sljitNativeARM_T2_32.c revision 1.2
1/* $NetBSD: sljitNativeARM_T2_32.c,v 1.2 2014/06/17 19:33:20 alnsn Exp $ */ 2 3/* 4 * Stack-less Just-In-Time compiler 5 * 6 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without modification, are 9 * permitted provided that the following conditions are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright notice, this list of 12 * conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 15 * of conditions and the following disclaimer in the documentation and/or other materials 16 * provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 21 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name(void) 30{ 31 return "ARM-Thumb2" SLJIT_CPUINFO; 32} 33 34/* Length of an instruction word. */ 35typedef sljit_ui sljit_ins; 36 37/* Last register + 1. */ 38#define TMP_REG1 (SLJIT_NO_REGISTERS + 1) 39#define TMP_REG2 (SLJIT_NO_REGISTERS + 2) 40#define TMP_REG3 (SLJIT_NO_REGISTERS + 3) 41#define TMP_PC (SLJIT_NO_REGISTERS + 4) 42 43#define TMP_FREG1 (0) 44#define TMP_FREG2 (SLJIT_FLOAT_REG6 + 1) 45 46/* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */ 47static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = { 48 0, 0, 1, 2, 12, 5, 6, 7, 8, 10, 11, 13, 3, 4, 14, 15 49}; 50 51#define COPY_BITS(src, from, to, bits) \ 52 ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to)) 53 54/* Thumb16 encodings. */ 55#define RD3(rd) (reg_map[rd]) 56#define RN3(rn) (reg_map[rn] << 3) 57#define RM3(rm) (reg_map[rm] << 6) 58#define RDN3(rdn) (reg_map[rdn] << 8) 59#define IMM3(imm) (imm << 6) 60#define IMM8(imm) (imm) 61 62/* Thumb16 helpers. */ 63#define SET_REGS44(rd, rn) \ 64 ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4)) 65#define IS_2_LO_REGS(reg1, reg2) \ 66 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7) 67#define IS_3_LO_REGS(reg1, reg2, reg3) \ 68 (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7) 69 70/* Thumb32 encodings. */ 71#define RD4(rd) (reg_map[rd] << 8) 72#define RN4(rn) (reg_map[rn] << 16) 73#define RM4(rm) (reg_map[rm]) 74#define RT4(rt) (reg_map[rt] << 12) 75#define DD4(dd) ((dd) << 12) 76#define DN4(dn) ((dn) << 16) 77#define DM4(dm) (dm) 78#define IMM5(imm) \ 79 (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6)) 80#define IMM12(imm) \ 81 (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)) 82 83/* --------------------------------------------------------------------- */ 84/* Instrucion forms */ 85/* --------------------------------------------------------------------- */ 86 87/* dot '.' changed to _ 88 I immediate form (possibly followed by number of immediate bits). */ 89#define ADCI 0xf1400000 90#define ADCS 0x4140 91#define ADC_W 0xeb400000 92#define ADD 0x4400 93#define ADDS 0x1800 94#define ADDSI3 0x1c00 95#define ADDSI8 0x3000 96#define ADD_W 0xeb000000 97#define ADDWI 0xf2000000 98#define ADD_SP 0xb000 99#define ADD_W 0xeb000000 100#define ADD_WI 0xf1000000 101#define ANDI 0xf0000000 102#define ANDS 0x4000 103#define AND_W 0xea000000 104#define ASRS 0x4100 105#define ASRSI 0x1000 106#define ASR_W 0xfa40f000 107#define ASR_WI 0xea4f0020 108#define BICI 0xf0200000 109#define BKPT 0xbe00 110#define BLX 0x4780 111#define BX 0x4700 112#define CLZ 0xfab0f080 113#define CMPI 0x2800 114#define CMP_W 0xebb00f00 115#define EORI 0xf0800000 116#define EORS 0x4040 117#define EOR_W 0xea800000 118#define IT 0xbf00 119#define LSLS 0x4080 120#define LSLSI 0x0000 121#define LSL_W 0xfa00f000 122#define LSL_WI 0xea4f0000 123#define LSRS 0x40c0 124#define LSRSI 0x0800 125#define LSR_W 0xfa20f000 126#define LSR_WI 0xea4f0010 127#define MOV 0x4600 128#define MOVS 0x0000 129#define MOVSI 0x2000 130#define MOVT 0xf2c00000 131#define MOVW 0xf2400000 132#define MOV_W 0xea4f0000 133#define MOV_WI 0xf04f0000 134#define MUL 0xfb00f000 135#define MVNS 0x43c0 136#define MVN_W 0xea6f0000 137#define MVN_WI 0xf06f0000 138#define NOP 0xbf00 139#define ORNI 0xf0600000 140#define ORRI 0xf0400000 141#define ORRS 0x4300 142#define ORR_W 0xea400000 143#define POP 0xbd00 144#define POP_W 0xe8bd0000 145#define PUSH 0xb500 146#define PUSH_W 0xe92d0000 147#define RSB_WI 0xf1c00000 148#define RSBSI 0x4240 149#define SBCI 0xf1600000 150#define SBCS 0x4180 151#define SBC_W 0xeb600000 152#define SMULL 0xfb800000 153#define STR_SP 0x9000 154#define SUBS 0x1a00 155#define SUBSI3 0x1e00 156#define SUBSI8 0x3800 157#define SUB_W 0xeba00000 158#define SUBWI 0xf2a00000 159#define SUB_SP 0xb080 160#define SUB_WI 0xf1a00000 161#define SXTB 0xb240 162#define SXTB_W 0xfa4ff080 163#define SXTH 0xb200 164#define SXTH_W 0xfa0ff080 165#define TST 0x4200 166#define UMULL 0xfba00000 167#define UXTB 0xb2c0 168#define UXTB_W 0xfa5ff080 169#define UXTH 0xb280 170#define UXTH_W 0xfa1ff080 171#define VABS_F32 0xeeb00ac0 172#define VADD_F32 0xee300a00 173#define VCMP_F32 0xeeb40a40 174#define VDIV_F32 0xee800a00 175#define VMOV_F32 0xeeb00a40 176#define VMRS 0xeef1fa10 177#define VMUL_F32 0xee200a00 178#define VNEG_F32 0xeeb10a40 179#define VSTR_F32 0xed000a00 180#define VSUB_F32 0xee300a40 181 182static sljit_si push_inst16(struct sljit_compiler *compiler, sljit_ins inst) 183{ 184 sljit_uh *ptr; 185 SLJIT_ASSERT(!(inst & 0xffff0000)); 186 187 ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_uh)); 188 FAIL_IF(!ptr); 189 *ptr = inst; 190 compiler->size++; 191 return SLJIT_SUCCESS; 192} 193 194static sljit_si push_inst32(struct sljit_compiler *compiler, sljit_ins inst) 195{ 196 sljit_uh *ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_ins)); 197 FAIL_IF(!ptr); 198 *ptr++ = inst >> 16; 199 *ptr = inst; 200 compiler->size += 2; 201 return SLJIT_SUCCESS; 202} 203 204static SLJIT_INLINE sljit_si emit_imm32_const(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm) 205{ 206 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) | 207 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))); 208 return push_inst32(compiler, MOVT | RD4(dst) | 209 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16)); 210} 211 212static SLJIT_INLINE void modify_imm32_const(sljit_uh *inst, sljit_uw new_imm) 213{ 214 sljit_si dst = inst[1] & 0x0f00; 215 SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00)); 216 inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1); 217 inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff); 218 inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1); 219 inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16); 220} 221 222static SLJIT_INLINE sljit_si detect_jump_type(struct sljit_jump *jump, sljit_uh *code_ptr, sljit_uh *code) 223{ 224 sljit_sw diff; 225 226 if (jump->flags & SLJIT_REWRITABLE_JUMP) 227 return 0; 228 229 if (jump->flags & JUMP_ADDR) { 230 /* Branch to ARM code is not optimized yet. */ 231 if (!(jump->u.target & 0x1)) 232 return 0; 233 diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2)) >> 1; 234 } 235 else { 236 SLJIT_ASSERT(jump->flags & JUMP_LABEL); 237 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1; 238 } 239 240 if (jump->flags & IS_COND) { 241 SLJIT_ASSERT(!