1 /* 2 * Stack-less Just-In-Time compiler 3 * 4 * Copyright 2009-2012 Zoltan Herczeg (hzmester (at) freemail.hu). All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without modification, are 7 * permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, this list of 10 * conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 13 * of conditions and the following disclaimer in the documentation and/or other materials 14 * provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* x86 32-bit arch dependent functions. */ 28 29 static sljit_si emit_do_imm(struct sljit_compiler *compiler, sljit_ub opcode, sljit_sw imm) 30 { 31 sljit_ub *inst; 32 33 inst = (sljit_ub*)ensure_buf(compiler, 1 + 1 + sizeof(sljit_sw)); 34 FAIL_IF(!inst); 35 INC_SIZE(1 + sizeof(sljit_sw)); 36 *inst++ = opcode; 37 *(sljit_sw*)inst = imm; 38 return SLJIT_SUCCESS; 39 } 40 41 static sljit_ub* generate_far_jump_code(struct sljit_jump *jump, sljit_ub *code_ptr, sljit_si type) 42 { 43 if (type == SLJIT_JUMP) { 44 *code_ptr++ = JMP_i32; 45 jump->addr++; 46 } 47 else if (type >= SLJIT_FAST_CALL) { 48 *code_ptr++ = CALL_i32; 49 jump->addr++; 50 } 51 else { 52 *code_ptr++ = GROUP_0F; 53 *code_ptr++ = get_jump_code(type); 54 jump->addr += 2; 55 } 56 57 if (jump->flags & JUMP_LABEL) 58 jump->flags |= PATCH_MW; 59 else 60 *(sljit_sw*)code_ptr = jump->u.target - (jump->addr + 4); 61 code_ptr += 4; 62 63 return code_ptr; 64 } 65 66 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, 67 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds, 68 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size) 69 { 70 sljit_si size; 71 sljit_ub *inst; 72 73 CHECK_ERROR(); 74 check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); 75 76 compiler->options = options; 77 compiler->scratches = scratches; 78 compiler->saveds = saveds; 79 compiler->fscratches = fscratches; 80 compiler->fsaveds = fsaveds; 81 compiler->args = args; 82 compiler->flags_saved = 0; 83 #if (defined SLJIT_DEBUG && SLJIT_DEBUG) 84 compiler->logical_local_size = local_size; 85 #endif 86 87 size = 1 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3); 88 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 89 size += (args > 0 ? (args * 2) : 0) + (args > 2 ? 2 : 0); 90 #else 91 size += (args > 0 ? (2 + args * 3) : 0); 92 #endif 93 inst = (sljit_ub*)ensure_buf(compiler, 1 + size); 94 FAIL_IF(!inst); 95 96 INC_SIZE(size); 97 PUSH_REG(reg_map[TMP_REG1]); 98 #if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 99 if (args > 0) { 100 *inst++ = MOV_r_rm; 101 *inst++ = MOD_REG | (reg_map[TMP_REG1] << 3) | 0x4 /* esp */; 102 } 103 #endif 104 if (saveds > 2 || scratches > 7) 105 PUSH_REG(reg_map[SLJIT_S2]); 106 if (saveds > 1 || scratches > 8) 107 PUSH_REG(reg_map[SLJIT_S1]); 108 if (saveds > 0 || scratches > 9) 109 PUSH_REG(reg_map[SLJIT_S0]); 110 111 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 112 if (args > 0) { 113 *inst++ = MOV_r_rm; 114 *inst++ = MOD_REG | (reg_map[SLJIT_S0] << 3) | reg_map[SLJIT_R2]; 115 } 116 if (args > 1) { 117 *inst++ = MOV_r_rm; 118 *inst++ = MOD_REG | (reg_map[SLJIT_S1] << 3) | reg_map[SLJIT_R1]; 119 } 120 if (args > 2) { 