| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - new_dynarec.c * |
| 3 | * Copyright (C) 2009-2011 Ari64 * |
| 4 | * * |
| 5 | * This program is free software; you can redistribute it and/or modify * |
| 6 | * it under the terms of the GNU General Public License as published by * |
| 7 | * the Free Software Foundation; either version 2 of the License, or * |
| 8 | * (at your option) any later version. * |
| 9 | * * |
| 10 | * This program is distributed in the hope that it will be useful, * |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 13 | * GNU General Public License for more details. * |
| 14 | * * |
| 15 | * You should have received a copy of the GNU General Public License * |
| 16 | * along with this program; if not, write to the * |
| 17 | * Free Software Foundation, Inc., * |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 19 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 20 | |
| 21 | #include <stdlib.h> |
| 22 | #include <stdint.h> //include for uint64_t |
| 23 | #include <assert.h> |
| 24 | #include <errno.h> |
| 25 | #include <sys/mman.h> |
| 26 | #ifdef __MACH__ |
| 27 | #include <libkern/OSCacheControl.h> |
| 28 | #endif |
| 29 | #ifdef _3DS |
| 30 | #include <3ds_utils.h> |
| 31 | #endif |
| 32 | |
| 33 | #include "new_dynarec_config.h" |
| 34 | #include "../psxhle.h" |
| 35 | #include "../psxinterpreter.h" |
| 36 | #include "../gte.h" |
| 37 | #include "emu_if.h" // emulator interface |
| 38 | #include "arm_features.h" |
| 39 | |
| 40 | #define noinline __attribute__((noinline,noclone)) |
| 41 | #ifndef ARRAY_SIZE |
| 42 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 43 | #endif |
| 44 | #ifndef min |
| 45 | #define min(a, b) ((b) < (a) ? (b) : (a)) |
| 46 | #endif |
| 47 | #ifndef max |
| 48 | #define max(a, b) ((b) > (a) ? (b) : (a)) |
| 49 | #endif |
| 50 | |
| 51 | //#define DISASM |
| 52 | //#define ASSEM_PRINT |
| 53 | |
| 54 | #ifdef ASSEM_PRINT |
| 55 | #define assem_debug printf |
| 56 | #else |
| 57 | #define assem_debug(...) |
| 58 | #endif |
| 59 | //#define inv_debug printf |
| 60 | #define inv_debug(...) |
| 61 | |
| 62 | #ifdef __i386__ |
| 63 | #include "assem_x86.h" |
| 64 | #endif |
| 65 | #ifdef __x86_64__ |
| 66 | #include "assem_x64.h" |
| 67 | #endif |
| 68 | #ifdef __arm__ |
| 69 | #include "assem_arm.h" |
| 70 | #endif |
| 71 | #ifdef __aarch64__ |
| 72 | #include "assem_arm64.h" |
| 73 | #endif |
| 74 | |
| 75 | #define RAM_SIZE 0x200000 |
| 76 | #define MAXBLOCK 4096 |
| 77 | #define MAX_OUTPUT_BLOCK_SIZE 262144 |
| 78 | |
| 79 | #ifdef VITA |
| 80 | // apparently Vita has a 16MB limit, so either we cut tc in half, |
| 81 | // or use this hack (it's a hack because tc size was designed to be power-of-2) |
| 82 | #define TC_REDUCE_BYTES 4096 |
| 83 | #else |
| 84 | #define TC_REDUCE_BYTES 0 |
| 85 | #endif |
| 86 | |
| 87 | struct ndrc_mem |
| 88 | { |
| 89 | u_char translation_cache[(1 << TARGET_SIZE_2) - TC_REDUCE_BYTES]; |
| 90 | struct |
| 91 | { |
| 92 | struct tramp_insns ops[2048 / sizeof(struct tramp_insns)]; |
| 93 | const void *f[2048 / sizeof(void *)]; |
| 94 | } tramp; |
| 95 | }; |
| 96 | |
| 97 | #ifdef BASE_ADDR_DYNAMIC |
| 98 | static struct ndrc_mem *ndrc; |
| 99 | #else |
| 100 | static struct ndrc_mem ndrc_ __attribute__((aligned(4096))); |
| 101 | static struct ndrc_mem *ndrc = &ndrc_; |
| 102 | #endif |
| 103 | |
| 104 | // stubs |
| 105 | enum stub_type { |
| 106 | CC_STUB = 1, |
| 107 | FP_STUB = 2, |
| 108 | LOADB_STUB = 3, |
| 109 | LOADH_STUB = 4, |
| 110 | LOADW_STUB = 5, |
| 111 | LOADD_STUB = 6, |
| 112 | LOADBU_STUB = 7, |
| 113 | LOADHU_STUB = 8, |
| 114 | STOREB_STUB = 9, |
| 115 | STOREH_STUB = 10, |
| 116 | STOREW_STUB = 11, |
| 117 | STORED_STUB = 12, |
| 118 | STORELR_STUB = 13, |
| 119 | INVCODE_STUB = 14, |
| 120 | }; |
| 121 | |
| 122 | // regmap_pre[i] - regs before [i] insn starts; dirty things here that |
| 123 | // don't match .regmap will be written back |
| 124 | // [i].regmap_entry - regs that must be set up if someone jumps here |
| 125 | // [i].regmap - regs [i] insn will read/(over)write |
| 126 | // branch_regs[i].* - same as above but for branches, takes delay slot into account |
| 127 | struct regstat |
| 128 | { |
| 129 | signed char regmap_entry[HOST_REGS]; |
| 130 | signed char regmap[HOST_REGS]; |
| 131 | uint64_t wasdirty; |
| 132 | uint64_t dirty; |
| 133 | uint64_t u; |
| 134 | u_int wasconst; // before; for example 'lw r2, (r2)' wasconst is true |
| 135 | u_int isconst; // ... but isconst is false when r2 is known |
| 136 | u_int loadedconst; // host regs that have constants loaded |
| 137 | u_int waswritten; // MIPS regs that were used as store base before |
| 138 | }; |
| 139 | |
| 140 | // note: asm depends on this layout |
| 141 | struct ll_entry |
| 142 | { |
| 143 | u_int vaddr; |
| 144 | u_int reg_sv_flags; |
| 145 | void *addr; |
| 146 | struct ll_entry *next; |
| 147 | }; |
| 148 | |
| 149 | struct ht_entry |
| 150 | { |
| 151 | u_int vaddr[2]; |
| 152 | void *tcaddr[2]; |
| 153 | }; |
| 154 | |
| 155 | struct code_stub |
| 156 | { |
| 157 | enum stub_type type; |
| 158 | void *addr; |
| 159 | void *retaddr; |
| 160 | u_int a; |
| 161 | uintptr_t b; |
| 162 | uintptr_t c; |
| 163 | u_int d; |
| 164 | u_int e; |
| 165 | }; |
| 166 | |
| 167 | struct link_entry |
| 168 | { |
| 169 | void *addr; |
| 170 | u_int target; |
| 171 | u_int ext; |
| 172 | }; |
| 173 | |
| 174 | static struct decoded_insn |
| 175 | { |
| 176 | u_char itype; |
| 177 | u_char opcode; |
| 178 | u_char opcode2; |
| 179 | u_char rs1; |
| 180 | u_char rs2; |
| 181 | u_char rt1; |
| 182 | u_char rt2; |
| 183 | u_char use_lt1:1; |
| 184 | u_char bt:1; |
| 185 | u_char ooo:1; |
| 186 | u_char is_ds:1; |
| 187 | u_char is_jump:1; |
| 188 | u_char is_ujump:1; |
| 189 | u_char is_load:1; |
| 190 | u_char is_store:1; |
| 191 | } dops[MAXBLOCK]; |
| 192 | |
| 193 | // used by asm: |
| 194 | u_char *out; |
| 195 | struct ht_entry hash_table[65536] __attribute__((aligned(16))); |
| 196 | struct ll_entry *jump_in[4096] __attribute__((aligned(16))); |
| 197 | struct ll_entry *jump_dirty[4096]; |
| 198 | |
| 199 | static struct ll_entry *jump_out[4096]; |
| 200 | static u_int start; |
| 201 | static u_int *source; |
| 202 | static uint64_t gte_rs[MAXBLOCK]; // gte: 32 data and 32 ctl regs |
| 203 | static uint64_t gte_rt[MAXBLOCK]; |
| 204 | static uint64_t gte_unneeded[MAXBLOCK]; |
| 205 | static u_int smrv[32]; // speculated MIPS register values |
| 206 | static u_int smrv_strong; // mask or regs that are likely to have correct values |
| 207 | static u_int smrv_weak; // same, but somewhat less likely |
| 208 | static u_int smrv_strong_next; // same, but after current insn executes |
| 209 | static u_int smrv_weak_next; |
| 210 | static int imm[MAXBLOCK]; |
| 211 | static u_int ba[MAXBLOCK]; |
| 212 | static uint64_t unneeded_reg[MAXBLOCK]; |
| 213 | static uint64_t branch_unneeded_reg[MAXBLOCK]; |
| 214 | // see 'struct regstat' for a description |
| 215 | static signed char regmap_pre[MAXBLOCK][HOST_REGS]; |
| 216 | // contains 'real' consts at [i] insn, but may differ from what's actually |
| 217 | // loaded in host reg as 'final' value is always loaded, see get_final_value() |
| 218 | static uint32_t current_constmap[HOST_REGS]; |
| 219 | static uint32_t constmap[MAXBLOCK][HOST_REGS]; |
| 220 | static struct regstat regs[MAXBLOCK]; |
| 221 | static struct regstat branch_regs[MAXBLOCK]; |
| 222 | static signed char minimum_free_regs[MAXBLOCK]; |
| 223 | static int ccadj[MAXBLOCK]; |
| 224 | static int slen; |
| 225 | static void *instr_addr[MAXBLOCK]; |
| 226 | static struct link_entry link_addr[MAXBLOCK]; |
| 227 | static int linkcount; |
| 228 | static struct code_stub stubs[MAXBLOCK*3]; |
| 229 | static int stubcount; |
| 230 | static u_int literals[1024][2]; |
| 231 | static int literalcount; |
| 232 | static int is_delayslot; |
| 233 | static char shadow[1048576] __attribute__((aligned(16))); |
| 234 | static void *copy; |
| 235 | static int expirep; |
| 236 | static u_int stop_after_jal; |
| 237 | static u_int f1_hack; |
| 238 | |
| 239 | int new_dynarec_hacks; |
| 240 | int new_dynarec_hacks_pergame; |
| 241 | int new_dynarec_hacks_old; |
| 242 | int new_dynarec_did_compile; |
| 243 | |
| 244 | #define HACK_ENABLED(x) ((new_dynarec_hacks | new_dynarec_hacks_pergame) & (x)) |
| 245 | |
| 246 | extern int cycle_count; // ... until end of the timeslice, counts -N -> 0 |
| 247 | extern int last_count; // last absolute target, often = next_interupt |
| 248 | extern int pcaddr; |
| 249 | extern int pending_exception; |
| 250 | extern int branch_target; |
| 251 | extern uintptr_t ram_offset; |
| 252 | extern uintptr_t mini_ht[32][2]; |
| 253 | extern u_char restore_candidate[512]; |
| 254 | |
| 255 | /* registers that may be allocated */ |
| 256 | /* 1-31 gpr */ |
| 257 | #define LOREG 32 // lo |
| 258 | #define HIREG 33 // hi |
| 259 | //#define FSREG 34 // FPU status (FCSR) |
| 260 | #define CSREG 35 // Coprocessor status |
| 261 | #define CCREG 36 // Cycle count |
| 262 | #define INVCP 37 // Pointer to invalid_code |
| 263 | //#define MMREG 38 // Pointer to memory_map |
| 264 | #define ROREG 39 // ram offset (if rdram!=0x80000000) |
| 265 | #define TEMPREG 40 |
| 266 | #define FTEMP 40 // FPU temporary register |
| 267 | #define PTEMP 41 // Prefetch temporary register |
| 268 | //#define TLREG 42 // TLB mapping offset |
| 269 | #define RHASH 43 // Return address hash |
| 270 | #define RHTBL 44 // Return address hash table address |
| 271 | #define RTEMP 45 // JR/JALR address register |
| 272 | #define MAXREG 45 |
| 273 | #define AGEN1 46 // Address generation temporary register |
| 274 | //#define AGEN2 47 // Address generation temporary register |
| 275 | //#define MGEN1 48 // Maptable address generation temporary register |
| 276 | //#define MGEN2 49 // Maptable address generation temporary register |
| 277 | #define BTREG 50 // Branch target temporary register |
| 278 | |
| 279 | /* instruction types */ |
| 280 | #define NOP 0 // No operation |
| 281 | #define LOAD 1 // Load |
| 282 | #define STORE 2 // Store |
| 283 | #define LOADLR 3 // Unaligned load |
| 284 | #define STORELR 4 // Unaligned store |
| 285 | #define MOV 5 // Move |
| 286 | #define ALU 6 // Arithmetic/logic |
| 287 | #define MULTDIV 7 // Multiply/divide |
| 288 | #define SHIFT 8 // Shift by register |
| 289 | #define SHIFTIMM 9// Shift by immediate |
| 290 | #define IMM16 10 // 16-bit immediate |
| 291 | #define RJUMP 11 // Unconditional jump to register |
| 292 | #define UJUMP 12 // Unconditional jump |
| 293 | #define CJUMP 13 // Conditional branch (BEQ/BNE/BGTZ/BLEZ) |
| 294 | #define SJUMP 14 // Conditional branch (regimm format) |
| 295 | #define COP0 15 // Coprocessor 0 |
| 296 | #define COP1 16 // Coprocessor 1 |
| 297 | #define C1LS 17 // Coprocessor 1 load/store |
| 298 | //#define FJUMP 18 // Conditional branch (floating point) |
| 299 | //#define FLOAT 19 // Floating point unit |
| 300 | //#define FCONV 20 // Convert integer to float |
| 301 | //#define FCOMP 21 // Floating point compare (sets FSREG) |
| 302 | #define SYSCALL 22// SYSCALL,BREAK |
| 303 | #define OTHER 23 // Other |
| 304 | #define SPAN 24 // Branch/delay slot spans 2 pages |
| 305 | #define NI 25 // Not implemented |
| 306 | #define HLECALL 26// PCSX fake opcodes for HLE |
| 307 | #define COP2 27 // Coprocessor 2 move |
| 308 | #define C2LS 28 // Coprocessor 2 load/store |
| 309 | #define C2OP 29 // Coprocessor 2 operation |
| 310 | #define INTCALL 30// Call interpreter to handle rare corner cases |
| 311 | |
| 312 | /* branch codes */ |
| 313 | #define TAKEN 1 |
| 314 | #define NOTTAKEN 2 |
| 315 | #define NULLDS 3 |
| 316 | |
| 317 | #define DJT_1 (void *)1l // no function, just a label in assem_debug log |
| 318 | #define DJT_2 (void *)2l |
| 319 | |
| 320 | // asm linkage |
| 321 | int new_recompile_block(u_int addr); |
| 322 | void *get_addr_ht(u_int vaddr); |
| 323 | void invalidate_block(u_int block); |
| 324 | void invalidate_addr(u_int addr); |
| 325 | void remove_hash(int vaddr); |
| 326 | void dyna_linker(); |
| 327 | void dyna_linker_ds(); |
| 328 | void verify_code(); |
| 329 | void verify_code_ds(); |
| 330 | void cc_interrupt(); |
| 331 | void fp_exception(); |
| 332 | void fp_exception_ds(); |
| 333 | void jump_syscall (u_int u0, u_int u1, u_int pc); |
| 334 | void jump_syscall_ds(u_int u0, u_int u1, u_int pc); |
| 335 | void jump_break (u_int u0, u_int u1, u_int pc); |
| 336 | void jump_break_ds(u_int u0, u_int u1, u_int pc); |
| 337 | void jump_to_new_pc(); |
| 338 | void call_gteStall(); |
| 339 | void clean_blocks(u_int page); |
| 340 | void add_jump_out(u_int vaddr, void *src); |
| 341 | void new_dyna_leave(); |
| 342 | |
| 343 | // Needed by assembler |
| 344 | static void wb_register(signed char r, const signed char regmap[], uint64_t dirty); |
| 345 | static void wb_dirtys(const signed char i_regmap[], uint64_t i_dirty); |
| 346 | static void wb_needed_dirtys(const signed char i_regmap[], uint64_t i_dirty, int addr); |
| 347 | static void load_all_regs(const signed char i_regmap[]); |
| 348 | static void load_needed_regs(const signed char i_regmap[], const signed char next_regmap[]); |
| 349 | static void load_regs_entry(int t); |
| 350 | static void load_all_consts(const signed char regmap[], u_int dirty, int i); |
| 351 | static u_int get_host_reglist(const signed char *regmap); |
| 352 | |
| 353 | static int verify_dirty(const u_int *ptr); |
| 354 | static int get_final_value(int hr, int i, int *value); |
| 355 | static void add_stub(enum stub_type type, void *addr, void *retaddr, |
| 356 | u_int a, uintptr_t b, uintptr_t c, u_int d, u_int e); |
| 357 | static void add_stub_r(enum stub_type type, void *addr, void *retaddr, |
| 358 | int i, int addr_reg, const struct regstat *i_regs, int ccadj, u_int reglist); |
| 359 | static void add_to_linker(void *addr, u_int target, int ext); |
| 360 | static void *emit_fastpath_cmp_jump(int i, const struct regstat *i_regs, |
| 361 | int addr, int *offset_reg, int *addr_reg_override); |
| 362 | static void *get_direct_memhandler(void *table, u_int addr, |
| 363 | enum stub_type type, uintptr_t *addr_host); |
| 364 | static void cop2_do_stall_check(u_int op, int i, const struct regstat *i_regs, u_int reglist); |
| 365 | static void pass_args(int a0, int a1); |
| 366 | static void emit_far_jump(const void *f); |
| 367 | static void emit_far_call(const void *f); |
| 368 | |
| 369 | #ifdef VITA |
| 370 | #include <psp2/kernel/sysmem.h> |
| 371 | static int sceBlock; |
| 372 | // note: this interacts with RetroArch's Vita bootstrap code: bootstrap/vita/sbrk.c |
| 373 | extern int getVMBlock(); |
| 374 | int _newlib_vm_size_user = sizeof(*ndrc); |
| 375 | #endif |
| 376 | |
| 377 | static void mprotect_w_x(void *start, void *end, int is_x) |
| 378 | { |
| 379 | #ifdef NO_WRITE_EXEC |
| 380 | #if defined(VITA) |
| 381 | // *Open* enables write on all memory that was |
| 382 | // allocated by sceKernelAllocMemBlockForVM()? |
| 383 | if (is_x) |
| 384 | sceKernelCloseVMDomain(); |
| 385 | else |
| 386 | sceKernelOpenVMDomain(); |
| 387 | #else |
| 388 | u_long mstart = (u_long)start & ~4095ul; |
| 389 | u_long mend = (u_long)end; |
| 390 | if (mprotect((void *)mstart, mend - mstart, |
| 391 | PROT_READ | (is_x ? PROT_EXEC : PROT_WRITE)) != 0) |
| 392 | SysPrintf("mprotect(%c) failed: %s\n", is_x ? 'x' : 'w', strerror(errno)); |
| 393 | #endif |
| 394 | #endif |
| 395 | } |
| 396 | |
| 397 | static void start_tcache_write(void *start, void *end) |
| 398 | { |
| 399 | mprotect_w_x(start, end, 0); |
| 400 | } |
| 401 | |
| 402 | static void end_tcache_write(void *start, void *end) |
| 403 | { |
| 404 | #if defined(__arm__) || defined(__aarch64__) |
| 405 | size_t len = (char *)end - (char *)start; |
| 406 | #if defined(__BLACKBERRY_QNX__) |
| 407 | msync(start, len, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE); |
| 408 | #elif defined(__MACH__) |
| 409 | sys_cache_control(kCacheFunctionPrepareForExecution, start, len); |
| 410 | #elif defined(VITA) |
| 411 | sceKernelSyncVMDomain(sceBlock, start, len); |
| 412 | #elif defined(_3DS) |
| 413 | ctr_flush_invalidate_cache(); |
| 414 | #elif defined(__aarch64__) |
| 415 | // as of 2021, __clear_cache() is still broken on arm64 |
| 416 | // so here is a custom one :( |
| 417 | clear_cache_arm64(start, end); |
| 418 | #else |
| 419 | __clear_cache(start, end); |
| 420 | #endif |
| 421 | (void)len; |
| 422 | #endif |
| 423 | |
| 424 | mprotect_w_x(start, end, 1); |
| 425 | } |
| 426 | |
| 427 | static void *start_block(void) |
| 428 | { |
| 429 | u_char *end = out + MAX_OUTPUT_BLOCK_SIZE; |
| 430 | if (end > ndrc->translation_cache + sizeof(ndrc->translation_cache)) |
| 431 | end = ndrc->translation_cache + sizeof(ndrc->translation_cache); |
| 432 | start_tcache_write(out, end); |
| 433 | return out; |
| 434 | } |
| 435 | |
| 436 | static void end_block(void *start) |
| 437 | { |
| 438 | end_tcache_write(start, out); |
| 439 | } |
| 440 | |
| 441 | // also takes care of w^x mappings when patching code |
| 442 | static u_int needs_clear_cache[1<<(TARGET_SIZE_2-17)]; |
| 443 | |
| 444 | static void mark_clear_cache(void *target) |
| 445 | { |
| 446 | uintptr_t offset = (u_char *)target - ndrc->translation_cache; |
| 447 | u_int mask = 1u << ((offset >> 12) & 31); |
| 448 | if (!(needs_clear_cache[offset >> 17] & mask)) { |
| 449 | char *start = (char *)((uintptr_t)target & ~4095l); |
| 450 | start_tcache_write(start, start + 4095); |
| 451 | needs_clear_cache[offset >> 17] |= mask; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | // Clearing the cache is rather slow on ARM Linux, so mark the areas |
| 456 | // that need to be cleared, and then only clear these areas once. |
| 457 | static void do_clear_cache(void) |
| 458 | { |
| 459 | int i, j; |
| 460 | for (i = 0; i < (1<<(TARGET_SIZE_2-17)); i++) |
| 461 | { |
| 462 | u_int bitmap = needs_clear_cache[i]; |
| 463 | if (!bitmap) |
| 464 | continue; |
| 465 | for (j = 0; j < 32; j++) |
| 466 | { |
| 467 | u_char *start, *end; |
| 468 | if (!(bitmap & (1<<j))) |
| 469 | continue; |
| 470 | |
| 471 | start = ndrc->translation_cache + i*131072 + j*4096; |
| 472 | end = start + 4095; |
| 473 | for (j++; j < 32; j++) { |
| 474 | if (!(bitmap & (1<<j))) |
| 475 | break; |
| 476 | end += 4096; |
| 477 | } |
| 478 | end_tcache_write(start, end); |
| 479 | } |
| 480 | needs_clear_cache[i] = 0; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | //#define DEBUG_CYCLE_COUNT 1 |
| 485 | |
| 486 | #define NO_CYCLE_PENALTY_THR 12 |
| 487 | |
| 488 | int cycle_multiplier = CYCLE_MULT_DEFAULT; // 100 for 1.0 |
| 489 | int cycle_multiplier_override; |
| 490 | int cycle_multiplier_old; |
| 491 | static int cycle_multiplier_active; |
| 492 | |
| 493 | static int CLOCK_ADJUST(int x) |
| 494 | { |
| 495 | int m = cycle_multiplier_active; |
| 496 | int s = (x >> 31) | 1; |
| 497 | return (x * m + s * 50) / 100; |
| 498 | } |
| 499 | |
| 500 | static int ds_writes_rjump_rs(int i) |
| 501 | { |
| 502 | return dops[i].rs1 != 0 && (dops[i].rs1 == dops[i+1].rt1 || dops[i].rs1 == dops[i+1].rt2); |
| 503 | } |
| 504 | |
| 505 | static u_int get_page(u_int vaddr) |
| 506 | { |
| 507 | u_int page=vaddr&~0xe0000000; |
| 508 | if (page < 0x1000000) |
| 509 | page &= ~0x0e00000; // RAM mirrors |
| 510 | page>>=12; |
| 511 | if(page>2048) page=2048+(page&2047); |
| 512 | return page; |
| 513 | } |
| 514 | |
| 515 | // no virtual mem in PCSX |
| 516 | static u_int get_vpage(u_int vaddr) |
| 517 | { |
| 518 | return get_page(vaddr); |
| 519 | } |
| 520 | |
| 521 | static struct ht_entry *hash_table_get(u_int vaddr) |
| 522 | { |
| 523 | return &hash_table[((vaddr>>16)^vaddr)&0xFFFF]; |
| 524 | } |
| 525 | |
| 526 | static void hash_table_add(struct ht_entry *ht_bin, u_int vaddr, void *tcaddr) |
| 527 | { |
| 528 | ht_bin->vaddr[1] = ht_bin->vaddr[0]; |
| 529 | ht_bin->tcaddr[1] = ht_bin->tcaddr[0]; |
| 530 | ht_bin->vaddr[0] = vaddr; |
| 531 | ht_bin->tcaddr[0] = tcaddr; |
| 532 | } |
| 533 | |
| 534 | // some messy ari64's code, seems to rely on unsigned 32bit overflow |
| 535 | static int doesnt_expire_soon(void *tcaddr) |
| 536 | { |
| 537 | u_int diff = (u_int)((u_char *)tcaddr - out) << (32-TARGET_SIZE_2); |
| 538 | return diff > (u_int)(0x60000000 + (MAX_OUTPUT_BLOCK_SIZE << (32-TARGET_SIZE_2))); |
| 539 | } |
| 540 | |
| 541 | // Get address from virtual address |
| 542 | // This is called from the recompiled JR/JALR instructions |
| 543 | void noinline *get_addr(u_int vaddr) |
| 544 | { |
| 545 | u_int page=get_page(vaddr); |
| 546 | u_int vpage=get_vpage(vaddr); |
| 547 | struct ll_entry *head; |
| 548 | //printf("TRACE: count=%d next=%d (get_addr %x,page %d)\n",Count,next_interupt,vaddr,page); |
| 549 | head=jump_in[page]; |
| 550 | while(head!=NULL) { |
| 551 | if(head->vaddr==vaddr) { |
| 552 | //printf("TRACE: count=%d next=%d (get_addr match %x: %p)\n",Count,next_interupt,vaddr,head->addr); |
| 553 | hash_table_add(hash_table_get(vaddr), vaddr, head->addr); |
| 554 | return head->addr; |
| 555 | } |
| 556 | head=head->next; |
| 557 | } |
| 558 | head=jump_dirty[vpage]; |
| 559 | while(head!=NULL) { |
| 560 | if(head->vaddr==vaddr) { |
| 561 | //printf("TRACE: count=%d next=%d (get_addr match dirty %x: %p)\n",Count,next_interupt,vaddr,head->addr); |
| 562 | // Don't restore blocks which are about to expire from the cache |
| 563 | if (doesnt_expire_soon(head->addr)) |
| 564 | if (verify_dirty(head->addr)) { |
| 565 | //printf("restore candidate: %x (%d) d=%d\n",vaddr,page,invalid_code[vaddr>>12]); |
| 566 | invalid_code[vaddr>>12]=0; |
| 567 | inv_code_start=inv_code_end=~0; |
| 568 | if(vpage<2048) { |
| 569 | restore_candidate[vpage>>3]|=1<<(vpage&7); |
| 570 | } |
| 571 | else restore_candidate[page>>3]|=1<<(page&7); |
| 572 | struct ht_entry *ht_bin = hash_table_get(vaddr); |
| 573 | if (ht_bin->vaddr[0] == vaddr) |
| 574 | ht_bin->tcaddr[0] = head->addr; // Replace existing entry |
| 575 | else |
| 576 | hash_table_add(ht_bin, vaddr, head->addr); |
| 577 | |
| 578 | return head->addr; |
| 579 | } |
| 580 | } |
| 581 | head=head->next; |
| 582 | } |
| 583 | //printf("TRACE: count=%d next=%d (get_addr no-match %x)\n",Count,next_interupt,vaddr); |
| 584 | int r=new_recompile_block(vaddr); |
| 585 | if(r==0) return get_addr(vaddr); |
| 586 | // generate an address error |
| 587 | Status|=2; |
| 588 | Cause=(vaddr<<31)|(4<<2); |
| 589 | EPC=(vaddr&1)?vaddr-5:vaddr; |
| 590 | BadVAddr=(vaddr&~1); |
| 591 | return get_addr_ht(0x80000080); |
| 592 | } |
| 593 | // Look up address in hash table first |
| 594 | void *get_addr_ht(u_int vaddr) |
| 595 | { |
| 596 | //printf("TRACE: count=%d next=%d (get_addr_ht %x)\n",Count,next_interupt,vaddr); |
| 597 | const struct ht_entry *ht_bin = hash_table_get(vaddr); |
| 598 | if (ht_bin->vaddr[0] == vaddr) return ht_bin->tcaddr[0]; |
| 599 | if (ht_bin->vaddr[1] == vaddr) return ht_bin->tcaddr[1]; |
| 600 | return get_addr(vaddr); |
| 601 | } |
| 602 | |
| 603 | static void clear_all_regs(signed char regmap[]) |
| 604 | { |
| 605 | memset(regmap, -1, sizeof(regmap[0]) * HOST_REGS); |
| 606 | } |
| 607 | |
| 608 | // get_reg: get allocated host reg from mips reg |
| 609 | // returns -1 if no such mips reg was allocated |
| 610 | #if defined(__arm__) && defined(HAVE_ARMV6) && HOST_REGS == 13 && EXCLUDE_REG == 11 |
| 611 | |
| 612 | extern signed char get_reg(const signed char regmap[], signed char r); |
| 613 | |
| 614 | #else |
| 615 | |
| 616 | static signed char get_reg(const signed char regmap[], signed char r) |
| 617 | { |
| 618 | int hr; |
| 619 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 620 | if (hr == EXCLUDE_REG) |
| 621 | continue; |
| 622 | if (regmap[hr] == r) |
| 623 | return hr; |
| 624 | } |
| 625 | return -1; |
| 626 | } |
| 627 | |
| 628 | #endif |
| 629 | |
| 630 | // get reg as mask bit (1 << hr) |
| 631 | static u_int get_regm(const signed char regmap[], signed char r) |
| 632 | { |
| 633 | return (1u << (get_reg(regmap, r) & 31)) & ~(1u << 31); |
| 634 | } |
| 635 | |
| 636 | static signed char get_reg_temp(const signed char regmap[]) |
| 637 | { |
| 638 | int hr; |
| 639 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 640 | if (hr == EXCLUDE_REG) |
| 641 | continue; |
| 642 | if (regmap[hr] == (signed char)-1) |
| 643 | return hr; |
| 644 | } |
| 645 | return -1; |
| 646 | } |
| 647 | |
| 648 | // Find a register that is available for two consecutive cycles |
| 649 | static signed char get_reg2(signed char regmap1[], const signed char regmap2[], int r) |
| 650 | { |
| 651 | int hr; |
| 652 | for (hr=0;hr<HOST_REGS;hr++) if(hr!=EXCLUDE_REG&®map1[hr]==r&®map2[hr]==r) return hr; |
| 653 | return -1; |
| 654 | } |
| 655 | |
| 656 | // reverse reg map: mips -> host |
| 657 | #define RRMAP_SIZE 64 |
| 658 | static void make_rregs(const signed char regmap[], signed char rrmap[RRMAP_SIZE], |
| 659 | u_int *regs_can_change) |
| 660 | { |
| 661 | u_int r, hr, hr_can_change = 0; |
| 662 | memset(rrmap, -1, RRMAP_SIZE); |
| 663 | for (hr = 0; hr < HOST_REGS; ) |
| 664 | { |
| 665 | r = regmap[hr]; |
| 666 | rrmap[r & (RRMAP_SIZE - 1)] = hr; |
| 667 | // only add mips $1-$31+$lo, others shifted out |
| 668 | hr_can_change |= (uint64_t)1 << (hr + ((r - 1) & 32)); |
| 669 | hr++; |
| 670 | if (hr == EXCLUDE_REG) |
| 671 | hr++; |
| 672 | } |
| 673 | hr_can_change |= 1u << (rrmap[33] & 31); |
| 674 | hr_can_change |= 1u << (rrmap[CCREG] & 31); |
| 675 | hr_can_change &= ~(1u << 31); |
| 676 | *regs_can_change = hr_can_change; |
| 677 | } |
| 678 | |
| 679 | // same as get_reg, but takes rrmap |
| 680 | static signed char get_rreg(signed char rrmap[RRMAP_SIZE], signed char r) |
| 681 | { |
| 682 | assert(0 <= r && r < RRMAP_SIZE); |
| 683 | return rrmap[r]; |
| 684 | } |
| 685 | |
| 686 | static int count_free_regs(const signed char regmap[]) |
| 687 | { |
| 688 | int count=0; |
| 689 | int hr; |
| 690 | for(hr=0;hr<HOST_REGS;hr++) |
| 691 | { |
| 692 | if(hr!=EXCLUDE_REG) { |
| 693 | if(regmap[hr]<0) count++; |
| 694 | } |
| 695 | } |
| 696 | return count; |
| 697 | } |
| 698 | |
| 699 | static void dirty_reg(struct regstat *cur, signed char reg) |
| 700 | { |
| 701 | int hr; |
| 702 | if (!reg) return; |
| 703 | hr = get_reg(cur->regmap, reg); |
| 704 | if (hr >= 0) |
| 705 | cur->dirty |= 1<<hr; |
| 706 | } |
| 707 | |
| 708 | static void set_const(struct regstat *cur, signed char reg, uint32_t value) |
| 709 | { |
| 710 | int hr; |
| 711 | if (!reg) return; |
| 712 | hr = get_reg(cur->regmap, reg); |
| 713 | if (hr >= 0) { |
| 714 | cur->isconst |= 1<<hr; |
| 715 | current_constmap[hr] = value; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | static void clear_const(struct regstat *cur, signed char reg) |
| 720 | { |
| 721 | int hr; |
| 722 | if (!reg) return; |
| 723 | hr = get_reg(cur->regmap, reg); |
| 724 | if (hr >= 0) |
| 725 | cur->isconst &= ~(1<<hr); |
| 726 | } |
| 727 | |
| 728 | static int is_const(const struct regstat *cur, signed char reg) |
| 729 | { |
| 730 | int hr; |
| 731 | if (reg < 0) return 0; |
| 732 | if (!reg) return 1; |
| 733 | hr = get_reg(cur->regmap, reg); |
| 734 | if (hr >= 0) |
| 735 | return (cur->isconst>>hr)&1; |
| 736 | return 0; |
| 737 | } |
| 738 | |
| 739 | static uint32_t get_const(const struct regstat *cur, signed char reg) |
| 740 | { |
| 741 | int hr; |
| 742 | if (!reg) return 0; |
| 743 | hr = get_reg(cur->regmap, reg); |
| 744 | if (hr >= 0) |
| 745 | return current_constmap[hr]; |
| 746 | |
| 747 | SysPrintf("Unknown constant in r%d\n", reg); |
| 748 | abort(); |
| 749 | } |
| 750 | |
| 751 | // Least soon needed registers |
| 752 | // Look at the next ten instructions and see which registers |
| 753 | // will be used. Try not to reallocate these. |
| 754 | static void lsn(u_char hsn[], int i, int *preferred_reg) |
| 755 | { |
| 756 | int j; |
| 757 | int b=-1; |
| 758 | for(j=0;j<9;j++) |
| 759 | { |
| 760 | if(i+j>=slen) { |
| 761 | j=slen-i-1; |
| 762 | break; |
| 763 | } |
| 764 | if (dops[i+j].is_ujump) |
| 765 | { |
| 766 | // Don't go past an unconditonal jump |
| 767 | j++; |
| 768 | break; |
| 769 | } |
| 770 | } |
| 771 | for(;j>=0;j--) |
| 772 | { |
| 773 | if(dops[i+j].rs1) hsn[dops[i+j].rs1]=j; |
| 774 | if(dops[i+j].rs2) hsn[dops[i+j].rs2]=j; |
| 775 | if(dops[i+j].rt1) hsn[dops[i+j].rt1]=j; |
| 776 | if(dops[i+j].rt2) hsn[dops[i+j].rt2]=j; |
| 777 | if(dops[i+j].itype==STORE || dops[i+j].itype==STORELR) { |
| 778 | // Stores can allocate zero |
| 779 | hsn[dops[i+j].rs1]=j; |
| 780 | hsn[dops[i+j].rs2]=j; |
| 781 | } |
| 782 | if (ram_offset && (dops[i+j].is_load || dops[i+j].is_store)) |
| 783 | hsn[ROREG] = j; |
| 784 | // On some architectures stores need invc_ptr |
| 785 | #if defined(HOST_IMM8) |
| 786 | if (dops[i+j].is_store) |
| 787 | hsn[INVCP] = j; |
| 788 | #endif |
| 789 | if(i+j>=0&&(dops[i+j].itype==UJUMP||dops[i+j].itype==CJUMP||dops[i+j].itype==SJUMP)) |
| 790 | { |
| 791 | hsn[CCREG]=j; |
| 792 | b=j; |
| 793 | } |
| 794 | } |
| 795 | if(b>=0) |
| 796 | { |
| 797 | if(ba[i+b]>=start && ba[i+b]<(start+slen*4)) |
| 798 | { |
| 799 | // Follow first branch |
| 800 | int t=(ba[i+b]-start)>>2; |
| 801 | j=7-b;if(t+j>=slen) j=slen-t-1; |
| 802 | for(;j>=0;j--) |
| 803 | { |
| 804 | if(dops[t+j].rs1) if(hsn[dops[t+j].rs1]>j+b+2) hsn[dops[t+j].rs1]=j+b+2; |
| 805 | if(dops[t+j].rs2) if(hsn[dops[t+j].rs2]>j+b+2) hsn[dops[t+j].rs2]=j+b+2; |
| 806 | //if(dops[t+j].rt1) if(hsn[dops[t+j].rt1]>j+b+2) hsn[dops[t+j].rt1]=j+b+2; |
| 807 | //if(dops[t+j].rt2) if(hsn[dops[t+j].rt2]>j+b+2) hsn[dops[t+j].rt2]=j+b+2; |
| 808 | } |
| 809 | } |
| 810 | // TODO: preferred register based on backward branch |
| 811 | } |
| 812 | // Delay slot should preferably not overwrite branch conditions or cycle count |
| 813 | if (i > 0 && dops[i-1].is_jump) { |
| 814 | if(dops[i-1].rs1) if(hsn[dops[i-1].rs1]>1) hsn[dops[i-1].rs1]=1; |
| 815 | if(dops[i-1].rs2) if(hsn[dops[i-1].rs2]>1) hsn[dops[i-1].rs2]=1; |
| 816 | hsn[CCREG]=1; |
| 817 | // ...or hash tables |
| 818 | hsn[RHASH]=1; |
| 819 | hsn[RHTBL]=1; |
| 820 | } |
| 821 | // Coprocessor load/store needs FTEMP, even if not declared |
| 822 | if(dops[i].itype==C2LS) { |
| 823 | hsn[FTEMP]=0; |
| 824 | } |
| 825 | // Load L/R also uses FTEMP as a temporary register |
| 826 | if(dops[i].itype==LOADLR) { |
| 827 | hsn[FTEMP]=0; |
| 828 | } |
| 829 | // Also SWL/SWR/SDL/SDR |
| 830 | if(dops[i].opcode==0x2a||dops[i].opcode==0x2e||dops[i].opcode==0x2c||dops[i].opcode==0x2d) { |
| 831 | hsn[FTEMP]=0; |
| 832 | } |
| 833 | // Don't remove the miniht registers |
| 834 | if(dops[i].itype==UJUMP||dops[i].itype==RJUMP) |
| 835 | { |
| 836 | hsn[RHASH]=0; |
| 837 | hsn[RHTBL]=0; |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | // We only want to allocate registers if we're going to use them again soon |
| 842 | static int needed_again(int r, int i) |
| 843 | { |
| 844 | int j; |
| 845 | int b=-1; |
| 846 | int rn=10; |
| 847 | |
| 848 | if (i > 0 && dops[i-1].is_ujump) |
| 849 | { |
| 850 | if(ba[i-1]<start || ba[i-1]>start+slen*4-4) |
| 851 | return 0; // Don't need any registers if exiting the block |
| 852 | } |
| 853 | for(j=0;j<9;j++) |
| 854 | { |
| 855 | if(i+j>=slen) { |
| 856 | j=slen-i-1; |
| 857 | break; |
| 858 | } |
| 859 | if (dops[i+j].is_ujump) |
| 860 | { |
| 861 | // Don't go past an unconditonal jump |
| 862 | j++; |
| 863 | break; |
| 864 | } |
| 865 | if(dops[i+j].itype==SYSCALL||dops[i+j].itype==HLECALL||dops[i+j].itype==INTCALL||((source[i+j]&0xfc00003f)==0x0d)) |
| 866 | { |
| 867 | break; |
| 868 | } |
| 869 | } |
| 870 | for(;j>=1;j--) |
| 871 | { |
| 872 | if(dops[i+j].rs1==r) rn=j; |
| 873 | if(dops[i+j].rs2==r) rn=j; |
| 874 | if((unneeded_reg[i+j]>>r)&1) rn=10; |
| 875 | if(i+j>=0&&(dops[i+j].itype==UJUMP||dops[i+j].itype==CJUMP||dops[i+j].itype==SJUMP)) |
| 876 | { |
| 877 | b=j; |
| 878 | } |
| 879 | } |
| 880 | if(rn<10) return 1; |
| 881 | (void)b; |
| 882 | return 0; |
| 883 | } |
| 884 | |
| 885 | // Try to match register allocations at the end of a loop with those |
| 886 | // at the beginning |
| 887 | static int loop_reg(int i, int r, int hr) |
| 888 | { |
| 889 | int j,k; |
| 890 | for(j=0;j<9;j++) |
| 891 | { |
| 892 | if(i+j>=slen) { |
| 893 | j=slen-i-1; |
| 894 | break; |
| 895 | } |
| 896 | if (dops[i+j].is_ujump) |
| 897 | { |
| 898 | // Don't go past an unconditonal jump |
| 899 | j++; |
| 900 | break; |
| 901 | } |
| 902 | } |
| 903 | k=0; |
| 904 | if(i>0){ |
| 905 | if(dops[i-1].itype==UJUMP||dops[i-1].itype==CJUMP||dops[i-1].itype==SJUMP) |
| 906 | k--; |
| 907 | } |
| 908 | for(;k<j;k++) |
| 909 | { |
| 910 | assert(r < 64); |
| 911 | if((unneeded_reg[i+k]>>r)&1) return hr; |
| 912 | if(i+k>=0&&(dops[i+k].itype==UJUMP||dops[i+k].itype==CJUMP||dops[i+k].itype==SJUMP)) |
| 913 | { |
| 914 | if(ba[i+k]>=start && ba[i+k]<(start+i*4)) |
| 915 | { |
| 916 | int t=(ba[i+k]-start)>>2; |
| 917 | int reg=get_reg(regs[t].regmap_entry,r); |
| 918 | if(reg>=0) return reg; |
| 919 | //reg=get_reg(regs[t+1].regmap_entry,r); |
| 920 | //if(reg>=0) return reg; |
| 921 | } |
| 922 | } |
| 923 | } |
| 924 | return hr; |
| 925 | } |
| 926 | |
| 927 | |
| 928 | // Allocate every register, preserving source/target regs |
| 929 | static void alloc_all(struct regstat *cur,int i) |
| 930 | { |
| 931 | int hr; |
| 932 | |
| 933 | for(hr=0;hr<HOST_REGS;hr++) { |
| 934 | if(hr!=EXCLUDE_REG) { |
| 935 | if((cur->regmap[hr]!=dops[i].rs1)&&(cur->regmap[hr]!=dops[i].rs2)&& |
| 936 | (cur->regmap[hr]!=dops[i].rt1)&&(cur->regmap[hr]!=dops[i].rt2)) |
| 937 | { |
| 938 | cur->regmap[hr]=-1; |
| 939 | cur->dirty&=~(1<<hr); |
| 940 | } |
| 941 | // Don't need zeros |
| 942 | if(cur->regmap[hr]==0) |
| 943 | { |
| 944 | cur->regmap[hr]=-1; |
| 945 | cur->dirty&=~(1<<hr); |
| 946 | } |
| 947 | } |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | #ifndef NDEBUG |
| 952 | static int host_tempreg_in_use; |
| 953 | |
| 954 | static void host_tempreg_acquire(void) |
| 955 | { |
| 956 | assert(!host_tempreg_in_use); |
| 957 | host_tempreg_in_use = 1; |
| 958 | } |
| 959 | |
| 960 | static void host_tempreg_release(void) |
| 961 | { |
| 962 | host_tempreg_in_use = 0; |
| 963 | } |
| 964 | #else |
| 965 | static void host_tempreg_acquire(void) {} |
| 966 | static void host_tempreg_release(void) {} |
| 967 | #endif |
| 968 | |
| 969 | #ifdef ASSEM_PRINT |
| 970 | extern void gen_interupt(); |
| 971 | extern void do_insn_cmp(); |
| 972 | #define FUNCNAME(f) { f, " " #f } |
| 973 | static const struct { |
| 974 | void *addr; |
| 975 | const char *name; |
| 976 | } function_names[] = { |
| 977 | FUNCNAME(cc_interrupt), |
| 978 | FUNCNAME(gen_interupt), |
| 979 | FUNCNAME(get_addr_ht), |
| 980 | FUNCNAME(get_addr), |
| 981 | FUNCNAME(jump_handler_read8), |
| 982 | FUNCNAME(jump_handler_read16), |
| 983 | FUNCNAME(jump_handler_read32), |
| 984 | FUNCNAME(jump_handler_write8), |
| 985 | FUNCNAME(jump_handler_write16), |
| 986 | FUNCNAME(jump_handler_write32), |
| 987 | FUNCNAME(invalidate_addr), |
| 988 | FUNCNAME(jump_to_new_pc), |
| 989 | FUNCNAME(jump_break), |
| 990 | FUNCNAME(jump_break_ds), |
| 991 | FUNCNAME(jump_syscall), |
| 992 | FUNCNAME(jump_syscall_ds), |
| 993 | FUNCNAME(call_gteStall), |
| 994 | FUNCNAME(clean_blocks), |
| 995 | FUNCNAME(new_dyna_leave), |
| 996 | FUNCNAME(pcsx_mtc0), |
| 997 | FUNCNAME(pcsx_mtc0_ds), |
| 998 | #ifdef DRC_DBG |
| 999 | FUNCNAME(do_insn_cmp), |
| 1000 | #endif |
| 1001 | #ifdef __arm__ |
| 1002 | FUNCNAME(verify_code), |
| 1003 | #endif |
| 1004 | }; |
| 1005 | |
| 1006 | static const char *func_name(const void *a) |
| 1007 | { |
| 1008 | int i; |
| 1009 | for (i = 0; i < sizeof(function_names)/sizeof(function_names[0]); i++) |
| 1010 | if (function_names[i].addr == a) |
| 1011 | return function_names[i].name; |
| 1012 | return ""; |
| 1013 | } |
| 1014 | #else |
| 1015 | #define func_name(x) "" |
| 1016 | #endif |
| 1017 | |
| 1018 | #ifdef __i386__ |
| 1019 | #include "assem_x86.c" |
| 1020 | #endif |
| 1021 | #ifdef __x86_64__ |
| 1022 | #include "assem_x64.c" |
| 1023 | #endif |
| 1024 | #ifdef __arm__ |
| 1025 | #include "assem_arm.c" |
| 1026 | #endif |
| 1027 | #ifdef __aarch64__ |
| 1028 | #include "assem_arm64.c" |
| 1029 | #endif |
| 1030 | |
| 1031 | static void *get_trampoline(const void *f) |
| 1032 | { |
| 1033 | size_t i; |
| 1034 | |
| 1035 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.f); i++) { |
| 1036 | if (ndrc->tramp.f[i] == f || ndrc->tramp.f[i] == NULL) |
| 1037 | break; |
| 1038 | } |
| 1039 | if (i == ARRAY_SIZE(ndrc->tramp.f)) { |
| 1040 | SysPrintf("trampoline table is full, last func %p\n", f); |
| 1041 | abort(); |
| 1042 | } |
| 1043 | if (ndrc->tramp.f[i] == NULL) { |
| 1044 | start_tcache_write(&ndrc->tramp.f[i], &ndrc->tramp.f[i + 1]); |
| 1045 | ndrc->tramp.f[i] = f; |
| 1046 | end_tcache_write(&ndrc->tramp.f[i], &ndrc->tramp.f[i + 1]); |
| 1047 | } |
| 1048 | return &ndrc->tramp.ops[i]; |
| 1049 | } |
| 1050 | |
| 1051 | static void emit_far_jump(const void *f) |
| 1052 | { |
| 1053 | if (can_jump_or_call(f)) { |
| 1054 | emit_jmp(f); |
| 1055 | return; |
| 1056 | } |
| 1057 | |
| 1058 | f = get_trampoline(f); |
| 1059 | emit_jmp(f); |
| 1060 | } |
| 1061 | |
| 1062 | static void emit_far_call(const void *f) |
| 1063 | { |
| 1064 | if (can_jump_or_call(f)) { |
| 1065 | emit_call(f); |
| 1066 | return; |
| 1067 | } |
| 1068 | |
| 1069 | f = get_trampoline(f); |
| 1070 | emit_call(f); |
| 1071 | } |
| 1072 | |
| 1073 | // Add virtual address mapping to linked list |
| 1074 | static void ll_add(struct ll_entry **head,int vaddr,void *addr) |
| 1075 | { |
| 1076 | struct ll_entry *new_entry; |
| 1077 | new_entry=malloc(sizeof(struct ll_entry)); |
| 1078 | assert(new_entry!=NULL); |
| 1079 | new_entry->vaddr=vaddr; |
| 1080 | new_entry->reg_sv_flags=0; |
| 1081 | new_entry->addr=addr; |
| 1082 | new_entry->next=*head; |
| 1083 | *head=new_entry; |
| 1084 | } |
| 1085 | |
| 1086 | static void ll_add_flags(struct ll_entry **head,int vaddr,u_int reg_sv_flags,void *addr) |
| 1087 | { |
| 1088 | ll_add(head,vaddr,addr); |
| 1089 | (*head)->reg_sv_flags=reg_sv_flags; |
| 1090 | } |
| 1091 | |
| 1092 | // Check if an address is already compiled |
| 1093 | // but don't return addresses which are about to expire from the cache |
| 1094 | static void *check_addr(u_int vaddr) |
| 1095 | { |
| 1096 | struct ht_entry *ht_bin = hash_table_get(vaddr); |
| 1097 | size_t i; |
| 1098 | for (i = 0; i < ARRAY_SIZE(ht_bin->vaddr); i++) { |
| 1099 | if (ht_bin->vaddr[i] == vaddr) |
| 1100 | if (doesnt_expire_soon((u_char *)ht_bin->tcaddr[i] - MAX_OUTPUT_BLOCK_SIZE)) |
| 1101 | if (isclean(ht_bin->tcaddr[i])) |
| 1102 | return ht_bin->tcaddr[i]; |
| 1103 | } |
| 1104 | u_int page=get_page(vaddr); |
| 1105 | struct ll_entry *head; |
| 1106 | head=jump_in[page]; |
| 1107 | while (head != NULL) { |
| 1108 | if (head->vaddr == vaddr) { |
| 1109 | if (doesnt_expire_soon(head->addr)) { |
| 1110 | // Update existing entry with current address |
| 1111 | if (ht_bin->vaddr[0] == vaddr) { |
| 1112 | ht_bin->tcaddr[0] = head->addr; |
| 1113 | return head->addr; |
| 1114 | } |
| 1115 | if (ht_bin->vaddr[1] == vaddr) { |
| 1116 | ht_bin->tcaddr[1] = head->addr; |
| 1117 | return head->addr; |
| 1118 | } |
| 1119 | // Insert into hash table with low priority. |
| 1120 | // Don't evict existing entries, as they are probably |
| 1121 | // addresses that are being accessed frequently. |
| 1122 | if (ht_bin->vaddr[0] == -1) { |
| 1123 | ht_bin->vaddr[0] = vaddr; |
| 1124 | ht_bin->tcaddr[0] = head->addr; |
| 1125 | } |
| 1126 | else if (ht_bin->vaddr[1] == -1) { |
| 1127 | ht_bin->vaddr[1] = vaddr; |
| 1128 | ht_bin->tcaddr[1] = head->addr; |
| 1129 | } |
| 1130 | return head->addr; |
| 1131 | } |
| 1132 | } |
| 1133 | head=head->next; |
| 1134 | } |
| 1135 | return 0; |
| 1136 | } |
| 1137 | |
| 1138 | void remove_hash(int vaddr) |
| 1139 | { |
| 1140 | //printf("remove hash: %x\n",vaddr); |
| 1141 | struct ht_entry *ht_bin = hash_table_get(vaddr); |
| 1142 | if (ht_bin->vaddr[1] == vaddr) { |
| 1143 | ht_bin->vaddr[1] = -1; |
| 1144 | ht_bin->tcaddr[1] = NULL; |
| 1145 | } |
| 1146 | if (ht_bin->vaddr[0] == vaddr) { |
| 1147 | ht_bin->vaddr[0] = ht_bin->vaddr[1]; |
| 1148 | ht_bin->tcaddr[0] = ht_bin->tcaddr[1]; |
| 1149 | ht_bin->vaddr[1] = -1; |
| 1150 | ht_bin->tcaddr[1] = NULL; |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | static void ll_remove_matching_addrs(struct ll_entry **head, |
| 1155 | uintptr_t base_offs_s, int shift) |
| 1156 | { |
| 1157 | struct ll_entry *next; |
| 1158 | while(*head) { |
| 1159 | uintptr_t o1 = (u_char *)(*head)->addr - ndrc->translation_cache; |
| 1160 | uintptr_t o2 = o1 - MAX_OUTPUT_BLOCK_SIZE; |
| 1161 | if ((o1 >> shift) == base_offs_s || (o2 >> shift) == base_offs_s) |
| 1162 | { |
| 1163 | inv_debug("EXP: Remove pointer to %p (%x)\n",(*head)->addr,(*head)->vaddr); |
| 1164 | remove_hash((*head)->vaddr); |
| 1165 | next=(*head)->next; |
| 1166 | free(*head); |
| 1167 | *head=next; |
| 1168 | } |
| 1169 | else |
| 1170 | { |
| 1171 | head=&((*head)->next); |
| 1172 | } |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | // Remove all entries from linked list |
| 1177 | static void ll_clear(struct ll_entry **head) |
| 1178 | { |
| 1179 | struct ll_entry *cur; |
| 1180 | struct ll_entry *next; |
| 1181 | if((cur=*head)) { |
| 1182 | *head=0; |
| 1183 | while(cur) { |
| 1184 | next=cur->next; |
| 1185 | free(cur); |
| 1186 | cur=next; |
| 1187 | } |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | // Dereference the pointers and remove if it matches |
| 1192 | static void ll_kill_pointers(struct ll_entry *head, |
| 1193 | uintptr_t base_offs_s, int shift) |
| 1194 | { |
| 1195 | while(head) { |
| 1196 | u_char *ptr = get_pointer(head->addr); |
| 1197 | uintptr_t o1 = ptr - ndrc->translation_cache; |
| 1198 | uintptr_t o2 = o1 - MAX_OUTPUT_BLOCK_SIZE; |
| 1199 | inv_debug("EXP: Lookup pointer to %p at %p (%x)\n",ptr,head->addr,head->vaddr); |
| 1200 | if ((o1 >> shift) == base_offs_s || (o2 >> shift) == base_offs_s) |
| 1201 | { |
| 1202 | inv_debug("EXP: Kill pointer at %p (%x)\n",head->addr,head->vaddr); |
| 1203 | void *host_addr=find_extjump_insn(head->addr); |
| 1204 | mark_clear_cache(host_addr); |
| 1205 | set_jump_target(host_addr, head->addr); |
| 1206 | } |
| 1207 | head=head->next; |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | // This is called when we write to a compiled block (see do_invstub) |
| 1212 | static void invalidate_page(u_int page) |
| 1213 | { |
| 1214 | struct ll_entry *head; |
| 1215 | struct ll_entry *next; |
| 1216 | head=jump_in[page]; |
| 1217 | jump_in[page]=0; |
| 1218 | while(head!=NULL) { |
| 1219 | inv_debug("INVALIDATE: %x\n",head->vaddr); |
| 1220 | remove_hash(head->vaddr); |
| 1221 | next=head->next; |
| 1222 | free(head); |
| 1223 | head=next; |
| 1224 | } |
| 1225 | head=jump_out[page]; |
| 1226 | jump_out[page]=0; |
| 1227 | while(head!=NULL) { |
| 1228 | inv_debug("INVALIDATE: kill pointer to %x (%p)\n",head->vaddr,head->addr); |
| 1229 | void *host_addr=find_extjump_insn(head->addr); |
| 1230 | mark_clear_cache(host_addr); |
| 1231 | set_jump_target(host_addr, head->addr); // point back to dyna_linker |
| 1232 | next=head->next; |