(jump->flags & IS_BL)); 242 if (diff <= 127 && diff >= -128) { 243 jump->flags |= PATCH_TYPE1; 244 return 5; 245 } 246 if (diff <= 524287 && diff >= -524288) { 247 jump->flags |= PATCH_TYPE2; 248 return 4; 249 } 250 /* +1 comes from the prefix IT instruction. */ 251 diff--; 252 if (diff <= 8388607 && diff >= -8388608) { 253 jump->flags |= PATCH_TYPE3; 254 return 3; 255 } 256 } 257 else if (jump->flags & IS_BL) { 258 if (diff <= 8388607 && diff >= -8388608) { 259 jump->flags |= PATCH_BL; 260 return 3; 261 } 262 } 263 else { 264 if (diff <= 1023 && diff >= -1024) { 265 jump->flags |= PATCH_TYPE4; 266 return 4; 267 } 268 if (diff <= 8388607 && diff >= -8388608) { 269 jump->flags |= PATCH_TYPE5; 270 return 3; 271 } 272 } 273 274 return 0; 275} 276 277static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump) 278{ 279 sljit_si type = (jump->flags >> 4) & 0xf; 280 sljit_sw diff; 281 sljit_uh *jump_inst; 282 sljit_si s, j1, j2; 283 284 if (SLJIT_UNLIKELY(type == 0)) { 285 modify_imm32_const((sljit_uh*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target); 286 return; 287 } 288 289 if (jump->flags & JUMP_ADDR) { 290 SLJIT_ASSERT(jump->u.target & 0x1); 291 diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + 4)) >> 1; 292 } 293 else 294 diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + 4)) >> 1; 295 jump_inst = (sljit_uh*)jump->addr; 296 297 switch (type) { 298 case 1: 299 /* Encoding T1 of 'B' instruction */ 300 SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND)); 301 jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff); 302 return; 303 case 2: 304 /* Encoding T3 of 'B' instruction */ 305 SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND)); 306 jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1); 307 jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff); 308 return; 309 case 3: 310 SLJIT_ASSERT(jump->flags & IS_COND); 311 *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8; 312 diff--; 313 type = 5; 314 break; 315 case 4: 316 /* Encoding T2 of 'B' instruction */ 317 SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND)); 318 jump_inst[0] = 0xe000 | (diff & 0x7ff); 319 return; 320 } 321 322 SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608); 323 324 /* Really complex instruction form for branches. */ 325 s = (diff >> 23) & 0x1; 326 j1 = (~(diff >> 21) ^ s) & 0x1; 327 j2 = (~(diff >> 22) ^ s) & 0x1; 328 jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10); 329 jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff); 330 331 /* The others have a common form. */ 332 if (type == 5) /* Encoding T4 of 'B' instruction */ 333 jump_inst[1] |= 0x9000; 334 else if (type == 6) /* Encoding T1 of 'BL' instruction */ 335 jump_inst[1] |= 0xd000; 336 else 337 SLJIT_ASSERT_STOP(); 338} 339 340SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) 341{ 342 struct sljit_memory_fragment *buf; 343 sljit_uh *code; 344 sljit_uh *code_ptr; 345 sljit_uh *buf_ptr; 346 sljit_uh *buf_end; 347 sljit_uw half_count; 348 349 struct sljit_label *label; 350 struct sljit_jump *jump; 351 struct sljit_const *const_; 352 353 CHECK_ERROR_PTR(); 354 check_sljit_generate_code(compiler); 355 reverse_buf(compiler); 356 357 code = (sljit_uh*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_uh)); 358 PTR_FAIL_WITH_EXEC_IF(code); 359 buf = compiler->buf; 360 361 code_ptr = code; 362 half_count = 0; 363 label = compiler->labels; 364 jump = compiler->jumps; 365 const_ = compiler->consts; 366 367 do { 368 buf_ptr = (sljit_uh*)buf->memory; 369 buf_end = buf_ptr + (buf->used_size >> 1); 370 do { 371 *code_ptr = *buf_ptr++; 372 /* These structures are ordered by their address. */ 373 SLJIT_ASSERT(!label || label->size >= half_count); 374 SLJIT_ASSERT(!jump || jump->addr >= half_count); 375 SLJIT_ASSERT(!const_ || const_->addr >= half_count); 376 if (label && label->size == half_count) { 377 label->addr = ((sljit_uw)code_ptr) | 0x1; 378 label->size = code_ptr - code; 379 label = label->next; 380 } 381 if (jump && jump->addr == half_count) { 382 jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8); 383 code_ptr -= detect_jump_type(jump, code_ptr, code); 384 jump = jump->next; 385 } 386 if (const_ && const_->addr == half_count) { 387 const_->addr = (sljit_uw)code_ptr; 388 const_ = const_->next; 389 } 390 code_ptr ++; 391 half_count ++; 392 } while (buf_ptr < buf_end); 393 394 buf = buf->next; 395 } while (buf); 396 397 if (label && label->size == half_count) { 398 label->addr = ((sljit_uw)code_ptr) | 0x1; 399 label->size = code_ptr - code; 400 label = label->next; 401 } 402 403 SLJIT_ASSERT(!label); 404 SLJIT_ASSERT(!jump); 405 SLJIT_ASSERT(!const_); 406 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size); 407 408 jump = compiler->jumps; 409 while (jump) { 410 set_jump_instruction(jump); 411 jump = jump->next; 412 } 413 414 compiler->error = SLJIT_ERR_COMPILED; 415 compiler->executable_size = (code_ptr - code) * sizeof(sljit_uh); 416 SLJIT_CACHE_FLUSH(code, code_ptr); 417 /* Set thumb mode flag. */ 418 return (void*)((sljit_uw)code | 0x1); 419} 420 421/* --------------------------------------------------------------------- */ 422/* Core code generator functions. */ 423/* --------------------------------------------------------------------- */ 424 425#define INVALID_IMM 0x80000000 426static sljit_uw get_imm(sljit_uw imm) 427{ 428 /* Thumb immediate form. */ 429 sljit_si counter; 430 431 if (imm <= 0xff) 432 return imm; 433 434 if ((imm & 0xffff) == (imm >> 16)) { 435 /* Some special cases. */ 436 if (!(imm & 0xff00)) 437 return (1 << 12) | (imm & 0xff); 438 if (!(imm & 0xff)) 439 return (2 << 12) | ((imm >> 8) & 0xff); 440 if ((imm & 0xff00) == ((imm & 0xff) << 8)) 441 return (3 << 12) | (imm & 0xff); 442 } 443 444 /* Assembly optimization: count leading zeroes? */ 445 counter = 8; 446 if (!(imm & 0xffff0000)) { 447 counter += 16; 448 imm <<= 16; 449 } 450 if (!(imm & 0xff000000)) { 451 counter += 8; 452 imm <<= 8; 453 } 454 if (!(imm & 0xf0000000)) { 455 counter += 4; 456 imm <<= 4; 457 } 458 if (!(imm & 0xc0000000)) { 459 counter += 2; 460 imm <<= 2; 461 } 462 if (!(imm & 0x80000000)) { 463 counter += 1; 464 imm <<= 1; 465 } 466 /* Since imm >= 128, this must be true. */ 467 SLJIT_ASSERT(counter <= 31); 468 469 if (imm & 0x00ffffff) 470 return INVALID_IMM; /* Cannot be encoded. */ 471 472 return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1); 473} 474 475static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst, sljit_uw imm) 476{ 477 sljit_uw tmp; 478 479 if (imm >= 0x10000) { 480 tmp = get_imm(imm); 481 if (tmp != INVALID_IMM) 482 return push_inst32(compiler, MOV_WI | RD4(dst) | tmp); 483 tmp = get_imm(~imm); 484 if (tmp != INVALID_IMM) 485 return push_inst32(compiler, MVN_WI | RD4(dst) | tmp); 486 } 487 488 /* set low 16 bits, set hi 16 bits to 0. */ 489 FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) | 490 COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))); 491 492 /* set hi 16 bit if needed. */ 493 if (imm >= 0x10000) 494 return push_inst32(compiler, MOVT | RD4(dst) | 495 COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16)); 496 return SLJIT_SUCCESS; 497} 498 499#define ARG1_IMM 0x0010000 500#define ARG2_IMM 0x0020000 501#define KEEP_FLAGS 0x0040000 502/* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */ 503#define SET_FLAGS 0x0100000 504#define UNUSED_RETURN 0x0200000 505#define SLOW_DEST 0x0400000 506#define SLOW_SRC1 0x0800000 507#define SLOW_SRC2 0x1000000 508 509static sljit_si emit_op_imm(struct sljit_compiler *compiler, sljit_si flags, sljit_si dst, sljit_uw arg1, sljit_uw arg2) 510{ 511 /* dst must be register, TMP_REG1 512 arg1 must be register, TMP_REG1, imm 513 arg2 must be register, TMP_REG2, imm */ 514 sljit_si reg; 515 sljit_uw imm, nimm; 516 517 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) { 518 /* Both are immediates. */ 519 flags &= ~ARG1_IMM; 520 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); 521 arg1 = TMP_REG1; 522 } 523 524 if (flags & (ARG1_IMM | ARG2_IMM)) { 525 reg = (flags & ARG2_IMM) ? arg1 : arg2; 526 imm = (flags & ARG2_IMM) ? arg2 : arg1; 527 528 switch (flags & 0xffff) { 529 case SLJIT_CLZ: 530 case SLJIT_MUL: 531 /* No form with immediate operand. */ 532 break; 533 case SLJIT_MOV: 534 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1); 535 return load_immediate(compiler, dst, imm); 536 case SLJIT_NOT: 537 if (!