121 *inst++ = MOV_r_rm; 122 *inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | 0x4 /* esp */; 123 *inst++ = 0x24; 124 *inst++ = sizeof(sljit_sw) * (3 + 2); /* saveds >= 3 as well. */ 125 } 126 #else 127 if (args > 0) { 128 *inst++ = MOV_r_rm; 129 *inst++ = MOD_DISP8 | (reg_map[SLJIT_S0] << 3) | reg_map[TMP_REG1]; 130 *inst++ = sizeof(sljit_sw) * 2; 131 } 132 if (args > 1) { 133 *inst++ = MOV_r_rm; 134 *inst++ = MOD_DISP8 | (reg_map[SLJIT_S1] << 3) | reg_map[TMP_REG1]; 135 *inst++ = sizeof(sljit_sw) * 3; 136 } 137 if (args > 2) { 138 *inst++ = MOV_r_rm; 139 *inst++ = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | reg_map[TMP_REG1]; 140 *inst++ = sizeof(sljit_sw) * 4; 141 } 142 #endif 143 144 SLJIT_COMPILE_ASSERT(FIXED_LOCALS_OFFSET >= (2 + 4) * sizeof(sljit_uw), require_at_least_two_words); 145 #if defined(__APPLE__) 146 /* Ignore pushed registers and FIXED_LOCALS_OFFSET when 147 computing the aligned local size. */ 148 saveds = (2 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw); 149 local_size = ((FIXED_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds; 150 #else 151 local_size = FIXED_LOCALS_OFFSET + ((local_size + sizeof(sljit_uw) - 1) & ~(sizeof(sljit_uw) - 1)); 152 #endif 153 154 compiler->local_size = local_size; 155 #ifdef _WIN32 156 if (local_size > 1024) { 157 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 158 FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size)); 159 #else 160 local_size -= FIXED_LOCALS_OFFSET; 161 FAIL_IF(emit_do_imm(compiler, MOV_r_i32 + reg_map[SLJIT_R0], local_size)); 162 FAIL_IF(emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32, 163 SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, FIXED_LOCALS_OFFSET)); 164 #endif 165 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_CALL1, SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_grow_stack))); 166 } 167 #endif 168 169 SLJIT_ASSERT(local_size > 0); 170 return emit_non_cum_binary(compiler, SUB_r_rm, SUB_rm_r, SUB, SUB_EAX_i32, 171 SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size); 172 } 173 174 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, 175 sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds, 176 sljit_si fscratches, sljit_si fsaveds, sljit_si local_size) 177 { 178 CHECK_ERROR_VOID(); 179 check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); 180 181 compiler->options = options; 182 compiler->scratches = scratches; 183 compiler->saveds = saveds; 184 compiler->fscratches = fscratches; 185 compiler->fsaveds = fsaveds; 186 compiler->args = args; 187 #if (defined SLJIT_DEBUG && SLJIT_DEBUG) 188 compiler->logical_local_size = local_size; 189 #endif 190 191 #if defined(__APPLE__) 192 saveds = (2 + (scratches > 7 ? (scratches - 7) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw); 193 compiler->local_size = ((FIXED_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds; 194 #else 195 compiler->local_size = FIXED_LOCALS_OFFSET + ((local_size + sizeof(sljit_uw) - 1) & ~(sizeof(sljit_uw) - 1)); 196 #endif 197 } 198 199 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw) 200 { 201 sljit_si size; 202 sljit_ub *inst; 203 204 