| 1233 | free(head); |
| 1234 | head=next; |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | static void invalidate_block_range(u_int block, u_int first, u_int last) |
| 1239 | { |
| 1240 | u_int page=get_page(block<<12); |
| 1241 | //printf("first=%d last=%d\n",first,last); |
| 1242 | invalidate_page(page); |
| 1243 | assert(first+5>page); // NB: this assumes MAXBLOCK<=4096 (4 pages) |
| 1244 | assert(last<page+5); |
| 1245 | // Invalidate the adjacent pages if a block crosses a 4K boundary |
| 1246 | while(first<page) { |
| 1247 | invalidate_page(first); |
| 1248 | first++; |
| 1249 | } |
| 1250 | for(first=page+1;first<last;first++) { |
| 1251 | invalidate_page(first); |
| 1252 | } |
| 1253 | do_clear_cache(); |
| 1254 | |
| 1255 | // Don't trap writes |
| 1256 | invalid_code[block]=1; |
| 1257 | |
| 1258 | #ifdef USE_MINI_HT |
| 1259 | memset(mini_ht,-1,sizeof(mini_ht)); |
| 1260 | #endif |
| 1261 | } |
| 1262 | |
| 1263 | void invalidate_block(u_int block) |
| 1264 | { |
| 1265 | u_int page=get_page(block<<12); |
| 1266 | u_int vpage=get_vpage(block<<12); |
| 1267 | inv_debug("INVALIDATE: %x (%d)\n",block<<12,page); |
| 1268 | //inv_debug("invalid_code[block]=%d\n",invalid_code[block]); |
| 1269 | u_int first,last; |
| 1270 | first=last=page; |
| 1271 | struct ll_entry *head; |
| 1272 | head=jump_dirty[vpage]; |
| 1273 | //printf("page=%d vpage=%d\n",page,vpage); |
| 1274 | while(head!=NULL) { |
| 1275 | if(vpage>2047||(head->vaddr>>12)==block) { // Ignore vaddr hash collision |
| 1276 | u_char *start, *end; |
| 1277 | get_bounds(head->addr, &start, &end); |
| 1278 | //printf("start: %p end: %p\n", start, end); |
| 1279 | if (page < 2048 && start >= rdram && end < rdram+RAM_SIZE) { |
| 1280 | if (((start-rdram)>>12) <= page && ((end-1-rdram)>>12) >= page) { |
| 1281 | if ((((start-rdram)>>12)&2047) < first) first = ((start-rdram)>>12)&2047; |
| 1282 | if ((((end-1-rdram)>>12)&2047) > last) last = ((end-1-rdram)>>12)&2047; |
| 1283 | } |
| 1284 | } |
| 1285 | } |
| 1286 | head=head->next; |
| 1287 | } |
| 1288 | invalidate_block_range(block,first,last); |
| 1289 | } |
| 1290 | |
| 1291 | void invalidate_addr(u_int addr) |
| 1292 | { |
| 1293 | //static int rhits; |
| 1294 | // this check is done by the caller |
| 1295 | //if (inv_code_start<=addr&&addr<=inv_code_end) { rhits++; return; } |
| 1296 | u_int page=get_vpage(addr); |
| 1297 | if(page<2048) { // RAM |
| 1298 | struct ll_entry *head; |
| 1299 | u_int addr_min=~0, addr_max=0; |
| 1300 | u_int mask=RAM_SIZE-1; |
| 1301 | u_int addr_main=0x80000000|(addr&mask); |
| 1302 | int pg1; |
| 1303 | inv_code_start=addr_main&~0xfff; |
| 1304 | inv_code_end=addr_main|0xfff; |
| 1305 | pg1=page; |
| 1306 | if (pg1>0) { |
| 1307 | // must check previous page too because of spans.. |
| 1308 | pg1--; |
| 1309 | inv_code_start-=0x1000; |
| 1310 | } |
| 1311 | for(;pg1<=page;pg1++) { |
| 1312 | for(head=jump_dirty[pg1];head!=NULL;head=head->next) { |
| 1313 | u_char *start_h, *end_h; |
| 1314 | u_int start, end; |
| 1315 | get_bounds(head->addr, &start_h, &end_h); |
| 1316 | start = (uintptr_t)start_h - ram_offset; |
| 1317 | end = (uintptr_t)end_h - ram_offset; |
| 1318 | if(start<=addr_main&&addr_main<end) { |
| 1319 | if(start<addr_min) addr_min=start; |
| 1320 | if(end>addr_max) addr_max=end; |
| 1321 | } |
| 1322 | else if(addr_main<start) { |
| 1323 | if(start<inv_code_end) |
| 1324 | inv_code_end=start-1; |
| 1325 | } |
| 1326 | else { |
| 1327 | if(end>inv_code_start) |
| 1328 | inv_code_start=end; |
| 1329 | } |
| 1330 | } |
| 1331 | } |
| 1332 | if (addr_min!=~0) { |
| 1333 | inv_debug("INV ADDR: %08x hit %08x-%08x\n", addr, addr_min, addr_max); |
| 1334 | inv_code_start=inv_code_end=~0; |
| 1335 | invalidate_block_range(addr>>12,(addr_min&mask)>>12,(addr_max&mask)>>12); |
| 1336 | return; |
| 1337 | } |
| 1338 | else { |
| 1339 | inv_code_start=(addr&~mask)|(inv_code_start&mask); |
| 1340 | inv_code_end=(addr&~mask)|(inv_code_end&mask); |
| 1341 | inv_debug("INV ADDR: %08x miss, inv %08x-%08x, sk %d\n", addr, inv_code_start, inv_code_end, 0); |
| 1342 | return; |
| 1343 | } |
| 1344 | } |
| 1345 | invalidate_block(addr>>12); |
| 1346 | } |
| 1347 | |
| 1348 | // This is called when loading a save state. |
| 1349 | // Anything could have changed, so invalidate everything. |
| 1350 | void invalidate_all_pages(void) |
| 1351 | { |
| 1352 | u_int page; |
| 1353 | for(page=0;page<4096;page++) |
| 1354 | invalidate_page(page); |
| 1355 | for(page=0;page<1048576;page++) |
| 1356 | if(!invalid_code[page]) { |
| 1357 | restore_candidate[(page&2047)>>3]|=1<<(page&7); |
| 1358 | restore_candidate[((page&2047)>>3)+256]|=1<<(page&7); |
| 1359 | } |
| 1360 | #ifdef USE_MINI_HT |
| 1361 | memset(mini_ht,-1,sizeof(mini_ht)); |
| 1362 | #endif |
| 1363 | do_clear_cache(); |
| 1364 | } |
| 1365 | |
| 1366 | static void do_invstub(int n) |
| 1367 | { |
| 1368 | literal_pool(20); |
| 1369 | u_int reglist=stubs[n].a; |
| 1370 | set_jump_target(stubs[n].addr, out); |
| 1371 | save_regs(reglist); |
| 1372 | if(stubs[n].b!=0) emit_mov(stubs[n].b,0); |
| 1373 | emit_far_call(invalidate_addr); |
| 1374 | restore_regs(reglist); |
| 1375 | emit_jmp(stubs[n].retaddr); // return address |
| 1376 | } |
| 1377 | |
| 1378 | // Add an entry to jump_out after making a link |
| 1379 | // src should point to code by emit_extjump2() |
| 1380 | void add_jump_out(u_int vaddr,void *src) |
| 1381 | { |
| 1382 | u_int page=get_page(vaddr); |
| 1383 | inv_debug("add_jump_out: %p -> %x (%d)\n",src,vaddr,page); |
| 1384 | check_extjump2(src); |
| 1385 | ll_add(jump_out+page,vaddr,src); |
| 1386 | //inv_debug("add_jump_out: to %p\n",get_pointer(src)); |
| 1387 | } |
| 1388 | |
| 1389 | // If a code block was found to be unmodified (bit was set in |
| 1390 | // restore_candidate) and it remains unmodified (bit is clear |
| 1391 | // in invalid_code) then move the entries for that 4K page from |
| 1392 | // the dirty list to the clean list. |
| 1393 | void clean_blocks(u_int page) |
| 1394 | { |
| 1395 | struct ll_entry *head; |
| 1396 | inv_debug("INV: clean_blocks page=%d\n",page); |
| 1397 | head=jump_dirty[page]; |
| 1398 | while(head!=NULL) { |
| 1399 | if(!invalid_code[head->vaddr>>12]) { |
| 1400 | // Don't restore blocks which are about to expire from the cache |
| 1401 | if (doesnt_expire_soon(head->addr)) { |
| 1402 | if(verify_dirty(head->addr)) { |
| 1403 | u_char *start, *end; |
| 1404 | //printf("Possibly Restore %x (%p)\n",head->vaddr, head->addr); |
| 1405 | u_int i; |
| 1406 | u_int inv=0; |
| 1407 | get_bounds(head->addr, &start, &end); |
| 1408 | if (start - rdram < RAM_SIZE) { |
| 1409 | for (i = (start-rdram+0x80000000)>>12; i <= (end-1-rdram+0x80000000)>>12; i++) { |
| 1410 | inv|=invalid_code[i]; |
| 1411 | } |
| 1412 | } |
| 1413 | else if((signed int)head->vaddr>=(signed int)0x80000000+RAM_SIZE) { |
| 1414 | inv=1; |
| 1415 | } |
| 1416 | if(!inv) { |
| 1417 | void *clean_addr = get_clean_addr(head->addr); |
| 1418 | if (doesnt_expire_soon(clean_addr)) { |
| 1419 | u_int ppage=page; |
| 1420 | inv_debug("INV: Restored %x (%p/%p)\n",head->vaddr, head->addr, clean_addr); |
| 1421 | //printf("page=%x, addr=%x\n",page,head->vaddr); |
| 1422 | //assert(head->vaddr>>12==(page|0x80000)); |
| 1423 | ll_add_flags(jump_in+ppage,head->vaddr,head->reg_sv_flags,clean_addr); |
| 1424 | struct ht_entry *ht_bin = hash_table_get(head->vaddr); |
| 1425 | if (ht_bin->vaddr[0] == head->vaddr) |
| 1426 | ht_bin->tcaddr[0] = clean_addr; // Replace existing entry |
| 1427 | if (ht_bin->vaddr[1] == head->vaddr) |
| 1428 | ht_bin->tcaddr[1] = clean_addr; // Replace existing entry |
| 1429 | } |
| 1430 | } |
| 1431 | } |
| 1432 | } |
| 1433 | } |
| 1434 | head=head->next; |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | /* Register allocation */ |
| 1439 | |
| 1440 | // Note: registers are allocated clean (unmodified state) |
| 1441 | // if you intend to modify the register, you must call dirty_reg(). |
| 1442 | static void alloc_reg(struct regstat *cur,int i,signed char reg) |
| 1443 | { |
| 1444 | int r,hr; |
| 1445 | int preferred_reg = PREFERRED_REG_FIRST |
| 1446 | + reg % (PREFERRED_REG_LAST - PREFERRED_REG_FIRST + 1); |
| 1447 | if (reg == CCREG) preferred_reg = HOST_CCREG; |
| 1448 | if (reg == PTEMP || reg == FTEMP) preferred_reg = 12; |
| 1449 | assert(PREFERRED_REG_FIRST != EXCLUDE_REG && EXCLUDE_REG != HOST_REGS); |
| 1450 | assert(reg >= 0); |
| 1451 | |
| 1452 | // Don't allocate unused registers |
| 1453 | if((cur->u>>reg)&1) return; |
| 1454 | |
| 1455 | // see if it's already allocated |
| 1456 | if (get_reg(cur->regmap, reg) >= 0) |
| 1457 | return; |
| 1458 | |
| 1459 | // Keep the same mapping if the register was already allocated in a loop |
| 1460 | preferred_reg = loop_reg(i,reg,preferred_reg); |
| 1461 | |
| 1462 | // Try to allocate the preferred register |
| 1463 | if(cur->regmap[preferred_reg]==-1) { |
| 1464 | cur->regmap[preferred_reg]=reg; |
| 1465 | cur->dirty&=~(1<<preferred_reg); |
| 1466 | cur->isconst&=~(1<<preferred_reg); |
| 1467 | return; |
| 1468 | } |
| 1469 | r=cur->regmap[preferred_reg]; |
| 1470 | assert(r < 64); |
| 1471 | if((cur->u>>r)&1) { |
| 1472 | cur->regmap[preferred_reg]=reg; |
| 1473 | cur->dirty&=~(1<<preferred_reg); |
| 1474 | cur->isconst&=~(1<<preferred_reg); |
| 1475 | return; |
| 1476 | } |
| 1477 | |
| 1478 | // Clear any unneeded registers |
| 1479 | // We try to keep the mapping consistent, if possible, because it |
| 1480 | // makes branches easier (especially loops). So we try to allocate |
| 1481 | // first (see above) before removing old mappings. If this is not |
| 1482 | // possible then go ahead and clear out the registers that are no |
| 1483 | // longer needed. |
| 1484 | for(hr=0;hr<HOST_REGS;hr++) |
| 1485 | { |
| 1486 | r=cur->regmap[hr]; |
| 1487 | if(r>=0) { |
| 1488 | assert(r < 64); |
| 1489 | if((cur->u>>r)&1) {cur->regmap[hr]=-1;break;} |
| 1490 | } |
| 1491 | } |
| 1492 | |
| 1493 | // Try to allocate any available register, but prefer |
| 1494 | // registers that have not been used recently. |
| 1495 | if (i > 0) { |
| 1496 | for (hr = PREFERRED_REG_FIRST; ; ) { |
| 1497 | if (cur->regmap[hr] < 0) { |
| 1498 | int oldreg = regs[i-1].regmap[hr]; |
| 1499 | if (oldreg < 0 || (oldreg != dops[i-1].rs1 && oldreg != dops[i-1].rs2 |
| 1500 | && oldreg != dops[i-1].rt1 && oldreg != dops[i-1].rt2)) |
| 1501 | { |
| 1502 | cur->regmap[hr]=reg; |
| 1503 | cur->dirty&=~(1<<hr); |
| 1504 | cur->isconst&=~(1<<hr); |
| 1505 | return; |
| 1506 | } |
| 1507 | } |
| 1508 | hr++; |
| 1509 | if (hr == EXCLUDE_REG) |
| 1510 | hr++; |
| 1511 | if (hr == HOST_REGS) |
| 1512 | hr = 0; |
| 1513 | if (hr == PREFERRED_REG_FIRST) |
| 1514 | break; |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | // Try to allocate any available register |
| 1519 | for (hr = PREFERRED_REG_FIRST; ; ) { |
| 1520 | if (cur->regmap[hr] < 0) { |
| 1521 | cur->regmap[hr]=reg; |
| 1522 | cur->dirty&=~(1<<hr); |
| 1523 | cur->isconst&=~(1<<hr); |
| 1524 | return; |
| 1525 | } |
| 1526 | hr++; |
| 1527 | if (hr == EXCLUDE_REG) |
| 1528 | hr++; |
| 1529 | if (hr == HOST_REGS) |
| 1530 | hr = 0; |
| 1531 | if (hr == PREFERRED_REG_FIRST) |
| 1532 | break; |
| 1533 | } |
| 1534 | |
| 1535 | // Ok, now we have to evict someone |
| 1536 | // Pick a register we hopefully won't need soon |
| 1537 | u_char hsn[MAXREG+1]; |
| 1538 | memset(hsn,10,sizeof(hsn)); |
| 1539 | int j; |
| 1540 | lsn(hsn,i,&preferred_reg); |
| 1541 | //printf("eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",cur->regmap[0],cur->regmap[1],cur->regmap[2],cur->regmap[3],cur->regmap[5],cur->regmap[6],cur->regmap[7]); |
| 1542 | //printf("hsn(%x): %d %d %d %d %d %d %d\n",start+i*4,hsn[cur->regmap[0]&63],hsn[cur->regmap[1]&63],hsn[cur->regmap[2]&63],hsn[cur->regmap[3]&63],hsn[cur->regmap[5]&63],hsn[cur->regmap[6]&63],hsn[cur->regmap[7]&63]); |
| 1543 | if(i>0) { |
| 1544 | // Don't evict the cycle count at entry points, otherwise the entry |
| 1545 | // stub will have to write it. |
| 1546 | if(dops[i].bt&&hsn[CCREG]>2) hsn[CCREG]=2; |
| 1547 | if (i>1 && hsn[CCREG] > 2 && dops[i-2].is_jump) hsn[CCREG]=2; |
| 1548 | for(j=10;j>=3;j--) |
| 1549 | { |
| 1550 | // Alloc preferred register if available |
| 1551 | if(hsn[r=cur->regmap[preferred_reg]&63]==j) { |
| 1552 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1553 | // Evict both parts of a 64-bit register |
| 1554 | if(cur->regmap[hr]==r) { |
| 1555 | cur->regmap[hr]=-1; |
| 1556 | cur->dirty&=~(1<<hr); |
| 1557 | cur->isconst&=~(1<<hr); |
| 1558 | } |
| 1559 | } |
| 1560 | cur->regmap[preferred_reg]=reg; |
| 1561 | return; |
| 1562 | } |
| 1563 | for(r=1;r<=MAXREG;r++) |
| 1564 | { |
| 1565 | if(hsn[r]==j&&r!=dops[i-1].rs1&&r!=dops[i-1].rs2&&r!=dops[i-1].rt1&&r!=dops[i-1].rt2) { |
| 1566 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1567 | if(hr!=HOST_CCREG||j<hsn[CCREG]) { |
| 1568 | if(cur->regmap[hr]==r) { |
| 1569 | cur->regmap[hr]=reg; |
| 1570 | cur->dirty&=~(1<<hr); |
| 1571 | cur->isconst&=~(1<<hr); |
| 1572 | return; |
| 1573 | } |
| 1574 | } |
| 1575 | } |
| 1576 | } |
| 1577 | } |
| 1578 | } |
| 1579 | } |
| 1580 | for(j=10;j>=0;j--) |
| 1581 | { |
| 1582 | for(r=1;r<=MAXREG;r++) |
| 1583 | { |
| 1584 | if(hsn[r]==j) { |
| 1585 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1586 | if(cur->regmap[hr]==r) { |
| 1587 | cur->regmap[hr]=reg; |
| 1588 | cur->dirty&=~(1<<hr); |
| 1589 | cur->isconst&=~(1<<hr); |
| 1590 | return; |
| 1591 | } |
| 1592 | } |
| 1593 | } |
| 1594 | } |
| 1595 | } |
| 1596 | SysPrintf("This shouldn't happen (alloc_reg)");abort(); |
| 1597 | } |
| 1598 | |
| 1599 | // Allocate a temporary register. This is done without regard to |
| 1600 | // dirty status or whether the register we request is on the unneeded list |
| 1601 | // Note: This will only allocate one register, even if called multiple times |
| 1602 | static void alloc_reg_temp(struct regstat *cur,int i,signed char reg) |
| 1603 | { |
| 1604 | int r,hr; |
| 1605 | int preferred_reg = -1; |
| 1606 | |
| 1607 | // see if it's already allocated |
| 1608 | for(hr=0;hr<HOST_REGS;hr++) |
| 1609 | { |
| 1610 | if(hr!=EXCLUDE_REG&&cur->regmap[hr]==reg) return; |
| 1611 | } |
| 1612 | |
| 1613 | // Try to allocate any available register |
| 1614 | for(hr=HOST_REGS-1;hr>=0;hr--) { |
| 1615 | if(hr!=EXCLUDE_REG&&cur->regmap[hr]==-1) { |
| 1616 | cur->regmap[hr]=reg; |
| 1617 | cur->dirty&=~(1<<hr); |
| 1618 | cur->isconst&=~(1<<hr); |
| 1619 | return; |
| 1620 | } |
| 1621 | } |
| 1622 | |
| 1623 | // Find an unneeded register |
| 1624 | for(hr=HOST_REGS-1;hr>=0;hr--) |
| 1625 | { |
| 1626 | r=cur->regmap[hr]; |
| 1627 | if(r>=0) { |
| 1628 | assert(r < 64); |
| 1629 | if((cur->u>>r)&1) { |
| 1630 | if(i==0||((unneeded_reg[i-1]>>r)&1)) { |
| 1631 | cur->regmap[hr]=reg; |
| 1632 | cur->dirty&=~(1<<hr); |
| 1633 | cur->isconst&=~(1<<hr); |
| 1634 | return; |
| 1635 | } |
| 1636 | } |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | // Ok, now we have to evict someone |
| 1641 | // Pick a register we hopefully won't need soon |
| 1642 | // TODO: we might want to follow unconditional jumps here |
| 1643 | // TODO: get rid of dupe code and make this into a function |
| 1644 | u_char hsn[MAXREG+1]; |
| 1645 | memset(hsn,10,sizeof(hsn)); |
| 1646 | int j; |
| 1647 | lsn(hsn,i,&preferred_reg); |
| 1648 | //printf("hsn: %d %d %d %d %d %d %d\n",hsn[cur->regmap[0]&63],hsn[cur->regmap[1]&63],hsn[cur->regmap[2]&63],hsn[cur->regmap[3]&63],hsn[cur->regmap[5]&63],hsn[cur->regmap[6]&63],hsn[cur->regmap[7]&63]); |
| 1649 | if(i>0) { |
| 1650 | // Don't evict the cycle count at entry points, otherwise the entry |
| 1651 | // stub will have to write it. |
| 1652 | if(dops[i].bt&&hsn[CCREG]>2) hsn[CCREG]=2; |
| 1653 | if (i>1 && hsn[CCREG] > 2 && dops[i-2].is_jump) hsn[CCREG]=2; |
| 1654 | for(j=10;j>=3;j--) |
| 1655 | { |
| 1656 | for(r=1;r<=MAXREG;r++) |
| 1657 | { |
| 1658 | if(hsn[r]==j&&r!=dops[i-1].rs1&&r!=dops[i-1].rs2&&r!=dops[i-1].rt1&&r!=dops[i-1].rt2) { |
| 1659 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1660 | if(hr!=HOST_CCREG||hsn[CCREG]>2) { |
| 1661 | if(cur->regmap[hr]==r) { |
| 1662 | cur->regmap[hr]=reg; |
| 1663 | cur->dirty&=~(1<<hr); |
| 1664 | cur->isconst&=~(1<<hr); |
| 1665 | return; |
| 1666 | } |
| 1667 | } |
| 1668 | } |
| 1669 | } |
| 1670 | } |
| 1671 | } |
| 1672 | } |
| 1673 | for(j=10;j>=0;j--) |
| 1674 | { |
| 1675 | for(r=1;r<=MAXREG;r++) |
| 1676 | { |
| 1677 | if(hsn[r]==j) { |
| 1678 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1679 | if(cur->regmap[hr]==r) { |
| 1680 | cur->regmap[hr]=reg; |
| 1681 | cur->dirty&=~(1<<hr); |
| 1682 | cur->isconst&=~(1<<hr); |
| 1683 | return; |
| 1684 | } |
| 1685 | } |
| 1686 | } |
| 1687 | } |
| 1688 | } |
| 1689 | SysPrintf("This shouldn't happen");abort(); |
| 1690 | } |
| 1691 | |
| 1692 | static void mov_alloc(struct regstat *current,int i) |
| 1693 | { |
| 1694 | if (dops[i].rs1 == HIREG || dops[i].rs1 == LOREG) { |
| 1695 | alloc_cc(current,i); // for stalls |
| 1696 | dirty_reg(current,CCREG); |
| 1697 | } |
| 1698 | |
| 1699 | // Note: Don't need to actually alloc the source registers |
| 1700 | //alloc_reg(current,i,dops[i].rs1); |
| 1701 | alloc_reg(current,i,dops[i].rt1); |
| 1702 | |
| 1703 | clear_const(current,dops[i].rs1); |
| 1704 | clear_const(current,dops[i].rt1); |
| 1705 | dirty_reg(current,dops[i].rt1); |
| 1706 | } |
| 1707 | |
| 1708 | static void shiftimm_alloc(struct regstat *current,int i) |
| 1709 | { |
| 1710 | if(dops[i].opcode2<=0x3) // SLL/SRL/SRA |
| 1711 | { |
| 1712 | if(dops[i].rt1) { |
| 1713 | if(dops[i].rs1&&needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1714 | else dops[i].use_lt1=!!dops[i].rs1; |
| 1715 | alloc_reg(current,i,dops[i].rt1); |
| 1716 | dirty_reg(current,dops[i].rt1); |
| 1717 | if(is_const(current,dops[i].rs1)) { |
| 1718 | int v=get_const(current,dops[i].rs1); |
| 1719 | if(dops[i].opcode2==0x00) set_const(current,dops[i].rt1,v<<imm[i]); |
| 1720 | if(dops[i].opcode2==0x02) set_const(current,dops[i].rt1,(u_int)v>>imm[i]); |
| 1721 | if(dops[i].opcode2==0x03) set_const(current,dops[i].rt1,v>>imm[i]); |
| 1722 | } |
| 1723 | else clear_const(current,dops[i].rt1); |
| 1724 | } |
| 1725 | } |
| 1726 | else |
| 1727 | { |
| 1728 | clear_const(current,dops[i].rs1); |
| 1729 | clear_const(current,dops[i].rt1); |
| 1730 | } |
| 1731 | |
| 1732 | if(dops[i].opcode2>=0x38&&dops[i].opcode2<=0x3b) // DSLL/DSRL/DSRA |
| 1733 | { |
| 1734 | assert(0); |
| 1735 | } |
| 1736 | if(dops[i].opcode2==0x3c) // DSLL32 |
| 1737 | { |
| 1738 | assert(0); |
| 1739 | } |
| 1740 | if(dops[i].opcode2==0x3e) // DSRL32 |
| 1741 | { |
| 1742 | assert(0); |
| 1743 | } |
| 1744 | if(dops[i].opcode2==0x3f) // DSRA32 |
| 1745 | { |
| 1746 | assert(0); |
| 1747 | } |
| 1748 | } |
| 1749 | |
| 1750 | static void shift_alloc(struct regstat *current,int i) |
| 1751 | { |
| 1752 | if(dops[i].rt1) { |
| 1753 | if(dops[i].opcode2<=0x07) // SLLV/SRLV/SRAV |
| 1754 | { |
| 1755 | if(dops[i].rs1) alloc_reg(current,i,dops[i].rs1); |
| 1756 | if(dops[i].rs2) alloc_reg(current,i,dops[i].rs2); |
| 1757 | alloc_reg(current,i,dops[i].rt1); |
| 1758 | if(dops[i].rt1==dops[i].rs2) { |
| 1759 | alloc_reg_temp(current,i,-1); |
| 1760 | minimum_free_regs[i]=1; |
| 1761 | } |
| 1762 | } else { // DSLLV/DSRLV/DSRAV |
| 1763 | assert(0); |
| 1764 | } |
| 1765 | clear_const(current,dops[i].rs1); |
| 1766 | clear_const(current,dops[i].rs2); |
| 1767 | clear_const(current,dops[i].rt1); |
| 1768 | dirty_reg(current,dops[i].rt1); |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | static void alu_alloc(struct regstat *current,int i) |
| 1773 | { |
| 1774 | if(dops[i].opcode2>=0x20&&dops[i].opcode2<=0x23) { // ADD/ADDU/SUB/SUBU |
| 1775 | if(dops[i].rt1) { |
| 1776 | if(dops[i].rs1&&dops[i].rs2) { |
| 1777 | alloc_reg(current,i,dops[i].rs1); |
| 1778 | alloc_reg(current,i,dops[i].rs2); |
| 1779 | } |
| 1780 | else { |
| 1781 | if(dops[i].rs1&&needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1782 | if(dops[i].rs2&&needed_again(dops[i].rs2,i)) alloc_reg(current,i,dops[i].rs2); |
| 1783 | } |
| 1784 | alloc_reg(current,i,dops[i].rt1); |
| 1785 | } |
| 1786 | } |
| 1787 | if(dops[i].opcode2==0x2a||dops[i].opcode2==0x2b) { // SLT/SLTU |
| 1788 | if(dops[i].rt1) { |
| 1789 | alloc_reg(current,i,dops[i].rs1); |
| 1790 | alloc_reg(current,i,dops[i].rs2); |
| 1791 | alloc_reg(current,i,dops[i].rt1); |
| 1792 | } |
| 1793 | } |
| 1794 | if(dops[i].opcode2>=0x24&&dops[i].opcode2<=0x27) { // AND/OR/XOR/NOR |
| 1795 | if(dops[i].rt1) { |
| 1796 | if(dops[i].rs1&&dops[i].rs2) { |
| 1797 | alloc_reg(current,i,dops[i].rs1); |
| 1798 | alloc_reg(current,i,dops[i].rs2); |
| 1799 | } |
| 1800 | else |
| 1801 | { |
| 1802 | if(dops[i].rs1&&needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1803 | if(dops[i].rs2&&needed_again(dops[i].rs2,i)) alloc_reg(current,i,dops[i].rs2); |
| 1804 | } |
| 1805 | alloc_reg(current,i,dops[i].rt1); |
| 1806 | } |
| 1807 | } |
| 1808 | if(dops[i].opcode2>=0x2c&&dops[i].opcode2<=0x2f) { // DADD/DADDU/DSUB/DSUBU |
| 1809 | assert(0); |
| 1810 | } |
| 1811 | clear_const(current,dops[i].rs1); |
| 1812 | clear_const(current,dops[i].rs2); |
| 1813 | clear_const(current,dops[i].rt1); |
| 1814 | dirty_reg(current,dops[i].rt1); |
| 1815 | } |
| 1816 | |
| 1817 | static void imm16_alloc(struct regstat *current,int i) |
| 1818 | { |
| 1819 | if(dops[i].rs1&&needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1820 | else dops[i].use_lt1=!!dops[i].rs1; |
| 1821 | if(dops[i].rt1) alloc_reg(current,i,dops[i].rt1); |
| 1822 | if(dops[i].opcode==0x18||dops[i].opcode==0x19) { // DADDI/DADDIU |
| 1823 | assert(0); |
| 1824 | } |
| 1825 | else if(dops[i].opcode==0x0a||dops[i].opcode==0x0b) { // SLTI/SLTIU |
| 1826 | clear_const(current,dops[i].rs1); |
| 1827 | clear_const(current,dops[i].rt1); |
| 1828 | } |
| 1829 | else if(dops[i].opcode>=0x0c&&dops[i].opcode<=0x0e) { // ANDI/ORI/XORI |
| 1830 | if(is_const(current,dops[i].rs1)) { |
| 1831 | int v=get_const(current,dops[i].rs1); |
| 1832 | if(dops[i].opcode==0x0c) set_const(current,dops[i].rt1,v&imm[i]); |
| 1833 | if(dops[i].opcode==0x0d) set_const(current,dops[i].rt1,v|imm[i]); |
| 1834 | if(dops[i].opcode==0x0e) set_const(current,dops[i].rt1,v^imm[i]); |
| 1835 | } |
| 1836 | else clear_const(current,dops[i].rt1); |
| 1837 | } |
| 1838 | else if(dops[i].opcode==0x08||dops[i].opcode==0x09) { // ADDI/ADDIU |
| 1839 | if(is_const(current,dops[i].rs1)) { |
| 1840 | int v=get_const(current,dops[i].rs1); |
| 1841 | set_const(current,dops[i].rt1,v+imm[i]); |
| 1842 | } |
| 1843 | else clear_const(current,dops[i].rt1); |
| 1844 | } |
| 1845 | else { |
| 1846 | set_const(current,dops[i].rt1,imm[i]<<16); // LUI |
| 1847 | } |
| 1848 | dirty_reg(current,dops[i].rt1); |
| 1849 | } |
| 1850 | |
| 1851 | static void load_alloc(struct regstat *current,int i) |
| 1852 | { |
| 1853 | clear_const(current,dops[i].rt1); |
| 1854 | //if(dops[i].rs1!=dops[i].rt1&&needed_again(dops[i].rs1,i)) clear_const(current,dops[i].rs1); // Does this help or hurt? |
| 1855 | if(!dops[i].rs1) current->u&=~1LL; // Allow allocating r0 if it's the source register |
| 1856 | if (needed_again(dops[i].rs1, i)) |
| 1857 | alloc_reg(current, i, dops[i].rs1); |
| 1858 | if (ram_offset) |
| 1859 | alloc_reg(current, i, ROREG); |
| 1860 | if(dops[i].rt1&&!((current->u>>dops[i].rt1)&1)) { |
| 1861 | alloc_reg(current,i,dops[i].rt1); |
| 1862 | assert(get_reg(current->regmap,dops[i].rt1)>=0); |
| 1863 | if(dops[i].opcode==0x27||dops[i].opcode==0x37) // LWU/LD |
| 1864 | { |
| 1865 | assert(0); |
| 1866 | } |
| 1867 | else if(dops[i].opcode==0x1A||dops[i].opcode==0x1B) // LDL/LDR |
| 1868 | { |
| 1869 | assert(0); |
| 1870 | } |
| 1871 | dirty_reg(current,dops[i].rt1); |
| 1872 | // LWL/LWR need a temporary register for the old value |
| 1873 | if(dops[i].opcode==0x22||dops[i].opcode==0x26) |
| 1874 | { |
| 1875 | alloc_reg(current,i,FTEMP); |
| 1876 | alloc_reg_temp(current,i,-1); |
| 1877 | minimum_free_regs[i]=1; |
| 1878 | } |
| 1879 | } |
| 1880 | else |
| 1881 | { |
| 1882 | // Load to r0 or unneeded register (dummy load) |
| 1883 | // but we still need a register to calculate the address |
| 1884 | if(dops[i].opcode==0x22||dops[i].opcode==0x26) |
| 1885 | { |
| 1886 | alloc_reg(current,i,FTEMP); // LWL/LWR need another temporary |
| 1887 | } |
| 1888 | alloc_reg_temp(current,i,-1); |
| 1889 | minimum_free_regs[i]=1; |
| 1890 | if(dops[i].opcode==0x1A||dops[i].opcode==0x1B) // LDL/LDR |
| 1891 | { |
| 1892 | assert(0); |
| 1893 | } |
| 1894 | } |
| 1895 | } |
| 1896 | |
| 1897 | static void store_alloc(struct regstat *current,int i) |
| 1898 | { |
| 1899 | clear_const(current,dops[i].rs2); |
| 1900 | if(!(dops[i].rs2)) current->u&=~1LL; // Allow allocating r0 if necessary |
| 1901 | if(needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1902 | alloc_reg(current,i,dops[i].rs2); |
| 1903 | if(dops[i].opcode==0x2c||dops[i].opcode==0x2d||dops[i].opcode==0x3f) { // 64-bit SDL/SDR/SD |
| 1904 | assert(0); |
| 1905 | } |
| 1906 | if (ram_offset) |
| 1907 | alloc_reg(current, i, ROREG); |
| 1908 | #if defined(HOST_IMM8) |
| 1909 | // On CPUs without 32-bit immediates we need a pointer to invalid_code |
| 1910 | alloc_reg(current, i, INVCP); |
| 1911 | #endif |
| 1912 | if(dops[i].opcode==0x2a||dops[i].opcode==0x2e||dops[i].opcode==0x2c||dops[i].opcode==0x2d) { // SWL/SWL/SDL/SDR |
| 1913 | alloc_reg(current,i,FTEMP); |
| 1914 | } |
| 1915 | // We need a temporary register for address generation |
| 1916 | alloc_reg_temp(current,i,-1); |
| 1917 | minimum_free_regs[i]=1; |
| 1918 | } |
| 1919 | |
| 1920 | static void c1ls_alloc(struct regstat *current,int i) |
| 1921 | { |
| 1922 | clear_const(current,dops[i].rt1); |
| 1923 | alloc_reg(current,i,CSREG); // Status |
| 1924 | } |
| 1925 | |
| 1926 | static void c2ls_alloc(struct regstat *current,int i) |
| 1927 | { |
| 1928 | clear_const(current,dops[i].rt1); |
| 1929 | if(needed_again(dops[i].rs1,i)) alloc_reg(current,i,dops[i].rs1); |
| 1930 | alloc_reg(current,i,FTEMP); |
| 1931 | if (ram_offset) |
| 1932 | alloc_reg(current, i, ROREG); |
| 1933 | #if defined(HOST_IMM8) |
| 1934 | // On CPUs without 32-bit immediates we need a pointer to invalid_code |
| 1935 | if (dops[i].opcode == 0x3a) // SWC2 |
| 1936 | alloc_reg(current,i,INVCP); |
| 1937 | #endif |
| 1938 | // We need a temporary register for address generation |
| 1939 | alloc_reg_temp(current,i,-1); |
| 1940 | minimum_free_regs[i]=1; |
| 1941 | } |
| 1942 | |
| 1943 | #ifndef multdiv_alloc |
| 1944 | static void multdiv_alloc(struct regstat *current,int i) |
| 1945 | { |
| 1946 | // case 0x18: MULT |
| 1947 | // case 0x19: MULTU |
| 1948 | // case 0x1A: DIV |
| 1949 | // case 0x1B: DIVU |
| 1950 | // case 0x1C: DMULT |
| 1951 | // case 0x1D: DMULTU |
| 1952 | // case 0x1E: DDIV |
| 1953 | // case 0x1F: DDIVU |
| 1954 | clear_const(current,dops[i].rs1); |
| 1955 | clear_const(current,dops[i].rs2); |
| 1956 | alloc_cc(current,i); // for stalls |
| 1957 | if(dops[i].rs1&&dops[i].rs2) |
| 1958 | { |
| 1959 | if((dops[i].opcode2&4)==0) // 32-bit |
| 1960 | { |
| 1961 | current->u&=~(1LL<<HIREG); |
| 1962 | current->u&=~(1LL<<LOREG); |
| 1963 | alloc_reg(current,i,HIREG); |
| 1964 | alloc_reg(current,i,LOREG); |
| 1965 | alloc_reg(current,i,dops[i].rs1); |
| 1966 | alloc_reg(current,i,dops[i].rs2); |
| 1967 | dirty_reg(current,HIREG); |
| 1968 | dirty_reg(current,LOREG); |
| 1969 | } |
| 1970 | else // 64-bit |
| 1971 | { |
| 1972 | assert(0); |
| 1973 | } |
| 1974 | } |
| 1975 | else |
| 1976 | { |
| 1977 | // Multiply by zero is zero. |
| 1978 | // MIPS does not have a divide by zero exception. |
| 1979 | // The result is undefined, we return zero. |
| 1980 | alloc_reg(current,i,HIREG); |
| 1981 | alloc_reg(current,i,LOREG); |
| 1982 | dirty_reg(current,HIREG); |
| 1983 | dirty_reg(current,LOREG); |
| 1984 | } |
| 1985 | } |
| 1986 | #endif |
| 1987 | |
| 1988 | static void cop0_alloc(struct regstat *current,int i) |
| 1989 | { |
| 1990 | if(dops[i].opcode2==0) // MFC0 |
| 1991 | { |
| 1992 | if(dops[i].rt1) { |
| 1993 | clear_const(current,dops[i].rt1); |
| 1994 | alloc_all(current,i); |
| 1995 | alloc_reg(current,i,dops[i].rt1); |
| 1996 | dirty_reg(current,dops[i].rt1); |
| 1997 | } |
| 1998 | } |
| 1999 | else if(dops[i].opcode2==4) // MTC0 |
| 2000 | { |
| 2001 | if(dops[i].rs1){ |
| 2002 | clear_const(current,dops[i].rs1); |
| 2003 | alloc_reg(current,i,dops[i].rs1); |
| 2004 | alloc_all(current,i); |
| 2005 | } |
| 2006 | else { |
| 2007 | alloc_all(current,i); // FIXME: Keep r0 |
| 2008 | current->u&=~1LL; |
| 2009 | alloc_reg(current,i,0); |
| 2010 | } |
| 2011 | } |
| 2012 | else |
| 2013 | { |
| 2014 | // TLBR/TLBWI/TLBWR/TLBP/ERET |
| 2015 | assert(dops[i].opcode2==0x10); |
| 2016 | alloc_all(current,i); |
| 2017 | } |
| 2018 | minimum_free_regs[i]=HOST_REGS; |
| 2019 | } |
| 2020 | |
| 2021 | static void cop2_alloc(struct regstat *current,int i) |
| 2022 | { |
| 2023 | if (dops[i].opcode2 < 3) // MFC2/CFC2 |
| 2024 | { |
| 2025 | alloc_cc(current,i); // for stalls |
| 2026 | dirty_reg(current,CCREG); |
| 2027 | if(dops[i].rt1){ |
| 2028 | clear_const(current,dops[i].rt1); |
| 2029 | alloc_reg(current,i,dops[i].rt1); |
| 2030 | dirty_reg(current,dops[i].rt1); |
| 2031 | } |
| 2032 | } |
| 2033 | else if (dops[i].opcode2 > 3) // MTC2/CTC2 |
| 2034 | { |
| 2035 | if(dops[i].rs1){ |
| 2036 | clear_const(current,dops[i].rs1); |
| 2037 | alloc_reg(current,i,dops[i].rs1); |
| 2038 | } |
| 2039 | else { |
| 2040 | current->u&=~1LL; |
| 2041 | alloc_reg(current,i,0); |
| 2042 | } |
| 2043 | } |
| 2044 | alloc_reg_temp(current,i,-1); |
| 2045 | minimum_free_regs[i]=1; |
| 2046 | } |
| 2047 | |
| 2048 | static void c2op_alloc(struct regstat *current,int i) |
| 2049 | { |
| 2050 | alloc_cc(current,i); // for stalls |
| 2051 | dirty_reg(current,CCREG); |
| 2052 | alloc_reg_temp(current,i,-1); |
| 2053 | } |
| 2054 | |
| 2055 | static void syscall_alloc(struct regstat *current,int i) |
| 2056 | { |
| 2057 | alloc_cc(current,i); |
| 2058 | dirty_reg(current,CCREG); |
| 2059 | alloc_all(current,i); |
| 2060 | minimum_free_regs[i]=HOST_REGS; |
| 2061 | current->isconst=0; |
| 2062 | } |
| 2063 | |
| 2064 | static void delayslot_alloc(struct regstat *current,int i) |
| 2065 | { |
| 2066 | switch(dops[i].itype) { |
| 2067 | case UJUMP: |
| 2068 | case CJUMP: |
| 2069 | case SJUMP: |
| 2070 | case RJUMP: |
| 2071 | case SYSCALL: |
| 2072 | case HLECALL: |
| 2073 | case SPAN: |
| 2074 | assem_debug("jump in the delay slot. this shouldn't happen.\n");//abort(); |
| 2075 | SysPrintf("Disabled speculative precompilation\n"); |
| 2076 | stop_after_jal=1; |
| 2077 | break; |
| 2078 | case IMM16: |
| 2079 | imm16_alloc(current,i); |
| 2080 | break; |
| 2081 | case LOAD: |
| 2082 | case LOADLR: |
| 2083 | load_alloc(current,i); |
| 2084 | break; |
| 2085 | case STORE: |
| 2086 | case STORELR: |
| 2087 | store_alloc(current,i); |
| 2088 | break; |
| 2089 | case ALU: |
| 2090 | alu_alloc(current,i); |
| 2091 | break; |
| 2092 | case SHIFT: |
| 2093 | shift_alloc(current,i); |
| 2094 | break; |
| 2095 | case MULTDIV: |
| 2096 | multdiv_alloc(current,i); |
| 2097 | break; |
| 2098 | case SHIFTIMM: |
| 2099 | shiftimm_alloc(current,i); |
| 2100 | break; |
| 2101 | case MOV: |
| 2102 | mov_alloc(current,i); |
| 2103 | break; |
| 2104 | case COP0: |
| 2105 | cop0_alloc(current,i); |
| 2106 | break; |
| 2107 | case COP1: |
| 2108 | break; |
| 2109 | case COP2: |
| 2110 | cop2_alloc(current,i); |
| 2111 | break; |
| 2112 | case C1LS: |
| 2113 | c1ls_alloc(current,i); |
| 2114 | break; |
| 2115 | case C2LS: |
| 2116 | c2ls_alloc(current,i); |
| 2117 | break; |
| 2118 | case C2OP: |
| 2119 | c2op_alloc(current,i); |
| 2120 | break; |
| 2121 | } |
| 2122 | } |
| 2123 | |
| 2124 | // Special case where a branch and delay slot span two pages in virtual memory |
| 2125 | static void pagespan_alloc(struct regstat *current,int i) |
| 2126 | { |
| 2127 | current->isconst=0; |
| 2128 | current->wasconst=0; |
| 2129 | regs[i].wasconst=0; |
| 2130 | minimum_free_regs[i]=HOST_REGS; |
| 2131 | alloc_all(current,i); |
| 2132 | alloc_cc(current,i); |
| 2133 | dirty_reg(current,CCREG); |
| 2134 | if(dops[i].opcode==3) // JAL |
| 2135 | { |
| 2136 | alloc_reg(current,i,31); |
| 2137 | dirty_reg(current,31); |
| 2138 | } |
| 2139 | if(dops[i].opcode==0&&(dops[i].opcode2&0x3E)==8) // JR/JALR |
| 2140 | { |
| 2141 | alloc_reg(current,i,dops[i].rs1); |
| 2142 | if (dops[i].rt1!=0) { |
| 2143 | alloc_reg(current,i,dops[i].rt1); |
| 2144 | dirty_reg(current,dops[i].rt1); |
| 2145 | } |
| 2146 | } |
| 2147 | if((dops[i].opcode&0x2E)==4) // BEQ/BNE/BEQL/BNEL |
| 2148 | { |
| 2149 | if(dops[i].rs1) alloc_reg(current,i,dops[i].rs1); |
| 2150 | if(dops[i].rs2) alloc_reg(current,i,dops[i].rs2); |
| 2151 | } |
| 2152 | else |
| 2153 | if((dops[i].opcode&0x2E)==6) // BLEZ/BGTZ/BLEZL/BGTZL |
| 2154 | { |
| 2155 | if(dops[i].rs1) alloc_reg(current,i,dops[i].rs1); |
| 2156 | } |
| 2157 | //else ... |
| 2158 | } |
| 2159 | |
| 2160 | static void add_stub(enum stub_type type, void *addr, void *retaddr, |
| 2161 | u_int a, uintptr_t b, uintptr_t c, u_int d, u_int e) |
| 2162 | { |
| 2163 | assert(stubcount < ARRAY_SIZE(stubs)); |
| 2164 | stubs[stubcount].type = type; |
| 2165 | stubs[stubcount].addr = addr; |
| 2166 | stubs[stubcount].retaddr = retaddr; |
| 2167 | stubs[stubcount].a = a; |
| 2168 | stubs[stubcount].b = b; |
| 2169 | stubs[stubcount].c = c; |
| 2170 | stubs[stubcount].d = d; |
| 2171 | stubs[stubcount].e = e; |
| 2172 | stubcount++; |
| 2173 | } |
| 2174 | |
| 2175 | static void add_stub_r(enum stub_type type, void *addr, void *retaddr, |
| 2176 | int i, int addr_reg, const struct regstat *i_regs, int ccadj, u_int reglist) |
| 2177 | { |
| 2178 | add_stub(type, addr, retaddr, i, addr_reg, (uintptr_t)i_regs, ccadj, reglist); |
| 2179 | } |
| 2180 | |
| 2181 | // Write out a single register |
| 2182 | static void wb_register(signed char r, const signed char regmap[], uint64_t dirty) |
| 2183 | { |
| 2184 | int hr; |
| 2185 | for(hr=0;hr<HOST_REGS;hr++) { |
| 2186 | if(hr!=EXCLUDE_REG) { |
| 2187 | if(regmap[hr]==r) { |
| 2188 | if((dirty>>hr)&1) { |
| 2189 | assert(regmap[hr]<64); |
| 2190 | emit_storereg(r,hr); |
| 2191 | } |
| 2192 | } |
| 2193 | } |
| 2194 | } |
| 2195 | } |
| 2196 | |
| 2197 | static void wb_valid(signed char pre[],signed char entry[],u_int dirty_pre,u_int dirty,uint64_t u) |
| 2198 | { |
| 2199 | //if(dirty_pre==dirty) return; |
| 2200 | int hr, r; |
| 2201 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 2202 | r = pre[hr]; |
| 2203 | if (r < 1 || r > 33 || ((u >> r) & 1)) |
| 2204 | continue; |
| 2205 | if (((dirty_pre & ~dirty) >> hr) & 1) |
| 2206 | emit_storereg(r, hr); |
| 2207 | } |
| 2208 | } |
| 2209 | |
| 2210 | // trashes r2 |
| 2211 | static void pass_args(int a0, int a1) |
| 2212 | { |
| 2213 | if(a0==1&&a1==0) { |
| 2214 | // must swap |
| 2215 | emit_mov(a0,2); emit_mov(a1,1); emit_mov(2,0); |
| 2216 | } |
| 2217 | else if(a0!=0&&a1==0) { |
| 2218 | emit_mov(a1,1); |
| 2219 | if (a0>=0) emit_mov(a0,0); |
| 2220 | } |
| 2221 | else { |
| 2222 | if(a0>=0&&a0!=0) emit_mov(a0,0); |
| 2223 | if(a1>=0&&a1!=1) emit_mov(a1,1); |
| 2224 | } |
| 2225 | } |
| 2226 | |
| 2227 | static void alu_assemble(int i, const struct regstat *i_regs) |
| 2228 | { |
| 2229 | if(dops[i].opcode2>=0x20&&dops[i].opcode2<=0x23) { // ADD/ADDU/SUB/SUBU |
| 2230 | if(dops[i].rt1) { |
| 2231 | signed char s1,s2,t; |
| 2232 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2233 | if(t>=0) { |
| 2234 | s1=get_reg(i_regs->regmap,dops[i].rs1); |
| 2235 | s2=get_reg(i_regs->regmap,dops[i].rs2); |
| 2236 | if(dops[i].rs1&&dops[i].rs2) { |
| 2237 | assert(s1>=0); |
| 2238 | assert(s2>=0); |
| 2239 | if(dops[i].opcode2&2) emit_sub(s1,s2,t); |
| 2240 | else emit_add(s1,s2,t); |
| 2241 | } |
| 2242 | else if(dops[i].rs1) { |
| 2243 | if(s1>=0) emit_mov(s1,t); |
| 2244 | else emit_loadreg(dops[i].rs1,t); |
| 2245 | } |
| 2246 | else if(dops[i].rs2) { |
| 2247 | if(s2>=0) { |
| 2248 | if(dops[i].opcode2&2) emit_neg(s2,t); |
| 2249 | else emit_mov(s2,t); |
| 2250 | } |
| 2251 | else { |
| 2252 | emit_loadreg(dops[i].rs2,t); |
| 2253 | if(dops[i].opcode2&2) emit_neg(t,t); |
| 2254 | } |
| 2255 | } |
| 2256 | else emit_zeroreg(t); |
| 2257 | } |
| 2258 | } |
| 2259 | } |
| 2260 | if(dops[i].opcode2>=0x2c&&dops[i].opcode2<=0x2f) { // DADD/DADDU/DSUB/DSUBU |
| 2261 | assert(0); |
| 2262 | } |
| 2263 | if(dops[i].opcode2==0x2a||dops[i].opcode2==0x2b) { // SLT/SLTU |
| 2264 | if(dops[i].rt1) { |
| 2265 | signed char s1l,s2l,t; |
| 2266 | { |
| 2267 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2268 | //assert(t>=0); |
| 2269 | if(t>=0) { |
| 2270 | s1l=get_reg(i_regs->regmap,dops[i].rs1); |
| 2271 | s2l=get_reg(i_regs->regmap,dops[i].rs2); |
| 2272 | if(dops[i].rs2==0) // rx<r0 |
| 2273 | { |
| 2274 | if(dops[i].opcode2==0x2a&&dops[i].rs1!=0) { // SLT |
| 2275 | assert(s1l>=0); |
| 2276 | emit_shrimm(s1l,31,t); |
| 2277 | } |
| 2278 | else // SLTU (unsigned can not be less than zero, 0<0) |
| 2279 | emit_zeroreg(t); |
| 2280 | } |
| 2281 | else if(dops[i].rs1==0) // r0<rx |
| 2282 | { |
| 2283 | assert(s2l>=0); |
| 2284 | if(dops[i].opcode2==0x2a) // SLT |
| 2285 | emit_set_gz32(s2l,t); |
| 2286 | else // SLTU (set if not zero) |
| 2287 | emit_set_nz32(s2l,t); |
| 2288 | } |
| 2289 | else{ |
| 2290 | assert(s1l>=0);assert(s2l>=0); |
| 2291 | if(dops[i].opcode2==0x2a) // SLT |
| 2292 | emit_set_if_less32(s1l,s2l,t); |
| 2293 | else // SLTU |
| 2294 | emit_set_if_carry32(s1l,s2l,t); |
| 2295 | } |
| 2296 | } |
| 2297 | } |
| 2298 | } |
| 2299 | } |
| 2300 | if(dops[i].opcode2>=0x24&&dops[i].opcode2<=0x27) { // AND/OR/XOR/NOR |
| 2301 | if(dops[i].rt1) { |
| 2302 | signed char s1l,s2l,tl; |
| 2303 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 2304 | { |
| 2305 | if(tl>=0) { |
| 2306 | s1l=get_reg(i_regs->regmap,dops[i].rs1); |
| 2307 | s2l=get_reg(i_regs->regmap,dops[i].rs2); |
| 2308 | if(dops[i].rs1&&dops[i].rs2) { |
| 2309 | assert(s1l>=0); |
| 2310 | assert(s2l>=0); |
| 2311 | if(dops[i].opcode2==0x24) { // AND |
| 2312 | emit_and(s1l,s2l,tl); |
| 2313 | } else |
| 2314 | if(dops[i].opcode2==0x25) { // OR |
| 2315 | emit_or(s1l,s2l,tl); |
| 2316 | } else |
| 2317 | if(dops[i].opcode2==0x26) { // XOR |
| 2318 | emit_xor(s1l,s2l,tl); |
| 2319 | } else |
| 2320 | if(dops[i].opcode2==0x27) { // NOR |
| 2321 | emit_or(s1l,s2l,tl); |
| 2322 | emit_not(tl,tl); |
| 2323 | } |
| 2324 | } |
| 2325 | else |
| 2326 | { |
| 2327 | if(dops[i].opcode2==0x24) { // AND |
| 2328 | emit_zeroreg(tl); |
| 2329 | } else |
| 2330 | if(dops[i].opcode2==0x25||dops[i].opcode2==0x26) { // OR/XOR |
| 2331 | if(dops[i].rs1){ |
| 2332 | if(s1l>=0) emit_mov(s1l,tl); |
| 2333 | else emit_loadreg(dops[i].rs1,tl); // CHECK: regmap_entry? |
| 2334 | } |
| 2335 | else |
| 2336 | if(dops[i].rs2){ |
| 2337 | if(s2l>=0) emit_mov(s2l,tl); |
| 2338 | else emit_loadreg(dops[i].rs2,tl); // CHECK: regmap_entry? |
| 2339 | } |
| 2340 | else emit_zeroreg(tl); |
| 2341 | } else |
| 2342 | if(dops[i].opcode2==0x27) { // NOR |
| 2343 | if(dops[i].rs1){ |
| 2344 | if(s1l>=0) emit_not(s1l,tl); |
| 2345 | else { |
| 2346 | emit_loadreg(dops[i].rs1,tl); |
| 2347 | emit_not(tl,tl); |
| 2348 | } |
| 2349 | } |
| 2350 | else |
| 2351 | if(dops[i].rs2){ |
| 2352 | if(s2l>=0) emit_not(s2l,tl); |
| 2353 | else { |
| 2354 | emit_loadreg(dops[i].rs2,tl); |
| 2355 | emit_not(tl,tl); |
| 2356 | } |
| 2357 | } |
| 2358 | else emit_movimm(-1,tl); |
| 2359 | } |
| 2360 | } |
| 2361 | } |
| 2362 | } |
| 2363 | } |
| 2364 | } |
| 2365 | } |
| 2366 | |
| 2367 | static void imm16_assemble(int i, const struct regstat *i_regs) |
| 2368 | { |
| 2369 | if (dops[i].opcode==0x0f) { // LUI |
| 2370 | if(dops[i].rt1) { |
| 2371 | signed char t; |
| 2372 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2373 | //assert(t>=0); |
| 2374 | if(t>=0) { |
| 2375 | if(!((i_regs->isconst>>t)&1)) |
| 2376 | emit_movimm(imm[i]<<16,t); |
| 2377 | } |
| 2378 | } |
| 2379 | } |
| 2380 | if(dops[i].opcode==0x08||dops[i].opcode==0x09) { // ADDI/ADDIU |
| 2381 | if(dops[i].rt1) { |
| 2382 | signed char s,t; |
| 2383 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2384 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 2385 | if(dops[i].rs1) { |
| 2386 | //assert(t>=0); |
| 2387 | //assert(s>=0); |
| 2388 | if(t>=0) { |
| 2389 | if(!((i_regs->isconst>>t)&1)) { |
| 2390 | if(s<0) { |
| 2391 | if(i_regs->regmap_entry[t]!=dops[i].rs1) emit_loadreg(dops[i].rs1,t); |
| 2392 | emit_addimm(t,imm[i],t); |
| 2393 | }else{ |
| 2394 | if(!((i_regs->wasconst>>s)&1)) |
| 2395 | emit_addimm(s,imm[i],t); |
| 2396 | else |
| 2397 | emit_movimm(constmap[i][s]+imm[i],t); |
| 2398 | } |
| 2399 | } |
| 2400 | } |
| 2401 | } else { |
| 2402 | if(t>=0) { |
| 2403 | if(!((i_regs->isconst>>t)&1)) |
| 2404 | emit_movimm(imm[i],t); |
| 2405 | } |
| 2406 | } |
| 2407 | } |
| 2408 | } |
| 2409 | if(dops[i].opcode==0x18||dops[i].opcode==0x19) { // DADDI/DADDIU |
| 2410 | if(dops[i].rt1) { |
| 2411 | signed char sl,tl; |
| 2412 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 2413 | sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 2414 | if(tl>=0) { |
| 2415 | if(dops[i].rs1) { |
| 2416 | assert(sl>=0); |
| 2417 | emit_addimm(sl,imm[i],tl); |
| 2418 | } else { |
| 2419 | emit_movimm(imm[i],tl); |
| 2420 | } |
| 2421 | } |
| 2422 | } |
| 2423 | } |
| 2424 | else if(dops[i].opcode==0x0a||dops[i].opcode==0x0b) { // SLTI/SLTIU |
| 2425 | if(dops[i].rt1) { |
| 2426 | //assert(dops[i].rs1!=0); // r0 might be valid, but it's probably a bug |
| 2427 | signed char sl,t; |
| 2428 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2429 | sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 2430 | //assert(t>=0); |
| 2431 | if(t>=0) { |
| 2432 | if(dops[i].rs1>0) { |
| 2433 | if(dops[i].opcode==0x0a) { // SLTI |
| 2434 | if(sl<0) { |
| 2435 | if(i_regs->regmap_entry[t]!=dops[i].rs1) emit_loadreg(dops[i].rs1,t); |
| 2436 | emit_slti32(t,imm[i],t); |
| 2437 | }else{ |
| 2438 | emit_slti32(sl,imm[i],t); |
| 2439 | } |
| 2440 | } |
| 2441 | else { // SLTIU |
| 2442 | if(sl<0) { |
| 2443 | if(i_regs->regmap_entry[t]!=dops[i].rs1) emit_loadreg(dops[i].rs1,t); |
| 2444 | emit_sltiu32(t,imm[i],t); |
| 2445 | }else{ |
| 2446 | emit_sltiu32(sl,imm[i],t); |
| 2447 | } |
| 2448 | } |
| 2449 | }else{ |
| 2450 | // SLTI(U) with r0 is just stupid, |
| 2451 | // nonetheless examples can be found |
| 2452 | if(dops[i].opcode==0x0a) // SLTI |
| 2453 | if(0<imm[i]) emit_movimm(1,t); |
| 2454 | else emit_zeroreg(t); |
| 2455 | else // SLTIU |
| 2456 | { |
| 2457 | if(imm[i]) emit_movimm(1,t); |
| 2458 | else emit_zeroreg(t); |
| 2459 | } |
| 2460 | } |
| 2461 | } |
| 2462 | } |
| 2463 | } |
| 2464 | else if(dops[i].opcode>=0x0c&&dops[i].opcode<=0x0e) { // ANDI/ORI/XORI |
| 2465 | if(dops[i].rt1) { |
| 2466 | signed char sl,tl; |
| 2467 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 2468 | sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 2469 | if(tl>=0 && !((i_regs->isconst>>tl)&1)) { |
| 2470 | if(dops[i].opcode==0x0c) //ANDI |
| 2471 | { |
| 2472 | if(dops[i].rs1) { |
| 2473 | if(sl<0) { |