(flags & SET_FLAGS)) 538 return load_immediate(compiler, dst, ~imm); 539 /* Since the flags should be set, we just fallback to the register mode. 540 Although some clever things could be done here, "NOT IMM" does not worth the efforts. */ 541 break; 542 case SLJIT_ADD: 543 nimm = -imm; 544 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) { 545 if (imm <= 0x7) 546 return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg)); 547 if (nimm <= 0x7) 548 return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg)); 549 if (reg == dst) { 550 if (imm <= 0xff) 551 return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst)); 552 if (nimm <= 0xff) 553 return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst)); 554 } 555 } 556 if (!(flags & SET_FLAGS)) { 557 if (imm <= 0xfff) 558 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm)); 559 if (nimm <= 0xfff) 560 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm)); 561 } 562 imm = get_imm(imm); 563 if (imm != INVALID_IMM) 564 return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 565 break; 566 case SLJIT_ADDC: 567 imm = get_imm(imm); 568 if (imm != INVALID_IMM) 569 return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 570 break; 571 case SLJIT_SUB: 572 if (flags & ARG1_IMM) { 573 if (!(flags & KEEP_FLAGS) && imm == 0 && IS_2_LO_REGS(reg, dst)) 574 return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg)); 575 imm = get_imm(imm); 576 if (imm != INVALID_IMM) 577 return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 578 break; 579 } 580 nimm = -imm; 581 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) { 582 if (imm <= 0x7) 583 return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg)); 584 if (nimm <= 0x7) 585 return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg)); 586 if (reg == dst) { 587 if (imm <= 0xff) 588 return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst)); 589 if (nimm <= 0xff) 590 return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst)); 591 } 592 if (imm <= 0xff && (flags & UNUSED_RETURN)) 593 return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg)); 594 } 595 if (!(flags & SET_FLAGS)) { 596 if (imm <= 0xfff) 597 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm)); 598 if (nimm <= 0xfff) 599 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm)); 600 } 601 imm = get_imm(imm); 602 if (imm != INVALID_IMM) 603 return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 604 break; 605 case SLJIT_SUBC: 606 if (flags & ARG1_IMM) 607 break; 608 imm = get_imm(imm); 609 if (imm != INVALID_IMM) 610 return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 611 break; 612 case SLJIT_AND: 613 nimm = get_imm(imm); 614 if (nimm != INVALID_IMM) 615 return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); 616 imm = get_imm(imm); 617 if (imm != INVALID_IMM) 618 return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 619 break; 620 case SLJIT_OR: 621 nimm = get_imm(imm); 622 if (nimm != INVALID_IMM) 623 return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); 624 imm = get_imm(imm); 625 if (imm != INVALID_IMM) 626 return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 627 break; 628 case SLJIT_XOR: 629 imm = get_imm(imm); 630 if (imm != INVALID_IMM) 631 return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); 632 break; 633 case SLJIT_SHL: 634 case SLJIT_LSHR: 635 case SLJIT_ASHR: 636 if (flags & ARG1_IMM) 637 break; 638 imm &= 0x1f; 639 if (imm == 0) { 640 if (!(flags & SET_FLAGS)) 641 return push_inst16(compiler, MOV | SET_REGS44(dst, reg)); 642 if (IS_2_LO_REGS(dst, reg)) 643 return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg)); 644 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg)); 645 } 646 switch (flags & 0xffff) { 647 case SLJIT_SHL: 648 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg)) 649 return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6)); 650 return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); 651 case SLJIT_LSHR: 652 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg)) 653 return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6)); 654 return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); 655 default: /* SLJIT_ASHR */ 656 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg)) 657 return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6)); 658 return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); 659 } 660 default: 661 SLJIT_ASSERT_STOP(); 662 break; 663 } 664 665 if (flags & ARG2_IMM) { 666 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2)); 667 arg2 = TMP_REG2; 668 } 669 else { 670 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); 671 arg1 = TMP_REG1; 672 } 673 } 674 675 /* Both arguments are registers. */ 676 switch (flags & 0xffff) { 677 case SLJIT_MOV: 678 case SLJIT_MOV_UI: 679 case SLJIT_MOV_SI: 680 case SLJIT_MOV_P: 681 case SLJIT_MOVU: 682 case SLJIT_MOVU_UI: 683 case SLJIT_MOVU_SI: 684 case SLJIT_MOVU_P: 685 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 686 if (dst == arg2) 687 return SLJIT_SUCCESS; 688 return push_inst16(compiler, MOV | SET_REGS44(dst, arg2)); 689 case SLJIT_MOV_UB: 690 case SLJIT_MOVU_UB: 691 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 692 if (IS_2_LO_REGS(dst, arg2)) 693 return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2)); 694 return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2)); 695 case SLJIT_MOV_SB: 696 case SLJIT_MOVU_SB: 697 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 698 if (IS_2_LO_REGS(dst, arg2)) 699 return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2)); 700 return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2)); 701 case SLJIT_MOV_UH: 702 case SLJIT_MOVU_UH: 703 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 704 if (IS_2_LO_REGS(dst, arg2)) 705 return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2)); 706 return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2)); 707 case SLJIT_MOV_SH: 708 case SLJIT_MOVU_SH: 709 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 710 if (IS_2_LO_REGS(dst, arg2)) 711 return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2)); 712 return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2)); 713 case SLJIT_NOT: 714 SLJIT_ASSERT(arg1 == TMP_REG1); 715 if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 716 return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2)); 717 return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2)); 718 case SLJIT_CLZ: 719 SLJIT_ASSERT(arg1 == TMP_REG1); 720 FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2))); 721 if (flags & SET_FLAGS) { 722 if (reg_map[dst] <= 7) 723 return push_inst16(compiler, CMPI | RDN3(dst)); 724 return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst)); 725 } 726 return SLJIT_SUCCESS; 727 case SLJIT_ADD: 728 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2)) 729 return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2)); 730 if (dst == arg1 && !(flags & SET_FLAGS)) 731 return push_inst16(compiler, ADD | SET_REGS44(dst, arg2)); 732 return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 733 case SLJIT_ADDC: 734 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 735 return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2)); 736 return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 737 case SLJIT_SUB: 738 if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2)) 739 return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2)); 740 return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 741 case SLJIT_SUBC: 742 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 743 return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2)); 744 return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 745 case SLJIT_MUL: 746 if (!