CHECK_ERROR(); 205 check_sljit_emit_return(compiler, op, src, srcw); 206 SLJIT_ASSERT(compiler->args >= 0); 207 208 compiler->flags_saved = 0; 209 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); 210 211 SLJIT_ASSERT(compiler->local_size > 0); 212 FAIL_IF(emit_cum_binary(compiler, ADD_r_rm, ADD_rm_r, ADD, ADD_EAX_i32, 213 SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size)); 214 215 size = 2 + (compiler->scratches > 7 ? (compiler->scratches - 7) : 0) + 216 (compiler->saveds <= 3 ? compiler->saveds : 3); 217 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 218 if (compiler->args > 2) 219 size += 2; 220 #else 221 if (compiler->args > 0) 222 size += 2; 223 #endif 224 inst = (sljit_ub*)ensure_buf(compiler, 1 + size); 225 FAIL_IF(!inst); 226 227 INC_SIZE(size); 228 229 if (compiler->saveds > 0 || compiler->scratches > 9) 230 POP_REG(reg_map[SLJIT_S0]); 231 if (compiler->saveds > 1 || compiler->scratches > 8) 232 POP_REG(reg_map[SLJIT_S1]); 233 if (compiler->saveds > 2 || compiler->scratches > 7) 234 POP_REG(reg_map[SLJIT_S2]); 235 POP_REG(reg_map[TMP_REG1]); 236 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 237 if (compiler->args > 2) 238 RET_I16(sizeof(sljit_sw)); 239 else 240 RET(); 241 #else 242 RET(); 243 #endif 244 245 return SLJIT_SUCCESS; 246 } 247 248 /* --------------------------------------------------------------------- */ 249 /* Operators */ 250 /* --------------------------------------------------------------------- */ 251 252 /* Size contains the flags as well. */ 253 static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si size, 254 /* The register or immediate operand. */ 255 sljit_si a, sljit_sw imma, 256 /* The general operand (not immediate). */ 257 sljit_si b, sljit_sw immb) 258 { 259 sljit_ub *inst; 260 sljit_ub *buf_ptr; 261 sljit_si flags = size & ~0xf; 262 sljit_si inst_size; 263 264 /* Both cannot be switched on. */ 265 SLJIT_ASSERT((flags & (EX86_BIN_INS | EX86_SHIFT_INS)) != (EX86_BIN_INS | EX86_SHIFT_INS)); 266 /* Size flags not allowed for typed instructions. */ 267 SLJIT_ASSERT(!(flags & (EX86_BIN_INS | EX86_SHIFT_INS)) || (flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) == 0); 268 /* Both size flags cannot be switched on. */ 269 SLJIT_ASSERT((flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) != (EX86_BYTE_ARG | EX86_HALF_ARG)); 270 /* SSE2 and immediate is not possible. */ 271 SLJIT_ASSERT(!(a & SLJIT_IMM) || !(flags & EX86_SSE2)); 272 SLJIT_ASSERT((flags & (EX86_PREF_F2 | EX86_PREF_F3)) != (EX86_PREF_F2 | EX86_PREF_F3) 273 && (flags & (EX86_PREF_F2 | EX86_PREF_66)) != (EX86_PREF_F2 | EX86_PREF_66) 274 && (flags & (EX86_PREF_F3 | EX86_PREF_66)) != (EX86_PREF_F3 | EX86_PREF_66)); 275 276 size &= 0xf; 277 inst_size = size; 278 279 if (flags & (EX86_PREF_F2 | EX86_PREF_F3)) 280 inst_size++; 281 if (flags & EX86_PREF_66) 282 inst_size++; 283 284 /* Calculate size of b. */ 285 inst_size += 1; /* mod r/m byte. */ 286 if (b & SLJIT_MEM) { 287 if ((b & REG_MASK) == SLJIT_UNUSED) 288 inst_size += sizeof(sljit_sw); 289 else if (immb != 0 && !