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 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void) 28 { 29 return "ARM-64" SLJIT_CPUINFO; 30 } 31 32 /* Length of an instruction word */ 33 typedef sljit_u32 sljit_ins; 34 35 #define TMP_ZERO (0) 36 37 #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2) 38 #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3) 39 #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4) 40 #define TMP_LR (SLJIT_NUMBER_OF_REGISTERS + 5) 41 #define TMP_SP (SLJIT_NUMBER_OF_REGISTERS + 6) 42 43 #define TMP_FREG1 (0) 44 #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) 45 46 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 8] = { 47 31, 0, 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 8, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 29, 9, 10, 11, 30, 31 48 }; 49 50 #define W_OP (1 << 31) 51 #define RD(rd) (reg_map[rd]) 52 #define RT(rt) (reg_map[rt]) 53 #define RN(rn) (reg_map[rn] << 5) 54 #define RT2(rt2) (reg_map[rt2] << 10) 55 #define RM(rm) (reg_map[rm] << 16) 56 #define VD(vd) (vd) 57 #define VT(vt) (vt) 58 #define VN(vn) ((vn) << 5) 59 #define VM(vm) ((vm) << 16) 60 61 /* --------------------------------------------------------------------- */ 62 /* Instrucion forms */ 63 /* --------------------------------------------------------------------- */ 64 65 #define ADC 0x9a000000 66 #define ADD 0x8b000000 67 #define ADDI 0x91000000 68 #define AND 0x8a000000 69 #define ANDI 0x92000000 70 #define ASRV 0x9ac02800 71 #define B 0x14000000 72 #define B_CC 0x54000000 73 #define BL 0x94000000 74 #define BLR 0xd63f0000 75 #define BR 0xd61f0000 76 #define BRK 0xd4200000 77 #define CBZ 0xb4000000 78 #define CLZ 0xdac01000 79 #define CSINC 0x9a800400 80 #define EOR 0xca000000 81 #define EORI 0xd2000000 82 #define FABS 0x1e60c000 83 #define FADD 0x1e602800 84 #define FCMP 0x1e602000 85 #define FCVT 0x1e224000 86 #define FCVTZS 0x9e780000 87 #define FDIV 0x1e601800 88 #define FMOV 0x1e604000 89 #define FMUL 0x1e600800 90 #define FNEG 0x1e614000 91 #define FSUB 0x1e603800 92 #define LDRI 0xf9400000 93 #define LDP 0xa9400000 94 #define LDP_PST 0xa8c00000 95 #define LSLV 0x9ac02000 96 #define LSRV 0x9ac02400 97 #define MADD 0x9b000000 98 #define MOVK 0xf2800000 99 #define MOVN 0x92800000 100 #define MOVZ 0xd2800000 101 #define NOP 0xd503201f 102 #define ORN 0xaa200000 103 #define ORR 0xaa000000 104 #define ORRI 0xb2000000 105 #define RET 0xd65f0000 106 #define SBC 0xda000000 107 #define SBFM 0x93000000 108 #define SCVTF 0x9e620000 109 #define SDIV 0x9ac00c00 110 #define SMADDL 0x9b200000 111 #define SMULH 0x9b403c00 112 #define STP 0xa9000000 113 #define STP_PRE 0xa9800000 114 #define STRI 0xf9000000 115 #define STR_FI 0x3d000000 116 #define STR_FR 0x3c206800 117 #define STUR_FI 0x3c000000 118 #define SUB 0xcb000000 119 #define SUBI 0xd1000000 120 #define SUBS 0xeb000000 121 #define UBFM 0xd3000000 122 #define UDIV 0x9ac00800 123 #define UMULH 0x9bc03c00 124 125 /* dest_reg is the absolute name of the register 126 Useful for reordering instructions in the delay slot. */ 127 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins) 128 { 129 sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); 130 FAIL_IF(!ptr); 131 *ptr = ins; 132 compiler->size++; 133 return SLJIT_SUCCESS; 134 } 135 136 static SLJIT_INLINE sljit_s32 emit_imm64_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm) 137 { 138 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5))); 139 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 16) & 0xffff) << 5) | (1 << 21))); 140 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 32) & 0xffff) << 5) | (2 << 21))); 141 return push_inst(compiler, MOVK | RD(dst) | ((imm >> 48) << 5) | (3 << 21)); 142 } 143 144 static SLJIT_INLINE void modify_imm64_const(sljit_ins* inst, sljit_uw new_imm) 145 { 146 sljit_s32 dst = inst[0] & 0x1f; 147 SLJIT_ASSERT((inst[0] & 0xffe00000) == MOVZ && (inst[1] & 0xffe00000) == (MOVK | (1 << 21))); 148 inst[0] = MOVZ | dst | ((new_imm & 0xffff) << 5); 149 inst[1] = MOVK | dst | (((new_imm >> 16) & 0xffff) << 5) | (1 << 21); 150 inst[2] = MOVK | dst | (((new_imm >> 32) & 0xffff) << 5) | (2 << 21); 151 inst[3] = MOVK | dst | ((new_imm >> 48) << 5) | (3 << 21); 152 } 153 154 static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code) 155 { 156 sljit_sw diff; 157 sljit_uw target_addr; 158 159 if (jump->flags & SLJIT_REWRITABLE_JUMP) { 160 jump->flags |= PATCH_ABS64; 161 return 0; 162 } 163 164 if (jump->flags & JUMP_ADDR) 165 target_addr = jump->u.target; 166 else { 167 SLJIT_ASSERT(jump->flags & JUMP_LABEL); 168 target_addr = (sljit_uw)(code + jump->u.label->size); 169 } 170 diff = (sljit_sw)target_addr - (sljit_sw)(code_ptr + 4); 171 172 if (jump->flags & IS_COND) { 173 diff += sizeof(sljit_ins); 174 if (diff <= 0xfffff && diff >= -0x100000) { 175 code_ptr[-5] ^= (jump->flags & IS_CBZ) ? (0x1 << 24) : 0x1; 176 jump->addr -= sizeof(sljit_ins); 177 jump->flags |= PATCH_COND; 178 return 5; 179 } 180 diff -= sizeof(sljit_ins); 181 } 182 183 if (diff <= 0x7ffffff && diff >= -0x8000000) { 184 jump->flags |= PATCH_B; 185 return 4; 186 } 187 188 if (target_addr <= 0xffffffffl) { 189 if (jump->flags & IS_COND) 190 code_ptr[-5] -= (2 << 5); 191 code_ptr[-2] = code_ptr[0]; 192 return 2; 193 } 194 if (target_addr <= 0xffffffffffffl) { 195 if (jump->flags & IS_COND) 196 code_ptr[-5] -= (1 << 5); 197 jump->flags |= PATCH_ABS48; 198 code_ptr[-1] = code_ptr[0]; 199 return 1; 200 } 201 202 jump->flags |= PATCH_ABS64; 203 return 0; 204 } 205 206 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) 207 { 208 struct sljit_memory_fragment *buf; 209 sljit_ins *code; 210 sljit_ins *code_ptr; 211 sljit_ins *buf_ptr; 212 sljit_ins *buf_end; 213 sljit_uw word_count; 214 sljit_uw addr; 215 sljit_s32 dst; 216 217 struct sljit_label *label; 218 struct sljit_jump *jump; 219 struct sljit_const *const_; 220 221 CHECK_ERROR_PTR(); 222 CHECK_PTR(check_sljit_generate_code(compiler)); 223 reverse_buf(compiler); 224 225 code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins)); 226 PTR_FAIL_WITH_EXEC_IF(code); 227 buf = compiler->buf; 228 229 code_ptr = code; 230 word_count = 0; 231 label = compiler->labels; 232 jump = compiler->jumps; 233 const_ = compiler->consts; 234 235 do { 236 buf_ptr = (sljit_ins*)buf->memory; 237 buf_end = buf_ptr + (buf->used_size >> 2); 238 do { 239 *code_ptr = *buf_ptr++; 240 /* These structures are ordered by their address. */ 241 SLJIT_ASSERT(!label || label->size >= word_count); 242 SLJIT_ASSERT(!jump || jump->addr >= word_count); 243 SLJIT_ASSERT(!const_ || const_->addr >= word_count); 244 if (label && label->size == word_count) { 245 label->addr = (sljit_uw)code_ptr; 246 label->size = code_ptr - code; 247 label = label->next; 248 } 249 if (jump && jump->addr == word_count) { 250 jump->addr = (sljit_uw)(code_ptr - 4); 251 code_ptr -= detect_jump_type(jump, code_ptr, code); 252 jump = jump->next; 253 } 254 if (const_ && const_->addr == word_count) { 255 const_->addr = (sljit_uw)code_ptr; 256 const_ = const_->next; 257 } 258 code_ptr ++; 259 word_count ++; 260 } while (buf_ptr < buf_end); 261 262 buf = buf->next; 263 } while (buf); 264 265 if (label && label->size == word_count) { 266 label->addr = (sljit_uw)code_ptr; 267 label->size = code_ptr - code; 268 label = label->next; 269 } 270 271 SLJIT_ASSERT(!label); 272 SLJIT_ASSERT(!jump); 273 SLJIT_ASSERT(!const_); 274 SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size); 275 276 jump = compiler->jumps; 277 while (jump) { 278 do { 279 addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; 280 buf_ptr = (sljit_ins*)jump->addr; 281 if (jump->flags & PATCH_B) { 282 addr = (sljit_sw)(addr - jump->addr) >> 2; 283 SLJIT_ASSERT((sljit_sw)addr <= 0x1ffffff && (sljit_sw)addr >= -0x2000000); 284 buf_ptr[0] = ((jump->flags & IS_BL) ? BL : B) | (addr & 0x3ffffff); 285 if (jump->flags & IS_COND) 286 buf_ptr[-1] -= (4 << 5); 287 break; 288 } 289 if (jump->flags & PATCH_COND) { 290 addr = (sljit_sw)(addr - jump->addr) >> 2; 291 SLJIT_ASSERT((sljit_sw)addr <= 0x3ffff && (sljit_sw)addr >= -0x40000); 292 buf_ptr[0] = (buf_ptr[0] & ~0xffffe0) | ((addr & 0x7ffff) << 5); 293 break; 294 } 295 296 SLJIT_ASSERT((jump->flags & (PATCH_ABS48 | PATCH_ABS64)) || addr <= 0xffffffffl); 297 SLJIT_ASSERT((jump->flags & PATCH_ABS64) || addr <= 0xffffffffffffl); 298 299 dst = buf_ptr[0] & 0x1f; 300 buf_ptr[0] = MOVZ | dst | ((addr & 0xffff) << 5); 301 buf_ptr[1] = MOVK | dst | (((addr >> 16) & 0xffff) << 5) | (1 << 21); 302 if (jump->flags & (PATCH_ABS48 | PATCH_ABS64)) 303 buf_ptr[2] = MOVK | dst | (((addr >> 32) & 0xffff) << 5) | (2 << 21); 304 if (jump->flags & PATCH_ABS64) 305 buf_ptr[3] = MOVK | dst | (((addr >> 48) & 0xffff) << 5) | (3 << 21); 306 } while (0); 307 jump = jump->next; 308 } 309 310 compiler->error = SLJIT_ERR_COMPILED; 311 compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins); 312 SLJIT_CACHE_FLUSH(code, code_ptr); 313 return code; 314 } 315 316 /* --------------------------------------------------------------------- */ 317 /* Core code generator functions. */ 318 /* --------------------------------------------------------------------- */ 319 320 #define COUNT_TRAILING_ZERO(value, result) \ 321 result = 0; \ 322 if (!(value & 0xffffffff)) { \ 323 result += 32; \ 324 value >>= 32; \ 325 } \ 326 if (!(value & 0xffff)) { \ 327 result += 16; \ 328 value >>= 16; \ 329 } \ 330 if (!(value & 0xff)) { \ 331 result += 8; \ 332 value >>= 8; \ 333 } \ 334 if (!(value & 0xf)) { \ 335 result += 4; \ 336 value >>= 4; \ 337 } \ 338 if (!(value & 0x3)) { \ 339 result += 2; \ 340 value >>= 2; \ 341 } \ 342 if (!(value & 0x1)) { \ 343 result += 1; \ 344 value >>= 1; \ 345 } 346 347 #define LOGICAL_IMM_CHECK 0x100 348 349 static sljit_ins logical_imm(sljit_sw imm, sljit_s32 len) 350 { 351 sljit_s32 negated, ones, right; 352 sljit_uw mask, uimm; 353 sljit_ins ins; 354 355 if (len & LOGICAL_IMM_CHECK) { 356 len &= ~LOGICAL_IMM_CHECK; 357 if (len == 32 && (imm == 0 || imm == -1)) 358 return 0; 359 if (len == 16 && ((sljit_s32)imm == 0 || (sljit_s32)imm == -1)) 360 return 0; 361 } 362 363 SLJIT_ASSERT((len == 32 && imm != 0 && imm != -1) 364 || (len == 16 && (sljit_s32)imm != 0 && (sljit_s32)imm != -1)); 365 uimm = (sljit_uw)imm; 366 while (1) { 367 if (len <= 0) { 368 SLJIT_ASSERT_STOP(); 369 return 0; 370 } 371 mask = ((sljit_uw)1 << len) - 1; 372 if ((uimm & mask) != ((uimm >> len) & mask)) 373 break; 374 len >>= 1; 375 } 376 377 len <<= 1; 378 379 negated = 0; 380 if (uimm & 0x1) { 381 negated = 1; 382 uimm = ~uimm; 383 } 384 385 if (len < 64) 386 uimm &= ((sljit_uw)1 << len) - 1; 387 388 /* Unsigned right shift. */ 389 COUNT_TRAILING_ZERO(uimm, right); 390 391 /* Signed shift. We also know that the highest bit is set. */ 392 imm = (sljit_sw)~uimm; 393 SLJIT_ASSERT(imm < 0); 394 395 COUNT_TRAILING_ZERO(imm, ones); 396 397 if (~imm) 398 return 0; 399 400 if (len == 64) 401 ins = 1 << 22; 402 else 403 ins = (0x3f - ((len << 1) - 1)) << 10; 404 405 if (negated) 406 return ins | ((len - ones - 1) << 10) | ((len - ones - right) << 16); 407 408 return ins | ((ones - 1) << 10) | ((len - right) << 16); 409 } 410 411 #undef COUNT_TRAILING_ZERO 412 413 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw simm) 414 { 415 sljit_uw imm = (sljit_uw)simm; 416 sljit_s32 i, zeros, ones, first; 417 sljit_ins bitmask; 418 419 if (imm <= 0xffff) 420 return push_inst(compiler, MOVZ | RD(dst) | (imm << 5)); 421 422 if (simm >= -0x10000 && simm < 0) 423 return push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5)); 424 425 if (imm <= 0xffffffffl) { 426 if ((imm & 0xffff0000l) == 0xffff0000) 427 return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff) << 5)); 428 if ((imm & 0xffff) == 0xffff) 429 return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); 430 bitmask = logical_imm(simm, 16); 431 if (bitmask != 0) 432 return push_inst(compiler, (ORRI ^ W_OP) | RD(dst) | RN(TMP_ZERO) | bitmask); 433 } 434 else { 435 bitmask = logical_imm(simm, 32); 436 if (bitmask != 0) 437 return push_inst(compiler, ORRI | RD(dst) | RN(TMP_ZERO) | bitmask); 438 } 439 440 if (imm <= 0xffffffffl) { 441 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5))); 442 return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); 443 } 444 445 if (simm >= -0x100000000l && simm < 0) { 446 FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5))); 447 return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); 448 } 449 450 /* A large amount of number can be constructed from ORR and MOVx, 451 but computing them is costly. We don't */ 452 453 zeros = 0; 454 ones = 0; 455 for (i = 4; i > 0; i--) { 456 if ((simm & 0xffff) == 0) 457 zeros++; 458 if ((simm & 0xffff) == 0xffff) 459 ones++; 460 simm >>= 16; 461 } 462 463 simm = (sljit_sw)imm; 464 first = 1; 465 if (ones > zeros) { 466 simm = ~simm; 467 for (i = 0; i < 4; i++) { 468 if (!(simm & 0xffff)) { 469 simm >>= 16; 470 continue; 471 } 472 if (first) { 473 first = 0; 474 FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); 475 } 476 else 477 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((~simm & 0xffff) << 5) | (i << 21))); 478 simm >>= 16; 479 } 480 return SLJIT_SUCCESS; 481 } 482 483 for (i = 0; i < 4; i++) { 484 if (!(simm & 0xffff)) { 485 simm >>= 16; 486 continue; 487 } 488 if (first) { 489 first = 0; 490 FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); 491 } 492 else 493 FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); 494 simm >>= 16; 495 } 496 return SLJIT_SUCCESS; 497 } 498 499 #define ARG1_IMM 0x0010000 500 #define ARG2_IMM 0x0020000 501 #define INT_OP 0x0040000 502 #define SET_FLAGS 0x0080000 503 #define UNUSED_RETURN 0x0100000 504 #define SLOW_DEST 0x0200000 505 #define SLOW_SRC1 0x0400000 506 #define SLOW_SRC2 0x0800000 507 508 #define CHECK_FLAGS(flag_bits) \ 509 if (flags & SET_FLAGS) { \ 510 inv_bits |= flag_bits; \ 511 if (flags & UNUSED_RETURN) \ 512 dst = TMP_ZERO; \ 513 } 514 515 static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_sw arg1, sljit_sw arg2) 516 { 517 /* dst must be register, TMP_REG1 518 arg1 must be register, TMP_REG1, imm 519 arg2 must be register, TMP_REG2, imm */ 520 sljit_ins inv_bits = (flags & INT_OP) ? (1 << 31) : 0; 521 sljit_ins inst_bits; 522 sljit_s32 op = (flags & 0xffff); 523 sljit_s32 reg; 524 sljit_sw imm, nimm; 525 526 if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) { 527 /* Both are immediates. */ 528 flags &= ~ARG1_IMM; 529 if (arg1 == 0 && op != SLJIT_ADD && op != SLJIT_SUB) 530 arg1 = TMP_ZERO; 531 else { 532 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); 533 arg1 = TMP_REG1; 534 } 535 } 536 537 if (flags & (ARG1_IMM | ARG2_IMM)) { 538 reg = (flags & ARG2_IMM) ? arg1 : arg2; 539 imm = (flags & ARG2_IMM) ? arg2 : arg1; 540 541 switch (op) { 542 case SLJIT_MUL: 543 case SLJIT_NEG: 544 case SLJIT_CLZ: 545 case SLJIT_ADDC: 546 case SLJIT_SUBC: 547 /* No form with immediate operand (except imm 0, which 548 is represented by a ZERO register). */ 549 break; 550 case SLJIT_MOV: 551 SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1); 552 return load_immediate(compiler, dst, imm); 553 case SLJIT_NOT: 554 SLJIT_ASSERT(flags & ARG2_IMM); 555 FAIL_IF(load_immediate(compiler, dst, (flags & INT_OP) ? (~imm & 0xffffffff) : ~imm)); 556 goto set_flags; 557 case SLJIT_SUB: 558 if (flags & ARG1_IMM) 559 break; 560 imm = -imm; 561 /* Fall through. */ 562 case SLJIT_ADD: 563 if (imm == 0) { 564 CHECK_FLAGS(1 << 29); 565 return push_inst(compiler, ((op == SLJIT_ADD ? ADDI : SUBI) ^ inv_bits) | RD(dst) | RN(reg)); 566 } 567 if (imm > 0 && imm <= 0xfff) { 568 CHECK_FLAGS(1 << 29); 569 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | (imm << 10)); 570 } 571 nimm = -imm; 572 if (nimm > 0 && nimm <= 0xfff) { 573 CHECK_FLAGS(1 << 29); 574 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | (nimm << 10)); 575 } 576 if (imm > 0 && imm <= 0xffffff && !(imm & 0xfff)) { 577 CHECK_FLAGS(1 << 29); 578 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22)); 579 } 580 if (nimm > 0 && nimm <= 0xffffff && !