sljit/sljitNativeARM_v5.c

   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright 2009-2012 Zoltan Herczeg (hzmester@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 SLJIT_CONST char* sljit_get_platform_name()
  28 {
  29 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
  30         return "ARMv7" SLJIT_CPUINFO;
  31 #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
  32         return "ARMv5" SLJIT_CPUINFO;
  33 #else
  34 #error "Internal error: Unknown ARM architecture"
  35 #endif
  36 }
  37
  38 /* Last register + 1. */
  39 #define TMP_REG1        (SLJIT_NO_REGISTERS + 1)
  40 #define TMP_REG2        (SLJIT_NO_REGISTERS + 2)
  41 #define TMP_REG3        (SLJIT_NO_REGISTERS + 3)
  42 #define TMP_PC          (SLJIT_NO_REGISTERS + 4)
  43
  44 #define TMP_FREG1       (SLJIT_FLOAT_REG4 + 1)
  45 #define TMP_FREG2       (SLJIT_FLOAT_REG4 + 2)
  46
  47 /* In ARM instruction words.
  48    Cache lines are usually 32 byte aligned. */
  49 #define CONST_POOL_ALIGNMENT    8
  50 #define CONST_POOL_EMPTY        0xffffffff
  51
  52 #define ALIGN_INSTRUCTION(ptr) \
  53         (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1))
  54 #define MAX_DIFFERENCE(max_diff) \
  55         (((max_diff) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1))
  56
  57 /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
  58 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
  59   0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15
  60 };
  61
  62 #define RM(rm) (reg_map[rm])
  63 #define RD(rd) (reg_map[rd] << 12)
  64 #define RN(rn) (reg_map[rn] << 16)
  65
  66 /* --------------------------------------------------------------------- */
  67 /*  Instrucion forms                                                     */
  68 /* --------------------------------------------------------------------- */
  69
  70 /* The instruction includes the AL condition.
  71    INST_NAME - CONDITIONAL remove this flag. */
  72 #define COND_MASK       0xf0000000
  73 #define CONDITIONAL     0xe0000000
  74 #define PUSH_POOL       0xff000000
  75
  76 /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */
  77 #define ADC_DP          0x5
  78 #define ADD_DP          0x4
  79 #define AND_DP          0x0
  80 #define B               0xea000000
  81 #define BIC_DP          0xe
  82 #define BL              0xeb000000
  83 #define BLX             0xe12fff30
  84 #define BX              0xe12fff10
  85 #define CLZ             0xe16f0f10
  86 #define CMP_DP          0xa
  87 #define BKPT            0xe1200070
  88 #define EOR_DP          0x1
  89 #define MOV_DP          0xd
  90 #define MUL             0xe0000090
  91 #define MVN_DP          0xf
  92 #define NOP             0xe1a00000
  93 #define ORR_DP          0xc
  94 #define PUSH            0xe92d0000
  95 #define POP             0xe8bd0000
  96 #define RSB_DP          0x3
  97 #define RSC_DP          0x7
  98 #define SBC_DP          0x6
  99 #define SMULL           0xe0c00090
 100 #define SUB_DP          0x2
 101 #define UMULL           0xe0800090
 102 #define VABS_F64        0xeeb00bc0
 103 #define VADD_F64        0xee300b00
 104 #define VCMP_F64        0xeeb40b40
 105 #define VDIV_F64        0xee800b00
 106 #define VMOV_F64        0xeeb00b40
 107 #define VMRS            0xeef1fa10
 108 #define VMUL_F64        0xee200b00
 109 #define VNEG_F64        0xeeb10b40
 110 #define VSTR            0xed000b00
 111 #define VSUB_F64        0xee300b40
 112
 113 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
 114 /* Arm v7 specific instructions. */
 115 #define MOVW            0xe3000000
 116 #define MOVT            0xe3400000
 117 #define SXTB            0xe6af0070
 118 #define SXTH            0xe6bf0070
 119 #define UXTB            0xe6ef0070
 120 #define UXTH            0xe6ff0070
 121 #endif
 122
 123 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 124
 125 static int push_cpool(struct sljit_compiler *compiler)
 126 {
 127         /* Pushing the constant pool into the instruction stream. */
 128         sljit_uw* inst;
 129         sljit_uw* cpool_ptr;
 130         sljit_uw* cpool_end;
 131         int i;
 132
 133         /* The label could point the address after the constant pool. */
 134         if (compiler->last_label && compiler->last_label->size == compiler->size)
 135                 compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
 136
 137         SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
 138         inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 139         FAIL_IF(!inst);
 140         compiler->size++;
 141         *inst = 0xff000000 | compiler->cpool_fill;
 142
 143         for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
 144                 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 145                 FAIL_IF(!inst);
 146                 compiler->size++;
 147                 *inst = 0;
 148         }
 149
 150         cpool_ptr = compiler->cpool;
 151         cpool_end = cpool_ptr + compiler->cpool_fill;
 152         while (cpool_ptr < cpool_end) {
 153                 inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 154                 FAIL_IF(!inst);
 155                 compiler->size++;
 156                 *inst = *cpool_ptr++;
 157         }
 158         compiler->cpool_diff = CONST_POOL_EMPTY;
 159         compiler->cpool_fill = 0;
 160         return SLJIT_SUCCESS;
 161 }
 162
 163 static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
 164 {
 165         sljit_uw* ptr;
 166
 167         if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
 168                 FAIL_IF(push_cpool(compiler));
 169
 170         ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 171         FAIL_IF(!ptr);
 172         compiler->size++;
 173         *ptr = inst;
 174         return SLJIT_SUCCESS;
 175 }
 176
 177 static int push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
 178 {
 179         sljit_uw* ptr;
 180         sljit_uw cpool_index = CPOOL_SIZE;
 181         sljit_uw* cpool_ptr;
 182         sljit_uw* cpool_end;
 183         sljit_ub* cpool_unique_ptr;
 184
 185         if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
 186                 FAIL_IF(push_cpool(compiler));
 187         else if (compiler->cpool_fill > 0) {
 188                 cpool_ptr = compiler->cpool;
 189                 cpool_end = cpool_ptr + compiler->cpool_fill;
 190                 cpool_unique_ptr = compiler->cpool_unique;
 191                 do {
 192                         if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
 193                                 cpool_index = cpool_ptr - compiler->cpool;
 194                                 break;
 195                         }
 196                         cpool_ptr++;
 197                         cpool_unique_ptr++;
 198                 } while (cpool_ptr < cpool_end);
 199         }
 200
 201         if (cpool_index == CPOOL_SIZE) {
 202                 /* Must allocate a new entry in the literal pool. */
 203                 if (compiler->cpool_fill < CPOOL_SIZE) {
 204                         cpool_index = compiler->cpool_fill;
 205                         compiler->cpool_fill++;
 206                 }
 207                 else {
 208                         FAIL_IF(push_cpool(compiler));
 209                         cpool_index = 0;
 210                         compiler->cpool_fill = 1;
 211                 }
 212         }
 213
 214         SLJIT_ASSERT((inst & 0xfff) == 0);
 215         ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 216         FAIL_IF(!ptr);
 217         compiler->size++;
 218         *ptr = inst | cpool_index;
 219
 220         compiler->cpool[cpool_index] = literal;
 221         compiler->cpool_unique[cpool_index] = 0;
 222         if (compiler->cpool_diff == CONST_POOL_EMPTY)
 223                 compiler->cpool_diff = compiler->size;
 224         return SLJIT_SUCCESS;
 225 }
 226
 227 static int push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal)
 228 {
 229         sljit_uw* ptr;
 230         if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
 231                 FAIL_IF(push_cpool(compiler));
 232
 233         SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
 234         ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 235         FAIL_IF(!ptr);
 236         compiler->size++;
 237         *ptr = inst | compiler->cpool_fill;
 238
 239         compiler->cpool[compiler->cpool_fill] = literal;
 240         compiler->cpool_unique[compiler->cpool_fill] = 1;
 241         compiler->cpool_fill++;
 242         if (compiler->cpool_diff == CONST_POOL_EMPTY)
 243                 compiler->cpool_diff = compiler->size;
 244         return SLJIT_SUCCESS;
 245 }
 246
 247 static SLJIT_INLINE int prepare_blx(struct sljit_compiler *compiler)
 248 {
 249         /* Place for at least two instruction (doesn't matter whether the first has a literal). */
 250         if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
 251                 return push_cpool(compiler);
 252         return SLJIT_SUCCESS;
 253 }
 254
 255 static SLJIT_INLINE int emit_blx(struct sljit_compiler *compiler)
 256 {
 257         /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
 258         SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
 259         return push_inst(compiler, BLX | RM(TMP_REG1));
 260 }
 261
 262 static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
 263 {
 264         sljit_uw diff;
 265         sljit_uw ind;
 266         sljit_uw counter = 0;
 267         sljit_uw* clear_const_pool = const_pool;
 268         sljit_uw* clear_const_pool_end = const_pool + cpool_size;
 269
 270         SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
 271         /* Set unused flag for all literals in the constant pool.