| 2474 | if(i_regs->regmap_entry[tl]!=dops[i].rs1) emit_loadreg(dops[i].rs1,tl); |
| 2475 | emit_andimm(tl,imm[i],tl); |
| 2476 | }else{ |
| 2477 | if(!((i_regs->wasconst>>sl)&1)) |
| 2478 | emit_andimm(sl,imm[i],tl); |
| 2479 | else |
| 2480 | emit_movimm(constmap[i][sl]&imm[i],tl); |
| 2481 | } |
| 2482 | } |
| 2483 | else |
| 2484 | emit_zeroreg(tl); |
| 2485 | } |
| 2486 | else |
| 2487 | { |
| 2488 | if(dops[i].rs1) { |
| 2489 | if(sl<0) { |
| 2490 | if(i_regs->regmap_entry[tl]!=dops[i].rs1) emit_loadreg(dops[i].rs1,tl); |
| 2491 | } |
| 2492 | if(dops[i].opcode==0x0d) { // ORI |
| 2493 | if(sl<0) { |
| 2494 | emit_orimm(tl,imm[i],tl); |
| 2495 | }else{ |
| 2496 | if(!((i_regs->wasconst>>sl)&1)) |
| 2497 | emit_orimm(sl,imm[i],tl); |
| 2498 | else |
| 2499 | emit_movimm(constmap[i][sl]|imm[i],tl); |
| 2500 | } |
| 2501 | } |
| 2502 | if(dops[i].opcode==0x0e) { // XORI |
| 2503 | if(sl<0) { |
| 2504 | emit_xorimm(tl,imm[i],tl); |
| 2505 | }else{ |
| 2506 | if(!((i_regs->wasconst>>sl)&1)) |
| 2507 | emit_xorimm(sl,imm[i],tl); |
| 2508 | else |
| 2509 | emit_movimm(constmap[i][sl]^imm[i],tl); |
| 2510 | } |
| 2511 | } |
| 2512 | } |
| 2513 | else { |
| 2514 | emit_movimm(imm[i],tl); |
| 2515 | } |
| 2516 | } |
| 2517 | } |
| 2518 | } |
| 2519 | } |
| 2520 | } |
| 2521 | |
| 2522 | static void shiftimm_assemble(int i, const struct regstat *i_regs) |
| 2523 | { |
| 2524 | if(dops[i].opcode2<=0x3) // SLL/SRL/SRA |
| 2525 | { |
| 2526 | if(dops[i].rt1) { |
| 2527 | signed char s,t; |
| 2528 | t=get_reg(i_regs->regmap,dops[i].rt1); |
| 2529 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 2530 | //assert(t>=0); |
| 2531 | if(t>=0&&!((i_regs->isconst>>t)&1)){ |
| 2532 | if(dops[i].rs1==0) |
| 2533 | { |
| 2534 | emit_zeroreg(t); |
| 2535 | } |
| 2536 | else |
| 2537 | { |
| 2538 | if(s<0&&i_regs->regmap_entry[t]!=dops[i].rs1) emit_loadreg(dops[i].rs1,t); |
| 2539 | if(imm[i]) { |
| 2540 | if(dops[i].opcode2==0) // SLL |
| 2541 | { |
| 2542 | emit_shlimm(s<0?t:s,imm[i],t); |
| 2543 | } |
| 2544 | if(dops[i].opcode2==2) // SRL |
| 2545 | { |
| 2546 | emit_shrimm(s<0?t:s,imm[i],t); |
| 2547 | } |
| 2548 | if(dops[i].opcode2==3) // SRA |
| 2549 | { |
| 2550 | emit_sarimm(s<0?t:s,imm[i],t); |
| 2551 | } |
| 2552 | }else{ |
| 2553 | // Shift by zero |
| 2554 | if(s>=0 && s!=t) emit_mov(s,t); |
| 2555 | } |
| 2556 | } |
| 2557 | } |
| 2558 | //emit_storereg(dops[i].rt1,t); //DEBUG |
| 2559 | } |
| 2560 | } |
| 2561 | if(dops[i].opcode2>=0x38&&dops[i].opcode2<=0x3b) // DSLL/DSRL/DSRA |
| 2562 | { |
| 2563 | assert(0); |
| 2564 | } |
| 2565 | if(dops[i].opcode2==0x3c) // DSLL32 |
| 2566 | { |
| 2567 | assert(0); |
| 2568 | } |
| 2569 | if(dops[i].opcode2==0x3e) // DSRL32 |
| 2570 | { |
| 2571 | assert(0); |
| 2572 | } |
| 2573 | if(dops[i].opcode2==0x3f) // DSRA32 |
| 2574 | { |
| 2575 | assert(0); |
| 2576 | } |
| 2577 | } |
| 2578 | |
| 2579 | #ifndef shift_assemble |
| 2580 | static void shift_assemble(int i, const struct regstat *i_regs) |
| 2581 | { |
| 2582 | signed char s,t,shift; |
| 2583 | if (dops[i].rt1 == 0) |
| 2584 | return; |
| 2585 | assert(dops[i].opcode2<=0x07); // SLLV/SRLV/SRAV |
| 2586 | t = get_reg(i_regs->regmap, dops[i].rt1); |
| 2587 | s = get_reg(i_regs->regmap, dops[i].rs1); |
| 2588 | shift = get_reg(i_regs->regmap, dops[i].rs2); |
| 2589 | if (t < 0) |
| 2590 | return; |
| 2591 | |
| 2592 | if(dops[i].rs1==0) |
| 2593 | emit_zeroreg(t); |
| 2594 | else if(dops[i].rs2==0) { |
| 2595 | assert(s>=0); |
| 2596 | if(s!=t) emit_mov(s,t); |
| 2597 | } |
| 2598 | else { |
| 2599 | host_tempreg_acquire(); |
| 2600 | emit_andimm(shift,31,HOST_TEMPREG); |
| 2601 | switch(dops[i].opcode2) { |
| 2602 | case 4: // SLLV |
| 2603 | emit_shl(s,HOST_TEMPREG,t); |
| 2604 | break; |
| 2605 | case 6: // SRLV |
| 2606 | emit_shr(s,HOST_TEMPREG,t); |
| 2607 | break; |
| 2608 | case 7: // SRAV |
| 2609 | emit_sar(s,HOST_TEMPREG,t); |
| 2610 | break; |
| 2611 | default: |
| 2612 | assert(0); |
| 2613 | } |
| 2614 | host_tempreg_release(); |
| 2615 | } |
| 2616 | } |
| 2617 | |
| 2618 | #endif |
| 2619 | |
| 2620 | enum { |
| 2621 | MTYPE_8000 = 0, |
| 2622 | MTYPE_8020, |
| 2623 | MTYPE_0000, |
| 2624 | MTYPE_A000, |
| 2625 | MTYPE_1F80, |
| 2626 | }; |
| 2627 | |
| 2628 | static int get_ptr_mem_type(u_int a) |
| 2629 | { |
| 2630 | if(a < 0x00200000) { |
| 2631 | if(a<0x1000&&((start>>20)==0xbfc||(start>>24)==0xa0)) |
| 2632 | // return wrong, must use memhandler for BIOS self-test to pass |
| 2633 | // 007 does similar stuff from a00 mirror, weird stuff |
| 2634 | return MTYPE_8000; |
| 2635 | return MTYPE_0000; |
| 2636 | } |
| 2637 | if(0x1f800000 <= a && a < 0x1f801000) |
| 2638 | return MTYPE_1F80; |
| 2639 | if(0x80200000 <= a && a < 0x80800000) |
| 2640 | return MTYPE_8020; |
| 2641 | if(0xa0000000 <= a && a < 0xa0200000) |
| 2642 | return MTYPE_A000; |
| 2643 | return MTYPE_8000; |
| 2644 | } |
| 2645 | |
| 2646 | static int get_ro_reg(const struct regstat *i_regs, int host_tempreg_free) |
| 2647 | { |
| 2648 | int r = get_reg(i_regs->regmap, ROREG); |
| 2649 | if (r < 0 && host_tempreg_free) { |
| 2650 | host_tempreg_acquire(); |
| 2651 | emit_loadreg(ROREG, r = HOST_TEMPREG); |
| 2652 | } |
| 2653 | if (r < 0) |
| 2654 | abort(); |
| 2655 | return r; |
| 2656 | } |
| 2657 | |
| 2658 | static void *emit_fastpath_cmp_jump(int i, const struct regstat *i_regs, |
| 2659 | int addr, int *offset_reg, int *addr_reg_override) |
| 2660 | { |
| 2661 | void *jaddr = NULL; |
| 2662 | int type = 0; |
| 2663 | int mr = dops[i].rs1; |
| 2664 | *offset_reg = -1; |
| 2665 | if(((smrv_strong|smrv_weak)>>mr)&1) { |
| 2666 | type=get_ptr_mem_type(smrv[mr]); |
| 2667 | //printf("set %08x @%08x r%d %d\n", smrv[mr], start+i*4, mr, type); |
| 2668 | } |
| 2669 | else { |
| 2670 | // use the mirror we are running on |
| 2671 | type=get_ptr_mem_type(start); |
| 2672 | //printf("set nospec @%08x r%d %d\n", start+i*4, mr, type); |
| 2673 | } |
| 2674 | |
| 2675 | if(type==MTYPE_8020) { // RAM 80200000+ mirror |
| 2676 | host_tempreg_acquire(); |
| 2677 | emit_andimm(addr,~0x00e00000,HOST_TEMPREG); |
| 2678 | addr=*addr_reg_override=HOST_TEMPREG; |
| 2679 | type=0; |
| 2680 | } |
| 2681 | else if(type==MTYPE_0000) { // RAM 0 mirror |
| 2682 | host_tempreg_acquire(); |
| 2683 | emit_orimm(addr,0x80000000,HOST_TEMPREG); |
| 2684 | addr=*addr_reg_override=HOST_TEMPREG; |
| 2685 | type=0; |
| 2686 | } |
| 2687 | else if(type==MTYPE_A000) { // RAM A mirror |
| 2688 | host_tempreg_acquire(); |
| 2689 | emit_andimm(addr,~0x20000000,HOST_TEMPREG); |
| 2690 | addr=*addr_reg_override=HOST_TEMPREG; |
| 2691 | type=0; |
| 2692 | } |
| 2693 | else if(type==MTYPE_1F80) { // scratchpad |
| 2694 | if (psxH == (void *)0x1f800000) { |
| 2695 | host_tempreg_acquire(); |
| 2696 | emit_xorimm(addr,0x1f800000,HOST_TEMPREG); |
| 2697 | emit_cmpimm(HOST_TEMPREG,0x1000); |
| 2698 | host_tempreg_release(); |
| 2699 | jaddr=out; |
| 2700 | emit_jc(0); |
| 2701 | } |
| 2702 | else { |
| 2703 | // do the usual RAM check, jump will go to the right handler |
| 2704 | type=0; |
| 2705 | } |
| 2706 | } |
| 2707 | |
| 2708 | if (type == 0) // need ram check |
| 2709 | { |
| 2710 | emit_cmpimm(addr,RAM_SIZE); |
| 2711 | jaddr = out; |
| 2712 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 2713 | // Hint to branch predictor that the branch is unlikely to be taken |
| 2714 | if (dops[i].rs1 >= 28) |
| 2715 | emit_jno_unlikely(0); |
| 2716 | else |
| 2717 | #endif |
| 2718 | emit_jno(0); |
| 2719 | if (ram_offset != 0) |
| 2720 | *offset_reg = get_ro_reg(i_regs, 0); |
| 2721 | } |
| 2722 | |
| 2723 | return jaddr; |
| 2724 | } |
| 2725 | |
| 2726 | // return memhandler, or get directly accessable address and return 0 |
| 2727 | static void *get_direct_memhandler(void *table, u_int addr, |
| 2728 | enum stub_type type, uintptr_t *addr_host) |
| 2729 | { |
| 2730 | uintptr_t msb = 1ull << (sizeof(uintptr_t)*8 - 1); |
| 2731 | uintptr_t l1, l2 = 0; |
| 2732 | l1 = ((uintptr_t *)table)[addr>>12]; |
| 2733 | if (!(l1 & msb)) { |
| 2734 | uintptr_t v = l1 << 1; |
| 2735 | *addr_host = v + addr; |
| 2736 | return NULL; |
| 2737 | } |
| 2738 | else { |
| 2739 | l1 <<= 1; |
| 2740 | if (type == LOADB_STUB || type == LOADBU_STUB || type == STOREB_STUB) |
| 2741 | l2 = ((uintptr_t *)l1)[0x1000/4 + 0x1000/2 + (addr&0xfff)]; |
| 2742 | else if (type == LOADH_STUB || type == LOADHU_STUB || type == STOREH_STUB) |
| 2743 | l2 = ((uintptr_t *)l1)[0x1000/4 + (addr&0xfff)/2]; |
| 2744 | else |
| 2745 | l2 = ((uintptr_t *)l1)[(addr&0xfff)/4]; |
| 2746 | if (!(l2 & msb)) { |
| 2747 | uintptr_t v = l2 << 1; |
| 2748 | *addr_host = v + (addr&0xfff); |
| 2749 | return NULL; |
| 2750 | } |
| 2751 | return (void *)(l2 << 1); |
| 2752 | } |
| 2753 | } |
| 2754 | |
| 2755 | static u_int get_host_reglist(const signed char *regmap) |
| 2756 | { |
| 2757 | u_int reglist = 0, hr; |
| 2758 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 2759 | if (hr != EXCLUDE_REG && regmap[hr] >= 0) |
| 2760 | reglist |= 1 << hr; |
| 2761 | } |
| 2762 | return reglist; |
| 2763 | } |
| 2764 | |
| 2765 | static u_int reglist_exclude(u_int reglist, int r1, int r2) |
| 2766 | { |
| 2767 | if (r1 >= 0) |
| 2768 | reglist &= ~(1u << r1); |
| 2769 | if (r2 >= 0) |
| 2770 | reglist &= ~(1u << r2); |
| 2771 | return reglist; |
| 2772 | } |
| 2773 | |
| 2774 | // find a temp caller-saved register not in reglist (so assumed to be free) |
| 2775 | static int reglist_find_free(u_int reglist) |
| 2776 | { |
| 2777 | u_int free_regs = ~reglist & CALLER_SAVE_REGS; |
| 2778 | if (free_regs == 0) |
| 2779 | return -1; |
| 2780 | return __builtin_ctz(free_regs); |
| 2781 | } |
| 2782 | |
| 2783 | static void do_load_word(int a, int rt, int offset_reg) |
| 2784 | { |
| 2785 | if (offset_reg >= 0) |
| 2786 | emit_ldr_dualindexed(offset_reg, a, rt); |
| 2787 | else |
| 2788 | emit_readword_indexed(0, a, rt); |
| 2789 | } |
| 2790 | |
| 2791 | static void do_store_word(int a, int ofs, int rt, int offset_reg, int preseve_a) |
| 2792 | { |
| 2793 | if (offset_reg < 0) { |
| 2794 | emit_writeword_indexed(rt, ofs, a); |
| 2795 | return; |
| 2796 | } |
| 2797 | if (ofs != 0) |
| 2798 | emit_addimm(a, ofs, a); |
| 2799 | emit_str_dualindexed(offset_reg, a, rt); |
| 2800 | if (ofs != 0 && preseve_a) |
| 2801 | emit_addimm(a, -ofs, a); |
| 2802 | } |
| 2803 | |
| 2804 | static void do_store_hword(int a, int ofs, int rt, int offset_reg, int preseve_a) |
| 2805 | { |
| 2806 | if (offset_reg < 0) { |
| 2807 | emit_writehword_indexed(rt, ofs, a); |
| 2808 | return; |
| 2809 | } |
| 2810 | if (ofs != 0) |
| 2811 | emit_addimm(a, ofs, a); |
| 2812 | emit_strh_dualindexed(offset_reg, a, rt); |
| 2813 | if (ofs != 0 && preseve_a) |
| 2814 | emit_addimm(a, -ofs, a); |
| 2815 | } |
| 2816 | |
| 2817 | static void do_store_byte(int a, int rt, int offset_reg) |
| 2818 | { |
| 2819 | if (offset_reg >= 0) |
| 2820 | emit_strb_dualindexed(offset_reg, a, rt); |
| 2821 | else |
| 2822 | emit_writebyte_indexed(rt, 0, a); |
| 2823 | } |
| 2824 | |
| 2825 | static void load_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 2826 | { |
| 2827 | int s,tl,addr; |
| 2828 | int offset; |
| 2829 | void *jaddr=0; |
| 2830 | int memtarget=0,c=0; |
| 2831 | int offset_reg = -1; |
| 2832 | int fastio_reg_override = -1; |
| 2833 | u_int reglist=get_host_reglist(i_regs->regmap); |
| 2834 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 2835 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 2836 | offset=imm[i]; |
| 2837 | if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG); |
| 2838 | if(s>=0) { |
| 2839 | c=(i_regs->wasconst>>s)&1; |
| 2840 | if (c) { |
| 2841 | memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE; |
| 2842 | } |
| 2843 | } |
| 2844 | //printf("load_assemble: c=%d\n",c); |
| 2845 | //if(c) printf("load_assemble: const=%lx\n",(long)constmap[i][s]+offset); |
| 2846 | // FIXME: Even if the load is a NOP, we should check for pagefaults... |
| 2847 | if((tl<0&&(!c||(((u_int)constmap[i][s]+offset)>>16)==0x1f80)) |
| 2848 | ||dops[i].rt1==0) { |
| 2849 | // could be FIFO, must perform the read |
| 2850 | // ||dummy read |
| 2851 | assem_debug("(forced read)\n"); |
| 2852 | tl=get_reg_temp(i_regs->regmap); |
| 2853 | assert(tl>=0); |
| 2854 | } |
| 2855 | if(offset||s<0||c) addr=tl; |
| 2856 | else addr=s; |
| 2857 | //if(tl<0) tl=get_reg_temp(i_regs->regmap); |
| 2858 | if(tl>=0) { |
| 2859 | //printf("load_assemble: c=%d\n",c); |
| 2860 | //if(c) printf("load_assemble: const=%lx\n",(long)constmap[i][s]+offset); |
| 2861 | assert(tl>=0); // Even if the load is a NOP, we must check for pagefaults and I/O |
| 2862 | reglist&=~(1<<tl); |
| 2863 | if(!c) { |
| 2864 | #ifdef R29_HACK |
| 2865 | // Strmnnrmn's speed hack |
| 2866 | if(dops[i].rs1!=29||start<0x80001000||start>=0x80000000+RAM_SIZE) |
| 2867 | #endif |
| 2868 | { |
| 2869 | jaddr = emit_fastpath_cmp_jump(i, i_regs, addr, |
| 2870 | &offset_reg, &fastio_reg_override); |
| 2871 | } |
| 2872 | } |
| 2873 | else if (ram_offset && memtarget) { |
| 2874 | offset_reg = get_ro_reg(i_regs, 0); |
| 2875 | } |
| 2876 | int dummy=(dops[i].rt1==0)||(tl!=get_reg(i_regs->regmap,dops[i].rt1)); // ignore loads to r0 and unneeded reg |
| 2877 | switch (dops[i].opcode) { |
| 2878 | case 0x20: // LB |
| 2879 | if(!c||memtarget) { |
| 2880 | if(!dummy) { |
| 2881 | int a = tl; |
| 2882 | if (!c) a = addr; |
| 2883 | if (fastio_reg_override >= 0) |
| 2884 | a = fastio_reg_override; |
| 2885 | |
| 2886 | if (offset_reg >= 0) |
| 2887 | emit_ldrsb_dualindexed(offset_reg, a, tl); |
| 2888 | else |
| 2889 | emit_movsbl_indexed(0, a, tl); |
| 2890 | } |
| 2891 | if(jaddr) |
| 2892 | add_stub_r(LOADB_STUB,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 2893 | } |
| 2894 | else |
| 2895 | inline_readstub(LOADB_STUB,i,constmap[i][s]+offset,i_regs->regmap,dops[i].rt1,ccadj_,reglist); |
| 2896 | break; |
| 2897 | case 0x21: // LH |
| 2898 | if(!c||memtarget) { |
| 2899 | if(!dummy) { |
| 2900 | int a = tl; |
| 2901 | if (!c) a = addr; |
| 2902 | if (fastio_reg_override >= 0) |
| 2903 | a = fastio_reg_override; |
| 2904 | if (offset_reg >= 0) |
| 2905 | emit_ldrsh_dualindexed(offset_reg, a, tl); |
| 2906 | else |
| 2907 | emit_movswl_indexed(0, a, tl); |
| 2908 | } |
| 2909 | if(jaddr) |
| 2910 | add_stub_r(LOADH_STUB,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 2911 | } |
| 2912 | else |
| 2913 | inline_readstub(LOADH_STUB,i,constmap[i][s]+offset,i_regs->regmap,dops[i].rt1,ccadj_,reglist); |
| 2914 | break; |
| 2915 | case 0x23: // LW |
| 2916 | if(!c||memtarget) { |
| 2917 | if(!dummy) { |
| 2918 | int a = addr; |
| 2919 | if (fastio_reg_override >= 0) |
| 2920 | a = fastio_reg_override; |
| 2921 | do_load_word(a, tl, offset_reg); |
| 2922 | } |
| 2923 | if(jaddr) |
| 2924 | add_stub_r(LOADW_STUB,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 2925 | } |
| 2926 | else |
| 2927 | inline_readstub(LOADW_STUB,i,constmap[i][s]+offset,i_regs->regmap,dops[i].rt1,ccadj_,reglist); |
| 2928 | break; |
| 2929 | case 0x24: // LBU |
| 2930 | if(!c||memtarget) { |
| 2931 | if(!dummy) { |
| 2932 | int a = tl; |
| 2933 | if (!c) a = addr; |
| 2934 | if (fastio_reg_override >= 0) |
| 2935 | a = fastio_reg_override; |
| 2936 | |
| 2937 | if (offset_reg >= 0) |
| 2938 | emit_ldrb_dualindexed(offset_reg, a, tl); |
| 2939 | else |
| 2940 | emit_movzbl_indexed(0, a, tl); |
| 2941 | } |
| 2942 | if(jaddr) |
| 2943 | add_stub_r(LOADBU_STUB,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 2944 | } |
| 2945 | else |
| 2946 | inline_readstub(LOADBU_STUB,i,constmap[i][s]+offset,i_regs->regmap,dops[i].rt1,ccadj_,reglist); |
| 2947 | break; |
| 2948 | case 0x25: // LHU |
| 2949 | if(!c||memtarget) { |
| 2950 | if(!dummy) { |
| 2951 | int a = tl; |
| 2952 | if(!c) a = addr; |
| 2953 | if (fastio_reg_override >= 0) |
| 2954 | a = fastio_reg_override; |
| 2955 | if (offset_reg >= 0) |
| 2956 | emit_ldrh_dualindexed(offset_reg, a, tl); |
| 2957 | else |
| 2958 | emit_movzwl_indexed(0, a, tl); |
| 2959 | } |
| 2960 | if(jaddr) |
| 2961 | add_stub_r(LOADHU_STUB,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 2962 | } |
| 2963 | else |
| 2964 | inline_readstub(LOADHU_STUB,i,constmap[i][s]+offset,i_regs->regmap,dops[i].rt1,ccadj_,reglist); |
| 2965 | break; |
| 2966 | case 0x27: // LWU |
| 2967 | case 0x37: // LD |
| 2968 | default: |
| 2969 | assert(0); |
| 2970 | } |
| 2971 | } |
| 2972 | if (fastio_reg_override == HOST_TEMPREG || offset_reg == HOST_TEMPREG) |
| 2973 | host_tempreg_release(); |
| 2974 | } |
| 2975 | |
| 2976 | #ifndef loadlr_assemble |
| 2977 | static void loadlr_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 2978 | { |
| 2979 | int s,tl,temp,temp2,addr; |
| 2980 | int offset; |
| 2981 | void *jaddr=0; |
| 2982 | int memtarget=0,c=0; |
| 2983 | int offset_reg = -1; |
| 2984 | int fastio_reg_override = -1; |
| 2985 | u_int reglist=get_host_reglist(i_regs->regmap); |
| 2986 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 2987 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 2988 | temp=get_reg_temp(i_regs->regmap); |
| 2989 | temp2=get_reg(i_regs->regmap,FTEMP); |
| 2990 | addr=get_reg(i_regs->regmap,AGEN1+(i&1)); |
| 2991 | assert(addr<0); |
| 2992 | offset=imm[i]; |
| 2993 | reglist|=1<<temp; |
| 2994 | if(offset||s<0||c) addr=temp2; |
| 2995 | else addr=s; |
| 2996 | if(s>=0) { |
| 2997 | c=(i_regs->wasconst>>s)&1; |
| 2998 | if(c) { |
| 2999 | memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE; |
| 3000 | } |
| 3001 | } |
| 3002 | if(!c) { |
| 3003 | emit_shlimm(addr,3,temp); |
| 3004 | if (dops[i].opcode==0x22||dops[i].opcode==0x26) { |
| 3005 | emit_andimm(addr,0xFFFFFFFC,temp2); // LWL/LWR |
| 3006 | }else{ |
| 3007 | emit_andimm(addr,0xFFFFFFF8,temp2); // LDL/LDR |
| 3008 | } |
| 3009 | jaddr = emit_fastpath_cmp_jump(i, i_regs, temp2, |
| 3010 | &offset_reg, &fastio_reg_override); |
| 3011 | } |
| 3012 | else { |
| 3013 | if (ram_offset && memtarget) { |
| 3014 | offset_reg = get_ro_reg(i_regs, 0); |
| 3015 | } |
| 3016 | if (dops[i].opcode==0x22||dops[i].opcode==0x26) { |
| 3017 | emit_movimm(((constmap[i][s]+offset)<<3)&24,temp); // LWL/LWR |
| 3018 | }else{ |
| 3019 | emit_movimm(((constmap[i][s]+offset)<<3)&56,temp); // LDL/LDR |
| 3020 | } |
| 3021 | } |
| 3022 | if (dops[i].opcode==0x22||dops[i].opcode==0x26) { // LWL/LWR |
| 3023 | if(!c||memtarget) { |
| 3024 | int a = temp2; |
| 3025 | if (fastio_reg_override >= 0) |
| 3026 | a = fastio_reg_override; |
| 3027 | do_load_word(a, temp2, offset_reg); |
| 3028 | if (fastio_reg_override == HOST_TEMPREG || offset_reg == HOST_TEMPREG) |
| 3029 | host_tempreg_release(); |
| 3030 | if(jaddr) add_stub_r(LOADW_STUB,jaddr,out,i,temp2,i_regs,ccadj_,reglist); |
| 3031 | } |
| 3032 | else |
| 3033 | inline_readstub(LOADW_STUB,i,(constmap[i][s]+offset)&0xFFFFFFFC,i_regs->regmap,FTEMP,ccadj_,reglist); |
| 3034 | if(dops[i].rt1) { |
| 3035 | assert(tl>=0); |
| 3036 | emit_andimm(temp,24,temp); |
| 3037 | if (dops[i].opcode==0x22) // LWL |
| 3038 | emit_xorimm(temp,24,temp); |
| 3039 | host_tempreg_acquire(); |
| 3040 | emit_movimm(-1,HOST_TEMPREG); |
| 3041 | if (dops[i].opcode==0x26) { |
| 3042 | emit_shr(temp2,temp,temp2); |
| 3043 | emit_bic_lsr(tl,HOST_TEMPREG,temp,tl); |
| 3044 | }else{ |
| 3045 | emit_shl(temp2,temp,temp2); |
| 3046 | emit_bic_lsl(tl,HOST_TEMPREG,temp,tl); |
| 3047 | } |
| 3048 | host_tempreg_release(); |
| 3049 | emit_or(temp2,tl,tl); |
| 3050 | } |
| 3051 | //emit_storereg(dops[i].rt1,tl); // DEBUG |
| 3052 | } |
| 3053 | if (dops[i].opcode==0x1A||dops[i].opcode==0x1B) { // LDL/LDR |
| 3054 | assert(0); |
| 3055 | } |
| 3056 | } |
| 3057 | #endif |
| 3058 | |
| 3059 | static void store_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 3060 | { |
| 3061 | int s,tl; |
| 3062 | int addr,temp; |
| 3063 | int offset; |
| 3064 | void *jaddr=0; |
| 3065 | enum stub_type type=0; |
| 3066 | int memtarget=0,c=0; |
| 3067 | int agr=AGEN1+(i&1); |
| 3068 | int offset_reg = -1; |
| 3069 | int fastio_reg_override = -1; |
| 3070 | u_int reglist=get_host_reglist(i_regs->regmap); |
| 3071 | tl=get_reg(i_regs->regmap,dops[i].rs2); |
| 3072 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 3073 | temp=get_reg(i_regs->regmap,agr); |
| 3074 | if(temp<0) temp=get_reg_temp(i_regs->regmap); |
| 3075 | offset=imm[i]; |
| 3076 | if(s>=0) { |
| 3077 | c=(i_regs->wasconst>>s)&1; |
| 3078 | if(c) { |
| 3079 | memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE; |
| 3080 | } |
| 3081 | } |
| 3082 | assert(tl>=0); |
| 3083 | assert(temp>=0); |
| 3084 | if(i_regs->regmap[HOST_CCREG]==CCREG) reglist&=~(1<<HOST_CCREG); |
| 3085 | if(offset||s<0||c) addr=temp; |
| 3086 | else addr=s; |
| 3087 | if (!c) { |
| 3088 | jaddr = emit_fastpath_cmp_jump(i, i_regs, addr, |
| 3089 | &offset_reg, &fastio_reg_override); |
| 3090 | } |
| 3091 | else if (ram_offset && memtarget) { |
| 3092 | offset_reg = get_ro_reg(i_regs, 0); |
| 3093 | } |
| 3094 | |
| 3095 | switch (dops[i].opcode) { |
| 3096 | case 0x28: // SB |
| 3097 | if(!c||memtarget) { |
| 3098 | int a = temp; |
| 3099 | if (!c) a = addr; |
| 3100 | if (fastio_reg_override >= 0) |
| 3101 | a = fastio_reg_override; |
| 3102 | do_store_byte(a, tl, offset_reg); |
| 3103 | } |
| 3104 | type = STOREB_STUB; |
| 3105 | break; |
| 3106 | case 0x29: // SH |
| 3107 | if(!c||memtarget) { |
| 3108 | int a = temp; |
| 3109 | if (!c) a = addr; |
| 3110 | if (fastio_reg_override >= 0) |
| 3111 | a = fastio_reg_override; |
| 3112 | do_store_hword(a, 0, tl, offset_reg, 1); |
| 3113 | } |
| 3114 | type = STOREH_STUB; |
| 3115 | break; |
| 3116 | case 0x2B: // SW |
| 3117 | if(!c||memtarget) { |
| 3118 | int a = addr; |
| 3119 | if (fastio_reg_override >= 0) |
| 3120 | a = fastio_reg_override; |
| 3121 | do_store_word(a, 0, tl, offset_reg, 1); |
| 3122 | } |
| 3123 | type = STOREW_STUB; |
| 3124 | break; |
| 3125 | case 0x3F: // SD |
| 3126 | default: |
| 3127 | assert(0); |
| 3128 | } |
| 3129 | if (fastio_reg_override == HOST_TEMPREG || offset_reg == HOST_TEMPREG) |
| 3130 | host_tempreg_release(); |
| 3131 | if(jaddr) { |
| 3132 | // PCSX store handlers don't check invcode again |
| 3133 | reglist|=1<<addr; |
| 3134 | add_stub_r(type,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 3135 | jaddr=0; |
| 3136 | } |
| 3137 | if(!(i_regs->waswritten&(1<<dops[i].rs1)) && !HACK_ENABLED(NDHACK_NO_SMC_CHECK)) { |
| 3138 | if(!c||memtarget) { |
| 3139 | #ifdef DESTRUCTIVE_SHIFT |
| 3140 | // The x86 shift operation is 'destructive'; it overwrites the |
| 3141 | // source register, so we need to make a copy first and use that. |
| 3142 | addr=temp; |
| 3143 | #endif |
| 3144 | #if defined(HOST_IMM8) |
| 3145 | int ir=get_reg(i_regs->regmap,INVCP); |
| 3146 | assert(ir>=0); |
| 3147 | emit_cmpmem_indexedsr12_reg(ir,addr,1); |
| 3148 | #else |
| 3149 | emit_cmpmem_indexedsr12_imm(invalid_code,addr,1); |
| 3150 | #endif |
| 3151 | #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT) |
| 3152 | emit_callne(invalidate_addr_reg[addr]); |
| 3153 | #else |
| 3154 | void *jaddr2 = out; |
| 3155 | emit_jne(0); |
| 3156 | add_stub(INVCODE_STUB,jaddr2,out,reglist|(1<<HOST_CCREG),addr,0,0,0); |
| 3157 | #endif |
| 3158 | } |
| 3159 | } |
| 3160 | u_int addr_val=constmap[i][s]+offset; |
| 3161 | if(jaddr) { |
| 3162 | add_stub_r(type,jaddr,out,i,addr,i_regs,ccadj_,reglist); |
| 3163 | } else if(c&&!memtarget) { |
| 3164 | inline_writestub(type,i,addr_val,i_regs->regmap,dops[i].rs2,ccadj_,reglist); |
| 3165 | } |
| 3166 | // basic current block modification detection.. |
| 3167 | // not looking back as that should be in mips cache already |
| 3168 | // (see Spyro2 title->attract mode) |
| 3169 | if(c&&start+i*4<addr_val&&addr_val<start+slen*4) { |
| 3170 | SysPrintf("write to %08x hits block %08x, pc=%08x\n",addr_val,start,start+i*4); |
| 3171 | assert(i_regs->regmap==regs[i].regmap); // not delay slot |
| 3172 | if(i_regs->regmap==regs[i].regmap) { |
| 3173 | load_all_consts(regs[i].regmap_entry,regs[i].wasdirty,i); |
| 3174 | wb_dirtys(regs[i].regmap_entry,regs[i].wasdirty); |
| 3175 | emit_movimm(start+i*4+4,0); |
| 3176 | emit_writeword(0,&pcaddr); |
| 3177 | emit_addimm(HOST_CCREG,2,HOST_CCREG); |
| 3178 | emit_far_call(get_addr_ht); |
| 3179 | emit_jmpreg(0); |
| 3180 | } |
| 3181 | } |
| 3182 | } |
| 3183 | |
| 3184 | static void storelr_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 3185 | { |
| 3186 | int s,tl; |
| 3187 | int temp; |
| 3188 | int offset; |
| 3189 | void *jaddr=0; |
| 3190 | void *case1, *case23, *case3; |
| 3191 | void *done0, *done1, *done2; |
| 3192 | int memtarget=0,c=0; |
| 3193 | int agr=AGEN1+(i&1); |
| 3194 | int offset_reg = -1; |
| 3195 | u_int reglist=get_host_reglist(i_regs->regmap); |
| 3196 | tl=get_reg(i_regs->regmap,dops[i].rs2); |
| 3197 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 3198 | temp=get_reg(i_regs->regmap,agr); |
| 3199 | if(temp<0) temp=get_reg_temp(i_regs->regmap); |
| 3200 | offset=imm[i]; |
| 3201 | if(s>=0) { |
| 3202 | c=(i_regs->isconst>>s)&1; |
| 3203 | if(c) { |
| 3204 | memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE; |
| 3205 | } |
| 3206 | } |
| 3207 | assert(tl>=0); |
| 3208 | assert(temp>=0); |
| 3209 | if(!c) { |
| 3210 | emit_cmpimm(s<0||offset?temp:s,RAM_SIZE); |
| 3211 | if(!offset&&s!=temp) emit_mov(s,temp); |
| 3212 | jaddr=out; |
| 3213 | emit_jno(0); |
| 3214 | } |
| 3215 | else |
| 3216 | { |
| 3217 | if(!memtarget||!dops[i].rs1) { |
| 3218 | jaddr=out; |
| 3219 | emit_jmp(0); |
| 3220 | } |
| 3221 | } |
| 3222 | if (ram_offset) |
| 3223 | offset_reg = get_ro_reg(i_regs, 0); |
| 3224 | |
| 3225 | if (dops[i].opcode==0x2C||dops[i].opcode==0x2D) { // SDL/SDR |
| 3226 | assert(0); |
| 3227 | } |
| 3228 | |
| 3229 | emit_testimm(temp,2); |
| 3230 | case23=out; |
| 3231 | emit_jne(0); |
| 3232 | emit_testimm(temp,1); |
| 3233 | case1=out; |
| 3234 | emit_jne(0); |
| 3235 | // 0 |
| 3236 | if (dops[i].opcode == 0x2A) { // SWL |
| 3237 | // Write msb into least significant byte |
| 3238 | if (dops[i].rs2) emit_rorimm(tl, 24, tl); |
| 3239 | do_store_byte(temp, tl, offset_reg); |
| 3240 | if (dops[i].rs2) emit_rorimm(tl, 8, tl); |
| 3241 | } |
| 3242 | else if (dops[i].opcode == 0x2E) { // SWR |
| 3243 | // Write entire word |
| 3244 | do_store_word(temp, 0, tl, offset_reg, 1); |
| 3245 | } |
| 3246 | done0 = out; |
| 3247 | emit_jmp(0); |
| 3248 | // 1 |
| 3249 | set_jump_target(case1, out); |
| 3250 | if (dops[i].opcode == 0x2A) { // SWL |
| 3251 | // Write two msb into two least significant bytes |
| 3252 | if (dops[i].rs2) emit_rorimm(tl, 16, tl); |
| 3253 | do_store_hword(temp, -1, tl, offset_reg, 0); |
| 3254 | if (dops[i].rs2) emit_rorimm(tl, 16, tl); |
| 3255 | } |
| 3256 | else if (dops[i].opcode == 0x2E) { // SWR |
| 3257 | // Write 3 lsb into three most significant bytes |
| 3258 | do_store_byte(temp, tl, offset_reg); |
| 3259 | if (dops[i].rs2) emit_rorimm(tl, 8, tl); |
| 3260 | do_store_hword(temp, 1, tl, offset_reg, 0); |
| 3261 | if (dops[i].rs2) emit_rorimm(tl, 24, tl); |
| 3262 | } |
| 3263 | done1=out; |
| 3264 | emit_jmp(0); |
| 3265 | // 2,3 |
| 3266 | set_jump_target(case23, out); |
| 3267 | emit_testimm(temp,1); |
| 3268 | case3 = out; |
| 3269 | emit_jne(0); |
| 3270 | // 2 |
| 3271 | if (dops[i].opcode==0x2A) { // SWL |
| 3272 | // Write 3 msb into three least significant bytes |
| 3273 | if (dops[i].rs2) emit_rorimm(tl, 8, tl); |
| 3274 | do_store_hword(temp, -2, tl, offset_reg, 1); |
| 3275 | if (dops[i].rs2) emit_rorimm(tl, 16, tl); |
| 3276 | do_store_byte(temp, tl, offset_reg); |
| 3277 | if (dops[i].rs2) emit_rorimm(tl, 8, tl); |
| 3278 | } |
| 3279 | else if (dops[i].opcode == 0x2E) { // SWR |
| 3280 | // Write two lsb into two most significant bytes |
| 3281 | do_store_hword(temp, 0, tl, offset_reg, 1); |
| 3282 | } |
| 3283 | done2 = out; |
| 3284 | emit_jmp(0); |
| 3285 | // 3 |
| 3286 | set_jump_target(case3, out); |
| 3287 | if (dops[i].opcode == 0x2A) { // SWL |
| 3288 | do_store_word(temp, -3, tl, offset_reg, 0); |
| 3289 | } |
| 3290 | else if (dops[i].opcode == 0x2E) { // SWR |
| 3291 | do_store_byte(temp, tl, offset_reg); |
| 3292 | } |
| 3293 | set_jump_target(done0, out); |
| 3294 | set_jump_target(done1, out); |
| 3295 | set_jump_target(done2, out); |
| 3296 | if (offset_reg == HOST_TEMPREG) |
| 3297 | host_tempreg_release(); |
| 3298 | if(!c||!memtarget) |
| 3299 | add_stub_r(STORELR_STUB,jaddr,out,i,temp,i_regs,ccadj_,reglist); |
| 3300 | if(!(i_regs->waswritten&(1<<dops[i].rs1)) && !HACK_ENABLED(NDHACK_NO_SMC_CHECK)) { |
| 3301 | #if defined(HOST_IMM8) |
| 3302 | int ir=get_reg(i_regs->regmap,INVCP); |
| 3303 | assert(ir>=0); |
| 3304 | emit_cmpmem_indexedsr12_reg(ir,temp,1); |
| 3305 | #else |
| 3306 | emit_cmpmem_indexedsr12_imm(invalid_code,temp,1); |
| 3307 | #endif |
| 3308 | #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT) |
| 3309 | emit_callne(invalidate_addr_reg[temp]); |
| 3310 | #else |
| 3311 | void *jaddr2 = out; |
| 3312 | emit_jne(0); |
| 3313 | add_stub(INVCODE_STUB,jaddr2,out,reglist|(1<<HOST_CCREG),temp,0,0,0); |
| 3314 | #endif |
| 3315 | } |
| 3316 | } |
| 3317 | |
| 3318 | static void cop0_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 3319 | { |
| 3320 | if(dops[i].opcode2==0) // MFC0 |
| 3321 | { |
| 3322 | signed char t=get_reg(i_regs->regmap,dops[i].rt1); |
| 3323 | u_int copr=(source[i]>>11)&0x1f; |
| 3324 | //assert(t>=0); // Why does this happen? OOT is weird |
| 3325 | if(t>=0&&dops[i].rt1!=0) { |
| 3326 | emit_readword(®_cop0[copr],t); |
| 3327 | } |
| 3328 | } |
| 3329 | else if(dops[i].opcode2==4) // MTC0 |
| 3330 | { |
| 3331 | signed char s=get_reg(i_regs->regmap,dops[i].rs1); |
| 3332 | char copr=(source[i]>>11)&0x1f; |
| 3333 | assert(s>=0); |
| 3334 | wb_register(dops[i].rs1,i_regs->regmap,i_regs->dirty); |
| 3335 | if(copr==9||copr==11||copr==12||copr==13) { |
| 3336 | emit_readword(&last_count,HOST_TEMPREG); |
| 3337 | emit_loadreg(CCREG,HOST_CCREG); // TODO: do proper reg alloc |
| 3338 | emit_add(HOST_CCREG,HOST_TEMPREG,HOST_CCREG); |
| 3339 | emit_addimm(HOST_CCREG,ccadj_,HOST_CCREG); |
| 3340 | emit_writeword(HOST_CCREG,&Count); |
| 3341 | } |
| 3342 | // What a mess. The status register (12) can enable interrupts, |
| 3343 | // so needs a special case to handle a pending interrupt. |
| 3344 | // The interrupt must be taken immediately, because a subsequent |
| 3345 | // instruction might disable interrupts again. |
| 3346 | if(copr==12||copr==13) { |
| 3347 | if (is_delayslot) { |
| 3348 | // burn cycles to cause cc_interrupt, which will |
| 3349 | // reschedule next_interupt. Relies on CCREG from above. |
| 3350 | assem_debug("MTC0 DS %d\n", copr); |
| 3351 | emit_writeword(HOST_CCREG,&last_count); |
| 3352 | emit_movimm(0,HOST_CCREG); |
| 3353 | emit_storereg(CCREG,HOST_CCREG); |
| 3354 | emit_loadreg(dops[i].rs1,1); |
| 3355 | emit_movimm(copr,0); |
| 3356 | emit_far_call(pcsx_mtc0_ds); |
| 3357 | emit_loadreg(dops[i].rs1,s); |
| 3358 | return; |
| 3359 | } |
| 3360 | emit_movimm(start+i*4+4,HOST_TEMPREG); |
| 3361 | emit_writeword(HOST_TEMPREG,&pcaddr); |
| 3362 | emit_movimm(0,HOST_TEMPREG); |
| 3363 | emit_writeword(HOST_TEMPREG,&pending_exception); |
| 3364 | } |
| 3365 | if(s==HOST_CCREG) |
| 3366 | emit_loadreg(dops[i].rs1,1); |
| 3367 | else if(s!=1) |
| 3368 | emit_mov(s,1); |
| 3369 | emit_movimm(copr,0); |
| 3370 | emit_far_call(pcsx_mtc0); |
| 3371 | if(copr==9||copr==11||copr==12||copr==13) { |
| 3372 | emit_readword(&Count,HOST_CCREG); |
| 3373 | emit_readword(&next_interupt,HOST_TEMPREG); |
| 3374 | emit_addimm(HOST_CCREG,-ccadj_,HOST_CCREG); |
| 3375 | emit_sub(HOST_CCREG,HOST_TEMPREG,HOST_CCREG); |
| 3376 | emit_writeword(HOST_TEMPREG,&last_count); |
| 3377 | emit_storereg(CCREG,HOST_CCREG); |
| 3378 | } |
| 3379 | if(copr==12||copr==13) { |
| 3380 | assert(!is_delayslot); |
| 3381 | emit_readword(&pending_exception,14); |
| 3382 | emit_test(14,14); |
| 3383 | void *jaddr = out; |
| 3384 | emit_jeq(0); |
| 3385 | emit_readword(&pcaddr, 0); |
| 3386 | emit_addimm(HOST_CCREG,2,HOST_CCREG); |
| 3387 | emit_far_call(get_addr_ht); |
| 3388 | emit_jmpreg(0); |
| 3389 | set_jump_target(jaddr, out); |
| 3390 | } |
| 3391 | emit_loadreg(dops[i].rs1,s); |
| 3392 | } |
| 3393 | else |
| 3394 | { |
| 3395 | assert(dops[i].opcode2==0x10); |
| 3396 | //if((source[i]&0x3f)==0x10) // RFE |
| 3397 | { |
| 3398 | emit_readword(&Status,0); |
| 3399 | emit_andimm(0,0x3c,1); |
| 3400 | emit_andimm(0,~0xf,0); |
| 3401 | emit_orrshr_imm(1,2,0); |
| 3402 | emit_writeword(0,&Status); |
| 3403 | } |
| 3404 | } |
| 3405 | } |
| 3406 | |
| 3407 | static void cop1_unusable(int i, const struct regstat *i_regs) |
| 3408 | { |
| 3409 | // XXX: should just just do the exception instead |
| 3410 | //if(!cop1_usable) |
| 3411 | { |
| 3412 | void *jaddr=out; |
| 3413 | emit_jmp(0); |
| 3414 | add_stub_r(FP_STUB,jaddr,out,i,0,i_regs,is_delayslot,0); |
| 3415 | } |
| 3416 | } |
| 3417 | |
| 3418 | static void cop1_assemble(int i, const struct regstat *i_regs) |
| 3419 | { |
| 3420 | cop1_unusable(i, i_regs); |
| 3421 | } |
| 3422 | |
| 3423 | static void c1ls_assemble(int i, const struct regstat *i_regs) |
| 3424 | { |
| 3425 | cop1_unusable(i, i_regs); |
| 3426 | } |
| 3427 | |
| 3428 | // FP_STUB |
| 3429 | static void do_cop1stub(int n) |
| 3430 | { |
| 3431 | literal_pool(256); |
| 3432 | assem_debug("do_cop1stub %x\n",start+stubs[n].a*4); |
| 3433 | set_jump_target(stubs[n].addr, out); |
| 3434 | int i=stubs[n].a; |
| 3435 | // int rs=stubs[n].b; |
| 3436 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
| 3437 | int ds=stubs[n].d; |
| 3438 | if(!ds) { |
| 3439 | load_all_consts(regs[i].regmap_entry,regs[i].wasdirty,i); |
| 3440 | //if(i_regs!=®s[i]) printf("oops: regs[i]=%x i_regs=%x",(int)®s[i],(int)i_regs); |
| 3441 | } |
| 3442 | //else {printf("fp exception in delay slot\n");} |
| 3443 | wb_dirtys(i_regs->regmap_entry,i_regs->wasdirty); |
| 3444 | if(regs[i].regmap_entry[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG); |
| 3445 | emit_movimm(start+(i-ds)*4,EAX); // Get PC |
| 3446 | emit_addimm(HOST_CCREG,ccadj[i],HOST_CCREG); // CHECK: is this right? There should probably be an extra cycle... |
| 3447 | emit_far_jump(ds?fp_exception_ds:fp_exception); |
| 3448 | } |
| 3449 | |
| 3450 | static int cop2_is_stalling_op(int i, int *cycles) |
| 3451 | { |
| 3452 | if (dops[i].opcode == 0x3a) { // SWC2 |
| 3453 | *cycles = 0; |
| 3454 | return 1; |
| 3455 | } |
| 3456 | if (dops[i].itype == COP2 && (dops[i].opcode2 == 0 || dops[i].opcode2 == 2)) { // MFC2/CFC2 |
| 3457 | *cycles = 0; |
| 3458 | return 1; |
| 3459 | } |
| 3460 | if (dops[i].itype == C2OP) { |
| 3461 | *cycles = gte_cycletab[source[i] & 0x3f]; |
| 3462 | return 1; |
| 3463 | } |
| 3464 | // ... what about MTC2/CTC2/LWC2? |
| 3465 | return 0; |
| 3466 | } |
| 3467 | |
| 3468 | #if 0 |
| 3469 | static void log_gte_stall(int stall, u_int cycle) |
| 3470 | { |
| 3471 | if ((u_int)stall <= 44) |
| 3472 | printf("x stall %2d %u\n", stall, cycle + last_count); |
| 3473 | } |
| 3474 | |
| 3475 | static void emit_log_gte_stall(int i, int stall, u_int reglist) |
| 3476 | { |
| 3477 | save_regs(reglist); |
| 3478 | if (stall > 0) |
| 3479 | emit_movimm(stall, 0); |
| 3480 | else |
| 3481 | emit_mov(HOST_TEMPREG, 0); |
| 3482 | emit_addimm(HOST_CCREG, ccadj[i], 1); |
| 3483 | emit_far_call(log_gte_stall); |
| 3484 | restore_regs(reglist); |
| 3485 | } |
| 3486 | #endif |
| 3487 | |
| 3488 | static void cop2_do_stall_check(u_int op, int i, const struct regstat *i_regs, u_int reglist) |
| 3489 | { |
| 3490 | int j = i, other_gte_op_cycles = -1, stall = -MAXBLOCK, cycles_passed; |
| 3491 | int rtmp = reglist_find_free(reglist); |
| 3492 | |
| 3493 | if (HACK_ENABLED(NDHACK_NO_STALLS)) |
| 3494 | return; |
| 3495 | if (get_reg(i_regs->regmap, CCREG) != HOST_CCREG) { |
| 3496 | // happens occasionally... cc evicted? Don't bother then |
| 3497 | //printf("no cc %08x\n", start + i*4); |
| 3498 | return; |
| 3499 | } |
| 3500 | if (!dops[i].bt) { |
| 3501 | for (j = i - 1; j >= 0; j--) { |
| 3502 | //if (dops[j].is_ds) break; |
| 3503 | if (cop2_is_stalling_op(j, &other_gte_op_cycles) || dops[j].bt) |
| 3504 | break; |
| 3505 | if (j > 0 && ccadj[j - 1] > ccadj[j]) |
| 3506 | break; |
| 3507 | } |
| 3508 | j = max(j, 0); |
| 3509 | } |
| 3510 | cycles_passed = ccadj[i] - ccadj[j]; |
| 3511 | if (other_gte_op_cycles >= 0) |
| 3512 | stall = other_gte_op_cycles - cycles_passed; |
| 3513 | else if (cycles_passed >= 44) |
| 3514 | stall = 0; // can't stall |
| 3515 | if (stall == -MAXBLOCK && rtmp >= 0) { |
| 3516 | // unknown stall, do the expensive runtime check |
| 3517 | assem_debug("; cop2_do_stall_check\n"); |
| 3518 | #if 0 // too slow |
| 3519 | save_regs(reglist); |
| 3520 | emit_movimm(gte_cycletab[op], 0); |
| 3521 | emit_addimm(HOST_CCREG, ccadj[i], 1); |
| 3522 | emit_far_call(call_gteStall); |
| 3523 | restore_regs(reglist); |
| 3524 | #else |
| 3525 | host_tempreg_acquire(); |
| 3526 | emit_readword(&psxRegs.gteBusyCycle, rtmp); |
| 3527 | emit_addimm(rtmp, -ccadj[i], rtmp); |
| 3528 | emit_sub(rtmp, HOST_CCREG, HOST_TEMPREG); |
| 3529 | emit_cmpimm(HOST_TEMPREG, 44); |
| 3530 | emit_cmovb_reg(rtmp, HOST_CCREG); |
| 3531 | //emit_log_gte_stall(i, 0, reglist); |
| 3532 | host_tempreg_release(); |
| 3533 | #endif |
| 3534 | } |
| 3535 | else if (stall > 0) { |
| 3536 | //emit_log_gte_stall(i, stall, reglist); |
| 3537 | emit_addimm(HOST_CCREG, stall, HOST_CCREG); |
| 3538 | } |
| 3539 | |
| 3540 | // save gteBusyCycle, if needed |
| 3541 | if (gte_cycletab[op] == 0) |
| 3542 | return; |
| 3543 | other_gte_op_cycles = -1; |
| 3544 | for (j = i + 1; j < slen; j++) { |
| 3545 | if (cop2_is_stalling_op(j, &other_gte_op_cycles)) |
| 3546 | break; |
| 3547 | if (dops[j].is_jump) { |
| 3548 | // check ds |
| 3549 | if (j + 1 < slen && cop2_is_stalling_op(j + 1, &other_gte_op_cycles)) |
| 3550 | j++; |
| 3551 | break; |
| 3552 | } |
| 3553 | } |
| 3554 | if (other_gte_op_cycles >= 0) |
| 3555 | // will handle stall when assembling that op |
| 3556 | return; |
| 3557 | cycles_passed = ccadj[min(j, slen -1)] - ccadj[i]; |
| 3558 | if (cycles_passed >= 44) |
| 3559 | return; |
| 3560 | assem_debug("; save gteBusyCycle\n"); |
| 3561 | host_tempreg_acquire(); |
| 3562 | #if 0 |
| 3563 | emit_readword(&last_count, HOST_TEMPREG); |
| 3564 | emit_add(HOST_TEMPREG, HOST_CCREG, HOST_TEMPREG); |
| 3565 | emit_addimm(HOST_TEMPREG, ccadj[i], HOST_TEMPREG); |
| 3566 | emit_addimm(HOST_TEMPREG, gte_cycletab[op]), HOST_TEMPREG); |
| 3567 | emit_writeword(HOST_TEMPREG, &psxRegs.gteBusyCycle); |
| 3568 | #else |
| 3569 | emit_addimm(HOST_CCREG, ccadj[i] + gte_cycletab[op], HOST_TEMPREG); |
| 3570 | emit_writeword(HOST_TEMPREG, &psxRegs.gteBusyCycle); |
| 3571 | #endif |
| 3572 | host_tempreg_release(); |
| 3573 | } |
| 3574 | |
| 3575 | static int is_mflohi(int i) |
| 3576 | { |
| 3577 | return (dops[i].itype == MOV && (dops[i].rs1 == HIREG || dops[i].rs1 == LOREG)); |
| 3578 | } |
| 3579 | |
| 3580 | static int check_multdiv(int i, int *cycles) |
| 3581 | { |
| 3582 | if (dops[i].itype != MULTDIV) |
| 3583 | return 0; |
| 3584 | if (dops[i].opcode2 == 0x18 || dops[i].opcode2 == 0x19) // MULT(U) |
| 3585 | *cycles = 11; // approx from 7 11 14 |
| 3586 | else |
| 3587 | *cycles = 37; |
| 3588 | return 1; |
| 3589 | } |
| 3590 | |
| 3591 | static void multdiv_prepare_stall(int i, const struct regstat *i_regs, int ccadj_) |
| 3592 | { |
| 3593 | int j, found = 0, c = 0; |
| 3594 | if (HACK_ENABLED(NDHACK_NO_STALLS)) |
| 3595 | return; |
| 3596 | if (get_reg(i_regs->regmap, CCREG) != HOST_CCREG) { |
| 3597 | // happens occasionally... cc evicted? Don't bother then |
| 3598 | return; |
| 3599 | } |
| 3600 | for (j = i + 1; j < slen; j++) { |
| 3601 | if (dops[j].bt) |
| 3602 | break; |
| 3603 | if ((found = is_mflohi(j))) |
| 3604 | break; |
| 3605 | if (dops[j].is_jump) { |
| 3606 | // check ds |
| 3607 | if (j + 1 < slen && (found = is_mflohi(j + 1))) |
| 3608 | j++; |
| 3609 | break; |
| 3610 | } |
| 3611 | } |
| 3612 | if (found) |
| 3613 | // handle all in multdiv_do_stall() |
| 3614 | return; |
| 3615 | check_multdiv(i, &c); |
| 3616 | assert(c > 0); |
| 3617 | assem_debug("; muldiv prepare stall %d\n", c); |
| 3618 | host_tempreg_acquire(); |
| 3619 | emit_addimm(HOST_CCREG, ccadj_ + c, HOST_TEMPREG); |
| 3620 | emit_writeword(HOST_TEMPREG, &psxRegs.muldivBusyCycle); |
| 3621 | host_tempreg_release(); |
| 3622 | } |
| 3623 | |
| 3624 | static void multdiv_do_stall(int i, const struct regstat *i_regs) |
| 3625 | { |
| 3626 | int j, known_cycles = 0; |
| 3627 | u_int reglist = get_host_reglist(i_regs->regmap); |
| 3628 | int rtmp = get_reg_temp(i_regs->regmap); |
| 3629 | if (rtmp < 0) |
| 3630 | rtmp = reglist_find_free(reglist); |
| 3631 | if (HACK_ENABLED(NDHACK_NO_STALLS)) |
| 3632 | return; |
| 3633 | if (get_reg(i_regs->regmap, CCREG) != HOST_CCREG || rtmp < 0) { |
| 3634 | // happens occasionally... cc evicted? Don't bother then |
| 3635 | //printf("no cc/rtmp %08x\n", start + i*4); |
| 3636 | return; |
| 3637 | } |
| 3638 | if (!dops[i].bt) { |
| 3639 | for (j = i - 1; j >= 0; j--) { |
| 3640 | if (dops[j].is_ds) break; |
| 3641 | if (check_multdiv(j, &known_cycles)) |
| 3642 | break; |
| 3643 | if (is_mflohi(j)) |
| 3644 | // already handled by this op |
| 3645 | return; |
| 3646 | if (dops[j].bt || (j > 0 && ccadj[j - 1] > ccadj[j])) |
| 3647 | break; |
| 3648 | } |
| 3649 | j = max(j, 0); |
| 3650 | } |
| 3651 | if (known_cycles > 0) { |
| 3652 | known_cycles -= ccadj[i] - ccadj[j]; |
| 3653 | assem_debug("; muldiv stall resolved %d\n", known_cycles); |
| 3654 | if (known_cycles > 0) |
| 3655 | emit_addimm(HOST_CCREG, known_cycles, HOST_CCREG); |
| 3656 | return; |
| 3657 | } |
| 3658 | assem_debug("; muldiv stall unresolved\n"); |
| 3659 | host_tempreg_acquire(); |
| 3660 | emit_readword(&psxRegs.muldivBusyCycle, rtmp); |
| 3661 | emit_addimm(rtmp, -ccadj[i], rtmp); |
| 3662 | emit_sub(rtmp, HOST_CCREG, HOST_TEMPREG); |
| 3663 | emit_cmpimm(HOST_TEMPREG, 37); |
| 3664 | emit_cmovb_reg(rtmp, HOST_CCREG); |
| 3665 | //emit_log_gte_stall(i, 0, reglist); |
| 3666 | host_tempreg_release(); |
| 3667 | } |
| 3668 | |
| 3669 | static void cop2_get_dreg(u_int copr,signed char tl,signed char temp) |
| 3670 | { |
| 3671 | switch (copr) { |
| 3672 | case 1: |
| 3673 | case 3: |
| 3674 | case 5: |
| 3675 | case 8: |
| 3676 | case 9: |
| 3677 | case 10: |
| 3678 | case 11: |
| 3679 | emit_readword(®_cop2d[copr],tl); |
| 3680 | emit_signextend16(tl,tl); |
| 3681 | emit_writeword(tl,®_cop2d[copr]); // hmh |
| 3682 | break; |
| 3683 | case 7: |
| 3684 | case 16: |
| 3685 | case 17: |
| 3686 | case 18: |
| 3687 | case 19: |
| 3688 | emit_readword(®_cop2d[copr],tl); |
| 3689 | emit_andimm(tl,0xffff,tl); |
| 3690 | emit_writeword(tl,®_cop2d[copr]); |
| 3691 | break; |
| 3692 | case 15: |
| 3693 | emit_readword(®_cop2d[14],tl); // SXY2 |
| 3694 | emit_writeword(tl,®_cop2d[copr]); |
| 3695 | break; |
| 3696 | case 28: |
| 3697 | case 29: |
| 3698 | c2op_mfc2_29_assemble(tl,temp); |
| 3699 | break; |
| 3700 | default: |
| 3701 | emit_readword(®_cop2d[copr],tl); |
| 3702 | break; |
| 3703 | } |
| 3704 | } |
| 3705 | |
| 3706 | static void cop2_put_dreg(u_int copr,signed char sl,signed char temp) |
| 3707 | { |