(b & OFFS_REG_MASK)) { 290 /* Immediate operand. */ 291 if (immb <= 127 && immb >= -128) 292 inst_size += sizeof(sljit_sb); 293 else 294 inst_size += sizeof(sljit_sw); 295 } 296 297 if ((b & REG_MASK) == SLJIT_SP && !(b & OFFS_REG_MASK)) 298 b |= TO_OFFS_REG(SLJIT_SP); 299 300 if ((b & OFFS_REG_MASK) != SLJIT_UNUSED) 301 inst_size += 1; /* SIB byte. */ 302 } 303 304 /* Calculate size of a. */ 305 if (a & SLJIT_IMM) { 306 if (flags & EX86_BIN_INS) { 307 if (imma <= 127 && imma >= -128) { 308 inst_size += 1; 309 flags |= EX86_BYTE_ARG; 310 } else 311 inst_size += 4; 312 } 313 else if (flags & EX86_SHIFT_INS) { 314 imma &= 0x1f; 315 if (imma != 1) { 316 inst_size ++; 317 flags |= EX86_BYTE_ARG; 318 } 319 } else if (flags & EX86_BYTE_ARG) 320 inst_size++; 321 else if (flags & EX86_HALF_ARG) 322 inst_size += sizeof(short); 323 else 324 inst_size += sizeof(sljit_sw); 325 } 326 else 327 SLJIT_ASSERT(!(flags & EX86_SHIFT_INS) || a == SLJIT_PREF_SHIFT_REG); 328 329 inst = (sljit_ub*)ensure_buf(compiler, 1 + inst_size); 330 PTR_FAIL_IF(!inst); 331 332 /* Encoding the byte. */ 333 INC_SIZE(inst_size); 334 if (flags & EX86_PREF_F2) 335 *inst++ = 0xf2; 336 if (flags & EX86_PREF_F3) 337 *inst++ = 0xf3; 338 if (flags & EX86_PREF_66) 339 *inst++ = 0x66; 340 341 buf_ptr = inst + size; 342 343 /* Encode mod/rm byte. */ 344 if (!(flags & EX86_SHIFT_INS)) { 345 if ((flags & EX86_BIN_INS) && (a & SLJIT_IMM)) 346 *inst = (flags & EX86_BYTE_ARG) ? GROUP_BINARY_83 : GROUP_BINARY_81; 347 348 if ((a & SLJIT_IMM) || (a == 0)) 349 *buf_ptr = 0; 350 else if (!(flags & EX86_SSE2_OP1)) 351 *buf_ptr = reg_map[a] << 3; 352 else 353 *buf_ptr = a << 3; 354 } 355 else { 356 if (a & SLJIT_IMM) { 357 if (imma == 1) 358 *inst = GROUP_SHIFT_1; 359 else 360 *inst = GROUP_SHIFT_N; 361 } else 362 *inst = GROUP_SHIFT_CL; 363 *buf_ptr = 0; 364 } 365 366 if (!(b & SLJIT_MEM)) 367 *buf_ptr++ |= MOD_REG + ((!(flags & EX86_SSE2_OP2)) ? reg_map[b] : b); 368 else if ((b & REG_MASK) != SLJIT_UNUSED) { 369 if ((b & OFFS_REG_MASK) == SLJIT_UNUSED || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) { 370 if (immb != 0) { 371 if (immb <= 127 && immb >= -128) 372 *buf_ptr |= 0x40; 373 else 374 *buf_ptr |= 0x80; 375 } 376 377 if ((b & OFFS_REG_MASK) == SLJIT_UNUSED) 378 *buf_ptr++ |= reg_map[b & REG_MASK]; 379 else { 380 *buf_ptr++ |= 0x04; 381 *buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3); 382 } 383 384 if (immb != 0) { 385 if (immb <= 127 && immb >= -128) 386 *buf_ptr++ = immb; /* 8 bit displacement. */ 387 else { 388 *(sljit_sw*)buf_ptr = immb; /* 32 bit displacement. */ 389 buf_ptr += sizeof(sljit_sw); 390 } 391 } 392 } 393 else { 394 *buf_ptr++ |= 0x04; 395 *buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3) | (immb << 6); 396 } 397 } 398 else { 399 *buf_ptr++ |= 0x05; 400 *(sljit_sw*)buf_ptr = immb; /* 32 bit displacement. */ 401 buf_ptr += sizeof(sljit_sw); 402 } 403 404 if (a & SLJIT_IMM) { 405 if (flags & EX86_BYTE_ARG) 406 *buf_ptr = imma; 407 else if (flags & EX86_HALF_ARG) 408 *(short*)buf_ptr = imma; 409 else if (!(flags & EX86_SHIFT_INS)) 410 *(sljit_sw*)buf_ptr = imma; 411 } 412 413 return !