 272            I.e.: unused literals can belong to branches, which can be encoded as B or BL.
 273            We can "compress" the constant pool by discarding these literals. */
 274         while (clear_const_pool < clear_const_pool_end)
 275                 *clear_const_pool++ = (sljit_uw)(-1);
 276
 277         while (last_pc_patch < code_ptr) {
 278                 /* Data transfer instruction with Rn == r15. */
 279                 if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) {
 280                         diff = const_pool - last_pc_patch;
 281                         ind = (*last_pc_patch) & 0xfff;
 282
 283                         /* Must be a load instruction with immediate offset. */
 284                         SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
 285                         if ((int)const_pool[ind] < 0) {
 286                                 const_pool[ind] = counter;
 287                                 ind = counter;
 288                                 counter++;
 289                         }
 290                         else
 291                                 ind = const_pool[ind];
 292
 293                         SLJIT_ASSERT(diff >= 1);
 294                         if (diff >= 2 || ind > 0) {
 295                                 diff = (diff + ind - 2) << 2;
 296                                 SLJIT_ASSERT(diff <= 0xfff);
 297                                 *last_pc_patch = (*last_pc_patch & ~0xfff) | diff;
 298                         }
 299                         else
 300                                 *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004;
 301                 }
 302                 last_pc_patch++;
 303         }
 304         return counter;
 305 }
 306
 307 /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
 308 struct future_patch {
 309         struct future_patch* next;
 310         int index;
 311         int value;
 312 };
 313
 314 static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
 315 {
 316         int value;
 317         struct future_patch *curr_patch, *prev_patch;
 318
 319         /* Using the values generated by patch_pc_relative_loads. */
 320         if (!*first_patch)
 321                 value = (int)cpool_start_address[cpool_current_index];
 322         else {
 323                 curr_patch = *first_patch;
 324                 prev_patch = 0;
 325                 while (1) {
 326                         if (!curr_patch) {
 327                                 value = (int)cpool_start_address[cpool_current_index];
 328                                 break;
 329                         }
 330                         if ((sljit_uw)curr_patch->index == cpool_current_index) {
 331                                 value = curr_patch->value;
 332                                 if (prev_patch)
 333                                         prev_patch->next = curr_patch->next;
 334                                 else
 335                                         *first_patch = curr_patch->next;
 336                                 SLJIT_FREE(curr_patch);
 337                                 break;
 338                         }
 339                         prev_patch = curr_patch;
 340                         curr_patch = curr_patch->next;
 341                 }
 342         }
 343
 344         if (value >= 0) {
 345                 if ((sljit_uw)value > cpool_current_index) {
 346                         curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch));
 347                         if (!curr_patch) {
 348                                 while (*first_patch) {
 349                                         curr_patch = *first_patch;
 350                                         *first_patch = (*first_patch)->next;
 351                                         SLJIT_FREE(curr_patch);
 352                                 }
 353                                 return SLJIT_ERR_ALLOC_FAILED;
 354                         }
 355                         curr_patch->next = *first_patch;
 356                         curr_patch->index = value;
 357                         curr_patch->value = cpool_start_address[value];
 358                         *first_patch = curr_patch;
 359                 }
 360                 cpool_start_address[value] = *buf_ptr;
 361         }
 362         return SLJIT_SUCCESS;
 363 }
 364
 365 #else
 366
 367 static int push_inst(struct sljit_compiler *compiler, sljit_uw inst)
 368 {
 369         sljit_uw* ptr;
 370
 371         ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw));
 372         FAIL_IF(!ptr);
 373         compiler->size++;
 374         *ptr = inst;
 375         return SLJIT_SUCCESS;
 376 }
 377
 378 static SLJIT_INLINE int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w imm)
 379 {
 380         FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
 381         return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
 382 }
 383
 384 #endif
 385
 386 static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
 387 {
 388         sljit_w diff;
 389
 390         if (jump->flags & SLJIT_REWRITABLE_JUMP)
 391                 return 0;
 392
 393 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 394         if (jump->flags & IS_BL)
 395                 code_ptr--;
 396
 397         if (jump->flags & JUMP_ADDR)
 398                 diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2));
 399         else {
 400                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 401                 diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2));
 402         }
 403
 404         /* Branch to Thumb code has not been optimized yet. */
 405         if (diff & 0x3)
 406                 return 0;
 407
 408         diff >>= 2;
 409         if (jump->flags & IS_BL) {
 410                 if (diff <= 0x01ffffff && diff >= -0x02000000) {
 411                         *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
 412                         jump->flags |= PATCH_B;
 413                         return 1;
 414                 }
 415         }
 416         else {
 417                 if (diff <= 0x01ffffff && diff >= -0x02000000) {
 418                         *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
 419                         jump->flags |= PATCH_B;
 420                 }
 421         }
 422 #else
 423         if (jump->flags & JUMP_ADDR)
 424                 diff = ((sljit_w)jump->u.target - (sljit_w)code_ptr);
 425         else {
 426                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 427                 diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr);
 428         }
 429
 430         /* Branch to Thumb code has not been optimized yet. */
 431         if (diff & 0x3)
 432                 return 0;
 433
 434         diff >>= 2;
 435         if (diff <= 0x01ffffff && diff >= -0x02000000) {
 436                 code_ptr -= 2;
 437                 *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
 438                 jump->flags |= PATCH_B;
 439                 return 1;
 440         }
 441 #endif
 442         return 0;
 443 }
 444
 445 static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
 446 {
 447 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 448         sljit_uw *ptr = (sljit_uw*)addr;
 449         sljit_uw *inst = (sljit_uw*)ptr[0];
 450         sljit_uw mov_pc = ptr[1];
 451         int bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
 452         sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2);
 453
 454         if (diff <= 0x7fffff && diff >= -0x800000) {
 455                 /* Turn to branch. */
 456                 if (!bl) {
 457                         inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
 458                         if (flush) {
 459                                 SLJIT_CACHE_FLUSH(inst, inst + 1);
 460                         }
 461                 } else {
 462                         inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
 463                         inst[1] = NOP;
 464                         if (flush) {
 465                                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 466                         }
 467                 }
 468         } else {
 469                 /* Get the position of the constant. */
 470                 if (mov_pc & (1 << 23))
 471                         ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
 472                 else
 473                         ptr = inst + 1;
 474
 475                 if (*inst != mov_pc) {
 476                         inst[0] = mov_pc;
 477                         if (!bl) {
 478                                 if (flush) {
 479                                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 480                                 }
 481                         } else {
 482                                 inst[1] = BLX | RM(TMP_REG1);
 483                                 if (flush) {
 484                                         SLJIT_CACHE_FLUSH(inst, inst + 2);
 485                                 }
 486                         }
 487                 }
 488                 *ptr = new_addr;
 489         }
 490 #else
 491         sljit_uw *inst = (sljit_uw*)addr;
 492         SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 493         inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
 494         inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
 495         if (flush) {
 496                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 497         }
 498 #endif
 499 }
 500
 501 static sljit_uw get_immediate(sljit_uw imm);
 502
 503 static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush)
 504 {
 505 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 506         sljit_uw *ptr = (sljit_uw*)addr;
 507         sljit_uw *inst = (sljit_uw*)ptr[0];
 508         sljit_uw ldr_literal = ptr[1];
 509         sljit_uw src2;
 510
 511         src2 = get_immediate(new_constant);
 512         if (src2) {
 513                 *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
 514                 if (flush) {
 515                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 516                 }
 517                 return;
 518         }
 519
 520         src2 = get_immediate(~new_constant);
 521         if (src2) {
 522                 *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
 523                 if (flush) {
 524                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 525                 }
 526                 return;
 527         }
 528
 529         if (ldr_literal & (1 << 23))
 530                 ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
 531         else
 532                 ptr = inst + 1;
 533
 534         if (*inst != ldr_literal) {
 535                 *inst = ldr_literal;
 536                 if (flush) {
 537                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 538                 }
 539         }
 540         *ptr = new_constant;
 541 #else
 542         sljit_uw *inst = (sljit_uw*)addr;
 543         SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 544         inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
 545         inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
 546         if (flush) {
 547                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 548         }
 549 #endif
 550 }
 551
 552 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
 553 {
 554         struct sljit_memory_fragment *buf;
 555         sljit_uw *code;
