sljit/sljitNativeMIPS_common.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 /* Latest MIPS architecture. */
  28 /* Automatically detect SLJIT_MIPS_R1 */
  29
  30 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
  31 {
  32 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
  33 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
  34         return "MIPS32-R1" SLJIT_CPUINFO;
  35 #else
  36         return "MIPS64-R1" SLJIT_CPUINFO;
  37 #endif
  38 #else /* SLJIT_MIPS_R1 */
  39         return "MIPS III" SLJIT_CPUINFO;
  40 #endif
  41 }
  42
  43 /* Length of an instruction word
  44    Both for mips-32 and mips-64 */
  45 typedef sljit_u32 sljit_ins;
  46
  47 #define TMP_REG1        (SLJIT_NUMBER_OF_REGISTERS + 2)
  48 #define TMP_REG2        (SLJIT_NUMBER_OF_REGISTERS + 3)
  49 #define TMP_REG3        (SLJIT_NUMBER_OF_REGISTERS + 4)
  50
  51 /* For position independent code, t9 must contain the function address. */
  52 #define PIC_ADDR_REG    TMP_REG2
  53
  54 /* Floating point status register. */
  55 #define FCSR_REG        31
  56 /* Return address register. */
  57 #define RETURN_ADDR_REG 31
  58
  59 /* Flags are kept in volatile registers. */
  60 #define EQUAL_FLAG      12
  61 /* And carry flag as well. */
  62 #define ULESS_FLAG      13
  63 #define UGREATER_FLAG   14
  64 #define LESS_FLAG       15
  65 #define GREATER_FLAG    31
  66 #define OVERFLOW_FLAG   1
  67
  68 #define TMP_FREG1       (0)
  69 #define TMP_FREG2       ((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) << 1)
  70
  71 static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
  72         0, 2, 5, 6, 7, 8, 9, 10, 11, 24, 23, 22, 21, 20, 19, 18, 17, 16, 29, 3, 25, 4
  73 };
  74
  75 /* --------------------------------------------------------------------- */
  76 /*  Instrucion forms                                                     */
  77 /* --------------------------------------------------------------------- */
  78
  79 #define S(s)            (reg_map[s] << 21)
  80 #define T(t)            (reg_map[t] << 16)
  81 #define D(d)            (reg_map[d] << 11)
  82 /* Absolute registers. */
  83 #define SA(s)           ((s) << 21)
  84 #define TA(t)           ((t) << 16)
  85 #define DA(d)           ((d) << 11)
  86 #define FT(t)           ((t) << 16)
  87 #define FS(s)           ((s) << 11)
  88 #define FD(d)           ((d) << 6)
  89 #define IMM(imm)        ((imm) & 0xffff)
  90 #define SH_IMM(imm)     ((imm) << 6)
  91
  92 #define DR(dr)          (reg_map[dr])
  93 #define HI(opcode)      ((opcode) << 26)
  94 #define LO(opcode)      (opcode)
  95 /* S = (16 << 21) D = (17 << 21) */
  96 #define FMT_S           (16 << 21)
  97
  98 #define ABS_S           (HI(17) | FMT_S | LO(5))
  99 #define ADD_S           (HI(17) | FMT_S | LO(0))
 100 #define ADDIU           (HI(9))
 101 #define ADDU            (HI(0) | LO(33))
 102 #define AND             (HI(0) | LO(36))
 103 #define ANDI            (HI(12))
 104 #define B               (HI(4))
 105 #define BAL             (HI(1) | (17 << 16))
 106 #define BC1F            (HI(17) | (8 << 21))
 107 #define BC1T            (HI(17) | (8 << 21) | (1 << 16))
 108 #define BEQ             (HI(4))
 109 #define BGEZ            (HI(1) | (1 << 16))
 110 #define BGTZ            (HI(7))
 111 #define BLEZ            (HI(6))
 112 #define BLTZ            (HI(1) | (0 << 16))
 113 #define BNE             (HI(5))
 114 #define BREAK           (HI(0) | LO(13))
 115 #define CFC1            (HI(17) | (2 << 21))
 116 #define C_UN_S          (HI(17) | FMT_S | LO(49))
 117 #define C_UEQ_S         (HI(17) | FMT_S | LO(51))
 118 #define C_ULE_S         (HI(17) | FMT_S | LO(55))
 119 #define C_ULT_S         (HI(17) | FMT_S | LO(53))
 120 #define CVT_S_S         (HI(17) | FMT_S | LO(32))
 121 #define DADDIU          (HI(25))
 122 #define DADDU           (HI(0) | LO(45))
 123 #define DDIV            (HI(0) | LO(30))
 124 #define DDIVU           (HI(0) | LO(31))
 125 #define DIV             (HI(0) | LO(26))
 126 #define DIVU            (HI(0) | LO(27))
 127 #define DIV_S           (HI(17) | FMT_S | LO(3))
 128 #define DMULT           (HI(0) | LO(28))
 129 #define DMULTU          (HI(0) | LO(29))
 130 #define DSLL            (HI(0) | LO(56))
 131 #define DSLL32          (HI(0) | LO(60))
 132 #define DSLLV           (HI(0) | LO(20))
 133 #define DSRA            (HI(0) | LO(59))
 134 #define DSRA32          (HI(0) | LO(63))
 135 #define DSRAV           (HI(0) | LO(23))
 136 #define DSRL            (HI(0) | LO(58))
 137 #define DSRL32          (HI(0) | LO(62))
 138 #define DSRLV           (HI(0) | LO(22))
 139 #define DSUBU           (HI(0) | LO(47))
 140 #define J               (HI(2))
 141 #define JAL             (HI(3))
 142 #define JALR            (HI(0) | LO(9))
 143 #define JR              (HI(0) | LO(8))
 144 #define LD              (HI(55))
 145 #define LUI             (HI(15))
 146 #define LW              (HI(35))
 147 #define MFC1            (HI(17))
 148 #define MFHI            (HI(0) | LO(16))
 149 #define MFLO            (HI(0) | LO(18))
 150 #define MOV_S           (HI(17) | FMT_S | LO(6))
 151 #define MTC1            (HI(17) | (4 << 21))
 152 #define MUL_S           (HI(17) | FMT_S | LO(2))
 153 #define MULT            (HI(0) | LO(24))
 154 #define MULTU           (HI(0) | LO(25))
 155 #define NEG_S           (HI(17) | FMT_S | LO(7))
 156 #define NOP             (HI(0) | LO(0))
 157 #define NOR             (HI(0) | LO(39))
 158 #define OR              (HI(0) | LO(37))
 159 #define ORI             (HI(13))
 160 #define SD              (HI(63))
 161 #define SLT             (HI(0) | LO(42))
 162 #define SLTI            (HI(10))
 163 #define SLTIU           (HI(11))
 164 #define SLTU            (HI(0) | LO(43))
 165 #define SLL             (HI(0) | LO(0))