(flags & SET_FLAGS)) 747 return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2)); 748 SLJIT_ASSERT(reg_map[TMP_REG2] <= 7 && dst != TMP_REG2); 749 FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2))); 750 /* cmp TMP_REG2, dst asr #31. */ 751 return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst)); 752 case SLJIT_AND: 753 if (!(flags & KEEP_FLAGS)) { 754 if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) 755 return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2)); 756 if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2)) 757 return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2)); 758 } 759 return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 760 case SLJIT_OR: 761 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 762 return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2)); 763 return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 764 case SLJIT_XOR: 765 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 766 return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2)); 767 return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 768 case SLJIT_SHL: 769 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 770 return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2)); 771 return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 772 case SLJIT_LSHR: 773 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 774 return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2)); 775 return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 776 case SLJIT_ASHR: 777 if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2)) 778 return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2)); 779 return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); 780 } 781 782 SLJIT_ASSERT_STOP(); 783 return SLJIT_SUCCESS; 784} 785 786#define STORE 0x01 787#define SIGNED 0x02 788 789#define WORD_SIZE 0x00 790#define BYTE_SIZE 0x04 791#define HALF_SIZE 0x08 792 793#define UPDATE 0x10 794#define ARG_TEST 0x20 795 796#define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE))) 797#define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift))) 798 799/* 800 1st letter: 801 w = word 802 b = byte 803 h = half 804 805 2nd letter: 806 s = signed 807 u = unsigned 808 809 3rd letter: 810 l = load 811 s = store 812*/ 813 814static SLJIT_CONST sljit_ins sljit_mem16[12] = { 815/* w u l */ 0x5800 /* ldr */, 816/* w u s */ 0x5000 /* str */, 817/* w s l */ 0x5800 /* ldr */, 818/* w s s */ 0x5000 /* str */, 819 820/* b u l */ 0x5c00 /* ldrb */, 821/* b u s */ 0x5400 /* strb */, 822/* b s l */ 0x5600 /* ldrsb */, 823/* b s s */ 0x5400 /* strb */, 824 825/* h u l */ 0x5a00 /* ldrh */, 826/* h u s */ 0x5200 /* strh */, 827/* h s l */ 0x5e00 /* ldrsh */, 828/* h s s */ 0x5200 /* strh */, 829}; 830 831static SLJIT_CONST sljit_ins sljit_mem16_imm5[12] = { 832/* w u l */ 0x6800 /* ldr imm5 */, 833/* w u s */ 0x6000 /* str imm5 */, 834/* w s l */ 0x6800 /* ldr imm5 */, 835/* w s s */ 0x6000 /* str imm5 */, 836 837/* b u l */ 0x7800 /* ldrb imm5 */, 838/* b u s */ 0x7000 /* strb imm5 */, 839/* b s l */ 0x0000 /* not allowed */, 840/* b s s */ 0x7000 /* strb imm5 */, 841 842/* h u l */ 0x8800 /* ldrh imm5 */, 843/* h u s */ 0x8000 /* strh imm5 */, 844/* h s l */ 0x0000 /* not allowed */, 845/* h s s */ 0x8000 /* strh imm5 */, 846}; 847 848#define MEM_IMM8 0xc00 849#define MEM_IMM12 0x800000 850static SLJIT_CONST sljit_ins sljit_mem32[12] = { 851/* w u l */ 0xf8500000 /* ldr.w */, 852/* w u s */ 0xf8400000 /* str.w */, 853/* w s l */ 0xf8500000 /* ldr.w */, 854/* w s s */ 0xf8400000 /* str.w */, 855 856/* b u l */ 0xf8100000 /* ldrb.w */, 857/* b u s */ 0xf8000000 /* strb.w */, 858/* b s l */ 0xf9100000 /* ldrsb.w */, 859/* b s s */ 0xf8000000 /* strb.w */, 860 861/* h u l */ 0xf8300000 /* ldrh.w */, 862/* h u s */ 0xf8200000 /* strsh.w */, 863/* h s l */ 0xf9300000 /* ldrsh.w */, 864/* h s s */ 0xf8200000 /* strsh.w */, 865}; 866 867/* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */ 868static sljit_si emit_set_delta(struct sljit_compiler *compiler, sljit_si dst, sljit_si reg, sljit_sw value) 869{ 870 if (value >= 0) { 871 if (value <= 0xfff) 872 return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value)); 873 value = get_imm(value); 874 if (value != INVALID_IMM) 875 return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value); 876 } 877 else { 878 value = -value; 879 if (value <= 0xfff) 880 return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value)); 881 value = get_imm(value); 882 if (value != INVALID_IMM) 883 return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value); 884 } 885 return SLJIT_ERR_UNSUPPORTED; 886} 887 888/* Can perform an operation using at most 1 instruction. */ 889static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw) 890{ 891 sljit_si other_r, shift; 892 893 SLJIT_ASSERT(arg & SLJIT_MEM); 894 895 if (SLJIT_UNLIKELY(flags & UPDATE)) { 896 if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 0xff && argw >= -0xff) { 897 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 898 return 1; 899 900 flags &= ~UPDATE; 901 arg &= 0xf; 902 if (argw >= 0) 903 argw |= 0x200; 904 else { 905 argw = -argw; 906 } 907 908 SLJIT_ASSERT(argw >= 0 && (argw & 0xff) <= 0xff); 909 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | 0x100 | argw)); 910 return -1; 911 } 912 return 0; 913 } 914 915 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { 916 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 917 return 1; 918 919 argw &= 0x3; 920 other_r = OFFS_REG(arg); 921 arg &= 0xf; 922 923 if (!argw && IS_3_LO_REGS(reg, arg, other_r)) 924 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r))); 925 else 926 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4))); 927 return -1; 928 } 929 930 if (!(arg & REG_MASK) || argw > 0xfff || argw < -0xff) 931 return 0; 932 933 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 934 return 1; 935 936 arg &= 0xf; 937 if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) { 938 shift = 3; 939 if (IS_WORD_SIZE(flags)) { 940 if (OFFSET_CHECK(0x1f, 2)) 941 shift = 2; 942 } 943 else if (flags & BYTE_SIZE) 944 { 945 if (OFFSET_CHECK(0x1f, 0)) 946 shift = 0; 947 } 948 else { 949 SLJIT_ASSERT(flags & HALF_SIZE); 950 if (OFFSET_CHECK(0x1f, 1)) 951 shift = 1; 952 } 953 954 if (shift != 3) { 955 FAIL_IF(push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - shift)))); 956 return -1; 957 } 958 } 959 960 /* SP based immediate. */ 961 if (SLJIT_UNLIKELY(arg == SLJIT_LOCALS_REG) && OFFSET_CHECK(0xff, 2) && IS_WORD_SIZE(flags) && reg_map[reg] <= 7) { 962 FAIL_IF(push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2))); 963 return -1; 964 } 965 966 if (argw >= 0) 967 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw)); 968 else 969 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw)); 970 return -1; 971} 972 973/* see getput_arg below. 974 Note: can_cache is called only for binary operators. Those 975 operators always uses word arguments without write back. */ 976static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw) 977{ 978 sljit_sw diff; 979 if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM)) 980 return 0; 981 982 if (!(arg & REG_MASK)) { 983 diff = argw - next_argw; 984 if (diff <= 0xfff && diff >= -0xfff) 985 return 1; 986 return 0; 987 } 988 989 if (argw == next_argw) 990 return 1; 991 992 diff = argw - next_argw; 993 if (arg == next_arg && diff <= 0xfff && diff >= -0xfff) 994 return 1; 995 996 return 0; 997} 998 999/* Emit the necessary instructions. See can_cache above. */ 1000static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, 1001 sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw) 1002{ 1003 sljit_si tmp_r, other_r; 1004 sljit_sw diff; 1005 1006 SLJIT_ASSERT(arg & SLJIT_MEM); 1007 if (!