(flags & EX86_SHIFT_INS) ? inst : (inst + 1); 414 } 415 416 /* --------------------------------------------------------------------- */ 417 /* Call / return instructions */ 418 /* --------------------------------------------------------------------- */ 419 420 static SLJIT_INLINE sljit_si call_with_args(struct sljit_compiler *compiler, sljit_si type) 421 { 422 sljit_ub *inst; 423 424 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) 425 inst = (sljit_ub*)ensure_buf(compiler, type >= SLJIT_CALL3 ? 1 + 2 + 1 : 1 + 2); 426 FAIL_IF(!inst); 427 INC_SIZE(type >= SLJIT_CALL3 ? 2 + 1 : 2); 428 429 if (type >= SLJIT_CALL3) 430 PUSH_REG(reg_map[SLJIT_R2]); 431 *inst++ = MOV_r_rm; 432 *inst++ = MOD_REG | (reg_map[SLJIT_R2] << 3) | reg_map[SLJIT_R0]; 433 #else 434 inst = (sljit_ub*)ensure_buf(compiler, 1 + 4 * (type - SLJIT_CALL0)); 435 FAIL_IF(!inst); 436 INC_SIZE(4 * (type - SLJIT_CALL0)); 437 438 *inst++ = MOV_rm_r; 439 *inst++ = MOD_DISP8 | (reg_map[SLJIT_R0] << 3) | 0x4 /* SIB */; 440 *inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP]; 441 *inst++ = 0; 442 if (type >= SLJIT_CALL2) { 443 *inst++ = MOV_rm_r; 444 *inst++ = MOD_DISP8 | (reg_map[SLJIT_R1] << 3) | 0x4 /* SIB */; 445 *inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP]; 446 *inst++ = sizeof(sljit_sw); 447 } 448 if (type >= SLJIT_CALL3) { 449 *inst++ = MOV_rm_r; 450 *inst++ = MOD_DISP8 | (reg_map[SLJIT_R2] << 3) | 0x4 /* SIB */; 451 *inst++ = (0x4 /* none*/ << 3) | reg_map[SLJIT_SP]; 452 *inst++ = 2 * sizeof(sljit_sw); 453 } 454 #endif 455 return SLJIT_SUCCESS; 456 } 457 458 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw) 459 { 460 sljit_ub *inst; 461 462 CHECK_ERROR(); 463 check_sljit_emit_fast_enter(compiler, dst, dstw); 464 ADJUST_LOCAL_OFFSET(dst, dstw); 465 466 CHECK_EXTRA_REGS(dst, dstw, (void)0); 467 468 /* For UNUSED dst. Uncommon, but possible. */ 469 if (dst == SLJIT_UNUSED) 470 dst = TMP_REG1; 471 472 if (FAST_IS_REG(dst)) { 473 /* Unused dest is possible here. */ 474 inst = (sljit_ub*)ensure_buf(compiler, 1 + 1); 475 FAIL_IF(!inst); 476 477 INC_SIZE(1); 478 POP_REG(reg_map[dst]); 479 return SLJIT_SUCCESS; 480 } 481 482 /* Memory. */ 483 inst = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw); 484 FAIL_IF(!inst); 485 *inst++ = POP_rm; 486 return SLJIT_SUCCESS; 487 } 488 489 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw) 490 { 491 sljit_ub *inst; 492 493 CHECK_ERROR(); 494 check_sljit_emit_fast_return(compiler, src, srcw); 495 ADJUST_LOCAL_OFFSET(src, srcw); 496 497 CHECK_EXTRA_REGS(src, srcw, (void)0); 498 499 if (FAST_IS_REG(src)) { 500 inst = (sljit_ub*)ensure_buf(compiler, 1 + 1 + 1); 501 FAIL_IF(!inst); 502 503 INC_SIZE(1 + 1); 504 PUSH_REG(reg_map[src]); 505 } 506 else if (src & SLJIT_MEM) { 507 inst = emit_x86_instruction(compiler, 1, 0, 0, src, srcw); 508 FAIL_IF(!inst); 509 *inst++ = GROUP_FF; 510 *inst |= PUSH_rm; 511 512 inst = (sljit_ub*)ensure_buf(compiler, 1 + 1); 513 FAIL_IF(!inst); 514 INC_SIZE(1); 515 } 516 else { 517 /* SLJIT_IMM. */ 518 inst = (sljit_ub*)ensure_buf(compiler, 1 + 5 + 1); 519 FAIL_IF(!inst); 520 521 INC_SIZE(5 + 1); 522 *inst++ = PUSH_i32; 523 *(sljit_sw*)inst = srcw; 524 inst += sizeof(sljit_sw); 525 } 526 527 RET(); 528 return SLJIT_SUCCESS; 529 } 530
