| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus/PCSX - assem_arm.c * |
| 3 | * Copyright (C) 2009-2011 Ari64 * |
| 4 | * Copyright (C) 2010-2021 GraÅžvydas "notaz" Ignotas * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the * |
| 18 | * Free Software Foundation, Inc., * |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 20 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 21 | |
| 22 | #define FLAGLESS |
| 23 | #include "../gte.h" |
| 24 | #undef FLAGLESS |
| 25 | #include "../gte_arm.h" |
| 26 | #include "../gte_neon.h" |
| 27 | #include "pcnt.h" |
| 28 | #include "arm_features.h" |
| 29 | |
| 30 | #ifdef DRC_DBG |
| 31 | #pragma GCC diagnostic ignored "-Wunused-function" |
| 32 | #pragma GCC diagnostic ignored "-Wunused-variable" |
| 33 | #pragma GCC diagnostic ignored "-Wunused-but-set-variable" |
| 34 | #endif |
| 35 | |
| 36 | void indirect_jump_indexed(); |
| 37 | void indirect_jump(); |
| 38 | void do_interrupt(); |
| 39 | void jump_vaddr_r0(); |
| 40 | void jump_vaddr_r1(); |
| 41 | void jump_vaddr_r2(); |
| 42 | void jump_vaddr_r3(); |
| 43 | void jump_vaddr_r4(); |
| 44 | void jump_vaddr_r5(); |
| 45 | void jump_vaddr_r6(); |
| 46 | void jump_vaddr_r7(); |
| 47 | void jump_vaddr_r8(); |
| 48 | void jump_vaddr_r9(); |
| 49 | void jump_vaddr_r10(); |
| 50 | void jump_vaddr_r12(); |
| 51 | |
| 52 | void * const jump_vaddr_reg[16] = { |
| 53 | jump_vaddr_r0, |
| 54 | jump_vaddr_r1, |
| 55 | jump_vaddr_r2, |
| 56 | jump_vaddr_r3, |
| 57 | jump_vaddr_r4, |
| 58 | jump_vaddr_r5, |
| 59 | jump_vaddr_r6, |
| 60 | jump_vaddr_r7, |
| 61 | jump_vaddr_r8, |
| 62 | jump_vaddr_r9, |
| 63 | jump_vaddr_r10, |
| 64 | 0, |
| 65 | jump_vaddr_r12, |
| 66 | 0, |
| 67 | 0, |
| 68 | 0 |
| 69 | }; |
| 70 | |
| 71 | void invalidate_addr_r0(); |
| 72 | void invalidate_addr_r1(); |
| 73 | void invalidate_addr_r2(); |
| 74 | void invalidate_addr_r3(); |
| 75 | void invalidate_addr_r4(); |
| 76 | void invalidate_addr_r5(); |
| 77 | void invalidate_addr_r6(); |
| 78 | void invalidate_addr_r7(); |
| 79 | void invalidate_addr_r8(); |
| 80 | void invalidate_addr_r9(); |
| 81 | void invalidate_addr_r10(); |
| 82 | void invalidate_addr_r12(); |
| 83 | |
| 84 | const u_int invalidate_addr_reg[16] = { |
| 85 | (int)invalidate_addr_r0, |
| 86 | (int)invalidate_addr_r1, |
| 87 | (int)invalidate_addr_r2, |
| 88 | (int)invalidate_addr_r3, |
| 89 | (int)invalidate_addr_r4, |
| 90 | (int)invalidate_addr_r5, |
| 91 | (int)invalidate_addr_r6, |
| 92 | (int)invalidate_addr_r7, |
| 93 | (int)invalidate_addr_r8, |
| 94 | (int)invalidate_addr_r9, |
| 95 | (int)invalidate_addr_r10, |
| 96 | 0, |
| 97 | (int)invalidate_addr_r12, |
| 98 | 0, |
| 99 | 0, |
| 100 | 0}; |
| 101 | |
| 102 | /* Linker */ |
| 103 | |
| 104 | static void set_jump_target(void *addr, void *target_) |
| 105 | { |
| 106 | u_int target = (u_int)target_; |
| 107 | u_char *ptr = addr; |
| 108 | u_int *ptr2=(u_int *)ptr; |
| 109 | if(ptr[3]==0xe2) { |
| 110 | assert((target-(u_int)ptr2-8)<1024); |
| 111 | assert(((uintptr_t)addr&3)==0); |
| 112 | assert((target&3)==0); |
| 113 | *ptr2=(*ptr2&0xFFFFF000)|((target-(u_int)ptr2-8)>>2)|0xF00; |
| 114 | //printf("target=%x addr=%p insn=%x\n",target,addr,*ptr2); |
| 115 | } |
| 116 | else if(ptr[3]==0x72) { |
| 117 | // generated by emit_jno_unlikely |
| 118 | if((target-(u_int)ptr2-8)<1024) { |
| 119 | assert(((uintptr_t)addr&3)==0); |
| 120 | assert((target&3)==0); |
| 121 | *ptr2=(*ptr2&0xFFFFF000)|((target-(u_int)ptr2-8)>>2)|0xF00; |
| 122 | } |
| 123 | else if((target-(u_int)ptr2-8)<4096&&!((target-(u_int)ptr2-8)&15)) { |
| 124 | assert(((uintptr_t)addr&3)==0); |
| 125 | assert((target&3)==0); |
| 126 | *ptr2=(*ptr2&0xFFFFF000)|((target-(u_int)ptr2-8)>>4)|0xE00; |
| 127 | } |
| 128 | else *ptr2=(0x7A000000)|(((target-(u_int)ptr2-8)<<6)>>8); |
| 129 | } |
| 130 | else { |
| 131 | assert((ptr[3]&0x0e)==0xa); |
| 132 | *ptr2=(*ptr2&0xFF000000)|(((target-(u_int)ptr2-8)<<6)>>8); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | // This optionally copies the instruction from the target of the branch into |
| 137 | // the space before the branch. Works, but the difference in speed is |
| 138 | // usually insignificant. |
| 139 | #if 0 |
| 140 | static void set_jump_target_fillslot(int addr,u_int target,int copy) |
| 141 | { |
| 142 | u_char *ptr=(u_char *)addr; |
| 143 | u_int *ptr2=(u_int *)ptr; |
| 144 | assert(!copy||ptr2[-1]==0xe28dd000); |
| 145 | if(ptr[3]==0xe2) { |
| 146 | assert(!copy); |
| 147 | assert((target-(u_int)ptr2-8)<4096); |
| 148 | *ptr2=(*ptr2&0xFFFFF000)|(target-(u_int)ptr2-8); |
| 149 | } |
| 150 | else { |
| 151 | assert((ptr[3]&0x0e)==0xa); |
| 152 | u_int target_insn=*(u_int *)target; |
| 153 | if((target_insn&0x0e100000)==0) { // ALU, no immediate, no flags |
| 154 | copy=0; |
| 155 | } |
| 156 | if((target_insn&0x0c100000)==0x04100000) { // Load |
| 157 | copy=0; |
| 158 | } |
| 159 | if(target_insn&0x08000000) { |
| 160 | copy=0; |
| 161 | } |
| 162 | if(copy) { |
| 163 | ptr2[-1]=target_insn; |
| 164 | target+=4; |
| 165 | } |
| 166 | *ptr2=(*ptr2&0xFF000000)|(((target-(u_int)ptr2-8)<<6)>>8); |
| 167 | } |
| 168 | } |
| 169 | #endif |
| 170 | |
| 171 | /* Literal pool */ |
| 172 | static void add_literal(int addr,int val) |
| 173 | { |
| 174 | assert(literalcount<sizeof(literals)/sizeof(literals[0])); |
| 175 | literals[literalcount][0]=addr; |
| 176 | literals[literalcount][1]=val; |
| 177 | literalcount++; |
| 178 | } |
| 179 | |
| 180 | // from a pointer to external jump stub (which was produced by emit_extjump2) |
| 181 | // find where the jumping insn is |
| 182 | static void *find_extjump_insn(void *stub) |
| 183 | { |
| 184 | int *ptr=(int *)(stub+4); |
| 185 | assert((*ptr&0x0fff0000)==0x059f0000); // ldr rx, [pc, #ofs] |
| 186 | u_int offset=*ptr&0xfff; |
| 187 | void **l_ptr=(void *)ptr+offset+8; |
| 188 | return *l_ptr; |
| 189 | } |
| 190 | |
| 191 | // find where external branch is liked to using addr of it's stub: |
| 192 | // get address that insn one after stub loads (dyna_linker arg1), |
| 193 | // treat it as a pointer to branch insn, |
| 194 | // return addr where that branch jumps to |
| 195 | #if 0 |
| 196 | static void *get_pointer(void *stub) |
| 197 | { |
| 198 | //printf("get_pointer(%x)\n",(int)stub); |
| 199 | int *i_ptr=find_extjump_insn(stub); |
| 200 | assert((*i_ptr&0x0f000000)==0x0a000000); // b |
| 201 | return (u_char *)i_ptr+((*i_ptr<<8)>>6)+8; |
| 202 | } |
| 203 | #endif |
| 204 | |
| 205 | // Allocate a specific ARM register. |
| 206 | static void alloc_arm_reg(struct regstat *cur,int i,signed char reg,int hr) |
| 207 | { |
| 208 | int n; |
| 209 | int dirty=0; |
| 210 | |
| 211 | // see if it's already allocated (and dealloc it) |
| 212 | for(n=0;n<HOST_REGS;n++) |
| 213 | { |
| 214 | if(n!=EXCLUDE_REG&&cur->regmap[n]==reg) { |
| 215 | dirty=(cur->dirty>>n)&1; |
| 216 | cur->regmap[n]=-1; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | assert(n == hr || cur->regmap[hr] < 0 || !((cur->noevict >> hr) & 1)); |
| 221 | cur->regmap[hr] = reg; |
| 222 | cur->dirty &= ~(1 << hr); |
| 223 | cur->dirty |= dirty << hr; |
| 224 | cur->isconst &= ~(1u << hr); |
| 225 | cur->noevict |= 1u << hr; |
| 226 | } |
| 227 | |
| 228 | // Alloc cycle count into dedicated register |
| 229 | static void alloc_cc(struct regstat *cur, int i) |
| 230 | { |
| 231 | alloc_arm_reg(cur, i, CCREG, HOST_CCREG); |
| 232 | } |
| 233 | |
| 234 | static void alloc_cc_optional(struct regstat *cur, int i) |
| 235 | { |
| 236 | if (cur->regmap[HOST_CCREG] < 0) { |
| 237 | alloc_arm_reg(cur, i, CCREG, HOST_CCREG); |
| 238 | cur->noevict &= ~(1u << HOST_CCREG); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | /* Assembler */ |
| 243 | |
| 244 | static unused char regname[16][4] = { |
| 245 | "r0", |
| 246 | "r1", |
| 247 | "r2", |
| 248 | "r3", |
| 249 | "r4", |
| 250 | "r5", |
| 251 | "r6", |
| 252 | "r7", |
| 253 | "r8", |
| 254 | "r9", |
| 255 | "r10", |
| 256 | "fp", |
| 257 | "r12", |
| 258 | "sp", |
| 259 | "lr", |
| 260 | "pc"}; |
| 261 | |
| 262 | static void output_w32(u_int word) |
| 263 | { |
| 264 | *((u_int *)out)=word; |
| 265 | out+=4; |
| 266 | } |
| 267 | |
| 268 | static u_int rd_rn_rm(u_int rd, u_int rn, u_int rm) |
| 269 | { |
| 270 | assert(rd<16); |
| 271 | assert(rn<16); |
| 272 | assert(rm<16); |
| 273 | return((rn<<16)|(rd<<12)|rm); |
| 274 | } |
| 275 | |
| 276 | static u_int rd_rn_imm_shift(u_int rd, u_int rn, u_int imm, u_int shift) |
| 277 | { |
| 278 | assert(rd<16); |
| 279 | assert(rn<16); |
| 280 | assert(imm<256); |
| 281 | assert((shift&1)==0); |
| 282 | return((rn<<16)|(rd<<12)|(((32-shift)&30)<<7)|imm); |
| 283 | } |
| 284 | |
| 285 | static u_int genimm(u_int imm,u_int *encoded) |
| 286 | { |
| 287 | *encoded=0; |
| 288 | if(imm==0) return 1; |
| 289 | int i=32; |
| 290 | while(i>0) |
| 291 | { |
| 292 | if(imm<256) { |
| 293 | *encoded=((i&30)<<7)|imm; |
| 294 | return 1; |
| 295 | } |
| 296 | imm=(imm>>2)|(imm<<30);i-=2; |
| 297 | } |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static void genimm_checked(u_int imm,u_int *encoded) |
| 302 | { |
| 303 | u_int ret=genimm(imm,encoded); |
| 304 | assert(ret); |
| 305 | (void)ret; |
| 306 | } |
| 307 | |
| 308 | static u_int genjmp(u_int addr) |
| 309 | { |
| 310 | if (addr < 3) return 0; // a branch that will be patched later |
| 311 | int offset = addr-(int)out-8; |
| 312 | if (offset < -33554432 || offset >= 33554432) { |
| 313 | SysPrintf("genjmp: out of range: %08x\n", offset); |
| 314 | abort(); |
| 315 | return 0; |
| 316 | } |
| 317 | return ((u_int)offset>>2)&0xffffff; |
| 318 | } |
| 319 | |
| 320 | static unused void emit_breakpoint(void) |
| 321 | { |
| 322 | assem_debug("bkpt #0\n"); |
| 323 | //output_w32(0xe1200070); |
| 324 | output_w32(0xe7f001f0); |
| 325 | } |
| 326 | |
| 327 | static void emit_mov(int rs,int rt) |
| 328 | { |
| 329 | assem_debug("mov %s,%s\n",regname[rt],regname[rs]); |
| 330 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)); |
| 331 | } |
| 332 | |
| 333 | static void emit_movs(int rs,int rt) |
| 334 | { |
| 335 | assem_debug("movs %s,%s\n",regname[rt],regname[rs]); |
| 336 | output_w32(0xe1b00000|rd_rn_rm(rt,0,rs)); |
| 337 | } |
| 338 | |
| 339 | static void emit_add(int rs1,int rs2,int rt) |
| 340 | { |
| 341 | assem_debug("add %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 342 | output_w32(0xe0800000|rd_rn_rm(rt,rs1,rs2)); |
| 343 | } |
| 344 | |
| 345 | static void emit_adds(int rs1,int rs2,int rt) |
| 346 | { |
| 347 | assem_debug("adds %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 348 | output_w32(0xe0900000|rd_rn_rm(rt,rs1,rs2)); |