 556         sljit_uw *code_ptr;
 557         sljit_uw *buf_ptr;
 558         sljit_uw *buf_end;
 559         sljit_uw size;
 560         sljit_uw word_count;
 561 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 562         sljit_uw cpool_size;
 563         sljit_uw cpool_skip_alignment;
 564         sljit_uw cpool_current_index;
 565         sljit_uw *cpool_start_address;
 566         sljit_uw *last_pc_patch;
 567         struct future_patch *first_patch;
 568 #endif
 569
 570         struct sljit_label *label;
 571         struct sljit_jump *jump;
 572         struct sljit_const *const_;
 573
 574         CHECK_ERROR_PTR();
 575         check_sljit_generate_code(compiler);
 576         reverse_buf(compiler);
 577
 578         /* Second code generation pass. */
 579 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 580         size = compiler->size + (compiler->patches << 1);
 581         if (compiler->cpool_fill > 0)
 582                 size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
 583 #else
 584         size = compiler->size;
 585 #endif
 586         code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
 587         PTR_FAIL_WITH_EXEC_IF(code);
 588         buf = compiler->buf;
 589
 590 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 591         cpool_size = 0;
 592         cpool_skip_alignment = 0;
 593         cpool_current_index = 0;
 594         cpool_start_address = NULL;
 595         first_patch = NULL;
 596         last_pc_patch = code;
 597 #endif
 598
 599         code_ptr = code;
 600         word_count = 0;
 601
 602         label = compiler->labels;
 603         jump = compiler->jumps;
 604         const_ = compiler->consts;
 605
 606         if (label && label->size == 0) {
 607                 label->addr = (sljit_uw)code;
 608                 label->size = 0;
 609                 label = label->next;
 610         }
 611
 612         do {
 613                 buf_ptr = (sljit_uw*)buf->memory;
 614                 buf_end = buf_ptr + (buf->used_size >> 2);
 615                 do {
 616                         word_count++;
 617 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 618                         if (cpool_size > 0) {
 619                                 if (cpool_skip_alignment > 0) {
 620                                         buf_ptr++;
 621                                         cpool_skip_alignment--;
 622                                 }
 623                                 else {
 624                                         if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
 625                                                 SLJIT_FREE_EXEC(code);
 626                                                 compiler->error = SLJIT_ERR_ALLOC_FAILED;
 627                                                 return NULL;
 628                                         }
 629                                         buf_ptr++;
 630                                         if (++cpool_current_index >= cpool_size) {
 631                                                 SLJIT_ASSERT(!first_patch);
 632                                                 cpool_size = 0;
 633                                                 if (label && label->size == word_count) {
 634                                                         /* Points after the current instruction. */
 635                                                         label->addr = (sljit_uw)code_ptr;
 636                                                         label->size = code_ptr - code;
 637                                                         label = label->next;
 638                                                 }
 639                                         }
 640                                 }
 641                         }
 642                         else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
 643 #endif
 644                                 *code_ptr = *buf_ptr++;
 645                                 /* These structures are ordered by their address. */
 646                                 SLJIT_ASSERT(!label || label->size >= word_count);
 647                                 SLJIT_ASSERT(!jump || jump->addr >= word_count);
 648                                 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
 649                                 if (jump && jump->addr == word_count) {
 650 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 651                                         if (detect_jump_type(jump, code_ptr, code))
 652                                                 code_ptr--;
 653                                         jump->addr = (sljit_uw)code_ptr;
 654 #else
 655                                         jump->addr = (sljit_uw)(code_ptr - 2);
 656                                         if (detect_jump_type(jump, code_ptr, code))
 657                                                 code_ptr -= 2;
 658 #endif
 659                                         jump = jump->next;
 660                                 }
 661                                 if (label && label->size == word_count) {
 662                                         /* code_ptr can be affected above. */
 663                                         label->addr = (sljit_uw)(code_ptr + 1);
 664                                         label->size = (code_ptr + 1) - code;
 665                                         label = label->next;
 666                                 }
 667                                 if (const_ && const_->addr == word_count) {
 668 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 669                                         const_->addr = (sljit_uw)code_ptr;
 670 #else
 671                                         const_->addr = (sljit_uw)(code_ptr - 1);
 672 #endif
 673                                         const_ = const_->next;
 674                                 }
 675                                 code_ptr++;
 676 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 677                         }
 678                         else {
 679                                 /* Fortunately, no need to shift. */
 680                                 cpool_size = *buf_ptr++ & ~PUSH_POOL;
 681                                 SLJIT_ASSERT(cpool_size > 0);
 682                                 cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
 683                                 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
 684                                 if (cpool_current_index > 0) {
 685                                         /* Unconditional branch. */
 686                                         *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
 687                                         code_ptr = cpool_start_address + cpool_current_index;
 688                                 }
 689                                 cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
 690                                 cpool_current_index = 0;
 691                                 last_pc_patch = code_ptr;
 692                         }
 693 #endif
 694                 } while (buf_ptr < buf_end);
 695                 buf = buf->next;
 696         } while (buf);
 697
 698         SLJIT_ASSERT(!label);
 699         SLJIT_ASSERT(!jump);
 700         SLJIT_ASSERT(!const_);
 701
 702 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 703         SLJIT_ASSERT(cpool_size == 0);
 704         if (compiler->cpool_fill > 0) {
 705                 cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
 706                 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
 707                 if (cpool_current_index > 0)
 708                         code_ptr = cpool_start_address + cpool_current_index;
 709
 710                 buf_ptr = compiler->cpool;
 711                 buf_end = buf_ptr + compiler->cpool_fill;
 712                 cpool_current_index = 0;
 713                 while (buf_ptr < buf_end) {
 714                         if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
 715                                 SLJIT_FREE_EXEC(code);
 716                                 compiler->error = SLJIT_ERR_ALLOC_FAILED;
 717                                 return NULL;
 718                         }
 719                         buf_ptr++;
 720                         cpool_current_index++;
 721                 }
 722                 SLJIT_ASSERT(!first_patch);
 723         }
 724 #endif
 725
 726         jump = compiler->jumps;
 727         while (jump) {
 728                 buf_ptr = (sljit_uw*)jump->addr;
 729
 730                 if (jump->flags & PATCH_B) {
 731                         if (!(jump->flags & JUMP_ADDR)) {
 732                                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 733                                 SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
 734                                 *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
 735                         }
 736                         else {
 737                                 SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000);
 738                                 *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff;
 739                         }
 740                 }
 741                 else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
 742 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 743                         jump->addr = (sljit_uw)code_ptr;
 744                         code_ptr[0] = (sljit_uw)buf_ptr;
 745                         code_ptr[1] = *buf_ptr;
 746                         inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 747                         code_ptr += 2;
 748 #else
 749                         inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 750 #endif
 751                 }
 752                 else {
 753 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 754                         if (jump->flags & IS_BL)
 755                                 buf_ptr--;
 756                         if (*buf_ptr & (1 << 23))
 757                                 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
 758                         else
 759                                 buf_ptr += 1;
 760                         *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
 761 #else
 762                         inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 763 #endif
 764                 }
 765                 jump = jump->next;
 766         }
 767
 768 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 769         const_ = compiler->consts;
 770         while (const_) {
 771                 buf_ptr = (sljit_uw*)const_->addr;
 772                 const_->addr = (sljit_uw)code_ptr;
 773
 774                 code_ptr[0] = (sljit_uw)buf_ptr;
 775                 code_ptr[1] = *buf_ptr;
 776                 if (*buf_ptr & (1 << 23))
 777                         buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
 778                 else
 779                         buf_ptr += 1;
 780                 /* Set the value again (can be a simple constant). */
 781                 inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
 782                 code_ptr += 2;
 783
 784                 const_ = const_->next;
 785         }
 786 #endif
 787
 788         SLJIT_ASSERT(code_ptr - code <= (int)size);
 789
 790         SLJIT_CACHE_FLUSH(code, code_ptr);
 791         compiler->error = SLJIT_ERR_COMPILED;
 792         compiler->executable_size = size * sizeof(sljit_uw);
 793         return code;
 794 }
 795
 796 /* emit_op inp_flags.