 166 #define SLLV            (HI(0) | LO(4))
 167 #define SRL             (HI(0) | LO(2))
 168 #define SRLV            (HI(0) | LO(6))
 169 #define SRA             (HI(0) | LO(3))
 170 #define SRAV            (HI(0) | LO(7))
 171 #define SUB_S           (HI(17) | FMT_S | LO(1))
 172 #define SUBU            (HI(0) | LO(35))
 173 #define SW              (HI(43))
 174 #define TRUNC_W_S       (HI(17) | FMT_S | LO(13))
 175 #define XOR             (HI(0) | LO(38))
 176 #define XORI            (HI(14))
 177
 178 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
 179 #define CLZ             (HI(28) | LO(32))
 180 #define DCLZ            (HI(28) | LO(36))
 181 #define MUL             (HI(28) | LO(2))
 182 #define SEB             (HI(31) | (16 << 6) | LO(32))
 183 #define SEH             (HI(31) | (24 << 6) | LO(32))
 184 #endif
 185
 186 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 187 #define ADDU_W          ADDU
 188 #define ADDIU_W         ADDIU
 189 #define SLL_W           SLL
 190 #define SUBU_W          SUBU
 191 #else
 192 #define ADDU_W          DADDU
 193 #define ADDIU_W         DADDIU
 194 #define SLL_W           DSLL
 195 #define SUBU_W          DSUBU
 196 #endif
 197
 198 #define SIMM_MAX        (0x7fff)
 199 #define SIMM_MIN        (-0x8000)
 200 #define UIMM_MAX        (0xffff)
 201
 202 /* dest_reg is the absolute name of the register
 203    Useful for reordering instructions in the delay slot. */
 204 static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins, sljit_s32 delay_slot)
 205 {
 206         SLJIT_ASSERT(delay_slot == MOVABLE_INS || delay_slot >= UNMOVABLE_INS
 207                 || delay_slot == ((ins >> 11) & 0x1f) || delay_slot == ((ins >> 16) & 0x1f));
 208         sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
 209         FAIL_IF(!ptr);
 210         *ptr = ins;
 211         compiler->size++;
 212         compiler->delay_slot = delay_slot;
 213         return SLJIT_SUCCESS;
 214 }
 215
 216 static SLJIT_INLINE sljit_ins invert_branch(sljit_s32 flags)
 217 {
 218         return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
 219 }
 220
 221 static SLJIT_INLINE sljit_ins* detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code)
 222 {
 223         sljit_sw diff;
 224         sljit_uw target_addr;
 225         sljit_ins *inst;
 226         sljit_ins saved_inst;
 227
 228 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 229         if (jump->flags & (SLJIT_REWRITABLE_JUMP | IS_CALL))
 230                 return code_ptr;
 231 #else
 232         if (jump->flags & SLJIT_REWRITABLE_JUMP)
 233                 return code_ptr;
 234 #endif
 235
 236         if (jump->flags & JUMP_ADDR)
 237                 target_addr = jump->u.target;
 238         else {
 239                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 240                 target_addr = (sljit_uw)(code + jump->u.label->size);
 241         }
 242         inst = (sljit_ins*)jump->addr;
 243         if (jump->flags & IS_COND)
 244                 inst--;
 245
 246 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 247         if (jump->flags & IS_CALL)
 248                 goto keep_address;
 249 #endif
 250
 251         /* B instructions. */
 252         if (jump->flags & IS_MOVABLE) {
 253                 diff = ((sljit_sw)target_addr - (sljit_sw)(inst)) >> 2;
 254                 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
 255                         jump->flags |= PATCH_B;
 256
 257                         if (!(jump->flags & IS_COND)) {
 258                                 inst[0] = inst[-1];
 259                                 inst[-1] = (jump->flags & IS_JAL) ? BAL : B;
 260                                 jump->addr -= sizeof(sljit_ins);
 261                                 return inst;
 262                         }
 263                         saved_inst = inst[0];
 264                         inst[0] = inst[-1];
 265                         inst[-1] = saved_inst ^ invert_branch(jump->flags);
 266                         jump->addr -= 2 * sizeof(sljit_ins);
 267                         return inst;
 268                 }
 269         }
 270         else {
 271                 diff = ((sljit_sw)target_addr - (sljit_sw)(inst + 1)) >> 2;
 272                 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
 273                         jump->flags |= PATCH_B;
 274
 275                         if (!(jump->flags & IS_COND)) {
 276                                 inst[0] = (jump->flags & IS_JAL) ? BAL : B;
 277                                 inst[1] = NOP;
 278                                 return inst + 1;
 279                         }
 280                         inst[0] = inst[0] ^ invert_branch(jump->flags);
 281                         inst[1] = NOP;
 282                         jump->addr -= sizeof(sljit_ins);
 283                         return inst + 1;
 284                 }
 285         }
 286
 287         if (jump->flags & IS_COND) {
 288                 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == ((jump->addr + 2 * sizeof(sljit_ins)) & ~0xfffffff)) {
 289                         jump->flags |= PATCH_J;
 290                         saved_inst = inst[0];
 291                         inst[0] = inst[-1];
 292                         inst[-1] = (saved_inst & 0xffff0000) | 3;
 293                         inst[1] = J;
 294                         inst[2] = NOP;
 295                         return inst + 2;
 296                 }
 297                 else if ((target_addr & ~0xfffffff) == ((jump->addr + 3 * sizeof(sljit_ins)) & ~0xfffffff)) {
 298                         jump->flags |= PATCH_J;
 299                         inst[0] = (inst[0] & 0xffff0000) | 3;
 300                         inst[1] = NOP;
 301                         inst[2] = J;