| 349 | } |
| 350 | #define emit_adds_ptr emit_adds |
| 351 | |
| 352 | static void emit_adcs(int rs1,int rs2,int rt) |
| 353 | { |
| 354 | assem_debug("adcs %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 355 | output_w32(0xe0b00000|rd_rn_rm(rt,rs1,rs2)); |
| 356 | } |
| 357 | |
| 358 | static void emit_neg(int rs, int rt) |
| 359 | { |
| 360 | assem_debug("rsb %s,%s,#0\n",regname[rt],regname[rs]); |
| 361 | output_w32(0xe2600000|rd_rn_rm(rt,rs,0)); |
| 362 | } |
| 363 | |
| 364 | static void emit_negs(int rs, int rt) |
| 365 | { |
| 366 | assem_debug("rsbs %s,%s,#0\n",regname[rt],regname[rs]); |
| 367 | output_w32(0xe2700000|rd_rn_rm(rt,rs,0)); |
| 368 | } |
| 369 | |
| 370 | static void emit_sub(int rs1,int rs2,int rt) |
| 371 | { |
| 372 | assem_debug("sub %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 373 | output_w32(0xe0400000|rd_rn_rm(rt,rs1,rs2)); |
| 374 | } |
| 375 | |
| 376 | static void emit_subs(int rs1,int rs2,int rt) |
| 377 | { |
| 378 | assem_debug("subs %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 379 | output_w32(0xe0500000|rd_rn_rm(rt,rs1,rs2)); |
| 380 | } |
| 381 | |
| 382 | static void emit_zeroreg(int rt) |
| 383 | { |
| 384 | assem_debug("mov %s,#0\n",regname[rt]); |
| 385 | output_w32(0xe3a00000|rd_rn_rm(rt,0,0)); |
| 386 | } |
| 387 | |
| 388 | static void emit_loadlp(u_int imm,u_int rt) |
| 389 | { |
| 390 | add_literal((int)out,imm); |
| 391 | assem_debug("ldr %s,pc+? [=%x]\n",regname[rt],imm); |
| 392 | output_w32(0xe5900000|rd_rn_rm(rt,15,0)); |
| 393 | } |
| 394 | |
| 395 | #ifdef HAVE_ARMV7 |
| 396 | static void emit_movw(u_int imm,u_int rt) |
| 397 | { |
| 398 | assert(imm<65536); |
| 399 | assem_debug("movw %s,#%d (0x%x)\n",regname[rt],imm,imm); |
| 400 | output_w32(0xe3000000|rd_rn_rm(rt,0,0)|(imm&0xfff)|((imm<<4)&0xf0000)); |
| 401 | } |
| 402 | |
| 403 | static void emit_movt(u_int imm,u_int rt) |
| 404 | { |
| 405 | assem_debug("movt %s,#%d (0x%x)\n",regname[rt],imm&0xffff0000,imm&0xffff0000); |
| 406 | output_w32(0xe3400000|rd_rn_rm(rt,0,0)|((imm>>16)&0xfff)|((imm>>12)&0xf0000)); |
| 407 | } |
| 408 | #endif |
| 409 | |
| 410 | static void emit_movimm(u_int imm,u_int rt) |
| 411 | { |
| 412 | u_int armval; |
| 413 | if(genimm(imm,&armval)) { |
| 414 | assem_debug("mov %s,#%d\n",regname[rt],imm); |
| 415 | output_w32(0xe3a00000|rd_rn_rm(rt,0,0)|armval); |
| 416 | }else if(genimm(~imm,&armval)) { |
| 417 | assem_debug("mvn %s,#%d\n",regname[rt],imm); |
| 418 | output_w32(0xe3e00000|rd_rn_rm(rt,0,0)|armval); |
| 419 | }else if(imm<65536) { |
| 420 | #ifndef HAVE_ARMV7 |
| 421 | assem_debug("mov %s,#%d\n",regname[rt],imm&0xFF00); |
| 422 | output_w32(0xe3a00000|rd_rn_imm_shift(rt,0,imm>>8,8)); |
| 423 | assem_debug("add %s,%s,#%d\n",regname[rt],regname[rt],imm&0xFF); |
| 424 | output_w32(0xe2800000|rd_rn_imm_shift(rt,rt,imm&0xff,0)); |
| 425 | #else |
| 426 | emit_movw(imm,rt); |
| 427 | #endif |
| 428 | }else{ |
| 429 | #ifndef HAVE_ARMV7 |
| 430 | emit_loadlp(imm,rt); |
| 431 | #else |
| 432 | emit_movw(imm&0x0000FFFF,rt); |
| 433 | emit_movt(imm&0xFFFF0000,rt); |
| 434 | #endif |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | static void emit_pcreladdr(u_int rt) |
| 439 | { |
| 440 | assem_debug("add %s,pc,#?\n",regname[rt]); |
| 441 | output_w32(0xe2800000|rd_rn_rm(rt,15,0)); |
| 442 | } |
| 443 | |
| 444 | static void emit_loadreg(int r, int hr) |
| 445 | { |
| 446 | assert(hr != EXCLUDE_REG); |
| 447 | if (r == 0) |
| 448 | emit_zeroreg(hr); |
| 449 | else { |
| 450 | void *addr; |
| 451 | switch (r) { |
| 452 | //case HIREG: addr = &hi; break; |
| 453 | //case LOREG: addr = &lo; break; |
| 454 | case CCREG: addr = &cycle_count; break; |
| 455 | case INVCP: addr = &invc_ptr; break; |
| 456 | case ROREG: addr = &ram_offset; break; |
| 457 | default: |
| 458 | assert(r < 34); |
| 459 | addr = &psxRegs.GPR.r[r]; |
| 460 | break; |
| 461 | } |
| 462 | u_int offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 463 | assert(offset<4096); |
| 464 | assem_debug("ldr %s,fp+%d # r%d\n",regname[hr],offset,r); |
| 465 | output_w32(0xe5900000|rd_rn_rm(hr,FP,0)|offset); |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | static void emit_storereg(int r, int hr) |
| 470 | { |
| 471 | assert(hr != EXCLUDE_REG); |
| 472 | int addr = (int)&psxRegs.GPR.r[r]; |
| 473 | switch (r) { |
| 474 | //case HIREG: addr = &hi; break; |
| 475 | //case LOREG: addr = &lo; break; |
| 476 | case CCREG: addr = (int)&cycle_count; break; |
| 477 | default: assert(r < 34); break; |
| 478 | } |
| 479 | u_int offset = addr-(u_int)&dynarec_local; |
| 480 | assert(offset<4096); |
| 481 | assem_debug("str %s,fp+%d # r%d\n",regname[hr],offset,r); |
| 482 | output_w32(0xe5800000|rd_rn_rm(hr,FP,0)|offset); |
| 483 | } |
| 484 | |
| 485 | static void emit_test(int rs, int rt) |
| 486 | { |
| 487 | assem_debug("tst %s,%s\n",regname[rs],regname[rt]); |
| 488 | output_w32(0xe1100000|rd_rn_rm(0,rs,rt)); |
| 489 | } |
| 490 | |
| 491 | static void emit_testimm(int rs,int imm) |
| 492 | { |
| 493 | u_int armval; |
| 494 | assem_debug("tst %s,#%d\n",regname[rs],imm); |
| 495 | genimm_checked(imm,&armval); |
| 496 | output_w32(0xe3100000|rd_rn_rm(0,rs,0)|armval); |
| 497 | } |
| 498 | |
| 499 | static void emit_testeqimm(int rs,int imm) |
| 500 | { |
| 501 | u_int armval; |
| 502 | assem_debug("tsteq %s,$%d\n",regname[rs],imm); |
| 503 | genimm_checked(imm,&armval); |
| 504 | output_w32(0x03100000|rd_rn_rm(0,rs,0)|armval); |
| 505 | } |
| 506 | |
| 507 | static void emit_not(int rs,int rt) |
| 508 | { |
| 509 | assem_debug("mvn %s,%s\n",regname[rt],regname[rs]); |
| 510 | output_w32(0xe1e00000|rd_rn_rm(rt,0,rs)); |
| 511 | } |
| 512 | |
| 513 | static void emit_mvneq(int rs,int rt) |
| 514 | { |
| 515 | assem_debug("mvneq %s,%s\n",regname[rt],regname[rs]); |
| 516 | output_w32(0x01e00000|rd_rn_rm(rt,0,rs)); |
| 517 | } |
| 518 | |
| 519 | static void emit_and(u_int rs1,u_int rs2,u_int rt) |
| 520 | { |
| 521 | assem_debug("and %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 522 | output_w32(0xe0000000|rd_rn_rm(rt,rs1,rs2)); |
| 523 | } |
| 524 | |
| 525 | static void emit_or(u_int rs1,u_int rs2,u_int rt) |
| 526 | { |
| 527 | assem_debug("orr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 528 | output_w32(0xe1800000|rd_rn_rm(rt,rs1,rs2)); |
| 529 | } |
| 530 | |
| 531 | static void emit_orrshl_imm(u_int rs,u_int imm,u_int rt) |
| 532 | { |
| 533 | assert(rs<16); |
| 534 | assert(rt<16); |
| 535 | assert(imm<32); |
| 536 | assem_debug("orr %s,%s,%s,lsl #%d\n",regname[rt],regname[rt],regname[rs],imm); |
| 537 | output_w32(0xe1800000|rd_rn_rm(rt,rt,rs)|(imm<<7)); |
| 538 | } |
| 539 | |
| 540 | static void emit_orrshr_imm(u_int rs,u_int imm,u_int rt) |
| 541 | { |
| 542 | assert(rs<16); |
| 543 | assert(rt<16); |
| 544 | assert(imm<32); |
| 545 | assem_debug("orr %s,%s,%s,lsr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
| 546 | output_w32(0xe1800020|rd_rn_rm(rt,rt,rs)|(imm<<7)); |
| 547 | } |
| 548 | |
| 549 | static void emit_xor(u_int rs1,u_int rs2,u_int rt) |
| 550 | { |
| 551 | assem_debug("eor %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 552 | output_w32(0xe0200000|rd_rn_rm(rt,rs1,rs2)); |
| 553 | } |
| 554 | |
| 555 | static void emit_xorsar_imm(u_int rs1,u_int rs2,u_int imm,u_int rt) |
| 556 | { |
| 557 | assem_debug("eor %s,%s,%s,asr #%d\n",regname[rt],regname[rs1],regname[rs2],imm); |
| 558 | output_w32(0xe0200040|rd_rn_rm(rt,rs1,rs2)|(imm<<7)); |
| 559 | } |
| 560 | |
| 561 | static void emit_addimm(u_int rs,int imm,u_int rt) |
| 562 | { |
| 563 | assert(rs<16); |
| 564 | assert(rt<16); |
| 565 | if(imm!=0) { |
| 566 | u_int armval; |
| 567 | if(genimm(imm,&armval)) { |
| 568 | assem_debug("add %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 569 | output_w32(0xe2800000|rd_rn_rm(rt,rs,0)|armval); |
| 570 | }else if(genimm(-imm,&armval)) { |
| 571 | assem_debug("sub %s,%s,#%d\n",regname[rt],regname[rs],-imm); |
| 572 | output_w32(0xe2400000|rd_rn_rm(rt,rs,0)|armval); |
| 573 | #ifdef HAVE_ARMV7 |
| 574 | }else if(rt!=rs&&(u_int)imm<65536) { |
| 575 | emit_movw(imm&0x0000ffff,rt); |
| 576 | emit_add(rs,rt,rt); |
| 577 | }else if(rt!=rs&&(u_int)-imm<65536) { |
| 578 | emit_movw(-imm&0x0000ffff,rt); |
| 579 | emit_sub(rs,rt,rt); |
| 580 | #endif |
| 581 | }else if((u_int)-imm<65536) { |
| 582 | assem_debug("sub %s,%s,#%d\n",regname[rt],regname[rs],(-imm)&0xFF00); |
| 583 | assem_debug("sub %s,%s,#%d\n",regname[rt],regname[rt],(-imm)&0xFF); |
| 584 | output_w32(0xe2400000|rd_rn_imm_shift(rt,rs,(-imm)>>8,8)); |
| 585 | output_w32(0xe2400000|rd_rn_imm_shift(rt,rt,(-imm)&0xff,0)); |
| 586 | }else { |
| 587 | do { |
| 588 | int shift = (ffs(imm) - 1) & ~1; |
| 589 | int imm8 = imm & (0xff << shift); |
| 590 | genimm_checked(imm8,&armval); |
| 591 | assem_debug("add %s,%s,#0x%x\n",regname[rt],regname[rs],imm8); |
| 592 | output_w32(0xe2800000|rd_rn_rm(rt,rs,0)|armval); |
| 593 | rs = rt; |
| 594 | imm &= ~imm8; |
| 595 | } |
| 596 | while (imm != 0); |
| 597 | } |
| 598 | } |
| 599 | else if(rs!=rt) emit_mov(rs,rt); |
| 600 | } |
| 601 | |
| 602 | static void emit_addimm_ptr(u_int rs, uintptr_t imm, u_int rt) |
| 603 | { |
| 604 | emit_addimm(rs, imm, rt); |
| 605 | } |
| 606 | |
| 607 | static void emit_addimm_and_set_flags3(u_int rs, int imm, u_int rt) |
| 608 | { |
| 609 | assert(imm>-65536&&imm<65536); |
| 610 | u_int armval; |
| 611 | if (genimm(imm, &armval)) { |
| 612 | assem_debug("adds %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 613 | output_w32(0xe2900000|rd_rn_rm(rt,rs,0)|armval); |
| 614 | } else if (genimm(-imm, &armval)) { |
| 615 | assem_debug("subs %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 616 | output_w32(0xe2500000|rd_rn_rm(rt,rs,0)|armval); |
| 617 | } else if (rs != rt) { |
| 618 | emit_movimm(imm, rt); |
| 619 | emit_adds(rs, rt, rt); |
| 620 | } else if (imm < 0) { |
| 621 | assem_debug("sub %s,%s,#%d\n",regname[rt],regname[rs],(-imm)&0xFF00); |
| 622 | assem_debug("subs %s,%s,#%d\n",regname[rt],regname[rt],(-imm)&0xFF); |
| 623 | output_w32(0xe2400000|rd_rn_imm_shift(rt,rs,(-imm)>>8,8)); |
| 624 | output_w32(0xe2500000|rd_rn_imm_shift(rt,rt,(-imm)&0xff,0)); |
| 625 | } else { |
| 626 | assem_debug("add %s,%s,#%d\n",regname[rt],regname[rs],imm&0xFF00); |
| 627 | assem_debug("adds %s,%s,#%d\n",regname[rt],regname[rt],imm&0xFF); |
| 628 | output_w32(0xe2800000|rd_rn_imm_shift(rt,rs,imm>>8,8)); |
| 629 | output_w32(0xe2900000|rd_rn_imm_shift(rt,rt,imm&0xff,0)); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | static void emit_addimm_and_set_flags(int imm, u_int rt) |
