&=~(1LL<<rt1[i]);
1378       } else {
1379         alloc_reg(current,i,rt1[i]);
1380         current->is32|=1LL<<rt1[i];
1381       }
1382       dirty_reg(current,rt1[i]);
1383     }
1384   }
1385   if(opcode2[i]==0x3f) // DSRA32
1386   {
1387     if(rt1[i]) {
1388       alloc_reg64(current,i,rs1[i]);
1389       alloc_reg(current,i,rt1[i]);
1390       current->is32|=1LL<<rt1[i];
1391       dirty_reg(current,rt1[i]);
1392     }
1393   }
1394 }
1395
1396 void shift_alloc(struct regstat *current,int i)
1397 {
1398   if(rt1[i]) {
1399     if(opcode2[i]<=0x07) // SLLV/SRLV/SRAV
1400     {
1401       if(rs1[i]) alloc_reg(current,i,rs1[i]);
1402       if(rs2[i]) alloc_reg(current,i,rs2[i]);
1403       alloc_reg(current,i,rt1[i]);
1404       if(rt1[i]==rs2[i]) alloc_reg_temp(current,i,-1);
1405       current->is32|=1LL<<rt1[i];
1406     } else { // DSLLV/DSRLV/DSRAV
1407       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1408       if(rs2[i]) alloc_reg(current,i,rs2[i]);
1409       alloc_reg64(current,i,rt1[i]);
1410       current->is32&=~(1LL<<rt1[i]);
1411       if(opcode2[i]==0x16||opcode2[i]==0x17) // DSRLV and DSRAV need a temporary register
1412         alloc_reg_temp(current,i,-1);
1413     }
1414     clear_const(current,rs1[i]);
1415     clear_const(current,rs2[i]);
1416     clear_const(current,rt1[i]);
1417     dirty_reg(current,rt1[i]);
1418   }
1419 }
1420
1421 void alu_alloc(struct regstat *current,int i)
1422 {
1423   if(opcode2[i]>=0x20&&opcode2[i]<=0x23) { // ADD/ADDU/SUB/SUBU
1424     if(rt1[i]) {
1425       if(rs1[i]&&rs2[i]) {
1426         alloc_reg(current,i,rs1[i]);
1427         alloc_reg(current,i,rs2[i]);
1428       }
1429       else {
1430         if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1431         if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg(current,i,rs2[i]);
1432       }
1433       alloc_reg(current,i,rt1[i]);
1434     }
1435     current->is32|=1LL<<rt1[i];
1436   }
1437   if(opcode2[i]==0x2a||opcode2[i]==0x2b) { // SLT/SLTU
1438     if(rt1[i]) {
1439       if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
1440       {
1441         alloc_reg64(current,i,rs1[i]);
1442         alloc_reg64(current,i,rs2[i]);
1443         alloc_reg(current,i,rt1[i]);
1444       } else {
1445         alloc_reg(current,i,rs1[i]);
1446         alloc_reg(current,i,rs2[i]);
1447         alloc_reg(current,i,rt1[i]);
1448       }
1449     }
1450     current->is32|=1LL<<rt1[i];
1451   }
1452   if(opcode2[i]>=0x24&&opcode2[i]<=0x27) { // AND/OR/XOR/NOR
1453     if(rt1[i]) {
1454       if(rs1[i]&&rs2[i]) {
1455         alloc_reg(current,i,rs1[i]);
1456         alloc_reg(current,i,rs2[i]);
1457       }
1458       else
1459       {
1460         if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1461         if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg(current,i,rs2[i]);
1462       }
1463       alloc_reg(current,i,rt1[i]);
1464       if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
1465       {
1466         if(!((current->uu>>rt1[i])&1)) {
1467           alloc_reg64(current,i,rt1[i]);
1468         }
1469         if(get_reg(current->regmap,rt1[i]|64)>=0) {
1470           if(rs1[i]&&rs2[i]) {
1471             alloc_reg64(current,i,rs1[i]);
1472             alloc_reg64(current,i,rs2[i]);
1473           }
1474           else
1475           {
1476             // Is is really worth it to keep 64-bit values in registers?
1477             #ifdef NATIVE_64BIT
1478             if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg64(current,i,rs1[i]);
1479             if(rs2[i]&&needed_again(rs2[i],i)) alloc_reg64(current,i,rs2[i]);
1480             #endif
1481           }
1482         }
1483         current->is32&=~(1LL<<rt1[i]);
1484       } else {
1485         current->is32|=1LL<<rt1[i];
1486       }
1487     }
1488   }
1489   if(opcode2[i]>=0x2c&&opcode2[i]<=0x2f) { // DADD/DADDU/DSUB/DSUBU
1490     if(rt1[i]) {
1491       if(rs1[i]&&rs2[i]) {
1492         if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1493           alloc_reg64(current,i,rs1[i]);
1494           alloc_reg64(current,i,rs2[i]);
1495           alloc_reg64(current,i,rt1[i]);
1496         } else {
1497           alloc_reg(current,i,rs1[i]);
1498           alloc_reg(current,i,rs2[i]);
1499           alloc_reg(current,i,rt1[i]);
1500         }
1501       }
1502       else {
1503         alloc_reg(current,i,rt1[i]);
1504         if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1505           // DADD used as move, or zeroing
1506           // If we have a 64-bit source, then make the target 64 bits too
1507           if(rs1[i]&&!((current->is32>>rs1[i])&1)) {
1508             if(get_reg(current->regmap,rs1[i])>=0) alloc_reg64(current,i,rs1[i]);
1509             alloc_reg64(current,i,rt1[i]);
1510           } else if(rs2[i]&&!((current->is32>>rs2[i])&1)) {
1511             if(get_reg(current->regmap,rs2[i])>=0) alloc_reg64(current,i,rs2[i]);
1512             alloc_reg64(current,i,rt1[i]);
1513           }
1514           if(opcode2[i]>=0x2e&&rs2[i]) {
1515             // DSUB used as negation - 64-bit result
1516             // If we have a 32-bit register, extend it to 64 bits
1517             if(get_reg(current->regmap,rs2[i])>=0) alloc_reg64(current,i,rs2[i]);
1518             alloc_reg64(current,i,rt1[i]);
1519           }
1520         }
1521       }
1522       if(rs1[i]&&rs2[i]) {
1523         current->is32&=~(1LL<<rt1[i]);
1524       } else if(rs1[i]) {
1525         current->is32&=~(1LL<<rt1[i]);
1526         if((current->is32>>rs1[i])&1)
1527           current->is32|=1LL<<rt1[i];
1528       } else if(rs2[i]) {
1529         current->is32&=~(1LL<<rt1[i]);
1530         if((current->is32>>rs2[i])&1)
1531           current->is32|=1LL<<rt1[i];
1532       } else {
1533         current->is32|=1LL<<rt1[i];
1534       }
1535     }
1536   }
1537   clear_const(current,rs1[i]);
1538   clear_const(current,rs2[i]);
1539   clear_const(current,rt1[i]);
1540   dirty_reg(current,rt1[i]);
1541 }
1542
1543 void imm16_alloc(struct regstat *current,int i)
1544 {
1545   if(rs1[i]&&needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1546   else lt1[i]=rs1[i];
1547   if(rt1[i]) alloc_reg(current,i,rt1[i]);
1548   if(opcode[i]==0x18||opcode[i]==0x19) { // DADDI/DADDIU
1549     current->is32&=~(1LL<<rt1[i]);
1550     if(!((current->uu>>rt1[i])&1)||get_reg(current->regmap,rt1[i]|64)>=0) {
1551       // TODO: Could preserve the 32-bit flag if the immediate is zero
1552       alloc_reg64(current,i,rt1[i]);
1553       alloc_reg64(current,i,rs1[i]);
1554     }
1555     clear_const(current,rs1[i]);
1556     clear_const(current,rt1[i]);
1557   }
1558   else if(opcode[i]==0x0a||opcode[i]==0x0b) { // SLTI/SLTIU
1559     if((~current->is32>>rs1[i])&1) alloc_reg64(current,i,rs1[i]);
1560     current->is32|=1LL<<rt1[i];
1561     clear_const(current,rs1[i]);
1562     clear_const(current,rt1[i]);
1563   }
1564   else if(opcode[i]>=0x0c&&opcode[i]<=0x0e) { // ANDI/ORI/XORI
1565     if(((~current->is32>>rs1[i])&1)&&opcode[i]>0x0c) {
1566       if(rs1[i]!=rt1[i]) {
1567         if(needed_again(rs1[i],i)) alloc_reg64(current,i,rs1[i]);
1568         alloc_reg64(current,i,rt1[i]);
1569         current->is32&=~(1LL<<rt1[i]);
1570       }
1571     }
1572     else current->is32|=1LL<<rt1[i]; // ANDI clears upper bits
1573     if(is_const(current,rs1[i])) {
1574       int v=get_const(current,rs1[i]);
1575       if(opcode[i]==0x0c) set_const(current,rt1[i],v&imm[i]);
1576       if(opcode[i]==0x0d) set_const(current,rt1[i],v|imm[i]);
1577       if(opcode[i]==0x0e) set_const(current,rt1[i],v^imm[i]);
1578     }
1579     else clear_const(current,rt1[i]);
1580   }
1581   else if(opcode[i]==0x08||opcode[i]==0x09) { // ADDI/ADDIU
1582     if(is_const(current,rs1[i])) {
1583       int v=get_const(current,rs1[i]);
1584       set_const(current,rt1[i],v+imm[i]);
1585     }
1586     else clear_const(current,rt1[i]);
1587     current->is32|=1LL<<rt1[i];
1588   }
1589   else {
1590     set_const(current,rt1[i],((long long)((short)imm[i]))<<16); // LUI
1591     current->is32|=1LL<<rt1[i];
1592   }
1593   dirty_reg(current,rt1[i]);
1594 }
1595
1596 void load_alloc(struct regstat *current,int i)
1597 {
1598   clear_const(current,rt1[i]);
1599   //if(rs1[i]!=rt1[i]&&needed_again(rs1[i],i)) clear_const(current,rs1[i]); // Does this help or hurt?