 797    WRITE_BACK must be the first, since it is a flag. */
 798 #define WRITE_BACK      0x01
 799 #define ALLOW_IMM       0x02
 800 #define ALLOW_INV_IMM   0x04
 801 #define ALLOW_ANY_IMM   (ALLOW_IMM | ALLOW_INV_IMM)
 802 #define ARG_TEST        0x08
 803
 804 /* Creates an index in data_transfer_insts array. */
 805 #define WORD_DATA       0x00
 806 #define BYTE_DATA       0x10
 807 #define HALF_DATA       0x20
 808 #define SIGNED_DATA     0x40
 809 #define LOAD_DATA       0x80
 810
 811 #define EMIT_INSTRUCTION(inst) \
 812         FAIL_IF(push_inst(compiler, (inst)))
 813
 814 /* Condition: AL. */
 815 #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
 816         (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
 817
 818 static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
 819         int dst, sljit_w dstw,
 820         int src1, sljit_w src1w,
 821         int src2, sljit_w src2w);
 822
 823 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int saveds, int local_size)
 824 {
 825         int size;
 826         sljit_uw push;
 827
 828         CHECK_ERROR();
 829         check_sljit_emit_enter(compiler, args, temporaries, saveds, local_size);
 830
 831         compiler->temporaries = temporaries;
 832         compiler->saveds = saveds;
 833
 834         /* Push saved registers, temporary registers
 835            stmdb sp!, {..., lr} */
 836         push = PUSH | (1 << 14);
 837         if (temporaries >= 5)
 838                 push |= 1 << 11;
 839         if (temporaries >= 4)
 840                 push |= 1 << 10;
 841         if (saveds >= 5)
 842                 push |= 1 << 8;
 843         if (saveds >= 4)
 844                 push |= 1 << 7;
 845         if (saveds >= 3)
 846                 push |= 1 << 6;
 847         if (saveds >= 2)
 848                 push |= 1 << 5;
 849         if (saveds >= 1)
 850                 push |= 1 << 4;
 851         EMIT_INSTRUCTION(push);
 852
 853         /* Stack must be aligned to 8 bytes: */
 854         size = (1 + saveds) * sizeof(sljit_uw);
 855         if (temporaries >= 4)
 856                 size += (temporaries - 3) * sizeof(sljit_uw);
 857         local_size += size;
 858         local_size = (local_size + 7) & ~7;
 859         local_size -= size;
 860         compiler->local_size = local_size;
 861         if (local_size > 0)
 862                 FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
 863
 864         if (args >= 1)
 865                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1)));
 866         if (args >= 2)
 867                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
 868         if (args >= 3)
 869                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3)));
 870
 871         return SLJIT_SUCCESS;
 872 }
 873
 874 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, int args, int temporaries, int saveds, int local_size)
 875 {
 876         int size;
 877
 878         CHECK_ERROR_VOID();
 879         check_sljit_set_context(compiler, args, temporaries, saveds, local_size);
 880
 881         compiler->temporaries = temporaries;
 882         compiler->saveds = saveds;
 883
 884         size = (1 + saveds) * sizeof(sljit_uw);
 885         if (temporaries >= 4)
 886                 size += (temporaries - 3) * sizeof(sljit_uw);
 887         local_size += size;
 888         local_size = (local_size + 7) & ~7;
 889         local_size -= size;
 890         compiler->local_size = local_size;
 891 }
 892
 893 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int op, int src, sljit_w srcw)
 894 {
 895         sljit_uw pop;
 896
 897         CHECK_ERROR();
 898         check_sljit_emit_return(compiler, op, src, srcw);
 899
 900         FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
 901
 902         if (compiler->local_size > 0)
 903                 FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
 904
 905         pop = POP | (1 << 15);
 906         /* Push saved registers, temporary registers
 907            ldmia sp!, {..., pc} */
 908         if (compiler->temporaries >= 5)
 909                 pop |= 1 << 11;
 910         if (compiler->temporaries >= 4)
 911                 pop |= 1 << 10;
 912         if (compiler->saveds >= 5)
 913                 pop |= 1 << 8;
 914         if (compiler->saveds >= 4)
 915                 pop |= 1 << 7;
 916         if (compiler->saveds >= 3)
 917                 pop |= 1 << 6;
 918         if (compiler->saveds >= 2)
 919                 pop |= 1 << 5;
 920         if (compiler->saveds >= 1)
 921                 pop |= 1 << 4;
 922
 923         return push_inst(compiler, pop);
 924 }
 925
 926 /* --------------------------------------------------------------------- */
 927 /*  Operators                                                            */
 928 /* --------------------------------------------------------------------- */
 929
 930 /* s/l - store/load (1 bit)
 931    u/s - signed/unsigned (1 bit)
 932    w/b/h/N - word/byte/half/NOT allowed (2 bit)
 933    It contans 16 items, but not all are different. */
 934
 935 static sljit_w data_transfer_insts[16] = {
 936 /* s u w */ 0xe5000000 /* str */,
 937 /* s u b */ 0xe5400000 /* strb */,
 938 /* s u h */ 0xe10000b0 /* strh */,
 939 /* s u N */ 0x00000000 /* not allowed */,
 940 /* s s w */ 0xe5000000 /* str */,
 941 /* s s b */ 0xe5400000 /* strb */,
 942 /* s s h */ 0xe10000b0 /* strh */,
 943 /* s s N */ 0x00000000 /* not allowed */,
 944
 945 /* l u w */ 0xe5100000 /* ldr */,
 946 /* l u b */ 0xe5500000 /* ldrb */,
 947 /* l u h */ 0xe11000b0 /* ldrh */,
 948 /* l u N */ 0x00000000 /* not allowed */,
 949 /* l s w */ 0xe5100000 /* ldr */,
 950 /* l s b */ 0xe11000d0 /* ldrsb */,
 951 /* l s h */ 0xe11000f0 /* ldrsh */,
 952 /* l s N */ 0x00000000 /* not allowed */,
 953 };
 954
 955 #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
 956         (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
 957 /* Normal ldr/str instruction.
 958    Type2: ldrsb, ldrh, ldrsh */
 959 #define IS_TYPE1_TRANSFER(type) \
 960         (data_transfer_insts[(type) >> 4] & 0x04000000)
 961 #define TYPE2_TRANSFER_IMM(imm) \
 962         (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
 963
 964 /* flags: */
 965   /* Arguments are swapped. */
 966 #define ARGS_SWAPPED    0x01
 967   /* Inverted immediate. */
 968 #define INV_IMM         0x02
 969   /* Source and destination is register. */
 970 #define REG_DEST        0x04
 971 #define REG_SOURCE      0x08
 972   /* One instruction is enough. */
 973 #define FAST_DEST       0x10
 974   /* Multiple instructions are required. */
 975 #define SLOW_DEST       0x20
 976 /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
 977 #define SET_FLAGS       (1 << 20)
 978 /* dst: reg
 979    src1: reg
 980    src2: reg or imm (if allowed)
 981    SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
 982 #define SRC2_IMM        (1 << 25)
 983
 984 #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
 985         return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
 986
 987 #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
 988         return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
 989
 990 #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
 991         SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
 992         if (compiler->shift_imm != 0x20) { \
 993                 SLJIT_ASSERT(src1 == TMP_REG1); \
 994                 SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
 995                 if (compiler->shift_imm != 0) \
 996                         return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \
 997                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, reg_map[src2])); \
 998         } \
 999         return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1])));
1000
1001 static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
1002         int dst, int src1, int src2)
1003 {
1004         sljit_w mul_inst;
1005
1006         switch (GET_OPCODE(op)) {
1007         case SLJIT_ADD:
1008                 SLJIT_ASSERT(!(flags & INV_IMM));
1009                 EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1010
1011         case SLJIT_ADDC:
1012                 SLJIT_ASSERT(!(flags & INV_IMM));
1013                 EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1014
1015         case SLJIT_SUB:
1016                 SLJIT_ASSERT(!(flags & INV_IMM));
1017                 if (!(flags & ARGS_SWAPPED))
1018                         EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1019                 EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1020
1021         case SLJIT_SUBC:
1022                 SLJIT_ASSERT(!(flags & INV_IMM));
1023                 if (!(flags & ARGS_SWAPPED))
1024                         EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1025                 EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1026
1027         case SLJIT_MUL:
1028                 SLJIT_ASSERT(!(flags & INV_IMM));
1029                 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1030                 if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1031                         mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1032                 else
1033                         mul_inst = MUL | (reg_map[dst] << 16);
1034
1035                 if (dst != src2)
1036                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1037                 else if (dst != src1)
1038                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1039                 else {
1040                         /* Rm and Rd must not be the same register. */
1041                         SLJIT_ASSERT(dst != TMP_REG1);
1042                         FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1043                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1044                 }
1045
1046                 if (!(op & SLJIT_SET_O))
1047                         return SLJIT_SUCCESS;
1048
1049                 /* We need to use TMP_REG3. */
1050                 compiler->cache_arg = 0;
1051                 compiler->cache_argw = 0;
1052                 /* cmp TMP_REG2, dst asr #31. */
1053                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1054
1055         case SLJIT_AND:
1056                 if (!(flags & INV_IMM))
1057                         EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1058                 EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1059
1060         case SLJIT_OR:
1061                 SLJIT_ASSERT(!(flags & INV_IMM));
1062                 EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1063
1064         case SLJIT_XOR:
1065                 SLJIT_ASSERT(!(flags & INV_IMM));
1066                 EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1067
1068         case SLJIT_SHL:
1069                 EMIT_SHIFT_INS_AND_RETURN(0);
1070
1071         case SLJIT_LSHR:
1072                 EMIT_SHIFT_INS_AND_RETURN(1);
1073
1074         case SLJIT_ASHR:
1075                 EMIT_SHIFT_INS_AND_RETURN(2);
1076
1077         case SLJIT_MOV:
1078                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1079                 if (dst != src2) {
1080                         if (src2 & SRC2_IMM) {
1081                                 if (flags & INV_IMM)
1082                                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1083                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1084                         }
1085                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
1086                 }
1087                 return SLJIT_SUCCESS;
1088
1089         case SLJIT_MOV_UB:
1090         case SLJIT_MOV_SB:
1091                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1092                 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1093 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1094                         if (op == SLJIT_MOV_UB)
1095                                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
1096                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
1097                         return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst]));
1098 #else
1099                         return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
1100 #endif
1101                 }
1102                 else if (dst != src2) {
1103                         SLJIT_ASSERT(src2 & SRC2_IMM);
1104                         if (flags & INV_IMM)
1105                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1106                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1107                 }
1108                 return SLJIT_SUCCESS;
1109
1110         case SLJIT_MOV_UH:
1111         case SLJIT_MOV_SH:
1112                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1113                 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1114 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1115                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
1116                         return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst]));
1117 #else
1118                         return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
1119 #endif
1120                 }
1121                 else if (dst != src2) {
1122                         SLJIT_ASSERT(src2 & SRC2_IMM);
1123                         if (flags & INV_IMM)
1124                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1125                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1126                 }
1127                 return SLJIT_SUCCESS;
1128
1129         case SLJIT_NOT:
1130                 if (src2 & SRC2_IMM) {
1131                         if (flags & INV_IMM)
1132                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1133                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1134                 }
1135                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
1136
1137         case SLJIT_CLZ:
1138                 SLJIT_ASSERT(!(flags & INV_IMM));
1139                 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1140                 FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1141                 if (flags & SET_FLAGS)
1142                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
1143                 return SLJIT_SUCCESS;
1144         }
1145         SLJIT_ASSERT_STOP();
1146         return SLJIT_SUCCESS;
1147 }
1148
1149 #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1150 #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1151 #undef EMIT_SHIFT_INS_AND_RETURN
1152
1153 /* Tests whether the immediate can be stored in the 12 bit imm field.