 302                         inst[3] = NOP;
 303                         jump->addr += sizeof(sljit_ins);
 304                         return inst + 3;
 305                 }
 306         }
 307         else {
 308                 /* J instuctions. */
 309                 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == (jump->addr & ~0xfffffff)) {
 310                         jump->flags |= PATCH_J;
 311                         inst[0] = inst[-1];
 312                         inst[-1] = (jump->flags & IS_JAL) ? JAL : J;
 313                         jump->addr -= sizeof(sljit_ins);
 314                         return inst;
 315                 }
 316
 317                 if ((target_addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff)) {
 318                         jump->flags |= PATCH_J;
 319                         inst[0] = (jump->flags & IS_JAL) ? JAL : J;
 320                         inst[1] = NOP;
 321                         return inst + 1;
 322                 }
 323         }
 324
 325 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 326 keep_address:
 327         if (target_addr <= 0x7fffffff) {
 328                 jump->flags |= PATCH_ABS32;
 329                 if (jump->flags & IS_COND) {
 330                         inst[0] -= 4;
 331                         inst++;
 332                 }
 333                 inst[2] = inst[6];
 334                 inst[3] = inst[7];
 335                 return inst + 3;
 336         }
 337         if (target_addr <= 0x7fffffffffffl) {
 338                 jump->flags |= PATCH_ABS48;
 339                 if (jump->flags & IS_COND) {
 340                         inst[0] -= 2;
 341                         inst++;
 342                 }
 343                 inst[4] = inst[6];
 344                 inst[5] = inst[7];
 345                 return inst + 5;
 346         }
 347 #endif
 348
 349         return code_ptr;
 350 }
 351
 352 #ifdef __GNUC__
 353 static __attribute__ ((noinline)) void sljit_cache_flush(void* code, void* code_ptr)
 354 {
 355         SLJIT_CACHE_FLUSH(code, code_ptr);
 356 }
 357 #endif
 358
 359 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
 360 {
 361         struct sljit_memory_fragment *buf;
 362         sljit_ins *code;
 363         sljit_ins *code_ptr;
 364         sljit_ins *buf_ptr;
 365         sljit_ins *buf_end;
 366         sljit_uw word_count;
 367         sljit_uw addr;
 368
 369         struct sljit_label *label;
 370         struct sljit_jump *jump;
 371         struct sljit_const *const_;
 372
 373         CHECK_ERROR_PTR();
 374         CHECK_PTR(check_sljit_generate_code(compiler));
 375         reverse_buf(compiler);
 376
 377         code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
 378         PTR_FAIL_WITH_EXEC_IF(code);
 379         buf = compiler->buf;
 380
 381         code_ptr = code;
 382         word_count = 0;
 383         label = compiler->labels;
 384         jump = compiler->jumps;
 385         const_ = compiler->consts;
 386         do {
 387                 buf_ptr = (sljit_ins*)buf->memory;
 388                 buf_end = buf_ptr + (buf->used_size >> 2);
 389                 do {
 390                         *code_ptr = *buf_ptr++;
 391                         SLJIT_ASSERT(!label || label->size >= word_count);
 392                         SLJIT_ASSERT(!jump || jump->addr >= word_count);
 393                         SLJIT_ASSERT(!const_ || const_->addr >= word_count);
 394                         /* These structures are ordered by their address. */
 395                         if (label && label->size == word_count) {
 396                                 /* Just recording the address. */
 397                                 label->addr = (sljit_uw)code_ptr;
 398                                 label->size = code_ptr - code;
 399                                 label = label->next;
 400                         }
 401                         if (jump && jump->addr == word_count) {
 402 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 403                                 jump->addr = (sljit_uw)(code_ptr - 3);
 404 #else
 405                                 jump->addr = (sljit_uw)(code_ptr - 7);
 406 #endif
 407                                 code_ptr = detect_jump_type(jump, code_ptr, code);
 408                                 jump = jump->next;
 409                         }
 410                         if (const_ && const_->addr == word_count) {
 411                                 /* Just recording the address. */
 412                                 const_->addr = (sljit_uw)code_ptr;
 413                                 const_ = const_->next;
 414                         }
 415                         code_ptr ++;
 416                         word_count ++;
 417                 } while (buf_ptr < buf_end);
 418
 419                 buf = buf->next;
 420         } while (buf);
 421
 422         if (label && label->size == word_count) {
 423                 label->addr = (sljit_uw)code_ptr;
 424                 label->size = code_ptr - code;
 425                 label = label->next;
 426         }
 427
 428         SLJIT_ASSERT(!label);
 429         SLJIT_ASSERT(!jump);
 430         SLJIT_ASSERT(!const_);
 431         SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
 432
 433         jump = compiler->jumps;
 434         while (jump) {
 435                 do {
 436                         addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
 437                         buf_ptr = (sljit_ins*)jump->addr;
 438
 439                         if (jump->flags & PATCH_B) {
 440                                 addr = (sljit_sw)(addr - (jump->addr + sizeof(sljit_ins))) >> 2;
 441                                 SLJIT_ASSERT((sljit_sw)addr <= SIMM_MAX && (sljit_sw)addr >= SIMM_MIN);