(nimm & 0xfff)) { 581 CHECK_FLAGS(1 << 29); 582 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22)); 583 } 584 if (imm > 0 && imm <= 0xffffff && !(flags & SET_FLAGS)) { 585 FAIL_IF(push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22))); 586 return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(dst) | ((imm & 0xfff) << 10)); 587 } 588 if (nimm > 0 && nimm <= 0xffffff && !(flags & SET_FLAGS)) { 589 FAIL_IF(push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22))); 590 return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(dst) | ((nimm & 0xfff) << 10)); 591 } 592 break; 593 case SLJIT_AND: 594 inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32)); 595 if (!inst_bits) 596 break; 597 CHECK_FLAGS(3 << 29); 598 return push_inst(compiler, (ANDI ^ inv_bits) | RD(dst) | RN(reg) | inst_bits); 599 case SLJIT_OR: 600 case SLJIT_XOR: 601 inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32)); 602 if (!inst_bits) 603 break; 604 if (op == SLJIT_OR) 605 inst_bits |= ORRI; 606 else 607 inst_bits |= EORI; 608 FAIL_IF(push_inst(compiler, (inst_bits ^ inv_bits) | RD(dst) | RN(reg))); 609 goto set_flags; 610 case SLJIT_SHL: 611 if (flags & ARG1_IMM) 612 break; 613 if (flags & INT_OP) { 614 imm &= 0x1f; 615 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | ((-imm & 0x1f) << 16) | ((31 - imm) << 10))); 616 } 617 else { 618 imm &= 0x3f; 619 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | ((-imm & 0x3f) << 16) | ((63 - imm) << 10))); 620 } 621 goto set_flags; 622 case SLJIT_LSHR: 623 case SLJIT_ASHR: 624 if (flags & ARG1_IMM) 625 break; 626 if (op == SLJIT_ASHR) 627 inv_bits |= 1 << 30; 628 if (flags & INT_OP) { 629 imm &= 0x1f; 630 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (imm << 16) | (31 << 10))); 631 } 632 else { 633 imm &= 0x3f; 634 FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | (imm << 16) | (63 << 10))); 635 } 636 goto set_flags; 637 default: 638 SLJIT_ASSERT_STOP(); 639 break; 640 } 641 642 if (flags & ARG2_IMM) { 643 if (arg2 == 0) 644 arg2 = TMP_ZERO; 645 else { 646 FAIL_IF(load_immediate(compiler, TMP_REG2, arg2)); 647 arg2 = TMP_REG2; 648 } 649 } 650 else { 651 if (arg1 == 0) 652 arg1 = TMP_ZERO; 653 else { 654 FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); 655 arg1 = TMP_REG1; 656 } 657 } 658 } 659 660 /* Both arguments are registers. */ 661 switch (op) { 662 case SLJIT_MOV: 663 case SLJIT_MOV_P: 664 case SLJIT_MOVU: 665 case SLJIT_MOVU_P: 666 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 667 if (dst == arg2) 668 return SLJIT_SUCCESS; 669 return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(arg2)); 670 case SLJIT_MOV_U8: 671 case SLJIT_MOVU_U8: 672 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 673 return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (7 << 10)); 674 case SLJIT_MOV_S8: 675 case SLJIT_MOVU_S8: 676 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 677 if (!(flags & INT_OP)) 678 inv_bits |= 1 << 22; 679 return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (7 << 10)); 680 case SLJIT_MOV_U16: 681 case SLJIT_MOVU_U16: 682 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 683 return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (15 << 10)); 684 case SLJIT_MOV_S16: 685 case SLJIT_MOVU_S16: 686 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 687 if (!(flags & INT_OP)) 688 inv_bits |= 1 << 22; 689 return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (15 << 10)); 690 case SLJIT_MOV_U32: 691 case SLJIT_MOVU_U32: 692 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 693 if ((flags & INT_OP) && dst == arg2) 694 return SLJIT_SUCCESS; 695 return push_inst(compiler, (ORR ^ (1 << 31)) | RD(dst) | RN(TMP_ZERO) | RM(arg2)); 696 case SLJIT_MOV_S32: 697 case SLJIT_MOVU_S32: 698 SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); 699 if ((flags & INT_OP) && dst == arg2) 700 return SLJIT_SUCCESS; 701 return push_inst(compiler, SBFM | (1 << 22) | RD(dst) | RN(arg2) | (31 << 10)); 702 case SLJIT_NOT: 703 SLJIT_ASSERT(arg1 == TMP_REG1); 704 FAIL_IF(push_inst(compiler, (ORN ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2))); 705 goto set_flags; 706 case SLJIT_NEG: 707 SLJIT_ASSERT(arg1 == TMP_REG1); 708 if (flags & SET_FLAGS) 709 inv_bits |= 1 << 29; 710 return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2)); 711 case SLJIT_CLZ: 712 SLJIT_ASSERT(arg1 == TMP_REG1); 713 FAIL_IF(push_inst(compiler, (CLZ ^ inv_bits) | RD(dst) | RN(arg2))); 714 goto set_flags; 715 case SLJIT_ADD: 716 CHECK_FLAGS(1 << 29); 717 return push_inst(compiler, (ADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); 718 case SLJIT_ADDC: 719 CHECK_FLAGS(1 << 29); 720 return push_inst(compiler, (ADC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); 721 case SLJIT_SUB: 722 CHECK_FLAGS(1 << 29); 723 return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); 724 case SLJIT_SUBC: 725 CHECK_FLAGS(1 << 29); 726 return push_inst(compiler, (SBC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); 727 case SLJIT_MUL: 728 if (!(flags & SET_FLAGS)) 729 return push_inst(compiler, (MADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO)); 730 if (flags & INT_OP) { 731 FAIL_IF(push_inst(compiler, SMADDL | RD(dst) | RN(arg1) | RM(arg2) | (31 << 10))); 732 FAIL_IF(push_inst(compiler, ADD | RD(TMP_LR) | RN(TMP_ZERO) | RM(dst) | (2 << 22) | (31 << 10))); 733 return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10)); 734 } 735 FAIL_IF(push_inst(compiler, SMULH | RD(TMP_LR) | RN(arg1) | RM(arg2))); 736 FAIL_IF(push_inst(compiler, MADD | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO))); 737 return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10)); 738 case SLJIT_AND: 739 CHECK_FLAGS(3 << 29); 740 return push_inst(compiler, (AND ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); 741 case SLJIT_OR: 742 FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); 743 goto set_flags; 744 case SLJIT_XOR: 745 FAIL_IF(push_inst(compiler, (EOR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); 746 goto set_flags; 747 case SLJIT_SHL: 748 FAIL_IF(push_inst(compiler, (LSLV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); 749 goto set_flags; 750 case SLJIT_LSHR: 751 FAIL_IF(push_inst(compiler, (LSRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); 752 goto set_flags; 753 case SLJIT_ASHR: 754 FAIL_IF(push_inst(compiler, (ASRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); 755 goto set_flags; 756 } 757 758 SLJIT_ASSERT_STOP(); 759 return SLJIT_SUCCESS; 760 761 set_flags: 762 if (flags & SET_FLAGS) 763 return push_inst(compiler, (SUBS ^ inv_bits) | RD(TMP_ZERO) | RN(dst) | RM(TMP_ZERO)); 764 return SLJIT_SUCCESS; 765 } 766 767 #define STORE 0x01 768 #define SIGNED 0x02 769 770 #define UPDATE 0x04 771 #define ARG_TEST 0x08 772 773 #define BYTE_SIZE 0x000 774 #define HALF_SIZE 0x100 775 #define INT_SIZE 0x200 776 #define WORD_SIZE 0x300 777 778 #define MEM_SIZE_SHIFT(flags) ((flags) >> 8) 779 780 static const sljit_ins sljit_mem_imm[4] = { 781 /* u l */ 0x39400000 /* ldrb [reg,imm] */, 782 /* u s */ 0x39000000 /* strb [reg,imm] */, 783 /* s l */ 0x39800000 /* ldrsb [reg,imm] */, 784 /* s s */ 0x39000000 /* strb [reg,imm] */, 785 }; 786 787 static const sljit_ins sljit_mem_simm[4] = { 788 /* u l */ 0x38400000 /* ldurb [reg,imm] */, 789 /* u s */ 0x38000000 /* sturb [reg,imm] */, 790 /* s l */ 0x38800000 /* ldursb [reg,imm] */, 791 /* s s */ 0x38000000 /* sturb [reg,imm] */, 792 }; 793 794 static const sljit_ins sljit_mem_pre_simm[4] = { 795 /* u l */ 0x38400c00 /* ldrb [reg,imm]! */, 796 /* u s */ 0x38000c00 /* strb [reg,imm]! */, 797 /* s l */ 0x38800c00 /* ldrsb [reg,imm]! */, 798 /* s s */ 0x38000c00 /* strb [reg,imm]! */, 799 }; 800 801 static const sljit_ins sljit_mem_reg[4] = { 802 /* u l */ 0x38606800 /* ldrb [reg,reg] */, 803 /* u s */ 0x38206800 /* strb [reg,reg] */, 804 /* s l */ 0x38a06800 /* ldrsb [reg,reg] */, 805 /* s s */ 0x38206800 /* strb [reg,reg] */, 806 }; 807 808 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */ 809 static sljit_s32 emit_set_delta(struct sljit_compiler *compiler, sljit_s32 dst, sljit_s32 reg, sljit_sw value) 810 { 811 if (value >= 0) { 812 if (value <= 0xfff) 813 return push_inst(compiler, ADDI | RD(dst) | RN(reg) | (value << 10)); 814 if (value <= 0xffffff && !