sljit/sljitNativeARM_32.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(void)
  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       (0)
  45 #define TMP_FREG2       (SLJIT_FLOAT_REG6 + 1)
  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) / (sljit_si)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_F32        0xeeb00ac0
 103 #define VADD_F32        0xee300a00
 104 #define VCMP_F32        0xeeb40a40
 105 #define VDIV_F32        0xee800a00
 106 #define VMOV_F32        0xeeb00a40
 107 #define VMRS            0xeef1fa10
 108 #define VMUL_F32        0xee200a00
 109 #define VNEG_F32        0xeeb10a40
 110 #define VSTR_F32        0xed000a00
 111 #define VSUB_F32        0xee300a40
 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 sljit_si 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         sljit_si 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 sljit_si 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 sljit_si 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 sljit_si 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 sljit_si 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 sljit_si 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 ((sljit_si)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         sljit_si index;
 311         sljit_si value;
 312 };
 313
 314 static SLJIT_INLINE sljit_si 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         sljit_si 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 = (sljit_si)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 = (sljit_si)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 sljit_si 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 sljit_si emit_imm(struct sljit_compiler *compiler, sljit_si reg, sljit_sw 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 sljit_si detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code)
 387 {
 388         sljit_sw 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_sw)jump->u.target - (sljit_sw)(code_ptr + 2));
 399         else {
 400                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 401                 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2));
 402         }
 403
 404         /* Branch to Thumb code has not been optimized yet. */
 405         if (diff & 0x3)
 406                 return 0;
 407
 408         if (jump->flags & IS_BL) {
 409                 if (diff <= 0x01ffffff && diff >= -0x02000000) {
 410                         *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
 411                         jump->flags |= PATCH_B;
 412                         return 1;
 413                 }
 414         }
 415         else {
 416                 if (diff <= 0x01ffffff && diff >= -0x02000000) {
 417                         *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
 418                         jump->flags |= PATCH_B;
 419                 }
 420         }
 421 #else
 422         if (jump->flags & JUMP_ADDR)
 423                 diff = ((sljit_sw)jump->u.target - (sljit_sw)code_ptr);
 424         else {
 425                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 426                 diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)code_ptr);
 427         }
 428
 429         /* Branch to Thumb code has not been optimized yet. */
 430         if (diff & 0x3)
 431                 return 0;
 432
 433         if (diff <= 0x01ffffff && diff >= -0x02000000) {
 434                 code_ptr -= 2;
 435                 *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK);
 436                 jump->flags |= PATCH_B;
 437                 return 1;
 438         }
 439 #endif
 440         return 0;
 441 }
 442
 443 static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, sljit_si flush)
 444 {
 445 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 446         sljit_uw *ptr = (sljit_uw*)addr;
 447         sljit_uw *inst = (sljit_uw*)ptr[0];
 448         sljit_uw mov_pc = ptr[1];
 449         sljit_si bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
 450         sljit_sw diff = (sljit_sw)(((sljit_sw)new_addr - (sljit_sw)(inst + 2)) >> 2);
 451
 452         if (diff <= 0x7fffff && diff >= -0x800000) {
 453                 /* Turn to branch. */
 454                 if (!bl) {
 455                         inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
 456                         if (flush) {
 457                                 SLJIT_CACHE_FLUSH(inst, inst + 1);
 458                         }
 459                 } else {
 460                         inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
 461                         inst[1] = NOP;
 462                         if (flush) {
 463                                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 464                         }
 465                 }
 466         } else {
 467                 /* Get the position of the constant. */
 468                 if (mov_pc & (1 << 23))
 469                         ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
 470                 else
 471                         ptr = inst + 1;
 472
 473                 if (*inst != mov_pc) {
 474                         inst[0] = mov_pc;
 475                         if (!bl) {
 476                                 if (flush) {
 477                                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 478                                 }
 479                         } else {
 480                                 inst[1] = BLX | RM(TMP_REG1);
 481                                 if (flush) {
 482                                         SLJIT_CACHE_FLUSH(inst, inst + 2);
 483                                 }
 484                         }
 485                 }
 486                 *ptr = new_addr;
 487         }
 488 #else
 489         sljit_uw *inst = (sljit_uw*)addr;
 490         SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 491         inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
 492         inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
 493         if (flush) {
 494                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 495         }
 496 #endif
 497 }
 498
 499 static sljit_uw get_imm(sljit_uw imm);
 500
 501 static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_sw new_constant, sljit_si flush)
 502 {
 503 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 504         sljit_uw *ptr = (sljit_uw*)addr;
 505         sljit_uw *inst = (sljit_uw*)ptr[0];
 506         sljit_uw ldr_literal = ptr[1];
 507         sljit_uw src2;
 508
 509         src2 = get_imm(new_constant);
 510         if (src2) {
 511                 *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
 512                 if (flush) {
 513                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 514                 }
 515                 return;
 516         }
 517
 518         src2 = get_imm(~new_constant);
 519         if (src2) {
 520                 *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
 521                 if (flush) {
 522                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 523                 }
 524                 return;
 525         }
 526
 527         if (ldr_literal & (1 << 23))
 528                 ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
 529         else
 530                 ptr = inst + 1;
 531
 532         if (*inst != ldr_literal) {
 533                 *inst = ldr_literal;
 534                 if (flush) {
 535                         SLJIT_CACHE_FLUSH(inst, inst + 1);
 536                 }
 537         }
 538         *ptr = new_constant;
 539 #else
 540         sljit_uw *inst = (sljit_uw*)addr;
 541         SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 542         inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
 543         inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
 544         if (flush) {
 545                 SLJIT_CACHE_FLUSH(inst, inst + 2);
 546         }
 547 #endif
 548 }
 549
 550 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
 551 {
 552         struct sljit_memory_fragment *buf;
 553         sljit_uw *code;
 554         sljit_uw *code_ptr;
 555         sljit_uw *buf_ptr;
 556         sljit_uw *buf_end;
 557         sljit_uw size;
 558         sljit_uw word_count;
 559 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 560         sljit_uw cpool_size;
 561         sljit_uw cpool_skip_alignment;
 562         sljit_uw cpool_current_index;
 563         sljit_uw *cpool_start_address;
 564         sljit_uw *last_pc_patch;
 565         struct future_patch *first_patch;
 566 #endif
 567
 568         struct sljit_label *label;
 569         struct sljit_jump *jump;
 570         struct sljit_const *const_;
 571
 572         CHECK_ERROR_PTR();
 573         check_sljit_generate_code(compiler);
 574         reverse_buf(compiler);
 575
 576         /* Second code generation pass. */
 577 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 578         size = compiler->size + (compiler->patches << 1);
 579         if (compiler->cpool_fill > 0)
 580                 size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
 581 #else
 582         size = compiler->size;
 583 #endif
 584         code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw));
 585         PTR_FAIL_WITH_EXEC_IF(code);
 586         buf = compiler->buf;
 587
 588 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 589         cpool_size = 0;
 590         cpool_skip_alignment = 0;
 591         cpool_current_index = 0;
 592         cpool_start_address = NULL;
 593         first_patch = NULL;
 594         last_pc_patch = code;
 595 #endif
 596
 597         code_ptr = code;
 598         word_count = 0;
 599
 600         label = compiler->labels;
 601         jump = compiler->jumps;
 602         const_ = compiler->consts;
 603
 604         if (label && label->size == 0) {
 605                 label->addr = (sljit_uw)code;
 606                 label->size = 0;
 607                 label = label->next;
 608         }
 609
 610         do {
 611                 buf_ptr = (sljit_uw*)buf->memory;
 612                 buf_end = buf_ptr + (buf->used_size >> 2);
 613                 do {
 614                         word_count++;
 615 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 616                         if (cpool_size > 0) {
 617                                 if (cpool_skip_alignment > 0) {
 618                                         buf_ptr++;
 619                                         cpool_skip_alignment--;
 620                                 }
 621                                 else {
 622                                         if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
 623                                                 SLJIT_FREE_EXEC(code);
 624                                                 compiler->error = SLJIT_ERR_ALLOC_FAILED;
 625                                                 return NULL;
 626                                         }
 627                                         buf_ptr++;
 628                                         if (++cpool_current_index >= cpool_size) {
 629                                                 SLJIT_ASSERT(!first_patch);
 630                                                 cpool_size = 0;
 631                                                 if (label && label->size == word_count) {
 632                                                         /* Points after the current instruction. */
 633                                                         label->addr = (sljit_uw)code_ptr;
 634                                                         label->size = code_ptr - code;
 635                                                         label = label->next;
 636                                                 }
 637                                         }
 638                                 }
 639                         }
 640                         else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
 641 #endif
 642                                 *code_ptr = *buf_ptr++;
 643                                 /* These structures are ordered by their address. */
 644                                 SLJIT_ASSERT(!label || label->size >= word_count);
 645                                 SLJIT_ASSERT(!jump || jump->addr >= word_count);
 646                                 SLJIT_ASSERT(!const_ || const_->addr >= word_count);
 647                                 if (jump && jump->addr == word_count) {
 648 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 649                                         if (detect_jump_type(jump, code_ptr, code))
 650                                                 code_ptr--;
 651                                         jump->addr = (sljit_uw)code_ptr;
 652 #else
 653                                         jump->addr = (sljit_uw)(code_ptr - 2);
 654                                         if (detect_jump_type(jump, code_ptr, code))
 655                                                 code_ptr -= 2;
 656 #endif
 657                                         jump = jump->next;
 658                                 }