 442                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
 443                                 break;
 444                         }
 445                         if (jump->flags & PATCH_J) {
 446                                 SLJIT_ASSERT((addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff));
 447                                 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
 448                                 break;
 449                         }
 450
 451                         /* Set the fields of immediate loads. */
 452 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 453                         buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
 454                         buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
 455 #else
 456                         if (jump->flags & PATCH_ABS32) {
 457                                 SLJIT_ASSERT(addr <= 0x7fffffff);
 458                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
 459                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
 460                         }
 461                         else if (jump->flags & PATCH_ABS48) {
 462                                 SLJIT_ASSERT(addr <= 0x7fffffffffffl);
 463                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 32) & 0xffff);
 464                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 16) & 0xffff);
 465                                 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | (addr & 0xffff);
 466                         }
 467                         else {
 468                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
 469                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
 470                                 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
 471                                 buf_ptr[5] = (buf_ptr[5] & 0xffff0000) | (addr & 0xffff);
 472                         }
 473 #endif
 474                 } while (0);
 475                 jump = jump->next;
 476         }
 477
 478         compiler->error = SLJIT_ERR_COMPILED;
 479         compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
 480 #ifndef __GNUC__
 481         SLJIT_CACHE_FLUSH(code, code_ptr);
 482 #else
 483         /* GCC workaround for invalid code generation with -O2. */
 484         sljit_cache_flush(code, code_ptr);
 485 #endif
 486         return code;
 487 }
 488
 489 /* --------------------------------------------------------------------- */
 490 /*  Entry, exit                                                          */
 491 /* --------------------------------------------------------------------- */
 492
 493 /* Creates an index in data_transfer_insts array. */
 494 #define LOAD_DATA       0x01
 495 #define WORD_DATA       0x00
 496 #define BYTE_DATA       0x02
 497 #define HALF_DATA       0x04
 498 #define INT_DATA        0x06
 499 #define SIGNED_DATA     0x08
 500 /* Separates integer and floating point registers */
 501 #define GPR_REG         0x0f
 502 #define DOUBLE_DATA     0x10
 503 #define SINGLE_DATA     0x12
 504
 505 #define MEM_MASK        0x1f
 506
 507 #define WRITE_BACK      0x00020
 508 #define ARG_TEST        0x00040
 509 #define ALT_KEEP_CACHE  0x00080
 510 #define CUMULATIVE_OP   0x00100
 511 #define LOGICAL_OP      0x00200
 512 #define IMM_OP          0x00400
 513 #define SRC2_IMM        0x00800
 514
 515 #define UNUSED_DEST     0x01000
 516 #define REG_DEST        0x02000
 517 #define REG1_SOURCE     0x04000
 518 #define REG2_SOURCE     0x08000
 519 #define SLOW_SRC1       0x10000
 520 #define SLOW_SRC2       0x20000
 521 #define SLOW_DEST       0x40000
 522
 523 /* Only these flags are set. UNUSED_DEST is not set when no flags should be set. */
 524 #define CHECK_FLAGS(list) \
 525         (!(flags & UNUSED_DEST) || (op & GET_FLAGS(~(list))))
 526
 527 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 528 #define STACK_STORE     SW
 529 #define STACK_LOAD      LW
 530 #else
 531 #define STACK_STORE     SD
 532 #define STACK_LOAD      LD
 533 #endif
 534
 535 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 536 #include "sljitNativeMIPS_32.c"
 537 #else
 538 #include "sljitNativeMIPS_64.c"
 539 #endif
 540
 541 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
 542         sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
 543         sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
 544 {
 545         sljit_ins base;
 546         sljit_s32 i, tmp, offs;
 547
 548         CHECK_ERROR();
 549         CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
 550         set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
 551
 552         local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
 553 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 554         local_size = (local_size + 15) & ~0xf;
 555 #else
 556         local_size = (local_size + 31) & ~0x1f;
 557 #endif
 558         compiler->local_size = local_size;
 559
 560         if (local_size <= SIMM_MAX) {
 561                 /* Frequent case. */
 562                 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-local_size), DR(SLJIT_SP)));
 563                 base = S(SLJIT_SP);
 564         }
 565         else {
 566                 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
 567                 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
 568                 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_SP) | T(TMP_REG1) | D(SLJIT_SP), DR(SLJIT_SP)));
 569                 base = S(TMP_REG2);
 570                 local_size = 0;
 571         }
 572
 573         offs = local_size - (sljit_sw)(sizeof(sljit_sw));
 574         FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(offs), MOVABLE_INS));
 575