| 634 | { |
| 635 | emit_addimm_and_set_flags3(rt, imm, rt); |
| 636 | } |
| 637 | |
| 638 | static void emit_addnop(u_int r) |
| 639 | { |
| 640 | assert(r<16); |
| 641 | assem_debug("add %s,%s,#0 (nop)\n",regname[r],regname[r]); |
| 642 | output_w32(0xe2800000|rd_rn_rm(r,r,0)); |
| 643 | } |
| 644 | |
| 645 | static void emit_andimm(int rs,int imm,int rt) |
| 646 | { |
| 647 | u_int armval; |
| 648 | if(imm==0) { |
| 649 | emit_zeroreg(rt); |
| 650 | }else if(genimm(imm,&armval)) { |
| 651 | assem_debug("and %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 652 | output_w32(0xe2000000|rd_rn_rm(rt,rs,0)|armval); |
| 653 | }else if(genimm(~imm,&armval)) { |
| 654 | assem_debug("bic %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 655 | output_w32(0xe3c00000|rd_rn_rm(rt,rs,0)|armval); |
| 656 | }else if(imm==65535) { |
| 657 | #ifndef HAVE_ARMV6 |
| 658 | assem_debug("bic %s,%s,#FF000000\n",regname[rt],regname[rs]); |
| 659 | output_w32(0xe3c00000|rd_rn_rm(rt,rs,0)|0x4FF); |
| 660 | assem_debug("bic %s,%s,#00FF0000\n",regname[rt],regname[rt]); |
| 661 | output_w32(0xe3c00000|rd_rn_rm(rt,rt,0)|0x8FF); |
| 662 | #else |
| 663 | assem_debug("uxth %s,%s\n",regname[rt],regname[rs]); |
| 664 | output_w32(0xe6ff0070|rd_rn_rm(rt,0,rs)); |
| 665 | #endif |
| 666 | }else{ |
| 667 | assert(imm>0&&imm<65535); |
| 668 | #ifndef HAVE_ARMV7 |
| 669 | assem_debug("mov r14,#%d\n",imm&0xFF00); |
| 670 | output_w32(0xe3a00000|rd_rn_imm_shift(HOST_TEMPREG,0,imm>>8,8)); |
| 671 | assem_debug("add r14,r14,#%d\n",imm&0xFF); |
| 672 | output_w32(0xe2800000|rd_rn_imm_shift(HOST_TEMPREG,HOST_TEMPREG,imm&0xff,0)); |
| 673 | #else |
| 674 | emit_movw(imm,HOST_TEMPREG); |
| 675 | #endif |
| 676 | assem_debug("and %s,%s,r14\n",regname[rt],regname[rs]); |
| 677 | output_w32(0xe0000000|rd_rn_rm(rt,rs,HOST_TEMPREG)); |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | static void emit_orimm(int rs,int imm,int rt) |
| 682 | { |
| 683 | u_int armval; |
| 684 | if(imm==0) { |
| 685 | if(rs!=rt) emit_mov(rs,rt); |
| 686 | }else if(genimm(imm,&armval)) { |
| 687 | assem_debug("orr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 688 | output_w32(0xe3800000|rd_rn_rm(rt,rs,0)|armval); |
| 689 | }else{ |
| 690 | assert(imm>0&&imm<65536); |
| 691 | assem_debug("orr %s,%s,#%d\n",regname[rt],regname[rs],imm&0xFF00); |
| 692 | assem_debug("orr %s,%s,#%d\n",regname[rt],regname[rs],imm&0xFF); |
| 693 | output_w32(0xe3800000|rd_rn_imm_shift(rt,rs,imm>>8,8)); |
| 694 | output_w32(0xe3800000|rd_rn_imm_shift(rt,rt,imm&0xff,0)); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | static void emit_xorimm(int rs,int imm,int rt) |
| 699 | { |
| 700 | u_int armval; |
| 701 | if(imm==0) { |
| 702 | if(rs!=rt) emit_mov(rs,rt); |
| 703 | }else if(genimm(imm,&armval)) { |
| 704 | assem_debug("eor %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 705 | output_w32(0xe2200000|rd_rn_rm(rt,rs,0)|armval); |
| 706 | }else{ |
| 707 | assert(imm>0&&imm<65536); |
| 708 | assem_debug("eor %s,%s,#%d\n",regname[rt],regname[rs],imm&0xFF00); |
| 709 | assem_debug("eor %s,%s,#%d\n",regname[rt],regname[rs],imm&0xFF); |
| 710 | output_w32(0xe2200000|rd_rn_imm_shift(rt,rs,imm>>8,8)); |
| 711 | output_w32(0xe2200000|rd_rn_imm_shift(rt,rt,imm&0xff,0)); |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | static void emit_shlimm(int rs,u_int imm,int rt) |
| 716 | { |
| 717 | assert(imm>0); |
| 718 | assert(imm<32); |
| 719 | //if(imm==1) ... |
| 720 | assem_debug("lsl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 721 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|(imm<<7)); |
| 722 | } |
| 723 | |
| 724 | static void emit_lsls_imm(int rs,int imm,int rt) |
| 725 | { |
| 726 | assert(imm>0); |
| 727 | assert(imm<32); |
| 728 | assem_debug("lsls %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 729 | output_w32(0xe1b00000|rd_rn_rm(rt,0,rs)|(imm<<7)); |
| 730 | } |
| 731 | |
| 732 | static unused void emit_lslpls_imm(int rs,int imm,int rt) |
| 733 | { |
| 734 | assert(imm>0); |
| 735 | assert(imm<32); |
| 736 | assem_debug("lslpls %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 737 | output_w32(0x51b00000|rd_rn_rm(rt,0,rs)|(imm<<7)); |
| 738 | } |
| 739 | |
| 740 | static void emit_shrimm(int rs,u_int imm,int rt) |
| 741 | { |
| 742 | assert(imm>0); |
| 743 | assert(imm<32); |
| 744 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 745 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x20|(imm<<7)); |
| 746 | } |
| 747 | |
| 748 | static void emit_sarimm(int rs,u_int imm,int rt) |
| 749 | { |
| 750 | assert(imm>0); |
| 751 | assert(imm<32); |
| 752 | assem_debug("asr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 753 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x40|(imm<<7)); |
| 754 | } |
| 755 | |
| 756 | static void emit_rorimm(int rs,u_int imm,int rt) |
| 757 | { |
| 758 | assert(imm>0); |
| 759 | assert(imm<32); |
| 760 | assem_debug("ror %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 761 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x60|(imm<<7)); |
| 762 | } |
| 763 | |
| 764 | static void emit_signextend16(int rs,int rt) |
| 765 | { |
| 766 | #ifndef HAVE_ARMV6 |
| 767 | emit_shlimm(rs,16,rt); |
| 768 | emit_sarimm(rt,16,rt); |
| 769 | #else |
| 770 | assem_debug("sxth %s,%s\n",regname[rt],regname[rs]); |
| 771 | output_w32(0xe6bf0070|rd_rn_rm(rt,0,rs)); |
| 772 | #endif |
| 773 | } |
| 774 | |
| 775 | static void emit_signextend8(int rs,int rt) |
| 776 | { |
| 777 | #ifndef HAVE_ARMV6 |
| 778 | emit_shlimm(rs,24,rt); |
| 779 | emit_sarimm(rt,24,rt); |
| 780 | #else |
| 781 | assem_debug("sxtb %s,%s\n",regname[rt],regname[rs]); |
| 782 | output_w32(0xe6af0070|rd_rn_rm(rt,0,rs)); |
| 783 | #endif |
| 784 | } |
| 785 | |
| 786 | static void emit_shl(u_int rs,u_int shift,u_int rt) |
| 787 | { |
| 788 | assert(rs<16); |
| 789 | assert(rt<16); |
| 790 | assert(shift<16); |
| 791 | //if(imm==1) ... |
| 792 | assem_debug("lsl %s,%s,%s\n",regname[rt],regname[rs],regname[shift]); |
| 793 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x10|(shift<<8)); |
| 794 | } |
| 795 | |
| 796 | static void emit_shr(u_int rs,u_int shift,u_int rt) |
| 797 | { |
| 798 | assert(rs<16); |
| 799 | assert(rt<16); |
| 800 | assert(shift<16); |
| 801 | assem_debug("lsr %s,%s,%s\n",regname[rt],regname[rs],regname[shift]); |
| 802 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x30|(shift<<8)); |
| 803 | } |
| 804 | |
| 805 | static void emit_sar(u_int rs,u_int shift,u_int rt) |
| 806 | { |
| 807 | assert(rs<16); |
| 808 | assert(rt<16); |
| 809 | assert(shift<16); |
| 810 | assem_debug("asr %s,%s,%s\n",regname[rt],regname[rs],regname[shift]); |
| 811 | output_w32(0xe1a00000|rd_rn_rm(rt,0,rs)|0x50|(shift<<8)); |
| 812 | } |
| 813 | |
| 814 | static unused void emit_orrshl(u_int rs,u_int shift,u_int rt) |
| 815 | { |
| 816 | assert(rs<16); |
| 817 | assert(rt<16); |
| 818 | assert(shift<16); |
| 819 | assem_debug("orr %s,%s,%s,lsl %s\n",regname[rt],regname[rt],regname[rs],regname[shift]); |
| 820 | output_w32(0xe1800000|rd_rn_rm(rt,rt,rs)|0x10|(shift<<8)); |
| 821 | } |
| 822 | |
| 823 | static unused void emit_orrshr(u_int rs,u_int shift,u_int rt) |
| 824 | { |
| 825 | assert(rs<16); |
| 826 | assert(rt<16); |
| 827 | assert(shift<16); |
| 828 | assem_debug("orr %s,%s,%s,lsr %s\n",regname[rt],regname[rt],regname[rs],regname[shift]); |
| 829 | output_w32(0xe1800000|rd_rn_rm(rt,rt,rs)|0x30|(shift<<8)); |
| 830 | } |
| 831 | |
| 832 | static void emit_cmpimm(int rs,int imm) |
| 833 | { |
| 834 | u_int armval; |
| 835 | if(genimm(imm,&armval)) { |
| 836 | assem_debug("cmp %s,#%d\n",regname[rs],imm); |
| 837 | output_w32(0xe3500000|rd_rn_rm(0,rs,0)|armval); |
| 838 | }else if(genimm(-imm,&armval)) { |
| 839 | assem_debug("cmn %s,#%d\n",regname[rs],imm); |
| 840 | output_w32(0xe3700000|rd_rn_rm(0,rs,0)|armval); |
| 841 | }else if(imm>0) { |
| 842 | assert(imm<65536); |
| 843 | emit_movimm(imm,HOST_TEMPREG); |
| 844 | assem_debug("cmp %s,r14\n",regname[rs]); |
| 845 | output_w32(0xe1500000|rd_rn_rm(0,rs,HOST_TEMPREG)); |
| 846 | }else{ |
| 847 | assert(imm>-65536); |
| 848 | emit_movimm(-imm,HOST_TEMPREG); |
| 849 | assem_debug("cmn %s,r14\n",regname[rs]); |
| 850 | output_w32(0xe1700000|rd_rn_rm(0,rs,HOST_TEMPREG)); |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | static void emit_cmovne_imm(int imm,int rt) |
| 855 | { |
| 856 | assem_debug("movne %s,#%d\n",regname[rt],imm); |
| 857 | u_int armval; |
| 858 | genimm_checked(imm,&armval); |
| 859 | output_w32(0x13a00000|rd_rn_rm(rt,0,0)|armval); |
| 860 | } |
| 861 | |
| 862 | static void emit_cmovl_imm(int imm,int rt) |
| 863 | { |
| 864 | assem_debug("movlt %s,#%d\n",regname[rt],imm); |
| 865 | u_int armval; |
| 866 | genimm_checked(imm,&armval); |
| 867 | output_w32(0xb3a00000|rd_rn_rm(rt,0,0)|armval); |
| 868 | } |
| 869 | |
| 870 | static void emit_cmovb_imm(int imm,int rt) |
| 871 | { |
| 872 | assem_debug("movcc %s,#%d\n",regname[rt],imm); |
| 873 | u_int armval; |
| 874 | genimm_checked(imm,&armval); |
| 875 | output_w32(0x33a00000|rd_rn_rm(rt,0,0)|armval); |
| 876 | } |
| 877 | |
| 878 | static void emit_cmovae_imm(int imm,int rt) |
| 879 | { |
| 880 | assem_debug("movcs %s,#%d\n",regname[rt],imm); |
| 881 | u_int armval; |
| 882 | genimm_checked(imm,&armval); |
| 883 | output_w32(0x23a00000|rd_rn_rm(rt,0,0)|armval); |
| 884 | } |
| 885 | |
| 886 | static void emit_cmovs_imm(int imm,int rt) |
| 887 | { |
| 888 | assem_debug("movmi %s,#%d\n",regname[rt],imm); |
| 889 | u_int armval; |
| 890 | genimm_checked(imm,&armval); |
| 891 | output_w32(0x43a00000|rd_rn_rm(rt,0,0)|armval); |
| 892 | } |
| 893 | |
| 894 | static unused void emit_cmovne_reg(int rs,int rt) |
| 895 | { |
| 896 | assem_debug("movne %s,%s\n",regname[rt],regname[rs]); |
| 897 | output_w32(0x11a00000|rd_rn_rm(rt,0,rs)); |
| 898 | } |
| 899 | |
| 900 | static void emit_cmovl_reg(int rs,int rt) |
| 901 | { |
| 902 | assem_debug("movlt %s,%s\n",regname[rt],regname[rs]); |
| 903 | output_w32(0xb1a00000|rd_rn_rm(rt,0,rs)); |
| 904 | } |
| 905 | |
| 906 | static void emit_cmovb_reg(int rs,int rt) |
| 907 | { |
| 908 | assem_debug("movcc %s,%s\n",regname[rt],regname[rs]); |
| 909 | output_w32(0x31a00000|rd_rn_rm(rt,0,rs)); |
| 910 | } |
| 911 | |
| 912 | static void emit_cmovs_reg(int rs,int rt) |
| 913 | { |
| 914 | assem_debug("movmi %s,%s\n",regname[rt],regname[rs]); |
| 915 | output_w32(0x41a00000|rd_rn_rm(rt,0,rs)); |
| 916 | } |
| 917 | |
| 918 | static void emit_slti32(int rs,int imm,int rt) |