 659                                 if (label && label->size == word_count) {
 660                                         /* code_ptr can be affected above. */
 661                                         label->addr = (sljit_uw)(code_ptr + 1);
 662                                         label->size = (code_ptr + 1) - code;
 663                                         label = label->next;
 664                                 }
 665                                 if (const_ && const_->addr == word_count) {
 666 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 667                                         const_->addr = (sljit_uw)code_ptr;
 668 #else
 669                                         const_->addr = (sljit_uw)(code_ptr - 1);
 670 #endif
 671                                         const_ = const_->next;
 672                                 }
 673                                 code_ptr++;
 674 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 675                         }
 676                         else {
 677                                 /* Fortunately, no need to shift. */
 678                                 cpool_size = *buf_ptr++ & ~PUSH_POOL;
 679                                 SLJIT_ASSERT(cpool_size > 0);
 680                                 cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
 681                                 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
 682                                 if (cpool_current_index > 0) {
 683                                         /* Unconditional branch. */
 684                                         *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
 685                                         code_ptr = cpool_start_address + cpool_current_index;
 686                                 }
 687                                 cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
 688                                 cpool_current_index = 0;
 689                                 last_pc_patch = code_ptr;
 690                         }
 691 #endif
 692                 } while (buf_ptr < buf_end);
 693                 buf = buf->next;
 694         } while (buf);
 695
 696         SLJIT_ASSERT(!label);
 697         SLJIT_ASSERT(!jump);
 698         SLJIT_ASSERT(!const_);
 699
 700 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 701         SLJIT_ASSERT(cpool_size == 0);
 702         if (compiler->cpool_fill > 0) {
 703                 cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
 704                 cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
 705                 if (cpool_current_index > 0)
 706                         code_ptr = cpool_start_address + cpool_current_index;
 707
 708                 buf_ptr = compiler->cpool;
 709                 buf_end = buf_ptr + compiler->cpool_fill;
 710                 cpool_current_index = 0;
 711                 while (buf_ptr < buf_end) {
 712                         if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
 713                                 SLJIT_FREE_EXEC(code);
 714                                 compiler->error = SLJIT_ERR_ALLOC_FAILED;
 715                                 return NULL;
 716                         }
 717                         buf_ptr++;
 718                         cpool_current_index++;
 719                 }
 720                 SLJIT_ASSERT(!first_patch);
 721         }
 722 #endif
 723
 724         jump = compiler->jumps;
 725         while (jump) {
 726                 buf_ptr = (sljit_uw*)jump->addr;
 727
 728                 if (jump->flags & PATCH_B) {
 729                         if (!(jump->flags & JUMP_ADDR)) {
 730                                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 731                                 SLJIT_ASSERT(((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) >= -0x02000000);
 732                                 *buf_ptr |= (((sljit_sw)jump->u.label->addr - (sljit_sw)(buf_ptr + 2)) >> 2) & 0x00ffffff;
 733                         }
 734                         else {
 735                                 SLJIT_ASSERT(((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) >= -0x02000000);
 736                                 *buf_ptr |= (((sljit_sw)jump->u.target - (sljit_sw)(buf_ptr + 2)) >> 2) & 0x00ffffff;
 737                         }
 738                 }
 739                 else if (jump->flags & SLJIT_REWRITABLE_JUMP) {
 740 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 741                         jump->addr = (sljit_uw)code_ptr;
 742                         code_ptr[0] = (sljit_uw)buf_ptr;
 743                         code_ptr[1] = *buf_ptr;
 744                         inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 745                         code_ptr += 2;
 746 #else
 747                         inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 748 #endif
 749                 }
 750                 else {
 751 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 752                         if (jump->flags & IS_BL)
 753                                 buf_ptr--;
 754                         if (*buf_ptr & (1 << 23))
 755                                 buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
 756                         else
 757                                 buf_ptr += 1;
 758                         *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
 759 #else
 760                         inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
 761 #endif
 762                 }
 763                 jump = jump->next;
 764         }
 765
 766 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
 767         const_ = compiler->consts;
 768         while (const_) {
 769                 buf_ptr = (sljit_uw*)const_->addr;
 770                 const_->addr = (sljit_uw)code_ptr;
 771
 772                 code_ptr[0] = (sljit_uw)buf_ptr;
 773                 code_ptr[1] = *buf_ptr;
 774                 if (*buf_ptr & (1 << 23))
 775                         buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
 776                 else
 777                         buf_ptr += 1;
 778                 /* Set the value again (can be a simple constant). */
 779                 inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0);
 780                 code_ptr += 2;
 781
 782                 const_ = const_->next;
 783         }
 784 #endif
 785
 786         SLJIT_ASSERT(code_ptr - code <= (sljit_si)size);
 787
 788         compiler->error = SLJIT_ERR_COMPILED;
 789         compiler->executable_size = (code_ptr - code) * sizeof(sljit_uw);
 790         SLJIT_CACHE_FLUSH(code, code_ptr);
 791         return code;
 792 }
 793
 794 /* --------------------------------------------------------------------- */
 795 /*  Entry, exit                                                          */
 796 /* --------------------------------------------------------------------- */
 797
 798 /* emit_op inp_flags.
 799    WRITE_BACK must be the first, since it is a flag. */
 800 #define WRITE_BACK      0x01
 801 #define ALLOW_IMM       0x02
 802 #define ALLOW_INV_IMM   0x04
 803 #define ALLOW_ANY_IMM   (ALLOW_IMM | ALLOW_INV_IMM)
 804 #define ARG_TEST        0x08
 805
 806 /* Creates an index in data_transfer_insts array. */
 807 #define WORD_DATA       0x00
 808 #define BYTE_DATA       0x10
 809 #define HALF_DATA       0x20
 810 #define SIGNED_DATA     0x40
 811 #define LOAD_DATA       0x80
 812
 813 #define EMIT_INSTRUCTION(inst) \
 814         FAIL_IF(push_inst(compiler, (inst)))
 815
 816 /* Condition: AL. */
 817 #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \
 818         (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2))
 819
 820 static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si inp_flags,
 821         sljit_si dst, sljit_sw dstw,
 822         sljit_si src1, sljit_sw src1w,
 823         sljit_si src2, sljit_sw src2w);
 824
 825 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
 826 {
 827         sljit_si size;
 828         sljit_uw push;
 829
 830         CHECK_ERROR();
 831         check_sljit_emit_enter(compiler, args, scratches, saveds, local_size);
 832
 833         compiler->scratches = scratches;
 834         compiler->saveds = saveds;
 835 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 836         compiler->logical_local_size = local_size;
 837 #endif
 838
 839         /* Push saved registers, temporary registers
 840            stmdb sp!, {..., lr} */
 841         push = PUSH | (1 << 14);
 842         if (scratches >= 5)
 843                 push |= 1 << 11;
 844         if (scratches >= 4)
 845                 push |= 1 << 10;
 846         if (saveds >= 5)
 847                 push |= 1 << 8;
 848         if (saveds >= 4)
 849                 push |= 1 << 7;
 850         if (saveds >= 3)
 851                 push |= 1 << 6;
 852         if (saveds >= 2)
 853                 push |= 1 << 5;
 854         if (saveds >= 1)
 855                 push |= 1 << 4;
 856         EMIT_INSTRUCTION(push);
 857
 858         /* Stack must be aligned to 8 bytes: */
 859         size = (1 + saveds) * sizeof(sljit_uw);
 860         if (scratches >= 4)
 861                 size += (scratches - 3) * sizeof(sljit_uw);
 862         local_size += size;
 863         local_size = (local_size + 7) & ~7;
 864         local_size -= size;
 865         compiler->local_size = local_size;
 866         if (local_size > 0)
 867                 FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size));
 868
 869         if (args >= 1)
 870                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG1, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG1)));
 871         if (args >= 2)
 872                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG2, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG2)));
 873         if (args >= 3)
 874                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_SAVED_REG3, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG3)));
 875
 876         return SLJIT_SUCCESS;
 877 }
 878
 879 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
 880 {
 881         sljit_si size;
 882
 883         CHECK_ERROR_VOID();
 884         check_sljit_set_context(compiler, args, scratches, saveds, local_size);
 885
 886         compiler->scratches = scratches;
 887         compiler->saveds = saveds;
 888 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 889         compiler->logical_local_size = local_size;
 890 #endif
 891
 892         size = (1 + saveds) * sizeof(sljit_uw);
 893         if (scratches >= 4)
 894                 size += (scratches - 3) * sizeof(sljit_uw);
 895         local_size += size;
 896         local_size = (local_size + 7) & ~7;
 897         local_size -= size;
 898         compiler->local_size = local_size;
 899 }
 900
 901 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
 902 {
 903         sljit_uw pop;
 904
 905         CHECK_ERROR();
 906         check_sljit_emit_return(compiler, op, src, srcw);
 907
 908         FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
 909
 910         if (compiler->local_size > 0)
 911                 FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size));
 912
 913         pop = POP | (1 << 15);
 914         /* Push saved registers, temporary registers
 915            ldmia sp!, {..., pc} */
 916         if (compiler->scratches >= 5)
 917                 pop |= 1 << 11;
 918         if (compiler->scratches >= 4)
 919                 pop |= 1 << 10;
 920         if (compiler->saveds >= 5)
 921                 pop |= 1 << 8;
 922         if (compiler->saveds >= 4)
 923                 pop |= 1 << 7;
 924         if (compiler->saveds >= 3)
 925                 pop |= 1 << 6;
 926         if (compiler->saveds >= 2)
 927                 pop |= 1 << 5;
 928         if (compiler->saveds >= 1)
 929                 pop |= 1 << 4;
 930
 931         return push_inst(compiler, pop);
 932 }
 933
 934 /* --------------------------------------------------------------------- */
 935 /*  Operators                                                            */
 936 /* --------------------------------------------------------------------- */
 937
 938 /* s/l - store/load (1 bit)
 939    u/s - signed/unsigned (1 bit)
 940    w/b/h/N - word/byte/half/NOT allowed (2 bit)
 941    It contans 16 items, but not all are different. */
 942
 943 static sljit_sw data_transfer_insts[16] = {
 944 /* s u w */ 0xe5000000 /* str */,
 945 /* s u b */ 0xe5400000 /* strb */,
 946 /* s u h */ 0xe10000b0 /* strh */,
 947 /* s u N */ 0x00000000 /* not allowed */,
 948 /* s s w */ 0xe5000000 /* str */,
 949 /* s s b */ 0xe5400000 /* strb */,
 950 /* s s h */ 0xe10000b0 /* strh */,
 951 /* s s N */ 0x00000000 /* not allowed */,
 952
 953 /* l u w */ 0xe5100000 /* ldr */,
 954 /* l u b */ 0xe5500000 /* ldrb */,
 955 /* l u h */ 0xe11000b0 /* ldrh */,
 956 /* l u N */ 0x00000000 /* not allowed */,
 957 /* l s w */ 0xe5100000 /* ldr */,
 958 /* l s b */ 0xe11000d0 /* ldrsb */,
 959 /* l s h */ 0xe11000f0 /* ldrsh */,
 960 /* l s N */ 0x00000000 /* not allowed */,
 961 };
 962
 963 #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \
 964         (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2))
 965 /* Normal ldr/str instruction.