 576         tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
 577         for (i = SLJIT_S0; i >= tmp; i--) {
 578                 offs -= (sljit_s32)(sizeof(sljit_sw));
 579                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
 580         }
 581
 582         for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
 583                 offs -= (sljit_s32)(sizeof(sljit_sw));
 584                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(i) | IMM(offs), MOVABLE_INS));
 585         }
 586
 587         if (args >= 1)
 588                 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_S0), DR(SLJIT_S0)));
 589         if (args >= 2)
 590                 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_S1), DR(SLJIT_S1)));
 591         if (args >= 3)
 592                 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_S2), DR(SLJIT_S2)));
 593
 594         return SLJIT_SUCCESS;
 595 }
 596
 597 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
 598         sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds,
 599         sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
 600 {
 601         CHECK_ERROR();
 602         CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
 603         set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
 604
 605         local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1) + SLJIT_LOCALS_OFFSET;
 606 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 607         compiler->local_size = (local_size + 15) & ~0xf;
 608 #else
 609         compiler->local_size = (local_size + 31) & ~0x1f;
 610 #endif
 611         return SLJIT_SUCCESS;
 612 }
 613
 614 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
 615 {
 616         sljit_s32 local_size, i, tmp, offs;
 617         sljit_ins base;
 618
 619         CHECK_ERROR();
 620         CHECK(check_sljit_emit_return(compiler, op, src, srcw));
 621
 622         FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
 623
 624         local_size = compiler->local_size;
 625         if (local_size <= SIMM_MAX)
 626                 base = S(SLJIT_SP);
 627         else {
 628                 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
 629                 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SP) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
 630                 base = S(TMP_REG1);
 631                 local_size = 0;
 632         }
 633
 634         FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - (sljit_s32)sizeof(sljit_sw)), RETURN_ADDR_REG));
 635         offs = local_size - (sljit_s32)GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1);
 636
 637         tmp = compiler->scratches;
 638         for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
 639                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
 640                 offs += (sljit_s32)(sizeof(sljit_sw));
 641         }
 642
 643         tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
 644         for (i = tmp; i <= SLJIT_S0; i++) {
 645                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(i) | IMM(offs), DR(i)));
 646                 offs += (sljit_s32)(sizeof(sljit_sw));
 647         }
 648
 649         SLJIT_ASSERT(offs == local_size - (sljit_sw)(sizeof(sljit_sw)));
 650
 651         FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
 652         if (compiler->local_size <= SIMM_MAX)
 653                 return push_inst(compiler, ADDIU_W | S(SLJIT_SP) | T(SLJIT_SP) | IMM(compiler->local_size), UNMOVABLE_INS);
 654         else
 655                 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_SP), UNMOVABLE_INS);
 656 }
 657
 658 #undef STACK_STORE
 659 #undef STACK_LOAD
 660
 661 /* --------------------------------------------------------------------- */
 662 /*  Operators                                                            */
 663 /* --------------------------------------------------------------------- */
 664
 665 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 666 #define ARCH_32_64(a, b)        a
 667 #else
 668 #define ARCH_32_64(a, b)        b
 669 #endif
 670
 671 static const sljit_ins data_transfer_insts[16 + 4] = {
 672 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
 673 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
 674 /* u b s */ HI(40) /* sb */,
 675 /* u b l */ HI(36) /* lbu */,
 676 /* u h s */ HI(41) /* sh */,
 677 /* u h l */ HI(37) /* lhu */,
 678 /* u i s */ HI(43) /* sw */,
 679 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
 680
 681 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
 682 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
 683 /* s b s */ HI(40) /* sb */,
 684 /* s b l */ HI(32) /* lb */,
 685 /* s h s */ HI(41) /* sh */,
 686 /* s h l */ HI(33) /* lh */,
 687 /* s i s */ HI(43) /* sw */,
 688 /* s i l */ HI(35) /* lw */,
 689
 690 /* d   s */ HI(61) /* sdc1 */,
 691 /* d   l */ HI(53) /* ldc1 */,
 692 /* s   s */ HI(57) /* swc1 */,
 693 /* s   l */ HI(49) /* lwc1 */,
 694 };
 695
 696 #undef ARCH_32_64
 697
 698 /* reg_ar is an absoulute register! */
 699
 700 /* Can perform an operation using at most 1 instruction. */
 701 static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
 702 {
 703         SLJIT_ASSERT(arg & SLJIT_MEM);
 704
 705         if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
 706                 /* Works for both absoulte and relative addresses. */
 707                 if (SLJIT_UNLIKELY(flags & ARG_TEST))
 708                         return 1;
 709                 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
 710                         | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
 711                 return -1;
 712         }
 713         return 0;
 714 }
 715
 716 /* See getput_arg below.