| 3708 | switch (copr) { |
| 3709 | case 15: |
| 3710 | emit_readword(®_cop2d[13],temp); // SXY1 |
| 3711 | emit_writeword(sl,®_cop2d[copr]); |
| 3712 | emit_writeword(temp,®_cop2d[12]); // SXY0 |
| 3713 | emit_readword(®_cop2d[14],temp); // SXY2 |
| 3714 | emit_writeword(sl,®_cop2d[14]); |
| 3715 | emit_writeword(temp,®_cop2d[13]); // SXY1 |
| 3716 | break; |
| 3717 | case 28: |
| 3718 | emit_andimm(sl,0x001f,temp); |
| 3719 | emit_shlimm(temp,7,temp); |
| 3720 | emit_writeword(temp,®_cop2d[9]); |
| 3721 | emit_andimm(sl,0x03e0,temp); |
| 3722 | emit_shlimm(temp,2,temp); |
| 3723 | emit_writeword(temp,®_cop2d[10]); |
| 3724 | emit_andimm(sl,0x7c00,temp); |
| 3725 | emit_shrimm(temp,3,temp); |
| 3726 | emit_writeword(temp,®_cop2d[11]); |
| 3727 | emit_writeword(sl,®_cop2d[28]); |
| 3728 | break; |
| 3729 | case 30: |
| 3730 | emit_xorsar_imm(sl,sl,31,temp); |
| 3731 | #if defined(HAVE_ARMV5) || defined(__aarch64__) |
| 3732 | emit_clz(temp,temp); |
| 3733 | #else |
| 3734 | emit_movs(temp,HOST_TEMPREG); |
| 3735 | emit_movimm(0,temp); |
| 3736 | emit_jeq((int)out+4*4); |
| 3737 | emit_addpl_imm(temp,1,temp); |
| 3738 | emit_lslpls_imm(HOST_TEMPREG,1,HOST_TEMPREG); |
| 3739 | emit_jns((int)out-2*4); |
| 3740 | #endif |
| 3741 | emit_writeword(sl,®_cop2d[30]); |
| 3742 | emit_writeword(temp,®_cop2d[31]); |
| 3743 | break; |
| 3744 | case 31: |
| 3745 | break; |
| 3746 | default: |
| 3747 | emit_writeword(sl,®_cop2d[copr]); |
| 3748 | break; |
| 3749 | } |
| 3750 | } |
| 3751 | |
| 3752 | static void c2ls_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 3753 | { |
| 3754 | int s,tl; |
| 3755 | int ar; |
| 3756 | int offset; |
| 3757 | int memtarget=0,c=0; |
| 3758 | void *jaddr2=NULL; |
| 3759 | enum stub_type type; |
| 3760 | int agr=AGEN1+(i&1); |
| 3761 | int offset_reg = -1; |
| 3762 | int fastio_reg_override = -1; |
| 3763 | u_int reglist=get_host_reglist(i_regs->regmap); |
| 3764 | u_int copr=(source[i]>>16)&0x1f; |
| 3765 | s=get_reg(i_regs->regmap,dops[i].rs1); |
| 3766 | tl=get_reg(i_regs->regmap,FTEMP); |
| 3767 | offset=imm[i]; |
| 3768 | assert(dops[i].rs1>0); |
| 3769 | assert(tl>=0); |
| 3770 | |
| 3771 | if(i_regs->regmap[HOST_CCREG]==CCREG) |
| 3772 | reglist&=~(1<<HOST_CCREG); |
| 3773 | |
| 3774 | // get the address |
| 3775 | if (dops[i].opcode==0x3a) { // SWC2 |
| 3776 | ar=get_reg(i_regs->regmap,agr); |
| 3777 | if(ar<0) ar=get_reg_temp(i_regs->regmap); |
| 3778 | reglist|=1<<ar; |
| 3779 | } else { // LWC2 |
| 3780 | ar=tl; |
| 3781 | } |
| 3782 | if(s>=0) c=(i_regs->wasconst>>s)&1; |
| 3783 | memtarget=c&&(((signed int)(constmap[i][s]+offset))<(signed int)0x80000000+RAM_SIZE); |
| 3784 | if (!offset&&!c&&s>=0) ar=s; |
| 3785 | assert(ar>=0); |
| 3786 | |
| 3787 | cop2_do_stall_check(0, i, i_regs, reglist); |
| 3788 | |
| 3789 | if (dops[i].opcode==0x3a) { // SWC2 |
| 3790 | cop2_get_dreg(copr,tl,-1); |
| 3791 | type=STOREW_STUB; |
| 3792 | } |
| 3793 | else |
| 3794 | type=LOADW_STUB; |
| 3795 | |
| 3796 | if(c&&!memtarget) { |
| 3797 | jaddr2=out; |
| 3798 | emit_jmp(0); // inline_readstub/inline_writestub? |
| 3799 | } |
| 3800 | else { |
| 3801 | if(!c) { |
| 3802 | jaddr2 = emit_fastpath_cmp_jump(i, i_regs, ar, |
| 3803 | &offset_reg, &fastio_reg_override); |
| 3804 | } |
| 3805 | else if (ram_offset && memtarget) { |
| 3806 | offset_reg = get_ro_reg(i_regs, 0); |
| 3807 | } |
| 3808 | switch (dops[i].opcode) { |
| 3809 | case 0x32: { // LWC2 |
| 3810 | int a = ar; |
| 3811 | if (fastio_reg_override >= 0) |
| 3812 | a = fastio_reg_override; |
| 3813 | do_load_word(a, tl, offset_reg); |
| 3814 | break; |
| 3815 | } |
| 3816 | case 0x3a: { // SWC2 |
| 3817 | #ifdef DESTRUCTIVE_SHIFT |
| 3818 | if(!offset&&!c&&s>=0) emit_mov(s,ar); |
| 3819 | #endif |
| 3820 | int a = ar; |
| 3821 | if (fastio_reg_override >= 0) |
| 3822 | a = fastio_reg_override; |
| 3823 | do_store_word(a, 0, tl, offset_reg, 1); |
| 3824 | break; |
| 3825 | } |
| 3826 | default: |
| 3827 | assert(0); |
| 3828 | } |
| 3829 | } |
| 3830 | if (fastio_reg_override == HOST_TEMPREG || offset_reg == HOST_TEMPREG) |
| 3831 | host_tempreg_release(); |
| 3832 | if(jaddr2) |
| 3833 | add_stub_r(type,jaddr2,out,i,ar,i_regs,ccadj_,reglist); |
| 3834 | if(dops[i].opcode==0x3a) // SWC2 |
| 3835 | if(!(i_regs->waswritten&(1<<dops[i].rs1)) && !HACK_ENABLED(NDHACK_NO_SMC_CHECK)) { |
| 3836 | #if defined(HOST_IMM8) |
| 3837 | int ir=get_reg(i_regs->regmap,INVCP); |
| 3838 | assert(ir>=0); |
| 3839 | emit_cmpmem_indexedsr12_reg(ir,ar,1); |
| 3840 | #else |
| 3841 | emit_cmpmem_indexedsr12_imm(invalid_code,ar,1); |
| 3842 | #endif |
| 3843 | #if defined(HAVE_CONDITIONAL_CALL) && !defined(DESTRUCTIVE_SHIFT) |
| 3844 | emit_callne(invalidate_addr_reg[ar]); |
| 3845 | #else |
| 3846 | void *jaddr3 = out; |
| 3847 | emit_jne(0); |
| 3848 | add_stub(INVCODE_STUB,jaddr3,out,reglist|(1<<HOST_CCREG),ar,0,0,0); |
| 3849 | #endif |
| 3850 | } |
| 3851 | if (dops[i].opcode==0x32) { // LWC2 |
| 3852 | host_tempreg_acquire(); |
| 3853 | cop2_put_dreg(copr,tl,HOST_TEMPREG); |
| 3854 | host_tempreg_release(); |
| 3855 | } |
| 3856 | } |
| 3857 | |
| 3858 | static void cop2_assemble(int i, const struct regstat *i_regs) |
| 3859 | { |
| 3860 | u_int copr = (source[i]>>11) & 0x1f; |
| 3861 | signed char temp = get_reg_temp(i_regs->regmap); |
| 3862 | |
| 3863 | if (!HACK_ENABLED(NDHACK_NO_STALLS)) { |
| 3864 | u_int reglist = reglist_exclude(get_host_reglist(i_regs->regmap), temp, -1); |
| 3865 | if (dops[i].opcode2 == 0 || dops[i].opcode2 == 2) { // MFC2/CFC2 |
| 3866 | signed char tl = get_reg(i_regs->regmap, dops[i].rt1); |
| 3867 | reglist = reglist_exclude(reglist, tl, -1); |
| 3868 | } |
| 3869 | cop2_do_stall_check(0, i, i_regs, reglist); |
| 3870 | } |
| 3871 | if (dops[i].opcode2==0) { // MFC2 |
| 3872 | signed char tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 3873 | if(tl>=0&&dops[i].rt1!=0) |
| 3874 | cop2_get_dreg(copr,tl,temp); |
| 3875 | } |
| 3876 | else if (dops[i].opcode2==4) { // MTC2 |
| 3877 | signed char sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 3878 | cop2_put_dreg(copr,sl,temp); |
| 3879 | } |
| 3880 | else if (dops[i].opcode2==2) // CFC2 |
| 3881 | { |
| 3882 | signed char tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 3883 | if(tl>=0&&dops[i].rt1!=0) |
| 3884 | emit_readword(®_cop2c[copr],tl); |
| 3885 | } |
| 3886 | else if (dops[i].opcode2==6) // CTC2 |
| 3887 | { |
| 3888 | signed char sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 3889 | switch(copr) { |
| 3890 | case 4: |
| 3891 | case 12: |
| 3892 | case 20: |
| 3893 | case 26: |
| 3894 | case 27: |
| 3895 | case 29: |
| 3896 | case 30: |
| 3897 | emit_signextend16(sl,temp); |
| 3898 | break; |
| 3899 | case 31: |
| 3900 | c2op_ctc2_31_assemble(sl,temp); |
| 3901 | break; |
| 3902 | default: |
| 3903 | temp=sl; |
| 3904 | break; |
| 3905 | } |
| 3906 | emit_writeword(temp,®_cop2c[copr]); |
| 3907 | assert(sl>=0); |
| 3908 | } |
| 3909 | } |
| 3910 | |
| 3911 | static void do_unalignedwritestub(int n) |
| 3912 | { |
| 3913 | assem_debug("do_unalignedwritestub %x\n",start+stubs[n].a*4); |
| 3914 | literal_pool(256); |
| 3915 | set_jump_target(stubs[n].addr, out); |
| 3916 | |
| 3917 | int i=stubs[n].a; |
| 3918 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
| 3919 | int addr=stubs[n].b; |
| 3920 | u_int reglist=stubs[n].e; |
| 3921 | signed char *i_regmap=i_regs->regmap; |
| 3922 | int temp2=get_reg(i_regmap,FTEMP); |
| 3923 | int rt; |
| 3924 | rt=get_reg(i_regmap,dops[i].rs2); |
| 3925 | assert(rt>=0); |
| 3926 | assert(addr>=0); |
| 3927 | assert(dops[i].opcode==0x2a||dops[i].opcode==0x2e); // SWL/SWR only implemented |
| 3928 | reglist|=(1<<addr); |
| 3929 | reglist&=~(1<<temp2); |
| 3930 | |
| 3931 | // don't bother with it and call write handler |
| 3932 | save_regs(reglist); |
| 3933 | pass_args(addr,rt); |
| 3934 | int cc=get_reg(i_regmap,CCREG); |
| 3935 | if(cc<0) |
| 3936 | emit_loadreg(CCREG,2); |
| 3937 | emit_addimm(cc<0?2:cc,(int)stubs[n].d+1,2); |
| 3938 | emit_far_call((dops[i].opcode==0x2a?jump_handle_swl:jump_handle_swr)); |
| 3939 | emit_addimm(0,-((int)stubs[n].d+1),cc<0?2:cc); |
| 3940 | if(cc<0) |
| 3941 | emit_storereg(CCREG,2); |
| 3942 | restore_regs(reglist); |
| 3943 | emit_jmp(stubs[n].retaddr); // return address |
| 3944 | } |
| 3945 | |
| 3946 | #ifndef multdiv_assemble |
| 3947 | void multdiv_assemble(int i,struct regstat *i_regs) |
| 3948 | { |
| 3949 | printf("Need multdiv_assemble for this architecture.\n"); |
| 3950 | abort(); |
| 3951 | } |
| 3952 | #endif |
| 3953 | |
| 3954 | static void mov_assemble(int i, const struct regstat *i_regs) |
| 3955 | { |
| 3956 | //if(dops[i].opcode2==0x10||dops[i].opcode2==0x12) { // MFHI/MFLO |
| 3957 | //if(dops[i].opcode2==0x11||dops[i].opcode2==0x13) { // MTHI/MTLO |
| 3958 | if(dops[i].rt1) { |
| 3959 | signed char sl,tl; |
| 3960 | tl=get_reg(i_regs->regmap,dops[i].rt1); |
| 3961 | //assert(tl>=0); |
| 3962 | if(tl>=0) { |
| 3963 | sl=get_reg(i_regs->regmap,dops[i].rs1); |
| 3964 | if(sl>=0) emit_mov(sl,tl); |
| 3965 | else emit_loadreg(dops[i].rs1,tl); |
| 3966 | } |
| 3967 | } |
| 3968 | if (dops[i].rs1 == HIREG || dops[i].rs1 == LOREG) // MFHI/MFLO |
| 3969 | multdiv_do_stall(i, i_regs); |
| 3970 | } |
| 3971 | |
| 3972 | // call interpreter, exception handler, things that change pc/regs/cycles ... |
| 3973 | static void call_c_cpu_handler(int i, const struct regstat *i_regs, int ccadj_, u_int pc, void *func) |
| 3974 | { |
| 3975 | signed char ccreg=get_reg(i_regs->regmap,CCREG); |
| 3976 | assert(ccreg==HOST_CCREG); |
| 3977 | assert(!is_delayslot); |
| 3978 | (void)ccreg; |
| 3979 | |
| 3980 | emit_movimm(pc,3); // Get PC |
| 3981 | emit_readword(&last_count,2); |
| 3982 | emit_writeword(3,&psxRegs.pc); |
| 3983 | emit_addimm(HOST_CCREG,ccadj_,HOST_CCREG); |
| 3984 | emit_add(2,HOST_CCREG,2); |
| 3985 | emit_writeword(2,&psxRegs.cycle); |
| 3986 | emit_far_call(func); |
| 3987 | emit_far_jump(jump_to_new_pc); |
| 3988 | } |
| 3989 | |
| 3990 | static void syscall_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 3991 | { |
| 3992 | // 'break' tends to be littered around to catch things like |
| 3993 | // division by 0 and is almost never executed, so don't emit much code here |
| 3994 | void *func = (dops[i].opcode2 == 0x0C) |
| 3995 | ? (is_delayslot ? jump_syscall_ds : jump_syscall) |
| 3996 | : (is_delayslot ? jump_break_ds : jump_break); |
| 3997 | assert(get_reg(i_regs->regmap, CCREG) == HOST_CCREG); |
| 3998 | emit_movimm(start + i*4, 2); // pc |
| 3999 | emit_addimm(HOST_CCREG, ccadj_ + CLOCK_ADJUST(1), HOST_CCREG); |
| 4000 | emit_far_jump(func); |
| 4001 | } |
| 4002 | |
| 4003 | static void hlecall_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 4004 | { |
| 4005 | void *hlefunc = psxNULL; |
| 4006 | uint32_t hleCode = source[i] & 0x03ffffff; |
| 4007 | if (hleCode < ARRAY_SIZE(psxHLEt)) |
| 4008 | hlefunc = psxHLEt[hleCode]; |
| 4009 | |
| 4010 | call_c_cpu_handler(i, i_regs, ccadj_, start + i*4+4, hlefunc); |
| 4011 | } |
| 4012 | |
| 4013 | static void intcall_assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 4014 | { |
| 4015 | call_c_cpu_handler(i, i_regs, ccadj_, start + i*4, execI); |
| 4016 | } |
| 4017 | |
| 4018 | static void speculate_mov(int rs,int rt) |
| 4019 | { |
| 4020 | if(rt!=0) { |
| 4021 | smrv_strong_next|=1<<rt; |
| 4022 | smrv[rt]=smrv[rs]; |
| 4023 | } |
| 4024 | } |
| 4025 | |
| 4026 | static void speculate_mov_weak(int rs,int rt) |
| 4027 | { |
| 4028 | if(rt!=0) { |
| 4029 | smrv_weak_next|=1<<rt; |
| 4030 | smrv[rt]=smrv[rs]; |
| 4031 | } |
| 4032 | } |
| 4033 | |
| 4034 | static void speculate_register_values(int i) |
| 4035 | { |
| 4036 | if(i==0) { |
| 4037 | memcpy(smrv,psxRegs.GPR.r,sizeof(smrv)); |
| 4038 | // gp,sp are likely to stay the same throughout the block |
| 4039 | smrv_strong_next=(1<<28)|(1<<29)|(1<<30); |
| 4040 | smrv_weak_next=~smrv_strong_next; |
| 4041 | //printf(" llr %08x\n", smrv[4]); |
| 4042 | } |
| 4043 | smrv_strong=smrv_strong_next; |
| 4044 | smrv_weak=smrv_weak_next; |
| 4045 | switch(dops[i].itype) { |
| 4046 | case ALU: |
| 4047 | if ((smrv_strong>>dops[i].rs1)&1) speculate_mov(dops[i].rs1,dops[i].rt1); |
| 4048 | else if((smrv_strong>>dops[i].rs2)&1) speculate_mov(dops[i].rs2,dops[i].rt1); |
| 4049 | else if((smrv_weak>>dops[i].rs1)&1) speculate_mov_weak(dops[i].rs1,dops[i].rt1); |
| 4050 | else if((smrv_weak>>dops[i].rs2)&1) speculate_mov_weak(dops[i].rs2,dops[i].rt1); |
| 4051 | else { |
| 4052 | smrv_strong_next&=~(1<<dops[i].rt1); |
| 4053 | smrv_weak_next&=~(1<<dops[i].rt1); |
| 4054 | } |
| 4055 | break; |
| 4056 | case SHIFTIMM: |
| 4057 | smrv_strong_next&=~(1<<dops[i].rt1); |
| 4058 | smrv_weak_next&=~(1<<dops[i].rt1); |
| 4059 | // fallthrough |
| 4060 | case IMM16: |
| 4061 | if(dops[i].rt1&&is_const(®s[i],dops[i].rt1)) { |
| 4062 | int value,hr=get_reg(regs[i].regmap,dops[i].rt1); |
| 4063 | if(hr>=0) { |
| 4064 | if(get_final_value(hr,i,&value)) |
| 4065 | smrv[dops[i].rt1]=value; |
| 4066 | else smrv[dops[i].rt1]=constmap[i][hr]; |
| 4067 | smrv_strong_next|=1<<dops[i].rt1; |
| 4068 | } |
| 4069 | } |
| 4070 | else { |
| 4071 | if ((smrv_strong>>dops[i].rs1)&1) speculate_mov(dops[i].rs1,dops[i].rt1); |
| 4072 | else if((smrv_weak>>dops[i].rs1)&1) speculate_mov_weak(dops[i].rs1,dops[i].rt1); |
| 4073 | } |
| 4074 | break; |
| 4075 | case LOAD: |
| 4076 | if(start<0x2000&&(dops[i].rt1==26||(smrv[dops[i].rt1]>>24)==0xa0)) { |
| 4077 | // special case for BIOS |
| 4078 | smrv[dops[i].rt1]=0xa0000000; |
| 4079 | smrv_strong_next|=1<<dops[i].rt1; |
| 4080 | break; |
| 4081 | } |
| 4082 | // fallthrough |
| 4083 | case SHIFT: |
| 4084 | case LOADLR: |
| 4085 | case MOV: |
| 4086 | smrv_strong_next&=~(1<<dops[i].rt1); |
| 4087 | smrv_weak_next&=~(1<<dops[i].rt1); |
| 4088 | break; |
| 4089 | case COP0: |
| 4090 | case COP2: |
| 4091 | if(dops[i].opcode2==0||dops[i].opcode2==2) { // MFC/CFC |
| 4092 | smrv_strong_next&=~(1<<dops[i].rt1); |
| 4093 | smrv_weak_next&=~(1<<dops[i].rt1); |
| 4094 | } |
| 4095 | break; |
| 4096 | case C2LS: |
| 4097 | if (dops[i].opcode==0x32) { // LWC2 |
| 4098 | smrv_strong_next&=~(1<<dops[i].rt1); |
| 4099 | smrv_weak_next&=~(1<<dops[i].rt1); |
| 4100 | } |
| 4101 | break; |
| 4102 | } |
| 4103 | #if 0 |
| 4104 | int r=4; |
| 4105 | printf("x %08x %08x %d %d c %08x %08x\n",smrv[r],start+i*4, |
| 4106 | ((smrv_strong>>r)&1),(smrv_weak>>r)&1,regs[i].isconst,regs[i].wasconst); |
| 4107 | #endif |
| 4108 | } |
| 4109 | |
| 4110 | static void ujump_assemble(int i, const struct regstat *i_regs); |
| 4111 | static void rjump_assemble(int i, const struct regstat *i_regs); |
| 4112 | static void cjump_assemble(int i, const struct regstat *i_regs); |
| 4113 | static void sjump_assemble(int i, const struct regstat *i_regs); |
| 4114 | static void pagespan_assemble(int i, const struct regstat *i_regs); |
| 4115 | |
| 4116 | static int assemble(int i, const struct regstat *i_regs, int ccadj_) |
| 4117 | { |
| 4118 | int ds = 0; |
| 4119 | switch (dops[i].itype) { |
| 4120 | case ALU: |
| 4121 | alu_assemble(i, i_regs); |
| 4122 | break; |
| 4123 | case IMM16: |
| 4124 | imm16_assemble(i, i_regs); |
| 4125 | break; |
| 4126 | case SHIFT: |
| 4127 | shift_assemble(i, i_regs); |
| 4128 | break; |
| 4129 | case SHIFTIMM: |
| 4130 | shiftimm_assemble(i, i_regs); |
| 4131 | break; |
| 4132 | case LOAD: |
| 4133 | load_assemble(i, i_regs, ccadj_); |
| 4134 | break; |
| 4135 | case LOADLR: |
| 4136 | loadlr_assemble(i, i_regs, ccadj_); |
| 4137 | break; |
| 4138 | case STORE: |
| 4139 | store_assemble(i, i_regs, ccadj_); |
| 4140 | break; |
| 4141 | case STORELR: |
| 4142 | storelr_assemble(i, i_regs, ccadj_); |
| 4143 | break; |
| 4144 | case COP0: |
| 4145 | cop0_assemble(i, i_regs, ccadj_); |
| 4146 | break; |
| 4147 | case COP1: |
| 4148 | cop1_assemble(i, i_regs); |
| 4149 | break; |
| 4150 | case C1LS: |
| 4151 | c1ls_assemble(i, i_regs); |
| 4152 | break; |
| 4153 | case COP2: |
| 4154 | cop2_assemble(i, i_regs); |
| 4155 | break; |
| 4156 | case C2LS: |
| 4157 | c2ls_assemble(i, i_regs, ccadj_); |
| 4158 | break; |
| 4159 | case C2OP: |
| 4160 | c2op_assemble(i, i_regs); |
| 4161 | break; |
| 4162 | case MULTDIV: |
| 4163 | multdiv_assemble(i, i_regs); |
| 4164 | multdiv_prepare_stall(i, i_regs, ccadj_); |
| 4165 | break; |
| 4166 | case MOV: |
| 4167 | mov_assemble(i, i_regs); |
| 4168 | break; |
| 4169 | case SYSCALL: |
| 4170 | syscall_assemble(i, i_regs, ccadj_); |
| 4171 | break; |
| 4172 | case HLECALL: |
| 4173 | hlecall_assemble(i, i_regs, ccadj_); |
| 4174 | break; |
| 4175 | case INTCALL: |
| 4176 | intcall_assemble(i, i_regs, ccadj_); |
| 4177 | break; |
| 4178 | case UJUMP: |
| 4179 | ujump_assemble(i, i_regs); |
| 4180 | ds = 1; |
| 4181 | break; |
| 4182 | case RJUMP: |
| 4183 | rjump_assemble(i, i_regs); |
| 4184 | ds = 1; |
| 4185 | break; |
| 4186 | case CJUMP: |
| 4187 | cjump_assemble(i, i_regs); |
| 4188 | ds = 1; |
| 4189 | break; |
| 4190 | case SJUMP: |
| 4191 | sjump_assemble(i, i_regs); |
| 4192 | ds = 1; |
| 4193 | break; |
| 4194 | case SPAN: |
| 4195 | pagespan_assemble(i, i_regs); |
| 4196 | break; |
| 4197 | case NOP: |
| 4198 | case OTHER: |
| 4199 | case NI: |
| 4200 | // not handled, just skip |
| 4201 | break; |
| 4202 | default: |
| 4203 | assert(0); |
| 4204 | } |
| 4205 | return ds; |
| 4206 | } |
| 4207 | |
| 4208 | static void ds_assemble(int i, const struct regstat *i_regs) |
| 4209 | { |
| 4210 | speculate_register_values(i); |
| 4211 | is_delayslot = 1; |
| 4212 | switch (dops[i].itype) { |
| 4213 | case SYSCALL: |
| 4214 | case HLECALL: |
| 4215 | case INTCALL: |
| 4216 | case SPAN: |
| 4217 | case UJUMP: |
| 4218 | case RJUMP: |
| 4219 | case CJUMP: |
| 4220 | case SJUMP: |
| 4221 | SysPrintf("Jump in the delay slot. This is probably a bug.\n"); |
| 4222 | break; |
| 4223 | default: |
| 4224 | assemble(i, i_regs, ccadj[i]); |
| 4225 | } |
| 4226 | is_delayslot = 0; |
| 4227 | } |
| 4228 | |
| 4229 | // Is the branch target a valid internal jump? |
| 4230 | static int internal_branch(int addr) |
| 4231 | { |
| 4232 | if(addr&1) return 0; // Indirect (register) jump |
| 4233 | if(addr>=start && addr<start+slen*4-4) |
| 4234 | { |
| 4235 | return 1; |
| 4236 | } |
| 4237 | return 0; |
| 4238 | } |
| 4239 | |
| 4240 | static void wb_invalidate(signed char pre[],signed char entry[],uint64_t dirty,uint64_t u) |
| 4241 | { |
| 4242 | int hr; |
| 4243 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4244 | if(hr!=EXCLUDE_REG) { |
| 4245 | if(pre[hr]!=entry[hr]) { |
| 4246 | if(pre[hr]>=0) { |
| 4247 | if((dirty>>hr)&1) { |
| 4248 | if(get_reg(entry,pre[hr])<0) { |
| 4249 | assert(pre[hr]<64); |
| 4250 | if(!((u>>pre[hr])&1)) |
| 4251 | emit_storereg(pre[hr],hr); |
| 4252 | } |
| 4253 | } |
| 4254 | } |
| 4255 | } |
| 4256 | } |
| 4257 | } |
| 4258 | // Move from one register to another (no writeback) |
| 4259 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4260 | if(hr!=EXCLUDE_REG) { |
| 4261 | if(pre[hr]!=entry[hr]) { |
| 4262 | if(pre[hr]>=0&&pre[hr]<TEMPREG) { |
| 4263 | int nr; |
| 4264 | if((nr=get_reg(entry,pre[hr]))>=0) { |
| 4265 | emit_mov(hr,nr); |
| 4266 | } |
| 4267 | } |
| 4268 | } |
| 4269 | } |
| 4270 | } |
| 4271 | } |
| 4272 | |
| 4273 | // Load the specified registers |
| 4274 | // This only loads the registers given as arguments because |
| 4275 | // we don't want to load things that will be overwritten |
| 4276 | static inline void load_reg(signed char entry[], signed char regmap[], int rs) |
| 4277 | { |
| 4278 | int hr = get_reg(regmap, rs); |
| 4279 | if (hr >= 0 && entry[hr] != regmap[hr]) |
| 4280 | emit_loadreg(regmap[hr], hr); |
| 4281 | } |
| 4282 | |
| 4283 | static void load_regs(signed char entry[], signed char regmap[], int rs1, int rs2) |
| 4284 | { |
| 4285 | load_reg(entry, regmap, rs1); |
| 4286 | if (rs1 != rs2) |
| 4287 | load_reg(entry, regmap, rs2); |
| 4288 | } |
| 4289 | |
| 4290 | // Load registers prior to the start of a loop |
| 4291 | // so that they are not loaded within the loop |
| 4292 | static void loop_preload(signed char pre[],signed char entry[]) |
| 4293 | { |
| 4294 | int hr; |
| 4295 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 4296 | int r = entry[hr]; |
| 4297 | if (r >= 0 && pre[hr] != r && get_reg(pre, r) < 0) { |
| 4298 | assem_debug("loop preload:\n"); |
| 4299 | if (r < TEMPREG) |
| 4300 | emit_loadreg(r, hr); |
| 4301 | } |
| 4302 | } |
| 4303 | } |
| 4304 | |
| 4305 | // Generate address for load/store instruction |
| 4306 | // goes to AGEN for writes, FTEMP for LOADLR and cop1/2 loads |
| 4307 | static void address_generation(int i, const struct regstat *i_regs, signed char entry[]) |
| 4308 | { |
| 4309 | if (dops[i].is_load || dops[i].is_store) { |
| 4310 | int ra=-1; |
| 4311 | int agr=AGEN1+(i&1); |
| 4312 | if(dops[i].itype==LOAD) { |
| 4313 | ra=get_reg(i_regs->regmap,dops[i].rt1); |
| 4314 | if(ra<0) ra=get_reg_temp(i_regs->regmap); |
| 4315 | assert(ra>=0); |
| 4316 | } |
| 4317 | if(dops[i].itype==LOADLR) { |
| 4318 | ra=get_reg(i_regs->regmap,FTEMP); |
| 4319 | } |
| 4320 | if(dops[i].itype==STORE||dops[i].itype==STORELR) { |
| 4321 | ra=get_reg(i_regs->regmap,agr); |
| 4322 | if(ra<0) ra=get_reg_temp(i_regs->regmap); |
| 4323 | } |
| 4324 | if(dops[i].itype==C2LS) { |
| 4325 | if ((dops[i].opcode&0x3b)==0x31||(dops[i].opcode&0x3b)==0x32) // LWC1/LDC1/LWC2/LDC2 |
| 4326 | ra=get_reg(i_regs->regmap,FTEMP); |
| 4327 | else { // SWC1/SDC1/SWC2/SDC2 |
| 4328 | ra=get_reg(i_regs->regmap,agr); |
| 4329 | if(ra<0) ra=get_reg_temp(i_regs->regmap); |
| 4330 | } |
| 4331 | } |
| 4332 | int rs=get_reg(i_regs->regmap,dops[i].rs1); |
| 4333 | if(ra>=0) { |
| 4334 | int offset=imm[i]; |
| 4335 | int c=(i_regs->wasconst>>rs)&1; |
| 4336 | if(dops[i].rs1==0) { |
| 4337 | // Using r0 as a base address |
| 4338 | if(!entry||entry[ra]!=agr) { |
| 4339 | if (dops[i].opcode==0x22||dops[i].opcode==0x26) { |
| 4340 | emit_movimm(offset&0xFFFFFFFC,ra); // LWL/LWR |
| 4341 | }else if (dops[i].opcode==0x1a||dops[i].opcode==0x1b) { |
| 4342 | emit_movimm(offset&0xFFFFFFF8,ra); // LDL/LDR |
| 4343 | }else{ |
| 4344 | emit_movimm(offset,ra); |
| 4345 | } |
| 4346 | } // else did it in the previous cycle |
| 4347 | } |
| 4348 | else if(rs<0) { |
| 4349 | if(!entry||entry[ra]!=dops[i].rs1) |
| 4350 | emit_loadreg(dops[i].rs1,ra); |
| 4351 | //if(!entry||entry[ra]!=dops[i].rs1) |
| 4352 | // printf("poor load scheduling!\n"); |
| 4353 | } |
| 4354 | else if(c) { |
| 4355 | if(dops[i].rs1!=dops[i].rt1||dops[i].itype!=LOAD) { |
| 4356 | if(!entry||entry[ra]!=agr) { |
| 4357 | if (dops[i].opcode==0x22||dops[i].opcode==0x26) { |
| 4358 | emit_movimm((constmap[i][rs]+offset)&0xFFFFFFFC,ra); // LWL/LWR |
| 4359 | }else if (dops[i].opcode==0x1a||dops[i].opcode==0x1b) { |
| 4360 | emit_movimm((constmap[i][rs]+offset)&0xFFFFFFF8,ra); // LDL/LDR |
| 4361 | }else{ |
| 4362 | emit_movimm(constmap[i][rs]+offset,ra); |
| 4363 | regs[i].loadedconst|=1<<ra; |
| 4364 | } |
| 4365 | } // else did it in the previous cycle |
| 4366 | } // else load_consts already did it |
| 4367 | } |
| 4368 | if(offset&&!c&&dops[i].rs1) { |
| 4369 | if(rs>=0) { |
| 4370 | emit_addimm(rs,offset,ra); |
| 4371 | }else{ |
| 4372 | emit_addimm(ra,offset,ra); |
| 4373 | } |
| 4374 | } |
| 4375 | } |
| 4376 | } |
| 4377 | // Preload constants for next instruction |
| 4378 | if (dops[i+1].is_load || dops[i+1].is_store) { |
| 4379 | int agr,ra; |
| 4380 | // Actual address |
| 4381 | agr=AGEN1+((i+1)&1); |
| 4382 | ra=get_reg(i_regs->regmap,agr); |
| 4383 | if(ra>=0) { |
| 4384 | int rs=get_reg(regs[i+1].regmap,dops[i+1].rs1); |
| 4385 | int offset=imm[i+1]; |
| 4386 | int c=(regs[i+1].wasconst>>rs)&1; |
| 4387 | if(c&&(dops[i+1].rs1!=dops[i+1].rt1||dops[i+1].itype!=LOAD)) { |
| 4388 | if (dops[i+1].opcode==0x22||dops[i+1].opcode==0x26) { |
| 4389 | emit_movimm((constmap[i+1][rs]+offset)&0xFFFFFFFC,ra); // LWL/LWR |
| 4390 | }else if (dops[i+1].opcode==0x1a||dops[i+1].opcode==0x1b) { |
| 4391 | emit_movimm((constmap[i+1][rs]+offset)&0xFFFFFFF8,ra); // LDL/LDR |
| 4392 | }else{ |
| 4393 | emit_movimm(constmap[i+1][rs]+offset,ra); |
| 4394 | regs[i+1].loadedconst|=1<<ra; |
| 4395 | } |
| 4396 | } |
| 4397 | else if(dops[i+1].rs1==0) { |
| 4398 | // Using r0 as a base address |
| 4399 | if (dops[i+1].opcode==0x22||dops[i+1].opcode==0x26) { |
| 4400 | emit_movimm(offset&0xFFFFFFFC,ra); // LWL/LWR |
| 4401 | }else if (dops[i+1].opcode==0x1a||dops[i+1].opcode==0x1b) { |
| 4402 | emit_movimm(offset&0xFFFFFFF8,ra); // LDL/LDR |
| 4403 | }else{ |
| 4404 | emit_movimm(offset,ra); |
| 4405 | } |
| 4406 | } |
| 4407 | } |
| 4408 | } |
| 4409 | } |
| 4410 | |
| 4411 | static int get_final_value(int hr, int i, int *value) |
| 4412 | { |
| 4413 | int reg=regs[i].regmap[hr]; |
| 4414 | while(i<slen-1) { |
| 4415 | if(regs[i+1].regmap[hr]!=reg) break; |
| 4416 | if(!((regs[i+1].isconst>>hr)&1)) break; |
| 4417 | if(dops[i+1].bt) break; |
| 4418 | i++; |
| 4419 | } |
| 4420 | if(i<slen-1) { |
| 4421 | if (dops[i].is_jump) { |
| 4422 | *value=constmap[i][hr]; |
| 4423 | return 1; |
| 4424 | } |
| 4425 | if(!dops[i+1].bt) { |
| 4426 | if (dops[i+1].is_jump) { |
| 4427 | // Load in delay slot, out-of-order execution |
| 4428 | if(dops[i+2].itype==LOAD&&dops[i+2].rs1==reg&&dops[i+2].rt1==reg&&((regs[i+1].wasconst>>hr)&1)) |
| 4429 | { |
| 4430 | // Precompute load address |
| 4431 | *value=constmap[i][hr]+imm[i+2]; |
| 4432 | return 1; |
| 4433 | } |
| 4434 | } |
| 4435 | if(dops[i+1].itype==LOAD&&dops[i+1].rs1==reg&&dops[i+1].rt1==reg) |
| 4436 | { |
| 4437 | // Precompute load address |
| 4438 | *value=constmap[i][hr]+imm[i+1]; |
| 4439 | //printf("c=%x imm=%lx\n",(long)constmap[i][hr],imm[i+1]); |
| 4440 | return 1; |
| 4441 | } |
| 4442 | } |
| 4443 | } |
| 4444 | *value=constmap[i][hr]; |
| 4445 | //printf("c=%lx\n",(long)constmap[i][hr]); |
| 4446 | if(i==slen-1) return 1; |
| 4447 | assert(reg < 64); |
| 4448 | return !((unneeded_reg[i+1]>>reg)&1); |
| 4449 | } |
| 4450 | |
| 4451 | // Load registers with known constants |
| 4452 | static void load_consts(signed char pre[],signed char regmap[],int i) |
| 4453 | { |
| 4454 | int hr,hr2; |
| 4455 | // propagate loaded constant flags |
| 4456 | if(i==0||dops[i].bt) |
| 4457 | regs[i].loadedconst=0; |
| 4458 | else { |
| 4459 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4460 | if(hr!=EXCLUDE_REG&®map[hr]>=0&&((regs[i-1].isconst>>hr)&1)&&pre[hr]==regmap[hr] |
| 4461 | &®map[hr]==regs[i-1].regmap[hr]&&((regs[i-1].loadedconst>>hr)&1)) |
| 4462 | { |
| 4463 | regs[i].loadedconst|=1<<hr; |
| 4464 | } |
| 4465 | } |
| 4466 | } |
| 4467 | // Load 32-bit regs |
| 4468 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4469 | if(hr!=EXCLUDE_REG&®map[hr]>=0) { |
| 4470 | //if(entry[hr]!=regmap[hr]) { |
| 4471 | if(!((regs[i].loadedconst>>hr)&1)) { |
| 4472 | assert(regmap[hr]<64); |
| 4473 | if(((regs[i].isconst>>hr)&1)&®map[hr]>0) { |
| 4474 | int value,similar=0; |
| 4475 | if(get_final_value(hr,i,&value)) { |
| 4476 | // see if some other register has similar value |
| 4477 | for(hr2=0;hr2<HOST_REGS;hr2++) { |
| 4478 | if(hr2!=EXCLUDE_REG&&((regs[i].loadedconst>>hr2)&1)) { |
| 4479 | if(is_similar_value(value,constmap[i][hr2])) { |
| 4480 | similar=1; |
| 4481 | break; |
| 4482 | } |
| 4483 | } |
| 4484 | } |
| 4485 | if(similar) { |
| 4486 | int value2; |
| 4487 | if(get_final_value(hr2,i,&value2)) // is this needed? |
| 4488 | emit_movimm_from(value2,hr2,value,hr); |
| 4489 | else |
| 4490 | emit_movimm(value,hr); |
| 4491 | } |
| 4492 | else if(value==0) { |
| 4493 | emit_zeroreg(hr); |
| 4494 | } |
| 4495 | else { |
| 4496 | emit_movimm(value,hr); |
| 4497 | } |
| 4498 | } |
| 4499 | regs[i].loadedconst|=1<<hr; |
| 4500 | } |
| 4501 | } |
| 4502 | } |
| 4503 | } |
| 4504 | } |
| 4505 | |
| 4506 | static void load_all_consts(const signed char regmap[], u_int dirty, int i) |
| 4507 | { |
| 4508 | int hr; |
| 4509 | // Load 32-bit regs |
| 4510 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4511 | if(hr!=EXCLUDE_REG&®map[hr]>=0&&((dirty>>hr)&1)) { |
| 4512 | assert(regmap[hr] < 64); |
| 4513 | if(((regs[i].isconst>>hr)&1)&®map[hr]>0) { |
| 4514 | int value=constmap[i][hr]; |
| 4515 | if(value==0) { |
| 4516 | emit_zeroreg(hr); |
| 4517 | } |
| 4518 | else { |
| 4519 | emit_movimm(value,hr); |
| 4520 | } |
| 4521 | } |
| 4522 | } |
| 4523 | } |
| 4524 | } |
| 4525 | |
| 4526 | // Write out all dirty registers (except cycle count) |
| 4527 | static void wb_dirtys(const signed char i_regmap[], uint64_t i_dirty) |
| 4528 | { |
| 4529 | int hr; |
| 4530 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4531 | if(hr!=EXCLUDE_REG) { |
| 4532 | if(i_regmap[hr]>0) { |
| 4533 | if(i_regmap[hr]!=CCREG) { |
| 4534 | if((i_dirty>>hr)&1) { |
| 4535 | assert(i_regmap[hr]<64); |
| 4536 | emit_storereg(i_regmap[hr],hr); |
| 4537 | } |
| 4538 | } |
| 4539 | } |
| 4540 | } |
| 4541 | } |
| 4542 | } |
| 4543 | |
| 4544 | // Write out dirty registers that we need to reload (pair with load_needed_regs) |
| 4545 | // This writes the registers not written by store_regs_bt |
| 4546 | static void wb_needed_dirtys(const signed char i_regmap[], uint64_t i_dirty, int addr) |
| 4547 | { |
| 4548 | int hr; |
| 4549 | int t=(addr-start)>>2; |
| 4550 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4551 | if(hr!=EXCLUDE_REG) { |
| 4552 | if(i_regmap[hr]>0) { |
| 4553 | if(i_regmap[hr]!=CCREG) { |
| 4554 | if(i_regmap[hr]==regs[t].regmap_entry[hr] && ((regs[t].dirty>>hr)&1)) { |
| 4555 | if((i_dirty>>hr)&1) { |
| 4556 | assert(i_regmap[hr]<64); |
| 4557 | emit_storereg(i_regmap[hr],hr); |
| 4558 | } |
| 4559 | } |
| 4560 | } |
| 4561 | } |
| 4562 | } |
| 4563 | } |
| 4564 | } |
| 4565 | |
| 4566 | // Load all registers (except cycle count) |
| 4567 | static void load_all_regs(const signed char i_regmap[]) |
| 4568 | { |
| 4569 | int hr; |
| 4570 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4571 | if(hr!=EXCLUDE_REG) { |
| 4572 | if(i_regmap[hr]==0) { |
| 4573 | emit_zeroreg(hr); |
| 4574 | } |
| 4575 | else |
| 4576 | if(i_regmap[hr]>0 && i_regmap[hr]<TEMPREG && i_regmap[hr]!=CCREG) |
| 4577 | { |
| 4578 | emit_loadreg(i_regmap[hr],hr); |
| 4579 | } |
| 4580 | } |
| 4581 | } |
| 4582 | } |
| 4583 | |
| 4584 | // Load all current registers also needed by next instruction |
| 4585 | static void load_needed_regs(const signed char i_regmap[], const signed char next_regmap[]) |
| 4586 | { |
| 4587 | int hr; |
| 4588 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4589 | if(hr!=EXCLUDE_REG) { |
| 4590 | if(get_reg(next_regmap,i_regmap[hr])>=0) { |
| 4591 | if(i_regmap[hr]==0) { |
| 4592 | emit_zeroreg(hr); |
| 4593 | } |
| 4594 | else |
| 4595 | if(i_regmap[hr]>0 && i_regmap[hr]<TEMPREG && i_regmap[hr]!=CCREG) |
| 4596 | { |
| 4597 | emit_loadreg(i_regmap[hr],hr); |
| 4598 | } |
| 4599 | } |
| 4600 | } |
| 4601 | } |
| 4602 | } |
| 4603 | |
| 4604 | // Load all regs, storing cycle count if necessary |
| 4605 | static void load_regs_entry(int t) |
| 4606 | { |
| 4607 | int hr; |
| 4608 | if(dops[t].is_ds) emit_addimm(HOST_CCREG,CLOCK_ADJUST(1),HOST_CCREG); |
| 4609 | else if(ccadj[t]) emit_addimm(HOST_CCREG,-ccadj[t],HOST_CCREG); |
| 4610 | if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) { |
| 4611 | emit_storereg(CCREG,HOST_CCREG); |
| 4612 | } |
| 4613 | // Load 32-bit regs |
| 4614 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4615 | if(regs[t].regmap_entry[hr]>=0&®s[t].regmap_entry[hr]<TEMPREG) { |
| 4616 | if(regs[t].regmap_entry[hr]==0) { |
| 4617 | emit_zeroreg(hr); |
| 4618 | } |
| 4619 | else if(regs[t].regmap_entry[hr]!=CCREG) |
| 4620 | { |
| 4621 | emit_loadreg(regs[t].regmap_entry[hr],hr); |
| 4622 | } |
| 4623 | } |
| 4624 | } |
| 4625 | } |
| 4626 | |
| 4627 | // Store dirty registers prior to branch |
| 4628 | static void store_regs_bt(signed char i_regmap[],uint64_t i_dirty,int addr) |
| 4629 | { |
| 4630 | if(internal_branch(addr)) |
| 4631 | { |
| 4632 | int t=(addr-start)>>2; |
| 4633 | int hr; |
| 4634 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4635 | if(hr!=EXCLUDE_REG) { |
| 4636 | if(i_regmap[hr]>0 && i_regmap[hr]!=CCREG) { |
| 4637 | if(i_regmap[hr]!=regs[t].regmap_entry[hr] || !((regs[t].dirty>>hr)&1)) { |
| 4638 | if((i_dirty>>hr)&1) { |
| 4639 | assert(i_regmap[hr]<64); |
| 4640 | if(!((unneeded_reg[t]>>i_regmap[hr])&1)) |
| 4641 | emit_storereg(i_regmap[hr],hr); |
| 4642 | } |
| 4643 | } |
| 4644 | } |
| 4645 | } |
| 4646 | } |
| 4647 | } |
| 4648 | else |
| 4649 | { |
| 4650 | // Branch out of this block, write out all dirty regs |
| 4651 | wb_dirtys(i_regmap,i_dirty); |
| 4652 | } |
| 4653 | } |
| 4654 | |
| 4655 | // Load all needed registers for branch target |
| 4656 | static void load_regs_bt(signed char i_regmap[],uint64_t i_dirty,int addr) |
| 4657 | { |
| 4658 | //if(addr>=start && addr<(start+slen*4)) |
| 4659 | if(internal_branch(addr)) |
| 4660 | { |
| 4661 | int t=(addr-start)>>2; |
| 4662 | int hr; |
| 4663 | // Store the cycle count before loading something else |
| 4664 | if(i_regmap[HOST_CCREG]!=CCREG) { |
| 4665 | assert(i_regmap[HOST_CCREG]==-1); |
| 4666 | } |
| 4667 | if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) { |
| 4668 | emit_storereg(CCREG,HOST_CCREG); |
| 4669 | } |
| 4670 | // Load 32-bit regs |
| 4671 | for(hr=0;hr<HOST_REGS;hr++) { |
| 4672 | if(hr!=EXCLUDE_REG&®s[t].regmap_entry[hr]>=0&®s[t].regmap_entry[hr]<TEMPREG) { |
| 4673 | if(i_regmap[hr]!=regs[t].regmap_entry[hr]) { |
| 4674 | if(regs[t].regmap_entry[hr]==0) { |
| 4675 | emit_zeroreg(hr); |
| 4676 | } |
| 4677 | else if(regs[t].regmap_entry[hr]!=CCREG) |
| 4678 | { |
| 4679 | emit_loadreg(regs[t].regmap_entry[hr],hr); |
| 4680 | } |
| 4681 | } |
| 4682 | } |
| 4683 | } |
| 4684 | } |
| 4685 | } |
| 4686 | |
| 4687 | static int match_bt(signed char i_regmap[],uint64_t i_dirty,int addr) |
| 4688 | { |
| 4689 | if(addr>=start && addr<start+slen*4-4) |
| 4690 | { |
| 4691 | int t=(addr-start)>>2; |
| 4692 | int hr; |
| 4693 | if(regs[t].regmap_entry[HOST_CCREG]!=CCREG) return 0; |
| 4694 | for(hr=0;hr<HOST_REGS;hr++) |
| 4695 | { |
| 4696 | if(hr!=EXCLUDE_REG) |
| 4697 | { |
| 4698 | if(i_regmap[hr]!=regs[t].regmap_entry[hr]) |
| 4699 | { |
| 4700 | if(regs[t].regmap_entry[hr]>=0&&(regs[t].regmap_entry[hr]|64)<TEMPREG+64) |
| 4701 | { |
| 4702 | return 0; |
| 4703 | } |
| 4704 | else |
| 4705 | if((i_dirty>>hr)&1) |
| 4706 | { |
| 4707 | if(i_regmap[hr]<TEMPREG) |
| 4708 | { |
| 4709 | if(!((unneeded_reg[t]>>i_regmap[hr])&1)) |
| 4710 | return 0; |
| 4711 | } |
| 4712 | else if(i_regmap[hr]>=64&&i_regmap[hr]<TEMPREG+64) |
| 4713 | { |
| 4714 | assert(0); |
| 4715 | } |
| 4716 | } |
| 4717 | } |
| 4718 | else // Same register but is it 32-bit or dirty? |
| 4719 | if(i_regmap[hr]>=0) |
| 4720 | { |
| 4721 | if(!((regs[t].dirty>>hr)&1)) |
| 4722 | { |
| 4723 | if((i_dirty>>hr)&1) |
| 4724 | { |
| 4725 | if(!((unneeded_reg[t]>>i_regmap[hr])&1)) |
| 4726 | { |
| 4727 | //printf("%x: dirty no match\n",addr); |
| 4728 | return 0; |
| 4729 | } |
| 4730 | } |
| 4731 | } |
| 4732 | } |
| 4733 | } |
| 4734 | } |
| 4735 | // Delay slots are not valid branch targets |
| 4736 | //if(t>0&&(dops[t-1].is_jump) return 0; |
| 4737 | // Delay slots require additional processing, so do not match |
| 4738 | if(dops[t].is_ds) return 0; |
| 4739 | } |
| 4740 | else |
| 4741 | { |
| 4742 | int hr; |
| 4743 | for(hr=0;hr<HOST_REGS;hr++) |
| 4744 | { |
| 4745 | if(hr!=EXCLUDE_REG) |
| 4746 | { |
| 4747 | if(i_regmap[hr]>=0) |
| 4748 | { |
| 4749 | if(hr!=HOST_CCREG||i_regmap[hr]!=CCREG) |
| 4750 | { |
| 4751 | if((i_dirty>>hr)&1) |
| 4752 | { |
| 4753 | return 0; |
| 4754 | } |
| 4755 | } |
| 4756 | } |
| 4757 | } |
| 4758 | } |
| 4759 | } |
| 4760 | return 1; |
| 4761 | } |
| 4762 | |
| 4763 | #ifdef DRC_DBG |
| 4764 | static void drc_dbg_emit_do_cmp(int i, int ccadj_) |
| 4765 | { |
| 4766 | extern void do_insn_cmp(); |
| 4767 | //extern int cycle; |
| 4768 | u_int hr, reglist = get_host_reglist(regs[i].regmap); |
| 4769 | |
| 4770 | assem_debug("//do_insn_cmp %08x\n", start+i*4); |
| 4771 | save_regs(reglist); |
| 4772 | // write out changed consts to match the interpreter |
| 4773 | if (i > 0 && !dops[i].bt) { |
| 4774 | for (hr = 0; hr < HOST_REGS; hr++) { |
| 4775 | int reg = regs[i].regmap_entry[hr]; // regs[i-1].regmap[hr]; |
| 4776 | if (hr == EXCLUDE_REG || reg < 0) |
| 4777 | continue; |
| 4778 | if (!((regs[i-1].isconst >> hr) & 1)) |
| 4779 | continue; |
| 4780 | if (i > 1 && reg == regs[i-2].regmap[hr] && constmap[i-1][hr] == constmap[i-2][hr]) |
| 4781 | continue; |
| 4782 | emit_movimm(constmap[i-1][hr],0); |
| 4783 | emit_storereg(reg, 0); |
| 4784 | } |
| 4785 | } |
| 4786 | emit_movimm(start+i*4,0); |
| 4787 | emit_writeword(0,&pcaddr); |
| 4788 | int cc = get_reg(regs[i].regmap_entry, CCREG); |
| 4789 | if (cc < 0) |
| 4790 | emit_loadreg(CCREG, cc = 0); |
| 4791 | emit_addimm(cc, ccadj_, 0); |
| 4792 | emit_writeword(0, &psxRegs.cycle); |
| 4793 | emit_far_call(do_insn_cmp); |
| 4794 | //emit_readword(&cycle,0); |
| 4795 | //emit_addimm(0,2,0); |
| 4796 | //emit_writeword(0,&cycle); |
| 4797 | (void)get_reg2; |
| 4798 | restore_regs(reglist); |
| 4799 | assem_debug("\\\\do_insn_cmp\n"); |
| 4800 | } |
| 4801 | #else |
| 4802 | #define drc_dbg_emit_do_cmp(x,y) |
| 4803 | #endif |
| 4804 | |
| 4805 | // Used when a branch jumps into the delay slot of another branch |
| 4806 | static void ds_assemble_entry(int i) |
| 4807 | { |
| 4808 | int t = (ba[i] - start) >> 2; |
| 4809 | int ccadj_ = -CLOCK_ADJUST(1); |
| 4810 | if (!instr_addr[t]) |
| 4811 | instr_addr[t] = out; |
| 4812 | assem_debug("Assemble delay slot at %x\n",ba[i]); |
| 4813 | assem_debug("<->\n"); |
| 4814 | drc_dbg_emit_do_cmp(t, ccadj_); |
| 4815 | if(regs[t].regmap_entry[HOST_CCREG]==CCREG&®s[t].regmap[HOST_CCREG]!=CCREG) |
| 4816 | wb_register(CCREG,regs[t].regmap_entry,regs[t].wasdirty); |
| 4817 | load_regs(regs[t].regmap_entry,regs[t].regmap,dops[t].rs1,dops[t].rs2); |
| 4818 | address_generation(t,®s[t],regs[t].regmap_entry); |
| 4819 | if (ram_offset && (dops[t].is_load || dops[t].is_store)) |
| 4820 | load_reg(regs[t].regmap_entry,regs[t].regmap,ROREG); |
| 4821 | if (dops[t].is_store) |
| 4822 | load_reg(regs[t].regmap_entry,regs[t].regmap,INVCP); |
| 4823 | is_delayslot=0; |
| 4824 | switch (dops[t].itype) { |
| 4825 | case SYSCALL: |
| 4826 | case HLECALL: |
| 4827 | case INTCALL: |
| 4828 | case SPAN: |
| 4829 | case UJUMP: |
| 4830 | case RJUMP: |
| 4831 | case CJUMP: |
| 4832 | case SJUMP: |
| 4833 | SysPrintf("Jump in the delay slot. This is probably a bug.\n"); |
| 4834 | break; |
| 4835 | default: |
| 4836 | assemble(t, ®s[t], ccadj_); |
| 4837 | } |
| 4838 | store_regs_bt(regs[t].regmap,regs[t].dirty,ba[i]+4); |
| 4839 | load_regs_bt(regs[t].regmap,regs[t].dirty,ba[i]+4); |
| 4840 | if(internal_branch(ba[i]+4)) |
| 4841 | assem_debug("branch: internal\n"); |
| 4842 | else |
| 4843 | assem_debug("branch: external\n"); |
| 4844 | assert(internal_branch(ba[i]+4)); |
| 4845 | add_to_linker(out,ba[i]+4,internal_branch(ba[i]+4)); |
| 4846 | emit_jmp(0); |
| 4847 | } |
| 4848 | |
| 4849 | static void emit_extjump(void *addr, u_int target) |
| 4850 | { |
| 4851 | emit_extjump2(addr, target, dyna_linker); |
| 4852 | } |
| 4853 | |
| 4854 | static void emit_extjump_ds(void *addr, u_int target) |
| 4855 | { |
| 4856 | emit_extjump2(addr, target, dyna_linker_ds); |
| 4857 | } |
| 4858 | |
| 4859 | // Load 2 immediates optimizing for small code size |
| 4860 | static void emit_mov2imm_compact(int imm1,u_int rt1,int imm2,u_int rt2) |
| 4861 | { |
| 4862 | emit_movimm(imm1,rt1); |
| 4863 | emit_movimm_from(imm1,rt1,imm2,rt2); |
| 4864 | } |
| 4865 | |
| 4866 | static void do_cc(int i, const signed char i_regmap[], int *adj, |
| 4867 | int addr, int taken, int invert) |
| 4868 | { |
| 4869 | int count, count_plus2; |
| 4870 | void *jaddr; |
| 4871 | void *idle=NULL; |
| 4872 | int t=0; |
| 4873 | if(dops[i].itype==RJUMP) |
| 4874 | { |
| 4875 | *adj=0; |
| 4876 | } |
| 4877 | //if(ba[i]>=start && ba[i]<(start+slen*4)) |
| 4878 | if(internal_branch(ba[i])) |
| 4879 | { |
| 4880 | t=(ba[i]-start)>>2; |
| 4881 | if(dops[t].is_ds) *adj=-CLOCK_ADJUST(1); // Branch into delay slot adds an extra cycle |
| 4882 | else *adj=ccadj[t]; |
| 4883 | } |
| 4884 | else |
| 4885 | { |
| 4886 | *adj=0; |
| 4887 | } |
| 4888 | count = ccadj[i]; |
| 4889 | count_plus2 = count + CLOCK_ADJUST(2); |
| 4890 | if(taken==TAKEN && i==(ba[i]-start)>>2 && source[i+1]==0) { |
| 4891 | // Idle loop |
| 4892 | if(count&1) emit_addimm_and_set_flags(2*(count+2),HOST_CCREG); |
| 4893 | idle=out; |
| 4894 | //emit_subfrommem(&idlecount,HOST_CCREG); // Count idle cycles |
| 4895 | emit_andimm(HOST_CCREG,3,HOST_CCREG); |
| 4896 | jaddr=out; |
| 4897 | emit_jmp(0); |
| 4898 | } |
| 4899 | else if(*adj==0||invert) { |
| 4900 | int cycles = count_plus2; |
| 4901 | // faster loop HACK |
| 4902 | #if 0 |
| 4903 | if (t&&*adj) { |
| 4904 | int rel=t-i; |
| 4905 | if(-NO_CYCLE_PENALTY_THR<rel&&rel<0) |
| 4906 | cycles=*adj+count+2-*adj; |
| 4907 | } |
| 4908 | #endif |
| 4909 | emit_addimm_and_set_flags(cycles, HOST_CCREG); |
| 4910 | jaddr = out; |
| 4911 | emit_jns(0); |
| 4912 | } |
| 4913 | else |
| 4914 | { |
| 4915 | emit_cmpimm(HOST_CCREG, -count_plus2); |
| 4916 | jaddr = out; |
| 4917 | emit_jns(0); |
| 4918 | } |
| 4919 | add_stub(CC_STUB,jaddr,idle?idle:out,(*adj==0||invert||idle)?0:count_plus2,i,addr,taken,0); |
| 4920 | } |
| 4921 | |
| 4922 | static void do_ccstub(int n) |
| 4923 | { |
| 4924 | literal_pool(256); |
| 4925 | assem_debug("do_ccstub %x\n",start+(u_int)stubs[n].b*4); |
| 4926 | set_jump_target(stubs[n].addr, out); |
| 4927 | int i=stubs[n].b; |
| 4928 | if(stubs[n].d==NULLDS) { |
| 4929 | // Delay slot instruction is nullified ("likely" branch) |
| 4930 | wb_dirtys(regs[i].regmap,regs[i].dirty); |
| 4931 | } |
| 4932 | else if(stubs[n].d!=TAKEN) { |
| 4933 | wb_dirtys(branch_regs[i].regmap,branch_regs[i].dirty); |
| 4934 | } |
| 4935 | else { |
| 4936 | if(internal_branch(ba[i])) |
| 4937 | wb_needed_dirtys(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 4938 | } |
| 4939 | if(stubs[n].c!=-1) |
| 4940 | { |
| 4941 | // Save PC as return address |
| 4942 | emit_movimm(stubs[n].c,EAX); |
| 4943 | emit_writeword(EAX,&pcaddr); |
| 4944 | } |
| 4945 | else |
| 4946 | { |
| 4947 | // Return address depends on which way the branch goes |
| 4948 | if(dops[i].itype==CJUMP||dops[i].itype==SJUMP) |
| 4949 | { |
| 4950 | int s1l=get_reg(branch_regs[i].regmap,dops[i].rs1); |
| 4951 | int s2l=get_reg(branch_regs[i].regmap,dops[i].rs2); |
| 4952 | if(dops[i].rs1==0) |
| 4953 | { |
| 4954 | s1l=s2l; |
| 4955 | s2l=-1; |
| 4956 | } |
| 4957 | else if(dops[i].rs2==0) |
| 4958 | { |
| 4959 | s2l=-1; |
| 4960 | } |
| 4961 | assert(s1l>=0); |
| 4962 | #ifdef DESTRUCTIVE_WRITEBACK |
| 4963 | if(dops[i].rs1) { |
| 4964 | if((branch_regs[i].dirty>>s1l)&&1) |
| 4965 | emit_loadreg(dops[i].rs1,s1l); |
| 4966 | } |
| 4967 | else { |
| 4968 | if((branch_regs[i].dirty>>s1l)&1) |
| 4969 | emit_loadreg(dops[i].rs2,s1l); |
| 4970 | } |
| 4971 | if(s2l>=0) |
| 4972 | if((branch_regs[i].dirty>>s2l)&1) |
| 4973 | emit_loadreg(dops[i].rs2,s2l); |
| 4974 | #endif |
| 4975 | int hr=0; |