 966    Type2: ldrsb, ldrh, ldrsh */
 967 #define IS_TYPE1_TRANSFER(type) \
 968         (data_transfer_insts[(type) >> 4] & 0x04000000)
 969 #define TYPE2_TRANSFER_IMM(imm) \
 970         (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
 971
 972 /* flags: */
 973   /* Arguments are swapped. */
 974 #define ARGS_SWAPPED    0x01
 975   /* Inverted immediate. */
 976 #define INV_IMM         0x02
 977   /* Source and destination is register. */
 978 #define REG_DEST        0x04
 979 #define REG_SOURCE      0x08
 980   /* One instruction is enough. */
 981 #define FAST_DEST       0x10
 982   /* Multiple instructions are required. */
 983 #define SLOW_DEST       0x20
 984 /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
 985 #define SET_FLAGS       (1 << 20)
 986 /* dst: reg
 987    src1: reg
 988    src2: reg or imm (if allowed)
 989    SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
 990 #define SRC2_IMM        (1 << 25)
 991
 992 #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \
 993         return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2)))
 994
 995 #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \
 996         return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2))
 997
 998 #define EMIT_SHIFT_INS_AND_RETURN(opcode) \
 999         SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \
1000         if (compiler->shift_imm != 0x20) { \
1001                 SLJIT_ASSERT(src1 == TMP_REG1); \
1002                 SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \
1003                 if (compiler->shift_imm != 0) \
1004                         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])); \
1005                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, reg_map[src2])); \
1006         } \
1007         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])));
1008
1009 static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
1010         sljit_si dst, sljit_si src1, sljit_si src2)
1011 {
1012         sljit_sw mul_inst;
1013
1014         switch (GET_OPCODE(op)) {
1015         case SLJIT_MOV:
1016                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1017                 if (dst != src2) {
1018                         if (src2 & SRC2_IMM) {
1019                                 if (flags & INV_IMM)
1020                                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1021                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1022                         }
1023                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]);
1024                 }
1025                 return SLJIT_SUCCESS;
1026
1027         case SLJIT_MOV_UB:
1028         case SLJIT_MOV_SB:
1029                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1030                 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1031 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1032                         if (op == SLJIT_MOV_UB)
1033                                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff));
1034                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2]));
1035                         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]));
1036 #else
1037                         return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2));
1038 #endif
1039                 }
1040                 else if (dst != src2) {
1041                         SLJIT_ASSERT(src2 & SRC2_IMM);
1042                         if (flags & INV_IMM)
1043                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1044                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1045                 }
1046                 return SLJIT_SUCCESS;
1047
1048         case SLJIT_MOV_UH:
1049         case SLJIT_MOV_SH:
1050                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
1051                 if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) {
1052 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1053                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2]));
1054                         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]));
1055 #else
1056                         return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2));
1057 #endif
1058                 }
1059                 else if (dst != src2) {
1060                         SLJIT_ASSERT(src2 & SRC2_IMM);
1061                         if (flags & INV_IMM)
1062                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1063                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1064                 }
1065                 return SLJIT_SUCCESS;
1066
1067         case SLJIT_NOT:
1068                 if (src2 & SRC2_IMM) {
1069                         if (flags & INV_IMM)
1070                                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2);
1071                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2);
1072                 }
1073                 EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2));
1074
1075         case SLJIT_CLZ:
1076                 SLJIT_ASSERT(!(flags & INV_IMM));
1077                 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1078                 FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
1079                 if (flags & SET_FLAGS)
1080                         EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM);
1081                 return SLJIT_SUCCESS;
1082
1083         case SLJIT_ADD:
1084                 SLJIT_ASSERT(!(flags & INV_IMM));
1085                 EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP);
1086
1087         case SLJIT_ADDC:
1088                 SLJIT_ASSERT(!(flags & INV_IMM));
1089                 EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP);
1090
1091         case SLJIT_SUB:
1092                 SLJIT_ASSERT(!(flags & INV_IMM));
1093                 if (!(flags & ARGS_SWAPPED))
1094                         EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP);
1095                 EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP);
1096
1097         case SLJIT_SUBC:
1098                 SLJIT_ASSERT(!(flags & INV_IMM));
1099                 if (!(flags & ARGS_SWAPPED))
1100                         EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP);
1101                 EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP);
1102
1103         case SLJIT_MUL:
1104                 SLJIT_ASSERT(!(flags & INV_IMM));
1105                 SLJIT_ASSERT(!(src2 & SRC2_IMM));
1106                 if (SLJIT_UNLIKELY(op & SLJIT_SET_O))
1107                         mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12);
1108                 else
1109                         mul_inst = MUL | (reg_map[dst] << 16);
1110
1111                 if (dst != src2)
1112                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2]));
1113                 else if (dst != src1)
1114                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1]));
1115                 else {
1116                         /* Rm and Rd must not be the same register. */
1117                         SLJIT_ASSERT(dst != TMP_REG1);
1118                         FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2])));
1119                         FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1]));
1120                 }
1121
1122                 if (!(op & SLJIT_SET_O))
1123                         return SLJIT_SUCCESS;
1124
1125                 /* We need to use TMP_REG3. */
1126                 compiler->cache_arg = 0;
1127                 compiler->cache_argw = 0;
1128                 /* cmp TMP_REG2, dst asr #31. */
1129                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0));
1130
1131         case SLJIT_AND:
1132                 if (!(flags & INV_IMM))
1133                         EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP);
1134                 EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP);
1135
1136         case SLJIT_OR:
1137                 SLJIT_ASSERT(!(flags & INV_IMM));
1138                 EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP);
1139
1140         case SLJIT_XOR:
1141                 SLJIT_ASSERT(!(flags & INV_IMM));
1142                 EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP);
1143
1144         case SLJIT_SHL:
1145                 EMIT_SHIFT_INS_AND_RETURN(0);
1146
1147         case SLJIT_LSHR:
1148                 EMIT_SHIFT_INS_AND_RETURN(1);
1149
1150         case SLJIT_ASHR:
1151                 EMIT_SHIFT_INS_AND_RETURN(2);
1152         }
1153         SLJIT_ASSERT_STOP();
1154         return SLJIT_SUCCESS;
1155 }
1156
1157 #undef EMIT_DATA_PROCESS_INS_AND_RETURN
1158 #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN
1159 #undef EMIT_SHIFT_INS_AND_RETURN
1160
1161 /* Tests whether the immediate can be stored in the 12 bit imm field.