| 919 | { |
| 920 | if(rs!=rt) emit_zeroreg(rt); |
| 921 | emit_cmpimm(rs,imm); |
| 922 | if(rs==rt) emit_movimm(0,rt); |
| 923 | emit_cmovl_imm(1,rt); |
| 924 | } |
| 925 | |
| 926 | static void emit_sltiu32(int rs,int imm,int rt) |
| 927 | { |
| 928 | if(rs!=rt) emit_zeroreg(rt); |
| 929 | emit_cmpimm(rs,imm); |
| 930 | if(rs==rt) emit_movimm(0,rt); |
| 931 | emit_cmovb_imm(1,rt); |
| 932 | } |
| 933 | |
| 934 | static void emit_cmp(int rs,int rt) |
| 935 | { |
| 936 | assem_debug("cmp %s,%s\n",regname[rs],regname[rt]); |
| 937 | output_w32(0xe1500000|rd_rn_rm(0,rs,rt)); |
| 938 | } |
| 939 | |
| 940 | static void emit_cmpcs(int rs,int rt) |
| 941 | { |
| 942 | assem_debug("cmpcs %s,%s\n",regname[rs],regname[rt]); |
| 943 | output_w32(0x21500000|rd_rn_rm(0,rs,rt)); |
| 944 | } |
| 945 | |
| 946 | static void emit_set_gz32(int rs, int rt) |
| 947 | { |
| 948 | //assem_debug("set_gz32\n"); |
| 949 | emit_cmpimm(rs,1); |
| 950 | emit_movimm(1,rt); |
| 951 | emit_cmovl_imm(0,rt); |
| 952 | } |
| 953 | |
| 954 | static void emit_set_nz32(int rs, int rt) |
| 955 | { |
| 956 | //assem_debug("set_nz32\n"); |
| 957 | if(rs!=rt) emit_movs(rs,rt); |
| 958 | else emit_test(rs,rs); |
| 959 | emit_cmovne_imm(1,rt); |
| 960 | } |
| 961 | |
| 962 | static void emit_set_if_less32(int rs1, int rs2, int rt) |
| 963 | { |
| 964 | //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
| 965 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
| 966 | emit_cmp(rs1,rs2); |
| 967 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
| 968 | emit_cmovl_imm(1,rt); |
| 969 | } |
| 970 | |
| 971 | static void emit_set_if_carry32(int rs1, int rs2, int rt) |
| 972 | { |
| 973 | //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
| 974 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
| 975 | emit_cmp(rs1,rs2); |
| 976 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
| 977 | emit_cmovb_imm(1,rt); |
| 978 | } |
| 979 | |
| 980 | static int can_jump_or_call(const void *a) |
| 981 | { |
| 982 | intptr_t offset = (u_char *)a - out - 8; |
| 983 | return (-33554432 <= offset && offset < 33554432); |
| 984 | } |
| 985 | |
| 986 | static void emit_call(const void *a_) |
| 987 | { |
| 988 | int a = (int)a_; |
| 989 | assem_debug("bl %x (%x+%x)%s\n",a,(int)out,a-(int)out-8,func_name(a_)); |
| 990 | u_int offset=genjmp(a); |
| 991 | output_w32(0xeb000000|offset); |
| 992 | } |
| 993 | |
| 994 | static void emit_jmp(const void *a_) |
| 995 | { |
| 996 | int a = (int)a_; |
| 997 | assem_debug("b %x (%x+%x)%s\n",a,(int)out,a-(int)out-8,func_name(a_)); |
| 998 | u_int offset=genjmp(a); |
| 999 | output_w32(0xea000000|offset); |
| 1000 | } |
| 1001 | |
| 1002 | static void emit_jne(const void *a_) |
| 1003 | { |
| 1004 | int a = (int)a_; |
| 1005 | assem_debug("bne %x\n",a); |
| 1006 | u_int offset=genjmp(a); |
| 1007 | output_w32(0x1a000000|offset); |
| 1008 | } |
| 1009 | |
| 1010 | static void emit_jeq(const void *a_) |
| 1011 | { |
| 1012 | int a = (int)a_; |
| 1013 | assem_debug("beq %x\n",a); |
| 1014 | u_int offset=genjmp(a); |
| 1015 | output_w32(0x0a000000|offset); |
| 1016 | } |
| 1017 | |
| 1018 | static void emit_js(const void *a_) |
| 1019 | { |
| 1020 | int a = (int)a_; |
| 1021 | assem_debug("bmi %x\n",a); |
| 1022 | u_int offset=genjmp(a); |
| 1023 | output_w32(0x4a000000|offset); |
| 1024 | } |
| 1025 | |
| 1026 | static void emit_jns(const void *a_) |
| 1027 | { |
| 1028 | int a = (int)a_; |
| 1029 | assem_debug("bpl %x\n",a); |
| 1030 | u_int offset=genjmp(a); |
| 1031 | output_w32(0x5a000000|offset); |
| 1032 | } |
| 1033 | |
| 1034 | static void emit_jl(const void *a_) |
| 1035 | { |
| 1036 | int a = (int)a_; |
| 1037 | assem_debug("blt %x\n",a); |
| 1038 | u_int offset=genjmp(a); |
| 1039 | output_w32(0xba000000|offset); |
| 1040 | } |
| 1041 | |
| 1042 | static void emit_jge(const void *a_) |
| 1043 | { |
| 1044 | int a = (int)a_; |
| 1045 | assem_debug("bge %x\n",a); |
| 1046 | u_int offset=genjmp(a); |
| 1047 | output_w32(0xaa000000|offset); |
| 1048 | } |
| 1049 | |
| 1050 | static void emit_jo(const void *a_) |
| 1051 | { |
| 1052 | int a = (int)a_; |
| 1053 | assem_debug("bvs %x\n",a); |
| 1054 | u_int offset=genjmp(a); |
| 1055 | output_w32(0x6a000000|offset); |
| 1056 | } |
| 1057 | |
| 1058 | static void emit_jno(const void *a_) |
| 1059 | { |
| 1060 | int a = (int)a_; |
| 1061 | assem_debug("bvc %x\n",a); |
| 1062 | u_int offset=genjmp(a); |
| 1063 | output_w32(0x7a000000|offset); |
| 1064 | } |
| 1065 | |
| 1066 | static void emit_jc(const void *a_) |
| 1067 | { |
| 1068 | int a = (int)a_; |
| 1069 | assem_debug("bcs %x\n",a); |
| 1070 | u_int offset=genjmp(a); |
| 1071 | output_w32(0x2a000000|offset); |
| 1072 | } |
| 1073 | |
| 1074 | static void emit_jcc(const void *a_) |
| 1075 | { |
| 1076 | int a = (int)a_; |
| 1077 | assem_debug("bcc %x\n",a); |
| 1078 | u_int offset=genjmp(a); |
| 1079 | output_w32(0x3a000000|offset); |
| 1080 | } |
| 1081 | |
| 1082 | static void *emit_cbz(int rs, const void *a) |
| 1083 | { |
| 1084 | void *ret; |
| 1085 | emit_test(rs, rs); |
| 1086 | ret = out; |
| 1087 | emit_jeq(a); |
| 1088 | return ret; |
| 1089 | } |
| 1090 | |
| 1091 | static unused void emit_callreg(u_int r) |
| 1092 | { |
| 1093 | assert(r<15); |
| 1094 | assem_debug("blx %s\n",regname[r]); |
| 1095 | output_w32(0xe12fff30|r); |
| 1096 | } |
| 1097 | |
| 1098 | static void emit_jmpreg(u_int r) |
| 1099 | { |
| 1100 | assem_debug("mov pc,%s\n",regname[r]); |
| 1101 | output_w32(0xe1a00000|rd_rn_rm(15,0,r)); |
| 1102 | } |
| 1103 | |
| 1104 | static void emit_ret(void) |
| 1105 | { |
| 1106 | emit_jmpreg(14); |
| 1107 | } |
| 1108 | |
| 1109 | static void emit_readword_indexed(int offset, int rs, int rt) |
| 1110 | { |
| 1111 | assert(offset>-4096&&offset<4096); |
| 1112 | assem_debug("ldr %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1113 | if(offset>=0) { |
| 1114 | output_w32(0xe5900000|rd_rn_rm(rt,rs,0)|offset); |
| 1115 | }else{ |
| 1116 | output_w32(0xe5100000|rd_rn_rm(rt,rs,0)|(-offset)); |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | static void emit_readword_dualindexedx4(int rs1, int rs2, int rt) |
| 1121 | { |
| 1122 | assem_debug("ldr %s,%s,%s lsl #2\n",regname[rt],regname[rs1],regname[rs2]); |
| 1123 | output_w32(0xe7900000|rd_rn_rm(rt,rs1,rs2)|0x100); |
| 1124 | } |
| 1125 | #define emit_readptr_dualindexedx_ptrlen emit_readword_dualindexedx4 |
| 1126 | |
| 1127 | static void emit_ldr_dualindexed(int rs1, int rs2, int rt) |
| 1128 | { |
| 1129 | assem_debug("ldr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1130 | output_w32(0xe7900000|rd_rn_rm(rt,rs1,rs2)); |
| 1131 | } |
| 1132 | |
| 1133 | static void emit_ldrcc_dualindexed(int rs1, int rs2, int rt) |
| 1134 | { |
| 1135 | assem_debug("ldrcc %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1136 | output_w32(0x37900000|rd_rn_rm(rt,rs1,rs2)); |
| 1137 | } |
| 1138 | |
| 1139 | static void emit_ldrb_dualindexed(int rs1, int rs2, int rt) |
| 1140 | { |
| 1141 | assem_debug("ldrb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1142 | output_w32(0xe7d00000|rd_rn_rm(rt,rs1,rs2)); |
| 1143 | } |
| 1144 | |
| 1145 | static void emit_ldrccb_dualindexed(int rs1, int rs2, int rt) |
| 1146 | { |
| 1147 | assem_debug("ldrccb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1148 | output_w32(0x37d00000|rd_rn_rm(rt,rs1,rs2)); |
| 1149 | } |
| 1150 | |
| 1151 | static void emit_ldrsb_dualindexed(int rs1, int rs2, int rt) |
| 1152 | { |
| 1153 | assem_debug("ldrsb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1154 | output_w32(0xe19000d0|rd_rn_rm(rt,rs1,rs2)); |
| 1155 | } |
| 1156 | |
| 1157 | static void emit_ldrccsb_dualindexed(int rs1, int rs2, int rt) |
| 1158 | { |
| 1159 | assem_debug("ldrccsb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1160 | output_w32(0x319000d0|rd_rn_rm(rt,rs1,rs2)); |
| 1161 | } |
| 1162 | |
| 1163 | static void emit_ldrh_dualindexed(int rs1, int rs2, int rt) |
| 1164 | { |
| 1165 | assem_debug("ldrh %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1166 | output_w32(0xe19000b0|rd_rn_rm(rt,rs1,rs2)); |
| 1167 | } |
| 1168 | |
| 1169 | static void emit_ldrcch_dualindexed(int rs1, int rs2, int rt) |
| 1170 | { |
| 1171 | assem_debug("ldrcch %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1172 | output_w32(0x319000b0|rd_rn_rm(rt,rs1,rs2)); |
| 1173 | } |
| 1174 | |
| 1175 | static void emit_ldrsh_dualindexed(int rs1, int rs2, int rt) |
| 1176 | { |
| 1177 | assem_debug("ldrsh %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1178 | output_w32(0xe19000f0|rd_rn_rm(rt,rs1,rs2)); |
| 1179 | } |
| 1180 | |
| 1181 | static void emit_ldrccsh_dualindexed(int rs1, int rs2, int rt) |
| 1182 | { |
| 1183 | assem_debug("ldrccsh %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1184 | output_w32(0x319000f0|rd_rn_rm(rt,rs1,rs2)); |
| 1185 | } |
| 1186 | |
| 1187 | static void emit_str_dualindexed(int rs1, int rs2, int rt) |
| 1188 | { |
| 1189 | assem_debug("str %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1190 | output_w32(0xe7800000|rd_rn_rm(rt,rs1,rs2)); |
| 1191 | } |
| 1192 | |
| 1193 | static void emit_strb_dualindexed(int rs1, int rs2, int rt) |
| 1194 | { |
| 1195 | assem_debug("strb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1196 | output_w32(0xe7c00000|rd_rn_rm(rt,rs1,rs2)); |
| 1197 | } |
| 1198 | |
| 1199 | static void emit_strh_dualindexed(int rs1, int rs2, int rt) |
| 1200 | { |
| 1201 | assem_debug("strh %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1202 | output_w32(0xe18000b0|rd_rn_rm(rt,rs1,rs2)); |
| 1203 | } |
| 1204 | |
| 1205 | static void emit_movsbl_indexed(int offset, int rs, int rt) |
| 1206 | { |
| 1207 | assert(offset>-256&&offset<256); |
| 1208 | assem_debug("ldrsb %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1209 | if(offset>=0) { |
| 1210 | output_w32(0xe1d000d0|rd_rn_rm(rt,rs,0)|((offset<<4)&0xf00)|(offset&0xf)); |
| 1211 | }else{ |
| 1212 | output_w32(0xe15000d0|rd_rn_rm(rt,rs,0)|(((-offset)<<4)&0xf00)|((-offset)&0xf)); |
| 1213 | } |
| 1214 | } |
| 1215 | |
| 1216 | static void emit_movswl_indexed(int offset, int rs, int rt) |
| 1217 | { |
| 1218 | assert(offset>-256&&offset<256); |
| 1219 | assem_debug("ldrsh %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1220 | if(offset>=0) { |
| 1221 | output_w32(0xe1d000f0|rd_rn_rm(rt,rs,0)|((offset<<4)&0xf00)|(offset&0xf)); |
| 1222 | }else{ |
| 1223 | output_w32(0xe15000f0|rd_rn_rm(rt,rs,0)|(((-offset)<<4)&0xf00)|((-offset)&0xf)); |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | static void emit_movzbl_indexed(int offset, int rs, int rt) |