 717    Note: can_cache is called only for binary operators. Those
 718    operators always uses word arguments without write back. */
 719 static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
 720 {
 721         SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
 722
 723         /* Simple operation except for updates. */
 724         if (arg & OFFS_REG_MASK) {
 725                 argw &= 0x3;
 726                 next_argw &= 0x3;
 727                 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
 728                         return 1;
 729                 return 0;
 730         }
 731
 732         if (arg == next_arg) {
 733                 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
 734                         return 1;
 735                 return 0;
 736         }
 737
 738         return 0;
 739 }
 740
 741 /* Emit the necessary instructions. See can_cache above. */
 742 static sljit_s32 getput_arg(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw)
 743 {
 744         sljit_s32 tmp_ar, base, delay_slot;
 745
 746         SLJIT_ASSERT(arg & SLJIT_MEM);
 747         if (!(next_arg & SLJIT_MEM)) {
 748                 next_arg = 0;
 749                 next_argw = 0;
 750         }
 751
 752         if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
 753                 tmp_ar = reg_ar;
 754                 delay_slot = reg_ar;
 755         } else {
 756                 tmp_ar = DR(TMP_REG1);
 757                 delay_slot = MOVABLE_INS;
 758         }
 759         base = arg & REG_MASK;
 760
 761         if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
 762                 argw &= 0x3;
 763                 if ((flags & WRITE_BACK) && reg_ar == DR(base)) {
 764                         SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
 765                         FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
 766                         reg_ar = DR(TMP_REG1);
 767                 }
 768
 769                 /* Using the cache. */
 770                 if (argw == compiler->cache_argw) {
 771                         if (!(flags & WRITE_BACK)) {
 772                                 if (arg == compiler->cache_arg)
 773                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 774                                 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
 775                                         if (arg == next_arg && argw == (next_argw & 0x3)) {
 776                                                 compiler->cache_arg = arg;
 777                                                 compiler->cache_argw = argw;
 778                                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
 779                                                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 780                                         }
 781                                         FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
 782                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 783                                 }
 784                         }
 785                         else {
 786                                 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
 787                                         FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 788                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 789                                 }
 790                         }
 791                 }
 792
 793                 if (SLJIT_UNLIKELY(argw)) {
 794                         compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
 795                         compiler->cache_argw = argw;
 796                         FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
 797                 }
 798
 799                 if (!(flags & WRITE_BACK)) {
 800                         if (arg == next_arg && argw == (next_argw & 0x3)) {
 801                                 compiler->cache_arg = arg;
 802                                 compiler->cache_argw = argw;
 803                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
 804                                 tmp_ar = DR(TMP_REG3);
 805                         }
 806                         else
 807                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
 808                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 809                 }
 810                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(base), DR(base)));
 811                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 812         }
 813
 814         if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
 815                 /* Update only applies if a base register exists. */
 816                 if (reg_ar == DR(base)) {
 817                         SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
 818                         if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
 819                                 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar) | IMM(argw), MOVABLE_INS));
 820                                 if (argw)
 821                                         return push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base));
 822                                 return SLJIT_SUCCESS;
 823                         }
 824                         FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
 825                         reg_ar = DR(TMP_REG1);
 826                 }
 827
 828                 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
 829                         if (argw)
 830                                 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
 831                 }
 832                 else {
 833                         if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 834                                 if (argw != compiler->cache_argw) {
 835                                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 836                                         compiler->cache_argw = argw;
 837                                 }
 838                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 839                         }
 840                         else {
 841                                 compiler->cache_arg = SLJIT_MEM;
 842                                 compiler->cache_argw = argw;
 843                                 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
 844                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 845                         }
 846                 }
 847                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 848         }
 849
 850         if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 851                 if (argw != compiler->cache_argw) {
 852                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 853                         compiler->cache_argw = argw;
 854                 }
 855                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 856         }
 857
 858         if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 859                 if (argw != compiler->cache_argw)
 860                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 861         }
 862         else {
 863                 compiler->cache_arg = SLJIT_MEM;
 864                 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
 865         }
 866         compiler->cache_argw = argw;
 867
 868         if (!base)
 869                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 870
 871         if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
 872                 compiler->cache_arg = arg;
 873                 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
 874                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 875         }
 876
 877         FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
 878         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 879 }
 880