| 4976 | int addr=-1,alt=-1,ntaddr=-1; |
| 4977 | while(hr<HOST_REGS) |
| 4978 | { |
| 4979 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && |
| 4980 | branch_regs[i].regmap[hr]!=dops[i].rs1 && |
| 4981 | branch_regs[i].regmap[hr]!=dops[i].rs2 ) |
| 4982 | { |
| 4983 | addr=hr++;break; |
| 4984 | } |
| 4985 | hr++; |
| 4986 | } |
| 4987 | while(hr<HOST_REGS) |
| 4988 | { |
| 4989 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && |
| 4990 | branch_regs[i].regmap[hr]!=dops[i].rs1 && |
| 4991 | branch_regs[i].regmap[hr]!=dops[i].rs2 ) |
| 4992 | { |
| 4993 | alt=hr++;break; |
| 4994 | } |
| 4995 | hr++; |
| 4996 | } |
| 4997 | if((dops[i].opcode&0x2E)==6) // BLEZ/BGTZ needs another register |
| 4998 | { |
| 4999 | while(hr<HOST_REGS) |
| 5000 | { |
| 5001 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && |
| 5002 | branch_regs[i].regmap[hr]!=dops[i].rs1 && |
| 5003 | branch_regs[i].regmap[hr]!=dops[i].rs2 ) |
| 5004 | { |
| 5005 | ntaddr=hr;break; |
| 5006 | } |
| 5007 | hr++; |
| 5008 | } |
| 5009 | assert(hr<HOST_REGS); |
| 5010 | } |
| 5011 | if((dops[i].opcode&0x2f)==4) // BEQ |
| 5012 | { |
| 5013 | #ifdef HAVE_CMOV_IMM |
| 5014 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5015 | else emit_test(s1l,s1l); |
| 5016 | emit_cmov2imm_e_ne_compact(ba[i],start+i*4+8,addr); |
| 5017 | #else |
| 5018 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt); |
| 5019 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5020 | else emit_test(s1l,s1l); |
| 5021 | emit_cmovne_reg(alt,addr); |
| 5022 | #endif |
| 5023 | } |
| 5024 | if((dops[i].opcode&0x2f)==5) // BNE |
| 5025 | { |
| 5026 | #ifdef HAVE_CMOV_IMM |
| 5027 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5028 | else emit_test(s1l,s1l); |
| 5029 | emit_cmov2imm_e_ne_compact(start+i*4+8,ba[i],addr); |
| 5030 | #else |
| 5031 | emit_mov2imm_compact(start+i*4+8,addr,ba[i],alt); |
| 5032 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5033 | else emit_test(s1l,s1l); |
| 5034 | emit_cmovne_reg(alt,addr); |
| 5035 | #endif |
| 5036 | } |
| 5037 | if((dops[i].opcode&0x2f)==6) // BLEZ |
| 5038 | { |
| 5039 | //emit_movimm(ba[i],alt); |
| 5040 | //emit_movimm(start+i*4+8,addr); |
| 5041 | emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr); |
| 5042 | emit_cmpimm(s1l,1); |
| 5043 | emit_cmovl_reg(alt,addr); |
| 5044 | } |
| 5045 | if((dops[i].opcode&0x2f)==7) // BGTZ |
| 5046 | { |
| 5047 | //emit_movimm(ba[i],addr); |
| 5048 | //emit_movimm(start+i*4+8,ntaddr); |
| 5049 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,ntaddr); |
| 5050 | emit_cmpimm(s1l,1); |
| 5051 | emit_cmovl_reg(ntaddr,addr); |
| 5052 | } |
| 5053 | if((dops[i].opcode==1)&&(dops[i].opcode2&0x2D)==0) // BLTZ |
| 5054 | { |
| 5055 | //emit_movimm(ba[i],alt); |
| 5056 | //emit_movimm(start+i*4+8,addr); |
| 5057 | emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr); |
| 5058 | emit_test(s1l,s1l); |
| 5059 | emit_cmovs_reg(alt,addr); |
| 5060 | } |
| 5061 | if((dops[i].opcode==1)&&(dops[i].opcode2&0x2D)==1) // BGEZ |
| 5062 | { |
| 5063 | //emit_movimm(ba[i],addr); |
| 5064 | //emit_movimm(start+i*4+8,alt); |
| 5065 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt); |
| 5066 | emit_test(s1l,s1l); |
| 5067 | emit_cmovs_reg(alt,addr); |
| 5068 | } |
| 5069 | if(dops[i].opcode==0x11 && dops[i].opcode2==0x08 ) { |
| 5070 | if(source[i]&0x10000) // BC1T |
| 5071 | { |
| 5072 | //emit_movimm(ba[i],alt); |
| 5073 | //emit_movimm(start+i*4+8,addr); |
| 5074 | emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr); |
| 5075 | emit_testimm(s1l,0x800000); |
| 5076 | emit_cmovne_reg(alt,addr); |
| 5077 | } |
| 5078 | else // BC1F |
| 5079 | { |
| 5080 | //emit_movimm(ba[i],addr); |
| 5081 | //emit_movimm(start+i*4+8,alt); |
| 5082 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt); |
| 5083 | emit_testimm(s1l,0x800000); |
| 5084 | emit_cmovne_reg(alt,addr); |
| 5085 | } |
| 5086 | } |
| 5087 | emit_writeword(addr,&pcaddr); |
| 5088 | } |
| 5089 | else |
| 5090 | if(dops[i].itype==RJUMP) |
| 5091 | { |
| 5092 | int r=get_reg(branch_regs[i].regmap,dops[i].rs1); |
| 5093 | if (ds_writes_rjump_rs(i)) { |
| 5094 | r=get_reg(branch_regs[i].regmap,RTEMP); |
| 5095 | } |
| 5096 | emit_writeword(r,&pcaddr); |
| 5097 | } |
| 5098 | else {SysPrintf("Unknown branch type in do_ccstub\n");abort();} |
| 5099 | } |
| 5100 | // Update cycle count |
| 5101 | assert(branch_regs[i].regmap[HOST_CCREG]==CCREG||branch_regs[i].regmap[HOST_CCREG]==-1); |
| 5102 | if(stubs[n].a) emit_addimm(HOST_CCREG,(int)stubs[n].a,HOST_CCREG); |
| 5103 | emit_far_call(cc_interrupt); |
| 5104 | if(stubs[n].a) emit_addimm(HOST_CCREG,-(int)stubs[n].a,HOST_CCREG); |
| 5105 | if(stubs[n].d==TAKEN) { |
| 5106 | if(internal_branch(ba[i])) |
| 5107 | load_needed_regs(branch_regs[i].regmap,regs[(ba[i]-start)>>2].regmap_entry); |
| 5108 | else if(dops[i].itype==RJUMP) { |
| 5109 | if(get_reg(branch_regs[i].regmap,RTEMP)>=0) |
| 5110 | emit_readword(&pcaddr,get_reg(branch_regs[i].regmap,RTEMP)); |
| 5111 | else |
| 5112 | emit_loadreg(dops[i].rs1,get_reg(branch_regs[i].regmap,dops[i].rs1)); |
| 5113 | } |
| 5114 | }else if(stubs[n].d==NOTTAKEN) { |
| 5115 | if(i<slen-2) load_needed_regs(branch_regs[i].regmap,regmap_pre[i+2]); |
| 5116 | else load_all_regs(branch_regs[i].regmap); |
| 5117 | }else if(stubs[n].d==NULLDS) { |
| 5118 | // Delay slot instruction is nullified ("likely" branch) |
| 5119 | if(i<slen-2) load_needed_regs(regs[i].regmap,regmap_pre[i+2]); |
| 5120 | else load_all_regs(regs[i].regmap); |
| 5121 | }else{ |
| 5122 | load_all_regs(branch_regs[i].regmap); |
| 5123 | } |
| 5124 | if (stubs[n].retaddr) |
| 5125 | emit_jmp(stubs[n].retaddr); |
| 5126 | else |
| 5127 | do_jump_vaddr(stubs[n].e); |
| 5128 | } |
| 5129 | |
| 5130 | static void add_to_linker(void *addr, u_int target, int ext) |
| 5131 | { |
| 5132 | assert(linkcount < ARRAY_SIZE(link_addr)); |
| 5133 | link_addr[linkcount].addr = addr; |
| 5134 | link_addr[linkcount].target = target; |
| 5135 | link_addr[linkcount].ext = ext; |
| 5136 | linkcount++; |
| 5137 | } |
| 5138 | |
| 5139 | static void ujump_assemble_write_ra(int i) |
| 5140 | { |
| 5141 | int rt; |
| 5142 | unsigned int return_address; |
| 5143 | rt=get_reg(branch_regs[i].regmap,31); |
| 5144 | assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5145 | //assert(rt>=0); |
| 5146 | return_address=start+i*4+8; |
| 5147 | if(rt>=0) { |
| 5148 | #ifdef USE_MINI_HT |
| 5149 | if(internal_branch(return_address)&&dops[i+1].rt1!=31) { |
| 5150 | int temp=-1; // note: must be ds-safe |
| 5151 | #ifdef HOST_TEMPREG |
| 5152 | temp=HOST_TEMPREG; |
| 5153 | #endif |
| 5154 | if(temp>=0) do_miniht_insert(return_address,rt,temp); |
| 5155 | else emit_movimm(return_address,rt); |
| 5156 | } |
| 5157 | else |
| 5158 | #endif |
| 5159 | { |
| 5160 | #ifdef REG_PREFETCH |
| 5161 | if(temp>=0) |
| 5162 | { |
| 5163 | if(i_regmap[temp]!=PTEMP) emit_movimm((uintptr_t)hash_table_get(return_address),temp); |
| 5164 | } |
| 5165 | #endif |
| 5166 | emit_movimm(return_address,rt); // PC into link register |
| 5167 | #ifdef IMM_PREFETCH |
| 5168 | emit_prefetch(hash_table_get(return_address)); |
| 5169 | #endif |
| 5170 | } |
| 5171 | } |
| 5172 | } |
| 5173 | |
| 5174 | static void ujump_assemble(int i, const struct regstat *i_regs) |
| 5175 | { |
| 5176 | int ra_done=0; |
| 5177 | if(i==(ba[i]-start)>>2) assem_debug("idle loop\n"); |
| 5178 | address_generation(i+1,i_regs,regs[i].regmap_entry); |
| 5179 | #ifdef REG_PREFETCH |
| 5180 | int temp=get_reg(branch_regs[i].regmap,PTEMP); |
| 5181 | if(dops[i].rt1==31&&temp>=0) |
| 5182 | { |
| 5183 | signed char *i_regmap=i_regs->regmap; |
| 5184 | int return_address=start+i*4+8; |
| 5185 | if(get_reg(branch_regs[i].regmap,31)>0) |
| 5186 | if(i_regmap[temp]==PTEMP) emit_movimm((uintptr_t)hash_table_get(return_address),temp); |
| 5187 | } |
| 5188 | #endif |
| 5189 | if(dops[i].rt1==31&&(dops[i].rt1==dops[i+1].rs1||dops[i].rt1==dops[i+1].rs2)) { |
| 5190 | ujump_assemble_write_ra(i); // writeback ra for DS |
| 5191 | ra_done=1; |
| 5192 | } |
| 5193 | ds_assemble(i+1,i_regs); |
| 5194 | uint64_t bc_unneeded=branch_regs[i].u; |
| 5195 | bc_unneeded|=1|(1LL<<dops[i].rt1); |
| 5196 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,bc_unneeded); |
| 5197 | load_reg(regs[i].regmap,branch_regs[i].regmap,CCREG); |
| 5198 | if(!ra_done&&dops[i].rt1==31) |
| 5199 | ujump_assemble_write_ra(i); |
| 5200 | int cc,adj; |
| 5201 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5202 | assert(cc==HOST_CCREG); |
| 5203 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5204 | #ifdef REG_PREFETCH |
| 5205 | if(dops[i].rt1==31&&temp>=0) emit_prefetchreg(temp); |
| 5206 | #endif |
| 5207 | do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0); |
| 5208 | if(adj) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5209 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5210 | if(internal_branch(ba[i])) |
| 5211 | assem_debug("branch: internal\n"); |
| 5212 | else |
| 5213 | assem_debug("branch: external\n"); |
| 5214 | if (internal_branch(ba[i]) && dops[(ba[i]-start)>>2].is_ds) { |
| 5215 | ds_assemble_entry(i); |
| 5216 | } |
| 5217 | else { |
| 5218 | add_to_linker(out,ba[i],internal_branch(ba[i])); |
| 5219 | emit_jmp(0); |
| 5220 | } |
| 5221 | } |
| 5222 | |
| 5223 | static void rjump_assemble_write_ra(int i) |
| 5224 | { |
| 5225 | int rt,return_address; |
| 5226 | assert(dops[i+1].rt1!=dops[i].rt1); |
| 5227 | assert(dops[i+1].rt2!=dops[i].rt1); |
| 5228 | rt=get_reg(branch_regs[i].regmap,dops[i].rt1); |
| 5229 | assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5230 | assert(rt>=0); |
| 5231 | return_address=start+i*4+8; |
| 5232 | #ifdef REG_PREFETCH |
| 5233 | if(temp>=0) |
| 5234 | { |
| 5235 | if(i_regmap[temp]!=PTEMP) emit_movimm((uintptr_t)hash_table_get(return_address),temp); |
| 5236 | } |
| 5237 | #endif |
| 5238 | emit_movimm(return_address,rt); // PC into link register |
| 5239 | #ifdef IMM_PREFETCH |
| 5240 | emit_prefetch(hash_table_get(return_address)); |
| 5241 | #endif |
| 5242 | } |
| 5243 | |
| 5244 | static void rjump_assemble(int i, const struct regstat *i_regs) |
| 5245 | { |
| 5246 | int temp; |
| 5247 | int rs,cc; |
| 5248 | int ra_done=0; |
| 5249 | rs=get_reg(branch_regs[i].regmap,dops[i].rs1); |
| 5250 | assert(rs>=0); |
| 5251 | if (ds_writes_rjump_rs(i)) { |
| 5252 | // Delay slot abuse, make a copy of the branch address register |
| 5253 | temp=get_reg(branch_regs[i].regmap,RTEMP); |
| 5254 | assert(temp>=0); |
| 5255 | assert(regs[i].regmap[temp]==RTEMP); |
| 5256 | emit_mov(rs,temp); |
| 5257 | rs=temp; |
| 5258 | } |
| 5259 | address_generation(i+1,i_regs,regs[i].regmap_entry); |
| 5260 | #ifdef REG_PREFETCH |
| 5261 | if(dops[i].rt1==31) |
| 5262 | { |
| 5263 | if((temp=get_reg(branch_regs[i].regmap,PTEMP))>=0) { |
| 5264 | signed char *i_regmap=i_regs->regmap; |
| 5265 | int return_address=start+i*4+8; |
| 5266 | if(i_regmap[temp]==PTEMP) emit_movimm((uintptr_t)hash_table_get(return_address),temp); |
| 5267 | } |
| 5268 | } |
| 5269 | #endif |
| 5270 | #ifdef USE_MINI_HT |
| 5271 | if(dops[i].rs1==31) { |
| 5272 | int rh=get_reg(regs[i].regmap,RHASH); |
| 5273 | if(rh>=0) do_preload_rhash(rh); |
| 5274 | } |
| 5275 | #endif |
| 5276 | if(dops[i].rt1!=0&&(dops[i].rt1==dops[i+1].rs1||dops[i].rt1==dops[i+1].rs2)) { |
| 5277 | rjump_assemble_write_ra(i); |
| 5278 | ra_done=1; |
| 5279 | } |
| 5280 | ds_assemble(i+1,i_regs); |
| 5281 | uint64_t bc_unneeded=branch_regs[i].u; |
| 5282 | bc_unneeded|=1|(1LL<<dops[i].rt1); |
| 5283 | bc_unneeded&=~(1LL<<dops[i].rs1); |
| 5284 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,bc_unneeded); |
| 5285 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i].rs1,CCREG); |
| 5286 | if(!ra_done&&dops[i].rt1!=0) |
| 5287 | rjump_assemble_write_ra(i); |
| 5288 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5289 | assert(cc==HOST_CCREG); |
| 5290 | (void)cc; |
| 5291 | #ifdef USE_MINI_HT |
| 5292 | int rh=get_reg(branch_regs[i].regmap,RHASH); |
| 5293 | int ht=get_reg(branch_regs[i].regmap,RHTBL); |
| 5294 | if(dops[i].rs1==31) { |
| 5295 | if(regs[i].regmap[rh]!=RHASH) do_preload_rhash(rh); |
| 5296 | do_preload_rhtbl(ht); |
| 5297 | do_rhash(rs,rh); |
| 5298 | } |
| 5299 | #endif |
| 5300 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,-1); |
| 5301 | #ifdef DESTRUCTIVE_WRITEBACK |
| 5302 | if((branch_regs[i].dirty>>rs)&1) { |
| 5303 | if(dops[i].rs1!=dops[i+1].rt1&&dops[i].rs1!=dops[i+1].rt2) { |
| 5304 | emit_loadreg(dops[i].rs1,rs); |
| 5305 | } |
| 5306 | } |
| 5307 | #endif |
| 5308 | #ifdef REG_PREFETCH |
| 5309 | if(dops[i].rt1==31&&temp>=0) emit_prefetchreg(temp); |
| 5310 | #endif |
| 5311 | #ifdef USE_MINI_HT |
| 5312 | if(dops[i].rs1==31) { |
| 5313 | do_miniht_load(ht,rh); |
| 5314 | } |
| 5315 | #endif |
| 5316 | //do_cc(i,branch_regs[i].regmap,&adj,-1,TAKEN); |
| 5317 | //if(adj) emit_addimm(cc,2*(ccadj[i]+2-adj),cc); // ??? - Shouldn't happen |
| 5318 | //assert(adj==0); |
| 5319 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), HOST_CCREG); |
| 5320 | add_stub(CC_STUB,out,NULL,0,i,-1,TAKEN,rs); |
| 5321 | if(dops[i+1].itype==COP0&&(source[i+1]&0x3f)==0x10) |
| 5322 | // special case for RFE |
| 5323 | emit_jmp(0); |
| 5324 | else |
| 5325 | emit_jns(0); |
| 5326 | //load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,-1); |
| 5327 | #ifdef USE_MINI_HT |
| 5328 | if(dops[i].rs1==31) { |
| 5329 | do_miniht_jump(rs,rh,ht); |
| 5330 | } |
| 5331 | else |
| 5332 | #endif |
| 5333 | { |
| 5334 | do_jump_vaddr(rs); |
| 5335 | } |
| 5336 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5337 | if(dops[i].rt1!=31&&i<slen-2&&(((u_int)out)&7)) emit_mov(13,13); |
| 5338 | #endif |
| 5339 | } |
| 5340 | |
| 5341 | static void cjump_assemble(int i, const struct regstat *i_regs) |
| 5342 | { |
| 5343 | const signed char *i_regmap = i_regs->regmap; |
| 5344 | int cc; |
| 5345 | int match; |
| 5346 | match=match_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5347 | assem_debug("match=%d\n",match); |
| 5348 | int s1l,s2l; |
| 5349 | int unconditional=0,nop=0; |
| 5350 | int invert=0; |
| 5351 | int internal=internal_branch(ba[i]); |
| 5352 | if(i==(ba[i]-start)>>2) assem_debug("idle loop\n"); |
| 5353 | if(!match) invert=1; |
| 5354 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5355 | if(i>(ba[i]-start)>>2) invert=1; |
| 5356 | #endif |
| 5357 | #ifdef __aarch64__ |
| 5358 | invert=1; // because of near cond. branches |
| 5359 | #endif |
| 5360 | |
| 5361 | if(dops[i].ooo) { |
| 5362 | s1l=get_reg(branch_regs[i].regmap,dops[i].rs1); |
| 5363 | s2l=get_reg(branch_regs[i].regmap,dops[i].rs2); |
| 5364 | } |
| 5365 | else { |
| 5366 | s1l=get_reg(i_regmap,dops[i].rs1); |
| 5367 | s2l=get_reg(i_regmap,dops[i].rs2); |
| 5368 | } |
| 5369 | if(dops[i].rs1==0&&dops[i].rs2==0) |
| 5370 | { |
| 5371 | if(dops[i].opcode&1) nop=1; |
| 5372 | else unconditional=1; |
| 5373 | //assert(dops[i].opcode!=5); |
| 5374 | //assert(dops[i].opcode!=7); |
| 5375 | //assert(dops[i].opcode!=0x15); |
| 5376 | //assert(dops[i].opcode!=0x17); |
| 5377 | } |
| 5378 | else if(dops[i].rs1==0) |
| 5379 | { |
| 5380 | s1l=s2l; |
| 5381 | s2l=-1; |
| 5382 | } |
| 5383 | else if(dops[i].rs2==0) |
| 5384 | { |
| 5385 | s2l=-1; |
| 5386 | } |
| 5387 | |
| 5388 | if(dops[i].ooo) { |
| 5389 | // Out of order execution (delay slot first) |
| 5390 | //printf("OOOE\n"); |
| 5391 | address_generation(i+1,i_regs,regs[i].regmap_entry); |
| 5392 | ds_assemble(i+1,i_regs); |
| 5393 | int adj; |
| 5394 | uint64_t bc_unneeded=branch_regs[i].u; |
| 5395 | bc_unneeded&=~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 5396 | bc_unneeded|=1; |
| 5397 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,bc_unneeded); |
| 5398 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i].rs1,dops[i].rs2); |
| 5399 | load_reg(regs[i].regmap,branch_regs[i].regmap,CCREG); |
| 5400 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5401 | assert(cc==HOST_CCREG); |
| 5402 | if(unconditional) |
| 5403 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5404 | //do_cc(i,branch_regs[i].regmap,&adj,unconditional?ba[i]:-1,unconditional); |
| 5405 | //assem_debug("cycle count (adj)\n"); |
| 5406 | if(unconditional) { |
| 5407 | do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0); |
| 5408 | if(i!=(ba[i]-start)>>2 || source[i+1]!=0) { |
| 5409 | if(adj) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5410 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5411 | if(internal) |
| 5412 | assem_debug("branch: internal\n"); |
| 5413 | else |
| 5414 | assem_debug("branch: external\n"); |
| 5415 | if (internal && dops[(ba[i]-start)>>2].is_ds) { |
| 5416 | ds_assemble_entry(i); |
| 5417 | } |
| 5418 | else { |
| 5419 | add_to_linker(out,ba[i],internal); |
| 5420 | emit_jmp(0); |
| 5421 | } |
| 5422 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5423 | if(((u_int)out)&7) emit_addnop(0); |
| 5424 | #endif |
| 5425 | } |
| 5426 | } |
| 5427 | else if(nop) { |
| 5428 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), cc); |
| 5429 | void *jaddr=out; |
| 5430 | emit_jns(0); |
| 5431 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5432 | } |
| 5433 | else { |
| 5434 | void *taken = NULL, *nottaken = NULL, *nottaken1 = NULL; |
| 5435 | do_cc(i,branch_regs[i].regmap,&adj,-1,0,invert); |
| 5436 | if(adj&&!invert) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5437 | |
| 5438 | //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5439 | assert(s1l>=0); |
| 5440 | if(dops[i].opcode==4) // BEQ |
| 5441 | { |
| 5442 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5443 | else emit_test(s1l,s1l); |
| 5444 | if(invert){ |
| 5445 | nottaken=out; |
| 5446 | emit_jne(DJT_1); |
| 5447 | }else{ |
| 5448 | add_to_linker(out,ba[i],internal); |
| 5449 | emit_jeq(0); |
| 5450 | } |
| 5451 | } |
| 5452 | if(dops[i].opcode==5) // BNE |
| 5453 | { |
| 5454 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5455 | else emit_test(s1l,s1l); |
| 5456 | if(invert){ |
| 5457 | nottaken=out; |
| 5458 | emit_jeq(DJT_1); |
| 5459 | }else{ |
| 5460 | add_to_linker(out,ba[i],internal); |
| 5461 | emit_jne(0); |
| 5462 | } |
| 5463 | } |
| 5464 | if(dops[i].opcode==6) // BLEZ |
| 5465 | { |
| 5466 | emit_cmpimm(s1l,1); |
| 5467 | if(invert){ |
| 5468 | nottaken=out; |
| 5469 | emit_jge(DJT_1); |
| 5470 | }else{ |
| 5471 | add_to_linker(out,ba[i],internal); |
| 5472 | emit_jl(0); |
| 5473 | } |
| 5474 | } |
| 5475 | if(dops[i].opcode==7) // BGTZ |
| 5476 | { |
| 5477 | emit_cmpimm(s1l,1); |
| 5478 | if(invert){ |
| 5479 | nottaken=out; |
| 5480 | emit_jl(DJT_1); |
| 5481 | }else{ |
| 5482 | add_to_linker(out,ba[i],internal); |
| 5483 | emit_jge(0); |
| 5484 | } |
| 5485 | } |
| 5486 | if(invert) { |
| 5487 | if(taken) set_jump_target(taken, out); |
| 5488 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5489 | if (match && (!internal || !dops[(ba[i]-start)>>2].is_ds)) { |
| 5490 | if(adj) { |
| 5491 | emit_addimm(cc,-adj,cc); |
| 5492 | add_to_linker(out,ba[i],internal); |
| 5493 | }else{ |
| 5494 | emit_addnop(13); |
| 5495 | add_to_linker(out,ba[i],internal*2); |
| 5496 | } |
| 5497 | emit_jmp(0); |
| 5498 | }else |
| 5499 | #endif |
| 5500 | { |
| 5501 | if(adj) emit_addimm(cc,-adj,cc); |
| 5502 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5503 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5504 | if(internal) |
| 5505 | assem_debug("branch: internal\n"); |
| 5506 | else |
| 5507 | assem_debug("branch: external\n"); |
| 5508 | if (internal && dops[(ba[i] - start) >> 2].is_ds) { |
| 5509 | ds_assemble_entry(i); |
| 5510 | } |
| 5511 | else { |
| 5512 | add_to_linker(out,ba[i],internal); |
| 5513 | emit_jmp(0); |
| 5514 | } |
| 5515 | } |
| 5516 | set_jump_target(nottaken, out); |
| 5517 | } |
| 5518 | |
| 5519 | if(nottaken1) set_jump_target(nottaken1, out); |
| 5520 | if(adj) { |
| 5521 | if(!invert) emit_addimm(cc,adj,cc); |
| 5522 | } |
| 5523 | } // (!unconditional) |
| 5524 | } // if(ooo) |
| 5525 | else |
| 5526 | { |
| 5527 | // In-order execution (branch first) |
| 5528 | void *taken = NULL, *nottaken = NULL, *nottaken1 = NULL; |
| 5529 | if(!unconditional&&!nop) { |
| 5530 | //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5531 | assert(s1l>=0); |
| 5532 | if((dops[i].opcode&0x2f)==4) // BEQ |
| 5533 | { |
| 5534 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5535 | else emit_test(s1l,s1l); |
| 5536 | nottaken=out; |
| 5537 | emit_jne(DJT_2); |
| 5538 | } |
| 5539 | if((dops[i].opcode&0x2f)==5) // BNE |
| 5540 | { |
| 5541 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5542 | else emit_test(s1l,s1l); |
| 5543 | nottaken=out; |
| 5544 | emit_jeq(DJT_2); |
| 5545 | } |
| 5546 | if((dops[i].opcode&0x2f)==6) // BLEZ |
| 5547 | { |
| 5548 | emit_cmpimm(s1l,1); |
| 5549 | nottaken=out; |
| 5550 | emit_jge(DJT_2); |
| 5551 | } |
| 5552 | if((dops[i].opcode&0x2f)==7) // BGTZ |
| 5553 | { |
| 5554 | emit_cmpimm(s1l,1); |
| 5555 | nottaken=out; |
| 5556 | emit_jl(DJT_2); |
| 5557 | } |
| 5558 | } // if(!unconditional) |
| 5559 | int adj; |
| 5560 | uint64_t ds_unneeded=branch_regs[i].u; |
| 5561 | ds_unneeded&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 5562 | ds_unneeded|=1; |
| 5563 | // branch taken |
| 5564 | if(!nop) { |
| 5565 | if(taken) set_jump_target(taken, out); |
| 5566 | assem_debug("1:\n"); |
| 5567 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,ds_unneeded); |
| 5568 | // load regs |
| 5569 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i+1].rs1,dops[i+1].rs2); |
| 5570 | address_generation(i+1,&branch_regs[i],0); |
| 5571 | if (ram_offset) |
| 5572 | load_reg(regs[i].regmap,branch_regs[i].regmap,ROREG); |
| 5573 | load_regs(regs[i].regmap,branch_regs[i].regmap,CCREG,INVCP); |
| 5574 | ds_assemble(i+1,&branch_regs[i]); |
| 5575 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5576 | if(cc==-1) { |
| 5577 | emit_loadreg(CCREG,cc=HOST_CCREG); |
| 5578 | // CHECK: Is the following instruction (fall thru) allocated ok? |
| 5579 | } |
| 5580 | assert(cc==HOST_CCREG); |
| 5581 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5582 | do_cc(i,i_regmap,&adj,ba[i],TAKEN,0); |
| 5583 | assem_debug("cycle count (adj)\n"); |
| 5584 | if(adj) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5585 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5586 | if(internal) |
| 5587 | assem_debug("branch: internal\n"); |
| 5588 | else |
| 5589 | assem_debug("branch: external\n"); |
| 5590 | if (internal && dops[(ba[i] - start) >> 2].is_ds) { |
| 5591 | ds_assemble_entry(i); |
| 5592 | } |
| 5593 | else { |
| 5594 | add_to_linker(out,ba[i],internal); |
| 5595 | emit_jmp(0); |
| 5596 | } |
| 5597 | } |
| 5598 | // branch not taken |
| 5599 | if(!unconditional) { |
| 5600 | if(nottaken1) set_jump_target(nottaken1, out); |
| 5601 | set_jump_target(nottaken, out); |
| 5602 | assem_debug("2:\n"); |
| 5603 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,ds_unneeded); |
| 5604 | // load regs |
| 5605 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i+1].rs1,dops[i+1].rs2); |
| 5606 | address_generation(i+1,&branch_regs[i],0); |
| 5607 | if (ram_offset) |
| 5608 | load_reg(regs[i].regmap,branch_regs[i].regmap,ROREG); |
| 5609 | load_regs(regs[i].regmap,branch_regs[i].regmap,CCREG,INVCP); |
| 5610 | ds_assemble(i+1,&branch_regs[i]); |
| 5611 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5612 | if (cc == -1) { |
| 5613 | // Cycle count isn't in a register, temporarily load it then write it out |
| 5614 | emit_loadreg(CCREG,HOST_CCREG); |
| 5615 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), HOST_CCREG); |
| 5616 | void *jaddr=out; |
| 5617 | emit_jns(0); |
| 5618 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5619 | emit_storereg(CCREG,HOST_CCREG); |
| 5620 | } |
| 5621 | else{ |
| 5622 | cc=get_reg(i_regmap,CCREG); |
| 5623 | assert(cc==HOST_CCREG); |
| 5624 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), cc); |
| 5625 | void *jaddr=out; |
| 5626 | emit_jns(0); |
| 5627 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5628 | } |
| 5629 | } |
| 5630 | } |
| 5631 | } |
| 5632 | |
| 5633 | static void sjump_assemble(int i, const struct regstat *i_regs) |
| 5634 | { |
| 5635 | const signed char *i_regmap = i_regs->regmap; |
| 5636 | int cc; |
| 5637 | int match; |
| 5638 | match=match_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5639 | assem_debug("smatch=%d ooo=%d\n", match, dops[i].ooo); |
| 5640 | int s1l; |
| 5641 | int unconditional=0,nevertaken=0; |
| 5642 | int invert=0; |
| 5643 | int internal=internal_branch(ba[i]); |
| 5644 | if(i==(ba[i]-start)>>2) assem_debug("idle loop\n"); |
| 5645 | if(!match) invert=1; |
| 5646 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5647 | if(i>(ba[i]-start)>>2) invert=1; |
| 5648 | #endif |
| 5649 | #ifdef __aarch64__ |
| 5650 | invert=1; // because of near cond. branches |
| 5651 | #endif |
| 5652 | |
| 5653 | //if(dops[i].opcode2>=0x10) return; // FIXME (BxxZAL) |
| 5654 | //assert(dops[i].opcode2<0x10||dops[i].rs1==0); // FIXME (BxxZAL) |
| 5655 | |
| 5656 | if(dops[i].ooo) { |
| 5657 | s1l=get_reg(branch_regs[i].regmap,dops[i].rs1); |
| 5658 | } |
| 5659 | else { |
| 5660 | s1l=get_reg(i_regmap,dops[i].rs1); |
| 5661 | } |
| 5662 | if(dops[i].rs1==0) |
| 5663 | { |
| 5664 | if(dops[i].opcode2&1) unconditional=1; |
| 5665 | else nevertaken=1; |
| 5666 | // These are never taken (r0 is never less than zero) |
| 5667 | //assert(dops[i].opcode2!=0); |
| 5668 | //assert(dops[i].opcode2!=2); |
| 5669 | //assert(dops[i].opcode2!=0x10); |
| 5670 | //assert(dops[i].opcode2!=0x12); |
| 5671 | } |
| 5672 | |
| 5673 | if(dops[i].ooo) { |
| 5674 | // Out of order execution (delay slot first) |
| 5675 | //printf("OOOE\n"); |
| 5676 | address_generation(i+1,i_regs,regs[i].regmap_entry); |
| 5677 | ds_assemble(i+1,i_regs); |
| 5678 | int adj; |
| 5679 | uint64_t bc_unneeded=branch_regs[i].u; |
| 5680 | bc_unneeded&=~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 5681 | bc_unneeded|=1; |
| 5682 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,bc_unneeded); |
| 5683 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i].rs1,dops[i].rs1); |
| 5684 | load_reg(regs[i].regmap,branch_regs[i].regmap,CCREG); |
| 5685 | if(dops[i].rt1==31) { |
| 5686 | int rt,return_address; |
| 5687 | rt=get_reg(branch_regs[i].regmap,31); |
| 5688 | assem_debug("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5689 | if(rt>=0) { |
| 5690 | // Save the PC even if the branch is not taken |
| 5691 | return_address=start+i*4+8; |
| 5692 | emit_movimm(return_address,rt); // PC into link register |
| 5693 | #ifdef IMM_PREFETCH |
| 5694 | if(!nevertaken) emit_prefetch(hash_table_get(return_address)); |
| 5695 | #endif |
| 5696 | } |
| 5697 | } |
| 5698 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5699 | assert(cc==HOST_CCREG); |
| 5700 | if(unconditional) |
| 5701 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5702 | //do_cc(i,branch_regs[i].regmap,&adj,unconditional?ba[i]:-1,unconditional); |
| 5703 | assem_debug("cycle count (adj)\n"); |
| 5704 | if(unconditional) { |
| 5705 | do_cc(i,branch_regs[i].regmap,&adj,ba[i],TAKEN,0); |
| 5706 | if(i!=(ba[i]-start)>>2 || source[i+1]!=0) { |
| 5707 | if(adj) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5708 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5709 | if(internal) |
| 5710 | assem_debug("branch: internal\n"); |
| 5711 | else |
| 5712 | assem_debug("branch: external\n"); |
| 5713 | if (internal && dops[(ba[i] - start) >> 2].is_ds) { |
| 5714 | ds_assemble_entry(i); |
| 5715 | } |
| 5716 | else { |
| 5717 | add_to_linker(out,ba[i],internal); |
| 5718 | emit_jmp(0); |
| 5719 | } |
| 5720 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5721 | if(((u_int)out)&7) emit_addnop(0); |
| 5722 | #endif |
| 5723 | } |
| 5724 | } |
| 5725 | else if(nevertaken) { |
| 5726 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), cc); |
| 5727 | void *jaddr=out; |
| 5728 | emit_jns(0); |
| 5729 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5730 | } |
| 5731 | else { |
| 5732 | void *nottaken = NULL; |
| 5733 | do_cc(i,branch_regs[i].regmap,&adj,-1,0,invert); |
| 5734 | if(adj&&!invert) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5735 | { |
| 5736 | assert(s1l>=0); |
| 5737 | if((dops[i].opcode2&0xf)==0) // BLTZ/BLTZAL |
| 5738 | { |
| 5739 | emit_test(s1l,s1l); |
| 5740 | if(invert){ |
| 5741 | nottaken=out; |
| 5742 | emit_jns(DJT_1); |
| 5743 | }else{ |
| 5744 | add_to_linker(out,ba[i],internal); |
| 5745 | emit_js(0); |
| 5746 | } |
| 5747 | } |
| 5748 | if((dops[i].opcode2&0xf)==1) // BGEZ/BLTZAL |
| 5749 | { |
| 5750 | emit_test(s1l,s1l); |
| 5751 | if(invert){ |
| 5752 | nottaken=out; |
| 5753 | emit_js(DJT_1); |
| 5754 | }else{ |
| 5755 | add_to_linker(out,ba[i],internal); |
| 5756 | emit_jns(0); |
| 5757 | } |
| 5758 | } |
| 5759 | } |
| 5760 | |
| 5761 | if(invert) { |
| 5762 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 5763 | if (match && (!internal || !dops[(ba[i] - start) >> 2].is_ds)) { |
| 5764 | if(adj) { |
| 5765 | emit_addimm(cc,-adj,cc); |
| 5766 | add_to_linker(out,ba[i],internal); |
| 5767 | }else{ |
| 5768 | emit_addnop(13); |
| 5769 | add_to_linker(out,ba[i],internal*2); |
| 5770 | } |
| 5771 | emit_jmp(0); |
| 5772 | }else |
| 5773 | #endif |
| 5774 | { |
| 5775 | if(adj) emit_addimm(cc,-adj,cc); |
| 5776 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5777 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5778 | if(internal) |
| 5779 | assem_debug("branch: internal\n"); |
| 5780 | else |
| 5781 | assem_debug("branch: external\n"); |
| 5782 | if (internal && dops[(ba[i] - start) >> 2].is_ds) { |
| 5783 | ds_assemble_entry(i); |
| 5784 | } |
| 5785 | else { |
| 5786 | add_to_linker(out,ba[i],internal); |
| 5787 | emit_jmp(0); |
| 5788 | } |
| 5789 | } |
| 5790 | set_jump_target(nottaken, out); |
| 5791 | } |
| 5792 | |
| 5793 | if(adj) { |
| 5794 | if(!invert) emit_addimm(cc,adj,cc); |
| 5795 | } |
| 5796 | } // (!unconditional) |
| 5797 | } // if(ooo) |
| 5798 | else |
| 5799 | { |
| 5800 | // In-order execution (branch first) |
| 5801 | //printf("IOE\n"); |
| 5802 | void *nottaken = NULL; |
| 5803 | if(dops[i].rt1==31) { |
| 5804 | int rt,return_address; |
| 5805 | rt=get_reg(branch_regs[i].regmap,31); |
| 5806 | if(rt>=0) { |
| 5807 | // Save the PC even if the branch is not taken |
| 5808 | return_address=start+i*4+8; |
| 5809 | emit_movimm(return_address,rt); // PC into link register |
| 5810 | #ifdef IMM_PREFETCH |
| 5811 | emit_prefetch(hash_table_get(return_address)); |
| 5812 | #endif |
| 5813 | } |
| 5814 | } |
| 5815 | if(!unconditional) { |
| 5816 | //printf("branch(%d): eax=%d ecx=%d edx=%d ebx=%d ebp=%d esi=%d edi=%d\n",i,branch_regs[i].regmap[0],branch_regs[i].regmap[1],branch_regs[i].regmap[2],branch_regs[i].regmap[3],branch_regs[i].regmap[5],branch_regs[i].regmap[6],branch_regs[i].regmap[7]); |
| 5817 | assert(s1l>=0); |
| 5818 | if((dops[i].opcode2&0x0d)==0) // BLTZ/BLTZL/BLTZAL/BLTZALL |
| 5819 | { |
| 5820 | emit_test(s1l,s1l); |
| 5821 | nottaken=out; |
| 5822 | emit_jns(DJT_1); |
| 5823 | } |
| 5824 | if((dops[i].opcode2&0x0d)==1) // BGEZ/BGEZL/BGEZAL/BGEZALL |
| 5825 | { |
| 5826 | emit_test(s1l,s1l); |
| 5827 | nottaken=out; |
| 5828 | emit_js(DJT_1); |
| 5829 | } |
| 5830 | } // if(!unconditional) |
| 5831 | int adj; |
| 5832 | uint64_t ds_unneeded=branch_regs[i].u; |
| 5833 | ds_unneeded&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 5834 | ds_unneeded|=1; |
| 5835 | // branch taken |
| 5836 | if(!nevertaken) { |
| 5837 | //assem_debug("1:\n"); |
| 5838 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,ds_unneeded); |
| 5839 | // load regs |
| 5840 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i+1].rs1,dops[i+1].rs2); |
| 5841 | address_generation(i+1,&branch_regs[i],0); |
| 5842 | if (ram_offset) |
| 5843 | load_reg(regs[i].regmap,branch_regs[i].regmap,ROREG); |
| 5844 | load_regs(regs[i].regmap,branch_regs[i].regmap,CCREG,INVCP); |
| 5845 | ds_assemble(i+1,&branch_regs[i]); |
| 5846 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5847 | if(cc==-1) { |
| 5848 | emit_loadreg(CCREG,cc=HOST_CCREG); |
| 5849 | // CHECK: Is the following instruction (fall thru) allocated ok? |
| 5850 | } |
| 5851 | assert(cc==HOST_CCREG); |
| 5852 | store_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5853 | do_cc(i,i_regmap,&adj,ba[i],TAKEN,0); |
| 5854 | assem_debug("cycle count (adj)\n"); |
| 5855 | if(adj) emit_addimm(cc, ccadj[i] + CLOCK_ADJUST(2) - adj, cc); |
| 5856 | load_regs_bt(branch_regs[i].regmap,branch_regs[i].dirty,ba[i]); |
| 5857 | if(internal) |
| 5858 | assem_debug("branch: internal\n"); |
| 5859 | else |
| 5860 | assem_debug("branch: external\n"); |
| 5861 | if (internal && dops[(ba[i] - start) >> 2].is_ds) { |
| 5862 | ds_assemble_entry(i); |
| 5863 | } |
| 5864 | else { |
| 5865 | add_to_linker(out,ba[i],internal); |
| 5866 | emit_jmp(0); |
| 5867 | } |
| 5868 | } |
| 5869 | // branch not taken |
| 5870 | if(!unconditional) { |
| 5871 | set_jump_target(nottaken, out); |
| 5872 | assem_debug("1:\n"); |
| 5873 | wb_invalidate(regs[i].regmap,branch_regs[i].regmap,regs[i].dirty,ds_unneeded); |
| 5874 | load_regs(regs[i].regmap,branch_regs[i].regmap,dops[i+1].rs1,dops[i+1].rs2); |
| 5875 | address_generation(i+1,&branch_regs[i],0); |
| 5876 | if (ram_offset) |
| 5877 | load_reg(regs[i].regmap,branch_regs[i].regmap,ROREG); |
| 5878 | load_regs(regs[i].regmap,branch_regs[i].regmap,CCREG,INVCP); |
| 5879 | ds_assemble(i+1,&branch_regs[i]); |
| 5880 | cc=get_reg(branch_regs[i].regmap,CCREG); |
| 5881 | if (cc == -1) { |
| 5882 | // Cycle count isn't in a register, temporarily load it then write it out |
| 5883 | emit_loadreg(CCREG,HOST_CCREG); |
| 5884 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), HOST_CCREG); |
| 5885 | void *jaddr=out; |
| 5886 | emit_jns(0); |
| 5887 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5888 | emit_storereg(CCREG,HOST_CCREG); |
| 5889 | } |
| 5890 | else{ |
| 5891 | cc=get_reg(i_regmap,CCREG); |
| 5892 | assert(cc==HOST_CCREG); |
| 5893 | emit_addimm_and_set_flags(ccadj[i] + CLOCK_ADJUST(2), cc); |
| 5894 | void *jaddr=out; |
| 5895 | emit_jns(0); |
| 5896 | add_stub(CC_STUB,jaddr,out,0,i,start+i*4+8,NOTTAKEN,0); |
| 5897 | } |
| 5898 | } |
| 5899 | } |
| 5900 | } |
| 5901 | |
| 5902 | static void pagespan_assemble(int i, const struct regstat *i_regs) |
| 5903 | { |
| 5904 | int s1l=get_reg(i_regs->regmap,dops[i].rs1); |
| 5905 | int s2l=get_reg(i_regs->regmap,dops[i].rs2); |
| 5906 | void *taken = NULL; |
| 5907 | void *nottaken = NULL; |
| 5908 | int unconditional=0; |
| 5909 | if(dops[i].rs1==0) |
| 5910 | { |
| 5911 | s1l=s2l; |
| 5912 | s2l=-1; |
| 5913 | } |
| 5914 | else if(dops[i].rs2==0) |
| 5915 | { |
| 5916 | s2l=-1; |
| 5917 | } |
| 5918 | int hr=0; |
| 5919 | int addr=-1,alt=-1,ntaddr=-1; |
| 5920 | if(i_regs->regmap[HOST_BTREG]<0) {addr=HOST_BTREG;} |
| 5921 | else { |
| 5922 | while(hr<HOST_REGS) |
| 5923 | { |
| 5924 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && |
| 5925 | i_regs->regmap[hr]!=dops[i].rs1 && |
| 5926 | i_regs->regmap[hr]!=dops[i].rs2 ) |
| 5927 | { |
| 5928 | addr=hr++;break; |
| 5929 | } |
| 5930 | hr++; |
| 5931 | } |
| 5932 | } |
| 5933 | while(hr<HOST_REGS) |
| 5934 | { |
| 5935 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && hr!=HOST_BTREG && |
| 5936 | i_regs->regmap[hr]!=dops[i].rs1 && |
| 5937 | i_regs->regmap[hr]!=dops[i].rs2 ) |
| 5938 | { |
| 5939 | alt=hr++;break; |
| 5940 | } |
| 5941 | hr++; |
| 5942 | } |
| 5943 | if((dops[i].opcode&0x2E)==6) // BLEZ/BGTZ needs another register |
| 5944 | { |
| 5945 | while(hr<HOST_REGS) |
| 5946 | { |
| 5947 | if(hr!=EXCLUDE_REG && hr!=HOST_CCREG && hr!=HOST_BTREG && |
| 5948 | i_regs->regmap[hr]!=dops[i].rs1 && |
| 5949 | i_regs->regmap[hr]!=dops[i].rs2 ) |
| 5950 | { |
| 5951 | ntaddr=hr;break; |
| 5952 | } |
| 5953 | hr++; |
| 5954 | } |
| 5955 | } |
| 5956 | assert(hr<HOST_REGS); |
| 5957 | if((dops[i].opcode&0x2e)==4||dops[i].opcode==0x11) { // BEQ/BNE/BEQL/BNEL/BC1 |
| 5958 | load_reg(regs[i].regmap_entry,regs[i].regmap,CCREG); |
| 5959 | } |
| 5960 | emit_addimm(HOST_CCREG, ccadj[i] + CLOCK_ADJUST(2), HOST_CCREG); |
| 5961 | if(dops[i].opcode==2) // J |
| 5962 | { |
| 5963 | unconditional=1; |
| 5964 | } |
| 5965 | if(dops[i].opcode==3) // JAL |
| 5966 | { |
| 5967 | // TODO: mini_ht |
| 5968 | int rt=get_reg(i_regs->regmap,31); |
| 5969 | emit_movimm(start+i*4+8,rt); |
| 5970 | unconditional=1; |
| 5971 | } |
| 5972 | if(dops[i].opcode==0&&(dops[i].opcode2&0x3E)==8) // JR/JALR |
| 5973 | { |
| 5974 | emit_mov(s1l,addr); |
| 5975 | if(dops[i].opcode2==9) // JALR |
| 5976 | { |
| 5977 | int rt=get_reg(i_regs->regmap,dops[i].rt1); |
| 5978 | emit_movimm(start+i*4+8,rt); |
| 5979 | } |
| 5980 | } |
| 5981 | if((dops[i].opcode&0x3f)==4) // BEQ |
| 5982 | { |
| 5983 | if(dops[i].rs1==dops[i].rs2) |
| 5984 | { |
| 5985 | unconditional=1; |
| 5986 | } |
| 5987 | else |
| 5988 | #ifdef HAVE_CMOV_IMM |
| 5989 | if(1) { |
| 5990 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 5991 | else emit_test(s1l,s1l); |
| 5992 | emit_cmov2imm_e_ne_compact(ba[i],start+i*4+8,addr); |
| 5993 | } |
| 5994 | else |
| 5995 | #endif |
| 5996 | { |
| 5997 | assert(s1l>=0); |
| 5998 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt); |
| 5999 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 6000 | else emit_test(s1l,s1l); |
| 6001 | emit_cmovne_reg(alt,addr); |
| 6002 | } |
| 6003 | } |
| 6004 | if((dops[i].opcode&0x3f)==5) // BNE |
| 6005 | { |
| 6006 | #ifdef HAVE_CMOV_IMM |
| 6007 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 6008 | else emit_test(s1l,s1l); |
| 6009 | emit_cmov2imm_e_ne_compact(start+i*4+8,ba[i],addr); |
| 6010 | #else |
| 6011 | assert(s1l>=0); |
| 6012 | emit_mov2imm_compact(start+i*4+8,addr,ba[i],alt); |
| 6013 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 6014 | else emit_test(s1l,s1l); |
| 6015 | emit_cmovne_reg(alt,addr); |
| 6016 | #endif |
| 6017 | } |
| 6018 | if((dops[i].opcode&0x3f)==0x14) // BEQL |
| 6019 | { |
| 6020 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 6021 | else emit_test(s1l,s1l); |
| 6022 | if(nottaken) set_jump_target(nottaken, out); |
| 6023 | nottaken=out; |
| 6024 | emit_jne(0); |
| 6025 | } |
| 6026 | if((dops[i].opcode&0x3f)==0x15) // BNEL |
| 6027 | { |
| 6028 | if(s2l>=0) emit_cmp(s1l,s2l); |
| 6029 | else emit_test(s1l,s1l); |
| 6030 | nottaken=out; |
| 6031 | emit_jeq(0); |
| 6032 | if(taken) set_jump_target(taken, out); |
| 6033 | } |
| 6034 | if((dops[i].opcode&0x3f)==6) // BLEZ |
| 6035 | { |
| 6036 | emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr); |
| 6037 | emit_cmpimm(s1l,1); |
| 6038 | emit_cmovl_reg(alt,addr); |
| 6039 | } |
| 6040 | if((dops[i].opcode&0x3f)==7) // BGTZ |
| 6041 | { |
| 6042 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,ntaddr); |
| 6043 | emit_cmpimm(s1l,1); |
| 6044 | emit_cmovl_reg(ntaddr,addr); |
| 6045 | } |
| 6046 | if((dops[i].opcode&0x3f)==0x16) // BLEZL |
| 6047 | { |
| 6048 | assert((dops[i].opcode&0x3f)!=0x16); |
| 6049 | } |
| 6050 | if((dops[i].opcode&0x3f)==0x17) // BGTZL |
| 6051 | { |
| 6052 | assert((dops[i].opcode&0x3f)!=0x17); |
| 6053 | } |
| 6054 | assert(dops[i].opcode!=1); // BLTZ/BGEZ |
| 6055 | |
| 6056 | //FIXME: Check CSREG |
| 6057 | if(dops[i].opcode==0x11 && dops[i].opcode2==0x08 ) { |
| 6058 | if((source[i]&0x30000)==0) // BC1F |
| 6059 | { |
| 6060 | emit_mov2imm_compact(ba[i],addr,start+i*4+8,alt); |
| 6061 | emit_testimm(s1l,0x800000); |
| 6062 | emit_cmovne_reg(alt,addr); |
| 6063 | } |
| 6064 | if((source[i]&0x30000)==0x10000) // BC1T |
| 6065 | { |
| 6066 | emit_mov2imm_compact(ba[i],alt,start+i*4+8,addr); |
| 6067 | emit_testimm(s1l,0x800000); |
| 6068 | emit_cmovne_reg(alt,addr); |
| 6069 | } |
| 6070 | if((source[i]&0x30000)==0x20000) // BC1FL |
| 6071 | { |
| 6072 | emit_testimm(s1l,0x800000); |
| 6073 | nottaken=out; |
| 6074 | emit_jne(0); |
| 6075 | } |
| 6076 | if((source[i]&0x30000)==0x30000) // BC1TL |
| 6077 | { |
| 6078 | emit_testimm(s1l,0x800000); |
| 6079 | nottaken=out; |
| 6080 | emit_jeq(0); |
| 6081 | } |
| 6082 | } |
| 6083 | |
| 6084 | assert(i_regs->regmap[HOST_CCREG]==CCREG); |
| 6085 | wb_dirtys(regs[i].regmap,regs[i].dirty); |
| 6086 | if(unconditional) |
| 6087 | { |
| 6088 | emit_movimm(ba[i],HOST_BTREG); |
| 6089 | } |
| 6090 | else if(addr!=HOST_BTREG) |
| 6091 | { |
| 6092 | emit_mov(addr,HOST_BTREG); |
| 6093 | } |
| 6094 | void *branch_addr=out; |
| 6095 | emit_jmp(0); |
| 6096 | int target_addr=start+i*4+5; |
| 6097 | void *stub=out; |
| 6098 | void *compiled_target_addr=check_addr(target_addr); |
| 6099 | emit_extjump_ds(branch_addr, target_addr); |
| 6100 | if(compiled_target_addr) { |
| 6101 | set_jump_target(branch_addr, compiled_target_addr); |
| 6102 | add_jump_out(target_addr,stub); |
| 6103 | } |
| 6104 | else set_jump_target(branch_addr, stub); |
| 6105 | } |
| 6106 | |
| 6107 | // Assemble the delay slot for the above |
| 6108 | static void pagespan_ds() |
| 6109 | { |
| 6110 | assem_debug("initial delay slot:\n"); |
| 6111 | u_int vaddr=start+1; |
| 6112 | u_int page=get_page(vaddr); |
| 6113 | u_int vpage=get_vpage(vaddr); |
| 6114 | ll_add(jump_dirty+vpage,vaddr,(void *)out); |
| 6115 | do_dirty_stub_ds(slen*4); |
| 6116 | ll_add(jump_in+page,vaddr,(void *)out); |
| 6117 | assert(regs[0].regmap_entry[HOST_CCREG]==CCREG); |
| 6118 | if(regs[0].regmap[HOST_CCREG]!=CCREG) |
| 6119 | wb_register(CCREG,regs[0].regmap_entry,regs[0].wasdirty); |
| 6120 | if(regs[0].regmap[HOST_BTREG]!=BTREG) |
| 6121 | emit_writeword(HOST_BTREG,&branch_target); |
| 6122 | load_regs(regs[0].regmap_entry,regs[0].regmap,dops[0].rs1,dops[0].rs2); |
| 6123 | address_generation(0,®s[0],regs[0].regmap_entry); |
| 6124 | if (ram_offset && (dops[0].is_load || dops[0].is_store)) |
| 6125 | load_reg(regs[0].regmap_entry,regs[0].regmap,ROREG); |
| 6126 | if (dops[0].is_store) |
| 6127 | load_reg(regs[0].regmap_entry,regs[0].regmap,INVCP); |
| 6128 | is_delayslot=0; |
| 6129 | switch (dops[0].itype) { |
| 6130 | case SYSCALL: |
| 6131 | case HLECALL: |
| 6132 | case INTCALL: |
| 6133 | case SPAN: |
| 6134 | case UJUMP: |
| 6135 | case RJUMP: |
| 6136 | case CJUMP: |
| 6137 | case SJUMP: |
| 6138 | SysPrintf("Jump in the delay slot. This is probably a bug.\n"); |
| 6139 | break; |
| 6140 | default: |
| 6141 | assemble(0, ®s[0], 0); |
| 6142 | } |
| 6143 | int btaddr=get_reg(regs[0].regmap,BTREG); |
| 6144 | if(btaddr<0) { |
| 6145 | btaddr=get_reg_temp(regs[0].regmap); |
| 6146 | emit_readword(&branch_target,btaddr); |
| 6147 | } |
| 6148 | assert(btaddr!=HOST_CCREG); |
| 6149 | if(regs[0].regmap[HOST_CCREG]!=CCREG) emit_loadreg(CCREG,HOST_CCREG); |
| 6150 | #ifdef HOST_IMM8 |
| 6151 | host_tempreg_acquire(); |
| 6152 | emit_movimm(start+4,HOST_TEMPREG); |
| 6153 | emit_cmp(btaddr,HOST_TEMPREG); |
| 6154 | host_tempreg_release(); |
| 6155 | #else |
| 6156 | emit_cmpimm(btaddr,start+4); |
| 6157 | #endif |
| 6158 | void *branch = out; |
| 6159 | emit_jeq(0); |
| 6160 | store_regs_bt(regs[0].regmap,regs[0].dirty,-1); |
| 6161 | do_jump_vaddr(btaddr); |
| 6162 | set_jump_target(branch, out); |
| 6163 | store_regs_bt(regs[0].regmap,regs[0].dirty,start+4); |