1600   if(!rs1[i]) current->u&=~1LL; // Allow allocating r0 if it's the source register
1601   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1602   if(rt1[i]) {
1603     alloc_reg(current,i,rt1[i]);
1604     if(opcode[i]==0x27||opcode[i]==0x37) // LWU/LD
1605     {
1606       current->is32&=~(1LL<<rt1[i]);
1607       alloc_reg64(current,i,rt1[i]);
1608     }
1609     else if(opcode[i]==0x1A||opcode[i]==0x1B) // LDL/LDR
1610     {
1611       current->is32&=~(1LL<<rt1[i]);
1612       alloc_reg64(current,i,rt1[i]);
1613       alloc_all(current,i);
1614       alloc_reg64(current,i,FTEMP);
1615     }
1616     else current->is32|=1LL<<rt1[i];
1617     dirty_reg(current,rt1[i]);
1618     // If using TLB, need a register for pointer to the mapping table
1619     if(using_tlb) alloc_reg(current,i,TLREG);
1620     // LWL/LWR need a temporary register for the old value
1621     if(opcode[i]==0x22||opcode[i]==0x26)
1622     {
1623       alloc_reg(current,i,FTEMP);
1624       alloc_reg_temp(current,i,-1);
1625     }
1626   }
1627   else
1628   {
1629     // Load to r0 (dummy load)
1630     // but we still need a register to calculate the address
1631     alloc_reg_temp(current,i,-1);
1632   }
1633 }
1634
1635 void store_alloc(struct regstat *current,int i)
1636 {
1637   clear_const(current,rs2[i]);
1638   if(!(rs2[i])) current->u&=~1LL; // Allow allocating r0 if necessary
1639   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1640   alloc_reg(current,i,rs2[i]);
1641   if(opcode[i]==0x2c||opcode[i]==0x2d||opcode[i]==0x3f) { // 64-bit SDL/SDR/SD
1642     alloc_reg64(current,i,rs2[i]);
1643     if(rs2[i]) alloc_reg(current,i,FTEMP);
1644   }
1645   // If using TLB, need a register for pointer to the mapping table
1646   if(using_tlb) alloc_reg(current,i,TLREG);
1647   #if defined(HOST_IMM8)
1648   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1649   else alloc_reg(current,i,INVCP);
1650   #endif
1651   if(opcode[i]==0x2a||opcode[i]==0x2e||opcode[i]==0x2c||opcode[i]==0x2d) { // SWL/SWL/SDL/SDR
1652     alloc_reg(current,i,FTEMP);
1653   }
1654   // We need a temporary register for address generation
1655   alloc_reg_temp(current,i,-1);
1656 }
1657
1658 void c1ls_alloc(struct regstat *current,int i)
1659 {
1660   //clear_const(current,rs1[i]); // FIXME
1661   clear_const(current,rt1[i]);
1662   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1663   alloc_reg(current,i,CSREG); // Status
1664   alloc_reg(current,i,FTEMP);
1665   if(opcode[i]==0x35||opcode[i]==0x3d) { // 64-bit LDC1/SDC1
1666     alloc_reg64(current,i,FTEMP);
1667   }
1668   // If using TLB, need a register for pointer to the mapping table
1669   if(using_tlb) alloc_reg(current,i,TLREG);
1670   #if defined(HOST_IMM8)
1671   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1672   else if((opcode[i]&0x3b)==0x39) // SWC1/SDC1
1673     alloc_reg(current,i,INVCP);
1674   #endif
1675   // We need a temporary register for address generation
1676   alloc_reg_temp(current,i,-1);
1677 }
1678
1679 void c2ls_alloc(struct regstat *current,int i)
1680 {
1681   clear_const(current,rt1[i]);
1682   if(needed_again(rs1[i],i)) alloc_reg(current,i,rs1[i]);
1683   alloc_reg(current,i,FTEMP);
1684   // If using TLB, need a register for pointer to the mapping table
1685   if(using_tlb) alloc_reg(current,i,TLREG);
1686   #if defined(HOST_IMM8)
1687   // On CPUs without 32-bit immediates we need a pointer to invalid_code
1688   else if((opcode[i]&0x3b)==0x3a) // SWC2/SDC2
1689     alloc_reg(current,i,INVCP);
1690   #endif
1691   // We need a temporary register for address generation
1692   alloc_reg_temp(current,i,-1);
1693 }
1694
1695 #ifndef multdiv_alloc
1696 void multdiv_alloc(struct regstat *current,int i)
1697 {
1698   //  case 0x18: MULT
1699   //  case 0x19: MULTU
1700   //  case 0x1A: DIV
1701   //  case 0x1B: DIVU
1702   //  case 0x1C: DMULT
1703   //  case 0x1D: DMULTU
1704   //  case 0x1E: DDIV
1705   //  case 0x1F: DDIVU
1706   clear_const(current,rs1[i]);
1707   clear_const(current,rs2[i]);
1708   if(rs1[i]&&rs2[i])
1709   {
1710     if((opcode2[i]&4)==0) // 32-bit
1711     {
1712       current->u&=~(1LL<<HIREG);
1713       current->u&=~(1LL<<LOREG);
1714       alloc_reg(current,i,HIREG);
1715       alloc_reg(current,i,LOREG);
1716       alloc_reg(current,i,rs1[i]);
1717       alloc_reg(current,i,rs2[i]);
1718       current->is32|=1LL<<HIREG;
1719       current->is32|=1LL<<LOREG;
1720       dirty_reg(current,HIREG);
1721       dirty_reg(current,LOREG);
1722     }
1723     else // 64-bit
1724     {
1725       current->u&=~(1LL<<HIREG);
1726       current->u&=~(1LL<<LOREG);
1727       current->uu&=~(1LL<<HIREG);
1728       current->uu&=~(1LL<<LOREG);
1729       alloc_reg64(current,i,HIREG);
1730       //if(HOST_REGS>10) alloc_reg64(current,i,LOREG);
1731       alloc_reg64(current,i,rs1[i]);
1732       alloc_reg64(current,i,rs2[i]);
1733       alloc_all(current,i);
1734       current->is32&=~(1LL<<HIREG);
1735       current->is32&=~(1LL<<LOREG);
1736       dirty_reg(current,HIREG);
1737       dirty_reg(current,LOREG);
1738     }
1739   }
1740   else
1741   {
1742     // Multiply by zero is zero.
1743     // MIPS does not have a divide by zero exception.
1744     // The result is undefined, we return zero.
1745     alloc_reg(current,i,HIREG);
1746     alloc_reg(current,i,LOREG);
1747     current->is32|=1LL<<HIREG;
1748     current->is32|=1LL<<LOREG;
1749     dirty_reg(current,HIREG);
1750     dirty_reg(current,LOREG);
1751   }
1752 }
1753 #endif
1754
1755 void cop0_alloc(struct regstat *current,int i)
1756 {
1757   if(opcode2[i]==0) // MFC0
1758   {
1759     if(rt1[i]) {
1760       clear_const(current,rt1[i]);
1761       alloc_all(current,i);
1762       alloc_reg(current,i,rt1[i]);
1763       current->is32|=1LL<<rt1[i];
1764       dirty_reg(current,rt1[i]);
1765     }
1766   }
1767   else if(opcode2[i]==4) // MTC0
1768   {
1769     if(rs1[i]){
1770       clear_const(current,rs1[i]);
1771       alloc_reg(current,i,rs1[i]);
1772       alloc_all(current,i);
1773     }
1774     else {
1775       alloc_all(current,i); // FIXME: Keep r0
1776       current->u&=~1LL;
1777       alloc_reg(current,i,0);
1778     }
1779   }
1780   else
1781   {
1782     // TLBR/TLBWI/TLBWR/TLBP/ERET
1783     assert(opcode2[i]==0x10);
1784     alloc_all(current,i);
1785   }
1786 }
1787
1788 void cop1_alloc(struct regstat *current,int i)
1789 {
1790   alloc_reg(current,i,CSREG); // Load status
1791   if(opcode2[i]<3) // MFC1/DMFC1/CFC1
1792   {
1793     if(rt1[i]){
1794       clear_const(current,rt1[i]);
1795       if(opcode2[i]==1) {
1796         alloc_reg64(current,i,rt1[i]); // DMFC1
1797         current->is32&=~(1LL<<rt1[i]);
1798       }else{
1799         alloc_reg(current,i,rt1[i]); // MFC1/CFC1
1800         current->is32|=1LL<<rt1[i];
1801       }
1802       dirty_reg(current,rt1[i]);
1803     }
1804     alloc_reg_temp(current,i,-1);
1805   }
1806   else if(opcode2[i]>3) // MTC1/DMTC1/CTC1
1807   {
1808     if(rs1[i]){
1809       clear_const(current,rs1[i]);
1810       if(opcode2[i]==5)
1811         alloc_reg64(current,i,rs1[i]); // DMTC1
1812       else
1813         alloc_reg(current,i,rs1[i]); // MTC1/CTC1
1814       alloc_reg_temp(current,i,-1);
1815     }
1816     else {
1817       current->u&=~1LL;
1818       alloc_reg(current,i,0);
1819       alloc_reg_temp(current,i,-1);
1820     }
1821   }
1822 }
1823 void fconv_alloc(struct regstat *current,int i)
1824 {
1825   alloc_reg(current,i,CSREG); // Load status
1826   alloc_reg_temp(current,i,-1);
1827 }
1828 void float_alloc(struct regstat *current,int i)
1829 {
1830   alloc_reg(current,i,CSREG); // Load status
1831   alloc_reg_temp(current,i,-1);
1832 }
1833 void c2op_alloc(struct regstat *current,int i)
1834 {
1835   alloc_reg_temp(current,i,-1);
1836 }
1837 void fcomp_alloc(struct regstat *current,int i)
1838 {
1839   alloc_reg(current,i,CSREG); // Load status
1840   alloc_reg(current,i,FSREG); // Load flags
1841   dirty_reg(current,FSREG); // Flag will be modified
1842   alloc_reg_temp(current,i,-1);
1843 }
1844
1845 void syscall_alloc(struct regstat *current,int i)
1846 {
1847   alloc_cc(current,i);
1848   dirty_reg(current,CCREG);
1849   alloc_all(current,i);
1850   current->isconst=0;
1851 }
1852
1853 void delayslot_alloc(struct regstat *current,int i)
1854 {
1855   switch(itype[i]) {
1856     case UJUMP:
1857     case CJUMP:
1858     case SJUMP:
1859     case RJUMP:
1860     case FJUMP:
1861     case SYSCALL:
1862     case HLECALL:
1863     case SPAN:
1864       assem_debug("jump in the delay slot.  this shouldn't happen.\n");//exit(1);
1865       printf("Disabled speculative precompilation\n");
1866       stop_after_jal=1;
1867       break;
1868     case IMM16:
1869       imm16_alloc(current,i);
1870       break;
1871     case LOAD:
1872     case LOADLR:
1873       load_alloc(current,i);
1874       break;
1875     case STORE:
1876     case STORELR:
1877       store_alloc(current,i);
1878       break;
1879     case ALU:
1880       alu_alloc(current,i);
1881       break;
1882     case SHIFT:
1883       shift_alloc(current,i);
1884       break;
1885     case MULTDIV:
1886       multdiv_alloc(current,i);
1887       break;
1888     case SHIFTIMM:
1889       shiftimm_alloc(current,i);
1890       break;
1891     case MOV:
1892       mov_alloc(current,i);
1893       break;
1894     case COP0:
1895       cop0_alloc(current,i);
1896       break;
1897     case COP1:
1898     case COP2:
1899       cop1_alloc(current,i);
1900       break;
1901     case C1LS:
1902       c1ls_alloc(current,i);
1903       break;
1904     case C2LS:
1905       c2ls_alloc(current,i);
1906       break;
1907     case FCONV:
1908       fconv_alloc(current,i);
1909       break;
1910     case FLOAT:
1911       float_alloc(current,i);
1912       break;
1913     case FCOMP:
1914       fcomp_alloc(current,i);
1915       break;
1916     case C2OP:
1917       c2op_alloc(current,i);
1918       break;
1919   }
1920 }
1921
1922 // Special case where a branch and delay slot span two pages in virtual memory
1923 static void pagespan_alloc(struct regstat *current,int i)
1924 {
1925   current->isconst=0;
1926   current->wasconst=0;
1927   regs[i].wasconst=0;
1928   alloc_all(current,i);
1929   alloc_cc(current,i);
1930   dirty_reg(current,CCREG);
1931   if(opcode[i]==3) // JAL
1932   {
1933     alloc_reg(current,i,31);
1934     dirty_reg(current,31);
1935   }
1936   if(opcode[i]==0&&(opcode2[i]&0x3E)==8) // JR/JALR
1937   {
1938     alloc_reg(current,i,rs1[i]);
1939     if (rt1[i]!=0) {
1940       alloc_reg(current,i,rt1[i]);
1941       dirty_reg(current,rt1[i]);
1942     }
1943   }
1944   if((opcode[i]&0x2E)==4) // BEQ/BNE/BEQL/BNEL
1945   {
1946     if(rs1[i]) alloc_reg(current,i,rs1[i]);
1947     if(rs2[i]) alloc_reg(current,i,rs2[i]);
1948     if(!((current->is32>>rs1[i])&(current->is32>>rs2[i])&1))
1949     {
1950       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1951       if(rs2[i]) alloc_reg64(current,i,rs2[i]);
1952     }
1953   }
1954   else
1955   if((opcode[i]&0x2E)==6) // BLEZ/BGTZ/BLEZL/BGTZL
1956   {
1957     if(rs1[i]) alloc_reg(current,i,rs1[i]);
1958     if(!((current->is32>>rs1[i])&1))
1959     {
1960       if(rs1[i]) alloc_reg64(current,i,rs1[i]);
1961     }
1962   }
1963   else
1964   if(opcode[i]==0x11) // BC1
1965   {
1966     alloc_reg(current,i,FSREG);
1967     alloc_reg(current,i,CSREG);
1968   }
1969   //else ...
1970 }
1971
1972 add_stub(int type,int addr,int retaddr,int a,int b,int c,int d,int e)
1973 {
1974   stubs[stubcount][0]=type;
1975   stubs[stubcount][1]=addr;
1976   stubs[stubcount][2]=retaddr;
1977   stubs[stubcount][3]=a;
1978   stubs[stubcount][4]=b;
1979   stubs[stubcount][5]=c;
1980   stubs[stubcount][6]=d;
1981   stubs[stubcount][7]=e;
1982   stubcount++;
1983 }
1984
1985 // Write out a single register
1986 void wb_register(signed char r,signed char regmap[],uint64_t dirty,uint64_t is32)
1987 {
1988   int hr;
1989   for(hr=0;hr<HOST_REGS;hr++) {
1990     if(hr!=EXCLUDE_REG) {
1991       if((regmap[hr]&63)==r) {
1992         if((dirty>>hr)&1) {
1993           if(regmap[hr]<64) {
1994             emit_storereg(r,hr);
1995 #ifndef FORCE32
1996             if((is32>>regmap[hr])&1) {
1997               emit_sarimm(hr,31,hr);
1998               emit_storereg(r|64,hr);
1999             }
2000 #endif
2001           }else{
2002             emit_storereg(r|64,hr);
2003           }
2004         }
2005       }
2006     }
2007   }
2008 }
2009
2010 int mchecksum()
2011 {
2012   //if(!tracedebug) return 0;
2013   int i;
2014   int sum=0;
2015   for(i=0;i<2097152;i++) {
2016     unsigned int temp=sum;
2017     sum<<=1;
2018     sum|=(~temp)>>31;
2019     sum^=((u_int *)rdram)[i];
2020   }
2021   return sum;
2022 }
2023 int rchecksum()
2024 {
2025   int i;
2026   int sum=0;
2027   for(i=0;i<64;i++)
2028     sum^=((u_int *)reg)[i];
2029   return sum;
2030 }
2031 void rlist()
2032 {
2033   int i;
2034   printf("TRACE: ");
2035   for(i=0;i<32;i++)
2036     printf("r%d:%8x%8x ",i,((int *)(reg+i))[1],((int *)(reg+i))[0]);
2037   printf("\n");
2038 #ifndef DISABLE_COP1
2039   printf("TRACE: ");
2040   for(i=0;i<32;i++)
2041     printf("f%d:%8x%8x ",i,((int*)reg_cop1_simple[i])[1],*((int*)reg_cop1_simple[i]));
2042   printf("\n");
2043 #endif
2044 }
2045
2046 void enabletrace()
2047 {
2048   tracedebug=1;
2049 }
2050
2051 void memdebug(int i)
2052 {
2053   //printf("TRACE: count=%d next=%d (checksum %x) lo=%8x%8x\n",Count,next_interupt,mchecksum(),(int)(reg[LOREG]>>32),(int)reg[LOREG]);
2054   //printf("TRACE: count=%d next=%d (rchecksum %x)\n",Count,next_interupt,rchecksum());
2055   //rlist();
2056   //if(tracedebug) {
2057   //if(Count>=-2084597794) {
2058   if((signed int)Count>=-2084597794&&(signed int)Count<0) {
2059   //if(0) {
2060     printf("TRACE: count=%d next=%d (checksum %x)\n",Count,next_interupt,mchecksum());
2061     //printf("TRACE: count=%d next=%d (checksum %x) Status=%x\n",Count,next_interupt,mchecksum(),Status);
2062     //printf("TRACE: count=%d next=%d (checksum %x) hi=%8x%8x\n",Count,next_interupt,mchecksum(),(int)(reg[HIREG]>>32),(int)reg[HIREG]);
2063     rlist();
2064     #ifdef __i386__
2065     printf("TRACE: %x\n",(&i)[-1]);
2066     #endif
2067     #ifdef __arm__
2068     int j;
2069     printf("TRACE: %x \n",(&j)[10]);
2070     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]);
2071     #endif
2072     //fflush(stdout);
2073   }
2074   //printf("TRACE: %x\n",(&i)[-1]);
2075 }
2076
2077 void tlb_debug(u_int cause, u_int addr, u_int iaddr)
2078 {
2079   printf("TLB Exception: instruction=%x addr=%x cause=%x\n",iaddr, addr, cause);
2080 }
2081
2082 void alu_assemble(int i,struct regstat *i_regs)
2083 {
2084   if(opcode2[i]>=0x20&&opcode2[i]<=0x23) { // ADD/ADDU/SUB/SUBU
2085     if(rt1[i]) {
2086       signed char s1,s2,t;
2087       t=get_reg(i_regs->regmap,rt1[i]);
2088       if(t>=0) {
2089         s1=get_reg(i_regs->regmap,rs1[i]);
2090         s2=get_reg(i_regs->regmap,rs2[i]);
2091         if(rs1[i]&&rs2[i]) {
2092           assert(s1>=0);
2093           assert(s2>=0);
2094           if(opcode2[i]&2) emit_sub(s1,s2,t);
2095           else emit_add(s1,s2,t);
2096         }
2097         else if(rs1[i]) {
2098           if(s1>=0) emit_mov(s1,t);
2099           else emit_loadreg(rs1[i],t);
2100         }
2101         else if(rs2[i]) {
2102           if(s2>=0) {
2103             if(opcode2[i]&2) emit_neg(s2,t);
2104             else emit_mov(s2,t);
2105           }
2106           else {
2107             emit_loadreg(rs2[i],t);
2108             if(opcode2[i]&2) emit_neg(t,t);
2109           }
2110         }
2111         else emit_zeroreg(t);
2112       }
2113     }
2114   }
2115   if(opcode2[i]>=0x2c&&opcode2[i]<=0x2f) { // DADD/DADDU/DSUB/DSUBU
2116     if(rt1[i]) {
2117       signed char s1l,s2l,s1h,s2h,tl,th;
2118       tl=get_reg(i_regs->regmap,rt1[i]);
2119       th=get_reg(i_regs->regmap,rt1[i]|64);
2120       if(tl>=0) {
2121         s1l=get_reg(i_regs->regmap,rs1[i]);
2122         s2l=get_reg(i_regs->regmap,rs2[i]);
2123         s1h=get_reg(i_regs->regmap,rs1[i]|64);
2124         s2h=get_reg(i_regs->regmap,rs2[i]|64);
2125         if(rs1[i]&&rs2[i]) {
2126           assert(s1l>=0);
2127           assert(s2l>=0);
2128           if(opcode2[i]&2) emit_subs(s1l,s2l,tl);
2129           else emit_adds(s1l,s2l,tl);
2130           if(th>=0) {
2131             #ifdef INVERTED_CARRY
2132             if(opcode2[i]&2) {if(s1h!=th) emit_mov(s1h,th);emit_sbb(th,s2h);}
2133             #else
2134             if(opcode2[i]&2) emit_sbc(s1h,s2h,th);
2135             #endif
2136             else emit_add(s1h,s2h,th);
2137           }
2138         }
2139         else if(rs1[i]) {
2140           if(s1l>=0) emit_mov(s1l,tl);
2141           else emit_loadreg(rs1[i],tl);
2142           if(th>=0) {
2143             if(s1h>=0) emit_mov(s1h,th);
2144             else emit_loadreg(rs1[i]|64,th);