1154    Returns with 0 if not possible. */
1155 static sljit_uw get_immediate(sljit_uw imm)
1156 {
1157         int rol;
1158
1159         if (imm <= 0xff)
1160                 return SRC2_IMM | imm;
1161
1162         if (!(imm & 0xff000000)) {
1163                 imm <<= 8;
1164                 rol = 8;
1165         }
1166         else {
1167                 imm = (imm << 24) | (imm >> 8);
1168                 rol = 0;
1169         }
1170
1171         if (!(imm & 0xff000000)) {
1172                 imm <<= 8;
1173                 rol += 4;
1174         }
1175
1176         if (!(imm & 0xf0000000)) {
1177                 imm <<= 4;
1178                 rol += 2;
1179         }
1180
1181         if (!(imm & 0xc0000000)) {
1182                 imm <<= 2;
1183                 rol += 1;
1184         }
1185
1186         if (!(imm & 0x00ffffff))
1187                 return SRC2_IMM | (imm >> 24) | (rol << 8);
1188         else
1189                 return 0;
1190 }
1191
1192 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1193 static int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive)
1194 {
1195         sljit_uw mask;
1196         sljit_uw imm1;
1197         sljit_uw imm2;
1198         int rol;
1199
1200         /* Step1: Search a zero byte (8 continous zero bit). */
1201         mask = 0xff000000;
1202         rol = 8;
1203         while(1) {
1204                 if (!(imm & mask)) {
1205                         /* Rol imm by rol. */
1206                         imm = (imm << rol) | (imm >> (32 - rol));
1207                         /* Calculate arm rol. */
1208                         rol = 4 + (rol >> 1);
1209                         break;
1210                 }
1211                 rol += 2;
1212                 mask >>= 2;
1213                 if (mask & 0x3) {
1214                         /* rol by 8. */
1215                         imm = (imm << 8) | (imm >> 24);
1216                         mask = 0xff00;
1217                         rol = 24;
1218                         while (1) {
1219                                 if (!(imm & mask)) {
1220                                         /* Rol imm by rol. */
1221                                         imm = (imm << rol) | (imm >> (32 - rol));
1222                                         /* Calculate arm rol. */
1223                                         rol = (rol >> 1) - 8;
1224                                         break;
1225                                 }
1226                                 rol += 2;
1227                                 mask >>= 2;
1228                                 if (mask & 0x3)
1229                                         return 0;
1230                         }
1231                         break;
1232                 }
1233         }
1234
1235         /* The low 8 bit must be zero. */
1236         SLJIT_ASSERT(!(imm & 0xff));
1237
1238         if (!(imm & 0xff000000)) {
1239                 imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1240                 imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1241         }
1242         else if (imm & 0xc0000000) {
1243                 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1244                 imm <<= 8;
1245                 rol += 4;
1246
1247                 if (!(imm & 0xff000000)) {
1248                         imm <<= 8;
1249                         rol += 4;
1250                 }
1251
1252                 if (!(imm & 0xf0000000)) {
1253                         imm <<= 4;
1254                         rol += 2;
1255                 }
1256
1257                 if (!(imm & 0xc0000000)) {
1258                         imm <<= 2;
1259                         rol += 1;
1260                 }
1261
1262                 if (!(imm & 0x00ffffff))
1263                         imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1264                 else
1265                         return 0;
1266         }
1267         else {
1268                 if (!(imm & 0xf0000000)) {
1269                         imm <<= 4;
1270                         rol += 2;
1271                 }
1272
1273                 if (!(imm & 0xc0000000)) {
1274                         imm <<= 2;
1275                         rol += 1;
1276                 }
1277
1278                 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1279                 imm <<= 8;
1280                 rol += 4;
1281
1282                 if (!(imm & 0xf0000000)) {
1283                         imm <<= 4;
1284                         rol += 2;
1285                 }
1286
1287                 if (!(imm & 0xc0000000)) {
1288                         imm <<= 2;
1289                         rol += 1;
1290                 }
1291
1292                 if (!(imm & 0x00ffffff))
1293                         imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1294                 else
1295                         return 0;
1296         }
1297
1298         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1299         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1300         return 1;
1301 }
1302 #endif
1303
1304 static int load_immediate(struct sljit_compiler *compiler, int reg, sljit_uw imm)
1305 {
1306         sljit_uw tmp;
1307
1308 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1309         if (!(imm & ~0xffff))
1310                 return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1311 #endif
1312
1313         /* Create imm by 1 inst. */
1314         tmp = get_immediate(imm);
1315         if (tmp) {
1316                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1317                 return SLJIT_SUCCESS;
1318         }
1319
1320         tmp = get_immediate(~imm);
1321         if (tmp) {
1322                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1323                 return SLJIT_SUCCESS;
1324         }
1325
1326 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1327         /* Create imm by 2 inst. */
1328         FAIL_IF(generate_int(compiler, reg, imm, 1));
1329         FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1330
1331         /* Load integer. */
1332         return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1333 #else
1334         return emit_imm(compiler, reg, imm);
1335 #endif
1336 }
1337
1338 /* Can perform an operation using at most 1 instruction. */
1339 static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw)
1340 {
1341         sljit_uw imm;
1342
1343         if (arg & SLJIT_IMM) {
1344                 imm = get_immediate(argw);
1345                 if (imm) {
1346                         if (inp_flags & ARG_TEST)
1347                                 return 1;
1348                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1349                         return -1;
1350                 }
1351                 imm = get_immediate(~argw);
1352                 if (imm) {
1353                         if (inp_flags & ARG_TEST)
1354                                 return 1;
1355                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1356                         return -1;
1357                 }
1358                 return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1359         }
1360
1361         SLJIT_ASSERT(arg & SLJIT_MEM);
1362
1363         /* Fast loads/stores. */
1364         if (arg & 0xf) {
1365                 if (!(arg & 0xf0)) {
1366                         if (IS_TYPE1_TRANSFER(inp_flags)) {
1367                                 if (argw >= 0 && argw <= 0xfff) {
1368                                         if (inp_flags & ARG_TEST)
1369                                                 return 1;
1370                                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw));
1371                                         return -1;
1372                                 }
1373                                 if (argw < 0 && argw >= -0xfff) {
1374                                         if (inp_flags & ARG_TEST)
1375                                                 return 1;
1376                                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw));
1377                                         return -1;
1378                                 }
1379                         }
1380                         else {
1381                                 if (argw >= 0 && argw <= 0xff) {
1382                                         if (inp_flags & ARG_TEST)
1383                                                 return 1;
1384                                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1385                                         return -1;
1386                                 }
1387                                 if (argw < 0 && argw >= -0xff) {
1388                                         if (inp_flags & ARG_TEST)
1389                                                 return 1;
1390                                         argw = -argw;
1391                                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw)));
1392                                         return -1;
1393                                 }
1394                         }
1395                 }
1396                 else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) {
1397                         if (inp_flags & ARG_TEST)
1398                                 return 1;
1399                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf,
1400                                 RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1401                         return -1;
1402                 }
1403         }
1404
1405         return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
1406 }
1407
1408 /* See getput_arg below.