 881 static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg_ar, sljit_s32 arg, sljit_sw argw)
 882 {
 883         if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
 884                 return compiler->error;
 885         compiler->cache_arg = 0;
 886         compiler->cache_argw = 0;
 887         return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
 888 }
 889
 890 static SLJIT_INLINE sljit_s32 emit_op_mem2(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg1, sljit_sw arg1w, sljit_s32 arg2, sljit_sw arg2w)
 891 {
 892         if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
 893                 return compiler->error;
 894         return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
 895 }
 896
 897 static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
 898         sljit_s32 dst, sljit_sw dstw,
 899         sljit_s32 src1, sljit_sw src1w,
 900         sljit_s32 src2, sljit_sw src2w)
 901 {
 902         /* arg1 goes to TMP_REG1 or src reg
 903            arg2 goes to TMP_REG2, imm or src reg
 904            TMP_REG3 can be used for caching
 905            result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
 906         sljit_s32 dst_r = TMP_REG2;
 907         sljit_s32 src1_r;
 908         sljit_sw src2_r = 0;
 909         sljit_s32 sugg_src2_r = TMP_REG2;
 910
 911         if (!(flags & ALT_KEEP_CACHE)) {
 912                 compiler->cache_arg = 0;
 913                 compiler->cache_argw = 0;
 914         }
 915
 916         if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
 917                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32 && !(src2 & SLJIT_MEM))
 918                         return SLJIT_SUCCESS;
 919                 if (GET_FLAGS(op))
 920                         flags |= UNUSED_DEST;
 921         }
 922         else if (FAST_IS_REG(dst)) {
 923                 dst_r = dst;
 924                 flags |= REG_DEST;
 925                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
 926                         sugg_src2_r = dst_r;
 927         }
 928         else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
 929                 flags |= SLOW_DEST;
 930
 931         if (flags & IMM_OP) {
 932                 if ((src2 & SLJIT_IMM) && src2w) {
 933                         if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
 934                                 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
 935                                 flags |= SRC2_IMM;
 936                                 src2_r = src2w;
 937                         }
 938                 }
 939                 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
 940                         if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
 941                                 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
 942                                 flags |= SRC2_IMM;
 943                                 src2_r = src1w;
 944
 945                                 /* And swap arguments. */
 946                                 src1 = src2;
 947                                 src1w = src2w;
 948                                 src2 = SLJIT_IMM;
 949                                 /* src2w = src2_r unneeded. */
 950                         }
 951                 }
 952         }
 953
 954         /* Source 1. */
 955         if (FAST_IS_REG(src1)) {
 956                 src1_r = src1;
 957                 flags |= REG1_SOURCE;
 958         }
 959         else if (src1 & SLJIT_IMM) {
 960                 if (src1w) {
 961                         FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
 962                         src1_r = TMP_REG1;
 963                 }
 964                 else
 965                         src1_r = 0;
 966         }
 967         else {
 968                 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
 969                         FAIL_IF(compiler->error);
 970                 else
 971                         flags |= SLOW_SRC1;
 972                 src1_r = TMP_REG1;
 973         }
 974
 975         /* Source 2. */
 976         if (FAST_IS_REG(src2)) {
 977                 src2_r = src2;
 978                 flags |= REG2_SOURCE;
 979                 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_S32)
 980                         dst_r = src2_r;
 981         }
 982         else if (src2 & SLJIT_IMM) {
 983                 if (!(flags & SRC2_IMM)) {
 984                         if (src2w) {
 985                                 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
 986                                 src2_r = sugg_src2_r;
 987                         }
 988                         else {
 989                                 src2_r = 0;
 990                                 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_S32) && (dst & SLJIT_MEM))
 991                                         dst_r = 0;
 992                         }
 993                 }
 994         }
 995         else {
 996                 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
 997                         FAIL_IF(compiler->error);
 998                 else
 999                         flags |= SLOW_SRC2;
1000                 src2_r = sugg_src2_r;
1001         }
1002
1003         if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1004                 SLJIT_ASSERT(src2_r == TMP_REG2);
1005                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1006                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
1007                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1008                 }
1009                 else {
1010                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1011                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1012                 }
1013         }
1014         else if (flags & SLOW_SRC1)
1015                 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1016         else if (flags & SLOW_SRC2)
1017                 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1018
1019         FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1020
1021         if (dst & SLJIT_MEM) {
1022                 if (!(flags & SLOW_DEST)) {
1023                         getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1024                         return compiler->error;
1025                 }
1026                 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1027         }
1028
1029         return SLJIT_SUCCESS;
1030 }
1031
1032 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
1033 {
1034 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1035         sljit_s32 int_op = op & SLJIT_I32_OP;
1036 #endif
1037
1038         CHECK_ERROR();
1039         CHECK(check_sljit_emit_op0(compiler, op));
1040
1041         op = GET_OPCODE(op);
1042         switch (op) {
1043         case SLJIT_BREAKPOINT:
1044                 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1045         case SLJIT_NOP:
1046                 return push_inst(compiler, NOP, UNMOVABLE_INS);
1047         case SLJIT_LMUL_UW:
1048         case SLJIT_LMUL_SW:
1049 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1050                 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? DMULTU : DMULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1051 #else
1052                 FAIL_IF(push_inst(compiler, (op == SLJIT_LMUL_UW ? MULTU : MULT) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1053 #endif
1054                 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1055                 return push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1056         case SLJIT_DIVMOD_UW:
1057         case SLJIT_DIVMOD_SW:
1058         case SLJIT_DIV_UW:
1059         case SLJIT_DIV_SW:
1060                 SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
1061 #if !(defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
1062                 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1063                 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1064 #endif