(value & 0xfff)) 815 return push_inst(compiler, ADDI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2)); 816 } 817 else { 818 value = -value; 819 if (value <= 0xfff) 820 return push_inst(compiler, SUBI | RD(dst) | RN(reg) | (value << 10)); 821 if (value <= 0xffffff && !(value & 0xfff)) 822 return push_inst(compiler, SUBI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2)); 823 } 824 return SLJIT_ERR_UNSUPPORTED; 825 } 826 827 /* Can perform an operation using at most 1 instruction. */ 828 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) 829 { 830 sljit_u32 shift = MEM_SIZE_SHIFT(flags); 831 832 SLJIT_ASSERT(arg & SLJIT_MEM); 833 834 if (SLJIT_UNLIKELY(flags & UPDATE)) { 835 if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 255 && argw >= -256) { 836 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 837 return 1; 838 839 arg &= REG_MASK; 840 argw &= 0x1ff; 841 FAIL_IF(push_inst(compiler, sljit_mem_pre_simm[flags & 0x3] 842 | (shift << 30) | RT(reg) | RN(arg) | (argw << 12))); 843 return -1; 844 } 845 return 0; 846 } 847 848 if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { 849 argw &= 0x3; 850 if (argw && argw != shift) 851 return 0; 852 853 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 854 return 1; 855 856 FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) 857 | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0))); 858 return -1; 859 } 860 861 arg &= REG_MASK; 862 if (argw >= 0 && (argw >> shift) <= 0xfff && (argw & ((1 << shift) - 1)) == 0) { 863 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 864 return 1; 865 866 FAIL_IF(push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) 867 | RT(reg) | RN(arg) | (argw << (10 - shift)))); 868 return -1; 869 } 870 871 if (argw > 255 || argw < -256) 872 return 0; 873 874 if (SLJIT_UNLIKELY(flags & ARG_TEST)) 875 return 1; 876 877 FAIL_IF(push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30) 878 | RT(reg) | RN(arg) | ((argw & 0x1ff) << 12))); 879 return -1; 880 } 881 882 /* see getput_arg below. 883 Note: can_cache is called only for binary operators. Those 884 operators always uses word arguments without write back. */ 885 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw) 886 { 887 sljit_sw diff; 888 if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM)) 889 return 0; 890 891 if (!(arg & REG_MASK)) { 892 diff = argw - next_argw; 893 if (diff <= 0xfff && diff >= -0xfff) 894 return 1; 895 return 0; 896 } 897 898 if (argw == next_argw) 899 return 1; 900 901 diff = argw - next_argw; 902 if (arg == next_arg && diff <= 0xfff && diff >= -0xfff) 903 return 1; 904 905 return 0; 906 } 907 908 /* Emit the necessary instructions. See can_cache above. */ 909 static sljit_s32 getput_arg(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, 910 sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw) 911 { 912 sljit_u32 shift = MEM_SIZE_SHIFT(flags); 913 sljit_s32 tmp_r, other_r; 914 sljit_sw diff; 915 916 SLJIT_ASSERT(arg & SLJIT_MEM); 917 if (!(next_arg & SLJIT_MEM)) { 918 next_arg = 0; 919 next_argw = 0; 920 } 921 922 tmp_r = (flags & STORE) ? TMP_REG3 : reg; 923 924 if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) { 925 /* Update only applies if a base register exists. */ 926 other_r = OFFS_REG(arg); 927 if (!other_r) { 928 other_r = arg & REG_MASK; 929 if (other_r != reg && argw >= 0 && argw <= 0xffffff) { 930 if ((argw & 0xfff) != 0) 931 FAIL_IF(push_inst(compiler, ADDI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10))); 932 if (argw >> 12) 933 FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10))); 934 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r)); 935 } 936 else if (other_r != reg && argw < 0 && argw >= -0xffffff) { 937 argw = -argw; 938 if ((argw & 0xfff) != 0) 939 FAIL_IF(push_inst(compiler, SUBI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10))); 940 if (argw >> 12) 941 FAIL_IF(push_inst(compiler, SUBI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10))); 942 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r)); 943 } 944 945 if (compiler->cache_arg == SLJIT_MEM) { 946 if (argw == compiler->cache_argw) { 947 other_r = TMP_REG3; 948 argw = 0; 949 } 950 else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { 951 FAIL_IF(compiler->error); 952 compiler->cache_argw = argw; 953 other_r = TMP_REG3; 954 argw = 0; 955 } 956 } 957 958 if (argw) { 959 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 960 compiler->cache_arg = SLJIT_MEM; 961 compiler->cache_argw = argw; 962 other_r = TMP_REG3; 963 argw = 0; 964 } 965 } 966 967 /* No caching here. */ 968 arg &= REG_MASK; 969 argw &= 0x3; 970 if (!argw || argw == shift) { 971 FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(other_r) | (argw ? (1 << 12) : 0))); 972 return push_inst(compiler, ADD | RD(arg) | RN(arg) | RM(other_r) | (argw << 10)); 973 } 974 if (arg != reg) { 975 FAIL_IF(push_inst(compiler, ADD | RD(arg) | RN(arg) | RM(other_r) | (argw << 10))); 976 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg)); 977 } 978 FAIL_IF(push_inst(compiler, ADD | RD(TMP_LR) | RN(arg) | RM(other_r) | (argw << 10))); 979 FAIL_IF(push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(TMP_LR))); 980 return push_inst(compiler, ORR | RD(arg) | RN(TMP_ZERO) | RM(TMP_LR)); 981 } 982 983 if (arg & OFFS_REG_MASK) { 984 other_r = OFFS_REG(arg); 985 arg &= REG_MASK; 986 FAIL_IF(push_inst(compiler, ADD | RD(tmp_r) | RN(arg) | RM(other_r) | ((argw & 0x3) << 10))); 987 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(tmp_r)); 988 } 989 990 if (compiler->cache_arg == arg) { 991 diff = argw - compiler->cache_argw; 992 if (diff <= 255 && diff >= -256) 993 return push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30) 994 | RT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12)); 995 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) { 996 FAIL_IF(compiler->error); 997 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg)); 998 } 999 } 1000 1001 if (argw >= 0 && argw <= 0xffffff && (argw & ((1 << shift) - 1)) == 0) { 1002 FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(tmp_r) | RN(arg & REG_MASK) | ((argw >> 12) << 10))); 1003 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) 1004 | RT(reg) | RN(tmp_r) | ((argw & 0xfff) << (10 - shift))); 1005 } 1006 1007 diff = argw - next_argw; 1008 next_arg = (arg & REG_MASK) && (arg == next_arg) && diff <= 0xfff && diff >= -0xfff && diff != 0; 1009 arg &= REG_MASK; 1010 1011 if (arg && compiler->cache_arg == SLJIT_MEM) { 1012 if (compiler->cache_argw == argw) 1013 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); 1014 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { 1015 FAIL_IF(compiler->error); 1016 compiler->cache_argw = argw; 1017 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); 1018 } 1019 } 1020 1021 compiler->cache_argw = argw; 1022 if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) { 1023 FAIL_IF(compiler->error); 1024 compiler->cache_arg = SLJIT_MEM | arg; 1025 arg = 0; 1026 } 1027 else { 1028 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 1029 compiler->cache_arg = SLJIT_MEM; 1030 1031 if (next_arg) { 1032 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG3) | RN(TMP_REG3) | RM(arg))); 1033 compiler->cache_arg = SLJIT_MEM | arg; 1034 arg = 0; 1035 } 1036 } 1037 1038 if (arg) 1039 return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); 1040 return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(TMP_REG3)); 1041 } 1042 1043 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) 1044 { 1045 if (getput_arg_fast(compiler, flags, reg, arg, argw)) 1046 return