1409    Note: can_cache is called only for binary operators. Those
1410    operators always uses word arguments without write back. */
1411 static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1412 {
1413         /* Immediate caching is not supported as it would be an operation on constant arguments. */
1414         if (arg & SLJIT_IMM)
1415                 return 0;
1416
1417         /* Always a simple operation. */
1418         if (arg & 0xf0)
1419                 return 0;
1420
1421         if (!(arg & 0xf)) {
1422                 /* Immediate access. */
1423                 if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1424                         return 1;
1425                 return 0;
1426         }
1427
1428         if (argw <= 0xfffff && argw >= -0xfffff)
1429                 return 0;
1430
1431         if (argw == next_argw && (next_arg & SLJIT_MEM))
1432                 return 1;
1433
1434         if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1435                 return 1;
1436
1437         return 0;
1438 }
1439
1440 #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1441         if (max_delta & 0xf00) \
1442                 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1443         else \
1444                 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1445
1446 #define TEST_WRITE_BACK() \
1447         if (inp_flags & WRITE_BACK) { \
1448                 tmp_r = arg & 0xf; \
1449                 if (reg == tmp_r) { \
1450                         /* This can only happen for stores */ \
1451                         /* since ldr reg, [reg, ...]! has no meaning */ \
1452                         SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1453                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1454                         reg = TMP_REG3; \
1455                 } \
1456         }
1457
1458 /* Emit the necessary instructions. See can_cache above. */
1459 static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
1460 {
1461         int tmp_r;
1462         sljit_w max_delta;
1463         sljit_w sign;
1464
1465         if (arg & SLJIT_IMM) {
1466                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1467                 return load_immediate(compiler, reg, argw);
1468         }
1469
1470         SLJIT_ASSERT(arg & SLJIT_MEM);
1471
1472         tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1473         max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1474
1475         if ((arg & 0xf) == SLJIT_UNUSED) {
1476                 /* Write back is not used. */
1477                 if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) {
1478                         if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1479                                 sign = 1;
1480                                 argw = argw - compiler->cache_argw;
1481                         }
1482                         else {
1483                                 sign = 0;
1484                                 argw = compiler->cache_argw - argw;
1485                         }
1486
1487                         if (max_delta & 0xf00) {
1488                                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw));
1489                         }
1490                         else {
1491                                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw)));
1492                         }
1493                         return SLJIT_SUCCESS;
1494                 }
1495
1496                 /* With write back, we can create some sophisticated loads, but
1497                    it is hard to decide whether we should convert downward (0s) or upward (1s). */
1498                 if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1499                         SLJIT_ASSERT(inp_flags & LOAD_DATA);
1500
1501                         compiler->cache_arg = SLJIT_IMM;
1502                         compiler->cache_argw = argw;
1503                         tmp_r = TMP_REG3;
1504                 }
1505
1506                 FAIL_IF(load_immediate(compiler, tmp_r, argw));
1507                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1508                 return SLJIT_SUCCESS;
1509         }
1510
1511         /* Extended imm addressing for [reg+imm] format. */
1512         sign = (max_delta << 8) | 0xff;
1513         if (!(arg & 0xf0) && argw <= sign && argw >= -sign) {
1514                 TEST_WRITE_BACK();
1515                 if (argw >= 0) {
1516                         sign = 1;
1517                 }
1518                 else {
1519                         sign = 0;
1520                         argw = -argw;
1521                 }
1522
1523                 /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */
1524                 if (max_delta & 0xf00)
1525                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00));
1526                 else
1527                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00));
1528
1529                 argw &= max_delta;
1530                 GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw);
1531                 return SLJIT_SUCCESS;
1532         }
1533
1534         if (arg & 0xf0) {
1535                 SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1536                 if (inp_flags & WRITE_BACK)
1537                         tmp_r = arg & 0xf;
1538                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
1539                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1540                 return SLJIT_SUCCESS;
1541         }
1542
1543         if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) {
1544                 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1545                 argw = argw - compiler->cache_argw;
1546                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw);
1547                 return SLJIT_SUCCESS;
1548         }
1549
1550         if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) {
1551                 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1552                 argw = compiler->cache_argw - argw;
1553                 GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw);
1554                 return SLJIT_SUCCESS;
1555         }
1556
1557         if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1558                 TEST_WRITE_BACK();
1559                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1560                 return SLJIT_SUCCESS;
1561         }
1562
1563         if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1564                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1565                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1566
1567                 compiler->cache_arg = SLJIT_IMM;
1568                 compiler->cache_argw = argw;
1569
1570                 TEST_WRITE_BACK();
1571                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1572                 return SLJIT_SUCCESS;
1573         }
1574
1575         if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) {
1576                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1577                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1578                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf]));
1579
1580                 compiler->cache_arg = arg;
1581                 compiler->cache_argw = argw;
1582
1583                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1584                 return SLJIT_SUCCESS;
1585         }
1586
1587         if ((arg & 0xf) == tmp_r) {
1588                 compiler->cache_arg = SLJIT_IMM;
1589                 compiler->cache_argw = argw;
1590                 tmp_r = TMP_REG3;
1591         }
1592
1593         FAIL_IF(load_immediate(compiler, tmp_r, argw));
1594         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1595         return SLJIT_SUCCESS;
1596 }
1597
1598 static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags,
1599         int dst, sljit_w dstw,
1600         int src1, sljit_w src1w,
1601         int src2, sljit_w src2w)
1602 {
1603         /* arg1 goes to TMP_REG1 or src reg
1604            arg2 goes to TMP_REG2, imm or src reg
1605            TMP_REG3 can be used for caching
1606            result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1607
1608         /* We prefers register and simple consts. */
1609         int dst_r;
1610         int src1_r;
1611         int src2_r = 0;
1612         int sugg_src2_r = TMP_REG2;
1613         int flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1614
1615         compiler->cache_arg = 0;
1616         compiler->cache_argw = 0;
1617
1618         /* Destination check. */
1619         if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) {
1620                 dst_r = dst;
1621                 flags |= REG_DEST;
1622                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1623                         sugg_src2_r = dst_r;
1624         }
1625         else if (dst == SLJIT_UNUSED) {
1626                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
1627                         return SLJIT_SUCCESS;
1628                 dst_r = TMP_REG2;
1629         }
1630         else {
1631                 SLJIT_ASSERT(dst & SLJIT_MEM);
1632                 if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1633                         flags |= FAST_DEST;
1634                         dst_r = TMP_REG2;
1635                 }
1636                 else {
1637                         flags |= SLOW_DEST;
1638                         dst_r = 0;
1639                 }
1640         }
1641
1642         /* Source 1. */
1643         if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3)
1644                 src1_r = src1;
1645         else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1646                 flags |= ARGS_SWAPPED;
1647                 src1_r = src2;
1648                 src2 = src1;
1649                 src2w = src1w;
1650         }
1651         else {
1652                 if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1653                         /* The second check will generate a hit. */
1654                         src2_r = get_immediate(src1w);
1655                         if (src2_r) {
1656                                 flags |= ARGS_SWAPPED;
1657                                 src1 = src2;
1658                                 src1w = src2w;
1659                         }
1660                         if (inp_flags & ALLOW_INV_IMM) {
1661                                 src2_r = get_immediate(~src1w);
1662                                 if (src2_r) {
1663                                         flags |= ARGS_SWAPPED | INV_IMM;
1664                                         src1 = src2;
1665                                         src1w = src2w;
1666                                 }
1667                         }
1668                 }
1669
1670                 src1_r = 0;
1671                 if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1672                         FAIL_IF(compiler->error);
1673                         src1_r = TMP_REG1;
1674                 }
1675         }
1676
1677         /* Source 2. */
1678         if (src2_r == 0) {
1679                 if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) {
1680                         src2_r = src2;
1681                         flags |= REG_SOURCE;
1682                         if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1683                                 dst_r = src2_r;
1684                 }
1685                 else do { /* do { } while(0) is used because of breaks. */
1686                         if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1687                                 src2_r = get_immediate(src2w);
1688                                 if (src2_r)
1689                                         break;
1690                                 if (inp_flags & ALLOW_INV_IMM) {
1691                                         src2_r = get_immediate(~src2w);
1692                                         if (src2_r) {
1693                                                 flags |= INV_IMM;
1694                                                 break;
1695                                         }
1696                                 }
1697                         }
1698
1699                         /* src2_r is 0. */
1700                         if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1701                                 FAIL_IF(compiler->error);
1702                                 src2_r = sugg_src2_r;
1703                         }
1704                 } while (0);
1705         }
1706
1707         /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1708            If they are zero, they must not be registers. */
1709         if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1710                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1711                         SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1712                         flags |= ARGS_SWAPPED;
1713                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1714                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1715                 }