| 6164 | load_regs_bt(regs[0].regmap,regs[0].dirty,start+4); |
| 6165 | } |
| 6166 | |
| 6167 | static void check_regmap(signed char *regmap) |
| 6168 | { |
| 6169 | #ifndef NDEBUG |
| 6170 | int i,j; |
| 6171 | for (i = 0; i < HOST_REGS; i++) { |
| 6172 | if (regmap[i] < 0) |
| 6173 | continue; |
| 6174 | for (j = i + 1; j < HOST_REGS; j++) |
| 6175 | assert(regmap[i] != regmap[j]); |
| 6176 | } |
| 6177 | #endif |
| 6178 | } |
| 6179 | |
| 6180 | #ifdef DISASM |
| 6181 | #include <inttypes.h> |
| 6182 | static char insn[MAXBLOCK][10]; |
| 6183 | |
| 6184 | #define set_mnemonic(i_, n_) \ |
| 6185 | strcpy(insn[i_], n_) |
| 6186 | |
| 6187 | void print_regmap(const char *name, const signed char *regmap) |
| 6188 | { |
| 6189 | char buf[5]; |
| 6190 | int i, l; |
| 6191 | fputs(name, stdout); |
| 6192 | for (i = 0; i < HOST_REGS; i++) { |
| 6193 | l = 0; |
| 6194 | if (regmap[i] >= 0) |
| 6195 | l = snprintf(buf, sizeof(buf), "$%d", regmap[i]); |
| 6196 | for (; l < 3; l++) |
| 6197 | buf[l] = ' '; |
| 6198 | buf[l] = 0; |
| 6199 | printf(" r%d=%s", i, buf); |
| 6200 | } |
| 6201 | fputs("\n", stdout); |
| 6202 | } |
| 6203 | |
| 6204 | /* disassembly */ |
| 6205 | void disassemble_inst(int i) |
| 6206 | { |
| 6207 | if (dops[i].bt) printf("*"); else printf(" "); |
| 6208 | switch(dops[i].itype) { |
| 6209 | case UJUMP: |
| 6210 | printf (" %x: %s %8x\n",start+i*4,insn[i],ba[i]);break; |
| 6211 | case CJUMP: |
| 6212 | printf (" %x: %s r%d,r%d,%8x\n",start+i*4,insn[i],dops[i].rs1,dops[i].rs2,i?start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14):*ba);break; |
| 6213 | case SJUMP: |
| 6214 | printf (" %x: %s r%d,%8x\n",start+i*4,insn[i],dops[i].rs1,start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14));break; |
| 6215 | case RJUMP: |
| 6216 | if (dops[i].opcode==0x9&&dops[i].rt1!=31) |
| 6217 | printf (" %x: %s r%d,r%d\n",start+i*4,insn[i],dops[i].rt1,dops[i].rs1); |
| 6218 | else |
| 6219 | printf (" %x: %s r%d\n",start+i*4,insn[i],dops[i].rs1); |
| 6220 | break; |
| 6221 | case SPAN: |
| 6222 | printf (" %x: %s (pagespan) r%d,r%d,%8x\n",start+i*4,insn[i],dops[i].rs1,dops[i].rs2,ba[i]);break; |
| 6223 | case IMM16: |
| 6224 | if(dops[i].opcode==0xf) //LUI |
| 6225 | printf (" %x: %s r%d,%4x0000\n",start+i*4,insn[i],dops[i].rt1,imm[i]&0xffff); |
| 6226 | else |
| 6227 | printf (" %x: %s r%d,r%d,%d\n",start+i*4,insn[i],dops[i].rt1,dops[i].rs1,imm[i]); |
| 6228 | break; |
| 6229 | case LOAD: |
| 6230 | case LOADLR: |
| 6231 | printf (" %x: %s r%d,r%d+%x\n",start+i*4,insn[i],dops[i].rt1,dops[i].rs1,imm[i]); |
| 6232 | break; |
| 6233 | case STORE: |
| 6234 | case STORELR: |
| 6235 | printf (" %x: %s r%d,r%d+%x\n",start+i*4,insn[i],dops[i].rs2,dops[i].rs1,imm[i]); |
| 6236 | break; |
| 6237 | case ALU: |
| 6238 | case SHIFT: |
| 6239 | printf (" %x: %s r%d,r%d,r%d\n",start+i*4,insn[i],dops[i].rt1,dops[i].rs1,dops[i].rs2); |
| 6240 | break; |
| 6241 | case MULTDIV: |
| 6242 | printf (" %x: %s r%d,r%d\n",start+i*4,insn[i],dops[i].rs1,dops[i].rs2); |
| 6243 | break; |
| 6244 | case SHIFTIMM: |
| 6245 | printf (" %x: %s r%d,r%d,%d\n",start+i*4,insn[i],dops[i].rt1,dops[i].rs1,imm[i]); |
| 6246 | break; |
| 6247 | case MOV: |
| 6248 | if((dops[i].opcode2&0x1d)==0x10) |
| 6249 | printf (" %x: %s r%d\n",start+i*4,insn[i],dops[i].rt1); |
| 6250 | else if((dops[i].opcode2&0x1d)==0x11) |
| 6251 | printf (" %x: %s r%d\n",start+i*4,insn[i],dops[i].rs1); |
| 6252 | else |
| 6253 | printf (" %x: %s\n",start+i*4,insn[i]); |
| 6254 | break; |
| 6255 | case COP0: |
| 6256 | if(dops[i].opcode2==0) |
| 6257 | printf (" %x: %s r%d,cpr0[%d]\n",start+i*4,insn[i],dops[i].rt1,(source[i]>>11)&0x1f); // MFC0 |
| 6258 | else if(dops[i].opcode2==4) |
| 6259 | printf (" %x: %s r%d,cpr0[%d]\n",start+i*4,insn[i],dops[i].rs1,(source[i]>>11)&0x1f); // MTC0 |
| 6260 | else printf (" %x: %s\n",start+i*4,insn[i]); |
| 6261 | break; |
| 6262 | case COP1: |
| 6263 | if(dops[i].opcode2<3) |
| 6264 | printf (" %x: %s r%d,cpr1[%d]\n",start+i*4,insn[i],dops[i].rt1,(source[i]>>11)&0x1f); // MFC1 |
| 6265 | else if(dops[i].opcode2>3) |
| 6266 | printf (" %x: %s r%d,cpr1[%d]\n",start+i*4,insn[i],dops[i].rs1,(source[i]>>11)&0x1f); // MTC1 |
| 6267 | else printf (" %x: %s\n",start+i*4,insn[i]); |
| 6268 | break; |
| 6269 | case COP2: |
| 6270 | if(dops[i].opcode2<3) |
| 6271 | printf (" %x: %s r%d,cpr2[%d]\n",start+i*4,insn[i],dops[i].rt1,(source[i]>>11)&0x1f); // MFC2 |
| 6272 | else if(dops[i].opcode2>3) |
| 6273 | printf (" %x: %s r%d,cpr2[%d]\n",start+i*4,insn[i],dops[i].rs1,(source[i]>>11)&0x1f); // MTC2 |
| 6274 | else printf (" %x: %s\n",start+i*4,insn[i]); |
| 6275 | break; |
| 6276 | case C1LS: |
| 6277 | printf (" %x: %s cpr1[%d],r%d+%x\n",start+i*4,insn[i],(source[i]>>16)&0x1f,dops[i].rs1,imm[i]); |
| 6278 | break; |
| 6279 | case C2LS: |
| 6280 | printf (" %x: %s cpr2[%d],r%d+%x\n",start+i*4,insn[i],(source[i]>>16)&0x1f,dops[i].rs1,imm[i]); |
| 6281 | break; |
| 6282 | case INTCALL: |
| 6283 | printf (" %x: %s (INTCALL)\n",start+i*4,insn[i]); |
| 6284 | break; |
| 6285 | default: |
| 6286 | //printf (" %s %8x\n",insn[i],source[i]); |
| 6287 | printf (" %x: %s\n",start+i*4,insn[i]); |
| 6288 | } |
| 6289 | return; |
| 6290 | printf("D: %"PRIu64" WD: %"PRIu64" U: %"PRIu64"\n", |
| 6291 | regs[i].dirty, regs[i].wasdirty, unneeded_reg[i]); |
| 6292 | print_regmap("pre: ", regmap_pre[i]); |
| 6293 | print_regmap("entry: ", regs[i].regmap_entry); |
| 6294 | print_regmap("map: ", regs[i].regmap); |
| 6295 | if (dops[i].is_jump) { |
| 6296 | print_regmap("bentry:", branch_regs[i].regmap_entry); |
| 6297 | print_regmap("bmap: ", branch_regs[i].regmap); |
| 6298 | } |
| 6299 | } |
| 6300 | #else |
| 6301 | #define set_mnemonic(i_, n_) |
| 6302 | static void disassemble_inst(int i) {} |
| 6303 | #endif // DISASM |
| 6304 | |
| 6305 | #define DRC_TEST_VAL 0x74657374 |
| 6306 | |
| 6307 | static void new_dynarec_test(void) |
| 6308 | { |
| 6309 | int (*testfunc)(void); |
| 6310 | void *beginning; |
| 6311 | int ret[2]; |
| 6312 | size_t i; |
| 6313 | |
| 6314 | // check structure linkage |
| 6315 | if ((u_char *)rcnts - (u_char *)&psxRegs != sizeof(psxRegs)) |
| 6316 | { |
| 6317 | SysPrintf("linkage_arm* miscompilation/breakage detected.\n"); |
| 6318 | } |
| 6319 | |
| 6320 | SysPrintf("testing if we can run recompiled code @%p...\n", out); |
| 6321 | ((volatile u_int *)out)[0]++; // make cache dirty |
| 6322 | |
| 6323 | for (i = 0; i < ARRAY_SIZE(ret); i++) { |
| 6324 | out = ndrc->translation_cache; |
| 6325 | beginning = start_block(); |
| 6326 | emit_movimm(DRC_TEST_VAL + i, 0); // test |
| 6327 | emit_ret(); |
| 6328 | literal_pool(0); |
| 6329 | end_block(beginning); |
| 6330 | testfunc = beginning; |
| 6331 | ret[i] = testfunc(); |
| 6332 | } |
| 6333 | |
| 6334 | if (ret[0] == DRC_TEST_VAL && ret[1] == DRC_TEST_VAL + 1) |
| 6335 | SysPrintf("test passed.\n"); |
| 6336 | else |
| 6337 | SysPrintf("test failed, will likely crash soon (r=%08x %08x)\n", ret[0], ret[1]); |
| 6338 | out = ndrc->translation_cache; |
| 6339 | } |
| 6340 | |
| 6341 | // clear the state completely, instead of just marking |
| 6342 | // things invalid like invalidate_all_pages() does |
| 6343 | void new_dynarec_clear_full(void) |
| 6344 | { |
| 6345 | int n; |
| 6346 | out = ndrc->translation_cache; |
| 6347 | memset(invalid_code,1,sizeof(invalid_code)); |
| 6348 | memset(hash_table,0xff,sizeof(hash_table)); |
| 6349 | memset(mini_ht,-1,sizeof(mini_ht)); |
| 6350 | memset(restore_candidate,0,sizeof(restore_candidate)); |
| 6351 | memset(shadow,0,sizeof(shadow)); |
| 6352 | copy=shadow; |
| 6353 | expirep=16384; // Expiry pointer, +2 blocks |
| 6354 | pending_exception=0; |
| 6355 | literalcount=0; |
| 6356 | stop_after_jal=0; |
| 6357 | inv_code_start=inv_code_end=~0; |
| 6358 | hack_addr=0; |
| 6359 | f1_hack=0; |
| 6360 | // TLB |
| 6361 | for(n=0;n<4096;n++) ll_clear(jump_in+n); |
| 6362 | for(n=0;n<4096;n++) ll_clear(jump_out+n); |
| 6363 | for(n=0;n<4096;n++) ll_clear(jump_dirty+n); |
| 6364 | |
| 6365 | cycle_multiplier_old = cycle_multiplier; |
| 6366 | new_dynarec_hacks_old = new_dynarec_hacks; |
| 6367 | } |
| 6368 | |
| 6369 | void new_dynarec_init(void) |
| 6370 | { |
| 6371 | SysPrintf("Init new dynarec, ndrc size %x\n", (int)sizeof(*ndrc)); |
| 6372 | |
| 6373 | #ifdef _3DS |
| 6374 | check_rosalina(); |
| 6375 | #endif |
| 6376 | #ifdef BASE_ADDR_DYNAMIC |
| 6377 | #ifdef VITA |
| 6378 | sceBlock = getVMBlock(); //sceKernelAllocMemBlockForVM("code", sizeof(*ndrc)); |
| 6379 | if (sceBlock <= 0) |
| 6380 | SysPrintf("sceKernelAllocMemBlockForVM failed: %x\n", sceBlock); |
| 6381 | int ret = sceKernelGetMemBlockBase(sceBlock, (void **)&ndrc); |
| 6382 | if (ret < 0) |
| 6383 | SysPrintf("sceKernelGetMemBlockBase failed: %x\n", ret); |
| 6384 | sceKernelOpenVMDomain(); |
| 6385 | sceClibPrintf("translation_cache = 0x%08lx\n ", (long)ndrc->translation_cache); |
| 6386 | #elif defined(_MSC_VER) |
| 6387 | ndrc = VirtualAlloc(NULL, sizeof(*ndrc), MEM_COMMIT | MEM_RESERVE, |
| 6388 | PAGE_EXECUTE_READWRITE); |
| 6389 | #else |
| 6390 | uintptr_t desired_addr = 0; |
| 6391 | #ifdef __ELF__ |
| 6392 | extern char _end; |
| 6393 | desired_addr = ((uintptr_t)&_end + 0xffffff) & ~0xffffffl; |
| 6394 | #endif |
| 6395 | ndrc = mmap((void *)desired_addr, sizeof(*ndrc), |
| 6396 | PROT_READ | PROT_WRITE | PROT_EXEC, |
| 6397 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 6398 | if (ndrc == MAP_FAILED) { |
| 6399 | SysPrintf("mmap() failed: %s\n", strerror(errno)); |
| 6400 | abort(); |
| 6401 | } |
| 6402 | #endif |
| 6403 | #else |
| 6404 | #ifndef NO_WRITE_EXEC |
| 6405 | // not all systems allow execute in data segment by default |
| 6406 | // size must be 4K aligned for 3DS? |
| 6407 | if (mprotect(ndrc, sizeof(*ndrc), |
| 6408 | PROT_READ | PROT_WRITE | PROT_EXEC) != 0) |
| 6409 | SysPrintf("mprotect() failed: %s\n", strerror(errno)); |
| 6410 | #endif |
| 6411 | #endif |
| 6412 | out = ndrc->translation_cache; |
| 6413 | cycle_multiplier=200; |
| 6414 | new_dynarec_clear_full(); |
| 6415 | #ifdef HOST_IMM8 |
| 6416 | // Copy this into local area so we don't have to put it in every literal pool |
| 6417 | invc_ptr=invalid_code; |
| 6418 | #endif |
| 6419 | arch_init(); |
| 6420 | new_dynarec_test(); |
| 6421 | ram_offset=(uintptr_t)rdram-0x80000000; |
| 6422 | if (ram_offset!=0) |
| 6423 | SysPrintf("warning: RAM is not directly mapped, performance will suffer\n"); |
| 6424 | } |
| 6425 | |
| 6426 | void new_dynarec_cleanup(void) |
| 6427 | { |
| 6428 | int n; |
| 6429 | #ifdef BASE_ADDR_DYNAMIC |
| 6430 | #ifdef VITA |
| 6431 | // sceBlock is managed by retroarch's bootstrap code |
| 6432 | //sceKernelFreeMemBlock(sceBlock); |
| 6433 | //sceBlock = -1; |
| 6434 | #else |
| 6435 | if (munmap(ndrc, sizeof(*ndrc)) < 0) |
| 6436 | SysPrintf("munmap() failed\n"); |
| 6437 | #endif |
| 6438 | #endif |
| 6439 | for(n=0;n<4096;n++) ll_clear(jump_in+n); |
| 6440 | for(n=0;n<4096;n++) ll_clear(jump_out+n); |
| 6441 | for(n=0;n<4096;n++) ll_clear(jump_dirty+n); |
| 6442 | #ifdef ROM_COPY |
| 6443 | if (munmap (ROM_COPY, 67108864) < 0) {SysPrintf("munmap() failed\n");} |
| 6444 | #endif |
| 6445 | } |
| 6446 | |
| 6447 | static u_int *get_source_start(u_int addr, u_int *limit) |
| 6448 | { |
| 6449 | if (addr < 0x00200000 || |
| 6450 | (0xa0000000 <= addr && addr < 0xa0200000)) |
| 6451 | { |
| 6452 | // used for BIOS calls mostly? |
| 6453 | *limit = (addr&0xa0000000)|0x00200000; |
| 6454 | return (u_int *)(rdram + (addr&0x1fffff)); |
| 6455 | } |
| 6456 | else if (!Config.HLE && ( |
| 6457 | /* (0x9fc00000 <= addr && addr < 0x9fc80000) ||*/ |
| 6458 | (0xbfc00000 <= addr && addr < 0xbfc80000))) |
| 6459 | { |
| 6460 | // BIOS. The multiplier should be much higher as it's uncached 8bit mem, |
| 6461 | // but timings in PCSX are too tied to the interpreter's BIAS |
| 6462 | if (!HACK_ENABLED(NDHACK_OVERRIDE_CYCLE_M)) |
| 6463 | cycle_multiplier_active = 200; |
| 6464 | |
| 6465 | *limit = (addr & 0xfff00000) | 0x80000; |
| 6466 | return (u_int *)((u_char *)psxR + (addr&0x7ffff)); |
| 6467 | } |
| 6468 | else if (addr >= 0x80000000 && addr < 0x80000000+RAM_SIZE) { |
| 6469 | *limit = (addr & 0x80600000) + 0x00200000; |
| 6470 | return (u_int *)(rdram + (addr&0x1fffff)); |
| 6471 | } |
| 6472 | return NULL; |
| 6473 | } |
| 6474 | |
| 6475 | static u_int scan_for_ret(u_int addr) |
| 6476 | { |
| 6477 | u_int limit = 0; |
| 6478 | u_int *mem; |
| 6479 | |
| 6480 | mem = get_source_start(addr, &limit); |
| 6481 | if (mem == NULL) |
| 6482 | return addr; |
| 6483 | |
| 6484 | if (limit > addr + 0x1000) |
| 6485 | limit = addr + 0x1000; |
| 6486 | for (; addr < limit; addr += 4, mem++) { |
| 6487 | if (*mem == 0x03e00008) // jr $ra |
| 6488 | return addr + 8; |
| 6489 | } |
| 6490 | return addr; |
| 6491 | } |
| 6492 | |
| 6493 | struct savestate_block { |
| 6494 | uint32_t addr; |
| 6495 | uint32_t regflags; |
| 6496 | }; |
| 6497 | |
| 6498 | static int addr_cmp(const void *p1_, const void *p2_) |
| 6499 | { |
| 6500 | const struct savestate_block *p1 = p1_, *p2 = p2_; |
| 6501 | return p1->addr - p2->addr; |
| 6502 | } |
| 6503 | |
| 6504 | int new_dynarec_save_blocks(void *save, int size) |
| 6505 | { |
| 6506 | struct savestate_block *blocks = save; |
| 6507 | int maxcount = size / sizeof(blocks[0]); |
| 6508 | struct savestate_block tmp_blocks[1024]; |
| 6509 | struct ll_entry *head; |
| 6510 | int p, s, d, o, bcnt; |
| 6511 | u_int addr; |
| 6512 | |
| 6513 | o = 0; |
| 6514 | for (p = 0; p < ARRAY_SIZE(jump_in); p++) { |
| 6515 | bcnt = 0; |
| 6516 | for (head = jump_in[p]; head != NULL; head = head->next) { |
| 6517 | tmp_blocks[bcnt].addr = head->vaddr; |
| 6518 | tmp_blocks[bcnt].regflags = head->reg_sv_flags; |
| 6519 | bcnt++; |
| 6520 | } |
| 6521 | if (bcnt < 1) |
| 6522 | continue; |
| 6523 | qsort(tmp_blocks, bcnt, sizeof(tmp_blocks[0]), addr_cmp); |
| 6524 | |
| 6525 | addr = tmp_blocks[0].addr; |
| 6526 | for (s = d = 0; s < bcnt; s++) { |
| 6527 | if (tmp_blocks[s].addr < addr) |
| 6528 | continue; |
| 6529 | if (d == 0 || tmp_blocks[d-1].addr != tmp_blocks[s].addr) |
| 6530 | tmp_blocks[d++] = tmp_blocks[s]; |
| 6531 | addr = scan_for_ret(tmp_blocks[s].addr); |
| 6532 | } |
| 6533 | |
| 6534 | if (o + d > maxcount) |
| 6535 | d = maxcount - o; |
| 6536 | memcpy(&blocks[o], tmp_blocks, d * sizeof(blocks[0])); |
| 6537 | o += d; |
| 6538 | } |
| 6539 | |
| 6540 | return o * sizeof(blocks[0]); |
| 6541 | } |
| 6542 | |
| 6543 | void new_dynarec_load_blocks(const void *save, int size) |
| 6544 | { |
| 6545 | const struct savestate_block *blocks = save; |
| 6546 | int count = size / sizeof(blocks[0]); |
| 6547 | u_int regs_save[32]; |
| 6548 | uint32_t f; |
| 6549 | int i, b; |
| 6550 | |
| 6551 | get_addr(psxRegs.pc); |
| 6552 | |
| 6553 | // change GPRs for speculation to at least partially work.. |
| 6554 | memcpy(regs_save, &psxRegs.GPR, sizeof(regs_save)); |
| 6555 | for (i = 1; i < 32; i++) |
| 6556 | psxRegs.GPR.r[i] = 0x80000000; |
| 6557 | |
| 6558 | for (b = 0; b < count; b++) { |
| 6559 | for (f = blocks[b].regflags, i = 0; f; f >>= 1, i++) { |
| 6560 | if (f & 1) |
| 6561 | psxRegs.GPR.r[i] = 0x1f800000; |
| 6562 | } |
| 6563 | |
| 6564 | get_addr(blocks[b].addr); |
| 6565 | |
| 6566 | for (f = blocks[b].regflags, i = 0; f; f >>= 1, i++) { |
| 6567 | if (f & 1) |
| 6568 | psxRegs.GPR.r[i] = 0x80000000; |
| 6569 | } |
| 6570 | } |
| 6571 | |
| 6572 | memcpy(&psxRegs.GPR, regs_save, sizeof(regs_save)); |
| 6573 | } |
| 6574 | |
| 6575 | static int apply_hacks(void) |
| 6576 | { |
| 6577 | int i; |
| 6578 | if (HACK_ENABLED(NDHACK_NO_COMPAT_HACKS)) |
| 6579 | return 0; |
| 6580 | /* special hack(s) */ |
| 6581 | for (i = 0; i < slen - 4; i++) |
| 6582 | { |
| 6583 | // lui a4, 0xf200; jal <rcnt_read>; addu a0, 2; slti v0, 28224 |
| 6584 | if (source[i] == 0x3c04f200 && dops[i+1].itype == UJUMP |
| 6585 | && source[i+2] == 0x34840002 && dops[i+3].opcode == 0x0a |
| 6586 | && imm[i+3] == 0x6e40 && dops[i+3].rs1 == 2) |
| 6587 | { |
| 6588 | SysPrintf("PE2 hack @%08x\n", start + (i+3)*4); |
| 6589 | dops[i + 3].itype = NOP; |
| 6590 | } |
| 6591 | } |
| 6592 | i = slen; |
| 6593 | if (i > 10 && source[i-1] == 0 && source[i-2] == 0x03e00008 |
| 6594 | && source[i-4] == 0x8fbf0018 && source[i-6] == 0x00c0f809 |
| 6595 | && dops[i-7].itype == STORE) |
| 6596 | { |
| 6597 | i = i-8; |
| 6598 | if (dops[i].itype == IMM16) |
| 6599 | i--; |
| 6600 | // swl r2, 15(r6); swr r2, 12(r6); sw r6, *; jalr r6 |
| 6601 | if (dops[i].itype == STORELR && dops[i].rs1 == 6 |
| 6602 | && dops[i-1].itype == STORELR && dops[i-1].rs1 == 6) |
| 6603 | { |
| 6604 | SysPrintf("F1 hack from %08x, old dst %08x\n", start, hack_addr); |
| 6605 | f1_hack = 1; |
| 6606 | return 1; |
| 6607 | } |
| 6608 | } |
| 6609 | return 0; |
| 6610 | } |
| 6611 | |
| 6612 | static noinline void pass1_disassemble(u_int pagelimit) |
| 6613 | { |
| 6614 | int i, j, done = 0, ni_count = 0; |
| 6615 | unsigned int type,op,op2; |
| 6616 | |
| 6617 | for (i = 0; !done; i++) |
| 6618 | { |
| 6619 | memset(&dops[i], 0, sizeof(dops[i])); |
| 6620 | op2=0; |
| 6621 | minimum_free_regs[i]=0; |
| 6622 | dops[i].opcode=op=source[i]>>26; |
| 6623 | switch(op) |
| 6624 | { |
| 6625 | case 0x00: set_mnemonic(i, "special"); type=NI; |
| 6626 | op2=source[i]&0x3f; |
| 6627 | switch(op2) |
| 6628 | { |
| 6629 | case 0x00: set_mnemonic(i, "SLL"); type=SHIFTIMM; break; |
| 6630 | case 0x02: set_mnemonic(i, "SRL"); type=SHIFTIMM; break; |
| 6631 | case 0x03: set_mnemonic(i, "SRA"); type=SHIFTIMM; break; |
| 6632 | case 0x04: set_mnemonic(i, "SLLV"); type=SHIFT; break; |
| 6633 | case 0x06: set_mnemonic(i, "SRLV"); type=SHIFT; break; |
| 6634 | case 0x07: set_mnemonic(i, "SRAV"); type=SHIFT; break; |
| 6635 | case 0x08: set_mnemonic(i, "JR"); type=RJUMP; break; |
| 6636 | case 0x09: set_mnemonic(i, "JALR"); type=RJUMP; break; |
| 6637 | case 0x0C: set_mnemonic(i, "SYSCALL"); type=SYSCALL; break; |
| 6638 | case 0x0D: set_mnemonic(i, "BREAK"); type=SYSCALL; break; |
| 6639 | case 0x0F: set_mnemonic(i, "SYNC"); type=OTHER; break; |
| 6640 | case 0x10: set_mnemonic(i, "MFHI"); type=MOV; break; |
| 6641 | case 0x11: set_mnemonic(i, "MTHI"); type=MOV; break; |
| 6642 | case 0x12: set_mnemonic(i, "MFLO"); type=MOV; break; |
| 6643 | case 0x13: set_mnemonic(i, "MTLO"); type=MOV; break; |
| 6644 | case 0x18: set_mnemonic(i, "MULT"); type=MULTDIV; break; |
| 6645 | case 0x19: set_mnemonic(i, "MULTU"); type=MULTDIV; break; |
| 6646 | case 0x1A: set_mnemonic(i, "DIV"); type=MULTDIV; break; |
| 6647 | case 0x1B: set_mnemonic(i, "DIVU"); type=MULTDIV; break; |
| 6648 | case 0x20: set_mnemonic(i, "ADD"); type=ALU; break; |
| 6649 | case 0x21: set_mnemonic(i, "ADDU"); type=ALU; break; |
| 6650 | case 0x22: set_mnemonic(i, "SUB"); type=ALU; break; |
| 6651 | case 0x23: set_mnemonic(i, "SUBU"); type=ALU; break; |
| 6652 | case 0x24: set_mnemonic(i, "AND"); type=ALU; break; |
| 6653 | case 0x25: set_mnemonic(i, "OR"); type=ALU; break; |
| 6654 | case 0x26: set_mnemonic(i, "XOR"); type=ALU; break; |
| 6655 | case 0x27: set_mnemonic(i, "NOR"); type=ALU; break; |
| 6656 | case 0x2A: set_mnemonic(i, "SLT"); type=ALU; break; |
| 6657 | case 0x2B: set_mnemonic(i, "SLTU"); type=ALU; break; |
| 6658 | case 0x30: set_mnemonic(i, "TGE"); type=NI; break; |
| 6659 | case 0x31: set_mnemonic(i, "TGEU"); type=NI; break; |
| 6660 | case 0x32: set_mnemonic(i, "TLT"); type=NI; break; |
| 6661 | case 0x33: set_mnemonic(i, "TLTU"); type=NI; break; |
| 6662 | case 0x34: set_mnemonic(i, "TEQ"); type=NI; break; |
| 6663 | case 0x36: set_mnemonic(i, "TNE"); type=NI; break; |
| 6664 | #if 0 |
| 6665 | case 0x14: set_mnemonic(i, "DSLLV"); type=SHIFT; break; |
| 6666 | case 0x16: set_mnemonic(i, "DSRLV"); type=SHIFT; break; |
| 6667 | case 0x17: set_mnemonic(i, "DSRAV"); type=SHIFT; break; |
| 6668 | case 0x1C: set_mnemonic(i, "DMULT"); type=MULTDIV; break; |
| 6669 | case 0x1D: set_mnemonic(i, "DMULTU"); type=MULTDIV; break; |
| 6670 | case 0x1E: set_mnemonic(i, "DDIV"); type=MULTDIV; break; |
| 6671 | case 0x1F: set_mnemonic(i, "DDIVU"); type=MULTDIV; break; |
| 6672 | case 0x2C: set_mnemonic(i, "DADD"); type=ALU; break; |
| 6673 | case 0x2D: set_mnemonic(i, "DADDU"); type=ALU; break; |
| 6674 | case 0x2E: set_mnemonic(i, "DSUB"); type=ALU; break; |
| 6675 | case 0x2F: set_mnemonic(i, "DSUBU"); type=ALU; break; |
| 6676 | case 0x38: set_mnemonic(i, "DSLL"); type=SHIFTIMM; break; |
| 6677 | case 0x3A: set_mnemonic(i, "DSRL"); type=SHIFTIMM; break; |
| 6678 | case 0x3B: set_mnemonic(i, "DSRA"); type=SHIFTIMM; break; |
| 6679 | case 0x3C: set_mnemonic(i, "DSLL32"); type=SHIFTIMM; break; |
| 6680 | case 0x3E: set_mnemonic(i, "DSRL32"); type=SHIFTIMM; break; |
| 6681 | case 0x3F: set_mnemonic(i, "DSRA32"); type=SHIFTIMM; break; |
| 6682 | #endif |
| 6683 | } |
| 6684 | break; |
| 6685 | case 0x01: set_mnemonic(i, "regimm"); type=NI; |
| 6686 | op2=(source[i]>>16)&0x1f; |
| 6687 | switch(op2) |
| 6688 | { |
| 6689 | case 0x00: set_mnemonic(i, "BLTZ"); type=SJUMP; break; |
| 6690 | case 0x01: set_mnemonic(i, "BGEZ"); type=SJUMP; break; |
| 6691 | //case 0x02: set_mnemonic(i, "BLTZL"); type=SJUMP; break; |
| 6692 | //case 0x03: set_mnemonic(i, "BGEZL"); type=SJUMP; break; |
| 6693 | //case 0x08: set_mnemonic(i, "TGEI"); type=NI; break; |
| 6694 | //case 0x09: set_mnemonic(i, "TGEIU"); type=NI; break; |
| 6695 | //case 0x0A: set_mnemonic(i, "TLTI"); type=NI; break; |
| 6696 | //case 0x0B: set_mnemonic(i, "TLTIU"); type=NI; break; |
| 6697 | //case 0x0C: set_mnemonic(i, "TEQI"); type=NI; break; |
| 6698 | //case 0x0E: set_mnemonic(i, "TNEI"); type=NI; break; |
| 6699 | case 0x10: set_mnemonic(i, "BLTZAL"); type=SJUMP; break; |
| 6700 | case 0x11: set_mnemonic(i, "BGEZAL"); type=SJUMP; break; |
| 6701 | //case 0x12: set_mnemonic(i, "BLTZALL"); type=SJUMP; break; |
| 6702 | //case 0x13: set_mnemonic(i, "BGEZALL"); type=SJUMP; break; |
| 6703 | } |
| 6704 | break; |
| 6705 | case 0x02: set_mnemonic(i, "J"); type=UJUMP; break; |
| 6706 | case 0x03: set_mnemonic(i, "JAL"); type=UJUMP; break; |
| 6707 | case 0x04: set_mnemonic(i, "BEQ"); type=CJUMP; break; |
| 6708 | case 0x05: set_mnemonic(i, "BNE"); type=CJUMP; break; |
| 6709 | case 0x06: set_mnemonic(i, "BLEZ"); type=CJUMP; break; |
| 6710 | case 0x07: set_mnemonic(i, "BGTZ"); type=CJUMP; break; |
| 6711 | case 0x08: set_mnemonic(i, "ADDI"); type=IMM16; break; |
| 6712 | case 0x09: set_mnemonic(i, "ADDIU"); type=IMM16; break; |
| 6713 | case 0x0A: set_mnemonic(i, "SLTI"); type=IMM16; break; |
| 6714 | case 0x0B: set_mnemonic(i, "SLTIU"); type=IMM16; break; |
| 6715 | case 0x0C: set_mnemonic(i, "ANDI"); type=IMM16; break; |
| 6716 | case 0x0D: set_mnemonic(i, "ORI"); type=IMM16; break; |
| 6717 | case 0x0E: set_mnemonic(i, "XORI"); type=IMM16; break; |
| 6718 | case 0x0F: set_mnemonic(i, "LUI"); type=IMM16; break; |
| 6719 | case 0x10: set_mnemonic(i, "cop0"); type=NI; |
| 6720 | op2=(source[i]>>21)&0x1f; |
| 6721 | switch(op2) |
| 6722 | { |
| 6723 | case 0x00: set_mnemonic(i, "MFC0"); type=COP0; break; |
| 6724 | case 0x02: set_mnemonic(i, "CFC0"); type=COP0; break; |
| 6725 | case 0x04: set_mnemonic(i, "MTC0"); type=COP0; break; |
| 6726 | case 0x06: set_mnemonic(i, "CTC0"); type=COP0; break; |
| 6727 | case 0x10: set_mnemonic(i, "RFE"); type=COP0; break; |
| 6728 | } |
| 6729 | break; |
| 6730 | case 0x11: set_mnemonic(i, "cop1"); type=COP1; |
| 6731 | op2=(source[i]>>21)&0x1f; |
| 6732 | break; |
| 6733 | #if 0 |
| 6734 | case 0x14: set_mnemonic(i, "BEQL"); type=CJUMP; break; |
| 6735 | case 0x15: set_mnemonic(i, "BNEL"); type=CJUMP; break; |
| 6736 | case 0x16: set_mnemonic(i, "BLEZL"); type=CJUMP; break; |
| 6737 | case 0x17: set_mnemonic(i, "BGTZL"); type=CJUMP; break; |
| 6738 | case 0x18: set_mnemonic(i, "DADDI"); type=IMM16; break; |
| 6739 | case 0x19: set_mnemonic(i, "DADDIU"); type=IMM16; break; |
| 6740 | case 0x1A: set_mnemonic(i, "LDL"); type=LOADLR; break; |
| 6741 | case 0x1B: set_mnemonic(i, "LDR"); type=LOADLR; break; |
| 6742 | #endif |
| 6743 | case 0x20: set_mnemonic(i, "LB"); type=LOAD; break; |
| 6744 | case 0x21: set_mnemonic(i, "LH"); type=LOAD; break; |
| 6745 | case 0x22: set_mnemonic(i, "LWL"); type=LOADLR; break; |
| 6746 | case 0x23: set_mnemonic(i, "LW"); type=LOAD; break; |
| 6747 | case 0x24: set_mnemonic(i, "LBU"); type=LOAD; break; |
| 6748 | case 0x25: set_mnemonic(i, "LHU"); type=LOAD; break; |
| 6749 | case 0x26: set_mnemonic(i, "LWR"); type=LOADLR; break; |
| 6750 | #if 0 |
| 6751 | case 0x27: set_mnemonic(i, "LWU"); type=LOAD; break; |
| 6752 | #endif |
| 6753 | case 0x28: set_mnemonic(i, "SB"); type=STORE; break; |
| 6754 | case 0x29: set_mnemonic(i, "SH"); type=STORE; break; |
| 6755 | case 0x2A: set_mnemonic(i, "SWL"); type=STORELR; break; |
| 6756 | case 0x2B: set_mnemonic(i, "SW"); type=STORE; break; |
| 6757 | #if 0 |
| 6758 | case 0x2C: set_mnemonic(i, "SDL"); type=STORELR; break; |
| 6759 | case 0x2D: set_mnemonic(i, "SDR"); type=STORELR; break; |
| 6760 | #endif |
| 6761 | case 0x2E: set_mnemonic(i, "SWR"); type=STORELR; break; |
| 6762 | case 0x2F: set_mnemonic(i, "CACHE"); type=NOP; break; |
| 6763 | case 0x30: set_mnemonic(i, "LL"); type=NI; break; |
| 6764 | case 0x31: set_mnemonic(i, "LWC1"); type=C1LS; break; |
| 6765 | #if 0 |
| 6766 | case 0x34: set_mnemonic(i, "LLD"); type=NI; break; |
| 6767 | case 0x35: set_mnemonic(i, "LDC1"); type=C1LS; break; |
| 6768 | case 0x37: set_mnemonic(i, "LD"); type=LOAD; break; |
| 6769 | #endif |
| 6770 | case 0x38: set_mnemonic(i, "SC"); type=NI; break; |
| 6771 | case 0x39: set_mnemonic(i, "SWC1"); type=C1LS; break; |
| 6772 | #if 0 |
| 6773 | case 0x3C: set_mnemonic(i, "SCD"); type=NI; break; |
| 6774 | case 0x3D: set_mnemonic(i, "SDC1"); type=C1LS; break; |
| 6775 | case 0x3F: set_mnemonic(i, "SD"); type=STORE; break; |
| 6776 | #endif |
| 6777 | case 0x12: set_mnemonic(i, "COP2"); type=NI; |
| 6778 | op2=(source[i]>>21)&0x1f; |
| 6779 | //if (op2 & 0x10) |
| 6780 | if (source[i]&0x3f) { // use this hack to support old savestates with patched gte insns |
| 6781 | if (gte_handlers[source[i]&0x3f]!=NULL) { |
| 6782 | #ifdef DISASM |
| 6783 | if (gte_regnames[source[i]&0x3f]!=NULL) |
| 6784 | strcpy(insn[i],gte_regnames[source[i]&0x3f]); |
| 6785 | else |
| 6786 | snprintf(insn[i], sizeof(insn[i]), "COP2 %x", source[i]&0x3f); |
| 6787 | #endif |
| 6788 | type=C2OP; |
| 6789 | } |
| 6790 | } |
| 6791 | else switch(op2) |
| 6792 | { |
| 6793 | case 0x00: set_mnemonic(i, "MFC2"); type=COP2; break; |
| 6794 | case 0x02: set_mnemonic(i, "CFC2"); type=COP2; break; |
| 6795 | case 0x04: set_mnemonic(i, "MTC2"); type=COP2; break; |
| 6796 | case 0x06: set_mnemonic(i, "CTC2"); type=COP2; break; |
| 6797 | } |
| 6798 | break; |
| 6799 | case 0x32: set_mnemonic(i, "LWC2"); type=C2LS; break; |
| 6800 | case 0x3A: set_mnemonic(i, "SWC2"); type=C2LS; break; |
| 6801 | case 0x3B: set_mnemonic(i, "HLECALL"); type=HLECALL; break; |
| 6802 | default: set_mnemonic(i, "???"); type=NI; |
| 6803 | SysPrintf("NI %08x @%08x (%08x)\n", source[i], start + i*4, start); |
| 6804 | break; |
| 6805 | } |
| 6806 | dops[i].itype=type; |
| 6807 | dops[i].opcode2=op2; |
| 6808 | /* Get registers/immediates */ |
| 6809 | dops[i].use_lt1=0; |
| 6810 | gte_rs[i]=gte_rt[i]=0; |
| 6811 | switch(type) { |
| 6812 | case LOAD: |
| 6813 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6814 | dops[i].rs2=0; |
| 6815 | dops[i].rt1=(source[i]>>16)&0x1f; |
| 6816 | dops[i].rt2=0; |
| 6817 | imm[i]=(short)source[i]; |
| 6818 | break; |
| 6819 | case STORE: |
| 6820 | case STORELR: |
| 6821 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6822 | dops[i].rs2=(source[i]>>16)&0x1f; |
| 6823 | dops[i].rt1=0; |
| 6824 | dops[i].rt2=0; |
| 6825 | imm[i]=(short)source[i]; |
| 6826 | break; |
| 6827 | case LOADLR: |
| 6828 | // LWL/LWR only load part of the register, |
| 6829 | // therefore the target register must be treated as a source too |
| 6830 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6831 | dops[i].rs2=(source[i]>>16)&0x1f; |
| 6832 | dops[i].rt1=(source[i]>>16)&0x1f; |
| 6833 | dops[i].rt2=0; |
| 6834 | imm[i]=(short)source[i]; |
| 6835 | break; |
| 6836 | case IMM16: |
| 6837 | if (op==0x0f) dops[i].rs1=0; // LUI instruction has no source register |
| 6838 | else dops[i].rs1=(source[i]>>21)&0x1f; |
| 6839 | dops[i].rs2=0; |
| 6840 | dops[i].rt1=(source[i]>>16)&0x1f; |
| 6841 | dops[i].rt2=0; |
| 6842 | if(op>=0x0c&&op<=0x0e) { // ANDI/ORI/XORI |
| 6843 | imm[i]=(unsigned short)source[i]; |
| 6844 | }else{ |
| 6845 | imm[i]=(short)source[i]; |
| 6846 | } |
| 6847 | break; |
| 6848 | case UJUMP: |
| 6849 | dops[i].rs1=0; |
| 6850 | dops[i].rs2=0; |
| 6851 | dops[i].rt1=0; |
| 6852 | dops[i].rt2=0; |
| 6853 | // The JAL instruction writes to r31. |
| 6854 | if (op&1) { |
| 6855 | dops[i].rt1=31; |
| 6856 | } |
| 6857 | dops[i].rs2=CCREG; |
| 6858 | break; |
| 6859 | case RJUMP: |
| 6860 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6861 | dops[i].rs2=0; |
| 6862 | dops[i].rt1=0; |
| 6863 | dops[i].rt2=0; |
| 6864 | // The JALR instruction writes to rd. |
| 6865 | if (op2&1) { |
| 6866 | dops[i].rt1=(source[i]>>11)&0x1f; |
| 6867 | } |
| 6868 | dops[i].rs2=CCREG; |
| 6869 | break; |
| 6870 | case CJUMP: |
| 6871 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6872 | dops[i].rs2=(source[i]>>16)&0x1f; |
| 6873 | dops[i].rt1=0; |
| 6874 | dops[i].rt2=0; |
| 6875 | if(op&2) { // BGTZ/BLEZ |
| 6876 | dops[i].rs2=0; |
| 6877 | } |
| 6878 | break; |
| 6879 | case SJUMP: |
| 6880 | dops[i].rs1=(source[i]>>21)&0x1f; |
| 6881 | dops[i].rs2=CCREG; |
| 6882 | dops[i].rt1=0; |
| 6883 | dops[i].rt2=0; |
| 6884 | if(op2&0x10) { // BxxAL |
| 6885 | dops[i].rt1=31; |
| 6886 | // NOTE: If the branch is not taken, r31 is still overwritten |
| 6887 | } |
| 6888 | break; |
| 6889 | case ALU: |
| 6890 | dops[i].rs1=(source[i]>>21)&0x1f; // source |
| 6891 | dops[i].rs2=(source[i]>>16)&0x1f; // subtract amount |
| 6892 | dops[i].rt1=(source[i]>>11)&0x1f; // destination |
| 6893 | dops[i].rt2=0; |
| 6894 | break; |
| 6895 | case MULTDIV: |
| 6896 | dops[i].rs1=(source[i]>>21)&0x1f; // source |
| 6897 | dops[i].rs2=(source[i]>>16)&0x1f; // divisor |
| 6898 | dops[i].rt1=HIREG; |
| 6899 | dops[i].rt2=LOREG; |
| 6900 | break; |
| 6901 | case MOV: |
| 6902 | dops[i].rs1=0; |
| 6903 | dops[i].rs2=0; |
| 6904 | dops[i].rt1=0; |
| 6905 | dops[i].rt2=0; |
| 6906 | if(op2==0x10) dops[i].rs1=HIREG; // MFHI |
| 6907 | if(op2==0x11) dops[i].rt1=HIREG; // MTHI |
| 6908 | if(op2==0x12) dops[i].rs1=LOREG; // MFLO |
| 6909 | if(op2==0x13) dops[i].rt1=LOREG; // MTLO |
| 6910 | if((op2&0x1d)==0x10) dops[i].rt1=(source[i]>>11)&0x1f; // MFxx |
| 6911 | if((op2&0x1d)==0x11) dops[i].rs1=(source[i]>>21)&0x1f; // MTxx |
| 6912 | break; |
| 6913 | case SHIFT: |
| 6914 | dops[i].rs1=(source[i]>>16)&0x1f; // target of shift |
| 6915 | dops[i].rs2=(source[i]>>21)&0x1f; // shift amount |
| 6916 | dops[i].rt1=(source[i]>>11)&0x1f; // destination |
| 6917 | dops[i].rt2=0; |
| 6918 | break; |
| 6919 | case SHIFTIMM: |
| 6920 | dops[i].rs1=(source[i]>>16)&0x1f; |
| 6921 | dops[i].rs2=0; |
| 6922 | dops[i].rt1=(source[i]>>11)&0x1f; |
| 6923 | dops[i].rt2=0; |
| 6924 | imm[i]=(source[i]>>6)&0x1f; |
| 6925 | // DSxx32 instructions |
| 6926 | if(op2>=0x3c) imm[i]|=0x20; |
| 6927 | break; |
| 6928 | case COP0: |
| 6929 | dops[i].rs1=0; |
| 6930 | dops[i].rs2=0; |
| 6931 | dops[i].rt1=0; |
| 6932 | dops[i].rt2=0; |
| 6933 | if(op2==0||op2==2) dops[i].rt1=(source[i]>>16)&0x1F; // MFC0/CFC0 |
| 6934 | if(op2==4||op2==6) dops[i].rs1=(source[i]>>16)&0x1F; // MTC0/CTC0 |
| 6935 | if(op2==4&&((source[i]>>11)&0x1f)==12) dops[i].rt2=CSREG; // Status |
| 6936 | if(op2==16) if((source[i]&0x3f)==0x18) dops[i].rs2=CCREG; // ERET |
| 6937 | break; |
| 6938 | case COP1: |
| 6939 | dops[i].rs1=0; |
| 6940 | dops[i].rs2=0; |
| 6941 | dops[i].rt1=0; |
| 6942 | dops[i].rt2=0; |
| 6943 | if(op2<3) dops[i].rt1=(source[i]>>16)&0x1F; // MFC1/DMFC1/CFC1 |
| 6944 | if(op2>3) dops[i].rs1=(source[i]>>16)&0x1F; // MTC1/DMTC1/CTC1 |
| 6945 | dops[i].rs2=CSREG; |
| 6946 | break; |
| 6947 | case COP2: |
| 6948 | dops[i].rs1=0; |
| 6949 | dops[i].rs2=0; |
| 6950 | dops[i].rt1=0; |
| 6951 | dops[i].rt2=0; |
| 6952 | if(op2<3) dops[i].rt1=(source[i]>>16)&0x1F; // MFC2/CFC2 |
| 6953 | if(op2>3) dops[i].rs1=(source[i]>>16)&0x1F; // MTC2/CTC2 |
| 6954 | dops[i].rs2=CSREG; |
| 6955 | int gr=(source[i]>>11)&0x1F; |
| 6956 | switch(op2) |
| 6957 | { |
| 6958 | case 0x00: gte_rs[i]=1ll<<gr; break; // MFC2 |
| 6959 | case 0x04: gte_rt[i]=1ll<<gr; break; // MTC2 |
| 6960 | case 0x02: gte_rs[i]=1ll<<(gr+32); break; // CFC2 |
| 6961 | case 0x06: gte_rt[i]=1ll<<(gr+32); break; // CTC2 |
| 6962 | } |
| 6963 | break; |
| 6964 | case C1LS: |
| 6965 | dops[i].rs1=(source[i]>>21)&0x1F; |
| 6966 | dops[i].rs2=CSREG; |
| 6967 | dops[i].rt1=0; |
| 6968 | dops[i].rt2=0; |
| 6969 | imm[i]=(short)source[i]; |
| 6970 | break; |
| 6971 | case C2LS: |
| 6972 | dops[i].rs1=(source[i]>>21)&0x1F; |
| 6973 | dops[i].rs2=0; |
| 6974 | dops[i].rt1=0; |
| 6975 | dops[i].rt2=0; |
| 6976 | imm[i]=(short)source[i]; |
| 6977 | if(op==0x32) gte_rt[i]=1ll<<((source[i]>>16)&0x1F); // LWC2 |
| 6978 | else gte_rs[i]=1ll<<((source[i]>>16)&0x1F); // SWC2 |
| 6979 | break; |
| 6980 | case C2OP: |
| 6981 | dops[i].rs1=0; |
| 6982 | dops[i].rs2=0; |
| 6983 | dops[i].rt1=0; |
| 6984 | dops[i].rt2=0; |
| 6985 | gte_rs[i]=gte_reg_reads[source[i]&0x3f]; |
| 6986 | gte_rt[i]=gte_reg_writes[source[i]&0x3f]; |
| 6987 | gte_rt[i]|=1ll<<63; // every op changes flags |
| 6988 | if((source[i]&0x3f)==GTE_MVMVA) { |
| 6989 | int v = (source[i] >> 15) & 3; |
| 6990 | gte_rs[i]&=~0xe3fll; |
| 6991 | if(v==3) gte_rs[i]|=0xe00ll; |
| 6992 | else gte_rs[i]|=3ll<<(v*2); |
| 6993 | } |
| 6994 | break; |
| 6995 | case SYSCALL: |
| 6996 | case HLECALL: |
| 6997 | case INTCALL: |
| 6998 | dops[i].rs1=CCREG; |
| 6999 | dops[i].rs2=0; |
| 7000 | dops[i].rt1=0; |
| 7001 | dops[i].rt2=0; |
| 7002 | break; |
| 7003 | default: |
| 7004 | dops[i].rs1=0; |
| 7005 | dops[i].rs2=0; |
| 7006 | dops[i].rt1=0; |
| 7007 | dops[i].rt2=0; |
| 7008 | } |
| 7009 | /* Calculate branch target addresses */ |
| 7010 | if(type==UJUMP) |
| 7011 | ba[i]=((start+i*4+4)&0xF0000000)|(((unsigned int)source[i]<<6)>>4); |
| 7012 | else if(type==CJUMP&&dops[i].rs1==dops[i].rs2&&(op&1)) |
| 7013 | ba[i]=start+i*4+8; // Ignore never taken branch |
| 7014 | else if(type==SJUMP&&dops[i].rs1==0&&!(op2&1)) |
| 7015 | ba[i]=start+i*4+8; // Ignore never taken branch |
| 7016 | else if(type==CJUMP||type==SJUMP) |
| 7017 | ba[i]=start+i*4+4+((signed int)((unsigned int)source[i]<<16)>>14); |
| 7018 | else ba[i]=-1; |
| 7019 | |
| 7020 | /* simplify always (not)taken branches */ |
| 7021 | if (type == CJUMP && dops[i].rs1 == dops[i].rs2) { |
| 7022 | dops[i].rs1 = dops[i].rs2 = 0; |
| 7023 | if (!(op & 1)) { |
| 7024 | dops[i].itype = type = UJUMP; |
| 7025 | dops[i].rs2 = CCREG; |
| 7026 | } |
| 7027 | } |
| 7028 | else if (type == SJUMP && dops[i].rs1 == 0 && (op2 & 1)) |
| 7029 | dops[i].itype = type = UJUMP; |
| 7030 | |
| 7031 | dops[i].is_jump = (dops[i].itype == RJUMP || dops[i].itype == UJUMP || dops[i].itype == CJUMP || dops[i].itype == SJUMP); |
| 7032 | dops[i].is_ujump = (dops[i].itype == RJUMP || dops[i].itype == UJUMP); // || (source[i] >> 16) == 0x1000 // beq r0,r0 |
| 7033 | dops[i].is_load = (dops[i].itype == LOAD || dops[i].itype == LOADLR || op == 0x32); // LWC2 |
| 7034 | dops[i].is_store = (dops[i].itype == STORE || dops[i].itype == STORELR || op == 0x3a); // SWC2 |
| 7035 | |
| 7036 | /* messy cases to just pass over to the interpreter */ |
| 7037 | if (i > 0 && dops[i-1].is_jump) { |
| 7038 | int do_in_intrp=0; |
| 7039 | // branch in delay slot? |
| 7040 | if (dops[i].is_jump) { |
| 7041 | // don't handle first branch and call interpreter if it's hit |
| 7042 | SysPrintf("branch in delay slot @%08x (%08x)\n", start + i*4, start); |
| 7043 | do_in_intrp=1; |
| 7044 | } |
| 7045 | // basic load delay detection |
| 7046 | else if((type==LOAD||type==LOADLR||type==COP0||type==COP2||type==C2LS)&&dops[i].rt1!=0) { |
| 7047 | int t=(ba[i-1]-start)/4; |
| 7048 | if(0 <= t && t < i &&(dops[i].rt1==dops[t].rs1||dops[i].rt1==dops[t].rs2)&&dops[t].itype!=CJUMP&&dops[t].itype!=SJUMP) { |
| 7049 | // jump target wants DS result - potential load delay effect |
| 7050 | SysPrintf("load delay @%08x (%08x)\n", start + i*4, start); |
| 7051 | do_in_intrp=1; |
| 7052 | dops[t+1].bt=1; // expected return from interpreter |
| 7053 | } |
| 7054 | else if(i>=2&&dops[i-2].rt1==2&&dops[i].rt1==2&&dops[i].rs1!=2&&dops[i].rs2!=2&&dops[i-1].rs1!=2&&dops[i-1].rs2!=2&& |
| 7055 | !(i>=3&&dops[i-3].is_jump)) { |
| 7056 | // v0 overwrite like this is a sign of trouble, bail out |
| 7057 | SysPrintf("v0 overwrite @%08x (%08x)\n", start + i*4, start); |
| 7058 | do_in_intrp=1; |
| 7059 | } |
| 7060 | } |
| 7061 | if (do_in_intrp) { |
| 7062 | memset(&dops[i-1], 0, sizeof(dops[i-1])); |
| 7063 | dops[i-1].itype = INTCALL; |
| 7064 | dops[i-1].rs1 = CCREG; |
| 7065 | ba[i-1] = -1; |
| 7066 | done = 2; |
| 7067 | i--; // don't compile the DS |
| 7068 | } |
| 7069 | } |
| 7070 | |
| 7071 | /* Is this the end of the block? */ |
| 7072 | if (i > 0 && dops[i-1].is_ujump) { |
| 7073 | if (dops[i-1].rt1 == 0) { // not jal |
| 7074 | int found_bbranch = 0, t = (ba[i-1] - start) / 4; |
| 7075 | if ((u_int)(t - i) < 64 && start + (t+64)*4 < pagelimit) { |
| 7076 | // scan for a branch back to i+1 |
| 7077 | for (j = t; j < t + 64; j++) { |
| 7078 | int tmpop = source[j] >> 26; |
| 7079 | if (tmpop == 1 || ((tmpop & ~3) == 4)) { |
| 7080 | int t2 = j + 1 + (int)(signed short)source[j]; |
| 7081 | if (t2 == i + 1) { |
| 7082 | //printf("blk expand %08x<-%08x\n", start + (i+1)*4, start + j*4); |
| 7083 | found_bbranch = 1; |
| 7084 | break; |
| 7085 | } |
| 7086 | } |
| 7087 | } |
| 7088 | } |
| 7089 | if (!found_bbranch) |
| 7090 | done = 2; |
| 7091 | } |
| 7092 | else { |
| 7093 | if(stop_after_jal) done=1; |
| 7094 | // Stop on BREAK |
| 7095 | if((source[i+1]&0xfc00003f)==0x0d) done=1; |
| 7096 | } |
| 7097 | // Don't recompile stuff that's already compiled |
| 7098 | if(check_addr(start+i*4+4)) done=1; |
| 7099 | // Don't get too close to the limit |
| 7100 | if(i>MAXBLOCK/2) done=1; |
| 7101 | } |
| 7102 | if (dops[i].itype == SYSCALL || dops[i].itype == HLECALL || dops[i].itype == INTCALL) |
| 7103 | done = stop_after_jal ? 1 : 2; |
| 7104 | if (done == 2) { |
| 7105 | // Does the block continue due to a branch? |
| 7106 | for(j=i-1;j>=0;j--) |
| 7107 | { |
| 7108 | if(ba[j]==start+i*4) done=j=0; // Branch into delay slot |
| 7109 | if(ba[j]==start+i*4+4) done=j=0; |
| 7110 | if(ba[j]==start+i*4+8) done=j=0; |
| 7111 | } |
| 7112 | } |
| 7113 | //assert(i<MAXBLOCK-1); |
| 7114 | if(start+i*4==pagelimit-4) done=1; |
| 7115 | assert(start+i*4<pagelimit); |
| 7116 | if (i==MAXBLOCK-1) done=1; |
| 7117 | // Stop if we're compiling junk |
| 7118 | if(dops[i].itype == NI && (++ni_count > 8 || dops[i].opcode == 0x11)) { |
| 7119 | done=stop_after_jal=1; |
| 7120 | SysPrintf("Disabled speculative precompilation\n"); |
| 7121 | } |
| 7122 | } |
| 7123 | slen=i; |
| 7124 | if (dops[i-1].is_jump) { |
| 7125 | if(start+i*4==pagelimit) { |
| 7126 | dops[i-1].itype=SPAN; |
| 7127 | } |
| 7128 | } |
| 7129 | assert(slen>0); |
| 7130 | } |
| 7131 | |
| 7132 | // Basic liveness analysis for MIPS registers |
| 7133 | static noinline void pass2_unneeded_regs(int istart,int iend,int r) |
| 7134 | { |
| 7135 | int i; |
| 7136 | uint64_t u,gte_u,b,gte_b; |
| 7137 | uint64_t temp_u,temp_gte_u=0; |
| 7138 | uint64_t gte_u_unknown=0; |
| 7139 | if (HACK_ENABLED(NDHACK_GTE_UNNEEDED)) |
| 7140 | gte_u_unknown=~0ll; |
| 7141 | if(iend==slen-1) { |
| 7142 | u=1; |
| 7143 | gte_u=gte_u_unknown; |
| 7144 | }else{ |
| 7145 | //u=unneeded_reg[iend+1]; |
| 7146 | u=1; |
| 7147 | gte_u=gte_unneeded[iend+1]; |
| 7148 | } |
| 7149 | |
| 7150 | for (i=iend;i>=istart;i--) |
| 7151 | { |
| 7152 | //printf("unneeded registers i=%d (%d,%d) r=%d\n",i,istart,iend,r); |
| 7153 | if(dops[i].is_jump) |
| 7154 | { |
| 7155 | // If subroutine call, flag return address as a possible branch target |
| 7156 | if(dops[i].rt1==31 && i<slen-2) dops[i+2].bt=1; |
| 7157 | |
| 7158 | if(ba[i]<start || ba[i]>=(start+slen*4)) |
| 7159 | { |
| 7160 | // Branch out of this block, flush all regs |
| 7161 | u=1; |
| 7162 | gte_u=gte_u_unknown; |
| 7163 | branch_unneeded_reg[i]=u; |
| 7164 | // Merge in delay slot |
| 7165 | u|=(1LL<<dops[i+1].rt1)|(1LL<<dops[i+1].rt2); |
| 7166 | u&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 7167 | u|=1; |
| 7168 | gte_u|=gte_rt[i+1]; |
| 7169 | gte_u&=~gte_rs[i+1]; |
| 7170 | } |
| 7171 | else |
| 7172 | { |
| 7173 | // Internal branch, flag target |
| 7174 | dops[(ba[i]-start)>>2].bt=1; |
| 7175 | if(ba[i]<=start+i*4) { |
| 7176 | // Backward branch |
| 7177 | if(dops[i].is_ujump) |
| 7178 | { |
| 7179 | // Unconditional branch |
| 7180 | temp_u=1; |
| 7181 | temp_gte_u=0; |
| 7182 | } else { |
| 7183 | // Conditional branch (not taken case) |
| 7184 | temp_u=unneeded_reg[i+2]; |
| 7185 | temp_gte_u&=gte_unneeded[i+2]; |
| 7186 | } |
| 7187 | // Merge in delay slot |
| 7188 | temp_u|=(1LL<<dops[i+1].rt1)|(1LL<<dops[i+1].rt2); |
| 7189 | temp_u&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 7190 | temp_u|=1; |
| 7191 | temp_gte_u|=gte_rt[i+1]; |
| 7192 | temp_gte_u&=~gte_rs[i+1]; |
| 7193 | temp_u|=(1LL<<dops[i].rt1)|(1LL<<dops[i].rt2); |
| 7194 | temp_u&=~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7195 | temp_u|=1; |
| 7196 | temp_gte_u|=gte_rt[i]; |
| 7197 | temp_gte_u&=~gte_rs[i]; |
| 7198 | unneeded_reg[i]=temp_u; |
| 7199 | gte_unneeded[i]=temp_gte_u; |
| 7200 | // Only go three levels deep. This recursion can take an |
| 7201 | // excessive amount of time if there are a lot of nested loops. |
| 7202 | if(r<2) { |
| 7203 | pass2_unneeded_regs((ba[i]-start)>>2,i-1,r+1); |
| 7204 | }else{ |
| 7205 | unneeded_reg[(ba[i]-start)>>2]=1; |
| 7206 | gte_unneeded[(ba[i]-start)>>2]=gte_u_unknown; |
| 7207 | } |
| 7208 | } /*else*/ if(1) { |
| 7209 | if (dops[i].is_ujump) |
| 7210 | { |
| 7211 | // Unconditional branch |
| 7212 | u=unneeded_reg[(ba[i]-start)>>2]; |
| 7213 | gte_u=gte_unneeded[(ba[i]-start)>>2]; |
| 7214 | branch_unneeded_reg[i]=u; |
| 7215 | // Merge in delay slot |
| 7216 | u|=(1LL<<dops[i+1].rt1)|(1LL<<dops[i+1].rt2); |
| 7217 | u&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 7218 | u|=1; |
| 7219 | gte_u|=gte_rt[i+1]; |
| 7220 | gte_u&=~gte_rs[i+1]; |
| 7221 | } else { |
| 7222 | // Conditional branch |
| 7223 | b=unneeded_reg[(ba[i]-start)>>2]; |
| 7224 | gte_b=gte_unneeded[(ba[i]-start)>>2]; |
| 7225 | branch_unneeded_reg[i]=b; |
| 7226 | // Branch delay slot |
| 7227 | b|=(1LL<<dops[i+1].rt1)|(1LL<<dops[i+1].rt2); |
| 7228 | b&=~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 7229 | b|=1; |
| 7230 | gte_b|=gte_rt[i+1]; |
| 7231 | gte_b&=~gte_rs[i+1]; |
| 7232 | u&=b; |
| 7233 | gte_u&=gte_b; |
| 7234 | if(i<slen-1) { |
| 7235 | branch_unneeded_reg[i]&=unneeded_reg[i+2]; |
| 7236 | } else { |
| 7237 | branch_unneeded_reg[i]=1; |
| 7238 | } |
| 7239 | } |
| 7240 | } |
| 7241 | } |
| 7242 | } |