| 1228 | { |
| 1229 | assert(offset>-4096&&offset<4096); |
| 1230 | assem_debug("ldrb %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1231 | if(offset>=0) { |
| 1232 | output_w32(0xe5d00000|rd_rn_rm(rt,rs,0)|offset); |
| 1233 | }else{ |
| 1234 | output_w32(0xe5500000|rd_rn_rm(rt,rs,0)|(-offset)); |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | static void emit_movzwl_indexed(int offset, int rs, int rt) |
| 1239 | { |
| 1240 | assert(offset>-256&&offset<256); |
| 1241 | assem_debug("ldrh %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1242 | if(offset>=0) { |
| 1243 | output_w32(0xe1d000b0|rd_rn_rm(rt,rs,0)|((offset<<4)&0xf00)|(offset&0xf)); |
| 1244 | }else{ |
| 1245 | output_w32(0xe15000b0|rd_rn_rm(rt,rs,0)|(((-offset)<<4)&0xf00)|((-offset)&0xf)); |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | static void emit_ldrd(int offset, int rs, int rt) |
| 1250 | { |
| 1251 | assert(offset>-256&&offset<256); |
| 1252 | assem_debug("ldrd %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1253 | if(offset>=0) { |
| 1254 | output_w32(0xe1c000d0|rd_rn_rm(rt,rs,0)|((offset<<4)&0xf00)|(offset&0xf)); |
| 1255 | }else{ |
| 1256 | output_w32(0xe14000d0|rd_rn_rm(rt,rs,0)|(((-offset)<<4)&0xf00)|((-offset)&0xf)); |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | static void emit_readword(void *addr, int rt) |
| 1261 | { |
| 1262 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 1263 | assert(offset<4096); |
| 1264 | assem_debug("ldr %s,fp+%#x%s\n", regname[rt], offset, fpofs_name(offset)); |
| 1265 | output_w32(0xe5900000|rd_rn_rm(rt,FP,0)|offset); |
| 1266 | } |
| 1267 | #define emit_readptr emit_readword |
| 1268 | |
| 1269 | static void emit_writeword_indexed(int rt, int offset, int rs) |
| 1270 | { |
| 1271 | assert(offset>-4096&&offset<4096); |
| 1272 | assem_debug("str %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1273 | if(offset>=0) { |
| 1274 | output_w32(0xe5800000|rd_rn_rm(rt,rs,0)|offset); |
| 1275 | }else{ |
| 1276 | output_w32(0xe5000000|rd_rn_rm(rt,rs,0)|(-offset)); |
| 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | static void emit_writehword_indexed(int rt, int offset, int rs) |
| 1281 | { |
| 1282 | assert(offset>-256&&offset<256); |
| 1283 | assem_debug("strh %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1284 | if(offset>=0) { |
| 1285 | output_w32(0xe1c000b0|rd_rn_rm(rt,rs,0)|((offset<<4)&0xf00)|(offset&0xf)); |
| 1286 | }else{ |
| 1287 | output_w32(0xe14000b0|rd_rn_rm(rt,rs,0)|(((-offset)<<4)&0xf00)|((-offset)&0xf)); |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | static void emit_writebyte_indexed(int rt, int offset, int rs) |
| 1292 | { |
| 1293 | assert(offset>-4096&&offset<4096); |
| 1294 | assem_debug("strb %s,%s+%d\n",regname[rt],regname[rs],offset); |
| 1295 | if(offset>=0) { |
| 1296 | output_w32(0xe5c00000|rd_rn_rm(rt,rs,0)|offset); |
| 1297 | }else{ |
| 1298 | output_w32(0xe5400000|rd_rn_rm(rt,rs,0)|(-offset)); |
| 1299 | } |
| 1300 | } |
| 1301 | |
| 1302 | static void emit_strcc_dualindexed(int rs1, int rs2, int rt) |
| 1303 | { |
| 1304 | assem_debug("strcc %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1305 | output_w32(0x37800000|rd_rn_rm(rt,rs1,rs2)); |
| 1306 | } |
| 1307 | |
| 1308 | static void emit_strccb_dualindexed(int rs1, int rs2, int rt) |
| 1309 | { |
| 1310 | assem_debug("strccb %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1311 | output_w32(0x37c00000|rd_rn_rm(rt,rs1,rs2)); |
| 1312 | } |
| 1313 | |
| 1314 | static void emit_strcch_dualindexed(int rs1, int rs2, int rt) |
| 1315 | { |
| 1316 | assem_debug("strcch %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1317 | output_w32(0x318000b0|rd_rn_rm(rt,rs1,rs2)); |
| 1318 | } |
| 1319 | |
| 1320 | static void emit_writeword(int rt, void *addr) |
| 1321 | { |
| 1322 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 1323 | assert(offset<4096); |
| 1324 | assem_debug("str %s,fp+%#x%s\n", regname[rt], offset, fpofs_name(offset)); |
| 1325 | output_w32(0xe5800000|rd_rn_rm(rt,FP,0)|offset); |
| 1326 | } |
| 1327 | |
| 1328 | static void emit_umull(u_int rs1, u_int rs2, u_int hi, u_int lo) |
| 1329 | { |
| 1330 | assem_debug("umull %s, %s, %s, %s\n",regname[lo],regname[hi],regname[rs1],regname[rs2]); |
| 1331 | assert(rs1<16); |
| 1332 | assert(rs2<16); |
| 1333 | assert(hi<16); |
| 1334 | assert(lo<16); |
| 1335 | output_w32(0xe0800090|(hi<<16)|(lo<<12)|(rs2<<8)|rs1); |
| 1336 | } |
| 1337 | |
| 1338 | static void emit_smull(u_int rs1, u_int rs2, u_int hi, u_int lo) |
| 1339 | { |
| 1340 | assem_debug("smull %s, %s, %s, %s\n",regname[lo],regname[hi],regname[rs1],regname[rs2]); |
| 1341 | assert(rs1<16); |
| 1342 | assert(rs2<16); |
| 1343 | assert(hi<16); |
| 1344 | assert(lo<16); |
| 1345 | output_w32(0xe0c00090|(hi<<16)|(lo<<12)|(rs2<<8)|rs1); |
| 1346 | } |
| 1347 | |
| 1348 | static void emit_clz(int rs,int rt) |
| 1349 | { |
| 1350 | assem_debug("clz %s,%s\n",regname[rt],regname[rs]); |
| 1351 | output_w32(0xe16f0f10|rd_rn_rm(rt,0,rs)); |
| 1352 | } |
| 1353 | |
| 1354 | static void emit_subcs(int rs1,int rs2,int rt) |
| 1355 | { |
| 1356 | assem_debug("subcs %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1357 | output_w32(0x20400000|rd_rn_rm(rt,rs1,rs2)); |
| 1358 | } |
| 1359 | |
| 1360 | static void emit_shrcc_imm(int rs,u_int imm,int rt) |
| 1361 | { |
| 1362 | assert(imm>0); |
| 1363 | assert(imm<32); |
| 1364 | assem_debug("lsrcc %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 1365 | output_w32(0x31a00000|rd_rn_rm(rt,0,rs)|0x20|(imm<<7)); |
| 1366 | } |
| 1367 | |
| 1368 | static void emit_shrne_imm(int rs,u_int imm,int rt) |
| 1369 | { |
| 1370 | assert(imm>0); |
| 1371 | assert(imm<32); |
| 1372 | assem_debug("lsrne %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 1373 | output_w32(0x11a00000|rd_rn_rm(rt,0,rs)|0x20|(imm<<7)); |
| 1374 | } |
| 1375 | |
| 1376 | static void emit_negmi(int rs, int rt) |
| 1377 | { |
| 1378 | assem_debug("rsbmi %s,%s,#0\n",regname[rt],regname[rs]); |
| 1379 | output_w32(0x42600000|rd_rn_rm(rt,rs,0)); |
| 1380 | } |
| 1381 | |
| 1382 | static void emit_negsmi(int rs, int rt) |
| 1383 | { |
| 1384 | assem_debug("rsbsmi %s,%s,#0\n",regname[rt],regname[rs]); |
| 1385 | output_w32(0x42700000|rd_rn_rm(rt,rs,0)); |
| 1386 | } |
| 1387 | |
| 1388 | static void emit_bic_lsl(u_int rs1,u_int rs2,u_int shift,u_int rt) |
| 1389 | { |
| 1390 | assem_debug("bic %s,%s,%s lsl %s\n",regname[rt],regname[rs1],regname[rs2],regname[shift]); |
| 1391 | output_w32(0xe1C00000|rd_rn_rm(rt,rs1,rs2)|0x10|(shift<<8)); |
| 1392 | } |
| 1393 | |
| 1394 | static void emit_bic_lsr(u_int rs1,u_int rs2,u_int shift,u_int rt) |
| 1395 | { |
| 1396 | assem_debug("bic %s,%s,%s lsr %s\n",regname[rt],regname[rs1],regname[rs2],regname[shift]); |
| 1397 | output_w32(0xe1C00000|rd_rn_rm(rt,rs1,rs2)|0x30|(shift<<8)); |
| 1398 | } |
| 1399 | |
| 1400 | static void emit_teq(int rs, int rt) |
| 1401 | { |
| 1402 | assem_debug("teq %s,%s\n",regname[rs],regname[rt]); |
| 1403 | output_w32(0xe1300000|rd_rn_rm(0,rs,rt)); |
| 1404 | } |
| 1405 | |
| 1406 | static unused void emit_rsbimm(int rs, int imm, int rt) |
| 1407 | { |
| 1408 | u_int armval; |
| 1409 | genimm_checked(imm,&armval); |
| 1410 | assem_debug("rsb %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 1411 | output_w32(0xe2600000|rd_rn_rm(rt,rs,0)|armval); |
| 1412 | } |
| 1413 | |
| 1414 | // Conditionally select one of two immediates, optimizing for small code size |
| 1415 | // This will only be called if HAVE_CMOV_IMM is defined |
| 1416 | static void emit_cmov2imm_e_ne_compact(int imm1,int imm2,u_int rt) |
| 1417 | { |
| 1418 | u_int armval; |
| 1419 | if(genimm(imm2-imm1,&armval)) { |
| 1420 | emit_movimm(imm1,rt); |
| 1421 | assem_debug("addne %s,%s,#%d\n",regname[rt],regname[rt],imm2-imm1); |
| 1422 | output_w32(0x12800000|rd_rn_rm(rt,rt,0)|armval); |
| 1423 | }else if(genimm(imm1-imm2,&armval)) { |
| 1424 | emit_movimm(imm1,rt); |
| 1425 | assem_debug("subne %s,%s,#%d\n",regname[rt],regname[rt],imm1-imm2); |
| 1426 | output_w32(0x12400000|rd_rn_rm(rt,rt,0)|armval); |
| 1427 | } |
| 1428 | else { |
| 1429 | #ifndef HAVE_ARMV7 |
| 1430 | emit_movimm(imm1,rt); |
| 1431 | add_literal((int)out,imm2); |
| 1432 | assem_debug("ldrne %s,pc+? [=%x]\n",regname[rt],imm2); |
| 1433 | output_w32(0x15900000|rd_rn_rm(rt,15,0)); |
| 1434 | #else |
| 1435 | emit_movw(imm1&0x0000FFFF,rt); |
| 1436 | if((imm1&0xFFFF)!=(imm2&0xFFFF)) { |
| 1437 | assem_debug("movwne %s,#%d (0x%x)\n",regname[rt],imm2&0xFFFF,imm2&0xFFFF); |
| 1438 | output_w32(0x13000000|rd_rn_rm(rt,0,0)|(imm2&0xfff)|((imm2<<4)&0xf0000)); |
| 1439 | } |
| 1440 | emit_movt(imm1&0xFFFF0000,rt); |
| 1441 | if((imm1&0xFFFF0000)!=(imm2&0xFFFF0000)) { |
| 1442 | assem_debug("movtne %s,#%d (0x%x)\n",regname[rt],imm2&0xffff0000,imm2&0xffff0000); |
| 1443 | output_w32(0x13400000|rd_rn_rm(rt,0,0)|((imm2>>16)&0xfff)|((imm2>>12)&0xf0000)); |
| 1444 | } |
| 1445 | #endif |
| 1446 | } |
| 1447 | } |
| 1448 | |
| 1449 | // special case for checking invalid_code |
| 1450 | static void emit_ldrb_indexedsr12_reg(int base, int r, int rt) |
| 1451 | { |
| 1452 | assem_debug("ldrb %s,%s,%s lsr #12\n",regname[rt],regname[base],regname[r]); |
| 1453 | output_w32(0xe7d00000|rd_rn_rm(rt,base,r)|0x620); |
| 1454 | } |
| 1455 | |
| 1456 | static void emit_callne(int a) |
| 1457 | { |
| 1458 | assem_debug("blne %x\n",a); |
| 1459 | u_int offset=genjmp(a); |
| 1460 | output_w32(0x1b000000|offset); |
| 1461 | } |
| 1462 | |
| 1463 | // Used to preload hash table entries |
| 1464 | static unused void emit_prefetchreg(int r) |
| 1465 | { |
| 1466 | assem_debug("pld %s\n",regname[r]); |
| 1467 | output_w32(0xf5d0f000|rd_rn_rm(0,r,0)); |
| 1468 | } |
| 1469 | |
| 1470 | // Special case for mini_ht |
| 1471 | static void emit_ldreq_indexed(int rs, u_int offset, int rt) |
| 1472 | { |
| 1473 | assert(offset<4096); |
| 1474 | assem_debug("ldreq %s,[%s, #%d]\n",regname[rt],regname[rs],offset); |
| 1475 | output_w32(0x05900000|rd_rn_rm(rt,rs,0)|offset); |
| 1476 | } |
| 1477 | |
| 1478 | static void emit_orrne_imm(int rs,int imm,int rt) |
| 1479 | { |
| 1480 | u_int armval; |
| 1481 | genimm_checked(imm,&armval); |
| 1482 | assem_debug("orrne %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 1483 | output_w32(0x13800000|rd_rn_rm(rt,rs,0)|armval); |
| 1484 | } |
| 1485 | |
| 1486 | static unused void emit_addpl_imm(int rs,int imm,int rt) |
| 1487 | { |
| 1488 | u_int armval; |
| 1489 | genimm_checked(imm,&armval); |