1716                 else {
1717                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1718                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1719                 }
1720                 src1_r = TMP_REG1;
1721                 src2_r = TMP_REG2;
1722         }
1723         else if (src1_r == 0 && src2_r == 0) {
1724                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1725                 src1_r = TMP_REG1;
1726         }
1727         else if (src1_r == 0 && dst_r == 0) {
1728                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1729                 src1_r = TMP_REG1;
1730         }
1731         else if (src2_r == 0 && dst_r == 0) {
1732                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1733                 src2_r = sugg_src2_r;
1734         }
1735
1736         if (dst_r == 0)
1737                 dst_r = TMP_REG2;
1738
1739         if (src1_r == 0) {
1740                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1741                 src1_r = TMP_REG1;
1742         }
1743
1744         if (src2_r == 0) {
1745                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1746                 src2_r = sugg_src2_r;
1747         }
1748
1749         FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1750
1751         if (flags & (FAST_DEST | SLOW_DEST)) {
1752                 if (flags & FAST_DEST)
1753                         FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1754                 else
1755                         FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1756         }
1757         return SLJIT_SUCCESS;
1758 }
1759
1760 #ifdef __cplusplus
1761 extern "C" {
1762 #endif
1763
1764 #if defined(__GNUC__)
1765 extern unsigned int __aeabi_uidivmod(unsigned numerator, unsigned denominator);
1766 extern unsigned int __aeabi_idivmod(unsigned numerator, unsigned denominator);
1767 #else
1768 #error "Software divmod functions are needed"
1769 #endif
1770
1771 #ifdef __cplusplus
1772 }
1773 #endif
1774
1775 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
1776 {
1777         CHECK_ERROR();
1778         check_sljit_emit_op0(compiler, op);
1779
1780         op = GET_OPCODE(op);
1781         switch (op) {
1782         case SLJIT_BREAKPOINT:
1783                 EMIT_INSTRUCTION(BKPT);
1784                 break;
1785         case SLJIT_NOP:
1786                 EMIT_INSTRUCTION(NOP);
1787                 break;
1788         case SLJIT_UMUL:
1789         case SLJIT_SMUL:
1790 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1791                 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1792                         | (reg_map[SLJIT_TEMPORARY_REG2] << 16)
1793                         | (reg_map[SLJIT_TEMPORARY_REG1] << 12)
1794                         | (reg_map[SLJIT_TEMPORARY_REG1] << 8)
1795                         | reg_map[SLJIT_TEMPORARY_REG2]);
1796 #else
1797                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2)));
1798                 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1799                         | (reg_map[SLJIT_TEMPORARY_REG2] << 16)
1800                         | (reg_map[SLJIT_TEMPORARY_REG1] << 12)
1801                         | (reg_map[SLJIT_TEMPORARY_REG1] << 8)
1802                         | reg_map[TMP_REG1]);
1803 #endif
1804         case SLJIT_UDIV:
1805         case SLJIT_SDIV:
1806                 if (compiler->temporaries >= 3)
1807                         EMIT_INSTRUCTION(0xe52d2008 /* str r2, [sp, #-8]! */);
1808 #if defined(__GNUC__)
1809                 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1810                         (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1811 #else
1812 #error "Software divmod functions are needed"
1813 #endif
1814                 if (compiler->temporaries >= 3)
1815                         return push_inst(compiler, 0xe49d2008 /* ldr r2, [sp], #8 */);
1816                 return SLJIT_SUCCESS;
1817         }
1818
1819         return SLJIT_SUCCESS;
1820 }
1821
1822 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
1823         int dst, sljit_w dstw,
1824         int src, sljit_w srcw)
1825 {
1826         CHECK_ERROR();
1827         check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1828
1829         switch (GET_OPCODE(op)) {
1830         case SLJIT_MOV:
1831         case SLJIT_MOV_UI:
1832         case SLJIT_MOV_SI:
1833                 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1834
1835         case SLJIT_MOV_UB:
1836                 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1837
1838         case SLJIT_MOV_SB:
1839                 return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1840
1841         case SLJIT_MOV_UH:
1842                 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1843
1844         case SLJIT_MOV_SH:
1845                 return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1846
1847         case SLJIT_MOVU:
1848         case SLJIT_MOVU_UI:
1849         case SLJIT_MOVU_SI:
1850                 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1851
1852         case SLJIT_MOVU_UB:
1853                 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw);
1854
1855         case SLJIT_MOVU_SB:
1856                 return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw);
1857
1858         case SLJIT_MOVU_UH:
1859                 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw);
1860
1861         case SLJIT_MOVU_SH:
1862                 return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw);
1863
1864         case SLJIT_NOT:
1865                 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1866
1867         case SLJIT_NEG:
1868 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1869                 compiler->skip_checks = 1;
1870 #endif
1871                 return sljit_emit_op2(compiler, SLJIT_SUB | GET_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1872
1873         case SLJIT_CLZ:
1874                 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1875         }
1876
1877         return SLJIT_SUCCESS;
1878 }
1879
1880 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
1881         int dst, sljit_w dstw,
1882         int src1, sljit_w src1w,
1883         int src2, sljit_w src2w)
1884 {
1885         CHECK_ERROR();
1886         check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1887
1888         switch (GET_OPCODE(op)) {
1889         case SLJIT_ADD:
1890         case SLJIT_ADDC:
1891         case SLJIT_SUB:
1892         case SLJIT_SUBC:
1893         case SLJIT_OR:
1894         case SLJIT_XOR:
1895                 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1896
1897         case SLJIT_MUL:
1898                 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1899
1900         case SLJIT_AND:
1901                 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1902
1903         case SLJIT_SHL:
1904         case SLJIT_LSHR:
1905         case SLJIT_ASHR:
1906                 if (src2 & SLJIT_IMM) {
1907                         compiler->shift_imm = src2w & 0x1f;
1908                         return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1909                 }
1910                 else {
1911                         compiler->shift_imm = 0x20;
1912                         return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1913                 }
1914         }
1915
1916         return SLJIT_SUCCESS;
1917 }
1918
1919 SLJIT_API_FUNC_ATTRIBUTE int sljit_get_register_index(int reg)
1920 {
1921         check_sljit_get_register_index(reg);
1922         return reg_map[reg];
1923 }
1924
1925 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op_custom(struct sljit_compiler *compiler,
1926         void *instruction, int size)
1927 {
1928         CHECK_ERROR();
1929         check_sljit_emit_op_custom(compiler, instruction, size);
1930         SLJIT_ASSERT(size == 4);
1931
1932         return push_inst(compiler, *(sljit_uw*)instruction);
1933 }
1934
1935 /* --------------------------------------------------------------------- */
1936 /*  Floating point operators                                             */
1937 /* --------------------------------------------------------------------- */
1938
1939 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1940
1941 /* 0 - no fpu
1942    1 - vfp */
1943 static int arm_fpu_type = -1;
1944
1945 static void init_compiler()
1946 {
1947         if (arm_fpu_type != -1)
1948                 return;
1949
1950         /* TODO: Only the OS can help to determine the correct fpu type. */
1951         arm_fpu_type = 1;
1952 }
1953
1954 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1955 {
1956         if (arm_fpu_type == -1)
1957                 init_compiler();
1958         return arm_fpu_type;
1959 }
1960
1961 #else
1962
1963 #define arm_fpu_type 1
1964
1965 SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
1966 {
1967         /* Always available. */
1968         return 1;
1969 }
1970
1971 #endif
1972
1973 #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \
1974         (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs))
1975 #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \
1976         ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16))
1977
1978 static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw)
1979 {
1980         SLJIT_ASSERT(arg & SLJIT_MEM);
1981
1982         /* Fast loads and stores. */
1983         if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) {
1984                 if (argw >= 0 && argw <= 0x3ff) {
1985                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2));
1986                         return SLJIT_SUCCESS;
1987                 }
1988                 if (argw < 0 && argw >= -0x3ff) {
1989                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2));
1990                         return SLJIT_SUCCESS;
1991                 }
1992                 if (argw >= 0 && argw <= 0x3ffff) {
1993                         SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
1994                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
1995                         argw &= 0x3ff;
1996                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2));
1997                         return SLJIT_SUCCESS;
1998                 }
1999                 if (argw < 0 && argw >= -0x3ffff) {
2000                         argw = -argw;
2001                         SLJIT_ASSERT(get_immediate(argw & 0x3fc00));
2002                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00)));
2003                         argw &= 0x3ff;
2004                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2));
2005                         return SLJIT_SUCCESS;
2006                 }
2007         }
2008
2009         if (arg & 0xf0) {
2010                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7)));
2011                 EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0));
2012                 return SLJIT_SUCCESS;
2013         }
2014
2015         if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) {
2016                 if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) {
2017                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2));
2018                         return SLJIT_SUCCESS;
2019                 }
2020                 if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) {
2021                         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2));
2022                         return SLJIT_SUCCESS;
2023                 }
2024         }
2025
2026         compiler->cache_arg = arg;
2027         compiler->cache_argw = argw;
2028         if (arg & 0xf) {
2029                 FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
2030                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1]));
2031         }
2032         else
2033                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
2034
2035         EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0));
2036         return SLJIT_SUCCESS;
2037 }
2038
2039 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
2040         int dst, sljit_w dstw,
2041         int src, sljit_w srcw)
2042 {
2043         int dst_freg;
2044
2045         CHECK_ERROR();
2046         check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
2047
2048         compiler->cache_arg = 0;
2049         compiler->cache_argw = 0;
2050
2051         if (GET_OPCODE(op) == SLJIT_FCMP) {
2052                 if (dst > SLJIT_FLOAT_REG4) {
2053                         FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw));
2054                         dst = TMP_FREG1;
2055                 }
2056                 if (src > SLJIT_FLOAT_REG4) {
2057                         FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw));
2058                         src = TMP_FREG2;
2059                 }
2060                 EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src);
2061                 EMIT_INSTRUCTION(VMRS);
2062                 return SLJIT_SUCCESS;
2063         }
2064
2065         dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2066