2145           }
2146         }
2147         else if(rs2[i]) {
2148           if(s2l>=0) {
2149             if(opcode2[i]&2) emit_negs(s2l,tl);
2150             else emit_mov(s2l,tl);
2151           }
2152           else {
2153             emit_loadreg(rs2[i],tl);
2154             if(opcode2[i]&2) emit_negs(tl,tl);
2155           }
2156           if(th>=0) {
2157             #ifdef INVERTED_CARRY
2158             if(s2h>=0) emit_mov(s2h,th);
2159             else emit_loadreg(rs2[i]|64,th);
2160             if(opcode2[i]&2) {
2161               emit_adcimm(-1,th); // x86 has inverted carry flag
2162               emit_not(th,th);
2163             }
2164             #else
2165             if(opcode2[i]&2) {
2166               if(s2h>=0) emit_rscimm(s2h,0,th);
2167               else {
2168                 emit_loadreg(rs2[i]|64,th);
2169                 emit_rscimm(th,0,th);
2170               }
2171             }else{
2172               if(s2h>=0) emit_mov(s2h,th);
2173               else emit_loadreg(rs2[i]|64,th);
2174             }
2175             #endif
2176           }
2177         }
2178         else {
2179           emit_zeroreg(tl);
2180           if(th>=0) emit_zeroreg(th);
2181         }
2182       }
2183     }
2184   }
2185   if(opcode2[i]==0x2a||opcode2[i]==0x2b) { // SLT/SLTU
2186     if(rt1[i]) {
2187       signed char s1l,s1h,s2l,s2h,t;
2188       if(!((i_regs->was32>>rs1[i])&(i_regs->was32>>rs2[i])&1))
2189       {
2190         t=get_reg(i_regs->regmap,rt1[i]);
2191         //assert(t>=0);
2192         if(t>=0) {
2193           s1l=get_reg(i_regs->regmap,rs1[i]);
2194           s1h=get_reg(i_regs->regmap,rs1[i]|64);
2195           s2l=get_reg(i_regs->regmap,rs2[i]);
2196           s2h=get_reg(i_regs->regmap,rs2[i]|64);
2197           if(rs2[i]==0) // rx<r0
2198           {
2199             assert(s1h>=0);
2200             if(opcode2[i]==0x2a) // SLT
2201               emit_shrimm(s1h,31,t);
2202             else // SLTU (unsigned can not be less than zero)
2203               emit_zeroreg(t);
2204           }
2205           else if(rs1[i]==0) // r0<rx
2206           {
2207             assert(s2h>=0);
2208             if(opcode2[i]==0x2a) // SLT
2209               emit_set_gz64_32(s2h,s2l,t);
2210             else // SLTU (set if not zero)
2211               emit_set_nz64_32(s2h,s2l,t);
2212           }
2213           else {
2214             assert(s1l>=0);assert(s1h>=0);
2215             assert(s2l>=0);assert(s2h>=0);
2216             if(opcode2[i]==0x2a) // SLT
2217               emit_set_if_less64_32(s1h,s1l,s2h,s2l,t);
2218             else // SLTU
2219               emit_set_if_carry64_32(s1h,s1l,s2h,s2l,t);
2220           }
2221         }
2222       } else {
2223         t=get_reg(i_regs->regmap,rt1[i]);
2224         //assert(t>=0);
2225         if(t>=0) {
2226           s1l=get_reg(i_regs->regmap,rs1[i]);
2227           s2l=get_reg(i_regs->regmap,rs2[i]);
2228           if(rs2[i]==0) // rx<r0
2229           {
2230             assert(s1l>=0);
2231             if(opcode2[i]==0x2a) // SLT
2232               emit_shrimm(s1l,31,t);
2233             else // SLTU (unsigned can not be less than zero)
2234               emit_zeroreg(t);
2235           }
2236           else if(rs1[i]==0) // r0<rx
2237           {
2238             assert(s2l>=0);
2239             if(opcode2[i]==0x2a) // SLT
2240               emit_set_gz32(s2l,t);
2241             else // SLTU (set if not zero)
2242               emit_set_nz32(s2l,t);
2243           }
2244           else{
2245             assert(s1l>=0);assert(s2l>=0);
2246             if(opcode2[i]==0x2a) // SLT
2247               emit_set_if_less32(s1l,s2l,t);
2248             else // SLTU
2249               emit_set_if_carry32(s1l,s2l,t);
2250           }
2251         }
2252       }
2253     }
2254   }
2255   if(opcode2[i]>=0x24&&opcode2[i]<=0x27) { // AND/OR/XOR/NOR
2256     if(rt1[i]) {
2257       signed char s1l,s1h,s2l,s2h,th,tl;
2258       tl=get_reg(i_regs->regmap,rt1[i]);
2259       th=get_reg(i_regs->regmap,rt1[i]|64);
2260       if(!((i_regs->was32>>rs1[i])&(i_regs->was32>>rs2[i])&1)&&th>=0)
2261       {
2262         assert(tl>=0);
2263         if(tl>=0) {
2264           s1l=get_reg(i_regs->regmap,rs1[i]);
2265           s1h=get_reg(i_regs->regmap,rs1[i]|64);
2266           s2l=get_reg(i_regs->regmap,rs2[i]);
2267           s2h=get_reg(i_regs->regmap,rs2[i]|64);
2268           if(rs1[i]&&rs2[i]) {
2269             assert(s1l>=0);assert(s1h>=0);
2270             assert(s2l>=0);assert(s2h>=0);
2271             if(opcode2[i]==0x24) { // AND
2272               emit_and(s1l,s2l,tl);
2273               emit_and(s1h,s2h,th);
2274             } else
2275             if(opcode2[i]==0x25) { // OR
2276               emit_or(s1l,s2l,tl);
2277               emit_or(s1h,s2h,th);
2278             } else
2279             if(opcode2[i]==0x26) { // XOR
2280               emit_xor(s1l,s2l,tl);
2281               emit_xor(s1h,s2h,th);
2282             } else
2283             if(opcode2[i]==0x27) { // NOR
2284               emit_or(s1l,s2l,tl);
2285               emit_or(s1h,s2h,th);
2286               emit_not(tl,tl);
2287               emit_not(th,th);
2288             }
2289           }
2290           else
2291           {
2292             if(opcode2[i]==0x24) { // AND
2293               emit_zeroreg(tl);
2294               emit_zeroreg(th);
2295             } else
2296             if(opcode2[i]==0x25||opcode2[i]==0x26) { // OR/XOR
2297               if(rs1[i]){
2298                 if(s1l>=0) emit_mov(s1l,tl);
2299                 else emit_loadreg(rs1[i],tl);
2300                 if(s1h>=0) emit_mov(s1h,th);
2301                 else emit_loadreg(rs1[i]|64,th);
2302               }
2303               else
2304               if(rs2[i]){
2305                 if(s2l>=0) emit_mov(s2l,tl);
2306                 else emit_loadreg(rs2[i],tl);
2307                 if(s2h>=0) emit_mov(s2h,th);
2308                 else emit_loadreg(rs2[i]|64,th);
2309               }
2310               else{
2311                 emit_zeroreg(tl);
2312                 emit_zeroreg(th);
2313               }
2314             } else
2315             if(opcode2[i]==0x27) { // NOR
2316               if(rs1[i]){
2317                 if(s1l>=0) emit_not(s1l,tl);
2318                 else{
2319                   emit_loadreg(rs1[i],tl);
2320                   emit_not(tl,tl);
2321                 }
2322                 if(s1h>=0) emit_not(s1h,th);
2323                 else{
2324                   emit_loadreg(rs1[i]|64,th);
2325                   emit_not(th,th);
2326                 }
2327               }
2328               else
2329               if(rs2[i]){
2330                 if(s2l>=0) emit_not(s2l,tl);
2331                 else{
2332                   emit_loadreg(rs2[i],tl);
2333                   emit_not(tl,tl);
2334                 }
2335                 if(s2h>=0) emit_not(s2h,th);
2336                 else{
2337                   emit_loadreg(rs2[i]|64,th);
2338                   emit_not(th,th);
2339                 }
2340               }
2341               else {
2342                 emit_movimm(-1,tl);
2343                 emit_movimm(-1,th);
2344               }
2345             }
2346           }
2347         }
2348       }
2349       else
2350       {
2351         // 32 bit
2352         if(tl>=0) {
2353           s1l=get_reg(i_regs->regmap,rs1[i]);
2354           s2l=get_reg(i_regs->regmap,rs2[i]);
2355           if(rs1[i]&&rs2[i]) {
2356             assert(s1l>=0);
2357             assert(s2l>=0);
2358             if(opcode2[i]==0x24) { // AND
2359               emit_and(s1l,s2l,tl);
2360             } else
2361             if(opcode2[i]==0x25) { // OR
2362               emit_or(s1l,s2l,tl);
2363             } else
2364             if(opcode2[i]==0x26) { // XOR
2365               emit_xor(s1l,s2l,tl);
2366             } else
2367             if(opcode2[i]==0x27) { // NOR
2368               emit_or(s1l,s2l,tl);
2369               emit_not(tl,tl);
2370             }
2371           }
2372           else
2373           {
2374             if(opcode2[i]==0x24) { // AND
2375               emit_zeroreg(tl);
2376             } else
2377             if(opcode2[i]==0x25||opcode2[i]==0x26) { // OR/XOR
2378               if(rs1[i]){
2379                 if(s1l>=0) emit_mov(s1l,tl);
2380                 else emit_loadreg(rs1[i],tl); // CHECK: regmap_entry?