| 1490 | assem_debug("addpl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 1491 | output_w32(0x52800000|rd_rn_rm(rt,rs,0)|armval); |
| 1492 | } |
| 1493 | |
| 1494 | static void emit_jno_unlikely(int a) |
| 1495 | { |
| 1496 | //emit_jno(a); |
| 1497 | assem_debug("addvc pc,pc,#? (%x)\n",/*a-(int)out-8,*/a); |
| 1498 | output_w32(0x72800000|rd_rn_rm(15,15,0)); |
| 1499 | } |
| 1500 | |
| 1501 | static void save_regs_all(u_int reglist) |
| 1502 | { |
| 1503 | int i; |
| 1504 | if(!reglist) return; |
| 1505 | assem_debug("stmia fp,{"); |
| 1506 | for(i=0;i<16;i++) |
| 1507 | if(reglist&(1<<i)) |
| 1508 | assem_debug("r%d,",i); |
| 1509 | assem_debug("}\n"); |
| 1510 | output_w32(0xe88b0000|reglist); |
| 1511 | } |
| 1512 | |
| 1513 | static void restore_regs_all(u_int reglist) |
| 1514 | { |
| 1515 | int i; |
| 1516 | if(!reglist) return; |
| 1517 | assem_debug("ldmia fp,{"); |
| 1518 | for(i=0;i<16;i++) |
| 1519 | if(reglist&(1<<i)) |
| 1520 | assem_debug("r%d,",i); |
| 1521 | assem_debug("}\n"); |
| 1522 | output_w32(0xe89b0000|reglist); |
| 1523 | } |
| 1524 | |
| 1525 | // Save registers before function call |
| 1526 | static void save_regs(u_int reglist) |
| 1527 | { |
| 1528 | reglist&=CALLER_SAVE_REGS; // only save the caller-save registers, r0-r3, r12 |
| 1529 | save_regs_all(reglist); |
| 1530 | } |
| 1531 | |
| 1532 | // Restore registers after function call |
| 1533 | static void restore_regs(u_int reglist) |
| 1534 | { |
| 1535 | reglist&=CALLER_SAVE_REGS; |
| 1536 | restore_regs_all(reglist); |
| 1537 | } |
| 1538 | |
| 1539 | /* Stubs/epilogue */ |
| 1540 | |
| 1541 | static void literal_pool(int n) |
| 1542 | { |
| 1543 | if(!literalcount) return; |
| 1544 | if(n) { |
| 1545 | if((int)out-literals[0][0]<4096-n) return; |
| 1546 | } |
| 1547 | u_int *ptr; |
| 1548 | int i; |
| 1549 | for(i=0;i<literalcount;i++) |
| 1550 | { |
| 1551 | u_int l_addr=(u_int)out; |
| 1552 | int j; |
| 1553 | for(j=0;j<i;j++) { |
| 1554 | if(literals[j][1]==literals[i][1]) { |
| 1555 | //printf("dup %08x\n",literals[i][1]); |
| 1556 | l_addr=literals[j][0]; |
| 1557 | break; |
| 1558 | } |
| 1559 | } |
| 1560 | ptr=(u_int *)literals[i][0]; |
| 1561 | u_int offset=l_addr-(u_int)ptr-8; |
| 1562 | assert(offset<4096); |
| 1563 | assert(!(offset&3)); |
| 1564 | *ptr|=offset; |
| 1565 | if(l_addr==(u_int)out) { |
| 1566 | literals[i][0]=l_addr; // remember for dupes |
| 1567 | output_w32(literals[i][1]); |
| 1568 | } |
| 1569 | } |
| 1570 | literalcount=0; |
| 1571 | } |
| 1572 | |
| 1573 | static void literal_pool_jumpover(int n) |
| 1574 | { |
| 1575 | if(!literalcount) return; |
| 1576 | if(n) { |
| 1577 | if((int)out-literals[0][0]<4096-n) return; |
| 1578 | } |
| 1579 | void *jaddr = out; |
| 1580 | emit_jmp(0); |
| 1581 | literal_pool(0); |
| 1582 | set_jump_target(jaddr, out); |
| 1583 | } |
| 1584 | |
| 1585 | // parsed by get_pointer, find_extjump_insn |
| 1586 | static void emit_extjump(u_char *addr, u_int target) |
| 1587 | { |
| 1588 | u_char *ptr=(u_char *)addr; |
| 1589 | assert((ptr[3]&0x0e)==0xa); |
| 1590 | (void)ptr; |
| 1591 | |
| 1592 | emit_loadlp(target,0); |
| 1593 | emit_loadlp((u_int)addr,1); |
| 1594 | assert(ndrc->translation_cache <= addr && |
| 1595 | addr < ndrc->translation_cache + sizeof(ndrc->translation_cache)); |
| 1596 | emit_far_jump(dyna_linker); |
| 1597 | } |
| 1598 | |
| 1599 | static void check_extjump2(void *src) |
| 1600 | { |
| 1601 | u_int *ptr = src; |
| 1602 | assert((ptr[1] & 0x0fff0000) == 0x059f0000); // ldr rx, [pc, #ofs] |
| 1603 | (void)ptr; |
| 1604 | } |
| 1605 | |
| 1606 | // put rt_val into rt, potentially making use of rs with value rs_val |
| 1607 | static void emit_movimm_from(u_int rs_val,int rs,u_int rt_val,int rt) |
| 1608 | { |
| 1609 | u_int armval; |
| 1610 | int diff; |
| 1611 | if(genimm(rt_val,&armval)) { |
| 1612 | assem_debug("mov %s,#%d\n",regname[rt],rt_val); |
| 1613 | output_w32(0xe3a00000|rd_rn_rm(rt,0,0)|armval); |
| 1614 | return; |
| 1615 | } |
| 1616 | if(genimm(~rt_val,&armval)) { |
| 1617 | assem_debug("mvn %s,#%d\n",regname[rt],rt_val); |
| 1618 | output_w32(0xe3e00000|rd_rn_rm(rt,0,0)|armval); |
| 1619 | return; |
| 1620 | } |
| 1621 | diff=rt_val-rs_val; |
| 1622 | if(genimm(diff,&armval)) { |
| 1623 | assem_debug("add %s,%s,#%d\n",regname[rt],regname[rs],diff); |
| 1624 | output_w32(0xe2800000|rd_rn_rm(rt,rs,0)|armval); |
| 1625 | return; |
| 1626 | }else if(genimm(-diff,&armval)) { |
| 1627 | assem_debug("sub %s,%s,#%d\n",regname[rt],regname[rs],-diff); |
| 1628 | output_w32(0xe2400000|rd_rn_rm(rt,rs,0)|armval); |
| 1629 | return; |
| 1630 | } |
| 1631 | emit_movimm(rt_val,rt); |
| 1632 | } |
| 1633 | |
| 1634 | // return 1 if above function can do it's job cheaply |
| 1635 | static int is_similar_value(u_int v1,u_int v2) |
| 1636 | { |
| 1637 | u_int xs; |
| 1638 | int diff; |
| 1639 | if(v1==v2) return 1; |
| 1640 | diff=v2-v1; |
| 1641 | for(xs=diff;xs!=0&&(xs&3)==0;xs>>=2) |
| 1642 | ; |
| 1643 | if(xs<0x100) return 1; |
| 1644 | for(xs=-diff;xs!=0&&(xs&3)==0;xs>>=2) |
| 1645 | ; |
| 1646 | if(xs<0x100) return 1; |
| 1647 | return 0; |
| 1648 | } |
| 1649 | |
| 1650 | static void mov_loadtype_adj(enum stub_type type,int rs,int rt) |
| 1651 | { |
| 1652 | switch(type) { |
| 1653 | case LOADB_STUB: emit_signextend8(rs,rt); break; |
| 1654 | case LOADBU_STUB: emit_andimm(rs,0xff,rt); break; |
| 1655 | case LOADH_STUB: emit_signextend16(rs,rt); break; |
| 1656 | case LOADHU_STUB: emit_andimm(rs,0xffff,rt); break; |
| 1657 | case LOADW_STUB: if(rs!=rt) emit_mov(rs,rt); break; |
| 1658 | default: assert(0); |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | #include "pcsxmem.h" |
| 1663 | #include "pcsxmem_inline.c" |
| 1664 | |
| 1665 | static void do_readstub(int n) |
| 1666 | { |
| 1667 | assem_debug("do_readstub %x\n",start+stubs[n].a*4); |
| 1668 | literal_pool(256); |
| 1669 | set_jump_target(stubs[n].addr, out); |
| 1670 | enum stub_type type=stubs[n].type; |
| 1671 | int i=stubs[n].a; |
| 1672 | int rs=stubs[n].b; |
| 1673 | const struct regstat *i_regs=(struct regstat *)stubs[n].c; |
| 1674 | u_int reglist=stubs[n].e; |
| 1675 | const signed char *i_regmap=i_regs->regmap; |
| 1676 | int rt; |
| 1677 | if(dops[i].itype==C2LS||dops[i].itype==LOADLR) { |
| 1678 | rt=get_reg(i_regmap,FTEMP); |
| 1679 | }else{ |
| 1680 | rt=get_reg(i_regmap,dops[i].rt1); |
| 1681 | } |
| 1682 | assert(rs>=0); |
| 1683 | int r,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
| 1684 | void *restore_jump = NULL; |
| 1685 | reglist|=(1<<rs); |
| 1686 | for(r=0;r<=12;r++) { |
| 1687 | if(((1<<r)&0x13ff)&&((1<<r)®list)==0) { |
| 1688 | temp=r; break; |
| 1689 | } |
| 1690 | } |
| 1691 | if(rt>=0&&dops[i].rt1!=0) |
| 1692 | reglist&=~(1<<rt); |
| 1693 | if(temp==-1) { |
| 1694 | save_regs(reglist); |
| 1695 | regs_saved=1; |
| 1696 | temp=(rs==0)?2:0; |
| 1697 | } |
| 1698 | if((regs_saved||(reglist&2)==0)&&temp!=1&&rs!=1) |
| 1699 | temp2=1; |
| 1700 | emit_readword(&mem_rtab,temp); |
| 1701 | emit_shrimm(rs,12,temp2); |
| 1702 | emit_readword_dualindexedx4(temp,temp2,temp2); |
| 1703 | emit_lsls_imm(temp2,1,temp2); |
| 1704 | if(dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
| 1705 | switch(type) { |
| 1706 | case LOADB_STUB: emit_ldrccsb_dualindexed(temp2,rs,rt); break; |
| 1707 | case LOADBU_STUB: emit_ldrccb_dualindexed(temp2,rs,rt); break; |
| 1708 | case LOADH_STUB: emit_ldrccsh_dualindexed(temp2,rs,rt); break; |
| 1709 | case LOADHU_STUB: emit_ldrcch_dualindexed(temp2,rs,rt); break; |
| 1710 | case LOADW_STUB: emit_ldrcc_dualindexed(temp2,rs,rt); break; |
| 1711 | default: assert(0); |
| 1712 | } |
| 1713 | } |
| 1714 | if(regs_saved) { |
| 1715 | restore_jump=out; |
| 1716 | emit_jcc(0); // jump to reg restore |
| 1717 | } |
| 1718 | else |
| 1719 | emit_jcc(stubs[n].retaddr); // return address |
| 1720 | |
| 1721 | if(!regs_saved) |
| 1722 | save_regs(reglist); |
| 1723 | void *handler=NULL; |
| 1724 | if(type==LOADB_STUB||type==LOADBU_STUB) |
| 1725 | handler=jump_handler_read8; |
| 1726 | if(type==LOADH_STUB||type==LOADHU_STUB) |
| 1727 | handler=jump_handler_read16; |
| 1728 | if(type==LOADW_STUB) |
| 1729 | handler=jump_handler_read32; |
| 1730 | assert(handler); |
| 1731 | pass_args(rs,temp2); |
| 1732 | int cc=get_reg(i_regmap,CCREG); |
| 1733 | if(cc<0) |
| 1734 | emit_loadreg(CCREG,2); |
| 1735 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
| 1736 | emit_far_call(handler); |
| 1737 | if(dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
| 1738 | mov_loadtype_adj(type,0,rt); |
| 1739 | } |
| 1740 | if(restore_jump) |
| 1741 | set_jump_target(restore_jump, out); |
| 1742 | restore_regs(reglist); |
| 1743 | emit_jmp(stubs[n].retaddr); // return address |
| 1744 | } |
| 1745 | |
| 1746 | static void inline_readstub(enum stub_type type, int i, u_int addr, |
| 1747 | const signed char regmap[], int target, int adj, u_int reglist) |
| 1748 | { |
| 1749 | int ra = cinfo[i].addr; |
| 1750 | int rt = get_reg(regmap,target); |
| 1751 | assert(ra >= 0); |
| 1752 | u_int is_dynamic; |
| 1753 | uintptr_t host_addr = 0; |
| 1754 | void *handler; |
| 1755 | int cc=get_reg(regmap,CCREG); |
| 1756 | if(pcsx_direct_read(type,addr,adj,cc,target?ra:-1,rt)) |
| 1757 | return; |
| 1758 | handler = get_direct_memhandler(mem_rtab, addr, type, &host_addr); |
| 1759 | if (handler == NULL) { |
| 1760 | if(rt<0||dops[i].rt1==0) |
| 1761 | return; |
| 1762 | if(addr!=host_addr) |
| 1763 | emit_movimm_from(addr,ra,host_addr,ra); |
| 1764 | switch(type) { |
| 1765 | case LOADB_STUB: emit_movsbl_indexed(0,ra,rt); break; |
| 1766 | case LOADBU_STUB: emit_movzbl_indexed(0,ra,rt); break; |
| 1767 | case LOADH_STUB: emit_movswl_indexed(0,ra,rt); break; |
| 1768 | case LOADHU_STUB: emit_movzwl_indexed(0,ra,rt); break; |
| 1769 | case LOADW_STUB: emit_readword_indexed(0,ra,rt); break; |
| 1770 | default: assert(0); |
| 1771 | } |
| 1772 | return; |
| 1773 | } |
| 1774 | is_dynamic=pcsxmem_is_handler_dynamic(addr); |
| 1775 | if(is_dynamic) { |
| 1776 | if(type==LOADB_STUB||type==LOADBU_STUB) |
| 1777 | handler=jump_handler_read8; |
| 1778 | if(type==LOADH_STUB||type==LOADHU_STUB) |
| 1779 | handler=jump_handler_read16; |
| 1780 | if(type==LOADW_STUB) |
| 1781 | handler=jump_handler_read32; |
| 1782 | } |
| 1783 | |
| 1784 | // call a memhandler |
| 1785 | if(rt>=0&&dops[i].rt1!=0) |
| 1786 | reglist&=~(1<<rt); |
| 1787 | save_regs(reglist); |
| 1788 | if(target==0) |
| 1789 | emit_movimm(addr,0); |
| 1790 | else if(ra!=0) |
| 1791 | emit_mov(ra,0); |
| 1792 | if(cc<0) |
| 1793 | emit_loadreg(CCREG,2); |
| 1794 | if(is_dynamic) { |