(next_arg & SLJIT_MEM)) { 1008 next_arg = 0; 1009 next_argw = 0; 1010 } 1011 1012 tmp_r = (flags & STORE) ? TMP_REG3 : reg; 1013 1014 if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) { 1015 /* Update only applies if a base register exists. */ 1016 /* There is no caching here. */ 1017 other_r = OFFS_REG(arg); 1018 arg &= 0xf; 1019 flags &= ~UPDATE; 1020 1021 if (!other_r) { 1022 if (!(argw & ~0xfff)) { 1023 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw)); 1024 return push_inst32(compiler, ADDWI | RD4(arg) | RN4(arg) | IMM12(argw)); 1025 } 1026 1027 if (compiler->cache_arg == SLJIT_MEM) { 1028 if (argw == compiler->cache_argw) { 1029 other_r = TMP_REG3; 1030 argw = 0; 1031 } 1032 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { 1033 FAIL_IF(compiler->error); 1034 compiler->cache_argw = argw; 1035 other_r = TMP_REG3; 1036 argw = 0; 1037 } 1038 } 1039 1040 if (argw) { 1041 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 1042 compiler->cache_arg = SLJIT_MEM; 1043 compiler->cache_argw = argw; 1044 other_r = TMP_REG3; 1045 argw = 0; 1046 } 1047 } 1048 1049 argw &= 0x3; 1050 if (!argw && IS_3_LO_REGS(reg, arg, other_r)) { 1051 FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r))); 1052 return push_inst16(compiler, ADD | SET_REGS44(arg, other_r)); 1053 } 1054 FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4))); 1055 return push_inst32(compiler, ADD_W | RD4(arg) | RN4(arg) | RM4(other_r) | (argw << 6)); 1056 } 1057 flags &= ~UPDATE; 1058 1059 SLJIT_ASSERT(!(arg & OFFS_REG_MASK)); 1060 1061 if (compiler->cache_arg == arg) { 1062 diff = argw - compiler->cache_argw; 1063 if (!(diff & ~0xfff)) 1064 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | diff); 1065 if (!((compiler->cache_argw - argw) & ~0xff)) 1066 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(TMP_REG3) | (compiler->cache_argw - argw)); 1067 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) { 1068 FAIL_IF(compiler->error); 1069 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0); 1070 } 1071 } 1072 1073 next_arg = (arg & REG_MASK) && (arg == next_arg) && (argw != next_argw); 1074 arg &= 0xf; 1075 if (arg && compiler->cache_arg == SLJIT_MEM) { 1076 if (compiler->cache_argw == argw) 1077 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3)); 1078 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { 1079 FAIL_IF(compiler->error); 1080 compiler->cache_argw = argw; 1081 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3)); 1082 } 1083 } 1084 1085 compiler->cache_argw = argw; 1086 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) { 1087 FAIL_IF(compiler->error); 1088 compiler->cache_arg = SLJIT_MEM | arg; 1089 arg = 0; 1090 } 1091 else { 1092 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 1093 compiler->cache_arg = SLJIT_MEM; 1094 1095 diff = argw - next_argw; 1096 if (next_arg && diff <= 0xfff && diff >= -0xfff) { 1097 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, arg))); 1098 compiler->cache_arg = SLJIT_MEM | arg; 1099 arg = 0; 1100 } 1101 } 1102 1103 if (arg) 1104 return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3)); 1105 return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0); 1106} 1107 1108static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw) 1109{ 1110 if (getput_arg_fast(compiler, flags, reg, arg, argw)) 1111 return compiler->error; 1112 compiler->cache_arg = 0; 1113 compiler->cache_argw = 0; 1114 return getput_arg(compiler, flags, reg, arg, argw, 0, 0); 1115} 1116 1117static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w) 1118{ 1119 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w)) 1120 return compiler->error; 1121 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w); 1122} 1123 1124/* --------------------------------------------------------------------- */ 1125/* Entry, exit */ 1126/* --------------------------------------------------------------------- */ 1127 1128SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size) 1129{ 1130 sljit_si size; 1131 sljit_ins push; 1132 1133 CHECK_ERROR(); 1134 check_sljit_emit_enter(compiler, args, scratches, saveds, local_size); 1135 1136 compiler->scratches = scratches; 1137 compiler->saveds = saveds; 1138#if (defined SLJIT_DEBUG && SLJIT_DEBUG) 1139 compiler->logical_local_size = local_size; 1140#endif 1141 1142 push = (1 << 4); 1143 if (saveds >= 5) 1144 push |= 1 << 11; 1145 if (saveds >= 4) 1146 push |= 1 << 10; 1147 if (saveds >= 3) 1148 push |= 1 << 8; 1149 if (saveds >= 2) 1150 push |= 1 << 7; 1151 if (saveds >= 1) 1152 push |= 1 << 6; 1153 if (scratches >= 5) 1154 push |= 1 << 5; 1155 FAIL_IF(saveds >= 3 1156 ? push_inst32(compiler, PUSH_W | (1 << 14) | push) 1157 : push_inst16(compiler, PUSH | push)); 1158 1159 /* Stack must be aligned to 8 bytes: */ 1160 size = (3 + saveds) * sizeof(sljit_uw); 1161 local_size += size; 1162 local_size = (local_size + 7) & ~7; 1163 local_size -= size; 1164 compiler->local_size = local_size; 1165 if (local_size > 0) { 1166 if (local_size <= (127 << 2)) 1167 FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2))); 1168 else 1169 FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, local_size)); 1170 } 1171 1172 if (args >= 1) 1173 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG1, SLJIT_SCRATCH_REG1))); 1174 if (args >= 2) 1175 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG2, SLJIT_SCRATCH_REG2))); 1176 if (args >= 3) 1177 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SAVED_REG3, SLJIT_SCRATCH_REG3))); 1178 1179 return SLJIT_SUCCESS; 1180} 1181 1182SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size) 1183{ 1184 sljit_si size; 1185 1186 CHECK_ERROR_VOID(); 1187 check_sljit_set_context(compiler, args, scratches, saveds, local_size); 1188 1189 compiler->scratches = scratches; 1190 compiler->saveds = saveds; 1191#if (defined SLJIT_DEBUG && SLJIT_DEBUG) 1192 compiler->logical_local_size = local_size; 1193#endif 1194 1195 size = (3 + saveds) * sizeof(sljit_uw); 1196 local_size += size; 1197 local_size = (local_size + 7) & ~7; 1198 local_size -= size; 1199 compiler->local_size = local_size; 1200} 1201 1202SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw) 1203{ 1204 sljit_ins pop; 1205 1206 CHECK_ERROR(); 1207 check_sljit_emit_return(compiler, op, src, srcw); 1208 1209 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); 1210 1211 if (compiler->local_size > 0) { 1212 if (compiler->local_size <= (127 << 2)) 1213 FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2))); 1214 else 1215 FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, compiler->local_size)); 1216 } 1217 1218 pop = (1 << 4); 1219 if (compiler->saveds >= 5) 1220 pop |= 1 << 11; 1221 if (compiler->saveds >= 4) 1222 pop |= 1 << 10; 1223 if (compiler->saveds >= 3) 1224 pop |= 1 << 8; 1225 if (compiler->saveds >= 2) 1226 pop |= 1 << 7; 1227 if (compiler->saveds >= 1) 1228 pop |= 1 << 6; 1229 if (compiler->scratches >= 5) 1230 pop |= 1 << 5; 1231 return compiler->saveds >= 3 1232 ? push_inst32(compiler, POP_W | (1 << 15) | pop) 1233 : push_inst16(compiler, POP | pop); 1234} 1235 1236/* --------------------------------------------------------------------- */ 1237/* Operators */ 1238/* --------------------------------------------------------------------- */ 1239 1240#ifdef __cplusplus 1241extern "C" { 1242#endif 1243 1244#if defined(__GNUC__) 1245extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator); 1246extern int __aeabi_idivmod(int numerator, int denominator); 1247#else 1248#error "Software divmod functions are needed" 1249#endif 1250 1251#ifdef __cplusplus 1252} 1253#endif 1254 