2381               }
2382               else
2383               if(rs2[i]){
2384                 if(s2l>=0) emit_mov(s2l,tl);
2385                 else emit_loadreg(rs2[i],tl); // CHECK: regmap_entry?
2386               }
2387               else emit_zeroreg(tl);
2388             } else
2389             if(opcode2[i]==0x27) { // NOR
2390               if(rs1[i]){
2391                 if(s1l>=0) emit_not(s1l,tl);
2392                 else {
2393                   emit_loadreg(rs1[i],tl);
2394                   emit_not(tl,tl);
2395                 }
2396               }
2397               else
2398               if(rs2[i]){
2399                 if(s2l>=0) emit_not(s2l,tl);
2400                 else {
2401                   emit_loadreg(rs2[i],tl);
2402                   emit_not(tl,tl);
2403                 }
2404               }
2405               else emit_movimm(-1,tl);
2406             }
2407           }
2408         }
2409       }
2410     }
2411   }
2412 }
2413
2414 void imm16_assemble(int i,struct regstat *i_regs)
2415 {
2416   if (opcode[i]==0x0f) { // LUI
2417     if(rt1[i]) {
2418       signed char t;
2419       t=get_reg(i_regs->regmap,rt1[i]);
2420       //assert(t>=0);
2421       if(t>=0) {
2422         if(!((i_regs->isconst>>t)&1))
2423           emit_movimm(imm[i]<<16,t);
2424       }
2425     }
2426   }
2427   if(opcode[i]==0x08||opcode[i]==0x09) { // ADDI/ADDIU
2428     if(rt1[i]) {
2429       signed char s,t;
2430       t=get_reg(i_regs->regmap,rt1[i]);
2431       s=get_reg(i_regs->regmap,rs1[i]);
2432       if(rs1[i]) {
2433         //assert(t>=0);
2434         //assert(s>=0);
2435         if(t>=0) {
2436           if(!((i_regs->isconst>>t)&1)) {
2437             if(s<0) {
2438               if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2439               emit_addimm(t,imm[i],t);
2440             }else{
2441               if(!((i_regs->wasconst>>s)&1))
2442                 emit_addimm(s,imm[i],t);
2443               else
2444                 emit_movimm(constmap[i][s]+imm[i],t);
2445             }
2446           }
2447         }
2448       } else {
2449         if(t>=0) {
2450           if(!((i_regs->isconst>>t)&1))
2451             emit_movimm(imm[i],t);
2452         }
2453       }
2454     }
2455   }
2456   if(opcode[i]==0x18||opcode[i]==0x19) { // DADDI/DADDIU
2457     if(rt1[i]) {
2458       signed char sh,sl,th,tl;
2459       th=get_reg(i_regs->regmap,rt1[i]|64);
2460       tl=get_reg(i_regs->regmap,rt1[i]);
2461       sh=get_reg(i_regs->regmap,rs1[i]|64);
2462       sl=get_reg(i_regs->regmap,rs1[i]);
2463       if(tl>=0) {
2464         if(rs1[i]) {
2465           assert(sh>=0);
2466           assert(sl>=0);
2467           if(th>=0) {
2468             emit_addimm64_32(sh,sl,imm[i],th,tl);
2469           }
2470           else {
2471             emit_addimm(sl,imm[i],tl);
2472           }
2473         } else {
2474           emit_movimm(imm[i],tl);
2475           if(th>=0) emit_movimm(((signed int)imm[i])>>31,th);
2476         }
2477       }
2478     }
2479   }
2480   else if(opcode[i]==0x0a||opcode[i]==0x0b) { // SLTI/SLTIU
2481     if(rt1[i]) {
2482       //assert(rs1[i]!=0); // r0 might be valid, but it's probably a bug
2483       signed char sh,sl,t;
2484       t=get_reg(i_regs->regmap,rt1[i]);
2485       sh=get_reg(i_regs->regmap,rs1[i]|64);
2486       sl=get_reg(i_regs->regmap,rs1[i]);
2487       //assert(t>=0);
2488       if(t>=0) {
2489         if(rs1[i]>0) {
2490           if(sh<0) assert((i_regs->was32>>rs1[i])&1);
2491           if(sh<0||((i_regs->was32>>rs1[i])&1)) {
2492             if(opcode[i]==0x0a) { // SLTI
2493               if(sl<0) {
2494                 if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2495                 emit_slti32(t,imm[i],t);
2496               }else{
2497                 emit_slti32(sl,imm[i],t);
2498               }
2499             }
2500             else { // SLTIU
2501               if(sl<0) {
2502                 if(i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2503                 emit_sltiu32(t,imm[i],t);
2504               }else{
2505                 emit_sltiu32(sl,imm[i],t);
2506               }
2507             }
2508           }else{ // 64-bit
2509             assert(sl>=0);
2510             if(opcode[i]==0x0a) // SLTI
2511               emit_slti64_32(sh,sl,imm[i],t);
2512             else // SLTIU
2513               emit_sltiu64_32(sh,sl,imm[i],t);
2514           }
2515         }else{
2516           // SLTI(U) with r0 is just stupid,
2517           // nonetheless examples can be found
2518           if(opcode[i]==0x0a) // SLTI
2519             if(0<imm[i]) emit_movimm(1,t);
2520             else emit_zeroreg(t);
2521           else // SLTIU
2522           {
2523             if(imm[i]) emit_movimm(1,t);
2524             else emit_zeroreg(t);
2525           }
2526         }
2527       }
2528     }
2529   }
2530   else if(opcode[i]>=0x0c&&opcode[i]<=0x0e) { // ANDI/ORI/XORI
2531     if(rt1[i]) {
2532       signed char sh,sl,th,tl;
2533       th=get_reg(i_regs->regmap,rt1[i]|64);
2534       tl=get_reg(i_regs->regmap,rt1[i]);
2535       sh=get_reg(i_regs->regmap,rs1[i]|64);
2536       sl=get_reg(i_regs->regmap,rs1[i]);
2537       if(tl>=0 && !((i_regs->isconst>>tl)&1)) {
2538         if(opcode[i]==0x0c) //ANDI
2539         {
2540           if(rs1[i]) {
2541             if(sl<0) {
2542               if(i_regs->regmap_entry[tl]!=rs1[i]) emit_loadreg(rs1[i],tl);
2543               emit_andimm(tl,imm[i],tl);
2544             }else{
2545               if(!((i_regs->wasconst>>sl)&1))
2546                 emit_andimm(sl,imm[i],tl);
2547               else
2548                 emit_movimm(constmap[i][sl]&imm[i],tl);
2549             }
2550           }
2551           else
2552             emit_zeroreg(tl);
2553           if(th>=0) emit_zeroreg(th);
2554         }
2555         else
2556         {
2557           if(rs1[i]) {
2558             if(sl<0) {
2559               if(i_regs->regmap_entry[tl]!=rs1[i]) emit_loadreg(rs1[i],tl);
2560             }
2561             if(th>=0) {
2562               if(sh<0) {
2563                 emit_loadreg(rs1[i]|64,th);
2564               }else{
2565                 emit_mov(sh,th);
2566               }
2567             }
2568             if(opcode[i]==0x0d) //ORI
2569             if(sl<0) {
2570               emit_orimm(tl,imm[i],tl);
2571             }else{
2572               if(!((i_regs->wasconst>>sl)&1))
2573                 emit_orimm(sl,imm[i],tl);
2574               else
2575                 emit_movimm(constmap[i][sl]|imm[i],tl);
2576             }
2577             if(opcode[i]==0x0e) //XORI
2578             if(sl<0) {
2579               emit_xorimm(tl,imm[i],tl);
2580             }else{
2581               if(!((i_regs->wasconst>>sl)&1))
2582                 emit_xorimm(sl,imm[i],tl);
2583               else
2584                 emit_movimm(constmap[i][sl]^imm[i],tl);
2585             }
2586           }
2587           else {
2588             emit_movimm(imm[i],tl);
2589             if(th>=0) emit_zeroreg(th);
2590           }
2591         }
2592       }
2593     }
2594   }
2595 }
2596
2597 void shiftimm_assemble(int i,struct regstat *i_regs)
2598 {
2599   if(opcode2[i]<=0x3) // SLL/SRL/SRA
2600   {
2601     if(rt1[i]) {
2602       signed char s,t;
2603       t=get_reg(i_regs->regmap,rt1[i]);
2604       s=get_reg(i_regs->regmap,rs1[i]);
2605       //assert(t>=0);
2606       if(t>=0){
2607         if(rs1[i]==0)
2608         {
2609           emit_zeroreg(t);
2610         }
2611         else
2612         {
2613           if(s<0&&i_regs->regmap_entry[t]!=rs1[i]) emit_loadreg(rs1[i],t);
2614           if(imm[i]) {
2615             if(opcode2[i]==0) // SLL
2616             {
2617               emit_shlimm(s<0?t:s,imm[i],t);
2618             }
2619             if(opcode2[i]==2) // SRL
2620             {
2621               emit_shrimm(s<0?t:s,imm[i],t);
2622             }
2623             if(opcode2[i]==3) // SRA
2624             {
2625               emit_sarimm(s<0?t:s,imm[i],t);
2626             }
2627           }else{
2628             // Shift by zero
2629             if(s>=0 && s!=t) emit_mov(s,t);
2630           }
2631         }
2632       }
2633       //emit_storereg(rt1[i],t); //DEBUG
2634     }
2635   }
2636   if(opcode2[i]>=0x38&&opcode2[i]<=0x3b) // DSLL/DSRL/DSRA
2637   {
2638     if(rt1[i]) {
2639       signed char sh,sl,th,tl;
2640       th=get_reg(i_regs->regmap,rt1[i]|64);
2641       tl=get_reg(i_regs->regmap,rt1[i]);
2642       sh=get_reg(i_regs->regmap,rs1[i]|64);
2643       sl=get_reg(i_regs->regmap,rs1[i]);
2644       if(tl>=0) {
2645         if(rs1[i]==0)
2646         {
2647           emit_zeroreg(tl);