compiler->error; 1047 compiler->cache_arg = 0; 1048 compiler->cache_argw = 0; 1049 return getput_arg(compiler, flags, reg, arg, argw, 0, 0); 1050 } 1051 1052 static SLJIT_INLINE sljit_s32 emit_op_mem2(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg1, sljit_sw arg1w, sljit_s32 arg2, sljit_sw arg2w) 1053 { 1054 if (getput_arg_fast(compiler, flags, reg, arg1, arg1w)) 1055 return compiler->error; 1056 return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w); 1057 } 1058 1059 /* --------------------------------------------------------------------- */ 1060 /* Entry, exit */ 1061 /* --------------------------------------------------------------------- */ 1062 1063 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, 1064 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds, 1065 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) 1066 { 1067 sljit_s32 i, tmp, offs, prev, saved_regs_size; 1068 1069 CHECK_ERROR(); 1070 CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size)); 1071 set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); 1072 1073 saved_regs_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0); 1074 local_size += saved_regs_size + SLJIT_LOCALS_OFFSET; 1075 local_size = (local_size + 15) & ~0xf; 1076 compiler->local_size = local_size; 1077 1078 if (local_size <= (63 * sizeof(sljit_sw))) { 1079 FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR) 1080 | RN(TMP_SP) | ((-(local_size >> 3) & 0x7f) << 15))); 1081 FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10))); 1082 offs = (local_size - saved_regs_size) << (15 - 3); 1083 } else { 1084 offs = 0 << 15; 1085 if (saved_regs_size & 0x8) { 1086 offs = 1 << 15; 1087 saved_regs_size += sizeof(sljit_sw); 1088 } 1089 local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET; 1090 if (saved_regs_size > 0) 1091 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10))); 1092 } 1093 1094 tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG; 1095 prev = -1; 1096 for (i = SLJIT_S0; i >= tmp; i--) { 1097 if (prev == -1) { 1098 if (!(offs & (1 << 15))) { 1099 prev = i; 1100 continue; 1101 } 1102 FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5))); 1103 offs += 1 << 15; 1104 continue; 1105 } 1106 FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); 1107 offs += 2 << 15; 1108 prev = -1; 1109 } 1110 1111 for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) { 1112 if (prev == -1) { 1113 if (!(offs & (1 << 15))) { 1114 prev = i; 1115 continue; 1116 } 1117 FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5))); 1118 offs += 1 << 15; 1119 continue; 1120 } 1121 FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); 1122 offs += 2 << 15; 1123 prev = -1; 1124 } 1125 1126 SLJIT_ASSERT(prev == -1); 1127 1128 if (compiler->local_size > (63 * sizeof(sljit_sw))) { 1129 /* The local_size is already adjusted by the saved registers. */ 1130 if (local_size > 0xfff) { 1131 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22))); 1132 local_size &= 0xfff; 1133 } 1134 if (local_size) 1135 FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10))); 1136 FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR) 1137 | RN(TMP_SP) | ((-(16 >> 3) & 0x7f) << 15))); 1138 FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10))); 1139 } 1140 1141 if (args >= 1) 1142 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S0) | RN(TMP_ZERO) | RM(SLJIT_R0))); 1143 if (args >= 2) 1144 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S1) | RN(TMP_ZERO) | RM(SLJIT_R1))); 1145 if (args >= 3) 1146 FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S2) | RN(TMP_ZERO) | RM(SLJIT_R2))); 1147 1148 return SLJIT_SUCCESS; 1149 } 1150 1151 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, 1152 sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds, 1153 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) 1154 { 1155 CHECK_ERROR(); 1156 CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size)); 1157 set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); 1158 1159 local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0) + SLJIT_LOCALS_OFFSET; 1160 local_size = (local_size + 15) & ~0xf; 1161 compiler->local_size = local_size; 1162 return SLJIT_SUCCESS; 1163 } 1164 1165 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) 1166 { 1167 sljit_s32 local_size; 1168 sljit_s32 i, tmp, offs, prev, saved_regs_size; 1169 1170 CHECK_ERROR(); 1171 CHECK(check_sljit_emit_return(compiler, op, src, srcw)); 1172 1173 FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); 1174 1175 local_size = compiler->local_size; 1176 1177 saved_regs_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 0); 1178 if (local_size <= (63 * sizeof(sljit_sw))) 1179 offs = (local_size - saved_regs_size) << (15 - 3); 1180 else { 1181 FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR) 1182 | RN(TMP_SP) | (((16 >> 3) & 0x7f) << 15))); 1183 offs = 0 << 15; 1184 if (saved_regs_size & 0x8) { 1185 offs = 1 << 15; 1186 saved_regs_size += sizeof(sljit_sw); 1187 } 1188 local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET; 1189 if (local_size > 0xfff) { 1190 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22))); 1191 local_size &= 0xfff; 1192 } 1193 if (local_size) 1194 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10))); 1195 } 1196 1197 tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG; 1198 prev = -1; 1199 for (i = SLJIT_S0; i >= tmp; i--) { 1200 if (prev == -1) { 1201 if (!(offs & (1 << 15))) { 1202 prev = i; 1203 continue; 1204 } 1205 FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5))); 1206 offs += 1 << 15; 1207 continue; 1208 } 1209 FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); 1210 offs += 2 << 15; 1211 prev = -1; 1212 } 1213 1214 for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--) { 1215 if (prev == -1) { 1216 if (!(offs & (1 << 15))) { 1217 prev = i; 1218 continue; 1219 } 1220 FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5))); 1221 offs += 1 << 15; 1222 continue; 1223 } 1224 FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); 1225 offs += 2 << 15; 1226 prev = -1; 1227 } 1228 1229 SLJIT_ASSERT(prev == -1); 1230 1231 if (compiler->local_size <= (63 * sizeof(sljit_sw))) { 1232 FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR) 1233 | RN(TMP_SP) | (((local_size >> 3) & 0x7f) << 15))); 1234 } else if (saved_regs_size > 0) { 1235 FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10))); 1236 } 1237 1238 FAIL_IF(push_inst(compiler, RET | RN(TMP_LR))); 1239 return SLJIT_SUCCESS; 1240 } 1241 1242 /* --------------------------------------------------------------------- */ 1243 /* Operators */ 1244 /* --------------------------------------------------------------------- */ 1245 1246 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op) 1247 { 1248 sljit_ins inv_bits = (op & SLJIT_I32_OP) ? (1 << 31) : 0; 1249 1250 CHECK_ERROR(); 1251 CHECK(check_sljit_emit_op0(compiler, op)); 1252 1253 op = GET_OPCODE(op); 1254 switch (op) { 1255 case SLJIT_BREAKPOINT: 1256 return push_inst(compiler, BRK); 1257 case SLJIT_NOP: 1258 return push_inst(compiler, NOP); 1259 case SLJIT_LMUL_UW: 1260 case SLJIT_LMUL_SW: 1261 FAIL_IF(push_inst(compiler, ORR | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0))); 1262 FAIL_IF(push_inst(compiler, MADD | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO))); 1263 return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULH : SMULH) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1)); 1264 case SLJIT_DIVMOD_UW: 1265 case SLJIT_DIVMOD_SW: 1266 FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0))); 1267 FAIL_IF(push_inst(compiler, ((op == SLJIT_DIVMOD_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1))); 1268 FAIL_IF(push_inst(compiler, (MADD ^ inv_bits) | RD(SLJIT_R1) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO))); 1269 return push_inst(compiler, (SUB ^ inv_bits) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1)); 1270 case SLJIT_DIV_UW: 1271 case SLJIT_DIV_SW: 