| 7243 | else if(dops[i].itype==SYSCALL||dops[i].itype==HLECALL||dops[i].itype==INTCALL) |
| 7244 | { |
| 7245 | // SYSCALL instruction (software interrupt) |
| 7246 | u=1; |
| 7247 | } |
| 7248 | else if(dops[i].itype==COP0 && (source[i]&0x3f)==0x18) |
| 7249 | { |
| 7250 | // ERET instruction (return from interrupt) |
| 7251 | u=1; |
| 7252 | } |
| 7253 | //u=1; // DEBUG |
| 7254 | // Written registers are unneeded |
| 7255 | u|=1LL<<dops[i].rt1; |
| 7256 | u|=1LL<<dops[i].rt2; |
| 7257 | gte_u|=gte_rt[i]; |
| 7258 | // Accessed registers are needed |
| 7259 | u&=~(1LL<<dops[i].rs1); |
| 7260 | u&=~(1LL<<dops[i].rs2); |
| 7261 | gte_u&=~gte_rs[i]; |
| 7262 | if(gte_rs[i]&&dops[i].rt1&&(unneeded_reg[i+1]&(1ll<<dops[i].rt1))) |
| 7263 | gte_u|=gte_rs[i]>e_unneeded[i+1]; // MFC2/CFC2 to dead register, unneeded |
| 7264 | // Source-target dependencies |
| 7265 | // R0 is always unneeded |
| 7266 | u|=1; |
| 7267 | // Save it |
| 7268 | unneeded_reg[i]=u; |
| 7269 | gte_unneeded[i]=gte_u; |
| 7270 | /* |
| 7271 | printf("ur (%d,%d) %x: ",istart,iend,start+i*4); |
| 7272 | printf("U:"); |
| 7273 | int r; |
| 7274 | for(r=1;r<=CCREG;r++) { |
| 7275 | if((unneeded_reg[i]>>r)&1) { |
| 7276 | if(r==HIREG) printf(" HI"); |
| 7277 | else if(r==LOREG) printf(" LO"); |
| 7278 | else printf(" r%d",r); |
| 7279 | } |
| 7280 | } |
| 7281 | printf("\n"); |
| 7282 | */ |
| 7283 | } |
| 7284 | } |
| 7285 | |
| 7286 | static noinline void pass3_register_alloc(u_int addr) |
| 7287 | { |
| 7288 | struct regstat current; // Current register allocations/status |
| 7289 | clear_all_regs(current.regmap_entry); |
| 7290 | clear_all_regs(current.regmap); |
| 7291 | current.wasdirty = current.dirty = 0; |
| 7292 | current.u = unneeded_reg[0]; |
| 7293 | alloc_reg(¤t, 0, CCREG); |
| 7294 | dirty_reg(¤t, CCREG); |
| 7295 | current.wasconst = 0; |
| 7296 | current.isconst = 0; |
| 7297 | current.loadedconst = 0; |
| 7298 | current.waswritten = 0; |
| 7299 | int ds=0; |
| 7300 | int cc=0; |
| 7301 | int hr; |
| 7302 | int i, j; |
| 7303 | |
| 7304 | if (addr & 1) { |
| 7305 | // First instruction is delay slot |
| 7306 | cc=-1; |
| 7307 | dops[1].bt=1; |
| 7308 | ds=1; |
| 7309 | unneeded_reg[0]=1; |
| 7310 | current.regmap[HOST_BTREG]=BTREG; |
| 7311 | } |
| 7312 | |
| 7313 | for(i=0;i<slen;i++) |
| 7314 | { |
| 7315 | if(dops[i].bt) |
| 7316 | { |
| 7317 | for(hr=0;hr<HOST_REGS;hr++) |
| 7318 | { |
| 7319 | // Is this really necessary? |
| 7320 | if(current.regmap[hr]==0) current.regmap[hr]=-1; |
| 7321 | } |
| 7322 | current.isconst=0; |
| 7323 | current.waswritten=0; |
| 7324 | } |
| 7325 | |
| 7326 | memcpy(regmap_pre[i],current.regmap,sizeof(current.regmap)); |
| 7327 | regs[i].wasconst=current.isconst; |
| 7328 | regs[i].wasdirty=current.dirty; |
| 7329 | regs[i].dirty=0; |
| 7330 | regs[i].u=0; |
| 7331 | regs[i].isconst=0; |
| 7332 | regs[i].loadedconst=0; |
| 7333 | if (!dops[i].is_jump) { |
| 7334 | if(i+1<slen) { |
| 7335 | current.u=unneeded_reg[i+1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7336 | current.u|=1; |
| 7337 | } else { |
| 7338 | current.u=1; |
| 7339 | } |
| 7340 | } else { |
| 7341 | if(i+1<slen) { |
| 7342 | current.u=branch_unneeded_reg[i]&~((1LL<<dops[i+1].rs1)|(1LL<<dops[i+1].rs2)); |
| 7343 | current.u&=~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7344 | current.u|=1; |
| 7345 | } else { |
| 7346 | SysPrintf("oops, branch at end of block with no delay slot @%08x\n", start + i*4); |
| 7347 | abort(); |
| 7348 | } |
| 7349 | } |
| 7350 | dops[i].is_ds=ds; |
| 7351 | if(ds) { |
| 7352 | ds=0; // Skip delay slot, already allocated as part of branch |
| 7353 | // ...but we need to alloc it in case something jumps here |
| 7354 | if(i+1<slen) { |
| 7355 | current.u=branch_unneeded_reg[i-1]&unneeded_reg[i+1]; |
| 7356 | }else{ |
| 7357 | current.u=branch_unneeded_reg[i-1]; |
| 7358 | } |
| 7359 | current.u&=~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7360 | current.u|=1; |
| 7361 | struct regstat temp; |
| 7362 | memcpy(&temp,¤t,sizeof(current)); |
| 7363 | temp.wasdirty=temp.dirty; |
| 7364 | // TODO: Take into account unconditional branches, as below |
| 7365 | delayslot_alloc(&temp,i); |
| 7366 | memcpy(regs[i].regmap,temp.regmap,sizeof(temp.regmap)); |
| 7367 | regs[i].wasdirty=temp.wasdirty; |
| 7368 | regs[i].dirty=temp.dirty; |
| 7369 | regs[i].isconst=0; |
| 7370 | regs[i].wasconst=0; |
| 7371 | current.isconst=0; |
| 7372 | // Create entry (branch target) regmap |
| 7373 | for(hr=0;hr<HOST_REGS;hr++) |
| 7374 | { |
| 7375 | int r=temp.regmap[hr]; |
| 7376 | if(r>=0) { |
| 7377 | if(r!=regmap_pre[i][hr]) { |
| 7378 | regs[i].regmap_entry[hr]=-1; |
| 7379 | } |
| 7380 | else |
| 7381 | { |
| 7382 | assert(r < 64); |
| 7383 | if((current.u>>r)&1) { |
| 7384 | regs[i].regmap_entry[hr]=-1; |
| 7385 | regs[i].regmap[hr]=-1; |
| 7386 | //Don't clear regs in the delay slot as the branch might need them |
| 7387 | //current.regmap[hr]=-1; |
| 7388 | }else |
| 7389 | regs[i].regmap_entry[hr]=r; |
| 7390 | } |
| 7391 | } else { |
| 7392 | // First instruction expects CCREG to be allocated |
| 7393 | if(i==0&&hr==HOST_CCREG) |
| 7394 | regs[i].regmap_entry[hr]=CCREG; |
| 7395 | else |
| 7396 | regs[i].regmap_entry[hr]=-1; |
| 7397 | } |
| 7398 | } |
| 7399 | } |
| 7400 | else { // Not delay slot |
| 7401 | switch(dops[i].itype) { |
| 7402 | case UJUMP: |
| 7403 | //current.isconst=0; // DEBUG |
| 7404 | //current.wasconst=0; // DEBUG |
| 7405 | //regs[i].wasconst=0; // DEBUG |
| 7406 | clear_const(¤t,dops[i].rt1); |
| 7407 | alloc_cc(¤t,i); |
| 7408 | dirty_reg(¤t,CCREG); |
| 7409 | if (dops[i].rt1==31) { |
| 7410 | alloc_reg(¤t,i,31); |
| 7411 | dirty_reg(¤t,31); |
| 7412 | //assert(dops[i+1].rs1!=31&&dops[i+1].rs2!=31); |
| 7413 | //assert(dops[i+1].rt1!=dops[i].rt1); |
| 7414 | #ifdef REG_PREFETCH |
| 7415 | alloc_reg(¤t,i,PTEMP); |
| 7416 | #endif |
| 7417 | } |
| 7418 | dops[i].ooo=1; |
| 7419 | delayslot_alloc(¤t,i+1); |
| 7420 | //current.isconst=0; // DEBUG |
| 7421 | ds=1; |
| 7422 | //printf("i=%d, isconst=%x\n",i,current.isconst); |
| 7423 | break; |
| 7424 | case RJUMP: |
| 7425 | //current.isconst=0; |
| 7426 | //current.wasconst=0; |
| 7427 | //regs[i].wasconst=0; |
| 7428 | clear_const(¤t,dops[i].rs1); |
| 7429 | clear_const(¤t,dops[i].rt1); |
| 7430 | alloc_cc(¤t,i); |
| 7431 | dirty_reg(¤t,CCREG); |
| 7432 | if (!ds_writes_rjump_rs(i)) { |
| 7433 | alloc_reg(¤t,i,dops[i].rs1); |
| 7434 | if (dops[i].rt1!=0) { |
| 7435 | alloc_reg(¤t,i,dops[i].rt1); |
| 7436 | dirty_reg(¤t,dops[i].rt1); |
| 7437 | assert(dops[i+1].rs1!=dops[i].rt1&&dops[i+1].rs2!=dops[i].rt1); |
| 7438 | assert(dops[i+1].rt1!=dops[i].rt1); |
| 7439 | #ifdef REG_PREFETCH |
| 7440 | alloc_reg(¤t,i,PTEMP); |
| 7441 | #endif |
| 7442 | } |
| 7443 | #ifdef USE_MINI_HT |
| 7444 | if(dops[i].rs1==31) { // JALR |
| 7445 | alloc_reg(¤t,i,RHASH); |
| 7446 | alloc_reg(¤t,i,RHTBL); |
| 7447 | } |
| 7448 | #endif |
| 7449 | delayslot_alloc(¤t,i+1); |
| 7450 | } else { |
| 7451 | // The delay slot overwrites our source register, |
| 7452 | // allocate a temporary register to hold the old value. |
| 7453 | current.isconst=0; |
| 7454 | current.wasconst=0; |
| 7455 | regs[i].wasconst=0; |
| 7456 | delayslot_alloc(¤t,i+1); |
| 7457 | current.isconst=0; |
| 7458 | alloc_reg(¤t,i,RTEMP); |
| 7459 | } |
| 7460 | //current.isconst=0; // DEBUG |
| 7461 | dops[i].ooo=1; |
| 7462 | ds=1; |
| 7463 | break; |
| 7464 | case CJUMP: |
| 7465 | //current.isconst=0; |
| 7466 | //current.wasconst=0; |
| 7467 | //regs[i].wasconst=0; |
| 7468 | clear_const(¤t,dops[i].rs1); |
| 7469 | clear_const(¤t,dops[i].rs2); |
| 7470 | if((dops[i].opcode&0x3E)==4) // BEQ/BNE |
| 7471 | { |
| 7472 | alloc_cc(¤t,i); |
| 7473 | dirty_reg(¤t,CCREG); |
| 7474 | if(dops[i].rs1) alloc_reg(¤t,i,dops[i].rs1); |
| 7475 | if(dops[i].rs2) alloc_reg(¤t,i,dops[i].rs2); |
| 7476 | if((dops[i].rs1&&(dops[i].rs1==dops[i+1].rt1||dops[i].rs1==dops[i+1].rt2))|| |
| 7477 | (dops[i].rs2&&(dops[i].rs2==dops[i+1].rt1||dops[i].rs2==dops[i+1].rt2))) { |
| 7478 | // The delay slot overwrites one of our conditions. |
| 7479 | // Allocate the branch condition registers instead. |
| 7480 | current.isconst=0; |
| 7481 | current.wasconst=0; |
| 7482 | regs[i].wasconst=0; |
| 7483 | if(dops[i].rs1) alloc_reg(¤t,i,dops[i].rs1); |
| 7484 | if(dops[i].rs2) alloc_reg(¤t,i,dops[i].rs2); |
| 7485 | } |
| 7486 | else |
| 7487 | { |
| 7488 | dops[i].ooo=1; |
| 7489 | delayslot_alloc(¤t,i+1); |
| 7490 | } |
| 7491 | } |
| 7492 | else |
| 7493 | if((dops[i].opcode&0x3E)==6) // BLEZ/BGTZ |
| 7494 | { |
| 7495 | alloc_cc(¤t,i); |
| 7496 | dirty_reg(¤t,CCREG); |
| 7497 | alloc_reg(¤t,i,dops[i].rs1); |
| 7498 | if(dops[i].rs1&&(dops[i].rs1==dops[i+1].rt1||dops[i].rs1==dops[i+1].rt2)) { |
| 7499 | // The delay slot overwrites one of our conditions. |
| 7500 | // Allocate the branch condition registers instead. |
| 7501 | current.isconst=0; |
| 7502 | current.wasconst=0; |
| 7503 | regs[i].wasconst=0; |
| 7504 | if(dops[i].rs1) alloc_reg(¤t,i,dops[i].rs1); |
| 7505 | } |
| 7506 | else |
| 7507 | { |
| 7508 | dops[i].ooo=1; |
| 7509 | delayslot_alloc(¤t,i+1); |
| 7510 | } |
| 7511 | } |
| 7512 | else |
| 7513 | // Don't alloc the delay slot yet because we might not execute it |
| 7514 | if((dops[i].opcode&0x3E)==0x14) // BEQL/BNEL |
| 7515 | { |
| 7516 | current.isconst=0; |
| 7517 | current.wasconst=0; |
| 7518 | regs[i].wasconst=0; |
| 7519 | alloc_cc(¤t,i); |
| 7520 | dirty_reg(¤t,CCREG); |
| 7521 | alloc_reg(¤t,i,dops[i].rs1); |
| 7522 | alloc_reg(¤t,i,dops[i].rs2); |
| 7523 | } |
| 7524 | else |
| 7525 | if((dops[i].opcode&0x3E)==0x16) // BLEZL/BGTZL |
| 7526 | { |
| 7527 | current.isconst=0; |
| 7528 | current.wasconst=0; |
| 7529 | regs[i].wasconst=0; |
| 7530 | alloc_cc(¤t,i); |
| 7531 | dirty_reg(¤t,CCREG); |
| 7532 | alloc_reg(¤t,i,dops[i].rs1); |
| 7533 | } |
| 7534 | ds=1; |
| 7535 | //current.isconst=0; |
| 7536 | break; |
| 7537 | case SJUMP: |
| 7538 | //current.isconst=0; |
| 7539 | //current.wasconst=0; |
| 7540 | //regs[i].wasconst=0; |
| 7541 | clear_const(¤t,dops[i].rs1); |
| 7542 | clear_const(¤t,dops[i].rt1); |
| 7543 | //if((dops[i].opcode2&0x1E)==0x0) // BLTZ/BGEZ |
| 7544 | if((dops[i].opcode2&0x0E)==0x0) // BLTZ/BGEZ |
| 7545 | { |
| 7546 | alloc_cc(¤t,i); |
| 7547 | dirty_reg(¤t,CCREG); |
| 7548 | alloc_reg(¤t,i,dops[i].rs1); |
| 7549 | if (dops[i].rt1==31) { // BLTZAL/BGEZAL |
| 7550 | alloc_reg(¤t,i,31); |
| 7551 | dirty_reg(¤t,31); |
| 7552 | //#ifdef REG_PREFETCH |
| 7553 | //alloc_reg(¤t,i,PTEMP); |
| 7554 | //#endif |
| 7555 | } |
| 7556 | if((dops[i].rs1&&(dops[i].rs1==dops[i+1].rt1||dops[i].rs1==dops[i+1].rt2)) // The delay slot overwrites the branch condition. |
| 7557 | ||(dops[i].rt1==31&&(dops[i+1].rs1==31||dops[i+1].rs2==31||dops[i+1].rt1==31||dops[i+1].rt2==31))) { // DS touches $ra |
| 7558 | // Allocate the branch condition registers instead. |
| 7559 | current.isconst=0; |
| 7560 | current.wasconst=0; |
| 7561 | regs[i].wasconst=0; |
| 7562 | if(dops[i].rs1) alloc_reg(¤t,i,dops[i].rs1); |
| 7563 | } |
| 7564 | else |
| 7565 | { |
| 7566 | dops[i].ooo=1; |
| 7567 | delayslot_alloc(¤t,i+1); |
| 7568 | } |
| 7569 | } |
| 7570 | else |
| 7571 | // Don't alloc the delay slot yet because we might not execute it |
| 7572 | if((dops[i].opcode2&0x1E)==0x2) // BLTZL/BGEZL |
| 7573 | { |
| 7574 | current.isconst=0; |
| 7575 | current.wasconst=0; |
| 7576 | regs[i].wasconst=0; |
| 7577 | alloc_cc(¤t,i); |
| 7578 | dirty_reg(¤t,CCREG); |
| 7579 | alloc_reg(¤t,i,dops[i].rs1); |
| 7580 | } |
| 7581 | ds=1; |
| 7582 | //current.isconst=0; |
| 7583 | break; |
| 7584 | case IMM16: |
| 7585 | imm16_alloc(¤t,i); |
| 7586 | break; |
| 7587 | case LOAD: |
| 7588 | case LOADLR: |
| 7589 | load_alloc(¤t,i); |
| 7590 | break; |
| 7591 | case STORE: |
| 7592 | case STORELR: |
| 7593 | store_alloc(¤t,i); |
| 7594 | break; |
| 7595 | case ALU: |
| 7596 | alu_alloc(¤t,i); |
| 7597 | break; |
| 7598 | case SHIFT: |
| 7599 | shift_alloc(¤t,i); |
| 7600 | break; |
| 7601 | case MULTDIV: |
| 7602 | multdiv_alloc(¤t,i); |
| 7603 | break; |
| 7604 | case SHIFTIMM: |
| 7605 | shiftimm_alloc(¤t,i); |
| 7606 | break; |
| 7607 | case MOV: |
| 7608 | mov_alloc(¤t,i); |
| 7609 | break; |
| 7610 | case COP0: |
| 7611 | cop0_alloc(¤t,i); |
| 7612 | break; |
| 7613 | case COP1: |
| 7614 | break; |
| 7615 | case COP2: |
| 7616 | cop2_alloc(¤t,i); |
| 7617 | break; |
| 7618 | case C1LS: |
| 7619 | c1ls_alloc(¤t,i); |
| 7620 | break; |
| 7621 | case C2LS: |
| 7622 | c2ls_alloc(¤t,i); |
| 7623 | break; |
| 7624 | case C2OP: |
| 7625 | c2op_alloc(¤t,i); |
| 7626 | break; |
| 7627 | case SYSCALL: |
| 7628 | case HLECALL: |
| 7629 | case INTCALL: |
| 7630 | syscall_alloc(¤t,i); |
| 7631 | break; |
| 7632 | case SPAN: |
| 7633 | pagespan_alloc(¤t,i); |
| 7634 | break; |
| 7635 | } |
| 7636 | |
| 7637 | // Create entry (branch target) regmap |
| 7638 | for(hr=0;hr<HOST_REGS;hr++) |
| 7639 | { |
| 7640 | int r,or; |
| 7641 | r=current.regmap[hr]; |
| 7642 | if(r>=0) { |
| 7643 | if(r!=regmap_pre[i][hr]) { |
| 7644 | // TODO: delay slot (?) |
| 7645 | or=get_reg(regmap_pre[i],r); // Get old mapping for this register |
| 7646 | if(or<0||r>=TEMPREG){ |
| 7647 | regs[i].regmap_entry[hr]=-1; |
| 7648 | } |
| 7649 | else |
| 7650 | { |
| 7651 | // Just move it to a different register |
| 7652 | regs[i].regmap_entry[hr]=r; |
| 7653 | // If it was dirty before, it's still dirty |
| 7654 | if((regs[i].wasdirty>>or)&1) dirty_reg(¤t,r); |
| 7655 | } |
| 7656 | } |
| 7657 | else |
| 7658 | { |
| 7659 | // Unneeded |
| 7660 | if(r==0){ |
| 7661 | regs[i].regmap_entry[hr]=0; |
| 7662 | } |
| 7663 | else |
| 7664 | { |
| 7665 | assert(r<64); |
| 7666 | if((current.u>>r)&1) { |
| 7667 | regs[i].regmap_entry[hr]=-1; |
| 7668 | //regs[i].regmap[hr]=-1; |
| 7669 | current.regmap[hr]=-1; |
| 7670 | }else |
| 7671 | regs[i].regmap_entry[hr]=r; |
| 7672 | } |
| 7673 | } |
| 7674 | } else { |
| 7675 | // Branches expect CCREG to be allocated at the target |
| 7676 | if(regmap_pre[i][hr]==CCREG) |
| 7677 | regs[i].regmap_entry[hr]=CCREG; |
| 7678 | else |
| 7679 | regs[i].regmap_entry[hr]=-1; |
| 7680 | } |
| 7681 | } |
| 7682 | memcpy(regs[i].regmap,current.regmap,sizeof(current.regmap)); |
| 7683 | } |
| 7684 | |
| 7685 | if(i>0&&(dops[i-1].itype==STORE||dops[i-1].itype==STORELR||(dops[i-1].itype==C2LS&&dops[i-1].opcode==0x3a))&&(u_int)imm[i-1]<0x800) |
| 7686 | current.waswritten|=1<<dops[i-1].rs1; |
| 7687 | current.waswritten&=~(1<<dops[i].rt1); |
| 7688 | current.waswritten&=~(1<<dops[i].rt2); |
| 7689 | if((dops[i].itype==STORE||dops[i].itype==STORELR||(dops[i].itype==C2LS&&dops[i].opcode==0x3a))&&(u_int)imm[i]>=0x800) |
| 7690 | current.waswritten&=~(1<<dops[i].rs1); |
| 7691 | |
| 7692 | /* Branch post-alloc */ |
| 7693 | if(i>0) |
| 7694 | { |
| 7695 | current.wasdirty=current.dirty; |
| 7696 | switch(dops[i-1].itype) { |
| 7697 | case UJUMP: |
| 7698 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7699 | branch_regs[i-1].isconst=0; |
| 7700 | branch_regs[i-1].wasconst=0; |
| 7701 | branch_regs[i-1].u=branch_unneeded_reg[i-1]&~((1LL<<dops[i-1].rs1)|(1LL<<dops[i-1].rs2)); |
| 7702 | alloc_cc(&branch_regs[i-1],i-1); |
| 7703 | dirty_reg(&branch_regs[i-1],CCREG); |
| 7704 | if(dops[i-1].rt1==31) { // JAL |
| 7705 | alloc_reg(&branch_regs[i-1],i-1,31); |
| 7706 | dirty_reg(&branch_regs[i-1],31); |
| 7707 | } |
| 7708 | memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap)); |
| 7709 | memcpy(constmap[i],constmap[i-1],sizeof(constmap[i])); |
| 7710 | break; |
| 7711 | case RJUMP: |
| 7712 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7713 | branch_regs[i-1].isconst=0; |
| 7714 | branch_regs[i-1].wasconst=0; |
| 7715 | branch_regs[i-1].u=branch_unneeded_reg[i-1]&~((1LL<<dops[i-1].rs1)|(1LL<<dops[i-1].rs2)); |
| 7716 | alloc_cc(&branch_regs[i-1],i-1); |
| 7717 | dirty_reg(&branch_regs[i-1],CCREG); |
| 7718 | alloc_reg(&branch_regs[i-1],i-1,dops[i-1].rs1); |
| 7719 | if(dops[i-1].rt1!=0) { // JALR |
| 7720 | alloc_reg(&branch_regs[i-1],i-1,dops[i-1].rt1); |
| 7721 | dirty_reg(&branch_regs[i-1],dops[i-1].rt1); |
| 7722 | } |
| 7723 | #ifdef USE_MINI_HT |
| 7724 | if(dops[i-1].rs1==31) { // JALR |
| 7725 | alloc_reg(&branch_regs[i-1],i-1,RHASH); |
| 7726 | alloc_reg(&branch_regs[i-1],i-1,RHTBL); |
| 7727 | } |
| 7728 | #endif |
| 7729 | memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap)); |
| 7730 | memcpy(constmap[i],constmap[i-1],sizeof(constmap[i])); |
| 7731 | break; |
| 7732 | case CJUMP: |
| 7733 | if((dops[i-1].opcode&0x3E)==4) // BEQ/BNE |
| 7734 | { |
| 7735 | alloc_cc(¤t,i-1); |
| 7736 | dirty_reg(¤t,CCREG); |
| 7737 | if((dops[i-1].rs1&&(dops[i-1].rs1==dops[i].rt1||dops[i-1].rs1==dops[i].rt2))|| |
| 7738 | (dops[i-1].rs2&&(dops[i-1].rs2==dops[i].rt1||dops[i-1].rs2==dops[i].rt2))) { |
| 7739 | // The delay slot overwrote one of our conditions |
| 7740 | // Delay slot goes after the test (in order) |
| 7741 | current.u=branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7742 | current.u|=1; |
| 7743 | delayslot_alloc(¤t,i); |
| 7744 | current.isconst=0; |
| 7745 | } |
| 7746 | else |
| 7747 | { |
| 7748 | current.u=branch_unneeded_reg[i-1]&~((1LL<<dops[i-1].rs1)|(1LL<<dops[i-1].rs2)); |
| 7749 | // Alloc the branch condition registers |
| 7750 | if(dops[i-1].rs1) alloc_reg(¤t,i-1,dops[i-1].rs1); |
| 7751 | if(dops[i-1].rs2) alloc_reg(¤t,i-1,dops[i-1].rs2); |
| 7752 | } |
| 7753 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7754 | branch_regs[i-1].isconst=0; |
| 7755 | branch_regs[i-1].wasconst=0; |
| 7756 | memcpy(&branch_regs[i-1].regmap_entry,¤t.regmap,sizeof(current.regmap)); |
| 7757 | memcpy(constmap[i],constmap[i-1],sizeof(constmap[i])); |
| 7758 | } |
| 7759 | else |
| 7760 | if((dops[i-1].opcode&0x3E)==6) // BLEZ/BGTZ |
| 7761 | { |
| 7762 | alloc_cc(¤t,i-1); |
| 7763 | dirty_reg(¤t,CCREG); |
| 7764 | if(dops[i-1].rs1==dops[i].rt1||dops[i-1].rs1==dops[i].rt2) { |
| 7765 | // The delay slot overwrote the branch condition |
| 7766 | // Delay slot goes after the test (in order) |
| 7767 | current.u=branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7768 | current.u|=1; |
| 7769 | delayslot_alloc(¤t,i); |
| 7770 | current.isconst=0; |
| 7771 | } |
| 7772 | else |
| 7773 | { |
| 7774 | current.u=branch_unneeded_reg[i-1]&~(1LL<<dops[i-1].rs1); |
| 7775 | // Alloc the branch condition register |
| 7776 | alloc_reg(¤t,i-1,dops[i-1].rs1); |
| 7777 | } |
| 7778 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7779 | branch_regs[i-1].isconst=0; |
| 7780 | branch_regs[i-1].wasconst=0; |
| 7781 | memcpy(&branch_regs[i-1].regmap_entry,¤t.regmap,sizeof(current.regmap)); |
| 7782 | memcpy(constmap[i],constmap[i-1],sizeof(constmap[i])); |
| 7783 | } |
| 7784 | else |
| 7785 | // Alloc the delay slot in case the branch is taken |
| 7786 | if((dops[i-1].opcode&0x3E)==0x14) // BEQL/BNEL |
| 7787 | { |
| 7788 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7789 | branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)|(1LL<<dops[i].rt1)|(1LL<<dops[i].rt2)))|1; |
| 7790 | alloc_cc(&branch_regs[i-1],i); |
| 7791 | dirty_reg(&branch_regs[i-1],CCREG); |
| 7792 | delayslot_alloc(&branch_regs[i-1],i); |
| 7793 | branch_regs[i-1].isconst=0; |
| 7794 | alloc_reg(¤t,i,CCREG); // Not taken path |
| 7795 | dirty_reg(¤t,CCREG); |
| 7796 | memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap)); |
| 7797 | } |
| 7798 | else |
| 7799 | if((dops[i-1].opcode&0x3E)==0x16) // BLEZL/BGTZL |
| 7800 | { |
| 7801 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7802 | branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)|(1LL<<dops[i].rt1)|(1LL<<dops[i].rt2)))|1; |
| 7803 | alloc_cc(&branch_regs[i-1],i); |
| 7804 | dirty_reg(&branch_regs[i-1],CCREG); |
| 7805 | delayslot_alloc(&branch_regs[i-1],i); |
| 7806 | branch_regs[i-1].isconst=0; |
| 7807 | alloc_reg(¤t,i,CCREG); // Not taken path |
| 7808 | dirty_reg(¤t,CCREG); |
| 7809 | memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap)); |
| 7810 | } |
| 7811 | break; |
| 7812 | case SJUMP: |
| 7813 | //if((dops[i-1].opcode2&0x1E)==0) // BLTZ/BGEZ |
| 7814 | if((dops[i-1].opcode2&0x0E)==0) // BLTZ/BGEZ |
| 7815 | { |
| 7816 | alloc_cc(¤t,i-1); |
| 7817 | dirty_reg(¤t,CCREG); |
| 7818 | if(dops[i-1].rs1==dops[i].rt1||dops[i-1].rs1==dops[i].rt2) { |
| 7819 | // The delay slot overwrote the branch condition |
| 7820 | // Delay slot goes after the test (in order) |
| 7821 | current.u=branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)); |
| 7822 | current.u|=1; |
| 7823 | delayslot_alloc(¤t,i); |
| 7824 | current.isconst=0; |
| 7825 | } |
| 7826 | else |
| 7827 | { |
| 7828 | current.u=branch_unneeded_reg[i-1]&~(1LL<<dops[i-1].rs1); |
| 7829 | // Alloc the branch condition register |
| 7830 | alloc_reg(¤t,i-1,dops[i-1].rs1); |
| 7831 | } |
| 7832 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7833 | branch_regs[i-1].isconst=0; |
| 7834 | branch_regs[i-1].wasconst=0; |
| 7835 | memcpy(&branch_regs[i-1].regmap_entry,¤t.regmap,sizeof(current.regmap)); |
| 7836 | memcpy(constmap[i],constmap[i-1],sizeof(constmap[i])); |
| 7837 | } |
| 7838 | else |
| 7839 | // Alloc the delay slot in case the branch is taken |
| 7840 | if((dops[i-1].opcode2&0x1E)==2) // BLTZL/BGEZL |
| 7841 | { |
| 7842 | memcpy(&branch_regs[i-1],¤t,sizeof(current)); |
| 7843 | branch_regs[i-1].u=(branch_unneeded_reg[i-1]&~((1LL<<dops[i].rs1)|(1LL<<dops[i].rs2)|(1LL<<dops[i].rt1)|(1LL<<dops[i].rt2)))|1; |
| 7844 | alloc_cc(&branch_regs[i-1],i); |
| 7845 | dirty_reg(&branch_regs[i-1],CCREG); |
| 7846 | delayslot_alloc(&branch_regs[i-1],i); |
| 7847 | branch_regs[i-1].isconst=0; |
| 7848 | alloc_reg(¤t,i,CCREG); // Not taken path |
| 7849 | dirty_reg(¤t,CCREG); |
| 7850 | memcpy(&branch_regs[i-1].regmap_entry,&branch_regs[i-1].regmap,sizeof(current.regmap)); |
| 7851 | } |
| 7852 | // FIXME: BLTZAL/BGEZAL |
| 7853 | if(dops[i-1].opcode2&0x10) { // BxxZAL |
| 7854 | alloc_reg(&branch_regs[i-1],i-1,31); |
| 7855 | dirty_reg(&branch_regs[i-1],31); |
| 7856 | } |
| 7857 | break; |
| 7858 | } |
| 7859 | |
| 7860 | if (dops[i-1].is_ujump) |
| 7861 | { |
| 7862 | if(dops[i-1].rt1==31) // JAL/JALR |
| 7863 | { |
| 7864 | // Subroutine call will return here, don't alloc any registers |
| 7865 | current.dirty=0; |
| 7866 | clear_all_regs(current.regmap); |
| 7867 | alloc_reg(¤t,i,CCREG); |
| 7868 | dirty_reg(¤t,CCREG); |
| 7869 | } |
| 7870 | else if(i+1<slen) |
| 7871 | { |
| 7872 | // Internal branch will jump here, match registers to caller |
| 7873 | current.dirty=0; |
| 7874 | clear_all_regs(current.regmap); |
| 7875 | alloc_reg(¤t,i,CCREG); |
| 7876 | dirty_reg(¤t,CCREG); |
| 7877 | for(j=i-1;j>=0;j--) |
| 7878 | { |
| 7879 | if(ba[j]==start+i*4+4) { |
| 7880 | memcpy(current.regmap,branch_regs[j].regmap,sizeof(current.regmap)); |
| 7881 | current.dirty=branch_regs[j].dirty; |
| 7882 | break; |
| 7883 | } |
| 7884 | } |
| 7885 | while(j>=0) { |
| 7886 | if(ba[j]==start+i*4+4) { |
| 7887 | for(hr=0;hr<HOST_REGS;hr++) { |
| 7888 | if(current.regmap[hr]!=branch_regs[j].regmap[hr]) { |
| 7889 | current.regmap[hr]=-1; |
| 7890 | } |
| 7891 | current.dirty&=branch_regs[j].dirty; |
| 7892 | } |
| 7893 | } |
| 7894 | j--; |
| 7895 | } |
| 7896 | } |
| 7897 | } |
| 7898 | } |
| 7899 | |
| 7900 | // Count cycles in between branches |
| 7901 | ccadj[i] = CLOCK_ADJUST(cc); |
| 7902 | if (i > 0 && (dops[i-1].is_jump || dops[i].itype == SYSCALL || dops[i].itype == HLECALL)) |
| 7903 | { |
| 7904 | cc=0; |
| 7905 | } |
| 7906 | #if !defined(DRC_DBG) |
| 7907 | else if(dops[i].itype==C2OP&>e_cycletab[source[i]&0x3f]>2) |
| 7908 | { |
| 7909 | // this should really be removed since the real stalls have been implemented, |
| 7910 | // but doing so causes sizeable perf regression against the older version |
| 7911 | u_int gtec = gte_cycletab[source[i] & 0x3f]; |
| 7912 | cc += HACK_ENABLED(NDHACK_NO_STALLS) ? gtec/2 : 2; |
| 7913 | } |
| 7914 | else if(i>1&&dops[i].itype==STORE&&dops[i-1].itype==STORE&&dops[i-2].itype==STORE&&!dops[i].bt) |
| 7915 | { |
| 7916 | cc+=4; |
| 7917 | } |
| 7918 | else if(dops[i].itype==C2LS) |
| 7919 | { |
| 7920 | // same as with C2OP |
| 7921 | cc += HACK_ENABLED(NDHACK_NO_STALLS) ? 4 : 2; |
| 7922 | } |
| 7923 | #endif |
| 7924 | else |
| 7925 | { |
| 7926 | cc++; |
| 7927 | } |
| 7928 | |
| 7929 | if(!dops[i].is_ds) { |
| 7930 | regs[i].dirty=current.dirty; |
| 7931 | regs[i].isconst=current.isconst; |
| 7932 | memcpy(constmap[i],current_constmap,sizeof(constmap[i])); |
| 7933 | } |
| 7934 | for(hr=0;hr<HOST_REGS;hr++) { |
| 7935 | if(hr!=EXCLUDE_REG&®s[i].regmap[hr]>=0) { |
| 7936 | if(regmap_pre[i][hr]!=regs[i].regmap[hr]) { |
| 7937 | regs[i].wasconst&=~(1<<hr); |
| 7938 | } |
| 7939 | } |
| 7940 | } |
| 7941 | if(current.regmap[HOST_BTREG]==BTREG) current.regmap[HOST_BTREG]=-1; |
| 7942 | regs[i].waswritten=current.waswritten; |
| 7943 | } |
| 7944 | } |
| 7945 | |
| 7946 | static noinline void pass4_cull_unused_regs(void) |
| 7947 | { |
| 7948 | u_int last_needed_regs[4] = {0,0,0,0}; |
| 7949 | u_int nr=0; |
| 7950 | int i; |
| 7951 | |
| 7952 | for (i=slen-1;i>=0;i--) |
| 7953 | { |
| 7954 | int hr; |
| 7955 | __builtin_prefetch(regs[i-2].regmap); |
| 7956 | if(dops[i].is_jump) |
| 7957 | { |
| 7958 | if(ba[i]<start || ba[i]>=(start+slen*4)) |
| 7959 | { |
| 7960 | // Branch out of this block, don't need anything |
| 7961 | nr=0; |
| 7962 | } |
| 7963 | else |
| 7964 | { |
| 7965 | // Internal branch |
| 7966 | // Need whatever matches the target |
| 7967 | nr=0; |
| 7968 | int t=(ba[i]-start)>>2; |
| 7969 | for(hr=0;hr<HOST_REGS;hr++) |
| 7970 | { |
| 7971 | if(regs[i].regmap_entry[hr]>=0) { |
| 7972 | if(regs[i].regmap_entry[hr]==regs[t].regmap_entry[hr]) nr|=1<<hr; |
| 7973 | } |
| 7974 | } |
| 7975 | } |
| 7976 | // Conditional branch may need registers for following instructions |
| 7977 | if (!dops[i].is_ujump) |
| 7978 | { |
| 7979 | if(i<slen-2) { |
| 7980 | nr |= last_needed_regs[(i+2) & 3]; |
| 7981 | for(hr=0;hr<HOST_REGS;hr++) |
| 7982 | { |
| 7983 | if(regmap_pre[i+2][hr]>=0&&get_reg(regs[i+2].regmap_entry,regmap_pre[i+2][hr])<0) nr&=~(1<<hr); |
| 7984 | //if((regmap_entry[i+2][hr])>=0) if(!((nr>>hr)&1)) printf("%x-bogus(%d=%d)\n",start+i*4,hr,regmap_entry[i+2][hr]); |
| 7985 | } |
| 7986 | } |
| 7987 | } |
| 7988 | // Don't need stuff which is overwritten |
| 7989 | //if(regs[i].regmap[hr]!=regmap_pre[i][hr]) nr&=~(1<<hr); |
| 7990 | //if(regs[i].regmap[hr]<0) nr&=~(1<<hr); |
| 7991 | // Merge in delay slot |
| 7992 | if (dops[i+1].rt1) nr &= ~get_regm(regs[i].regmap, dops[i+1].rt1); |
| 7993 | if (dops[i+1].rt2) nr &= ~get_regm(regs[i].regmap, dops[i+1].rt2); |
| 7994 | nr |= get_regm(regmap_pre[i], dops[i+1].rs1); |
| 7995 | nr |= get_regm(regmap_pre[i], dops[i+1].rs2); |
| 7996 | nr |= get_regm(regs[i].regmap_entry, dops[i+1].rs1); |
| 7997 | nr |= get_regm(regs[i].regmap_entry, dops[i+1].rs2); |
| 7998 | if (ram_offset && (dops[i+1].is_load || dops[i+1].is_store)) { |
| 7999 | nr |= get_regm(regmap_pre[i], ROREG); |
| 8000 | nr |= get_regm(regs[i].regmap_entry, ROREG); |
| 8001 | } |
| 8002 | if (dops[i+1].is_store) { |
| 8003 | nr |= get_regm(regmap_pre[i], INVCP); |
| 8004 | nr |= get_regm(regs[i].regmap_entry, INVCP); |
| 8005 | } |
| 8006 | } |
| 8007 | else if(dops[i].itype==SYSCALL||dops[i].itype==HLECALL||dops[i].itype==INTCALL) |
| 8008 | { |
| 8009 | // SYSCALL instruction (software interrupt) |
| 8010 | nr=0; |
| 8011 | } |
| 8012 | else if(dops[i].itype==COP0 && (source[i]&0x3f)==0x18) |
| 8013 | { |
| 8014 | // ERET instruction (return from interrupt) |
| 8015 | nr=0; |
| 8016 | } |
| 8017 | else // Non-branch |
| 8018 | { |
| 8019 | if(i<slen-1) { |
| 8020 | for(hr=0;hr<HOST_REGS;hr++) { |
| 8021 | if(regmap_pre[i+1][hr]>=0&&get_reg(regs[i+1].regmap_entry,regmap_pre[i+1][hr])<0) nr&=~(1<<hr); |
| 8022 | if(regs[i].regmap[hr]!=regmap_pre[i+1][hr]) nr&=~(1<<hr); |
| 8023 | if(regs[i].regmap[hr]!=regmap_pre[i][hr]) nr&=~(1<<hr); |
| 8024 | if(regs[i].regmap[hr]<0) nr&=~(1<<hr); |
| 8025 | } |
| 8026 | } |
| 8027 | } |
| 8028 | // Overwritten registers are not needed |
| 8029 | if (dops[i].rt1) nr &= ~get_regm(regs[i].regmap, dops[i].rt1); |
| 8030 | if (dops[i].rt2) nr &= ~get_regm(regs[i].regmap, dops[i].rt2); |
| 8031 | nr &= ~get_regm(regs[i].regmap, FTEMP); |
| 8032 | // Source registers are needed |
| 8033 | nr |= get_regm(regmap_pre[i], dops[i].rs1); |
| 8034 | nr |= get_regm(regmap_pre[i], dops[i].rs2); |
| 8035 | nr |= get_regm(regs[i].regmap_entry, dops[i].rs1); |
| 8036 | nr |= get_regm(regs[i].regmap_entry, dops[i].rs2); |
| 8037 | if (ram_offset && (dops[i].is_load || dops[i].is_store)) { |
| 8038 | nr |= get_regm(regmap_pre[i], ROREG); |
| 8039 | nr |= get_regm(regs[i].regmap_entry, ROREG); |
| 8040 | } |
| 8041 | if (dops[i].is_store) { |
| 8042 | nr |= get_regm(regmap_pre[i], INVCP); |
| 8043 | nr |= get_regm(regs[i].regmap_entry, INVCP); |
| 8044 | } |
| 8045 | |
| 8046 | if (i > 0 && !dops[i].bt && regs[i].wasdirty) |
| 8047 | for(hr=0;hr<HOST_REGS;hr++) |
| 8048 | { |
| 8049 | // Don't store a register immediately after writing it, |
| 8050 | // may prevent dual-issue. |
| 8051 | // But do so if this is a branch target, otherwise we |
| 8052 | // might have to load the register before the branch. |
| 8053 | if((regs[i].wasdirty>>hr)&1) { |
| 8054 | if((regmap_pre[i][hr]>0&&!((unneeded_reg[i]>>regmap_pre[i][hr])&1))) { |
| 8055 | if(dops[i-1].rt1==regmap_pre[i][hr]) nr|=1<<hr; |
| 8056 | if(dops[i-1].rt2==regmap_pre[i][hr]) nr|=1<<hr; |
| 8057 | } |
| 8058 | if((regs[i].regmap_entry[hr]>0&&!((unneeded_reg[i]>>regs[i].regmap_entry[hr])&1))) { |
| 8059 | if(dops[i-1].rt1==regs[i].regmap_entry[hr]) nr|=1<<hr; |
| 8060 | if(dops[i-1].rt2==regs[i].regmap_entry[hr]) nr|=1<<hr; |
| 8061 | } |
| 8062 | } |
| 8063 | } |
| 8064 | // Cycle count is needed at branches. Assume it is needed at the target too. |
| 8065 | if(i==0||dops[i].bt||dops[i].itype==CJUMP||dops[i].itype==SPAN) { |
| 8066 | if(regmap_pre[i][HOST_CCREG]==CCREG) nr|=1<<HOST_CCREG; |
| 8067 | if(regs[i].regmap_entry[HOST_CCREG]==CCREG) nr|=1<<HOST_CCREG; |
| 8068 | } |
| 8069 | // Save it |
| 8070 | last_needed_regs[i & 3] = nr; |
| 8071 | |
| 8072 | // Deallocate unneeded registers |
| 8073 | for(hr=0;hr<HOST_REGS;hr++) |
| 8074 | { |
| 8075 | if(!((nr>>hr)&1)) { |
| 8076 | if(regs[i].regmap_entry[hr]!=CCREG) regs[i].regmap_entry[hr]=-1; |
| 8077 | if(dops[i].is_jump) |
| 8078 | { |
| 8079 | int map1 = 0, map2 = 0, temp = 0; // or -1 ?? |
| 8080 | if (dops[i+1].is_load || dops[i+1].is_store) |
| 8081 | map1 = ROREG; |
| 8082 | if (dops[i+1].is_store) |
| 8083 | map2 = INVCP; |
| 8084 | if(dops[i+1].itype==LOADLR || dops[i+1].itype==STORELR || dops[i+1].itype==C2LS) |
| 8085 | temp = FTEMP; |
| 8086 | if(regs[i].regmap[hr]!=dops[i].rs1 && regs[i].regmap[hr]!=dops[i].rs2 && |
| 8087 | regs[i].regmap[hr]!=dops[i].rt1 && regs[i].regmap[hr]!=dops[i].rt2 && |
| 8088 | regs[i].regmap[hr]!=dops[i+1].rt1 && regs[i].regmap[hr]!=dops[i+1].rt2 && |
| 8089 | regs[i].regmap[hr]!=dops[i+1].rs1 && regs[i].regmap[hr]!=dops[i+1].rs2 && |
| 8090 | regs[i].regmap[hr]!=temp && regs[i].regmap[hr]!=PTEMP && |
| 8091 | regs[i].regmap[hr]!=RHASH && regs[i].regmap[hr]!=RHTBL && |
| 8092 | regs[i].regmap[hr]!=RTEMP && regs[i].regmap[hr]!=CCREG && |
| 8093 | regs[i].regmap[hr]!=map1 && regs[i].regmap[hr]!=map2) |
| 8094 | { |
| 8095 | regs[i].regmap[hr]=-1; |
| 8096 | regs[i].isconst&=~(1<<hr); |
| 8097 | regs[i].dirty&=~(1<<hr); |
| 8098 | regs[i+1].wasdirty&=~(1<<hr); |
| 8099 | if(branch_regs[i].regmap[hr]!=dops[i].rs1 && branch_regs[i].regmap[hr]!=dops[i].rs2 && |
| 8100 | branch_regs[i].regmap[hr]!=dops[i].rt1 && branch_regs[i].regmap[hr]!=dops[i].rt2 && |
| 8101 | branch_regs[i].regmap[hr]!=dops[i+1].rt1 && branch_regs[i].regmap[hr]!=dops[i+1].rt2 && |
| 8102 | branch_regs[i].regmap[hr]!=dops[i+1].rs1 && branch_regs[i].regmap[hr]!=dops[i+1].rs2 && |
| 8103 | branch_regs[i].regmap[hr]!=temp && branch_regs[i].regmap[hr]!=PTEMP && |
| 8104 | branch_regs[i].regmap[hr]!=RHASH && branch_regs[i].regmap[hr]!=RHTBL && |
| 8105 | branch_regs[i].regmap[hr]!=RTEMP && branch_regs[i].regmap[hr]!=CCREG && |
| 8106 | branch_regs[i].regmap[hr]!=map1 && branch_regs[i].regmap[hr]!=map2) |
| 8107 | { |
| 8108 | branch_regs[i].regmap[hr]=-1; |
| 8109 | branch_regs[i].regmap_entry[hr]=-1; |
| 8110 | if (!dops[i].is_ujump) |
| 8111 | { |
| 8112 | if (i < slen-2) { |
| 8113 | regmap_pre[i+2][hr]=-1; |
| 8114 | regs[i+2].wasconst&=~(1<<hr); |
| 8115 | } |
| 8116 | } |
| 8117 | } |
| 8118 | } |
| 8119 | } |
| 8120 | else |
| 8121 | { |
| 8122 | // Non-branch |
| 8123 | if(i>0) |
| 8124 | { |
| 8125 | int map1 = -1, map2 = -1, temp=-1; |
| 8126 | if (dops[i].is_load || dops[i].is_store) |
| 8127 | map1 = ROREG; |
| 8128 | if (dops[i].is_store) |
| 8129 | map2 = INVCP; |
| 8130 | if (dops[i].itype==LOADLR || dops[i].itype==STORELR || dops[i].itype==C2LS) |
| 8131 | temp = FTEMP; |
| 8132 | if(regs[i].regmap[hr]!=dops[i].rt1 && regs[i].regmap[hr]!=dops[i].rt2 && |
| 8133 | regs[i].regmap[hr]!=dops[i].rs1 && regs[i].regmap[hr]!=dops[i].rs2 && |
| 8134 | regs[i].regmap[hr]!=temp && regs[i].regmap[hr]!=map1 && regs[i].regmap[hr]!=map2 && |
| 8135 | //(dops[i].itype!=SPAN||regs[i].regmap[hr]!=CCREG) |
| 8136 | regs[i].regmap[hr] != CCREG) |
| 8137 | { |
| 8138 | if(i<slen-1&&!dops[i].is_ds) { |
| 8139 | assert(regs[i].regmap[hr]<64); |
| 8140 | if(regmap_pre[i+1][hr]!=-1 || regs[i].regmap[hr]>0) |
| 8141 | if(regmap_pre[i+1][hr]!=regs[i].regmap[hr]) |
| 8142 | { |
| 8143 | SysPrintf("fail: %x (%d %d!=%d)\n",start+i*4,hr,regmap_pre[i+1][hr],regs[i].regmap[hr]); |
| 8144 | assert(regmap_pre[i+1][hr]==regs[i].regmap[hr]); |
| 8145 | } |
| 8146 | regmap_pre[i+1][hr]=-1; |
| 8147 | if(regs[i+1].regmap_entry[hr]==CCREG) regs[i+1].regmap_entry[hr]=-1; |
| 8148 | regs[i+1].wasconst&=~(1<<hr); |
| 8149 | } |
| 8150 | regs[i].regmap[hr]=-1; |
| 8151 | regs[i].isconst&=~(1<<hr); |
| 8152 | regs[i].dirty&=~(1<<hr); |
| 8153 | regs[i+1].wasdirty&=~(1<<hr); |
| 8154 | } |
| 8155 | } |
| 8156 | } |
| 8157 | } // if needed |
| 8158 | } // for hr |
| 8159 | } |
| 8160 | } |
| 8161 | |
| 8162 | // If a register is allocated during a loop, try to allocate it for the |
| 8163 | // entire loop, if possible. This avoids loading/storing registers |
| 8164 | // inside of the loop. |
| 8165 | static noinline void pass5a_preallocate1(void) |
| 8166 | { |
| 8167 | int i, j, hr; |
| 8168 | signed char f_regmap[HOST_REGS]; |
| 8169 | clear_all_regs(f_regmap); |
| 8170 | for(i=0;i<slen-1;i++) |
| 8171 | { |
| 8172 | if(dops[i].itype==UJUMP||dops[i].itype==CJUMP||dops[i].itype==SJUMP) |
| 8173 | { |
| 8174 | if(ba[i]>=start && ba[i]<(start+i*4)) |
| 8175 | if(dops[i+1].itype==NOP||dops[i+1].itype==MOV||dops[i+1].itype==ALU |
| 8176 | ||dops[i+1].itype==SHIFTIMM||dops[i+1].itype==IMM16||dops[i+1].itype==LOAD |
| 8177 | ||dops[i+1].itype==STORE||dops[i+1].itype==STORELR||dops[i+1].itype==C1LS |
| 8178 | ||dops[i+1].itype==SHIFT||dops[i+1].itype==COP1 |
| 8179 | ||dops[i+1].itype==COP2||dops[i+1].itype==C2LS||dops[i+1].itype==C2OP) |
| 8180 | { |
| 8181 | int t=(ba[i]-start)>>2; |
| 8182 | if(t > 0 && !dops[t-1].is_jump) // loop_preload can't handle jumps into delay slots |
| 8183 | if(t<2||(dops[t-2].itype!=UJUMP&&dops[t-2].itype!=RJUMP)||dops[t-2].rt1!=31) // call/ret assumes no registers allocated |
| 8184 | for(hr=0;hr<HOST_REGS;hr++) |
| 8185 | { |
| 8186 | if(regs[i].regmap[hr]>=0) { |
| 8187 | if(f_regmap[hr]!=regs[i].regmap[hr]) { |
| 8188 | // dealloc old register |
| 8189 | int n; |
| 8190 | for(n=0;n<HOST_REGS;n++) |
| 8191 | { |
| 8192 | if(f_regmap[n]==regs[i].regmap[hr]) {f_regmap[n]=-1;} |
| 8193 | } |
| 8194 | // and alloc new one |
| 8195 | f_regmap[hr]=regs[i].regmap[hr]; |
| 8196 | } |
| 8197 | } |
| 8198 | if(branch_regs[i].regmap[hr]>=0) { |
| 8199 | if(f_regmap[hr]!=branch_regs[i].regmap[hr]) { |
| 8200 | // dealloc old register |
| 8201 | int n; |
| 8202 | for(n=0;n<HOST_REGS;n++) |
| 8203 | { |
| 8204 | if(f_regmap[n]==branch_regs[i].regmap[hr]) {f_regmap[n]=-1;} |
| 8205 | } |
| 8206 | // and alloc new one |
| 8207 | f_regmap[hr]=branch_regs[i].regmap[hr]; |
| 8208 | } |
| 8209 | } |
| 8210 | if(dops[i].ooo) { |
| 8211 | if(count_free_regs(regs[i].regmap)<=minimum_free_regs[i+1]) |
| 8212 | f_regmap[hr]=branch_regs[i].regmap[hr]; |
| 8213 | }else{ |
| 8214 | if(count_free_regs(branch_regs[i].regmap)<=minimum_free_regs[i+1]) |
| 8215 | f_regmap[hr]=branch_regs[i].regmap[hr]; |
| 8216 | } |
| 8217 | // Avoid dirty->clean transition |
| 8218 | #ifdef DESTRUCTIVE_WRITEBACK |
| 8219 | if(t>0) if(get_reg(regmap_pre[t],f_regmap[hr])>=0) if((regs[t].wasdirty>>get_reg(regmap_pre[t],f_regmap[hr]))&1) f_regmap[hr]=-1; |
| 8220 | #endif |
| 8221 | // This check is only strictly required in the DESTRUCTIVE_WRITEBACK |
| 8222 | // case above, however it's always a good idea. We can't hoist the |
| 8223 | // load if the register was already allocated, so there's no point |
| 8224 | // wasting time analyzing most of these cases. It only "succeeds" |
| 8225 | // when the mapping was different and the load can be replaced with |
| 8226 | // a mov, which is of negligible benefit. So such cases are |
| 8227 | // skipped below. |
| 8228 | if(f_regmap[hr]>0) { |
| 8229 | if(regs[t].regmap[hr]==f_regmap[hr]||(regs[t].regmap_entry[hr]<0&&get_reg(regmap_pre[t],f_regmap[hr])<0)) { |
| 8230 | int r=f_regmap[hr]; |
| 8231 | for(j=t;j<=i;j++) |
| 8232 | { |
| 8233 | //printf("Test %x -> %x, %x %d/%d\n",start+i*4,ba[i],start+j*4,hr,r); |
| 8234 | if(r<34&&((unneeded_reg[j]>>r)&1)) break; |
| 8235 | assert(r < 64); |
| 8236 | if(regs[j].regmap[hr]==f_regmap[hr]&&f_regmap[hr]<TEMPREG) { |
| 8237 | //printf("Hit %x -> %x, %x %d/%d\n",start+i*4,ba[i],start+j*4,hr,r); |
| 8238 | int k; |
| 8239 | if(regs[i].regmap[hr]==-1&&branch_regs[i].regmap[hr]==-1) { |
| 8240 | if(get_reg(regs[i].regmap,f_regmap[hr])>=0) break; |
| 8241 | if(get_reg(regs[i+2].regmap,f_regmap[hr])>=0) break; |
| 8242 | k=i; |
| 8243 | while(k>1&®s[k-1].regmap[hr]==-1) { |
| 8244 | if(count_free_regs(regs[k-1].regmap)<=minimum_free_regs[k-1]) { |
| 8245 | //printf("no free regs for store %x\n",start+(k-1)*4); |
| 8246 | break; |
| 8247 | } |
| 8248 | if(get_reg(regs[k-1].regmap,f_regmap[hr])>=0) { |
| 8249 | //printf("no-match due to different register\n"); |
| 8250 | break; |
| 8251 | } |
| 8252 | if (dops[k-2].is_jump) { |
| 8253 | //printf("no-match due to branch\n"); |
| 8254 | break; |
| 8255 | } |
| 8256 | // call/ret fast path assumes no registers allocated |
| 8257 | if(k>2&&(dops[k-3].itype==UJUMP||dops[k-3].itype==RJUMP)&&dops[k-3].rt1==31) { |
| 8258 | break; |
| 8259 | } |
| 8260 | k--; |
| 8261 | } |
| 8262 | if(regs[k-1].regmap[hr]==f_regmap[hr]&®map_pre[k][hr]==f_regmap[hr]) { |
| 8263 | //printf("Extend r%d, %x ->\n",hr,start+k*4); |
| 8264 | while(k<i) { |
| 8265 | regs[k].regmap_entry[hr]=f_regmap[hr]; |
| 8266 | regs[k].regmap[hr]=f_regmap[hr]; |
| 8267 | regmap_pre[k+1][hr]=f_regmap[hr]; |
| 8268 | regs[k].wasdirty&=~(1<<hr); |
| 8269 | regs[k].dirty&=~(1<<hr); |
| 8270 | regs[k].wasdirty|=(1<<hr)®s[k-1].dirty; |
| 8271 | regs[k].dirty|=(1<<hr)®s[k].wasdirty; |
| 8272 | regs[k].wasconst&=~(1<<hr); |
| 8273 | regs[k].isconst&=~(1<<hr); |
| 8274 | k++; |
| 8275 | } |
| 8276 | } |
| 8277 | else { |
| 8278 | //printf("Fail Extend r%d, %x ->\n",hr,start+k*4); |
| 8279 | break; |
| 8280 | } |
| 8281 | assert(regs[i-1].regmap[hr]==f_regmap[hr]); |
| 8282 | if(regs[i-1].regmap[hr]==f_regmap[hr]&®map_pre[i][hr]==f_regmap[hr]) { |
| 8283 | //printf("OK fill %x (r%d)\n",start+i*4,hr); |
| 8284 | regs[i].regmap_entry[hr]=f_regmap[hr]; |
| 8285 | regs[i].regmap[hr]=f_regmap[hr]; |
| 8286 | regs[i].wasdirty&=~(1<<hr); |
| 8287 | regs[i].dirty&=~(1<<hr); |
| 8288 | regs[i].wasdirty|=(1<<hr)®s[i-1].dirty; |
| 8289 | regs[i].dirty|=(1<<hr)®s[i-1].dirty; |
| 8290 | regs[i].wasconst&=~(1<<hr); |
| 8291 | regs[i].isconst&=~(1<<hr); |
| 8292 | branch_regs[i].regmap_entry[hr]=f_regmap[hr]; |
| 8293 | branch_regs[i].wasdirty&=~(1<<hr); |
| 8294 | branch_regs[i].wasdirty|=(1<<hr)®s[i].dirty; |
| 8295 | branch_regs[i].regmap[hr]=f_regmap[hr]; |
| 8296 | branch_regs[i].dirty&=~(1<<hr); |
| 8297 | branch_regs[i].dirty|=(1<<hr)®s[i].dirty; |
| 8298 | branch_regs[i].wasconst&=~(1<<hr); |
| 8299 | branch_regs[i].isconst&=~(1<<hr); |
| 8300 | if (!dops[i].is_ujump) { |
| 8301 | regmap_pre[i+2][hr]=f_regmap[hr]; |
| 8302 | regs[i+2].wasdirty&=~(1<<hr); |
| 8303 | regs[i+2].wasdirty|=(1<<hr)®s[i].dirty; |
| 8304 | } |
| 8305 | } |
| 8306 | } |
| 8307 | for(k=t;k<j;k++) { |
| 8308 | // Alloc register clean at beginning of loop, |
| 8309 | // but may dirty it in pass 6 |
| 8310 | regs[k].regmap_entry[hr]=f_regmap[hr]; |
| 8311 | regs[k].regmap[hr]=f_regmap[hr]; |
| 8312 | regs[k].dirty&=~(1<<hr); |
| 8313 | regs[k].wasconst&=~(1<<hr); |
| 8314 | regs[k].isconst&=~(1<<hr); |
| 8315 | if (dops[k].is_jump) { |
| 8316 | branch_regs[k].regmap_entry[hr]=f_regmap[hr]; |
| 8317 | branch_regs[k].regmap[hr]=f_regmap[hr]; |
| 8318 | branch_regs[k].dirty&=~(1<<hr); |
| 8319 | branch_regs[k].wasconst&=~(1<<hr); |
| 8320 | branch_regs[k].isconst&=~(1<<hr); |
| 8321 | if (!dops[k].is_ujump) { |
| 8322 | regmap_pre[k+2][hr]=f_regmap[hr]; |
| 8323 | regs[k+2].wasdirty&=~(1<<hr); |
| 8324 | } |
| 8325 | } |
| 8326 | else |
| 8327 | { |
| 8328 | regmap_pre[k+1][hr]=f_regmap[hr]; |
| 8329 | regs[k+1].wasdirty&=~(1<<hr); |
| 8330 | } |
| 8331 | } |
| 8332 | if(regs[j].regmap[hr]==f_regmap[hr]) |
| 8333 | regs[j].regmap_entry[hr]=f_regmap[hr]; |
| 8334 | break; |
| 8335 | } |
| 8336 | if(j==i) break; |
| 8337 | if(regs[j].regmap[hr]>=0) |
| 8338 | break; |
| 8339 | if(get_reg(regs[j].regmap,f_regmap[hr])>=0) { |
| 8340 | //printf("no-match due to different register\n"); |
| 8341 | break; |
| 8342 | } |
| 8343 | if (dops[j].is_ujump) |
| 8344 | { |
| 8345 | // Stop on unconditional branch |
| 8346 | break; |
| 8347 | } |
| 8348 | if(dops[j].itype==CJUMP||dops[j].itype==SJUMP) |
| 8349 | { |
| 8350 | if(dops[j].ooo) { |
| 8351 | if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j+1]) |
| 8352 | break; |
| 8353 | }else{ |
| 8354 | if(count_free_regs(branch_regs[j].regmap)<=minimum_free_regs[j+1]) |
| 8355 | break; |
| 8356 | } |
| 8357 | if(get_reg(branch_regs[j].regmap,f_regmap[hr])>=0) { |
| 8358 | //printf("no-match due to different register (branch)\n"); |
| 8359 | break; |
| 8360 | } |
| 8361 | } |
| 8362 | if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j]) { |
| 8363 | //printf("No free regs for store %x\n",start+j*4); |
| 8364 | break; |
| 8365 | } |
| 8366 | assert(f_regmap[hr]<64); |
| 8367 | } |
| 8368 | } |
| 8369 | } |
| 8370 | } |
| 8371 | } |
| 8372 | }else{ |
| 8373 | // Non branch or undetermined branch target |
| 8374 | for(hr=0;hr<HOST_REGS;hr++) |
| 8375 | { |
| 8376 | if(hr!=EXCLUDE_REG) { |
| 8377 | if(regs[i].regmap[hr]>=0) { |
| 8378 | if(f_regmap[hr]!=regs[i].regmap[hr]) { |
| 8379 | // dealloc old register |
| 8380 | int n; |
| 8381 | for(n=0;n<HOST_REGS;n++) |
| 8382 | { |
| 8383 | if(f_regmap[n]==regs[i].regmap[hr]) {f_regmap[n]=-1;} |
| 8384 | } |
| 8385 | // and alloc new one |
| 8386 | f_regmap[hr]=regs[i].regmap[hr]; |
| 8387 | } |
| 8388 | } |
| 8389 | } |
| 8390 | } |
| 8391 | // Try to restore cycle count at branch targets |