1162    Returns with 0 if not possible. */
1163 static sljit_uw get_imm(sljit_uw imm)
1164 {
1165         sljit_si rol;
1166
1167         if (imm <= 0xff)
1168                 return SRC2_IMM | imm;
1169
1170         if (!(imm & 0xff000000)) {
1171                 imm <<= 8;
1172                 rol = 8;
1173         }
1174         else {
1175                 imm = (imm << 24) | (imm >> 8);
1176                 rol = 0;
1177         }
1178
1179         if (!(imm & 0xff000000)) {
1180                 imm <<= 8;
1181                 rol += 4;
1182         }
1183
1184         if (!(imm & 0xf0000000)) {
1185                 imm <<= 4;
1186                 rol += 2;
1187         }
1188
1189         if (!(imm & 0xc0000000)) {
1190                 imm <<= 2;
1191                 rol += 1;
1192         }
1193
1194         if (!(imm & 0x00ffffff))
1195                 return SRC2_IMM | (imm >> 24) | (rol << 8);
1196         else
1197                 return 0;
1198 }
1199
1200 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1201 static sljit_si generate_int(struct sljit_compiler *compiler, sljit_si reg, sljit_uw imm, sljit_si positive)
1202 {
1203         sljit_uw mask;
1204         sljit_uw imm1;
1205         sljit_uw imm2;
1206         sljit_si rol;
1207
1208         /* Step1: Search a zero byte (8 continous zero bit). */
1209         mask = 0xff000000;
1210         rol = 8;
1211         while(1) {
1212                 if (!(imm & mask)) {
1213                         /* Rol imm by rol. */
1214                         imm = (imm << rol) | (imm >> (32 - rol));
1215                         /* Calculate arm rol. */
1216                         rol = 4 + (rol >> 1);
1217                         break;
1218                 }
1219                 rol += 2;
1220                 mask >>= 2;
1221                 if (mask & 0x3) {
1222                         /* rol by 8. */
1223                         imm = (imm << 8) | (imm >> 24);
1224                         mask = 0xff00;
1225                         rol = 24;
1226                         while (1) {
1227                                 if (!(imm & mask)) {
1228                                         /* Rol imm by rol. */
1229                                         imm = (imm << rol) | (imm >> (32 - rol));
1230                                         /* Calculate arm rol. */
1231                                         rol = (rol >> 1) - 8;
1232                                         break;
1233                                 }
1234                                 rol += 2;
1235                                 mask >>= 2;
1236                                 if (mask & 0x3)
1237                                         return 0;
1238                         }
1239                         break;
1240                 }
1241         }
1242
1243         /* The low 8 bit must be zero. */
1244         SLJIT_ASSERT(!(imm & 0xff));
1245
1246         if (!(imm & 0xff000000)) {
1247                 imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
1248                 imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
1249         }
1250         else if (imm & 0xc0000000) {
1251                 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1252                 imm <<= 8;
1253                 rol += 4;
1254
1255                 if (!(imm & 0xff000000)) {
1256                         imm <<= 8;
1257                         rol += 4;
1258                 }
1259
1260                 if (!(imm & 0xf0000000)) {
1261                         imm <<= 4;
1262                         rol += 2;
1263                 }
1264
1265                 if (!(imm & 0xc0000000)) {
1266                         imm <<= 2;
1267                         rol += 1;
1268                 }
1269
1270                 if (!(imm & 0x00ffffff))
1271                         imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1272                 else
1273                         return 0;
1274         }
1275         else {
1276                 if (!(imm & 0xf0000000)) {
1277                         imm <<= 4;
1278                         rol += 2;
1279                 }
1280
1281                 if (!(imm & 0xc0000000)) {
1282                         imm <<= 2;
1283                         rol += 1;
1284                 }
1285
1286                 imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
1287                 imm <<= 8;
1288                 rol += 4;
1289
1290                 if (!(imm & 0xf0000000)) {
1291                         imm <<= 4;
1292                         rol += 2;
1293                 }
1294
1295                 if (!(imm & 0xc0000000)) {
1296                         imm <<= 2;
1297                         rol += 1;
1298                 }
1299
1300                 if (!(imm & 0x00ffffff))
1301                         imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
1302                 else
1303                         return 0;
1304         }
1305
1306         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1));
1307         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2));
1308         return 1;
1309 }
1310 #endif
1311
1312 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si reg, sljit_uw imm)
1313 {
1314         sljit_uw tmp;
1315
1316 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1317         if (!(imm & ~0xffff))
1318                 return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
1319 #endif
1320
1321         /* Create imm by 1 inst. */
1322         tmp = get_imm(imm);
1323         if (tmp) {
1324                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp));
1325                 return SLJIT_SUCCESS;
1326         }
1327
1328         tmp = get_imm(~imm);
1329         if (tmp) {
1330                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp));
1331                 return SLJIT_SUCCESS;
1332         }
1333
1334 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
1335         /* Create imm by 2 inst. */
1336         FAIL_IF(generate_int(compiler, reg, imm, 1));
1337         FAIL_IF(generate_int(compiler, reg, ~imm, 0));
1338
1339         /* Load integer. */
1340         return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm);
1341 #else
1342         return emit_imm(compiler, reg, imm);
1343 #endif
1344 }
1345
1346 /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
1347 static sljit_si emit_set_delta(struct sljit_compiler *compiler, sljit_si dst, sljit_si reg, sljit_sw value)
1348 {
1349         if (value >= 0) {
1350                 value = get_imm(value);
1351                 if (value)
1352                         return push_inst(compiler, EMIT_DATA_PROCESS_INS(ADD_DP, 0, dst, reg, value));
1353         }
1354         else {
1355                 value = get_imm(-value);
1356                 if (value)
1357                         return push_inst(compiler, EMIT_DATA_PROCESS_INS(SUB_DP, 0, dst, reg, value));
1358         }
1359         return SLJIT_ERR_UNSUPPORTED;
1360 }
1361
1362 /* Can perform an operation using at most 1 instruction. */
1363 static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si inp_flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1364 {
1365         sljit_uw imm;
1366
1367         if (arg & SLJIT_IMM) {
1368                 imm = get_imm(argw);
1369                 if (imm) {
1370                         if (inp_flags & ARG_TEST)
1371                                 return 1;
1372                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm));
1373                         return -1;
1374                 }
1375                 imm = get_imm(~argw);
1376                 if (imm) {
1377                         if (inp_flags & ARG_TEST)
1378                                 return 1;
1379                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm));
1380                         return -1;
1381                 }
1382                 return 0;
1383         }
1384
1385         SLJIT_ASSERT(arg & SLJIT_MEM);
1386
1387         /* Fast loads/stores. */
1388         if (!(arg & REG_MASK))
1389                 return 0;
1390
1391         if (arg & OFFS_REG_MASK) {
1392                 if ((argw & 0x3) != 0 && !IS_TYPE1_TRANSFER(inp_flags))
1393                         return 0;
1394
1395                 if (inp_flags & ARG_TEST)
1396                         return 1;
1397                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK,
1398                         RM(OFFS_REG(arg)) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7)));
1399                 return -1;
1400         }
1401
1402         if (IS_TYPE1_TRANSFER(inp_flags)) {
1403                 if (argw >= 0 && argw <= 0xfff) {
1404                         if (inp_flags & ARG_TEST)
1405                                 return 1;
1406                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK, argw));
1407                         return -1;
1408                 }
1409                 if (argw < 0 && argw >= -0xfff) {
1410                         if (inp_flags & ARG_TEST)
1411                                 return 1;
1412                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & REG_MASK, -argw));
1413                         return -1;
1414                 }
1415         }
1416         else {
1417                 if (argw >= 0 && argw <= 0xff) {
1418                         if (inp_flags & ARG_TEST)
1419                                 return 1;
1420                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK, TYPE2_TRANSFER_IMM(argw)));
1421                         return -1;
1422                 }
1423                 if (argw < 0 && argw >= -0xff) {
1424                         if (inp_flags & ARG_TEST)
1425                                 return 1;
1426                         argw = -argw;
1427                         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & REG_MASK, TYPE2_TRANSFER_IMM(argw)));
1428                         return -1;
1429                 }
1430         }
1431
1432         return 0;
1433 }
1434
1435 /* See getput_arg below.