2648           if(th>=0) emit_zeroreg(th);
2649         }
2650         else
2651         {
2652           assert(sl>=0);
2653           assert(sh>=0);
2654           if(imm[i]) {
2655             if(opcode2[i]==0x38) // DSLL
2656             {
2657               if(th>=0) emit_shldimm(sh,sl,imm[i],th);
2658               emit_shlimm(sl,imm[i],tl);
2659             }
2660             if(opcode2[i]==0x3a) // DSRL
2661             {
2662               emit_shrdimm(sl,sh,imm[i],tl);
2663               if(th>=0) emit_shrimm(sh,imm[i],th);
2664             }
2665             if(opcode2[i]==0x3b) // DSRA
2666             {
2667               emit_shrdimm(sl,sh,imm[i],tl);
2668               if(th>=0) emit_sarimm(sh,imm[i],th);
2669             }
2670           }else{
2671             // Shift by zero
2672             if(sl!=tl) emit_mov(sl,tl);
2673             if(th>=0&&sh!=th) emit_mov(sh,th);
2674           }
2675         }
2676       }
2677     }
2678   }
2679   if(opcode2[i]==0x3c) // DSLL32
2680   {
2681     if(rt1[i]) {
2682       signed char sl,tl,th;
2683       tl=get_reg(i_regs->regmap,rt1[i]);
2684       th=get_reg(i_regs->regmap,rt1[i]|64);
2685       sl=get_reg(i_regs->regmap,rs1[i]);
2686       if(th>=0||tl>=0){
2687         assert(tl>=0);
2688         assert(th>=0);
2689         assert(sl>=0);
2690         emit_mov(sl,th);
2691         emit_zeroreg(tl);
2692         if(imm[i]>32)
2693         {
2694           emit_shlimm(th,imm[i]&31,th);
2695         }
2696       }
2697     }
2698   }
2699   if(opcode2[i]==0x3e) // DSRL32
2700   {
2701     if(rt1[i]) {
2702       signed char sh,tl,th;
2703       tl=get_reg(i_regs->regmap,rt1[i]);
2704       th=get_reg(i_regs->regmap,rt1[i]|64);
2705       sh=get_reg(i_regs->regmap,rs1[i]|64);
2706       if(tl>=0){
2707         assert(sh>=0);
2708         emit_mov(sh,tl);
2709         if(th>=0) emit_zeroreg(th);
2710         if(imm[i]>32)
2711         {
2712           emit_shrimm(tl,imm[i]&31,tl);
2713         }
2714       }
2715     }
2716   }
2717   if(opcode2[i]==0x3f) // DSRA32
2718   {
2719     if(rt1[i]) {
2720       signed char sh,tl;
2721       tl=get_reg(i_regs->regmap,rt1[i]);
2722       sh=get_reg(i_regs->regmap,rs1[i]|64);
2723       if(tl>=0){
2724         assert(sh>=0);
2725         emit_mov(sh,tl);
2726         if(imm[i]>32)
2727         {
2728           emit_sarimm(tl,imm[i]&31,tl);
2729         }
2730       }
2731     }
2732   }
2733 }
2734
2735 #ifndef shift_assemble
2736 void shift_assemble(int i,struct regstat *i_regs)
2737 {
2738   printf("Need shift_assemble for this architecture.\n");
2739   exit(1);
2740 }
2741 #endif
2742
2743 void load_assemble(int i,struct regstat *i_regs)
2744 {
2745   int s,th,tl,addr,map=-1;
2746   int offset;
2747   int jaddr=0;
2748   int memtarget=0,c=0;
2749   u_int hr,reglist=0;
2750   th=get_reg(i_regs->regmap,rt1[i]|64);
2751   tl=get_reg(i_regs->regmap,rt1[i]);
2752   s=get_reg(i_regs->regmap,rs1[i]);
2753   offset=imm[i];
2754   for(hr=0;hr<HOST_REGS;hr++) {
2755     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
2756   }
2757   if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG);
2758   if(s>=0) {
2759     c=(i_regs->wasconst>>s)&1;
2760     memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
2761     if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
2762   }
2763   //printf("load_assemble: c=%d\n",c);
2764   //if(c) printf("load_assemble: const=%x\n",(int)constmap[i][s]+offset);
2765   // FIXME: Even if the load is a NOP, we should check for pagefaults...
2766 #ifdef PCSX
2767   if(tl<0&&(!c||(((u_int)constmap[i][s]+offset)>>16)==0x1f80)
2768     ||rt1[i]==0) {
2769       // could be FIFO, must perform the read
2770       // ||dummy read
2771       assem_debug("(forced read)\n");
2772       tl=get_reg(i_regs->regmap,-1);
2773       assert(tl>=0);
2774   }
2775 #endif
2776   if(offset||s<0||c) addr=tl;
2777   else addr=s;
2778   if(tl>=0) {
2779     //assert(tl>=0);
2780     //assert(rt1[i]);
2781     reglist&=~(1<<tl);
2782     if(th>=0) reglist&=~(1<<th);
2783     if(!using_tlb) {
2784       if(!c) {
2785 //#define R29_HACK 1
2786         #ifdef R29_HACK
2787         // Strmnnrmn's speed hack
2788         if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
2789         #endif
2790         {
2791           emit_cmpimm(addr,RAM_SIZE);
2792           jaddr=(int)out;
2793           #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
2794           // Hint to branch predictor that the branch is unlikely to be taken
2795           if(rs1[i]>=28)
2796             emit_jno_unlikely(0);
2797           else
2798           #endif
2799           emit_jno(0);
2800         }
2801       }
2802     }else{ // using tlb
2803       int x=0;
2804       if (opcode[i]==0x20||opcode[i]==0x24) x=3; // LB/LBU
2805       if (opcode[i]==0x21||opcode[i]==0x25) x=2; // LH/LHU
2806       map=get_reg(i_regs->regmap,TLREG);
2807       assert(map>=0);
2808       map=do_tlb_r(addr,tl,map,x,-1,-1,c,constmap[i][s]+offset);
2809       do_tlb_r_branch(map,c,constmap[i][s]+offset,&jaddr);
2810     }
2811     if (opcode[i]==0x20) { // LB
2812       if(!c||memtarget) {
2813         #ifdef HOST_IMM_ADDR32
2814         if(c)
2815           emit_movsbl_tlb((constmap[i][s]+offset)^3,map,tl);
2816         else
2817         #endif
2818         {
2819           //emit_xorimm(addr,3,tl);
2820           //gen_tlb_addr_r(tl,map);
2821           //emit_movsbl_indexed((int)rdram-0x80000000,tl,tl);
2822           int x=0;
2823 #ifdef BIG_ENDIAN_MIPS
2824           if(!c) emit_xorimm(addr,3,tl);
2825           else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
2826 #else
2827           if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
2828           else if (tl!=addr) emit_mov(addr,tl);
2829 #endif
2830           emit_movsbl_indexed_tlb(x,tl,map,tl);
2831         }
2832         if(jaddr)
2833           add_stub(LOADB_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2834       }
2835       else
2836         inline_readstub(LOADB_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2837     }
2838     if (opcode[i]==0x21) { // LH
2839       if(!c||memtarget) {
2840         #ifdef HOST_IMM_ADDR32
2841         if(c)
2842           emit_movswl_tlb((constmap[i][s]+offset)^2,map,tl);
2843         else
2844         #endif
2845         {
2846           int x=0;
2847 #ifdef BIG_ENDIAN_MIPS
2848           if(!c) emit_xorimm(addr,2,tl);
2849           else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
2850 #else
2851           if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
2852           else if (tl!=addr) emit_mov(addr,tl);
2853 #endif
2854           //#ifdef
2855           //emit_movswl_indexed_tlb(x,tl,map,tl);
2856           //else
2857           if(map>=0) {
2858             gen_tlb_addr_r(tl,map);
2859             emit_movswl_indexed(x,tl,tl);
2860           }else
2861             emit_movswl_indexed((int)rdram-0x80000000+x,tl,tl);
2862         }
2863         if(jaddr)
2864           add_stub(LOADH_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2865       }
2866       else
2867         inline_readstub(LOADH_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2868     }
2869     if (opcode[i]==0x23) { // LW
2870       if(!c||memtarget) {
2871         //emit_readword_indexed((int)rdram-0x80000000,addr,tl);
2872         #ifdef HOST_IMM_ADDR32
2873         if(c)
2874           emit_readword_tlb(constmap[i][s]+offset,map,tl);
2875         else
2876         #endif
2877         emit_readword_indexed_tlb(0,addr,map,tl);
2878         if(jaddr)
2879           add_stub(LOADW_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2880       }
2881       else
2882         inline_readstub(LOADW_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2883     }
2884     if (opcode[i]==0x24) { // LBU
2885       if(!c||memtarget) {
2886         #ifdef HOST_IMM_ADDR32
2887         if(c)
2888           emit_movzbl_tlb((constmap[i][s]+offset)^3,map,tl);
2889         else
2890         #endif
2891         {
2892           //emit_xorimm(addr,3,tl);
2893           //gen_tlb_addr_r(tl,map);
2894           //emit_movzbl_indexed((int)rdram-0x80000000,tl,tl);
2895           int x=0;
2896 #ifdef BIG_ENDIAN_MIPS
2897           if(!c) emit_xorimm(addr,3,tl);
2898           else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
2899 #else
2900           if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
2901           else if (tl!=addr) emit_mov(addr,tl);
2902 #endif
2903           emit_movzbl_indexed_tlb(x,tl,map,tl);
2904         }
2905         if(jaddr)
2906           add_stub(LOADBU_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2907       }
2908       else