| 8392 | if(dops[i].bt) { |
| 8393 | for(j=i;j<slen-1;j++) { |
| 8394 | if(regs[j].regmap[HOST_CCREG]!=-1) break; |
| 8395 | if(count_free_regs(regs[j].regmap)<=minimum_free_regs[j]) { |
| 8396 | //printf("no free regs for store %x\n",start+j*4); |
| 8397 | break; |
| 8398 | } |
| 8399 | } |
| 8400 | if(regs[j].regmap[HOST_CCREG]==CCREG) { |
| 8401 | int k=i; |
| 8402 | //printf("Extend CC, %x -> %x\n",start+k*4,start+j*4); |
| 8403 | while(k<j) { |
| 8404 | regs[k].regmap_entry[HOST_CCREG]=CCREG; |
| 8405 | regs[k].regmap[HOST_CCREG]=CCREG; |
| 8406 | regmap_pre[k+1][HOST_CCREG]=CCREG; |
| 8407 | regs[k+1].wasdirty|=1<<HOST_CCREG; |
| 8408 | regs[k].dirty|=1<<HOST_CCREG; |
| 8409 | regs[k].wasconst&=~(1<<HOST_CCREG); |
| 8410 | regs[k].isconst&=~(1<<HOST_CCREG); |
| 8411 | k++; |
| 8412 | } |
| 8413 | regs[j].regmap_entry[HOST_CCREG]=CCREG; |
| 8414 | } |
| 8415 | // Work backwards from the branch target |
| 8416 | if(j>i&&f_regmap[HOST_CCREG]==CCREG) |
| 8417 | { |
| 8418 | //printf("Extend backwards\n"); |
| 8419 | int k; |
| 8420 | k=i; |
| 8421 | while(regs[k-1].regmap[HOST_CCREG]==-1) { |
| 8422 | if(count_free_regs(regs[k-1].regmap)<=minimum_free_regs[k-1]) { |
| 8423 | //printf("no free regs for store %x\n",start+(k-1)*4); |
| 8424 | break; |
| 8425 | } |
| 8426 | k--; |
| 8427 | } |
| 8428 | if(regs[k-1].regmap[HOST_CCREG]==CCREG) { |
| 8429 | //printf("Extend CC, %x ->\n",start+k*4); |
| 8430 | while(k<=i) { |
| 8431 | regs[k].regmap_entry[HOST_CCREG]=CCREG; |
| 8432 | regs[k].regmap[HOST_CCREG]=CCREG; |
| 8433 | regmap_pre[k+1][HOST_CCREG]=CCREG; |
| 8434 | regs[k+1].wasdirty|=1<<HOST_CCREG; |
| 8435 | regs[k].dirty|=1<<HOST_CCREG; |
| 8436 | regs[k].wasconst&=~(1<<HOST_CCREG); |
| 8437 | regs[k].isconst&=~(1<<HOST_CCREG); |
| 8438 | k++; |
| 8439 | } |
| 8440 | } |
| 8441 | else { |
| 8442 | //printf("Fail Extend CC, %x ->\n",start+k*4); |
| 8443 | } |
| 8444 | } |
| 8445 | } |
| 8446 | if(dops[i].itype!=STORE&&dops[i].itype!=STORELR&&dops[i].itype!=C1LS&&dops[i].itype!=SHIFT&& |
| 8447 | dops[i].itype!=NOP&&dops[i].itype!=MOV&&dops[i].itype!=ALU&&dops[i].itype!=SHIFTIMM&& |
| 8448 | dops[i].itype!=IMM16&&dops[i].itype!=LOAD&&dops[i].itype!=COP1) |
| 8449 | { |
| 8450 | memcpy(f_regmap,regs[i].regmap,sizeof(f_regmap)); |
| 8451 | } |
| 8452 | } |
| 8453 | } |
| 8454 | } |
| 8455 | |
| 8456 | // This allocates registers (if possible) one instruction prior |
| 8457 | // to use, which can avoid a load-use penalty on certain CPUs. |
| 8458 | static noinline void pass5b_preallocate2(void) |
| 8459 | { |
| 8460 | int i, hr; |
| 8461 | for(i=0;i<slen-1;i++) |
| 8462 | { |
| 8463 | if (!i || !dops[i-1].is_jump) |
| 8464 | { |
| 8465 | if(!dops[i+1].bt) |
| 8466 | { |
| 8467 | if(dops[i].itype==ALU||dops[i].itype==MOV||dops[i].itype==LOAD||dops[i].itype==SHIFTIMM||dops[i].itype==IMM16 |
| 8468 | ||((dops[i].itype==COP1||dops[i].itype==COP2)&&dops[i].opcode2<3)) |
| 8469 | { |
| 8470 | if(dops[i+1].rs1) { |
| 8471 | if((hr=get_reg(regs[i+1].regmap,dops[i+1].rs1))>=0) |
| 8472 | { |
| 8473 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8474 | { |
| 8475 | regs[i].regmap[hr]=regs[i+1].regmap[hr]; |
| 8476 | regmap_pre[i+1][hr]=regs[i+1].regmap[hr]; |
| 8477 | regs[i+1].regmap_entry[hr]=regs[i+1].regmap[hr]; |
| 8478 | regs[i].isconst&=~(1<<hr); |
| 8479 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8480 | constmap[i][hr]=constmap[i+1][hr]; |
| 8481 | regs[i+1].wasdirty&=~(1<<hr); |
| 8482 | regs[i].dirty&=~(1<<hr); |
| 8483 | } |
| 8484 | } |
| 8485 | } |
| 8486 | if(dops[i+1].rs2) { |
| 8487 | if((hr=get_reg(regs[i+1].regmap,dops[i+1].rs2))>=0) |
| 8488 | { |
| 8489 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8490 | { |
| 8491 | regs[i].regmap[hr]=regs[i+1].regmap[hr]; |
| 8492 | regmap_pre[i+1][hr]=regs[i+1].regmap[hr]; |
| 8493 | regs[i+1].regmap_entry[hr]=regs[i+1].regmap[hr]; |
| 8494 | regs[i].isconst&=~(1<<hr); |
| 8495 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8496 | constmap[i][hr]=constmap[i+1][hr]; |
| 8497 | regs[i+1].wasdirty&=~(1<<hr); |
| 8498 | regs[i].dirty&=~(1<<hr); |
| 8499 | } |
| 8500 | } |
| 8501 | } |
| 8502 | // Preload target address for load instruction (non-constant) |
| 8503 | if(dops[i+1].itype==LOAD&&dops[i+1].rs1&&get_reg(regs[i+1].regmap,dops[i+1].rs1)<0) { |
| 8504 | if((hr=get_reg(regs[i+1].regmap,dops[i+1].rt1))>=0) |
| 8505 | { |
| 8506 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8507 | { |
| 8508 | regs[i].regmap[hr]=dops[i+1].rs1; |
| 8509 | regmap_pre[i+1][hr]=dops[i+1].rs1; |
| 8510 | regs[i+1].regmap_entry[hr]=dops[i+1].rs1; |
| 8511 | regs[i].isconst&=~(1<<hr); |
| 8512 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8513 | constmap[i][hr]=constmap[i+1][hr]; |
| 8514 | regs[i+1].wasdirty&=~(1<<hr); |
| 8515 | regs[i].dirty&=~(1<<hr); |
| 8516 | } |
| 8517 | } |
| 8518 | } |
| 8519 | // Load source into target register |
| 8520 | if(dops[i+1].use_lt1&&get_reg(regs[i+1].regmap,dops[i+1].rs1)<0) { |
| 8521 | if((hr=get_reg(regs[i+1].regmap,dops[i+1].rt1))>=0) |
| 8522 | { |
| 8523 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8524 | { |
| 8525 | regs[i].regmap[hr]=dops[i+1].rs1; |
| 8526 | regmap_pre[i+1][hr]=dops[i+1].rs1; |
| 8527 | regs[i+1].regmap_entry[hr]=dops[i+1].rs1; |
| 8528 | regs[i].isconst&=~(1<<hr); |
| 8529 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8530 | constmap[i][hr]=constmap[i+1][hr]; |
| 8531 | regs[i+1].wasdirty&=~(1<<hr); |
| 8532 | regs[i].dirty&=~(1<<hr); |
| 8533 | } |
| 8534 | } |
| 8535 | } |
| 8536 | // Address for store instruction (non-constant) |
| 8537 | if(dops[i+1].itype==STORE||dops[i+1].itype==STORELR |
| 8538 | ||(dops[i+1].opcode&0x3b)==0x39||(dops[i+1].opcode&0x3b)==0x3a) { // SB/SH/SW/SD/SWC1/SDC1/SWC2/SDC2 |
| 8539 | if(get_reg(regs[i+1].regmap,dops[i+1].rs1)<0) { |
| 8540 | hr=get_reg2(regs[i].regmap,regs[i+1].regmap,-1); |
| 8541 | if(hr<0) hr=get_reg_temp(regs[i+1].regmap); |
| 8542 | else { |
| 8543 | regs[i+1].regmap[hr]=AGEN1+((i+1)&1); |
| 8544 | regs[i+1].isconst&=~(1<<hr); |
| 8545 | } |
| 8546 | assert(hr>=0); |
| 8547 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8548 | { |
| 8549 | regs[i].regmap[hr]=dops[i+1].rs1; |
| 8550 | regmap_pre[i+1][hr]=dops[i+1].rs1; |
| 8551 | regs[i+1].regmap_entry[hr]=dops[i+1].rs1; |
| 8552 | regs[i].isconst&=~(1<<hr); |
| 8553 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8554 | constmap[i][hr]=constmap[i+1][hr]; |
| 8555 | regs[i+1].wasdirty&=~(1<<hr); |
| 8556 | regs[i].dirty&=~(1<<hr); |
| 8557 | } |
| 8558 | } |
| 8559 | } |
| 8560 | if(dops[i+1].itype==LOADLR||(dops[i+1].opcode&0x3b)==0x31||(dops[i+1].opcode&0x3b)==0x32) { // LWC1/LDC1, LWC2/LDC2 |
| 8561 | if(get_reg(regs[i+1].regmap,dops[i+1].rs1)<0) { |
| 8562 | int nr; |
| 8563 | hr=get_reg(regs[i+1].regmap,FTEMP); |
| 8564 | assert(hr>=0); |
| 8565 | if(regs[i].regmap[hr]<0&®s[i+1].regmap_entry[hr]<0) |
| 8566 | { |
| 8567 | regs[i].regmap[hr]=dops[i+1].rs1; |
| 8568 | regmap_pre[i+1][hr]=dops[i+1].rs1; |
| 8569 | regs[i+1].regmap_entry[hr]=dops[i+1].rs1; |
| 8570 | regs[i].isconst&=~(1<<hr); |
| 8571 | regs[i].isconst|=regs[i+1].isconst&(1<<hr); |
| 8572 | constmap[i][hr]=constmap[i+1][hr]; |
| 8573 | regs[i+1].wasdirty&=~(1<<hr); |
| 8574 | regs[i].dirty&=~(1<<hr); |
| 8575 | } |
| 8576 | else if((nr=get_reg2(regs[i].regmap,regs[i+1].regmap,-1))>=0) |
| 8577 | { |
| 8578 | // move it to another register |
| 8579 | regs[i+1].regmap[hr]=-1; |
| 8580 | regmap_pre[i+2][hr]=-1; |
| 8581 | regs[i+1].regmap[nr]=FTEMP; |
| 8582 | regmap_pre[i+2][nr]=FTEMP; |
| 8583 | regs[i].regmap[nr]=dops[i+1].rs1; |
| 8584 | regmap_pre[i+1][nr]=dops[i+1].rs1; |
| 8585 | regs[i+1].regmap_entry[nr]=dops[i+1].rs1; |
| 8586 | regs[i].isconst&=~(1<<nr); |
| 8587 | regs[i+1].isconst&=~(1<<nr); |
| 8588 | regs[i].dirty&=~(1<<nr); |
| 8589 | regs[i+1].wasdirty&=~(1<<nr); |
| 8590 | regs[i+1].dirty&=~(1<<nr); |
| 8591 | regs[i+2].wasdirty&=~(1<<nr); |
| 8592 | } |
| 8593 | } |
| 8594 | } |
| 8595 | if(dops[i+1].itype==LOAD||dops[i+1].itype==LOADLR||dops[i+1].itype==STORE||dops[i+1].itype==STORELR/*||dops[i+1].itype==C1LS||||dops[i+1].itype==C2LS*/) { |
| 8596 | hr = -1; |
| 8597 | if(dops[i+1].itype==LOAD) |
| 8598 | hr=get_reg(regs[i+1].regmap,dops[i+1].rt1); |
| 8599 | if(dops[i+1].itype==LOADLR||(dops[i+1].opcode&0x3b)==0x31||(dops[i+1].opcode&0x3b)==0x32) // LWC1/LDC1, LWC2/LDC2 |
| 8600 | hr=get_reg(regs[i+1].regmap,FTEMP); |
| 8601 | if(dops[i+1].itype==STORE||dops[i+1].itype==STORELR||(dops[i+1].opcode&0x3b)==0x39||(dops[i+1].opcode&0x3b)==0x3a) { // SWC1/SDC1/SWC2/SDC2 |
| 8602 | hr=get_reg(regs[i+1].regmap,AGEN1+((i+1)&1)); |
| 8603 | if(hr<0) hr=get_reg_temp(regs[i+1].regmap); |
| 8604 | } |
| 8605 | if(hr>=0&®s[i].regmap[hr]<0) { |
| 8606 | int rs=get_reg(regs[i+1].regmap,dops[i+1].rs1); |
| 8607 | if(rs>=0&&((regs[i+1].wasconst>>rs)&1)) { |
| 8608 | regs[i].regmap[hr]=AGEN1+((i+1)&1); |
| 8609 | regmap_pre[i+1][hr]=AGEN1+((i+1)&1); |
| 8610 | regs[i+1].regmap_entry[hr]=AGEN1+((i+1)&1); |
| 8611 | regs[i].isconst&=~(1<<hr); |
| 8612 | regs[i+1].wasdirty&=~(1<<hr); |
| 8613 | regs[i].dirty&=~(1<<hr); |
| 8614 | } |
| 8615 | } |
| 8616 | } |
| 8617 | } |
| 8618 | } |
| 8619 | } |
| 8620 | } |
| 8621 | } |
| 8622 | |
| 8623 | // Write back dirty registers as soon as we will no longer modify them, |
| 8624 | // so that we don't end up with lots of writes at the branches. |
| 8625 | static noinline void pass6_clean_registers(int istart, int iend, int wr) |
| 8626 | { |
| 8627 | static u_int wont_dirty[MAXBLOCK]; |
| 8628 | static u_int will_dirty[MAXBLOCK]; |
| 8629 | int i; |
| 8630 | int r; |
| 8631 | u_int will_dirty_i,will_dirty_next,temp_will_dirty; |
| 8632 | u_int wont_dirty_i,wont_dirty_next,temp_wont_dirty; |
| 8633 | if(iend==slen-1) { |
| 8634 | will_dirty_i=will_dirty_next=0; |
| 8635 | wont_dirty_i=wont_dirty_next=0; |
| 8636 | }else{ |
| 8637 | will_dirty_i=will_dirty_next=will_dirty[iend+1]; |
| 8638 | wont_dirty_i=wont_dirty_next=wont_dirty[iend+1]; |
| 8639 | } |
| 8640 | for (i=iend;i>=istart;i--) |
| 8641 | { |
| 8642 | signed char rregmap_i[RRMAP_SIZE]; |
| 8643 | u_int hr_candirty = 0; |
| 8644 | assert(HOST_REGS < 32); |
| 8645 | make_rregs(regs[i].regmap, rregmap_i, &hr_candirty); |
| 8646 | __builtin_prefetch(regs[i-1].regmap); |
| 8647 | if(dops[i].is_jump) |
| 8648 | { |
| 8649 | signed char branch_rregmap_i[RRMAP_SIZE]; |
| 8650 | u_int branch_hr_candirty = 0; |
| 8651 | make_rregs(branch_regs[i].regmap, branch_rregmap_i, &branch_hr_candirty); |
| 8652 | if(ba[i]<start || ba[i]>=(start+slen*4)) |
| 8653 | { |
| 8654 | // Branch out of this block, flush all regs |
| 8655 | will_dirty_i = 0; |
| 8656 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8657 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8658 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8659 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8660 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8661 | will_dirty_i &= branch_hr_candirty; |
| 8662 | if (dops[i].is_ujump) |
| 8663 | { |
| 8664 | // Unconditional branch |
| 8665 | wont_dirty_i = 0; |
| 8666 | // Merge in delay slot (will dirty) |
| 8667 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8668 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8669 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8670 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8671 | will_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8672 | will_dirty_i &= hr_candirty; |
| 8673 | } |
| 8674 | else |
| 8675 | { |
| 8676 | // Conditional branch |
| 8677 | wont_dirty_i = wont_dirty_next; |
| 8678 | // Merge in delay slot (will dirty) |
| 8679 | // (the original code had no explanation why these 2 are commented out) |
| 8680 | //will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8681 | //will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8682 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8683 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8684 | will_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8685 | will_dirty_i &= hr_candirty; |
| 8686 | } |
| 8687 | // Merge in delay slot (wont dirty) |
| 8688 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8689 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8690 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8691 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8692 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8693 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8694 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8695 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8696 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8697 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8698 | wont_dirty_i &= ~(1u << 31); |
| 8699 | if(wr) { |
| 8700 | #ifndef DESTRUCTIVE_WRITEBACK |
| 8701 | branch_regs[i].dirty&=wont_dirty_i; |
| 8702 | #endif |
| 8703 | branch_regs[i].dirty|=will_dirty_i; |
| 8704 | } |
| 8705 | } |
| 8706 | else |
| 8707 | { |
| 8708 | // Internal branch |
| 8709 | if(ba[i]<=start+i*4) { |
| 8710 | // Backward branch |
| 8711 | if (dops[i].is_ujump) |
| 8712 | { |
| 8713 | // Unconditional branch |
| 8714 | temp_will_dirty=0; |
| 8715 | temp_wont_dirty=0; |
| 8716 | // Merge in delay slot (will dirty) |
| 8717 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8718 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8719 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8720 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8721 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8722 | temp_will_dirty &= branch_hr_candirty; |
| 8723 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8724 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8725 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8726 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8727 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8728 | temp_will_dirty &= hr_candirty; |
| 8729 | } else { |
| 8730 | // Conditional branch (not taken case) |
| 8731 | temp_will_dirty=will_dirty_next; |
| 8732 | temp_wont_dirty=wont_dirty_next; |
| 8733 | // Merge in delay slot (will dirty) |
| 8734 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8735 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8736 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8737 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8738 | temp_will_dirty |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8739 | temp_will_dirty &= branch_hr_candirty; |
| 8740 | //temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8741 | //temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8742 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8743 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8744 | temp_will_dirty |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8745 | temp_will_dirty &= hr_candirty; |
| 8746 | } |
| 8747 | // Merge in delay slot (wont dirty) |
| 8748 | temp_wont_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8749 | temp_wont_dirty |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8750 | temp_wont_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8751 | temp_wont_dirty |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8752 | temp_wont_dirty |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8753 | temp_wont_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8754 | temp_wont_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8755 | temp_wont_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8756 | temp_wont_dirty |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8757 | temp_wont_dirty |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8758 | temp_wont_dirty &= ~(1u << 31); |
| 8759 | // Deal with changed mappings |
| 8760 | if(i<iend) { |
| 8761 | for(r=0;r<HOST_REGS;r++) { |
| 8762 | if(r!=EXCLUDE_REG) { |
| 8763 | if(regs[i].regmap[r]!=regmap_pre[i][r]) { |
| 8764 | temp_will_dirty&=~(1<<r); |
| 8765 | temp_wont_dirty&=~(1<<r); |
| 8766 | if(regmap_pre[i][r]>0 && regmap_pre[i][r]<34) { |
| 8767 | temp_will_dirty|=((unneeded_reg[i]>>regmap_pre[i][r])&1)<<r; |
| 8768 | temp_wont_dirty|=((unneeded_reg[i]>>regmap_pre[i][r])&1)<<r; |
| 8769 | } else { |
| 8770 | temp_will_dirty|=1<<r; |
| 8771 | temp_wont_dirty|=1<<r; |
| 8772 | } |
| 8773 | } |
| 8774 | } |
| 8775 | } |
| 8776 | } |
| 8777 | if(wr) { |
| 8778 | will_dirty[i]=temp_will_dirty; |
| 8779 | wont_dirty[i]=temp_wont_dirty; |
| 8780 | pass6_clean_registers((ba[i]-start)>>2,i-1,0); |
| 8781 | }else{ |
| 8782 | // Limit recursion. It can take an excessive amount |
| 8783 | // of time if there are a lot of nested loops. |
| 8784 | will_dirty[(ba[i]-start)>>2]=0; |
| 8785 | wont_dirty[(ba[i]-start)>>2]=-1; |
| 8786 | } |
| 8787 | } |
| 8788 | /*else*/ if(1) |
| 8789 | { |
| 8790 | if (dops[i].is_ujump) |
| 8791 | { |
| 8792 | // Unconditional branch |
| 8793 | will_dirty_i=0; |
| 8794 | wont_dirty_i=0; |
| 8795 | //if(ba[i]>start+i*4) { // Disable recursion (for debugging) |
| 8796 | for(r=0;r<HOST_REGS;r++) { |
| 8797 | if(r!=EXCLUDE_REG) { |
| 8798 | if(branch_regs[i].regmap[r]==regs[(ba[i]-start)>>2].regmap_entry[r]) { |
| 8799 | will_dirty_i|=will_dirty[(ba[i]-start)>>2]&(1<<r); |
| 8800 | wont_dirty_i|=wont_dirty[(ba[i]-start)>>2]&(1<<r); |
| 8801 | } |
| 8802 | if(branch_regs[i].regmap[r]>=0) { |
| 8803 | will_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>branch_regs[i].regmap[r])&1)<<r; |
| 8804 | wont_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>branch_regs[i].regmap[r])&1)<<r; |
| 8805 | } |
| 8806 | } |
| 8807 | } |
| 8808 | //} |
| 8809 | // Merge in delay slot |
| 8810 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8811 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8812 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8813 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8814 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8815 | will_dirty_i &= branch_hr_candirty; |
| 8816 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8817 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8818 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8819 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8820 | will_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8821 | will_dirty_i &= hr_candirty; |
| 8822 | } else { |
| 8823 | // Conditional branch |
| 8824 | will_dirty_i=will_dirty_next; |
| 8825 | wont_dirty_i=wont_dirty_next; |
| 8826 | //if(ba[i]>start+i*4) // Disable recursion (for debugging) |
| 8827 | for(r=0;r<HOST_REGS;r++) { |
| 8828 | if(r!=EXCLUDE_REG) { |
| 8829 | signed char target_reg=branch_regs[i].regmap[r]; |
| 8830 | if(target_reg==regs[(ba[i]-start)>>2].regmap_entry[r]) { |
| 8831 | will_dirty_i&=will_dirty[(ba[i]-start)>>2]&(1<<r); |
| 8832 | wont_dirty_i|=wont_dirty[(ba[i]-start)>>2]&(1<<r); |
| 8833 | } |
| 8834 | else if(target_reg>=0) { |
| 8835 | will_dirty_i&=((unneeded_reg[(ba[i]-start)>>2]>>target_reg)&1)<<r; |
| 8836 | wont_dirty_i|=((unneeded_reg[(ba[i]-start)>>2]>>target_reg)&1)<<r; |
| 8837 | } |
| 8838 | } |
| 8839 | } |
| 8840 | // Merge in delay slot |
| 8841 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8842 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8843 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8844 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8845 | will_dirty_i |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8846 | will_dirty_i &= branch_hr_candirty; |
| 8847 | //will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8848 | //will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8849 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8850 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8851 | will_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8852 | will_dirty_i &= hr_candirty; |
| 8853 | } |
| 8854 | // Merge in delay slot (won't dirty) |
| 8855 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8856 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8857 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt1) & 31); |
| 8858 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i+1].rt2) & 31); |
| 8859 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8860 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt1) & 31); |
| 8861 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i].rt2) & 31); |
| 8862 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt1) & 31); |
| 8863 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, dops[i+1].rt2) & 31); |
| 8864 | wont_dirty_i |= 1u << (get_rreg(branch_rregmap_i, CCREG) & 31); |
| 8865 | wont_dirty_i &= ~(1u << 31); |
| 8866 | if(wr) { |
| 8867 | #ifndef DESTRUCTIVE_WRITEBACK |
| 8868 | branch_regs[i].dirty&=wont_dirty_i; |
| 8869 | #endif |
| 8870 | branch_regs[i].dirty|=will_dirty_i; |
| 8871 | } |
| 8872 | } |
| 8873 | } |
| 8874 | } |
| 8875 | else if(dops[i].itype==SYSCALL||dops[i].itype==HLECALL||dops[i].itype==INTCALL) |
| 8876 | { |
| 8877 | // SYSCALL instruction (software interrupt) |
| 8878 | will_dirty_i=0; |
| 8879 | wont_dirty_i=0; |
| 8880 | } |
| 8881 | else if(dops[i].itype==COP0 && (source[i]&0x3f)==0x18) |
| 8882 | { |
| 8883 | // ERET instruction (return from interrupt) |
| 8884 | will_dirty_i=0; |
| 8885 | wont_dirty_i=0; |
| 8886 | } |
| 8887 | will_dirty_next=will_dirty_i; |
| 8888 | wont_dirty_next=wont_dirty_i; |
| 8889 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8890 | will_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8891 | will_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8892 | will_dirty_i &= hr_candirty; |
| 8893 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt1) & 31); |
| 8894 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i].rt2) & 31); |
| 8895 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, CCREG) & 31); |
| 8896 | wont_dirty_i &= ~(1u << 31); |
| 8897 | if (i > istart && !dops[i].is_jump) { |
| 8898 | // Don't store a register immediately after writing it, |
| 8899 | // may prevent dual-issue. |
| 8900 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i-1].rt1) & 31); |
| 8901 | wont_dirty_i |= 1u << (get_rreg(rregmap_i, dops[i-1].rt2) & 31); |
| 8902 | } |
| 8903 | // Save it |
| 8904 | will_dirty[i]=will_dirty_i; |
| 8905 | wont_dirty[i]=wont_dirty_i; |
| 8906 | // Mark registers that won't be dirtied as not dirty |
| 8907 | if(wr) { |
| 8908 | regs[i].dirty|=will_dirty_i; |
| 8909 | #ifndef DESTRUCTIVE_WRITEBACK |
| 8910 | regs[i].dirty&=wont_dirty_i; |
| 8911 | if(dops[i].is_jump) |
| 8912 | { |
| 8913 | if (i < iend-1 && !dops[i].is_ujump) { |
| 8914 | for(r=0;r<HOST_REGS;r++) { |
| 8915 | if(r!=EXCLUDE_REG) { |
| 8916 | if(regs[i].regmap[r]==regmap_pre[i+2][r]) { |
| 8917 | regs[i+2].wasdirty&=wont_dirty_i|~(1<<r); |
| 8918 | }else {/*printf("i: %x (%d) mismatch(+2): %d\n",start+i*4,i,r);assert(!((wont_dirty_i>>r)&1));*/} |
| 8919 | } |
| 8920 | } |
| 8921 | } |
| 8922 | } |
| 8923 | else |
| 8924 | { |
| 8925 | if(i<iend) { |
| 8926 | for(r=0;r<HOST_REGS;r++) { |
| 8927 | if(r!=EXCLUDE_REG) { |
| 8928 | if(regs[i].regmap[r]==regmap_pre[i+1][r]) { |
| 8929 | regs[i+1].wasdirty&=wont_dirty_i|~(1<<r); |
| 8930 | }else {/*printf("i: %x (%d) mismatch(+1): %d\n",start+i*4,i,r);assert(!((wont_dirty_i>>r)&1));*/} |
| 8931 | } |
| 8932 | } |
| 8933 | } |
| 8934 | } |
| 8935 | #endif |
| 8936 | } |
| 8937 | // Deal with changed mappings |
| 8938 | temp_will_dirty=will_dirty_i; |
| 8939 | temp_wont_dirty=wont_dirty_i; |
| 8940 | for(r=0;r<HOST_REGS;r++) { |
| 8941 | if(r!=EXCLUDE_REG) { |
| 8942 | int nr; |
| 8943 | if(regs[i].regmap[r]==regmap_pre[i][r]) { |
| 8944 | if(wr) { |
| 8945 | #ifndef DESTRUCTIVE_WRITEBACK |
| 8946 | regs[i].wasdirty&=wont_dirty_i|~(1<<r); |
| 8947 | #endif |
| 8948 | regs[i].wasdirty|=will_dirty_i&(1<<r); |
| 8949 | } |
| 8950 | } |
| 8951 | else if(regmap_pre[i][r]>=0&&(nr=get_rreg(rregmap_i,regmap_pre[i][r]))>=0) { |
| 8952 | // Register moved to a different register |
| 8953 | will_dirty_i&=~(1<<r); |
| 8954 | wont_dirty_i&=~(1<<r); |
| 8955 | will_dirty_i|=((temp_will_dirty>>nr)&1)<<r; |
| 8956 | wont_dirty_i|=((temp_wont_dirty>>nr)&1)<<r; |
| 8957 | if(wr) { |
| 8958 | #ifndef DESTRUCTIVE_WRITEBACK |
| 8959 | regs[i].wasdirty&=wont_dirty_i|~(1<<r); |
| 8960 | #endif |
| 8961 | regs[i].wasdirty|=will_dirty_i&(1<<r); |
| 8962 | } |
| 8963 | } |
| 8964 | else { |
| 8965 | will_dirty_i&=~(1<<r); |
| 8966 | wont_dirty_i&=~(1<<r); |
| 8967 | if(regmap_pre[i][r]>0 && regmap_pre[i][r]<34) { |
| 8968 | will_dirty_i|=((unneeded_reg[i]>>regmap_pre[i][r])&1)<<r; |
| 8969 | wont_dirty_i|=((unneeded_reg[i]>>regmap_pre[i][r])&1)<<r; |
| 8970 | } else { |
| 8971 | wont_dirty_i|=1<<r; |
| 8972 | /*printf("i: %x (%d) mismatch: %d\n",start+i*4,i,r);assert(!((will_dirty>>r)&1));*/ |
| 8973 | } |
| 8974 | } |
| 8975 | } |
| 8976 | } |
| 8977 | } |
| 8978 | } |
| 8979 | |
| 8980 | static noinline void pass10_expire_blocks(void) |
| 8981 | { |
| 8982 | int i, end; |
| 8983 | end = (((out-ndrc->translation_cache)>>(TARGET_SIZE_2-16)) + 16384) & 65535; |
| 8984 | while (expirep != end) |
| 8985 | { |
| 8986 | int shift=TARGET_SIZE_2-3; // Divide into 8 blocks |
| 8987 | uintptr_t base_offs = ((uintptr_t)(expirep >> 13) << shift); // Base offset of this block |
| 8988 | uintptr_t base_offs_s = base_offs >> shift; |
| 8989 | inv_debug("EXP: Phase %d\n",expirep); |
| 8990 | switch((expirep>>11)&3) |
| 8991 | { |
| 8992 | case 0: |
| 8993 | // Clear jump_in and jump_dirty |
| 8994 | ll_remove_matching_addrs(jump_in+(expirep&2047),base_offs_s,shift); |
| 8995 | ll_remove_matching_addrs(jump_dirty+(expirep&2047),base_offs_s,shift); |
| 8996 | ll_remove_matching_addrs(jump_in+2048+(expirep&2047),base_offs_s,shift); |
| 8997 | ll_remove_matching_addrs(jump_dirty+2048+(expirep&2047),base_offs_s,shift); |
| 8998 | break; |
| 8999 | case 1: |
| 9000 | // Clear pointers |
| 9001 | ll_kill_pointers(jump_out[expirep&2047],base_offs_s,shift); |
| 9002 | ll_kill_pointers(jump_out[(expirep&2047)+2048],base_offs_s,shift); |
| 9003 | break; |
| 9004 | case 2: |
| 9005 | // Clear hash table |
| 9006 | for(i=0;i<32;i++) { |
| 9007 | struct ht_entry *ht_bin = &hash_table[((expirep&2047)<<5)+i]; |
| 9008 | uintptr_t o1 = (u_char *)ht_bin->tcaddr[1] - ndrc->translation_cache; |
| 9009 | uintptr_t o2 = o1 - MAX_OUTPUT_BLOCK_SIZE; |
| 9010 | if ((o1 >> shift) == base_offs_s || (o2 >> shift) == base_offs_s) { |
| 9011 | inv_debug("EXP: Remove hash %x -> %p\n",ht_bin->vaddr[1],ht_bin->tcaddr[1]); |
| 9012 | ht_bin->vaddr[1] = -1; |
| 9013 | ht_bin->tcaddr[1] = NULL; |
| 9014 | } |
| 9015 | o1 = (u_char *)ht_bin->tcaddr[0] - ndrc->translation_cache; |
| 9016 | o2 = o1 - MAX_OUTPUT_BLOCK_SIZE; |
| 9017 | if ((o1 >> shift) == base_offs_s || (o2 >> shift) == base_offs_s) { |
| 9018 | inv_debug("EXP: Remove hash %x -> %p\n",ht_bin->vaddr[0],ht_bin->tcaddr[0]); |
| 9019 | ht_bin->vaddr[0] = ht_bin->vaddr[1]; |
| 9020 | ht_bin->tcaddr[0] = ht_bin->tcaddr[1]; |
| 9021 | ht_bin->vaddr[1] = -1; |
| 9022 | ht_bin->tcaddr[1] = NULL; |
| 9023 | } |
| 9024 | } |
| 9025 | break; |
| 9026 | case 3: |
| 9027 | // Clear jump_out |
| 9028 | if((expirep&2047)==0) |
| 9029 | do_clear_cache(); |
| 9030 | ll_remove_matching_addrs(jump_out+(expirep&2047),base_offs_s,shift); |
| 9031 | ll_remove_matching_addrs(jump_out+2048+(expirep&2047),base_offs_s,shift); |
| 9032 | break; |
| 9033 | } |
| 9034 | expirep=(expirep+1)&65535; |
| 9035 | } |
| 9036 | } |
| 9037 | |
| 9038 | int new_recompile_block(u_int addr) |
| 9039 | { |
| 9040 | u_int pagelimit = 0; |
| 9041 | u_int state_rflags = 0; |
| 9042 | int i; |
| 9043 | |
| 9044 | assem_debug("NOTCOMPILED: addr = %x -> %p\n", addr, out); |
| 9045 | |
| 9046 | // this is just for speculation |
| 9047 | for (i = 1; i < 32; i++) { |
| 9048 | if ((psxRegs.GPR.r[i] & 0xffff0000) == 0x1f800000) |
| 9049 | state_rflags |= 1 << i; |
| 9050 | } |
| 9051 | |
| 9052 | start = (u_int)addr&~3; |
| 9053 | //assert(((u_int)addr&1)==0); // start-in-delay-slot flag |
| 9054 | new_dynarec_did_compile=1; |
| 9055 | if (Config.HLE && start == 0x80001000) // hlecall |
| 9056 | { |
| 9057 | // XXX: is this enough? Maybe check hleSoftCall? |
| 9058 | void *beginning=start_block(); |
| 9059 | u_int page=get_page(start); |
| 9060 | |
| 9061 | invalid_code[start>>12]=0; |
| 9062 | emit_movimm(start,0); |
| 9063 | emit_writeword(0,&pcaddr); |
| 9064 | emit_far_jump(new_dyna_leave); |
| 9065 | literal_pool(0); |
| 9066 | end_block(beginning); |
| 9067 | ll_add_flags(jump_in+page,start,state_rflags,(void *)beginning); |
| 9068 | return 0; |
| 9069 | } |
| 9070 | else if (f1_hack && hack_addr == 0) { |
| 9071 | void *beginning = start_block(); |
| 9072 | u_int page = get_page(start); |
| 9073 | emit_movimm(start, 0); |
| 9074 | emit_writeword(0, &hack_addr); |
| 9075 | emit_readword(&psxRegs.GPR.n.sp, 0); |
| 9076 | emit_readptr(&mem_rtab, 1); |
| 9077 | emit_shrimm(0, 12, 2); |
| 9078 | emit_readptr_dualindexedx_ptrlen(1, 2, 1); |
| 9079 | emit_addimm(0, 0x18, 0); |
| 9080 | emit_adds_ptr(1, 1, 1); |
| 9081 | emit_ldr_dualindexed(1, 0, 0); |
| 9082 | emit_writeword(0, &psxRegs.GPR.r[26]); // lw k0, 0x18(sp) |
| 9083 | emit_far_call(get_addr_ht); |
| 9084 | emit_jmpreg(0); // jr k0 |
| 9085 | literal_pool(0); |
| 9086 | end_block(beginning); |
| 9087 | |
| 9088 | ll_add_flags(jump_in + page, start, state_rflags, beginning); |
| 9089 | SysPrintf("F1 hack to %08x\n", start); |
| 9090 | return 0; |
| 9091 | } |
| 9092 | |
| 9093 | cycle_multiplier_active = cycle_multiplier_override && cycle_multiplier == CYCLE_MULT_DEFAULT |
| 9094 | ? cycle_multiplier_override : cycle_multiplier; |
| 9095 | |
| 9096 | source = get_source_start(start, &pagelimit); |
| 9097 | if (source == NULL) { |
| 9098 | if (addr != hack_addr) { |
| 9099 | SysPrintf("Compile at bogus memory address: %08x\n", addr); |
| 9100 | hack_addr = addr; |
| 9101 | } |
| 9102 | //abort(); |
| 9103 | return -1; |
| 9104 | } |
| 9105 | |
| 9106 | /* Pass 1: disassemble */ |
| 9107 | /* Pass 2: register dependencies, branch targets */ |
| 9108 | /* Pass 3: register allocation */ |
| 9109 | /* Pass 4: branch dependencies */ |
| 9110 | /* Pass 5: pre-alloc */ |
| 9111 | /* Pass 6: optimize clean/dirty state */ |
| 9112 | /* Pass 7: flag 32-bit registers */ |
| 9113 | /* Pass 8: assembly */ |
| 9114 | /* Pass 9: linker */ |
| 9115 | /* Pass 10: garbage collection / free memory */ |
| 9116 | |
| 9117 | /* Pass 1 disassembly */ |
| 9118 | |
| 9119 | pass1_disassemble(pagelimit); |
| 9120 | |
| 9121 | int clear_hack_addr = apply_hacks(); |
| 9122 | |
| 9123 | /* Pass 2 - Register dependencies and branch targets */ |
| 9124 | |
| 9125 | pass2_unneeded_regs(0,slen-1,0); |
| 9126 | |
| 9127 | /* Pass 3 - Register allocation */ |
| 9128 | |
| 9129 | pass3_register_alloc(addr); |
| 9130 | |
| 9131 | /* Pass 4 - Cull unused host registers */ |
| 9132 | |
| 9133 | pass4_cull_unused_regs(); |
| 9134 | |
| 9135 | /* Pass 5 - Pre-allocate registers */ |
| 9136 | |
| 9137 | pass5a_preallocate1(); |
| 9138 | pass5b_preallocate2(); |
| 9139 | |
| 9140 | /* Pass 6 - Optimize clean/dirty state */ |
| 9141 | pass6_clean_registers(0, slen-1, 1); |
| 9142 | |
| 9143 | /* Pass 7 - Identify 32-bit registers */ |
| 9144 | for (i=slen-1;i>=0;i--) |
| 9145 | { |
| 9146 | if(dops[i].itype==CJUMP||dops[i].itype==SJUMP) |
| 9147 | { |
| 9148 | // Conditional branch |
| 9149 | if((source[i]>>16)!=0x1000&&i<slen-2) { |
| 9150 | // Mark this address as a branch target since it may be called |
| 9151 | // upon return from interrupt |
| 9152 | dops[i+2].bt=1; |
| 9153 | } |
| 9154 | } |
| 9155 | } |
| 9156 | |
| 9157 | if(dops[slen-1].itype==SPAN) { |
| 9158 | dops[slen-1].bt=1; // Mark as a branch target so instruction can restart after exception |
| 9159 | } |
| 9160 | |
| 9161 | /* Pass 8 - Assembly */ |
| 9162 | linkcount=0;stubcount=0; |
| 9163 | is_delayslot=0; |
| 9164 | u_int dirty_pre=0; |
| 9165 | void *beginning=start_block(); |
| 9166 | int ds = 0; |
| 9167 | if((u_int)addr&1) { |
| 9168 | ds=1; |
| 9169 | pagespan_ds(); |
| 9170 | } |
| 9171 | void *instr_addr0_override = NULL; |
| 9172 | |
| 9173 | if (start == 0x80030000) { |
| 9174 | // nasty hack for the fastbios thing |
| 9175 | // override block entry to this code |
| 9176 | instr_addr0_override = out; |
| 9177 | emit_movimm(start,0); |
| 9178 | // abuse io address var as a flag that we |
| 9179 | // have already returned here once |
| 9180 | emit_readword(&address,1); |
| 9181 | emit_writeword(0,&pcaddr); |
| 9182 | emit_writeword(0,&address); |
| 9183 | emit_cmp(0,1); |
| 9184 | #ifdef __aarch64__ |
| 9185 | emit_jeq(out + 4*2); |
| 9186 | emit_far_jump(new_dyna_leave); |
| 9187 | #else |
| 9188 | emit_jne(new_dyna_leave); |
| 9189 | #endif |
| 9190 | } |
| 9191 | for(i=0;i<slen;i++) |
| 9192 | { |
| 9193 | __builtin_prefetch(regs[i+1].regmap); |
| 9194 | check_regmap(regmap_pre[i]); |
| 9195 | check_regmap(regs[i].regmap_entry); |
| 9196 | check_regmap(regs[i].regmap); |
| 9197 | //if(ds) printf("ds: "); |
| 9198 | disassemble_inst(i); |
| 9199 | if(ds) { |
| 9200 | ds=0; // Skip delay slot |
| 9201 | if(dops[i].bt) assem_debug("OOPS - branch into delay slot\n"); |
| 9202 | instr_addr[i] = NULL; |
| 9203 | } else { |
| 9204 | speculate_register_values(i); |
| 9205 | #ifndef DESTRUCTIVE_WRITEBACK |
| 9206 | if (i < 2 || !dops[i-2].is_ujump) |
| 9207 | { |
| 9208 | wb_valid(regmap_pre[i],regs[i].regmap_entry,dirty_pre,regs[i].wasdirty,unneeded_reg[i]); |
| 9209 | } |
| 9210 | if((dops[i].itype==CJUMP||dops[i].itype==SJUMP)) { |
| 9211 | dirty_pre=branch_regs[i].dirty; |
| 9212 | }else{ |
| 9213 | dirty_pre=regs[i].dirty; |
| 9214 | } |
| 9215 | #endif |
| 9216 | // write back |
| 9217 | if (i < 2 || !dops[i-2].is_ujump) |
| 9218 | { |
| 9219 | wb_invalidate(regmap_pre[i],regs[i].regmap_entry,regs[i].wasdirty,unneeded_reg[i]); |
| 9220 | loop_preload(regmap_pre[i],regs[i].regmap_entry); |
| 9221 | } |
| 9222 | // branch target entry point |
| 9223 | instr_addr[i] = out; |
| 9224 | assem_debug("<->\n"); |
| 9225 | drc_dbg_emit_do_cmp(i, ccadj[i]); |
| 9226 | if (clear_hack_addr) { |
| 9227 | emit_movimm(0, 0); |
| 9228 | emit_writeword(0, &hack_addr); |
| 9229 | clear_hack_addr = 0; |
| 9230 | } |
| 9231 | |
| 9232 | // load regs |
| 9233 | if(regs[i].regmap_entry[HOST_CCREG]==CCREG&®s[i].regmap[HOST_CCREG]!=CCREG) |
| 9234 | wb_register(CCREG,regs[i].regmap_entry,regs[i].wasdirty); |
| 9235 | load_regs(regs[i].regmap_entry,regs[i].regmap,dops[i].rs1,dops[i].rs2); |
| 9236 | address_generation(i,®s[i],regs[i].regmap_entry); |
| 9237 | load_consts(regmap_pre[i],regs[i].regmap,i); |
| 9238 | if(dops[i].is_jump) |
| 9239 | { |
| 9240 | // Load the delay slot registers if necessary |
| 9241 | if(dops[i+1].rs1!=dops[i].rs1&&dops[i+1].rs1!=dops[i].rs2&&(dops[i+1].rs1!=dops[i].rt1||dops[i].rt1==0)) |
| 9242 | load_regs(regs[i].regmap_entry,regs[i].regmap,dops[i+1].rs1,dops[i+1].rs1); |
| 9243 | if(dops[i+1].rs2!=dops[i+1].rs1&&dops[i+1].rs2!=dops[i].rs1&&dops[i+1].rs2!=dops[i].rs2&&(dops[i+1].rs2!=dops[i].rt1||dops[i].rt1==0)) |
| 9244 | load_regs(regs[i].regmap_entry,regs[i].regmap,dops[i+1].rs2,dops[i+1].rs2); |
| 9245 | if (ram_offset && (dops[i+1].is_load || dops[i+1].is_store)) |
| 9246 | load_reg(regs[i].regmap_entry,regs[i].regmap,ROREG); |
| 9247 | if (dops[i+1].is_store) |
| 9248 | load_reg(regs[i].regmap_entry,regs[i].regmap,INVCP); |
| 9249 | } |
| 9250 | else if(i+1<slen) |
| 9251 | { |
| 9252 | // Preload registers for following instruction |
| 9253 | if(dops[i+1].rs1!=dops[i].rs1&&dops[i+1].rs1!=dops[i].rs2) |
| 9254 | if(dops[i+1].rs1!=dops[i].rt1&&dops[i+1].rs1!=dops[i].rt2) |
| 9255 | load_regs(regs[i].regmap_entry,regs[i].regmap,dops[i+1].rs1,dops[i+1].rs1); |
| 9256 | if(dops[i+1].rs2!=dops[i+1].rs1&&dops[i+1].rs2!=dops[i].rs1&&dops[i+1].rs2!=dops[i].rs2) |
| 9257 | if(dops[i+1].rs2!=dops[i].rt1&&dops[i+1].rs2!=dops[i].rt2) |
| 9258 | load_regs(regs[i].regmap_entry,regs[i].regmap,dops[i+1].rs2,dops[i+1].rs2); |
| 9259 | } |
| 9260 | // TODO: if(is_ooo(i)) address_generation(i+1); |
| 9261 | if (!dops[i].is_jump || dops[i].itype == CJUMP) |
| 9262 | load_reg(regs[i].regmap_entry,regs[i].regmap,CCREG); |
| 9263 | if (ram_offset && (dops[i].is_load || dops[i].is_store)) |
| 9264 | load_reg(regs[i].regmap_entry,regs[i].regmap,ROREG); |
| 9265 | if (dops[i].is_store) |
| 9266 | load_reg(regs[i].regmap_entry,regs[i].regmap,INVCP); |
| 9267 | |
| 9268 | ds = assemble(i, ®s[i], ccadj[i]); |
| 9269 | |
| 9270 | if (dops[i].is_ujump) |
| 9271 | literal_pool(1024); |
| 9272 | else |
| 9273 | literal_pool_jumpover(256); |
| 9274 | } |
| 9275 | } |
| 9276 | |
| 9277 | assert(slen > 0); |
| 9278 | if (slen > 0 && dops[slen-1].itype == INTCALL) { |
| 9279 | // no ending needed for this block since INTCALL never returns |
| 9280 | } |
| 9281 | // If the block did not end with an unconditional branch, |
| 9282 | // add a jump to the next instruction. |
| 9283 | else if (i > 1) { |
| 9284 | if (!dops[i-2].is_ujump && dops[i-1].itype != SPAN) { |
| 9285 | assert(!dops[i-1].is_jump); |
| 9286 | assert(i==slen); |
| 9287 | if(dops[i-2].itype!=CJUMP&&dops[i-2].itype!=SJUMP) { |
| 9288 | store_regs_bt(regs[i-1].regmap,regs[i-1].dirty,start+i*4); |
| 9289 | if(regs[i-1].regmap[HOST_CCREG]!=CCREG) |
| 9290 | emit_loadreg(CCREG,HOST_CCREG); |
| 9291 | emit_addimm(HOST_CCREG, ccadj[i-1] + CLOCK_ADJUST(1), HOST_CCREG); |
| 9292 | } |
| 9293 | else |
| 9294 | { |
| 9295 | store_regs_bt(branch_regs[i-2].regmap,branch_regs[i-2].dirty,start+i*4); |
| 9296 | assert(branch_regs[i-2].regmap[HOST_CCREG]==CCREG); |
| 9297 | } |
| 9298 | add_to_linker(out,start+i*4,0); |
| 9299 | emit_jmp(0); |
| 9300 | } |
| 9301 | } |
| 9302 | else |
| 9303 | { |
| 9304 | assert(i>0); |
| 9305 | assert(!dops[i-1].is_jump); |
| 9306 | store_regs_bt(regs[i-1].regmap,regs[i-1].dirty,start+i*4); |
| 9307 | if(regs[i-1].regmap[HOST_CCREG]!=CCREG) |
| 9308 | emit_loadreg(CCREG,HOST_CCREG); |
| 9309 | emit_addimm(HOST_CCREG, ccadj[i-1] + CLOCK_ADJUST(1), HOST_CCREG); |
| 9310 | add_to_linker(out,start+i*4,0); |
| 9311 | emit_jmp(0); |
| 9312 | } |
| 9313 | |
| 9314 | // TODO: delay slot stubs? |
| 9315 | // Stubs |
| 9316 | for(i=0;i<stubcount;i++) |
| 9317 | { |
| 9318 | switch(stubs[i].type) |
| 9319 | { |
| 9320 | case LOADB_STUB: |
| 9321 | case LOADH_STUB: |
| 9322 | case LOADW_STUB: |
| 9323 | case LOADD_STUB: |
| 9324 | case LOADBU_STUB: |
| 9325 | case LOADHU_STUB: |
| 9326 | do_readstub(i);break; |
| 9327 | case STOREB_STUB: |
| 9328 | case STOREH_STUB: |
| 9329 | case STOREW_STUB: |
| 9330 | case STORED_STUB: |
| 9331 | do_writestub(i);break; |
| 9332 | case CC_STUB: |
| 9333 | do_ccstub(i);break; |
| 9334 | case INVCODE_STUB: |
| 9335 | do_invstub(i);break; |
| 9336 | case FP_STUB: |
| 9337 | do_cop1stub(i);break; |
| 9338 | case STORELR_STUB: |
| 9339 | do_unalignedwritestub(i);break; |
| 9340 | } |
| 9341 | } |
| 9342 | |
| 9343 | if (instr_addr0_override) |
| 9344 | instr_addr[0] = instr_addr0_override; |
| 9345 | |
| 9346 | /* Pass 9 - Linker */ |
| 9347 | for(i=0;i<linkcount;i++) |
| 9348 | { |
| 9349 | assem_debug("%p -> %8x\n",link_addr[i].addr,link_addr[i].target); |
| 9350 | literal_pool(64); |
| 9351 | if (!link_addr[i].ext) |
| 9352 | { |
| 9353 | void *stub = out; |
| 9354 | void *addr = check_addr(link_addr[i].target); |
| 9355 | emit_extjump(link_addr[i].addr, link_addr[i].target); |
| 9356 | if (addr) { |
| 9357 | set_jump_target(link_addr[i].addr, addr); |
| 9358 | add_jump_out(link_addr[i].target,stub); |
| 9359 | } |
| 9360 | else |
| 9361 | set_jump_target(link_addr[i].addr, stub); |
| 9362 | } |
| 9363 | else |
| 9364 | { |
| 9365 | // Internal branch |
| 9366 | int target=(link_addr[i].target-start)>>2; |
| 9367 | assert(target>=0&&target<slen); |
| 9368 | assert(instr_addr[target]); |
| 9369 | //#ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 9370 | //set_jump_target_fillslot(link_addr[i].addr,instr_addr[target],link_addr[i].ext>>1); |
| 9371 | //#else |
| 9372 | set_jump_target(link_addr[i].addr, instr_addr[target]); |
| 9373 | //#endif |
| 9374 | } |
| 9375 | } |
| 9376 | |
| 9377 | u_int source_len = slen*4; |
| 9378 | if (dops[slen-1].itype == INTCALL && source_len > 4) |
| 9379 | // no need to treat the last instruction as compiled |
| 9380 | // as interpreter fully handles it |
| 9381 | source_len -= 4; |
| 9382 | |
| 9383 | if ((u_char *)copy + source_len > (u_char *)shadow + sizeof(shadow)) |
| 9384 | copy = shadow; |
| 9385 | |
| 9386 | // External Branch Targets (jump_in) |
| 9387 | for(i=0;i<slen;i++) |
| 9388 | { |
| 9389 | if(dops[i].bt||i==0) |
| 9390 | { |
| 9391 | if(instr_addr[i]) // TODO - delay slots (=null) |
| 9392 | { |
| 9393 | u_int vaddr=start+i*4; |
| 9394 | u_int page=get_page(vaddr); |
| 9395 | u_int vpage=get_vpage(vaddr); |
| 9396 | literal_pool(256); |
| 9397 | { |
| 9398 | assem_debug("%p (%d) <- %8x\n",instr_addr[i],i,start+i*4); |
| 9399 | assem_debug("jump_in: %x\n",start+i*4); |
| 9400 | ll_add(jump_dirty+vpage,vaddr,out); |
| 9401 | void *entry_point = do_dirty_stub(i, source_len); |
| 9402 | ll_add_flags(jump_in+page,vaddr,state_rflags,entry_point); |
| 9403 | // If there was an existing entry in the hash table, |
| 9404 | // replace it with the new address. |
| 9405 | // Don't add new entries. We'll insert the |
| 9406 | // ones that actually get used in check_addr(). |
| 9407 | struct ht_entry *ht_bin = hash_table_get(vaddr); |
| 9408 | if (ht_bin->vaddr[0] == vaddr) |
| 9409 | ht_bin->tcaddr[0] = entry_point; |
| 9410 | if (ht_bin->vaddr[1] == vaddr) |
| 9411 | ht_bin->tcaddr[1] = entry_point; |
| 9412 | } |
| 9413 | } |
| 9414 | } |
| 9415 | } |
| 9416 | // Write out the literal pool if necessary |
| 9417 | literal_pool(0); |
| 9418 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 9419 | // Align code |
| 9420 | if(((u_int)out)&7) emit_addnop(13); |
| 9421 | #endif |
| 9422 | assert(out - (u_char *)beginning < MAX_OUTPUT_BLOCK_SIZE); |
| 9423 | //printf("shadow buffer: %p-%p\n",copy,(u_char *)copy+slen*4); |
| 9424 | memcpy(copy, source, source_len); |
| 9425 | copy += source_len; |
| 9426 | |
| 9427 | end_block(beginning); |
| 9428 | |
| 9429 | // If we're within 256K of the end of the buffer, |
| 9430 | // start over from the beginning. (Is 256K enough?) |
| 9431 | if (out > ndrc->translation_cache + sizeof(ndrc->translation_cache) - MAX_OUTPUT_BLOCK_SIZE) |
| 9432 | out = ndrc->translation_cache; |
| 9433 | |
| 9434 | // Trap writes to any of the pages we compiled |
| 9435 | for(i=start>>12;i<=(start+slen*4)>>12;i++) { |
| 9436 | invalid_code[i]=0; |
| 9437 | } |
| 9438 | inv_code_start=inv_code_end=~0; |
| 9439 | |
| 9440 | // for PCSX we need to mark all mirrors too |
| 9441 | if(get_page(start)<(RAM_SIZE>>12)) |
| 9442 | for(i=start>>12;i<=(start+slen*4)>>12;i++) |
| 9443 | invalid_code[((u_int)0x00000000>>12)|(i&0x1ff)]= |
| 9444 | invalid_code[((u_int)0x80000000>>12)|(i&0x1ff)]= |
| 9445 | invalid_code[((u_int)0xa0000000>>12)|(i&0x1ff)]=0; |
| 9446 | |
| 9447 | /* Pass 10 - Free memory by expiring oldest blocks */ |
| 9448 | |
| 9449 | pass10_expire_blocks(); |
| 9450 | |
| 9451 | #ifdef ASSEM_PRINT |
| 9452 | fflush(stdout); |
| 9453 | #endif |
| 9454 | return 0; |
| 9455 | } |
| 9456 | |
| 9457 | // vim:shiftwidth=2:expandtab |