1436    Note: can_cache is called only for binary operators. Those
1437    operators always uses word arguments without write back. */
1438 static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1439 {
1440         /* Immediate caching is not supported as it would be an operation on constant arguments. */
1441         if (arg & SLJIT_IMM)
1442                 return 0;
1443
1444         /* Always a simple operation. */
1445         if (arg & OFFS_REG_MASK)
1446                 return 0;
1447
1448         if (!(arg & REG_MASK)) {
1449                 /* Immediate access. */
1450                 if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1451                         return 1;
1452                 return 0;
1453         }
1454
1455         if (argw <= 0xfffff && argw >= -0xfffff)
1456                 return 0;
1457
1458         if (argw == next_argw && (next_arg & SLJIT_MEM))
1459                 return 1;
1460
1461         if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff))
1462                 return 1;
1463
1464         return 0;
1465 }
1466
1467 #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \
1468         if (max_delta & 0xf00) \
1469                 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \
1470         else \
1471                 FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm))));
1472
1473 #define TEST_WRITE_BACK() \
1474         if (inp_flags & WRITE_BACK) { \
1475                 tmp_r = arg & REG_MASK; \
1476                 if (reg == tmp_r) { \
1477                         /* This can only happen for stores */ \
1478                         /* since ldr reg, [reg, ...]! has no meaning */ \
1479                         SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \
1480                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \
1481                         reg = TMP_REG3; \
1482                 } \
1483         }
1484
1485 /* Emit the necessary instructions. See can_cache above. */
1486 static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si inp_flags, sljit_si reg, sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
1487 {
1488         sljit_si tmp_r;
1489         sljit_sw max_delta;
1490         sljit_sw sign;
1491         sljit_uw imm;
1492
1493         if (arg & SLJIT_IMM) {
1494                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1495                 return load_immediate(compiler, reg, argw);
1496         }
1497
1498         SLJIT_ASSERT(arg & SLJIT_MEM);
1499
1500         tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3;
1501         max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff;
1502
1503         if ((arg & REG_MASK) == SLJIT_UNUSED) {
1504                 /* Write back is not used. */
1505                 imm = (sljit_uw)(argw - compiler->cache_argw);
1506                 if ((compiler->cache_arg & SLJIT_IMM) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
1507                         if (imm <= (sljit_uw)max_delta) {
1508                                 sign = 1;
1509                                 argw = argw - compiler->cache_argw;
1510                         }
1511                         else {
1512                                 sign = 0;
1513                                 argw = compiler->cache_argw - argw;
1514                         }
1515
1516                         GETPUT_ARG_DATA_TRANSFER(sign, 0, reg, TMP_REG3, argw);
1517                         return SLJIT_SUCCESS;
1518                 }
1519
1520                 /* With write back, we can create some sophisticated loads, but
1521                    it is hard to decide whether we should convert downward (0s) or upward (1s). */
1522                 imm = (sljit_uw)(argw - next_argw);
1523                 if ((next_arg & SLJIT_MEM) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
1524                         SLJIT_ASSERT(inp_flags & LOAD_DATA);
1525
1526                         compiler->cache_arg = SLJIT_IMM;
1527                         compiler->cache_argw = argw;
1528                         tmp_r = TMP_REG3;
1529                 }
1530
1531                 FAIL_IF(load_immediate(compiler, tmp_r, argw));
1532                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0);
1533                 return SLJIT_SUCCESS;
1534         }
1535
1536         if (arg & OFFS_REG_MASK) {
1537                 SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00));
1538                 if (inp_flags & WRITE_BACK)
1539                         tmp_r = arg & REG_MASK;
1540                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & REG_MASK, RM(OFFS_REG(arg)) | ((argw & 0x3) << 7)));
1541                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0)));
1542                 return SLJIT_SUCCESS;
1543         }
1544
1545         imm = (sljit_uw)(argw - compiler->cache_argw);
1546         if (compiler->cache_arg == arg && imm <= (sljit_uw)max_delta) {
1547                 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1548                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, imm);
1549                 return SLJIT_SUCCESS;
1550         }
1551         if (compiler->cache_arg == arg && imm >= (sljit_uw)-max_delta) {
1552                 SLJIT_ASSERT(!(inp_flags & WRITE_BACK));
1553                 imm = (sljit_uw)-(sljit_sw)imm;
1554                 GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, imm);
1555                 return SLJIT_SUCCESS;
1556         }
1557
1558         imm = get_imm(argw & ~max_delta);
1559         if (imm) {
1560                 TEST_WRITE_BACK();
1561                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & REG_MASK, imm));
1562                 GETPUT_ARG_DATA_TRANSFER(1, inp_flags & WRITE_BACK, reg, tmp_r, argw & max_delta);
1563                 return SLJIT_SUCCESS;
1564         }
1565
1566         imm = get_imm(-argw & ~max_delta);
1567         if (imm) {
1568                 argw = -argw;
1569                 TEST_WRITE_BACK();
1570                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, tmp_r, arg & REG_MASK, imm));
1571                 GETPUT_ARG_DATA_TRANSFER(0, inp_flags & WRITE_BACK, reg, tmp_r, argw & max_delta);
1572                 return SLJIT_SUCCESS;
1573         }
1574
1575         if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) {
1576                 TEST_WRITE_BACK();
1577                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1578                 return SLJIT_SUCCESS;
1579         }
1580
1581         if (argw == next_argw && (next_arg & SLJIT_MEM)) {
1582                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1583                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1584
1585                 compiler->cache_arg = SLJIT_IMM;
1586                 compiler->cache_argw = argw;
1587
1588                 TEST_WRITE_BACK();
1589                 EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1590                 return SLJIT_SUCCESS;
1591         }
1592
1593         imm = (sljit_uw)(argw - next_argw);
1594         if (arg == next_arg && !(inp_flags & WRITE_BACK) && (imm <= (sljit_uw)max_delta || imm >= (sljit_uw)-max_delta)) {
1595                 SLJIT_ASSERT(inp_flags & LOAD_DATA);
1596                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
1597                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & REG_MASK]));
1598
1599                 compiler->cache_arg = arg;
1600                 compiler->cache_argw = argw;
1601
1602                 GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0);
1603                 return SLJIT_SUCCESS;
1604         }
1605
1606         if ((arg & REG_MASK) == tmp_r) {
1607                 compiler->cache_arg = SLJIT_IMM;
1608                 compiler->cache_argw = argw;
1609                 tmp_r = TMP_REG3;
1610         }
1611
1612         FAIL_IF(load_immediate(compiler, tmp_r, argw));
1613         EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & REG_MASK, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0)));
1614         return SLJIT_SUCCESS;
1615 }
1616
1617 static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
1618 {
1619         if (getput_arg_fast(compiler, flags, reg, arg, argw))
1620                 return compiler->error;
1621         compiler->cache_arg = 0;
1622         compiler->cache_argw = 0;
1623         return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
1624 }
1625
1626 static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
1627 {
1628         if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
1629                 return compiler->error;
1630         return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
1631 }
1632
1633 static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si inp_flags,
1634         sljit_si dst, sljit_sw dstw,
1635         sljit_si src1, sljit_sw src1w,
1636         sljit_si src2, sljit_sw src2w)
1637 {
1638         /* arg1 goes to TMP_REG1 or src reg
1639            arg2 goes to TMP_REG2, imm or src reg
1640            TMP_REG3 can be used for caching
1641            result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
1642
1643         /* We prefers register and simple consts. */
1644         sljit_si dst_r;
1645         sljit_si src1_r;
1646         sljit_si src2_r = 0;
1647         sljit_si sugg_src2_r = TMP_REG2;
1648         sljit_si flags = GET_FLAGS(op) ? SET_FLAGS : 0;
1649
1650         compiler->cache_arg = 0;
1651         compiler->cache_argw = 0;
1652
1653         /* Destination check. */
1654         if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
1655                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
1656                         return SLJIT_SUCCESS;
1657                 dst_r = TMP_REG2;
1658         }
1659         else if (FAST_IS_REG(dst)) {
1660                 dst_r = dst;
1661                 flags |= REG_DEST;
1662                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1663                         sugg_src2_r = dst_r;
1664         }
1665         else {
1666                 SLJIT_ASSERT(dst & SLJIT_MEM);
1667                 if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) {
1668                         flags |= FAST_DEST;
1669                         dst_r = TMP_REG2;
1670                 }
1671                 else {
1672                         flags |= SLOW_DEST;
1673                         dst_r = 0;
1674                 }
1675         }
1676
1677         /* Source 1. */
1678         if (FAST_IS_REG(src1))
1679                 src1_r = src1;
1680         else if (FAST_IS_REG(src2)) {
1681                 flags |= ARGS_SWAPPED;
1682                 src1_r = src2;
1683                 src2 = src1;
1684                 src2w = src1w;
1685         }
1686         else do { /* do { } while(0) is used because of breaks. */
1687                 src1_r = 0;
1688                 if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) {
1689                         /* The second check will generate a hit. */
1690                         src2_r = get_imm(src1w);
1691                         if (src2_r) {
1692                                 flags |= ARGS_SWAPPED;
1693                                 src1 = src2;
1694                                 src1w = src2w;
1695                                 break;
1696                         }
1697                         if (inp_flags & ALLOW_INV_IMM) {
1698                                 src2_r = get_imm(~src1w);
1699                                 if (src2_r) {
1700                                         flags |= ARGS_SWAPPED | INV_IMM;
1701                                         src1 = src2;
1702                                         src1w = src2w;
1703                                         break;
1704                                 }
1705                         }
1706                         if (GET_OPCODE(op) == SLJIT_ADD) {
1707                                 src2_r = get_imm(-src1w);
1708                                 if (src2_r) {
1709                                         /* Note: ARGS_SWAPPED is intentionally not applied! */
1710                                         src1 = src2;
1711                                         src1w = src2w;
1712                                         op = SLJIT_SUB | GET_ALL_FLAGS(op);
1713                                         break;
1714                                 }
1715                         }
1716                 }
1717
1718                 if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) {
1719                         FAIL_IF(compiler->error);
1720                         src1_r = TMP_REG1;
1721                 }
1722         } while (0);
1723
1724         /* Source 2. */
1725         if (src2_r == 0) {
1726                 if (FAST_IS_REG(src2)) {
1727                         src2_r = src2;
1728                         flags |= REG_SOURCE;
1729                         if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
1730                                 dst_r = src2_r;
1731                 }
1732                 else do { /* do { } while(0) is used because of breaks. */
1733                         if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) {
1734                                 src2_r = get_imm(src2w);
1735                                 if (src2_r)
1736                                         break;
1737                                 if (inp_flags & ALLOW_INV_IMM) {
1738                                         src2_r = get_imm(~src2w);
1739                                         if (src2_r) {
1740                                                 flags |= INV_IMM;
1741                                                 break;
1742                                         }
1743                                 }
1744                                 if (GET_OPCODE(op) == SLJIT_ADD) {
1745                                         src2_r = get_imm(-src2w);
1746                                         if (src2_r) {
1747                                                 op = SLJIT_SUB | GET_ALL_FLAGS(op);
1748                                                 flags &= ~ARGS_SWAPPED;
1749                                                 break;
1750                                         }
1751                                 }
1752                                 if (GET_OPCODE(op) == SLJIT_SUB && !(flags & ARGS_SWAPPED)) {
1753                                         src2_r = get_imm(-src2w);
1754                                         if (src2_r) {
1755                                                 op = SLJIT_ADD | GET_ALL_FLAGS(op);
1756                                                 flags &= ~ARGS_SWAPPED;
1757                                                 break;
1758                                         }
1759                                 }
1760                         }
1761
1762                         /* src2_r is 0. */
1763                         if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) {
1764                                 FAIL_IF(compiler->error);
1765                                 src2_r = sugg_src2_r;
1766                         }
1767                 } while (0);
1768         }
1769
1770         /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero.