2909         inline_readstub(LOADBU_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2910     }
2911     if (opcode[i]==0x25) { // LHU
2912       if(!c||memtarget) {
2913         #ifdef HOST_IMM_ADDR32
2914         if(c)
2915           emit_movzwl_tlb((constmap[i][s]+offset)^2,map,tl);
2916         else
2917         #endif
2918         {
2919           int x=0;
2920 #ifdef BIG_ENDIAN_MIPS
2921           if(!c) emit_xorimm(addr,2,tl);
2922           else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
2923 #else
2924           if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
2925           else if (tl!=addr) emit_mov(addr,tl);
2926 #endif
2927           //#ifdef
2928           //emit_movzwl_indexed_tlb(x,tl,map,tl);
2929           //#else
2930           if(map>=0) {
2931             gen_tlb_addr_r(tl,map);
2932             emit_movzwl_indexed(x,tl,tl);
2933           }else
2934             emit_movzwl_indexed((int)rdram-0x80000000+x,tl,tl);
2935           if(jaddr)
2936             add_stub(LOADHU_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2937         }
2938       }
2939       else
2940         inline_readstub(LOADHU_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2941     }
2942     if (opcode[i]==0x27) { // LWU
2943       assert(th>=0);
2944       if(!c||memtarget) {
2945         //emit_readword_indexed((int)rdram-0x80000000,addr,tl);
2946         #ifdef HOST_IMM_ADDR32
2947         if(c)
2948           emit_readword_tlb(constmap[i][s]+offset,map,tl);
2949         else
2950         #endif
2951         emit_readword_indexed_tlb(0,addr,map,tl);
2952         if(jaddr)
2953           add_stub(LOADW_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2954       }
2955       else {
2956         inline_readstub(LOADW_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2957       }
2958       emit_zeroreg(th);
2959     }
2960     if (opcode[i]==0x37) { // LD
2961       if(!c||memtarget) {
2962         //gen_tlb_addr_r(tl,map);
2963         //if(th>=0) emit_readword_indexed((int)rdram-0x80000000,addr,th);
2964         //emit_readword_indexed((int)rdram-0x7FFFFFFC,addr,tl);
2965         #ifdef HOST_IMM_ADDR32
2966         if(c)
2967           emit_readdword_tlb(constmap[i][s]+offset,map,th,tl);
2968         else
2969         #endif
2970         emit_readdword_indexed_tlb(0,addr,map,th,tl);
2971         if(jaddr)
2972           add_stub(LOADD_STUB,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
2973       }
2974       else
2975         inline_readstub(LOADD_STUB,i,constmap[i][s]+offset,i_regs->regmap,rt1[i],ccadj[i],reglist);
2976     }
2977     //emit_storereg(rt1[i],tl); // DEBUG
2978   }
2979   //if(opcode[i]==0x23)
2980   //if(opcode[i]==0x24)
2981   //if(opcode[i]==0x23||opcode[i]==0x24)
2982   /*if(opcode[i]==0x21||opcode[i]==0x23||opcode[i]==0x24)
2983   {
2984     //emit_pusha();
2985     save_regs(0x100f);
2986         emit_readword((int)&last_count,ECX);
2987         #ifdef __i386__
2988         if(get_reg(i_regs->regmap,CCREG)<0)
2989           emit_loadreg(CCREG,HOST_CCREG);
2990         emit_add(HOST_CCREG,ECX,HOST_CCREG);
2991         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
2992         emit_writeword(HOST_CCREG,(int)&Count);
2993         #endif
2994         #ifdef __arm__
2995         if(get_reg(i_regs->regmap,CCREG)<0)
2996           emit_loadreg(CCREG,0);
2997         else
2998           emit_mov(HOST_CCREG,0);
2999         emit_add(0,ECX,0);
3000         emit_addimm(0,2*ccadj[i],0);
3001         emit_writeword(0,(int)&Count);
3002         #endif
3003     emit_call((int)memdebug);
3004     //emit_popa();
3005     restore_regs(0x100f);
3006   }/**/
3007 }
3008
3009 #ifndef loadlr_assemble
3010 void loadlr_assemble(int i,struct regstat *i_regs)
3011 {
3012   printf("Need loadlr_assemble for this architecture.\n");
3013   exit(1);
3014 }
3015 #endif
3016
3017 void store_assemble(int i,struct regstat *i_regs)
3018 {
3019   int s,th,tl,map=-1;
3020   int addr,temp;
3021   int offset;
3022   int jaddr=0,jaddr2,type;
3023   int memtarget=0,c=0;
3024   int agr=AGEN1+(i&1);
3025   u_int hr,reglist=0;
3026   th=get_reg(i_regs->regmap,rs2[i]|64);
3027   tl=get_reg(i_regs->regmap,rs2[i]);
3028   s=get_reg(i_regs->regmap,rs1[i]);
3029   temp=get_reg(i_regs->regmap,agr);
3030   if(temp<0) temp=get_reg(i_regs->regmap,-1);
3031   offset=imm[i];
3032   if(s>=0) {
3033     c=(i_regs->wasconst>>s)&1;
3034     memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
3035     if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
3036   }
3037   assert(tl>=0);
3038   assert(temp>=0);
3039   for(hr=0;hr<HOST_REGS;hr++) {
3040     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3041   }
3042   if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG);
3043   if(offset||s<0||c) addr=temp;
3044   else addr=s;
3045   if(!using_tlb) {
3046     if(!c) {
3047       #ifdef R29_HACK
3048       // Strmnnrmn's speed hack
3049       memtarget=1;
3050       if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
3051       #endif
3052       emit_cmpimm(addr,RAM_SIZE);
3053       #ifdef DESTRUCTIVE_SHIFT
3054       if(s==addr) emit_mov(s,temp);
3055       #endif
3056       #ifdef R29_HACK
3057       if(rs1[i]!=29||start<0x80001000||start>=0x80000000+RAM_SIZE)
3058       #endif
3059       {
3060         jaddr=(int)out;
3061         #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK
3062         // Hint to branch predictor that the branch is unlikely to be taken
3063         if(rs1[i]>=28)
3064           emit_jno_unlikely(0);
3065         else
3066         #endif
3067         emit_jno(0);
3068       }
3069     }
3070   }else{ // using tlb
3071     int x=0;
3072     if (opcode[i]==0x28) x=3; // SB
3073     if (opcode[i]==0x29) x=2; // SH
3074     map=get_reg(i_regs->regmap,TLREG);
3075     assert(map>=0);
3076     map=do_tlb_w(addr,temp,map,x,c,constmap[i][s]+offset);
3077     do_tlb_w_branch(map,c,constmap[i][s]+offset,&jaddr);
3078   }
3079
3080   if (opcode[i]==0x28) { // SB
3081     if(!c||memtarget) {
3082       int x=0;
3083 #ifdef BIG_ENDIAN_MIPS
3084       if(!c) emit_xorimm(addr,3,temp);
3085       else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
3086 #else
3087       if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
3088       else if (addr!=temp) emit_mov(addr,temp);
3089 #endif
3090       //gen_tlb_addr_w(temp,map);
3091       //emit_writebyte_indexed(tl,(int)rdram-0x80000000,temp);
3092       emit_writebyte_indexed_tlb(tl,x,temp,map,temp);
3093     }
3094     type=STOREB_STUB;
3095   }
3096   if (opcode[i]==0x29) { // SH
3097     if(!c||memtarget) {
3098       int x=0;
3099 #ifdef BIG_ENDIAN_MIPS
3100       if(!c) emit_xorimm(addr,2,temp);
3101       else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
3102 #else
3103       if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
3104       else if (addr!=temp) emit_mov(addr,temp);
3105 #endif
3106       //#ifdef
3107       //emit_writehword_indexed_tlb(tl,x,temp,map,temp);
3108       //#else
3109       if(map>=0) {
3110         gen_tlb_addr_w(temp,map);
3111         emit_writehword_indexed(tl,x,temp);
3112       }else
3113         emit_writehword_indexed(tl,(int)rdram-0x80000000+x,temp);
3114     }
3115     type=STOREH_STUB;
3116   }
3117   if (opcode[i]==0x2B) { // SW
3118     if(!c||memtarget)
3119       //emit_writeword_indexed(tl,(int)rdram-0x80000000,addr);
3120       emit_writeword_indexed_tlb(tl,0,addr,map,temp);
3121     type=STOREW_STUB;
3122   }
3123   if (opcode[i]==0x3F) { // SD
3124     if(!c||memtarget) {
3125       if(rs2[i]) {
3126         assert(th>=0);
3127         //emit_writeword_indexed(th,(int)rdram-0x80000000,addr);
3128         //emit_writeword_indexed(tl,(int)rdram-0x7FFFFFFC,addr);
3129         emit_writedword_indexed_tlb(th,tl,0,addr,map,temp);
3130       }else{
3131         // Store zero
3132         //emit_writeword_indexed(tl,(int)rdram-0x80000000,temp);
3133         //emit_writeword_indexed(tl,(int)rdram-0x7FFFFFFC,temp);
3134         emit_writedword_indexed_tlb(tl,tl,0,addr,map,temp);
3135       }
3136     }
3137     type=STORED_STUB;
3138   }
3139   if(!using_tlb&&(!c||memtarget))
3140     // addr could be a temp, make sure it survives STORE*_STUB
3141     reglist|=1<<addr;
3142   if(jaddr) {
3143     add_stub(type,jaddr,(int)out,i,addr,(int)i_regs,ccadj[i],reglist);
3144   } else if(!memtarget) {
3145     inline_writestub(type,i,constmap[i][s]+offset,i_regs->regmap,rs2[i],ccadj[i],reglist);
3146   }
3147   if(!using_tlb) {
3148     if(!c||memtarget) {
3149       #ifdef DESTRUCTIVE_SHIFT
3150       // The x86 shift operation is 'destructive'; it overwrites the
3151       // source register, so we need to make a copy first and use that.