1255SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op) 1256{ 1257 CHECK_ERROR(); 1258 check_sljit_emit_op0(compiler, op); 1259 1260 op = GET_OPCODE(op); 1261 switch (op) { 1262 case SLJIT_BREAKPOINT: 1263 return push_inst16(compiler, BKPT); 1264 case SLJIT_NOP: 1265 return push_inst16(compiler, NOP); 1266 case SLJIT_UMUL: 1267 case SLJIT_SMUL: 1268 return push_inst32(compiler, (op == SLJIT_UMUL ? UMULL : SMULL) 1269 | (reg_map[SLJIT_SCRATCH_REG2] << 8) 1270 | (reg_map[SLJIT_SCRATCH_REG1] << 12) 1271 | (reg_map[SLJIT_SCRATCH_REG1] << 16) 1272 | reg_map[SLJIT_SCRATCH_REG2]); 1273 case SLJIT_UDIV: 1274 case SLJIT_SDIV: 1275 if (compiler->scratches >= 4) { 1276 FAIL_IF(push_inst32(compiler, 0xf84d2d04 /* str r2, [sp, #-4]! */)); 1277 FAIL_IF(push_inst32(compiler, 0xf84dcd04 /* str ip, [sp, #-4]! */)); 1278 } else if (compiler->scratches >= 3) 1279 FAIL_IF(push_inst32(compiler, 0xf84d2d08 /* str r2, [sp, #-8]! */)); 1280#if defined(__GNUC__) 1281 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM, 1282 (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod)))); 1283#else 1284#error "Software divmod functions are needed" 1285#endif 1286 if (compiler->scratches >= 4) { 1287 FAIL_IF(push_inst32(compiler, 0xf85dcb04 /* ldr ip, [sp], #4 */)); 1288 return push_inst32(compiler, 0xf85d2b04 /* ldr r2, [sp], #4 */); 1289 } else if (compiler->scratches >= 3) 1290 return push_inst32(compiler, 0xf85d2b08 /* ldr r2, [sp], #8 */); 1291 return SLJIT_SUCCESS; 1292 } 1293 1294 return SLJIT_SUCCESS; 1295} 1296 1297SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op, 1298 sljit_si dst, sljit_sw dstw, 1299 sljit_si src, sljit_sw srcw) 1300{ 1301 sljit_si dst_r, flags; 1302 sljit_si op_flags = GET_ALL_FLAGS(op); 1303 1304 CHECK_ERROR(); 1305 check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw); 1306 ADJUST_LOCAL_OFFSET(dst, dstw); 1307 ADJUST_LOCAL_OFFSET(src, srcw); 1308 1309 compiler->cache_arg = 0; 1310 compiler->cache_argw = 0; 1311 1312 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1313 1314 op = GET_OPCODE(op); 1315 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) { 1316 switch (op) { 1317 case SLJIT_MOV: 1318 case SLJIT_MOV_UI: 1319 case SLJIT_MOV_SI: 1320 case SLJIT_MOV_P: 1321 flags = WORD_SIZE; 1322 break; 1323 case SLJIT_MOV_UB: 1324 flags = BYTE_SIZE; 1325 if (src & SLJIT_IMM) 1326 srcw = (sljit_ub)srcw; 1327 break; 1328 case SLJIT_MOV_SB: 1329 flags = BYTE_SIZE | SIGNED; 1330 if (src & SLJIT_IMM) 1331 srcw = (sljit_sb)srcw; 1332 break; 1333 case SLJIT_MOV_UH: 1334 flags = HALF_SIZE; 1335 if (src & SLJIT_IMM) 1336 srcw = (sljit_uh)srcw; 1337 break; 1338 case SLJIT_MOV_SH: 1339 flags = HALF_SIZE | SIGNED; 1340 if (src & SLJIT_IMM) 1341 srcw = (sljit_sh)srcw; 1342 break; 1343 case SLJIT_MOVU: 1344 case SLJIT_MOVU_UI: 1345 case SLJIT_MOVU_SI: 1346 case SLJIT_MOVU_P: 1347 flags = WORD_SIZE | UPDATE; 1348 break; 1349 case SLJIT_MOVU_UB: 1350 flags = BYTE_SIZE | UPDATE; 1351 if (src & SLJIT_IMM) 1352 srcw = (sljit_ub)srcw; 1353 break; 1354 case SLJIT_MOVU_SB: 1355 flags = BYTE_SIZE | SIGNED | UPDATE; 1356 if (src & SLJIT_IMM) 1357 srcw = (sljit_sb)srcw; 1358 break; 1359 case SLJIT_MOVU_UH: 1360 flags = HALF_SIZE | UPDATE; 1361 if (src & SLJIT_IMM) 1362 srcw = (sljit_uh)srcw; 1363 break; 1364 case SLJIT_MOVU_SH: 1365 flags = HALF_SIZE | SIGNED | UPDATE; 1366 if (src & SLJIT_IMM) 1367 srcw = (sljit_sh)srcw; 1368 break; 1369 default: 1370 SLJIT_ASSERT_STOP(); 1371 flags = 0; 1372 break; 1373 } 1374 1375 if (src & SLJIT_IMM) 1376 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw)); 1377 else if (src & SLJIT_MEM) { 1378 if (getput_arg_fast(compiler, flags, dst_r, src, srcw)) 1379 FAIL_IF(compiler->error); 1380 else 1381 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw)); 1382 } else { 1383 if (dst_r != TMP_REG1) 1384 return emit_op_imm(compiler, op, dst_r, TMP_REG1, src); 1385 dst_r = src; 1386 } 1387 1388 if (dst & SLJIT_MEM) { 1389 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw)) 1390 return compiler->error; 1391 else 1392 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0); 1393 } 1394 return SLJIT_SUCCESS; 1395 } 1396 1397 if (op == SLJIT_NEG) { 1398#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG) 1399 compiler->skip_checks = 1; 1400#endif 1401 return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw); 1402 } 1403 1404 flags = (GET_FLAGS(op_flags) ? SET_FLAGS : 0) | ((op_flags & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0); 1405 if (src & SLJIT_MEM) { 1406 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src, srcw)) 1407 FAIL_IF(compiler->error); 1408 else 1409 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw)); 1410 src = TMP_REG2; 1411 } 1412 1413 if (src & SLJIT_IMM) 1414 flags |= ARG2_IMM; 1415 else 1416 srcw = src; 1417 1418 emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw); 1419 1420 if (dst & SLJIT_MEM) { 1421 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw)) 1422 return compiler->error; 1423 else 1424 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0); 1425 } 1426 return SLJIT_SUCCESS; 1427} 1428 1429SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op, 1430 sljit_si dst, sljit_sw dstw, 1431 sljit_si src1, sljit_sw src1w, 1432 sljit_si src2, sljit_sw src2w) 1433{ 1434 sljit_si dst_r, flags; 1435 1436 CHECK_ERROR(); 1437 check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w); 1438 ADJUST_LOCAL_OFFSET(dst, dstw); 1439 ADJUST_LOCAL_OFFSET(src1, src1w); 1440 ADJUST_LOCAL_OFFSET(src2, src2w); 1441 1442 compiler->cache_arg = 0; 1443 compiler->cache_argw = 0; 1444 1445 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1446 flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0); 1447 1448 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, WORD_SIZE | STORE | ARG_TEST, TMP_REG1, dst, dstw)) 1449 flags |= SLOW_DEST; 1450 1451 if (src1 & SLJIT_MEM) { 1452 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG1, src1, src1w)) 1453 FAIL_IF(compiler->error); 1454 else 1455 flags |= SLOW_SRC1; 1456 } 1457 if (src2 & SLJIT_MEM) { 1458 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src2, src2w)) 1459 FAIL_IF(compiler->error); 1460 else 1461 flags |= SLOW_SRC2; 1462 } 1463 1464 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) { 1465 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) { 1466 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, src1, src1w)); 1467 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw)); 1468 } 1469 else { 1470 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, src2, src2w)); 1471 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw)); 1472 } 1473 } 1474 else if (flags & SLOW_SRC1) 1475 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw)); 1476 else if (flags & SLOW_SRC2) 1477 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw)); 1478 1479 if (src1 & SLJIT_MEM) 1480 src1 = TMP_REG1; 1481 if (src2 & SLJIT_MEM) 1482 src2 = TMP_REG2; 1483 1484 if (src1 & SLJIT_IMM) 1485 flags |= ARG1_IMM; 1486 else 1487 src1w = src1; 1488 if (src2 & SLJIT_IMM) 1489 flags |= ARG2_IMM; 1490 else 1491 src2w = src2; 1492 1493 if (dst == SLJIT_UNUSED) 1494 flags |= UNUSED_RETURN; 1495 1496 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w); 1497 1498 if (dst & SLJIT_MEM) { 1499 if (!