1771            If they are zero, they must not be registers. */
1772         if (src1_r == 0 && src2_r == 0 && dst_r == 0) {
1773                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1774                         SLJIT_ASSERT(!(flags & ARGS_SWAPPED));
1775                         flags |= ARGS_SWAPPED;
1776                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w));
1777                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw));
1778                 }
1779                 else {
1780                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1781                         FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw));
1782                 }
1783                 src1_r = TMP_REG1;
1784                 src2_r = TMP_REG2;
1785         }
1786         else if (src1_r == 0 && src2_r == 0) {
1787                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w));
1788                 src1_r = TMP_REG1;
1789         }
1790         else if (src1_r == 0 && dst_r == 0) {
1791                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw));
1792                 src1_r = TMP_REG1;
1793         }
1794         else if (src2_r == 0 && dst_r == 0) {
1795                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw));
1796                 src2_r = sugg_src2_r;
1797         }
1798
1799         if (dst_r == 0)
1800                 dst_r = TMP_REG2;
1801
1802         if (src1_r == 0) {
1803                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0));
1804                 src1_r = TMP_REG1;
1805         }
1806
1807         if (src2_r == 0) {
1808                 FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0));
1809                 src2_r = sugg_src2_r;
1810         }
1811
1812         FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1813
1814         if (flags & (FAST_DEST | SLOW_DEST)) {
1815                 if (flags & FAST_DEST)
1816                         FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw));
1817                 else
1818                         FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0));
1819         }
1820         return SLJIT_SUCCESS;
1821 }
1822
1823 #ifdef __cplusplus
1824 extern "C" {
1825 #endif
1826
1827 #if defined(__GNUC__)
1828 extern unsigned int __aeabi_uidivmod(unsigned int numerator, unsigned int denominator);
1829 extern int __aeabi_idivmod(int numerator, int denominator);
1830 #else
1831 #error "Software divmod functions are needed"
1832 #endif
1833
1834 #ifdef __cplusplus
1835 }
1836 #endif
1837
1838 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1839 {
1840         CHECK_ERROR();
1841         check_sljit_emit_op0(compiler, op);
1842
1843         op = GET_OPCODE(op);
1844         switch (op) {
1845         case SLJIT_BREAKPOINT:
1846                 EMIT_INSTRUCTION(BKPT);
1847                 break;
1848         case SLJIT_NOP:
1849                 EMIT_INSTRUCTION(NOP);
1850                 break;
1851         case SLJIT_UMUL:
1852         case SLJIT_SMUL:
1853 #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
1854                 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1855                         | (reg_map[SLJIT_SCRATCH_REG2] << 16)
1856                         | (reg_map[SLJIT_SCRATCH_REG1] << 12)
1857                         | (reg_map[SLJIT_SCRATCH_REG1] << 8)
1858                         | reg_map[SLJIT_SCRATCH_REG2]);
1859 #else
1860                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, RM(SLJIT_SCRATCH_REG2)));
1861                 return push_inst(compiler, (op == SLJIT_UMUL ? UMULL : SMULL)
1862                         | (reg_map[SLJIT_SCRATCH_REG2] << 16)
1863                         | (reg_map[SLJIT_SCRATCH_REG1] << 12)
1864                         | (reg_map[SLJIT_SCRATCH_REG1] << 8)
1865                         | reg_map[TMP_REG1]);
1866 #endif
1867         case SLJIT_UDIV:
1868         case SLJIT_SDIV:
1869                 if (compiler->scratches >= 3)
1870                         EMIT_INSTRUCTION(0xe52d2008 /* str r2, [sp, #-8]! */);
1871 #if defined(__GNUC__)
1872                 FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
1873                         (op == SLJIT_UDIV ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod))));
1874 #else
1875 #error "Software divmod functions are needed"
1876 #endif
1877                 if (compiler->scratches >= 3)
1878                         return push_inst(compiler, 0xe49d2008 /* ldr r2, [sp], #8 */);
1879                 return SLJIT_SUCCESS;
1880         }
1881
1882         return SLJIT_SUCCESS;
1883 }
1884
1885 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
1886         sljit_si dst, sljit_sw dstw,
1887         sljit_si src, sljit_sw srcw)
1888 {
1889         CHECK_ERROR();
1890         check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1891         ADJUST_LOCAL_OFFSET(dst, dstw);
1892         ADJUST_LOCAL_OFFSET(src, srcw);
1893
1894         switch (GET_OPCODE(op)) {
1895         case SLJIT_MOV:
1896         case SLJIT_MOV_UI:
1897         case SLJIT_MOV_SI:
1898         case SLJIT_MOV_P:
1899                 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1900
1901         case SLJIT_MOV_UB:
1902                 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1903
1904         case SLJIT_MOV_SB:
1905                 return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1906
1907         case SLJIT_MOV_UH:
1908                 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1909
1910         case SLJIT_MOV_SH:
1911                 return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1912
1913         case SLJIT_MOVU:
1914         case SLJIT_MOVU_UI:
1915         case SLJIT_MOVU_SI:
1916         case SLJIT_MOVU_P:
1917                 return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1918
1919         case SLJIT_MOVU_UB:
1920                 return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1921
1922         case SLJIT_MOVU_SB:
1923                 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) ? (sljit_sb)srcw : srcw);
1924
1925         case SLJIT_MOVU_UH:
1926                 return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1927
1928         case SLJIT_MOVU_SH:
1929                 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) ? (sljit_sh)srcw : srcw);
1930
1931         case SLJIT_NOT:
1932                 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
1933
1934         case SLJIT_NEG:
1935 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
1936                 compiler->skip_checks = 1;
1937 #endif
1938                 return sljit_emit_op2(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw);
1939
1940         case SLJIT_CLZ:
1941                 return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
1942         }
1943
1944         return SLJIT_SUCCESS;
1945 }
1946
1947 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
1948         sljit_si dst, sljit_sw dstw,
1949         sljit_si src1, sljit_sw src1w,
1950         sljit_si src2, sljit_sw src2w)
1951 {
1952         CHECK_ERROR();
1953         check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1954         ADJUST_LOCAL_OFFSET(dst, dstw);
1955         ADJUST_LOCAL_OFFSET(src1, src1w);
1956         ADJUST_LOCAL_OFFSET(src2, src2w);
1957
1958         switch (GET_OPCODE(op)) {
1959         case SLJIT_ADD:
1960         case SLJIT_ADDC:
1961         case SLJIT_SUB:
1962         case SLJIT_SUBC:
1963         case SLJIT_OR:
1964         case SLJIT_XOR:
1965                 return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w);
1966
1967         case SLJIT_MUL:
1968                 return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1969
1970         case SLJIT_AND:
1971                 return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
1972
1973         case SLJIT_SHL:
1974         case SLJIT_LSHR:
1975         case SLJIT_ASHR:
1976                 if (src2 & SLJIT_IMM) {
1977                         compiler->shift_imm = src2w & 0x1f;
1978                         return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
1979                 }
1980                 else {
1981                         compiler->shift_imm = 0x20;
1982                         return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
1983                 }
1984         }
1985
1986         return SLJIT_SUCCESS;
1987 }
1988
1989 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1990 {
1991         check_sljit_get_register_index(reg);
1992         return reg_map[reg];
1993 }
1994
1995 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
1996 {
1997         check_sljit_get_float_register_index(reg);
1998         return reg;
1999 }
2000
2001 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
2002         void *instruction, sljit_si size)
2003 {
2004         CHECK_ERROR();
2005         check_sljit_emit_op_custom(compiler, instruction, size);
2006         SLJIT_ASSERT(size == 4);
2007
2008         return push_inst(compiler, *(sljit_uw*)instruction);
2009 }
2010
2011 /* --------------------------------------------------------------------- */
2012 /*  Floating point operators                                             */
2013 /* --------------------------------------------------------------------- */
2014
2015 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2016
2017 /* 0 - no fpu
2018    1 - vfp */
2019 static sljit_si arm_fpu_type = -1;
2020
2021 static void init_compiler(void)
2022 {
2023         if (arm_fpu_type != -1)
2024                 return;
2025
2026         /* TODO: Only the OS can help to determine the correct fpu type. */
2027         arm_fpu_type = 1;
2028 }
2029