1272 return push_inst(compiler, ((op == SLJIT_DIV_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1)); 1273 } 1274 1275 return SLJIT_SUCCESS; 1276 } 1277 1278 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op, 1279 sljit_s32 dst, sljit_sw dstw, 1280 sljit_s32 src, sljit_sw srcw) 1281 { 1282 sljit_s32 dst_r, flags, mem_flags; 1283 sljit_s32 op_flags = GET_ALL_FLAGS(op); 1284 1285 CHECK_ERROR(); 1286 CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw)); 1287 ADJUST_LOCAL_OFFSET(dst, dstw); 1288 ADJUST_LOCAL_OFFSET(src, srcw); 1289 1290 compiler->cache_arg = 0; 1291 compiler->cache_argw = 0; 1292 1293 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1294 1295 op = GET_OPCODE(op); 1296 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) { 1297 switch (op) { 1298 case SLJIT_MOV: 1299 case SLJIT_MOV_P: 1300 flags = WORD_SIZE; 1301 break; 1302 case SLJIT_MOV_U8: 1303 flags = BYTE_SIZE; 1304 if (src & SLJIT_IMM) 1305 srcw = (sljit_u8)srcw; 1306 break; 1307 case SLJIT_MOV_S8: 1308 flags = BYTE_SIZE | SIGNED; 1309 if (src & SLJIT_IMM) 1310 srcw = (sljit_s8)srcw; 1311 break; 1312 case SLJIT_MOV_U16: 1313 flags = HALF_SIZE; 1314 if (src & SLJIT_IMM) 1315 srcw = (sljit_u16)srcw; 1316 break; 1317 case SLJIT_MOV_S16: 1318 flags = HALF_SIZE | SIGNED; 1319 if (src & SLJIT_IMM) 1320 srcw = (sljit_s16)srcw; 1321 break; 1322 case SLJIT_MOV_U32: 1323 flags = INT_SIZE; 1324 if (src & SLJIT_IMM) 1325 srcw = (sljit_u32)srcw; 1326 break; 1327 case SLJIT_MOV_S32: 1328 flags = INT_SIZE | SIGNED; 1329 if (src & SLJIT_IMM) 1330 srcw = (sljit_s32)srcw; 1331 break; 1332 case SLJIT_MOVU: 1333 case SLJIT_MOVU_P: 1334 flags = WORD_SIZE | UPDATE; 1335 break; 1336 case SLJIT_MOVU_U8: 1337 flags = BYTE_SIZE | UPDATE; 1338 if (src & SLJIT_IMM) 1339 srcw = (sljit_u8)srcw; 1340 break; 1341 case SLJIT_MOVU_S8: 1342 flags = BYTE_SIZE | SIGNED | UPDATE; 1343 if (src & SLJIT_IMM) 1344 srcw = (sljit_s8)srcw; 1345 break; 1346 case SLJIT_MOVU_U16: 1347 flags = HALF_SIZE | UPDATE; 1348 if (src & SLJIT_IMM) 1349 srcw = (sljit_u16)srcw; 1350 break; 1351 case SLJIT_MOVU_S16: 1352 flags = HALF_SIZE | SIGNED | UPDATE; 1353 if (src & SLJIT_IMM) 1354 srcw = (sljit_s16)srcw; 1355 break; 1356 case SLJIT_MOVU_U32: 1357 flags = INT_SIZE | UPDATE; 1358 if (src & SLJIT_IMM) 1359 srcw = (sljit_u32)srcw; 1360 break; 1361 case SLJIT_MOVU_S32: 1362 flags = INT_SIZE | SIGNED | UPDATE; 1363 if (src & SLJIT_IMM) 1364 srcw = (sljit_s32)srcw; 1365 break; 1366 default: 1367 SLJIT_ASSERT_STOP(); 1368 flags = 0; 1369 break; 1370 } 1371 1372 if (src & SLJIT_IMM) 1373 FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw)); 1374 else if (src & SLJIT_MEM) { 1375 if (getput_arg_fast(compiler, flags, dst_r, src, srcw)) 1376 FAIL_IF(compiler->error); 1377 else 1378 FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw)); 1379 } else { 1380 if (dst_r != TMP_REG1) 1381 return emit_op_imm(compiler, op | ((op_flags & SLJIT_I32_OP) ? INT_OP : 0), dst_r, TMP_REG1, src); 1382 dst_r = src; 1383 } 1384 1385 if (dst & SLJIT_MEM) { 1386 if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw)) 1387 return compiler->error; 1388 else 1389 return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0); 1390 } 1391 return SLJIT_SUCCESS; 1392 } 1393 1394 flags = GET_FLAGS(op_flags) ? SET_FLAGS : 0; 1395 mem_flags = WORD_SIZE; 1396 if (op_flags & SLJIT_I32_OP) { 1397 flags |= INT_OP; 1398 mem_flags = INT_SIZE; 1399 } 1400 1401 if (dst == SLJIT_UNUSED) 1402 flags |= UNUSED_RETURN; 1403 1404 if (src & SLJIT_MEM) { 1405 if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src, srcw)) 1406 FAIL_IF(compiler->error); 1407 else 1408 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src, srcw, dst, dstw)); 1409 src = TMP_REG2; 1410 } 1411 1412 if (src & SLJIT_IMM) { 1413 flags |= ARG2_IMM; 1414 if (op_flags & SLJIT_I32_OP) 1415 srcw = (sljit_s32)srcw; 1416 } else 1417 srcw = src; 1418 1419 emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw); 1420 1421 if (dst & SLJIT_MEM) { 1422 if (getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw)) 1423 return compiler->error; 1424 else 1425 return getput_arg(compiler, mem_flags | STORE, dst_r, dst, dstw, 0, 0); 1426 } 1427 return SLJIT_SUCCESS; 1428 } 1429 1430 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op, 1431 sljit_s32 dst, sljit_sw dstw, 1432 sljit_s32 src1, sljit_sw src1w, 1433 sljit_s32 src2, sljit_sw src2w) 1434 { 1435 sljit_s32 dst_r, flags, mem_flags; 1436 1437 CHECK_ERROR(); 1438 CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); 1439 ADJUST_LOCAL_OFFSET(dst, dstw); 1440 ADJUST_LOCAL_OFFSET(src1, src1w); 1441 ADJUST_LOCAL_OFFSET(src2, src2w); 1442 1443 compiler->cache_arg = 0; 1444 compiler->cache_argw = 0; 1445 1446 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1447 flags = GET_FLAGS(op) ? SET_FLAGS : 0; 1448 mem_flags = WORD_SIZE; 1449 if (op & SLJIT_I32_OP) { 1450 flags |= INT_OP; 1451 mem_flags = INT_SIZE; 1452 } 1453 1454 if (dst == SLJIT_UNUSED) 1455 flags |= UNUSED_RETURN; 1456 1457 if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, mem_flags | STORE | ARG_TEST, TMP_REG1, dst, dstw)) 1458 flags |= SLOW_DEST; 1459 1460 if (src1 & SLJIT_MEM) { 1461 if (getput_arg_fast(compiler, mem_flags, TMP_REG1, src1, src1w)) 1462 FAIL_IF(compiler->error); 1463 else 1464 flags |= SLOW_SRC1; 1465 } 1466 if (src2 & SLJIT_MEM) { 1467 if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src2, src2w)) 1468 FAIL_IF(compiler->error); 1469 else 1470 flags |= SLOW_SRC2; 1471 } 1472 1473 if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) { 1474 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) { 1475 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, src1, src1w)); 1476 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw)); 1477 } 1478 else { 1479 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, src2, src2w)); 1480 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw)); 1481 } 1482 } 1483 else if (flags & SLOW_SRC1) 1484 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw)); 1485 else if (flags & SLOW_SRC2) 1486 FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw)); 1487 1488 if (src1 & SLJIT_MEM) 1489 src1 = TMP_REG1; 1490 if (src2 & SLJIT_MEM) 1491 src2 = TMP_REG2; 1492 1493 if (src1 & SLJIT_IMM) 1494 flags |= ARG1_IMM; 1495 else 1496 src1w = src1; 1497 if (src2 & SLJIT_IMM) 1498 flags |= ARG2_IMM; 1499 else 1500 src2w = src2; 1501 1502 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w); 1503 1504 if (dst & SLJIT_MEM) { 1505 if (!(flags & SLOW_DEST)) { 1506 getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw); 1507 return compiler->error; 1508 } 1509 return getput_arg(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0); 1510 } 1511 1512 return SLJIT_SUCCESS; 1513 } 1514 1515 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg) 1516 { 1517 CHECK_REG_INDEX(check_sljit_get_register_index(reg)); 1518 return reg_map[reg]; 1519 } 1520 1521 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg) 1522 { 1523 CHECK_REG_INDEX(check_sljit_get_float_register_index(reg)); 1524 return reg; 1525 } 1526 1527 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler, 1528 void *instruction, sljit_s32 size) 1529 { 1530 CHECK_ERROR(); 1531 CHECK(check_sljit_emit_op_custom(compiler, instruction, size)); 1532 1533 return push_inst(compiler, *(sljit_ins*)instruction); 1534 } 1535 1536 /* --------------------------------------------------------------------- */ 1537 /* Floating point operators */ 1538 /* --------------------------------------------------------------------- */ 1539 1540 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void) 1541 { 1542 #ifdef SLJIT_IS_FPU_AVAILABLE 1543 return SLJIT_IS_FPU_AVAILABLE; 1544 #else 1545 /* Available by default. */ 1546 return 1; 1547 #endif 1548 } 1549 1550 static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) 1551 { 1552 sljit_u32 shift = MEM_SIZE_SHIFT(flags); 1553 sljit_ins ins_bits = (shift << 30); 1554 sljit_s32 other_r; 1555 sljit_sw diff; 1556 1557 SLJIT_ASSERT(arg & SLJIT_MEM); 1558 1559 if (!