3152       addr=temp;
3153       #endif
3154       #if defined(HOST_IMM8)
3155       int ir=get_reg(i_regs->regmap,INVCP);
3156       assert(ir>=0);
3157       emit_cmpmem_indexedsr12_reg(ir,addr,1);
3158       #else
3159       emit_cmpmem_indexedsr12_imm((int)invalid_code,addr,1);
3160       #endif
3161       jaddr2=(int)out;
3162       emit_jne(0);
3163       add_stub(INVCODE_STUB,jaddr2,(int)out,reglist|(1<<HOST_CCREG),addr,0,0,0);
3164     }
3165   }
3166   //if(opcode[i]==0x2B || opcode[i]==0x3F)
3167   //if(opcode[i]==0x2B || opcode[i]==0x28)
3168   //if(opcode[i]==0x2B || opcode[i]==0x29)
3169   //if(opcode[i]==0x2B)
3170   /*if(opcode[i]==0x2B || opcode[i]==0x28 || opcode[i]==0x29 || opcode[i]==0x3F)
3171   {
3172     //emit_pusha();
3173     save_regs(0x100f);
3174         emit_readword((int)&last_count,ECX);
3175         #ifdef __i386__
3176         if(get_reg(i_regs->regmap,CCREG)<0)
3177           emit_loadreg(CCREG,HOST_CCREG);
3178         emit_add(HOST_CCREG,ECX,HOST_CCREG);
3179         emit_addimm(HOST_CCREG,2*ccadj[i],HOST_CCREG);
3180         emit_writeword(HOST_CCREG,(int)&Count);
3181         #endif
3182         #ifdef __arm__
3183         if(get_reg(i_regs->regmap,CCREG)<0)
3184           emit_loadreg(CCREG,0);
3185         else
3186           emit_mov(HOST_CCREG,0);
3187         emit_add(0,ECX,0);
3188         emit_addimm(0,2*ccadj[i],0);
3189         emit_writeword(0,(int)&Count);
3190         #endif
3191     emit_call((int)memdebug);
3192     //emit_popa();
3193     restore_regs(0x100f);
3194   }/**/
3195 }
3196
3197 void storelr_assemble(int i,struct regstat *i_regs)
3198 {
3199   int s,th,tl;
3200   int temp;
3201   int temp2;
3202   int offset;
3203   int jaddr=0,jaddr2;
3204   int case1,case2,case3;
3205   int done0,done1,done2;
3206   int memtarget,c=0;
3207   int agr=AGEN1+(i&1);
3208   u_int hr,reglist=0;
3209   th=get_reg(i_regs->regmap,rs2[i]|64);
3210   tl=get_reg(i_regs->regmap,rs2[i]);
3211   s=get_reg(i_regs->regmap,rs1[i]);
3212   temp=get_reg(i_regs->regmap,agr);
3213   if(temp<0) temp=get_reg(i_regs->regmap,-1);
3214   offset=imm[i];
3215   if(s>=0) {
3216     c=(i_regs->isconst>>s)&1;
3217     memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE;
3218     if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
3219   }
3220   assert(tl>=0);
3221   for(hr=0;hr<HOST_REGS;hr++) {
3222     if(i_regs->regmap[hr]>=0) reglist|=1<<hr;
3223   }
3224   if(tl>=0) {
3225     assert(temp>=0);
3226     if(!using_tlb) {
3227       if(!c) {
3228         emit_cmpimm(s<0||offset?temp:s,RAM_SIZE);
3229         if(!offset&&s!=temp) emit_mov(s,temp);
3230         jaddr=(int)out;
3231         emit_jno(0);
3232       }
3233       else
3234       {
3235         if(!memtarget||!rs1[i]) {
3236           jaddr=(int)out;
3237           emit_jmp(0);
3238         }
3239       }
3240       if((u_int)rdram!=0x80000000) 
3241         emit_addimm_no_flags((u_int)rdram-(u_int)0x80000000,temp);
3242     }else{ // using tlb
3243       int map=get_reg(i_regs->regmap,TLREG);
3244       assert(map>=0);
3245       map=do_tlb_w(c||s<0||offset?temp:s,temp,map,0,c,constmap[i][s]+offset);
3246       if(!c&&!offset&&s>=0) emit_mov(s,temp);
3247       do_tlb_w_branch(map,c,constmap[i][s]+offset,&jaddr);
3248       if(!jaddr&&!memtarget) {
3249         jaddr=(int)out;
3250         emit_jmp(0);
3251       }
3252       gen_tlb_addr_w(temp,map);
3253     }
3254
3255     if (opcode[i]==0x2C||opcode[i]==0x2D) { // SDL/SDR
3256       temp2=get_reg(i_regs->regmap,FTEMP);
3257       if(!rs2[i]) temp2=th=tl;
3258     }
3259
3260 #ifndef BIG_ENDIAN_MIPS
3261     emit_xorimm(temp,3,temp);
3262 #endif
3263     emit_testimm(temp,2);
3264     case2=(int)out;
3265     emit_jne(0);
3266     emit_testimm(temp,1);
3267     case1=(int)out;
3268     emit_jne(0);
3269     // 0
3270     if (opcode[i]==0x2A) { // SWL
3271       emit_writeword_indexed(tl,0,temp);
3272     }
3273     if (opcode[i]==0x2E) { // SWR
3274       emit_writebyte_indexed(tl,3,temp);
3275     }
3276     if (opcode[i]==0x2C) { // SDL
3277       emit_writeword_indexed(th,0,temp);
3278       if(rs2[i]) emit_mov(tl,temp2);
3279     }
3280     if (opcode[i]==0x2D) { // SDR
3281       emit_writebyte_indexed(tl,3,temp);
3282       if(rs2[i]) emit_shldimm(th,tl,24,temp2);
3283     }
3284     done0=(int)out;
3285     emit_jmp(0);
3286     // 1
3287     set_jump_target(case1,(int)out);
3288     if (opcode[i]==0x2A) { // SWL
3289       // Write 3 msb into three least significant bytes
3290       if(rs2[i]) emit_rorimm(tl,8,tl);
3291       emit_writehword_indexed(tl,-1,temp);
3292       if(rs2[i]) emit_rorimm(tl,16,tl);
3293       emit_writebyte_indexed(tl,1,temp);
3294       if(rs2[i]) emit_rorimm(tl,8,tl);
3295     }
3296     if (opcode[i]==0x2E) { // SWR
3297       // Write two lsb into two most significant bytes
3298       emit_writehword_indexed(tl,1,temp);
3299     }
3300     if (opcode[i]==0x2C) { // SDL
3301       if(rs2[i]) emit_shrdimm(tl,th,8,temp2);
3302       // Write 3 msb into three least significant bytes
3303       if(rs2[i]) emit_rorimm(th,8,th);
3304       emit_writehword_indexed(th,-1,temp);
3305       if(rs2[i]) emit_rorimm(th,16,th);
3306       emit_writebyte_indexed(th,1,temp);
3307       if(rs2[i]) emit_rorimm(th,8,th);
3308     }
3309     if (opcode[i]==0x2D) { // SDR
3310       if(rs2[i]) emit_shldimm(th,tl,16,temp2);
3311       // Write two lsb into two most significant bytes
3312       emit_writehword_indexed(tl,1,temp);
3313     }
3314     done1=(int)out;
3315     emit_jmp(0);
3316     // 2
3317     set_jump_target(case2,(int)out);
3318     emit_testimm(temp,1);
3319     case3=(int)out;
3320     emit_jne(0);
3321     if (opcode[i]==0x2A) { // SWL
3322       // Write two msb into two least significant bytes
3323       if(rs2[i]) emit_rorimm(tl,16,tl);
3324       emit_writehword_indexed(tl,-2,temp);
3325       if(rs2[i]) emit_rorimm(tl,16,tl);
3326     }
3327     if (opcode[i]==0x2E) { // SWR
3328       // Write 3 lsb into three most significant bytes
3329       emit_writebyte_indexed(tl,-1,temp);
3330       if(rs2[i]) emit_rorimm(tl,8,tl);
3331       emit_writehword_indexed(tl,0,temp);
3332       if(rs2[i]) emit_rorimm(tl,24,tl);
3333     }
3334     if (opcode[i]==0x2C) { // SDL
3335       if(rs2[i]) emit_shrdimm(tl,th,16,temp2);
3336       // Write two msb into two least significant bytes
3337       if(rs2[i]) emit_rorimm(th,16,th);
3338       emit_writehword_indexed(th,-2,temp);
3339       if(rs2[i]) emit_rorimm(th,16,th);
3340     }
3341     if (opcode[i]==0x2D) { // SDR
3342       if(rs2[i]) emit_shldimm(th,tl,8,temp2);
3343       // Write 3 lsb into three most significant bytes
3344       emit_writebyte_indexed(tl,-1,temp);
3345       if(rs2[i]) emit_rorimm(tl,8,tl);
3346       emit_writehword_indexed(tl,0,temp);
3347       if(rs2[i]) emit_rorimm(tl,24,tl);
3348     }
3349     done2=(int)out;
3350     emit_jmp(0);
3351     // 3
3352     set_jump_target(case3,(int)out);
3353     if (opcode[i]==0x2A) { // SWL
3354       // Write msb into least significant byte
3355       if(rs2[i]) emit_rorimm(tl,24,tl);
3356       emit_writebyte_indexed(tl,-3,temp);
3357       if(rs2[i]) emit_rorimm(tl,8,tl);
3358     }
3359     if (opcode[i]==0x2E) { // SWR
3360       // Write entire word
3361       emit_writeword_indexed(tl,-3,temp);
3362     }
3363     if (opcode[i]==0x2C) { // SDL
3364       if(rs2[i]) emit_shrdimm(tl,th,24,temp2);
3365       // Write msb into least significant byte
3366       if(rs2[i]) emit_rorimm(th,24,th);
3367       emit_writebyte_indexed(th,-3,temp);
3368       if(rs2[i]) emit_rorimm(th,8,th);
3369     }
3370     if (opcode[i]==0x2D) { // SDR
3371       if(rs2[i]) emit_mov(th,temp2);