2030 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
2031 {
2032 #ifdef SLJIT_IS_FPU_AVAILABLE
2033         return SLJIT_IS_FPU_AVAILABLE;
2034 #else
2035         if (arm_fpu_type == -1)
2036                 init_compiler();
2037         return arm_fpu_type;
2038 #endif
2039 }
2040
2041 #else
2042
2043 #define arm_fpu_type 1
2044
2045 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
2046 {
2047         /* Always available. */
2048         return 1;
2049 }
2050
2051 #endif
2052
2053 #define FPU_LOAD (1 << 20)
2054 #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \
2055         ((inst) | ((add) << 23) | (reg_map[base] << 16) | (freg << 12) | (offs))
2056 #define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \
2057         ((opcode) | (mode) | ((dst) << 12) | (src1) | ((src2) << 16))
2058
2059 static sljit_si emit_fop_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg, sljit_sw argw)
2060 {
2061         sljit_sw tmp;
2062         sljit_uw imm;
2063         sljit_sw inst = VSTR_F32 | (flags & (SLJIT_SINGLE_OP | FPU_LOAD));
2064         SLJIT_ASSERT(arg & SLJIT_MEM);
2065
2066         if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
2067                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & REG_MASK, RM(OFFS_REG(arg)) | ((argw & 0x3) << 7)));
2068                 arg = SLJIT_MEM | TMP_REG1;
2069                 argw = 0;
2070         }
2071
2072         /* Fast loads and stores. */
2073         if ((arg & REG_MASK)) {
2074                 if (!(argw & ~0x3fc))
2075                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, arg & REG_MASK, reg, argw >> 2));
2076                 if (!(-argw & ~0x3fc))
2077                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, arg & REG_MASK, reg, (-argw) >> 2));
2078         }
2079
2080         if (compiler->cache_arg == arg) {
2081                 tmp = argw - compiler->cache_argw;
2082                 if (!(tmp & ~0x3fc))
2083                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, tmp >> 2));
2084                 if (!(-tmp & ~0x3fc))
2085                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG3, reg, -tmp >> 2));
2086                 if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
2087                         FAIL_IF(compiler->error);
2088                         compiler->cache_argw = argw;
2089                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, 0));
2090                 }
2091         }
2092
2093         if (arg & REG_MASK) {
2094                 if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) {
2095                         FAIL_IF(compiler->error);
2096                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, 0));
2097                 }
2098                 imm = get_imm(argw & ~0x3fc);
2099                 if (imm) {
2100                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & REG_MASK, imm));
2101                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, (argw & 0x3fc) >> 2));
2102                 }
2103                 imm = get_imm(-argw & ~0x3fc);
2104                 if (imm) {
2105                         argw = -argw;
2106                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & REG_MASK, imm));
2107                         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG1, reg, (argw & 0x3fc) >> 2));
2108                 }
2109         }
2110
2111         compiler->cache_arg = arg;
2112         compiler->cache_argw = argw;
2113         if (arg & REG_MASK) {
2114                 FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
2115                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & REG_MASK, reg_map[TMP_REG1]));
2116         }
2117         else
2118                 FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
2119
2120         return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG3, reg, 0));
2121 }
2122
2123 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
2124         sljit_si dst, sljit_sw dstw,
2125         sljit_si src, sljit_sw srcw)
2126 {
2127         sljit_si dst_fr;
2128
2129         CHECK_ERROR();
2130         check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
2131         SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100), float_transfer_bit_error);
2132
2133         compiler->cache_arg = 0;
2134         compiler->cache_argw = 0;
2135         op ^= SLJIT_SINGLE_OP;
2136
2137         if (GET_OPCODE(op) == SLJIT_CMPD) {
2138                 if (dst & SLJIT_MEM) {
2139                         FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, dst, dstw));
2140                         dst = TMP_FREG1;
2141                 }
2142                 if (src & SLJIT_MEM) {
2143                         FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src, srcw));
2144                         src = TMP_FREG2;
2145                 }
2146                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_SINGLE_OP, dst, src, 0));
2147                 EMIT_INSTRUCTION(VMRS);
2148                 return SLJIT_SUCCESS;
2149         }
2150
2151         dst_fr = FAST_IS_REG(dst) ? dst : TMP_FREG1;
2152
2153         if (src & SLJIT_MEM) {
2154                 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, dst_fr, src, srcw));
2155                 src = dst_fr;
2156         }
2157
2158         switch (GET_OPCODE(op)) {
2159                 case SLJIT_MOVD:
2160                         if (src != dst_fr && dst_fr != TMP_FREG1)
2161                                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
2162                         break;
2163                 case SLJIT_NEGD:
2164                         EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
2165                         break;
2166                 case SLJIT_ABSD:
2167                         EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_SINGLE_OP, dst_fr, src, 0));
2168                         break;
2169         }
2170
2171         if (dst_fr == TMP_FREG1) {
2172                 if (GET_OPCODE(op) == SLJIT_MOVD)
2173                         dst_fr = src;
2174                 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), dst_fr, dst, dstw));
2175         }
2176
2177         return SLJIT_SUCCESS;
2178 }
2179
2180 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
2181         sljit_si dst, sljit_sw dstw,
2182         sljit_si src1, sljit_sw src1w,
2183         sljit_si src2, sljit_sw src2w)
2184 {
2185         sljit_si dst_fr;
2186
2187         CHECK_ERROR();
2188         check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
2189
2190         compiler->cache_arg = 0;
2191         compiler->cache_argw = 0;
2192         op ^= SLJIT_SINGLE_OP;
2193
2194         dst_fr = FAST_IS_REG(dst) ? dst : TMP_FREG1;
2195
2196         if (src2 & SLJIT_MEM) {
2197                 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG2, src2, src2w));
2198                 src2 = TMP_FREG2;
2199         }
2200
2201         if (src1 & SLJIT_MEM) {
2202                 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP) | FPU_LOAD, TMP_FREG1, src1, src1w));
2203                 src1 = TMP_FREG1;
2204         }
2205
2206         switch (GET_OPCODE(op)) {
2207         case SLJIT_ADDD:
2208                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
2209                 break;
2210
2211         case SLJIT_SUBD:
2212                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
2213                 break;
2214
2215         case SLJIT_MULD:
2216                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
2217                 break;
2218
2219         case SLJIT_DIVD:
2220                 EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_SINGLE_OP, dst_fr, src2, src1));
2221                 break;
2222         }
2223
2224         if (dst_fr == TMP_FREG1)
2225                 FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_SINGLE_OP), TMP_FREG1, dst, dstw));
2226
2227         return SLJIT_SUCCESS;
2228 }
2229
2230 #undef FPU_LOAD
2231 #undef EMIT_FPU_DATA_TRANSFER
2232 #undef EMIT_FPU_OPERATION
2233
2234 /* --------------------------------------------------------------------- */
2235 /*  Other instructions                                                   */
2236 /* --------------------------------------------------------------------- */
2237
2238 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
2239 {
2240         CHECK_ERROR();
2241         check_sljit_emit_fast_enter(compiler, dst, dstw);
2242         ADJUST_LOCAL_OFFSET(dst, dstw);
2243
2244         /* For UNUSED dst. Uncommon, but possible. */
2245         if (dst == SLJIT_UNUSED)
2246                 return SLJIT_SUCCESS;
2247
2248         if (FAST_IS_REG(dst))
2249                 return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3)));
2250
2251         /* Memory. */
2252         if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw))
2253                 return compiler->error;
2254         /* TMP_REG3 is used for caching. */
2255         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3)));
2256         compiler->cache_arg = 0;
2257         compiler->cache_argw = 0;
2258         return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0);
2259 }
2260
2261 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
2262 {
2263         CHECK_ERROR();
2264         check_sljit_emit_fast_return(compiler, src, srcw);
2265         ADJUST_LOCAL_OFFSET(src, srcw);
2266
2267         if (FAST_IS_REG(src))
2268                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src)));
2269         else if (src & SLJIT_MEM) {
2270                 if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw))
2271                         FAIL_IF(compiler->error);