(flags & STORE)) 1560 ins_bits |= 1 << 22; 1561 1562 if (arg & OFFS_REG_MASK) { 1563 argw &= 3; 1564 if (!argw || argw == shift) 1565 return push_inst(compiler, STR_FR | ins_bits | VT(reg) 1566 | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0)); 1567 other_r = OFFS_REG(arg); 1568 arg &= REG_MASK; 1569 FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg) | RM(other_r) | (argw << 10))); 1570 arg = TMP_REG1; 1571 argw = 0; 1572 } 1573 1574 arg &= REG_MASK; 1575 if (arg && argw >= 0 && ((argw >> shift) <= 0xfff) && (argw & ((1 << shift) - 1)) == 0) 1576 return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(arg) | (argw << (10 - shift))); 1577 1578 if (arg && argw <= 255 && argw >= -256) 1579 return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(arg) | ((argw & 0x1ff) << 12)); 1580 1581 /* Slow cases */ 1582 if (compiler->cache_arg == SLJIT_MEM && argw != compiler->cache_argw) { 1583 diff = argw - compiler->cache_argw; 1584 if (!arg && diff <= 255 && diff >= -256) 1585 return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12)); 1586 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { 1587 FAIL_IF(compiler->error); 1588 compiler->cache_argw = argw; 1589 } 1590 } 1591 1592 if (compiler->cache_arg != SLJIT_MEM || argw != compiler->cache_argw) { 1593 compiler->cache_arg = SLJIT_MEM; 1594 compiler->cache_argw = argw; 1595 FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); 1596 } 1597 1598 if (arg & REG_MASK) 1599 return push_inst(compiler, STR_FR | ins_bits | VT(reg) | RN(arg) | RM(TMP_REG3)); 1600 return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(TMP_REG3)); 1601 } 1602 1603 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op, 1604 sljit_s32 dst, sljit_sw dstw, 1605 sljit_s32 src, sljit_sw srcw) 1606 { 1607 sljit_s32 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 1608 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 1609 1610 if (GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64) 1611 inv_bits |= (1 << 31); 1612 1613 if (src & SLJIT_MEM) { 1614 emit_fop_mem(compiler, (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE, TMP_FREG1, src, srcw); 1615 src = TMP_FREG1; 1616 } 1617 1618 FAIL_IF(push_inst(compiler, (FCVTZS ^ inv_bits) | RD(dst_r) | VN(src))); 1619 1620 if (dst_r == TMP_REG1 && dst != SLJIT_UNUSED) 1621 return emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64) ? INT_SIZE : WORD_SIZE) | STORE, TMP_REG1, dst, dstw); 1622 return SLJIT_SUCCESS; 1623 } 1624 1625 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op, 1626 sljit_s32 dst, sljit_sw dstw, 1627 sljit_s32 src, sljit_sw srcw) 1628 { 1629 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; 1630 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 1631 1632 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) 1633 inv_bits |= (1 << 31); 1634 1635 if (src & SLJIT_MEM) { 1636 emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) ? INT_SIZE : WORD_SIZE), TMP_REG1, src, srcw); 1637 src = TMP_REG1; 1638 } else if (src & SLJIT_IMM) { 1639 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) 1640 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) 1641 srcw = (sljit_s32)srcw; 1642 #endif 1643 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); 1644 src = TMP_REG1; 1645 } 1646 1647 FAIL_IF(push_inst(compiler, (SCVTF ^ inv_bits) | VD(dst_r) | RN(src))); 1648 1649 if (dst & SLJIT_MEM) 1650 return emit_fop_mem(compiler, ((op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE) | STORE, TMP_FREG1, dst, dstw); 1651 return SLJIT_SUCCESS; 1652 } 1653 1654 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op, 1655 sljit_s32 src1, sljit_sw src1w, 1656 sljit_s32 src2, sljit_sw src2w) 1657 { 1658 sljit_s32 mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; 1659 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 1660 1661 if (src1 & SLJIT_MEM) { 1662 emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w); 1663 src1 = TMP_FREG1; 1664 } 1665 1666 if (src2 & SLJIT_MEM) { 1667 emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w); 1668 src2 = TMP_FREG2; 1669 } 1670 1671 return push_inst(compiler, (FCMP ^ inv_bits) | VN(src1) | VM(src2)); 1672 } 1673 1674 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op, 1675 sljit_s32 dst, sljit_sw dstw, 1676 sljit_s32 src, sljit_sw srcw) 1677 { 1678 sljit_s32 dst_r, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; 1679 sljit_ins inv_bits; 1680 1681 CHECK_ERROR(); 1682 compiler->cache_arg = 0; 1683 compiler->cache_argw = 0; 1684 1685 SLJIT_COMPILE_ASSERT((INT_SIZE ^ 0x100) == WORD_SIZE, must_be_one_bit_difference); 1686 SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw); 1687 1688 inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 1689 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; 1690 1691 if (src & SLJIT_MEM) { 1692 emit_fop_mem(compiler, (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32) ? (mem_flags ^ 0x100) : mem_flags, dst_r, src, srcw); 1693 src = dst_r; 1694 } 1695 1696 switch (GET_OPCODE(op)) { 1697 case SLJIT_MOV_F64: 1698 if (src != dst_r) { 1699 if (dst_r != TMP_FREG1) 1700 FAIL_IF(push_inst(compiler, (FMOV ^ inv_bits) | VD(dst_r) | VN(src))); 1701 else 1702 dst_r = src; 1703 } 1704 break; 1705 case SLJIT_NEG_F64: 1706 FAIL_IF(push_inst(compiler, (FNEG ^ inv_bits) | VD(dst_r) | VN(src))); 1707 break; 1708 case SLJIT_ABS_F64: 1709 FAIL_IF(push_inst(compiler, (FABS ^ inv_bits) | VD(dst_r) | VN(src))); 1710 break; 1711 case SLJIT_CONV_F64_FROM_F32: 1712 FAIL_IF(push_inst(compiler, FCVT | ((op & SLJIT_F32_OP) ? (1 << 22) : (1 << 15)) | VD(dst_r) | VN(src))); 1713 break; 1714 } 1715 1716 if (dst & SLJIT_MEM) 1717 return emit_fop_mem(compiler, mem_flags | STORE, dst_r, dst, dstw); 1718 return SLJIT_SUCCESS; 1719 } 1720 1721 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op, 1722 sljit_s32 dst, sljit_sw dstw, 1723 sljit_s32 src1, sljit_sw src1w, 1724 sljit_s32 src2, sljit_sw src2w) 1725 { 1726 sljit_s32 dst_r, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; 1727 sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 1728 1729 CHECK_ERROR(); 1730 CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); 1731 ADJUST_LOCAL_OFFSET(dst, dstw); 1732 ADJUST_LOCAL_OFFSET(src1, src1w); 1733 ADJUST_LOCAL_OFFSET(src2, src2w); 1734 1735 compiler->cache_arg = 0; 1736 compiler->cache_argw = 0; 1737 1738 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; 1739 if (src1 & SLJIT_MEM) { 1740 emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w); 1741 src1 = TMP_FREG1; 1742 } 1743 if (src2 & SLJIT_MEM) { 1744 emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w); 1745 src2 = TMP_FREG2; 1746 } 1747 1748 switch (GET_OPCODE(op)) { 1749 case SLJIT_ADD_F64: 1750 FAIL_IF(push_inst(compiler, (FADD ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); 1751 break; 1752 case SLJIT_SUB_F64: 1753 FAIL_IF(push_inst(compiler, (FSUB ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); 1754 break; 1755 case SLJIT_MUL_F64: 1756 FAIL_IF(push_inst(compiler, (FMUL ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); 1757 break; 1758 case SLJIT_DIV_F64: 1759 FAIL_IF(push_inst(compiler, (FDIV ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); 1760 break; 1761 } 1762 1763 if (!