(flags & SLOW_DEST)) { 1500 getput_arg_fast(compiler, WORD_SIZE | STORE, dst_r, dst, dstw); 1501 return compiler->error; 1502 } 1503 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, 0, 0); 1504 } 1505 return SLJIT_SUCCESS; 1506} 1507 1508SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg) 1509{ 1510 check_sljit_get_register_index(reg); 1511 return reg_map[reg]; 1512} 1513 1514SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg) 1515{ 1516 check_sljit_get_float_register_index(reg); 1517 return reg; 1518} 1519 1520SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler, 1521 void *instruction, sljit_si size) 1522{ 1523 CHECK_ERROR(); 1524 check_sljit_emit_op_custom(compiler, instruction, size); 1525 SLJIT_ASSERT(size == 2 || size == 4); 1526 1527 if (size == 2) 1528 return push_inst16(compiler, *(sljit_uh*)instruction); 1529 return push_inst32(compiler, *(sljit_ins*)instruction); 1530} 1531 1532/* --------------------------------------------------------------------- */ 1533/* Floating point operators */ 1534/* --------------------------------------------------------------------- */ 1535 1536SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void) 1537{ 1538#ifdef SLJIT_IS_FPU_AVAILABLE 1539 return SLJIT_IS_FPU_AVAILABLE; 1540#else 1541 /* Available by default. */ 1542 return 1; 1543#endif 1544} 1545 1546#define FPU_LOAD (1 << 20) 1547 1548static sljit_si emit_fop_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw) 1549{ 1550 sljit_sw tmp; 1551 sljit_uw imm; 1552 sljit_sw inst = VSTR_F32 | (flags & (SLJIT_SINGLE_OP | FPU_LOAD)); 1553 1554 SLJIT_ASSERT(arg & SLJIT_MEM); 1555 1556 /* Fast loads and stores. */ 1557 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { 1558 FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG2) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6))); 1559 arg = SLJIT_MEM | TMP_REG2; 1560 argw = 0; 1561 } 1562 1563 if ((arg & REG_MASK) && (argw & 0x3) == 0) { 1564 if (!(argw & ~0x3fc)) 1565 return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2)); 1566 if (!(-argw & ~0x3fc)) 1567 return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2)); 1568 } 1569 1570 /* Slow cases */ 1571 SLJIT_ASSERT(!(arg & OFFS_REG_MASK)); 1572 if (compiler->cache_arg == arg) { 1573 tmp = argw - compiler->cache_argw; 1574 if (!(tmp & ~0x3fc)) 1575 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg) | (tmp >> 2)); 1576 if (!(-tmp & ~0x3fc)) 1577 return push_inst32(compiler, inst | RN4(TMP_REG3) | DD4(reg) | (-tmp >> 2)); 1578 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) { 1579 FAIL_IF(compiler->error); 1580 compiler->cache_argw = argw; 1581 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg)); 1582 } 1583 } 1584 1585 if (arg & REG_MASK) { 1586 if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) { 1587 FAIL_IF(compiler->error); 1588 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg)); 1589 } 1590 imm = get_imm(argw & ~0x3fc); 1591 if (imm != INVALID_IMM) { 1592 FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm)); 1593 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2)); 1594 } 1595 imm = get_imm(-argw & ~0x3fc); 1596 if (imm != INVALID_IMM) { 1597 argw = -argw; 1598 FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm)); 1599 return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2)); 1600 } 1601 } 1602 1603 compiler->cache_arg = arg; 1604 compiler->cache_argw = argw; 1605 1606 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 1607 if (arg & REG_MASK) 1608 FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, (arg & REG_MASK)))); 1609 return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg)); 1610} 1611 1612SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op, 1613 sljit_si dst, sljit_sw dstw, 1614 sljit_si src, sljit_sw srcw) 1615{ 1616 sljit_si dst_r; 1617 1618 CHECK_ERROR(); 1619 check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw); 1620 SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100), float_transfer_bit_error); 1621 1622 compiler->cache_arg = 0; 1623 compiler->cache_argw = 0; 1624 op ^= SLJIT_SINGLE_OP; 1625 1626 if (GET_OPCODE(op) == SLJIT_CMPD) { 1627 if (dst & SLJIT_MEM) { 1628 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, dst, dstw); 1629 dst = TMP_FREG1; 1630 } 1631 if (src & SLJIT_MEM) { 1632 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src, srcw); 1633 src = TMP_FREG2; 1634 } 1635 FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst) | DM4(src))); 1636 return push_inst32(compiler, VMRS); 1637 } 1638 1639 dst_r = (dst <= REG_MASK) ? dst : TMP_FREG1; 1640 if (src & SLJIT_MEM) { 1641 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, dst_r, src, srcw); 1642 src = dst_r; 1643 } 1644 1645 switch (GET_OPCODE(op)) { 1646 case SLJIT_MOVD: 1647 if (src != dst_r) 1648 FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src))); 1649 break; 1650 case SLJIT_NEGD: 1651 FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src))); 1652 break; 1653 case SLJIT_ABSD: 1654 FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DM4(src))); 1655 break; 1656 } 1657 1658 if (!(dst & SLJIT_MEM)) 1659 return SLJIT_SUCCESS; 1660 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw); 1661} 1662 1663SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op, 1664 sljit_si dst, sljit_sw dstw, 1665 sljit_si src1, sljit_sw src1w, 1666 sljit_si src2, sljit_sw src2w) 1667{ 1668 sljit_si dst_r; 1669 1670 CHECK_ERROR(); 1671 check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w); 1672 1673 compiler->cache_arg = 0; 1674 compiler->cache_argw = 0; 1675 op ^= SLJIT_SINGLE_OP; 1676 1677 dst_r = (dst <= REG_MASK) ? dst : TMP_FREG1; 1678 if (src1 & SLJIT_MEM) { 1679 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w); 1680 src1 = TMP_FREG1; 1681 } 1682 if (src2 & SLJIT_MEM) { 1683 emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w); 1684 src2 = TMP_FREG2; 1685 } 1686 1687 switch (GET_OPCODE(op)) { 1688 case SLJIT_ADDD: 1689 FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); 1690 break; 1691 case SLJIT_SUBD: 1692 FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); 1693 break; 1694 case SLJIT_MULD: 1695 FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); 1696 break; 1697 case SLJIT_DIVD: 1698 FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_SINGLE_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); 1699 break; 1700 } 1701 1702 if (!(dst & SLJIT_MEM)) 1703 return SLJIT_SUCCESS; 1704 return emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw); 1705} 1706 1707#undef FPU_LOAD 1708 1709/* --------------------------------------------------------------------- */ 1710/* Other instructions */ 1711/* --------------------------------------------------------------------- */ 1712 1713SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw) 1714{ 1715 CHECK_ERROR(); 1716 check_sljit_emit_fast_enter(compiler, dst, dstw); 1717 ADJUST_LOCAL_OFFSET(dst, dstw); 1718 1719 /* For UNUSED dst. Uncommon, but possible. */ 1720 if (dst == SLJIT_UNUSED) 1721 return SLJIT_SUCCESS; 1722 1723 if (dst <= REG_MASK) 1724 return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG3)); 1725 1726 /* Memory. */ 1727 if (getput_arg_fast(compiler, WORD_SIZE | STORE, TMP_REG3, dst, dstw)) 1728 return compiler->error; 1729 /* TMP_REG3 is used for caching. */ 1730 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, TMP_REG3))); 1731 compiler->cache_arg = 0; 1732 compiler->cache_argw = 0; 1733 return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0); 1734} 1735 1736SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw) 1737{ 1738 CHECK_ERROR(); 1739 check_sljit_emit_fast_return(compiler, src, srcw); 1740 ADJUST_LOCAL_OFFSET(src, srcw); 1741 1742 if (src <= REG_MASK) 1743 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, src))); 1744 else if (src & SLJIT_MEM) { 1745 if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG3, src, srcw)) 1746 FAIL_IF(compiler->error); 1747 else { 1748 compiler->cache_arg = 0; 1749 compiler->cache_argw = 0; 1750 FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, 0, 0)); 1751 FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, TMP_REG2))); 1752 } 1753 } 1754 else if (src & SLJIT_IMM) 1755 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw)); 1756 return push_inst16(compiler, BLX | RN3(TMP_REG3)); 1757} 1758 1759/* --------------------------------------------------------------------- */ 1760/* Conditional instructions */ 1761/* --------------------------------------------------------------------- */ 1762 1763static sljit_uw get_cc(sljit_si type) 1764{ 1765 switch (type) { 1766 case SLJIT_C_EQUAL: 1767 case SLJIT_C_MUL_NOT_OVERFLOW: 1768 case SLJIT_C_FLOAT_EQUAL: 1769 return 0x0; 1770 1771 case SLJIT_C_NOT_EQUAL: 1772 case SLJIT_C_MUL_OVERFLOW: 1773 case SLJIT_C_FLOAT_NOT_EQUAL: 1774 return 0x1; 1775 1776 case SLJIT_C_LESS: 1777 case SLJIT_C_FLOAT_LESS: 1778 return 0x3; 1779 1780 case SLJIT_C_GREATER_EQUAL: 1781 case SLJIT_C_FLOAT_GREATER_EQUAL: 1782 return 0x2; 1783 1784 case SLJIT_C_GREATER: 1785 case SLJIT_C_FLOAT_GREATER: 1786 return 0x8; 1787 1788 case SLJIT_C_LESS_EQUAL: 1789 case SLJIT_C_FLOAT_LESS_EQUAL: 1790 return 0x9; 1791 1792 case SLJIT_C_SIG_LESS: 1793 return 0xb; 1794 1795 case SLJIT_C_SIG_GREATER_EQUAL: 1796 return 0xa; 1797 1798 case SLJIT_C_SIG_GREATER: 1799 return 0xc; 1800 1801 case SLJIT_C_SIG_LESS_EQUAL: 1802 return 0xd; 1803 1804 case SLJIT_C_OVERFLOW: 1805 case SLJIT_C_FLOAT_UNORDERED: 1806 return 0x6; 1807 1808 case SLJIT_C_NOT_OVERFLOW: 1809 case SLJIT_C_FLOAT_ORDERED: 1810 return 0x7; 1811 1812 default: /* SLJIT_JUMP */ 1813 return 0xe; 1814 } 1815} 1816 1817SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) 1818{ 1819 struct sljit_label *label; 1820 1821 CHECK_ERROR_PTR(); 1822 check_sljit_emit_label(compiler); 1823 1824 if (compiler->last_label && compiler->last_label->size == compiler->size) 1825 return compiler->last_label; 1826 1827 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); 1828 PTR_FAIL_IF(!label); 1829 set_label(label, compiler); 1830 return label; 1831} 1832 1833SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type) 1834{ 1835 struct sljit_jump *jump; 1836 sljit_ins cc; 1837 1838 CHECK_ERROR_PTR(); 1839 check_sljit_emit_jump(compiler, type); 1840 1841 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); 1842 PTR_FAIL_IF(!jump); 1843 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); 1844 type &= 0xff; 1845 1846 /* In ARM, we don't need to touch the arguments. */ 1847 PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0)); 1848 if (type < SLJIT_JUMP) { 1849 jump->flags |= IS_COND; 1850 cc = get_cc(type); 1851 jump->flags |= cc << 8; 1852 PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); 1853 } 1854 1855 jump->addr = compiler->size; 1856 if (type <= SLJIT_JUMP) 1857 PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1))); 1858 else { 1859 jump->flags |= IS_BL; 1860 PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1))); 1861 } 1862 1863 return jump; 1864} 1865 1866SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw) 1867{ 1868 struct sljit_jump *jump; 1869 1870 CHECK_ERROR(); 1871 check_sljit_emit_ijump(compiler, type, src, srcw); 1872 ADJUST_LOCAL_OFFSET(src, srcw); 1873 1874 /* In ARM, we don't need to touch the arguments. */ 1875 if (!(src & SLJIT_IMM)) { 1876 if (FAST_IS_REG(src)) 1877 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src)); 1878 1879 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw)); 1880 if (type >= SLJIT_FAST_CALL) 1881 return push_inst16(compiler, BLX | RN3(TMP_REG1)); 1882 } 1883 1884 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); 1885 FAIL_IF(!jump); 1886 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0)); 1887 jump->u.target = srcw; 1888 1889 FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0)); 1890 jump->addr = compiler->size; 1891 return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1)); 1892} 1893 1894SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op, 1895 sljit_si dst, sljit_sw dstw, 1896 sljit_si src, sljit_sw srcw, 1897 sljit_si type) 1898{ 1899 sljit_si dst_r, flags = GET_ALL_FLAGS(op); 1900 sljit_ins cc, ins; 1901 1902 CHECK_ERROR(); 1903 check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type); 1904 ADJUST_LOCAL_OFFSET(dst, dstw); 1905 ADJUST_LOCAL_OFFSET(src, srcw); 1906 1907 if (dst == SLJIT_UNUSED) 1908 return SLJIT_SUCCESS; 1909 1910 op = GET_OPCODE(op); 1911 cc = get_cc(type); 1912 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2; 1913 1914 if (op < SLJIT_ADD) { 1915 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4)); 1916 if (reg_map[dst_r] > 7) { 1917 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1)); 1918 FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0)); 1919 } else { 1920 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1)); 1921 FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0)); 1922 } 1923 if (dst_r != TMP_REG2) 1924 return SLJIT_SUCCESS; 1925 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw); 1926 } 1927 1928 ins = (op == SLJIT_AND ? ANDI : (op == SLJIT_OR ? ORRI : EORI)); 1929 if ((op == SLJIT_OR || op == SLJIT_XOR) && FAST_IS_REG(dst) && dst == src) { 1930 /* Does not change the other bits. */ 1931 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); 1932 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst) | 1)); 1933 if (flags & SLJIT_SET_E) { 1934 /* The condition must always be set, even if the ORRI/EORI is not executed above. */ 1935 if (reg_map[dst] <= 7) 1936 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst)); 1937 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst)); 1938 } 1939 return SLJIT_SUCCESS; 1940 } 1941 1942 compiler->cache_arg = 0; 1943 compiler->cache_argw = 0; 1944 if (src & SLJIT_MEM) { 1945 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw)); 1946 src = TMP_REG2; 1947 srcw = 0; 1948 } else if (src & SLJIT_IMM) { 1949 FAIL_IF(load_immediate(compiler, TMP_REG2, srcw)); 1950 src = TMP_REG2; 1951 srcw = 0; 1952 } 1953 1954 if (op == SLJIT_AND || src != dst_r) { 1955 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4)); 1956 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1)); 1957 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 0)); 1958 } 1959 else { 1960 FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); 1961 FAIL_IF(push_inst32(compiler, ins | RN4(src) | RD4(dst_r) | 1)); 1962 } 1963 1964 if (dst_r == TMP_REG2) 1965 FAIL_IF(emit_op_mem2(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0)); 1966 1967 if (flags & SLJIT_SET_E) { 1968 /* The condition must always be set, even if the ORR/EORI is not executed above. */ 1969 if (reg_map[dst_r] <= 7) 1970 return push_inst16(compiler, MOVS | RD3(TMP_REG1) | RN3(dst_r)); 1971 return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r)); 1972 } 1973 return SLJIT_SUCCESS; 1974} 1975 1976SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value) 1977{ 1978 struct sljit_const *const_; 1979 sljit_si dst_r; 1980 1981 CHECK_ERROR_PTR(); 1982 check_sljit_emit_const(compiler, dst, dstw, init_value); 1983 ADJUST_LOCAL_OFFSET(dst, dstw); 1984 1985 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); 1986 PTR_FAIL_IF(!const_); 1987 set_const(const_, compiler); 1988 1989 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1990 PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value)); 1991 1992 if (dst & SLJIT_MEM) 1993 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw)); 1994 return const_; 1995} 1996 1997SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) 1998{ 1999 sljit_uh *inst = (sljit_uh*)addr; 2000 modify_imm32_const(inst, new_addr); 2001 SLJIT_CACHE_FLUSH(inst, inst + 4); 2002} 2003 2004SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant) 2005{ 2006 sljit_uh *inst = (sljit_uh*)addr; 2007 modify_imm32_const(inst, new_constant); 2008 SLJIT_CACHE_FLUSH(inst, inst + 4); 2009} 2010