| 1795 | emit_movimm(((u_int *)mem_rtab)[addr>>12]<<1,1); |
| 1796 | emit_addimm(cc<0?2:cc,adj,2); |
| 1797 | } |
| 1798 | else { |
| 1799 | emit_readword(&last_count,3); |
| 1800 | emit_addimm(cc<0?2:cc,adj,2); |
| 1801 | emit_add(2,3,2); |
| 1802 | emit_writeword(2,&psxRegs.cycle); |
| 1803 | } |
| 1804 | |
| 1805 | emit_far_call(handler); |
| 1806 | |
| 1807 | if(rt>=0&&dops[i].rt1!=0) { |
| 1808 | switch(type) { |
| 1809 | case LOADB_STUB: emit_signextend8(0,rt); break; |
| 1810 | case LOADBU_STUB: emit_andimm(0,0xff,rt); break; |
| 1811 | case LOADH_STUB: emit_signextend16(0,rt); break; |
| 1812 | case LOADHU_STUB: emit_andimm(0,0xffff,rt); break; |
| 1813 | case LOADW_STUB: if(rt!=0) emit_mov(0,rt); break; |
| 1814 | default: assert(0); |
| 1815 | } |
| 1816 | } |
| 1817 | restore_regs(reglist); |
| 1818 | } |
| 1819 | |
| 1820 | static void do_writestub(int n) |
| 1821 | { |
| 1822 | assem_debug("do_writestub %x\n",start+stubs[n].a*4); |
| 1823 | literal_pool(256); |
| 1824 | set_jump_target(stubs[n].addr, out); |
| 1825 | enum stub_type type=stubs[n].type; |
| 1826 | int i=stubs[n].a; |
| 1827 | int rs=stubs[n].b; |
| 1828 | const struct regstat *i_regs=(struct regstat *)stubs[n].c; |
| 1829 | u_int reglist=stubs[n].e; |
| 1830 | const signed char *i_regmap=i_regs->regmap; |
| 1831 | int rt,r; |
| 1832 | if(dops[i].itype==C2LS) { |
| 1833 | rt=get_reg(i_regmap,r=FTEMP); |
| 1834 | }else{ |
| 1835 | rt=get_reg(i_regmap,r=dops[i].rs2); |
| 1836 | } |
| 1837 | assert(rs>=0); |
| 1838 | assert(rt>=0); |
| 1839 | int rtmp,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
| 1840 | void *restore_jump = NULL; |
| 1841 | int reglist2=reglist|(1<<rs)|(1<<rt); |
| 1842 | for(rtmp=0;rtmp<=12;rtmp++) { |
| 1843 | if(((1<<rtmp)&0x13ff)&&((1<<rtmp)®list2)==0) { |
| 1844 | temp=rtmp; break; |
| 1845 | } |
| 1846 | } |
| 1847 | if(temp==-1) { |
| 1848 | save_regs(reglist); |
| 1849 | regs_saved=1; |
| 1850 | for(rtmp=0;rtmp<=3;rtmp++) |
| 1851 | if(rtmp!=rs&&rtmp!=rt) |
| 1852 | {temp=rtmp;break;} |
| 1853 | } |
| 1854 | if((regs_saved||(reglist2&8)==0)&&temp!=3&&rs!=3&&rt!=3) |
| 1855 | temp2=3; |
| 1856 | emit_readword(&mem_wtab,temp); |
| 1857 | emit_shrimm(rs,12,temp2); |
| 1858 | emit_readword_dualindexedx4(temp,temp2,temp2); |
| 1859 | emit_lsls_imm(temp2,1,temp2); |
| 1860 | switch(type) { |
| 1861 | case STOREB_STUB: emit_strccb_dualindexed(temp2,rs,rt); break; |
| 1862 | case STOREH_STUB: emit_strcch_dualindexed(temp2,rs,rt); break; |
| 1863 | case STOREW_STUB: emit_strcc_dualindexed(temp2,rs,rt); break; |
| 1864 | default: assert(0); |
| 1865 | } |
| 1866 | if(regs_saved) { |
| 1867 | restore_jump=out; |
| 1868 | emit_jcc(0); // jump to reg restore |
| 1869 | } |
| 1870 | else |
| 1871 | emit_jcc(stubs[n].retaddr); // return address (invcode check) |
| 1872 | |
| 1873 | if(!regs_saved) |
| 1874 | save_regs(reglist); |
| 1875 | void *handler=NULL; |
| 1876 | switch(type) { |
| 1877 | case STOREB_STUB: handler=jump_handler_write8; break; |
| 1878 | case STOREH_STUB: handler=jump_handler_write16; break; |
| 1879 | case STOREW_STUB: handler=jump_handler_write32; break; |
| 1880 | default: assert(0); |
| 1881 | } |
| 1882 | assert(handler); |
| 1883 | pass_args(rs,rt); |
| 1884 | if(temp2!=3) |
| 1885 | emit_mov(temp2,3); |
| 1886 | int cc=get_reg(i_regmap,CCREG); |
| 1887 | if(cc<0) |
| 1888 | emit_loadreg(CCREG,2); |
| 1889 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
| 1890 | // returns new cycle_count |
| 1891 | emit_far_call(handler); |
| 1892 | emit_addimm(0,-(int)stubs[n].d,cc<0?2:cc); |
| 1893 | if(cc<0) |
| 1894 | emit_storereg(CCREG,2); |
| 1895 | if(restore_jump) |
| 1896 | set_jump_target(restore_jump, out); |
| 1897 | restore_regs(reglist); |
| 1898 | emit_jmp(stubs[n].retaddr); |
| 1899 | } |
| 1900 | |
| 1901 | static void inline_writestub(enum stub_type type, int i, u_int addr, |
| 1902 | const signed char regmap[], int target, int adj, u_int reglist) |
| 1903 | { |
| 1904 | int ra = cinfo[i].addr; |
| 1905 | int rt = get_reg(regmap, target); |
| 1906 | assert(ra>=0); |
| 1907 | assert(rt>=0); |
| 1908 | uintptr_t host_addr = 0; |
| 1909 | void *handler = get_direct_memhandler(mem_wtab, addr, type, &host_addr); |
| 1910 | if (handler == NULL) { |
| 1911 | if(addr!=host_addr) |
| 1912 | emit_movimm_from(addr,ra,host_addr,ra); |
| 1913 | switch(type) { |
| 1914 | case STOREB_STUB: emit_writebyte_indexed(rt,0,ra); break; |
| 1915 | case STOREH_STUB: emit_writehword_indexed(rt,0,ra); break; |
| 1916 | case STOREW_STUB: emit_writeword_indexed(rt,0,ra); break; |
| 1917 | default: assert(0); |
| 1918 | } |
| 1919 | return; |
| 1920 | } |
| 1921 | |
| 1922 | // call a memhandler |
| 1923 | save_regs(reglist); |
| 1924 | pass_args(ra,rt); |
| 1925 | int cc=get_reg(regmap,CCREG); |
| 1926 | if(cc<0) |
| 1927 | emit_loadreg(CCREG,2); |
| 1928 | emit_addimm(cc<0?2:cc,adj,2); |
| 1929 | emit_movimm((u_int)handler,3); |
| 1930 | // returns new cycle_count |
| 1931 | emit_far_call(jump_handler_write_h); |
| 1932 | emit_addimm(0,-adj,cc<0?2:cc); |
| 1933 | if(cc<0) |
| 1934 | emit_storereg(CCREG,2); |
| 1935 | restore_regs(reglist); |
| 1936 | } |
| 1937 | |
| 1938 | /* Special assem */ |
| 1939 | |
| 1940 | static void c2op_prologue(u_int op, int i, const struct regstat *i_regs, u_int reglist) |
| 1941 | { |
| 1942 | save_regs_all(reglist); |
| 1943 | cop2_do_stall_check(op, i, i_regs, 0); |
| 1944 | #ifdef PCNT |
| 1945 | emit_movimm(op, 0); |
| 1946 | emit_far_call(pcnt_gte_start); |
| 1947 | #endif |
| 1948 | emit_addimm(FP, (u_char *)&psxRegs.CP2D.r[0] - (u_char *)&dynarec_local, 0); // cop2 regs |
| 1949 | } |
| 1950 | |
| 1951 | static void c2op_epilogue(u_int op,u_int reglist) |
| 1952 | { |
| 1953 | #ifdef PCNT |
| 1954 | emit_movimm(op,0); |
| 1955 | emit_far_call(pcnt_gte_end); |
| 1956 | #endif |
| 1957 | restore_regs_all(reglist); |
| 1958 | } |
| 1959 | |
| 1960 | static void c2op_call_MACtoIR(int lm,int need_flags) |
| 1961 | { |
| 1962 | if(need_flags) |
| 1963 | emit_far_call(lm?gteMACtoIR_lm1:gteMACtoIR_lm0); |
| 1964 | else |
| 1965 | emit_far_call(lm?gteMACtoIR_lm1_nf:gteMACtoIR_lm0_nf); |
| 1966 | } |
| 1967 | |
| 1968 | static void c2op_call_rgb_func(void *func,int lm,int need_ir,int need_flags) |
| 1969 | { |
| 1970 | emit_far_call(func); |
| 1971 | // func is C code and trashes r0 |
| 1972 | emit_addimm(FP,(int)&psxRegs.CP2D.r[0]-(int)&dynarec_local,0); |
| 1973 | if(need_flags||need_ir) |
| 1974 | c2op_call_MACtoIR(lm,need_flags); |
| 1975 | emit_far_call(need_flags?gteMACtoRGB:gteMACtoRGB_nf); |
| 1976 | } |
| 1977 | |
| 1978 | static void c2op_assemble(int i, const struct regstat *i_regs) |
| 1979 | { |
| 1980 | u_int c2op = source[i] & 0x3f; |
| 1981 | u_int reglist_full = get_host_reglist(i_regs->regmap); |
| 1982 | u_int reglist = reglist_full & CALLER_SAVE_REGS; |
| 1983 | int need_flags, need_ir; |
| 1984 | |
| 1985 | if (gte_handlers[c2op]!=NULL) { |
| 1986 | need_flags=!(gte_unneeded[i+1]>>63); // +1 because of how liveness detection works |
| 1987 | need_ir=(gte_unneeded[i+1]&0xe00)!=0xe00; |
| 1988 | assem_debug("gte op %08x, unneeded %016llx, need_flags %d, need_ir %d\n", |
| 1989 | source[i],gte_unneeded[i+1],need_flags,need_ir); |
| 1990 | if(HACK_ENABLED(NDHACK_GTE_NO_FLAGS)) |
| 1991 | need_flags=0; |
| 1992 | int shift = (source[i] >> 19) & 1; |
| 1993 | int lm = (source[i] >> 10) & 1; |
| 1994 | switch(c2op) { |
| 1995 | #ifndef DRC_DBG |
| 1996 | case GTE_MVMVA: { |
| 1997 | #ifdef HAVE_ARMV5 |
| 1998 | int v = (source[i] >> 15) & 3; |
| 1999 | int cv = (source[i] >> 13) & 3; |
| 2000 | int mx = (source[i] >> 17) & 3; |
| 2001 | reglist=reglist_full&(CALLER_SAVE_REGS|0xf0); // +{r4-r7} |
| 2002 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2003 | /* r4,r5 = VXYZ(v) packed; r6 = &MX11(mx); r7 = &CV1(cv) */ |
| 2004 | if(v<3) |
| 2005 | emit_ldrd(v*8,0,4); |
| 2006 | else { |
| 2007 | emit_movzwl_indexed(9*4,0,4); // gteIR |
| 2008 | emit_movzwl_indexed(10*4,0,6); |
| 2009 | emit_movzwl_indexed(11*4,0,5); |
| 2010 | emit_orrshl_imm(6,16,4); |
| 2011 | } |
| 2012 | if(mx<3) |
| 2013 | emit_addimm(0,32*4+mx*8*4,6); |
| 2014 | else |
| 2015 | emit_readword(&zeromem_ptr,6); |
| 2016 | if(cv<3) |
| 2017 | emit_addimm(0,32*4+(cv*8+5)*4,7); |
| 2018 | else |
| 2019 | emit_readword(&zeromem_ptr,7); |
| 2020 | #ifdef __ARM_NEON__ |
| 2021 | emit_movimm(source[i],1); // opcode |
| 2022 | emit_far_call(gteMVMVA_part_neon); |
| 2023 | if(need_flags) { |
| 2024 | emit_movimm(lm,1); |
| 2025 | emit_far_call(gteMACtoIR_flags_neon); |
| 2026 | } |
| 2027 | #else |
| 2028 | if(cv==3&&shift) |
| 2029 | emit_far_call(gteMVMVA_part_cv3sh12_arm); |
| 2030 | else { |
| 2031 | emit_movimm(shift,1); |
| 2032 | emit_far_call(need_flags?gteMVMVA_part_arm:gteMVMVA_part_nf_arm); |
| 2033 | } |
| 2034 | if(need_flags||need_ir) |
| 2035 | c2op_call_MACtoIR(lm,need_flags); |
| 2036 | #endif |
| 2037 | #else /* if not HAVE_ARMV5 */ |
| 2038 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2039 | emit_movimm(source[i],1); // opcode |
| 2040 | emit_writeword(1,&psxRegs.code); |
| 2041 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
| 2042 | #endif |
| 2043 | break; |
| 2044 | } |
| 2045 | case GTE_OP: |
| 2046 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2047 | emit_far_call(shift?gteOP_part_shift:gteOP_part_noshift); |
| 2048 | if(need_flags||need_ir) { |
| 2049 | emit_addimm(FP,(int)&psxRegs.CP2D.r[0]-(int)&dynarec_local,0); |
| 2050 | c2op_call_MACtoIR(lm,need_flags); |
| 2051 | } |
| 2052 | break; |
| 2053 | case GTE_DPCS: |
| 2054 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2055 | c2op_call_rgb_func(shift?gteDPCS_part_shift:gteDPCS_part_noshift,lm,need_ir,need_flags); |
| 2056 | break; |
| 2057 | case GTE_INTPL: |
| 2058 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2059 | c2op_call_rgb_func(shift?gteINTPL_part_shift:gteINTPL_part_noshift,lm,need_ir,need_flags); |
| 2060 | break; |
| 2061 | case GTE_SQR: |
| 2062 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2063 | emit_far_call(shift?gteSQR_part_shift:gteSQR_part_noshift); |
| 2064 | if(need_flags||need_ir) { |
| 2065 | emit_addimm(FP,(int)&psxRegs.CP2D.r[0]-(int)&dynarec_local,0); |
| 2066 | c2op_call_MACtoIR(lm,need_flags); |
| 2067 | } |
| 2068 | break; |
| 2069 | case GTE_DCPL: |
| 2070 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2071 | c2op_call_rgb_func(gteDCPL_part,lm,need_ir,need_flags); |
| 2072 | break; |
| 2073 | case GTE_GPF: |
| 2074 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2075 | c2op_call_rgb_func(shift?gteGPF_part_shift:gteGPF_part_noshift,lm,need_ir,need_flags); |