(dst & SLJIT_MEM)) 1764 return SLJIT_SUCCESS; 1765 return emit_fop_mem(compiler, mem_flags | STORE, TMP_FREG1, dst, dstw); 1766 } 1767 1768 /* --------------------------------------------------------------------- */ 1769 /* Other instructions */ 1770 /* --------------------------------------------------------------------- */ 1771 1772 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) 1773 { 1774 CHECK_ERROR(); 1775 CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw)); 1776 ADJUST_LOCAL_OFFSET(dst, dstw); 1777 1778 /* For UNUSED dst. Uncommon, but possible. */ 1779 if (dst == SLJIT_UNUSED) 1780 return SLJIT_SUCCESS; 1781 1782 if (FAST_IS_REG(dst)) 1783 return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(TMP_LR)); 1784 1785 /* Memory. */ 1786 return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_LR, dst, dstw); 1787 } 1788 1789 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw) 1790 { 1791 CHECK_ERROR(); 1792 CHECK(check_sljit_emit_fast_return(compiler, src, srcw)); 1793 ADJUST_LOCAL_OFFSET(src, srcw); 1794 1795 if (FAST_IS_REG(src)) 1796 FAIL_IF(push_inst(compiler, ORR | RD(TMP_LR) | RN(TMP_ZERO) | RM(src))); 1797 else if (src & SLJIT_MEM) 1798 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_LR, src, srcw)); 1799 else if (src & SLJIT_IMM) 1800 FAIL_IF(load_immediate(compiler, TMP_LR, srcw)); 1801 1802 return push_inst(compiler, RET | RN(TMP_LR)); 1803 } 1804 1805 /* --------------------------------------------------------------------- */ 1806 /* Conditional instructions */ 1807 /* --------------------------------------------------------------------- */ 1808 1809 static sljit_uw get_cc(sljit_s32 type) 1810 { 1811 switch (type) { 1812 case SLJIT_EQUAL: 1813 case SLJIT_MUL_NOT_OVERFLOW: 1814 case SLJIT_EQUAL_F64: 1815 return 0x1; 1816 1817 case SLJIT_NOT_EQUAL: 1818 case SLJIT_MUL_OVERFLOW: 1819 case SLJIT_NOT_EQUAL_F64: 1820 return 0x0; 1821 1822 case SLJIT_LESS: 1823 case SLJIT_LESS_F64: 1824 return 0x2; 1825 1826 case SLJIT_GREATER_EQUAL: 1827 case SLJIT_GREATER_EQUAL_F64: 1828 return 0x3; 1829 1830 case SLJIT_GREATER: 1831 case SLJIT_GREATER_F64: 1832 return 0x9; 1833 1834 case SLJIT_LESS_EQUAL: 1835 case SLJIT_LESS_EQUAL_F64: 1836 return 0x8; 1837 1838 case SLJIT_SIG_LESS: 1839 return 0xa; 1840 1841 case SLJIT_SIG_GREATER_EQUAL: 1842 return 0xb; 1843 1844 case SLJIT_SIG_GREATER: 1845 return 0xd; 1846 1847 case SLJIT_SIG_LESS_EQUAL: 1848 return 0xc; 1849 1850 case SLJIT_OVERFLOW: 1851 case SLJIT_UNORDERED_F64: 1852 return 0x7; 1853 1854 case SLJIT_NOT_OVERFLOW: 1855 case SLJIT_ORDERED_F64: 1856 return 0x6; 1857 1858 default: 1859 SLJIT_ASSERT_STOP(); 1860 return 0xe; 1861 } 1862 } 1863 1864 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) 1865 { 1866 struct sljit_label *label; 1867 1868 CHECK_ERROR_PTR(); 1869 CHECK_PTR(check_sljit_emit_label(compiler)); 1870 1871 if (compiler->last_label && compiler->last_label->size == compiler->size) 1872 return compiler->last_label; 1873 1874 label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); 1875 PTR_FAIL_IF(!label); 1876 set_label(label, compiler); 1877 return label; 1878 } 1879 1880 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type) 1881 { 1882 struct sljit_jump *jump; 1883 1884 CHECK_ERROR_PTR(); 1885 CHECK_PTR(check_sljit_emit_jump(compiler, type)); 1886 1887 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); 1888 PTR_FAIL_IF(!jump); 1889 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); 1890 type &= 0xff; 1891 1892 if (type < SLJIT_JUMP) { 1893 jump->flags |= IS_COND; 1894 PTR_FAIL_IF(push_inst(compiler, B_CC | (6 << 5) | get_cc(type))); 1895 } 1896 else if (type >= SLJIT_FAST_CALL) 1897 jump->flags |= IS_BL; 1898 1899 PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0)); 1900 jump->addr = compiler->size; 1901 PTR_FAIL_IF(push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1))); 1902 1903 return jump; 1904 } 1905 1906 static SLJIT_INLINE struct sljit_jump* emit_cmp_to0(struct sljit_compiler *compiler, sljit_s32 type, 1907 sljit_s32 src, sljit_sw srcw) 1908 { 1909 struct sljit_jump *jump; 1910 sljit_ins inv_bits = (type & SLJIT_I32_OP) ? (1 << 31) : 0; 1911 1912 SLJIT_ASSERT((type & 0xff) == SLJIT_EQUAL || (type & 0xff) == SLJIT_NOT_EQUAL); 1913 ADJUST_LOCAL_OFFSET(src, srcw); 1914 1915 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); 1916 PTR_FAIL_IF(!jump); 1917 set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); 1918 jump->flags |= IS_CBZ | IS_COND; 1919 1920 if (src & SLJIT_MEM) { 1921 PTR_FAIL_IF(emit_op_mem(compiler, inv_bits ? INT_SIZE : WORD_SIZE, TMP_REG1, src, srcw)); 1922 src = TMP_REG1; 1923 } 1924 else if (src & SLJIT_IMM) { 1925 PTR_FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); 1926 src = TMP_REG1; 1927 } 1928 SLJIT_ASSERT(FAST_IS_REG(src)); 1929 1930 if ((type & 0xff) == SLJIT_EQUAL) 1931 inv_bits |= 1 << 24; 1932 1933 PTR_FAIL_IF(push_inst(compiler, (CBZ ^ inv_bits) | (6 << 5) | RT(src))); 1934 PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0)); 1935 jump->addr = compiler->size; 1936 PTR_FAIL_IF(push_inst(compiler, BR | RN(TMP_REG1))); 1937 return jump; 1938 } 1939 1940 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw) 1941 { 1942 struct sljit_jump *jump; 1943 1944 CHECK_ERROR(); 1945 CHECK(check_sljit_emit_ijump(compiler, type, src, srcw)); 1946 ADJUST_LOCAL_OFFSET(src, srcw); 1947 1948 /* In ARM, we don't need to touch the arguments. */ 1949 if (!(src & SLJIT_IMM)) { 1950 if (src & SLJIT_MEM) { 1951 FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw)); 1952 src = TMP_REG1; 1953 } 1954 return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(src)); 1955 } 1956 1957 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); 1958 FAIL_IF(!jump); 1959 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0)); 1960 jump->u.target = srcw; 1961 1962 FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0)); 1963 jump->addr = compiler->size; 1964 return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1)); 1965 } 1966 1967 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op, 1968 sljit_s32 dst, sljit_sw dstw, 1969 sljit_s32 src, sljit_sw srcw, 1970 sljit_s32 type) 1971 { 1972 sljit_s32 dst_r, flags, mem_flags; 1973 sljit_ins cc; 1974 1975 CHECK_ERROR(); 1976 CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type)); 1977 ADJUST_LOCAL_OFFSET(dst, dstw); 1978 ADJUST_LOCAL_OFFSET(src, srcw); 1979 1980 if (dst == SLJIT_UNUSED) 1981 return SLJIT_SUCCESS; 1982 1983 cc = get_cc(type & 0xff); 1984 dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; 1985 1986 if (GET_OPCODE(op) < SLJIT_ADD) { 1987 FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(dst_r) | RN(TMP_ZERO) | RM(TMP_ZERO))); 1988 if (dst_r != TMP_REG1) 1989 return SLJIT_SUCCESS; 1990 return emit_op_mem(compiler, (GET_OPCODE(op) == SLJIT_MOV ? WORD_SIZE : INT_SIZE) | STORE, TMP_REG1, dst, dstw); 1991 } 1992 1993 compiler->cache_arg = 0; 1994 compiler->cache_argw = 0; 1995 flags = GET_FLAGS(op) ? SET_FLAGS : 0; 1996 mem_flags = WORD_SIZE; 1997 if (op & SLJIT_I32_OP) { 1998 flags |= INT_OP; 1999 mem_flags = INT_SIZE; 2000 } 2001 2002 if (src & SLJIT_MEM) { 2003 FAIL_IF(emit_op_mem2(compiler, mem_flags, TMP_REG1, src, srcw, dst, dstw)); 2004 src = TMP_REG1; 2005 srcw = 0; 2006 } else if (src & SLJIT_IMM) 2007 flags |= ARG1_IMM; 2008 2009 FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(TMP_REG2) | RN(TMP_ZERO) | RM(TMP_ZERO))); 2010 emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src, TMP_REG2); 2011 2012 if (dst_r != TMP_REG1) 2013 return SLJIT_SUCCESS; 2014 return emit_op_mem2(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0); 2015 } 2016 2017 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value) 2018 { 2019 struct sljit_const *const_; 2020 sljit_s32 dst_r; 2021 2022 CHECK_ERROR_PTR(); 2023 CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value)); 2024 ADJUST_LOCAL_OFFSET(dst, dstw); 2025 2026 const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); 2027 PTR_FAIL_IF(!const_); 2028 set_const(const_, compiler); 2029 2030 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; 2031 PTR_FAIL_IF(emit_imm64_const(compiler, dst_r, init_value)); 2032 2033 if (dst & SLJIT_MEM) 2034 PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw)); 2035 return const_; 2036 } 2037 2038 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) 2039 { 2040 sljit_ins* inst = (sljit_ins*)addr; 2041 modify_imm64_const(inst, new_addr); 2042 SLJIT_CACHE_FLUSH(inst, inst + 4); 2043 } 2044 2045 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant) 2046 { 2047 sljit_ins* inst = (sljit_ins*)addr; 2048 modify_imm64_const(inst, new_constant); 2049 SLJIT_CACHE_FLUSH(inst, inst + 4); 2050 } 2051