2067         if (src > SLJIT_FLOAT_REG4) {
2068                 FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw));
2069                 src = dst_freg;
2070         }
2071
2072         switch (op) {
2073                 case SLJIT_FMOV:
2074                         if (src != dst_freg && dst_freg != TMP_FREG1)
2075                                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0));
2076                         break;
2077                 case SLJIT_FNEG:
2078                         EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0));
2079                         break;
2080                 case SLJIT_FABS:
2081                         EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0));
2082                         break;
2083         }
2084
2085         if (dst_freg == TMP_FREG1)
2086                 FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw));
2087
2088         return SLJIT_SUCCESS;
2089 }
2090
2091 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
2092         int dst, sljit_w dstw,
2093         int src1, sljit_w src1w,
2094         int src2, sljit_w src2w)
2095 {
2096         int dst_freg;
2097
2098         CHECK_ERROR();
2099         check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2100
2101         compiler->cache_arg = 0;
2102         compiler->cache_argw = 0;
2103
2104         dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst;
2105
2106         if (src2 > SLJIT_FLOAT_REG4) {
2107                 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w));
2108                 src2 = TMP_FREG2;
2109         }
2110
2111         if (src1 > SLJIT_FLOAT_REG4) {
2112                 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w));
2113                 src1 = TMP_FREG1;
2114         }
2115
2116         switch (op) {
2117         case SLJIT_FADD:
2118                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1));
2119                 break;
2120
2121         case SLJIT_FSUB:
2122                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1));
2123                 break;
2124
2125         case SLJIT_FMUL:
2126                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1));
2127                 break;
2128
2129         case SLJIT_FDIV:
2130                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1));
2131                 break;
2132         }
2133
2134         if (dst_freg == TMP_FREG1)
2135                 FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw));
2136
2137         return SLJIT_SUCCESS;
2138 }
2139
2140 /* --------------------------------------------------------------------- */
2141 /*  Other instructions                                                   */
2142 /* --------------------------------------------------------------------- */
2143
2144 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int saveds, int local_size)
2145 {
2146         int size;
2147
2148         CHECK_ERROR();
2149         check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, saveds, local_size);
2150
2151         compiler->temporaries = temporaries;
2152         compiler->saveds = saveds;
2153
2154         size = (1 + saveds) * sizeof(sljit_uw);
2155         if (temporaries >= 4)
2156                 size += (temporaries - 3) * sizeof(sljit_uw);
2157         local_size += size;
2158         local_size = (local_size + 7) & ~7;
2159         local_size -= size;
2160         compiler->local_size = local_size;
2161
2162         if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
2163                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2164         else if (dst & SLJIT_MEM) {
2165                 if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
2166                         return compiler->error;
2167                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
2168                 compiler->cache_arg = 0;
2169                 compiler->cache_argw = 0;
2170                 return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
2171         }
2172
2173         return SLJIT_SUCCESS;
2174 }
2175
2176 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
2177 {
2178         CHECK_ERROR();
2179         check_sljit_emit_fast_return(compiler, src, srcw);
2180
2181         if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2182                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2183         else if (src & SLJIT_MEM) {
2184                 if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2185                         FAIL_IF(compiler->error);
2186                 else {
2187                         compiler->cache_arg = 0;
2188                         compiler->cache_argw = 0;
2189                         FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2190                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2191                 }
2192         }
2193         else if (src & SLJIT_IMM)
2194                 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2195         return push_inst(compiler, BLX | RM(TMP_REG3));
2196 }
2197
2198 /* --------------------------------------------------------------------- */
2199 /*  Conditional instructions                                             */
2200 /* --------------------------------------------------------------------- */
2201
2202 static sljit_uw get_cc(int type)
2203 {
2204         switch (type) {
2205         case SLJIT_C_EQUAL:
2206         case SLJIT_C_MUL_NOT_OVERFLOW:
2207         case SLJIT_C_FLOAT_EQUAL:
2208                 return 0x00000000;
2209
2210         case SLJIT_C_NOT_EQUAL:
2211         case SLJIT_C_MUL_OVERFLOW:
2212         case SLJIT_C_FLOAT_NOT_EQUAL:
2213                 return 0x10000000;
2214
2215         case SLJIT_C_LESS:
2216         case SLJIT_C_FLOAT_LESS:
2217                 return 0x30000000;
2218
2219         case SLJIT_C_GREATER_EQUAL:
2220         case SLJIT_C_FLOAT_GREATER_EQUAL:
2221                 return 0x20000000;
2222
2223         case SLJIT_C_GREATER:
2224         case SLJIT_C_FLOAT_GREATER:
2225                 return 0x80000000;
2226
2227         case SLJIT_C_LESS_EQUAL:
2228         case SLJIT_C_FLOAT_LESS_EQUAL:
2229                 return 0x90000000;
2230
2231         case SLJIT_C_SIG_LESS:
2232                 return 0xb0000000;
2233
2234         case SLJIT_C_SIG_GREATER_EQUAL:
2235                 return 0xa0000000;
2236
2237         case SLJIT_C_SIG_GREATER:
2238                 return 0xc0000000;
2239
2240         case SLJIT_C_SIG_LESS_EQUAL:
2241                 return 0xd0000000;
2242
2243         case SLJIT_C_OVERFLOW:
2244         case SLJIT_C_FLOAT_NAN:
2245                 return 0x60000000;
2246
2247         case SLJIT_C_NOT_OVERFLOW:
2248         case SLJIT_C_FLOAT_NOT_NAN:
2249                 return 0x70000000;
2250
2251         default: /* SLJIT_JUMP */
2252                 return 0xe0000000;
2253         }
2254 }
2255
2256 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2257 {
2258         struct sljit_label *label;
2259
2260         CHECK_ERROR_PTR();
2261         check_sljit_emit_label(compiler);
2262
2263         if (compiler->last_label && compiler->last_label->size == compiler->size)
2264                 return compiler->last_label;
2265
2266         label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2267         PTR_FAIL_IF(!label);
2268         set_label(label, compiler);
2269         return label;
2270 }
2271
2272 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
2273 {
2274         struct sljit_jump *jump;
2275
2276         CHECK_ERROR_PTR();
2277         check_sljit_emit_jump(compiler, type);
2278
2279         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2280         PTR_FAIL_IF(!jump);
2281         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2282         type &= 0xff;
2283
2284         /* In ARM, we don't need to touch the arguments. */
2285 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2286         if (type >= SLJIT_FAST_CALL)
2287                 PTR_FAIL_IF(prepare_blx(compiler));
2288         PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2289                 type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2290
2291         if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2292                 jump->addr = compiler->size;
2293                 compiler->patches++;
2294         }
2295
2296         if (type >= SLJIT_FAST_CALL) {
2297                 jump->flags |= IS_BL;
2298                 PTR_FAIL_IF(emit_blx(compiler));
2299         }
2300
2301         if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2302                 jump->addr = compiler->size;
2303 #else
2304         if (type >= SLJIT_FAST_CALL)
2305                 jump->flags |= IS_BL;
2306         PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2307         PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2308         jump->addr = compiler->size;
2309 #endif
2310         return jump;
2311 }
2312
2313 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
2314 {
2315         struct sljit_jump *jump;
2316
2317         CHECK_ERROR();
2318         check_sljit_emit_ijump(compiler, type, src, srcw);
2319
2320         /* In ARM, we don't need to touch the arguments. */
2321         if (src & SLJIT_IMM) {
2322                 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2323                 FAIL_IF(!jump);
2324                 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2325                 jump->u.target = srcw;
2326
2327 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2328                 if (type >= SLJIT_FAST_CALL)
2329                         FAIL_IF(prepare_blx(compiler));
2330                 FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
2331                 if (type >= SLJIT_FAST_CALL)
2332                         FAIL_IF(emit_blx(compiler));
2333 #else
2334                 FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2335                 FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2336 #endif
2337                 jump->addr = compiler->size;
2338         }
2339         else {
2340                 if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
2341                         return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2342
2343                 SLJIT_ASSERT(src & SLJIT_MEM);
2344                 FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
2345                 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2346         }
2347
2348         return SLJIT_SUCCESS;
2349 }
2350
2351 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
2352 {
2353         int reg;
2354         sljit_uw cc;
2355
2356         CHECK_ERROR();
2357         check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
2358
2359         if (dst == SLJIT_UNUSED)
2360                 return SLJIT_SUCCESS;
2361
2362         cc = get_cc(type);
2363         if (GET_OPCODE(op) == SLJIT_OR) {
2364                 if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
2365                         EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
2366                         if (op & SLJIT_SET_E)
2367                                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst)));
2368                         return SLJIT_SUCCESS;
2369                 }
2370
2371                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0));
2372                 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2373 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
2374                 compiler->skip_checks = 1;
2375 #endif
2376                 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw);
2377         }
2378
2379         reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2380
2381         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0));
2382         EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2383
2384         if (reg == TMP_REG2)
2385                 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0);
2386         return SLJIT_SUCCESS;
2387 }
2388
2389 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
2390 {
2391         struct sljit_const *const_;
2392         int reg;
2393
2394         CHECK_ERROR_PTR();
2395         check_sljit_emit_const(compiler, dst, dstw, init_value);
2396
2397         const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2398         PTR_FAIL_IF(!const_);
2399
2400         reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2;
2401
2402 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2403         PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2404         compiler->patches++;
2405 #else
2406         PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2407 #endif
2408         set_const(const_, compiler);
2409
2410         if (reg == TMP_REG2 && dst != SLJIT_UNUSED)
2411                 if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0))
2412                         return NULL;
2413         return const_;
2414 }
2415
2416 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2417 {
2418         inline_set_jump_addr(addr, new_addr, 1);
2419 }
2420
2421 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
2422 {
2423         inline_set_const(addr, new_constant, 1);
2424 }