| 2076 | break; |
| 2077 | case GTE_GPL: |
| 2078 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2079 | c2op_call_rgb_func(shift?gteGPL_part_shift:gteGPL_part_noshift,lm,need_ir,need_flags); |
| 2080 | break; |
| 2081 | #endif |
| 2082 | default: |
| 2083 | c2op_prologue(c2op,i,i_regs,reglist); |
| 2084 | #ifdef DRC_DBG |
| 2085 | emit_movimm(source[i],1); // opcode |
| 2086 | emit_writeword(1,&psxRegs.code); |
| 2087 | #endif |
| 2088 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
| 2089 | break; |
| 2090 | } |
| 2091 | c2op_epilogue(c2op,reglist); |
| 2092 | } |
| 2093 | } |
| 2094 | |
| 2095 | static void c2op_ctc2_31_assemble(signed char sl, signed char temp) |
| 2096 | { |
| 2097 | //value = value & 0x7ffff000; |
| 2098 | //if (value & 0x7f87e000) value |= 0x80000000; |
| 2099 | emit_shrimm(sl,12,temp); |
| 2100 | emit_shlimm(temp,12,temp); |
| 2101 | emit_testimm(temp,0x7f000000); |
| 2102 | emit_testeqimm(temp,0x00870000); |
| 2103 | emit_testeqimm(temp,0x0000e000); |
| 2104 | emit_orrne_imm(temp,0x80000000,temp); |
| 2105 | } |
| 2106 | |
| 2107 | static void do_mfc2_31_one(u_int copr,signed char temp) |
| 2108 | { |
| 2109 | emit_readword(®_cop2d[copr],temp); |
| 2110 | emit_lsls_imm(temp,16,temp); |
| 2111 | emit_cmovs_imm(0,temp); |
| 2112 | emit_cmpimm(temp,0xf80<<16); |
| 2113 | emit_andimm(temp,0xf80<<16,temp); |
| 2114 | emit_cmovae_imm(0xf80<<16,temp); |
| 2115 | } |
| 2116 | |
| 2117 | static void c2op_mfc2_29_assemble(signed char tl, signed char temp) |
| 2118 | { |
| 2119 | if (temp < 0) { |
| 2120 | host_tempreg_acquire(); |
| 2121 | temp = HOST_TEMPREG; |
| 2122 | } |
| 2123 | do_mfc2_31_one(9,temp); |
| 2124 | emit_shrimm(temp,7+16,tl); |
| 2125 | do_mfc2_31_one(10,temp); |
| 2126 | emit_orrshr_imm(temp,2+16,tl); |
| 2127 | do_mfc2_31_one(11,temp); |
| 2128 | emit_orrshr_imm(temp,-3+16,tl); |
| 2129 | emit_writeword(tl,®_cop2d[29]); |
| 2130 | if (temp == HOST_TEMPREG) |
| 2131 | host_tempreg_release(); |
| 2132 | } |
| 2133 | |
| 2134 | static void multdiv_assemble_arm(int i, const struct regstat *i_regs) |
| 2135 | { |
| 2136 | // case 0x18: MULT |
| 2137 | // case 0x19: MULTU |
| 2138 | // case 0x1A: DIV |
| 2139 | // case 0x1B: DIVU |
| 2140 | if(dops[i].rs1&&dops[i].rs2) |
| 2141 | { |
| 2142 | switch (dops[i].opcode2) |
| 2143 | { |
| 2144 | case 0x18: // MULT |
| 2145 | { |
| 2146 | signed char m1=get_reg(i_regs->regmap,dops[i].rs1); |
| 2147 | signed char m2=get_reg(i_regs->regmap,dops[i].rs2); |
| 2148 | signed char hi=get_reg(i_regs->regmap,HIREG); |
| 2149 | signed char lo=get_reg(i_regs->regmap,LOREG); |
| 2150 | assert(m1>=0); |
| 2151 | assert(m2>=0); |
| 2152 | assert(hi>=0); |
| 2153 | assert(lo>=0); |
| 2154 | emit_smull(m1,m2,hi,lo); |
| 2155 | } |
| 2156 | break; |
| 2157 | case 0x19: // MULTU |
| 2158 | { |
| 2159 | signed char m1=get_reg(i_regs->regmap,dops[i].rs1); |
| 2160 | signed char m2=get_reg(i_regs->regmap,dops[i].rs2); |
| 2161 | signed char hi=get_reg(i_regs->regmap,HIREG); |
| 2162 | signed char lo=get_reg(i_regs->regmap,LOREG); |
| 2163 | assert(m1>=0); |
| 2164 | assert(m2>=0); |
| 2165 | assert(hi>=0); |
| 2166 | assert(lo>=0); |
| 2167 | emit_umull(m1,m2,hi,lo); |
| 2168 | } |
| 2169 | break; |
| 2170 | case 0x1A: // DIV |
| 2171 | { |
| 2172 | signed char d1=get_reg(i_regs->regmap,dops[i].rs1); |
| 2173 | signed char d2=get_reg(i_regs->regmap,dops[i].rs2); |
| 2174 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
| 2175 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
| 2176 | void *jaddr_div0; |
| 2177 | assert(d1>=0); |
| 2178 | assert(d2>=0); |
| 2179 | assert(quotient>=0); |
| 2180 | assert(remainder>=0); |
| 2181 | emit_movs(d1,remainder); |
| 2182 | emit_movimm(0xffffffff,quotient); |
| 2183 | emit_negmi(quotient,quotient); // .. quotient and .. |
| 2184 | emit_negmi(remainder,remainder); // .. remainder for div0 case (will be negated back after jump) |
| 2185 | emit_movs(d2,HOST_TEMPREG); |
| 2186 | jaddr_div0 = out; |
| 2187 | emit_jeq(0); // Division by zero |
| 2188 | emit_negsmi(HOST_TEMPREG,HOST_TEMPREG); |
| 2189 | #ifdef HAVE_ARMV5 |
| 2190 | emit_clz(HOST_TEMPREG,quotient); |
| 2191 | emit_shl(HOST_TEMPREG,quotient,HOST_TEMPREG); // shifted divisor |
| 2192 | #else |
| 2193 | emit_movimm(0,quotient); |
| 2194 | emit_addpl_imm(quotient,1,quotient); |
| 2195 | emit_lslpls_imm(HOST_TEMPREG,1,HOST_TEMPREG); |
| 2196 | emit_jns(out-2*4); |
| 2197 | #endif |
| 2198 | emit_orimm(quotient,1<<31,quotient); |
| 2199 | emit_shr(quotient,quotient,quotient); |
| 2200 | emit_cmp(remainder,HOST_TEMPREG); |
| 2201 | emit_subcs(remainder,HOST_TEMPREG,remainder); |
| 2202 | emit_adcs(quotient,quotient,quotient); |
| 2203 | emit_shrimm(HOST_TEMPREG,1,HOST_TEMPREG); |
| 2204 | emit_jcc(out-16); // -4 |
| 2205 | emit_teq(d1,d2); |
| 2206 | emit_negmi(quotient,quotient); |
| 2207 | set_jump_target(jaddr_div0, out); |
| 2208 | emit_test(d1,d1); |
| 2209 | emit_negmi(remainder,remainder); |
| 2210 | } |
| 2211 | break; |
| 2212 | case 0x1B: // DIVU |
| 2213 | { |
| 2214 | signed char d1=get_reg(i_regs->regmap,dops[i].rs1); // dividend |
| 2215 | signed char d2=get_reg(i_regs->regmap,dops[i].rs2); // divisor |
| 2216 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
| 2217 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
| 2218 | void *jaddr_div0; |
| 2219 | assert(d1>=0); |
| 2220 | assert(d2>=0); |
| 2221 | assert(quotient>=0); |
| 2222 | assert(remainder>=0); |
| 2223 | emit_mov(d1,remainder); |
| 2224 | emit_movimm(0xffffffff,quotient); // div0 case |
| 2225 | emit_test(d2,d2); |
| 2226 | jaddr_div0 = out; |
| 2227 | emit_jeq(0); // Division by zero |
| 2228 | #ifdef HAVE_ARMV5 |
| 2229 | emit_clz(d2,HOST_TEMPREG); |
| 2230 | emit_movimm(1<<31,quotient); |
| 2231 | emit_shl(d2,HOST_TEMPREG,d2); |
| 2232 | #else |
| 2233 | emit_movimm(0,HOST_TEMPREG); |
| 2234 | emit_addpl_imm(HOST_TEMPREG,1,HOST_TEMPREG); |
| 2235 | emit_lslpls_imm(d2,1,d2); |
| 2236 | emit_jns(out-2*4); |
| 2237 | emit_movimm(1<<31,quotient); |
| 2238 | #endif |
| 2239 | emit_shr(quotient,HOST_TEMPREG,quotient); |
| 2240 | emit_cmp(remainder,d2); |
| 2241 | emit_subcs(remainder,d2,remainder); |
| 2242 | emit_adcs(quotient,quotient,quotient); |
| 2243 | emit_shrcc_imm(d2,1,d2); |
| 2244 | emit_jcc(out-16); // -4 |
| 2245 | set_jump_target(jaddr_div0, out); |
| 2246 | } |
| 2247 | break; |
| 2248 | } |
| 2249 | } |
| 2250 | else |
| 2251 | { |
| 2252 | signed char hr=get_reg(i_regs->regmap,HIREG); |
| 2253 | signed char lr=get_reg(i_regs->regmap,LOREG); |
| 2254 | if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs2==0) // div 0 |
| 2255 | { |
| 2256 | if (dops[i].rs1) { |
| 2257 | signed char numerator = get_reg(i_regs->regmap, dops[i].rs1); |
| 2258 | assert(numerator >= 0); |
| 2259 | if (hr < 0) |
| 2260 | hr = HOST_TEMPREG; |
| 2261 | emit_movs(numerator, hr); |
| 2262 | if (lr >= 0) { |
| 2263 | if (dops[i].opcode2 == 0x1A) { // DIV |
| 2264 | emit_movimm(0xffffffff, lr); |
| 2265 | emit_negmi(lr, lr); |
| 2266 | } |
| 2267 | else |
| 2268 | emit_movimm(~0, lr); |
| 2269 | } |
| 2270 | } |
| 2271 | else { |
| 2272 | if (hr >= 0) emit_zeroreg(hr); |
| 2273 | if (lr >= 0) emit_movimm(~0,lr); |
| 2274 | } |
| 2275 | } |
| 2276 | else if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs1==0) |
| 2277 | { |
| 2278 | signed char denominator = get_reg(i_regs->regmap, dops[i].rs2); |
| 2279 | assert(denominator >= 0); |
| 2280 | if (hr >= 0) emit_zeroreg(hr); |
| 2281 | if (lr >= 0) { |
| 2282 | emit_zeroreg(lr); |
| 2283 | emit_test(denominator, denominator); |
| 2284 | emit_mvneq(lr, lr); |
| 2285 | } |
| 2286 | } |
| 2287 | else |
| 2288 | { |
| 2289 | // Multiply by zero is zero. |
| 2290 | if (hr >= 0) emit_zeroreg(hr); |
| 2291 | if (lr >= 0) emit_zeroreg(lr); |
| 2292 | } |
| 2293 | } |
| 2294 | } |
| 2295 | #define multdiv_assemble multdiv_assemble_arm |
| 2296 | |
| 2297 | static void do_jump_vaddr(int rs) |
| 2298 | { |
| 2299 | emit_far_jump(jump_vaddr_reg[rs]); |
| 2300 | } |
| 2301 | |
| 2302 | static void do_preload_rhash(int r) { |
| 2303 | // Don't need this for ARM. On x86, this puts the value 0xf8 into the |
| 2304 | // register. On ARM the hash can be done with a single instruction (below) |
| 2305 | } |
| 2306 | |
| 2307 | static void do_preload_rhtbl(int ht) { |
| 2308 | emit_addimm(FP,(int)&mini_ht-(int)&dynarec_local,ht); |
| 2309 | } |
| 2310 | |
| 2311 | static void do_rhash(int rs,int rh) { |
| 2312 | emit_andimm(rs,0xf8,rh); |
| 2313 | } |
| 2314 | |
| 2315 | static void do_miniht_load(int ht,int rh) { |
| 2316 | assem_debug("ldr %s,[%s,%s]!\n",regname[rh],regname[ht],regname[rh]); |
| 2317 | output_w32(0xe7b00000|rd_rn_rm(rh,ht,rh)); |
| 2318 | } |
| 2319 | |
| 2320 | static void do_miniht_jump(int rs,int rh,int ht) { |
| 2321 | emit_cmp(rh,rs); |
| 2322 | emit_ldreq_indexed(ht,4,15); |
| 2323 | #ifdef CORTEX_A8_BRANCH_PREDICTION_HACK |
| 2324 | if(rs!=7) |
| 2325 | emit_mov(rs,7); |
| 2326 | rs=7; |
| 2327 | #endif |
| 2328 | do_jump_vaddr(rs); |
| 2329 | } |
| 2330 | |
| 2331 | static void do_miniht_insert(u_int return_address,int rt,int temp) { |
| 2332 | #ifndef HAVE_ARMV7 |
| 2333 | emit_movimm(return_address,rt); // PC into link register |
| 2334 | add_to_linker(out,return_address,1); |
| 2335 | emit_pcreladdr(temp); |
| 2336 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
| 2337 | emit_writeword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
| 2338 | #else |
| 2339 | emit_movw(return_address&0x0000FFFF,rt); |
| 2340 | add_to_linker(out,return_address,1); |
| 2341 | emit_pcreladdr(temp); |
| 2342 | emit_writeword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
| 2343 | emit_movt(return_address&0xFFFF0000,rt); |
| 2344 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
| 2345 | #endif |
| 2346 | } |
| 2347 | |
| 2348 | // CPU-architecture-specific initialization |
| 2349 | static void arch_init(void) |
| 2350 | { |
| 2351 | uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops - 8; |
| 2352 | struct tramp_insns *ops = ndrc->tramp.ops; |
| 2353 | size_t i; |
| 2354 | assert(!(diff & 3)); |
| 2355 | assert(diff < 0x1000); |
| 2356 | start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
| 2357 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.ops); i++) |
| 2358 | ops[i].ldrpc = 0xe5900000 | rd_rn_rm(15,15,0) | diff; // ldr pc, [=val] |
| 2359 | end_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
| 2360 | } |
| 2361 | |
| 2362 | // vim:shiftwidth=2:expandtab |