2272                 else {
2273                         compiler->cache_arg = 0;
2274                         compiler->cache_argw = 0;
2275                         FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0));
2276                         EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2)));
2277                 }
2278         }
2279         else if (src & SLJIT_IMM)
2280                 FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
2281         return push_inst(compiler, BLX | RM(TMP_REG3));
2282 }
2283
2284 /* --------------------------------------------------------------------- */
2285 /*  Conditional instructions                                             */
2286 /* --------------------------------------------------------------------- */
2287
2288 static sljit_uw get_cc(sljit_si type)
2289 {
2290         switch (type) {
2291         case SLJIT_C_EQUAL:
2292         case SLJIT_C_MUL_NOT_OVERFLOW:
2293         case SLJIT_C_FLOAT_EQUAL:
2294                 return 0x00000000;
2295
2296         case SLJIT_C_NOT_EQUAL:
2297         case SLJIT_C_MUL_OVERFLOW:
2298         case SLJIT_C_FLOAT_NOT_EQUAL:
2299                 return 0x10000000;
2300
2301         case SLJIT_C_LESS:
2302         case SLJIT_C_FLOAT_LESS:
2303                 return 0x30000000;
2304
2305         case SLJIT_C_GREATER_EQUAL:
2306         case SLJIT_C_FLOAT_GREATER_EQUAL:
2307                 return 0x20000000;
2308
2309         case SLJIT_C_GREATER:
2310         case SLJIT_C_FLOAT_GREATER:
2311                 return 0x80000000;
2312
2313         case SLJIT_C_LESS_EQUAL:
2314         case SLJIT_C_FLOAT_LESS_EQUAL:
2315                 return 0x90000000;
2316
2317         case SLJIT_C_SIG_LESS:
2318                 return 0xb0000000;
2319
2320         case SLJIT_C_SIG_GREATER_EQUAL:
2321                 return 0xa0000000;
2322
2323         case SLJIT_C_SIG_GREATER:
2324                 return 0xc0000000;
2325
2326         case SLJIT_C_SIG_LESS_EQUAL:
2327                 return 0xd0000000;
2328
2329         case SLJIT_C_OVERFLOW:
2330         case SLJIT_C_FLOAT_UNORDERED:
2331                 return 0x60000000;
2332
2333         case SLJIT_C_NOT_OVERFLOW:
2334         case SLJIT_C_FLOAT_ORDERED:
2335                 return 0x70000000;
2336
2337         default: /* SLJIT_JUMP */
2338                 return 0xe0000000;
2339         }
2340 }
2341
2342 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
2343 {
2344         struct sljit_label *label;
2345
2346         CHECK_ERROR_PTR();
2347         check_sljit_emit_label(compiler);
2348
2349         if (compiler->last_label && compiler->last_label->size == compiler->size)
2350                 return compiler->last_label;
2351
2352         label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
2353         PTR_FAIL_IF(!label);
2354         set_label(label, compiler);
2355         return label;
2356 }
2357
2358 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
2359 {
2360         struct sljit_jump *jump;
2361
2362         CHECK_ERROR_PTR();
2363         check_sljit_emit_jump(compiler, type);
2364
2365         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2366         PTR_FAIL_IF(!jump);
2367         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
2368         type &= 0xff;
2369
2370         /* In ARM, we don't need to touch the arguments. */
2371 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2372         if (type >= SLJIT_FAST_CALL)
2373                 PTR_FAIL_IF(prepare_blx(compiler));
2374         PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0,
2375                 type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0));
2376
2377         if (jump->flags & SLJIT_REWRITABLE_JUMP) {
2378                 jump->addr = compiler->size;
2379                 compiler->patches++;
2380         }
2381
2382         if (type >= SLJIT_FAST_CALL) {
2383                 jump->flags |= IS_BL;
2384                 PTR_FAIL_IF(emit_blx(compiler));
2385         }
2386
2387         if (!(jump->flags & SLJIT_REWRITABLE_JUMP))
2388                 jump->addr = compiler->size;
2389 #else
2390         if (type >= SLJIT_FAST_CALL)
2391                 jump->flags |= IS_BL;
2392         PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2393         PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type)));
2394         jump->addr = compiler->size;
2395 #endif
2396         return jump;
2397 }
2398
2399 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
2400 {
2401         struct sljit_jump *jump;
2402
2403         CHECK_ERROR();
2404         check_sljit_emit_ijump(compiler, type, src, srcw);
2405         ADJUST_LOCAL_OFFSET(src, srcw);
2406
2407         /* In ARM, we don't need to touch the arguments. */
2408         if (!(src & SLJIT_IMM)) {
2409                 if (FAST_IS_REG(src))
2410                         return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
2411
2412                 SLJIT_ASSERT(src & SLJIT_MEM);
2413                 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw));
2414                 return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2));
2415         }
2416
2417         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
2418         FAIL_IF(!jump);
2419         set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
2420         jump->u.target = srcw;
2421
2422 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2423         if (type >= SLJIT_FAST_CALL)
2424                 FAIL_IF(prepare_blx(compiler));
2425         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));
2426         if (type >= SLJIT_FAST_CALL)
2427                 FAIL_IF(emit_blx(compiler));
2428 #else
2429         FAIL_IF(emit_imm(compiler, TMP_REG1, 0));
2430         FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
2431 #endif
2432         jump->addr = compiler->size;
2433         return SLJIT_SUCCESS;
2434 }
2435
2436 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
2437         sljit_si dst, sljit_sw dstw,
2438         sljit_si src, sljit_sw srcw,
2439         sljit_si type)
2440 {
2441         sljit_si dst_r, flags = GET_ALL_FLAGS(op);
2442         sljit_uw cc, ins;
2443
2444         CHECK_ERROR();
2445         check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type);
2446         ADJUST_LOCAL_OFFSET(dst, dstw);
2447         ADJUST_LOCAL_OFFSET(src, srcw);
2448
2449         if (dst == SLJIT_UNUSED)
2450                 return SLJIT_SUCCESS;
2451
2452         op = GET_OPCODE(op);
2453         cc = get_cc(type);
2454         dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
2455
2456         if (op < SLJIT_ADD) {
2457                 EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_r, SLJIT_UNUSED, SRC2_IMM | 0));
2458                 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_r, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc);
2459                 return (dst_r == TMP_REG2) ? emit_op_mem(compiler, WORD_DATA, TMP_REG2, dst, dstw) : SLJIT_SUCCESS;
2460         }
2461
2462         ins = (op == SLJIT_AND ? AND_DP : (op == SLJIT_OR ? ORR_DP : EOR_DP));
2463         if ((op == SLJIT_OR || op == SLJIT_XOR) && FAST_IS_REG(dst) && dst == src) {
2464                 EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc);
2465                 /* The condition must always be set, even if the ORR/EOR is not executed above. */
2466                 return (flags & SLJIT_SET_E) ? push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst))) : SLJIT_SUCCESS;
2467         }
2468
2469         compiler->cache_arg = 0;
2470         compiler->cache_argw = 0;
2471         if (src & SLJIT_MEM) {
2472                 FAIL_IF(emit_op_mem2(compiler, WORD_DATA | LOAD_DATA, TMP_REG1, src, srcw, dst, dstw));
2473                 src = TMP_REG1;
2474                 srcw = 0;
2475         } else if (src & SLJIT_IMM) {
2476                 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
2477                 src = TMP_REG1;
2478                 srcw = 0;
2479         }
2480
2481         EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst_r, src, SRC2_IMM | 1) & ~COND_MASK) | cc);
2482         EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ins, 0, dst_r, src, SRC2_IMM | 0) & ~COND_MASK) | (cc ^ 0x10000000));
2483         if (dst_r == TMP_REG2)
2484                 FAIL_IF(emit_op_mem2(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0));
2485
2486         return (flags & SLJIT_SET_E) ? push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst_r))) : SLJIT_SUCCESS;
2487 }
2488
2489 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
2490 {
2491         struct sljit_const *const_;
2492         sljit_si reg;
2493
2494         CHECK_ERROR_PTR();
2495         check_sljit_emit_const(compiler, dst, dstw, init_value);
2496         ADJUST_LOCAL_OFFSET(dst, dstw);
2497
2498         const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2499         PTR_FAIL_IF(!const_);
2500
2501         reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2502
2503 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
2504         PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value));
2505         compiler->patches++;
2506 #else
2507         PTR_FAIL_IF(emit_imm(compiler, reg, init_value));
2508 #endif
2509         set_const(const_, compiler);
2510
2511         if (dst & SLJIT_MEM)
2512                 PTR_FAIL_IF(emit_op_mem(compiler, WORD_DATA, TMP_REG2, dst, dstw));
2513         return const_;
2514 }
2515
2516 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
2517 {
2518         inline_set_jump_addr(addr, new_addr, 1);
2519 }
2520
2521 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
2522 {
2523         inline_set_const(addr, new_constant, 1);
2524 }