1065
1066 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1067                 if (int_op)
1068                         FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1069                 else
1070                         FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DDIVU : DDIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1071 #else
1072                 FAIL_IF(push_inst(compiler, ((op | 0x2) == SLJIT_DIV_UW ? DIVU : DIV) | S(SLJIT_R0) | T(SLJIT_R1), MOVABLE_INS));
1073 #endif
1074
1075                 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_R0), DR(SLJIT_R0)));
1076                 return (op >= SLJIT_DIV_UW) ? SLJIT_SUCCESS : push_inst(compiler, MFHI | D(SLJIT_R1), DR(SLJIT_R1));
1077         }
1078
1079         return SLJIT_SUCCESS;
1080 }
1081
1082 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1083         sljit_s32 dst, sljit_sw dstw,
1084         sljit_s32 src, sljit_sw srcw)
1085 {
1086 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1087 #       define flags 0
1088 #else
1089         sljit_s32 flags = 0;
1090 #endif
1091
1092         CHECK_ERROR();
1093         CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
1094         ADJUST_LOCAL_OFFSET(dst, dstw);
1095         ADJUST_LOCAL_OFFSET(src, srcw);
1096
1097 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1098         if ((op & SLJIT_I32_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1099                 flags |= INT_DATA | SIGNED_DATA;
1100                 if (src & SLJIT_IMM)
1101                         srcw = (sljit_s32)srcw;
1102         }
1103 #endif
1104
1105         switch (GET_OPCODE(op)) {
1106         case SLJIT_MOV:
1107         case SLJIT_MOV_P:
1108                 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1109
1110         case SLJIT_MOV_U32:
1111 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1112                 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1113 #else
1114                 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1115 #endif
1116
1117         case SLJIT_MOV_S32:
1118 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1119                 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1120 #else
1121                 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1122 #endif
1123
1124         case SLJIT_MOV_U8:
1125                 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1126
1127         case SLJIT_MOV_S8:
1128                 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1129
1130         case SLJIT_MOV_U16:
1131                 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1132
1133         case SLJIT_MOV_S16:
1134                 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1135
1136         case SLJIT_MOVU:
1137         case SLJIT_MOVU_P:
1138                 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1139
1140         case SLJIT_MOVU_U32:
1141 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1142                 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1143 #else
1144                 return emit_op(compiler, SLJIT_MOV_U32, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u32)srcw : srcw);
1145 #endif
1146
1147         case SLJIT_MOVU_S32:
1148 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1149                 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1150 #else
1151                 return emit_op(compiler, SLJIT_MOV_S32, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s32)srcw : srcw);
1152 #endif
1153
1154         case SLJIT_MOVU_U8:
1155                 return emit_op(compiler, SLJIT_MOV_U8, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u8)srcw : srcw);
1156
1157         case SLJIT_MOVU_S8:
1158                 return emit_op(compiler, SLJIT_MOV_S8, BYTE_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s8)srcw : srcw);
1159
1160         case SLJIT_MOVU_U16:
1161                 return emit_op(compiler, SLJIT_MOV_U16, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_u16)srcw : srcw);
1162
1163         case SLJIT_MOVU_S16:
1164                 return emit_op(compiler, SLJIT_MOV_S16, HALF_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_s16)srcw : srcw);
1165
1166         case SLJIT_NOT:
1167                 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1168
1169         case SLJIT_NEG:
1170                 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1171
1172         case SLJIT_CLZ:
1173                 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1174         }
1175
1176         return SLJIT_SUCCESS;
1177
1178 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1179 #       undef flags
1180 #endif
1181 }
1182
1183 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1184         sljit_s32 dst, sljit_sw dstw,
1185         sljit_s32 src1, sljit_sw src1w,
1186         sljit_s32 src2, sljit_sw src2w)
1187 {
1188 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1189 #       define flags 0
1190 #else
1191         sljit_s32 flags = 0;
1192 #endif
1193
1194         CHECK_ERROR();
1195         CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1196         ADJUST_LOCAL_OFFSET(dst, dstw);
1197         ADJUST_LOCAL_OFFSET(src1, src1w);
1198         ADJUST_LOCAL_OFFSET(src2, src2w);
1199
1200 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1201         if (op & SLJIT_I32_OP) {
1202                 flags |= INT_DATA | SIGNED_DATA;
1203                 if (src1 & SLJIT_IMM)
1204                         src1w = (sljit_s32)src1w;
1205                 if (src2 & SLJIT_IMM)
1206                         src2w = (sljit_s32)src2w;
1207         }
1208 #endif
1209
1210         switch (GET_OPCODE(op)) {
1211         case SLJIT_ADD:
1212         case SLJIT_ADDC:
1213                 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1214
1215         case SLJIT_SUB:
1216         case SLJIT_SUBC:
1217                 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1218
1219         case SLJIT_MUL:
1220                 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1221
1222         case SLJIT_AND:
1223         case SLJIT_OR:
1224         case SLJIT_XOR:
1225                 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1226
1227         case SLJIT_SHL:
1228         case SLJIT_LSHR:
1229         case SLJIT_ASHR:
1230 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1231                 if (src2 & SLJIT_IMM)
1232                         src2w &= 0x1f;
1233 #else
1234                 if (src2 & SLJIT_IMM) {
1235                         if (op & SLJIT_I32_OP)
1236                                 src2w &= 0x1f;
1237                         else
1238                                 src2w &= 0x3f;
1239                 }
1240 #endif
1241                 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1242         }
1243
1244         return SLJIT_SUCCESS;
1245
1246 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1247 #       undef flags
1248 #endif
1249 }
1250
1251 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
1252 {
1253         CHECK_REG_INDEX(check_sljit_get_register_index(reg));
1254         return reg_map[reg];
1255 }
1256
1257 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
1258 {
1259         CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
1260         return reg << 1;
1261 }
1262
1263 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1264         void *instruction, sljit_s32 size)
1265 {
1266         CHECK_ERROR();
1267         CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
1268
1269         return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1270 }
1271
1272 /* --------------------------------------------------------------------- */
1273 /*  Floating point operators                                             */
1274 /* --------------------------------------------------------------------- */
1275
1276 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void)
1277 {
1278 #ifdef SLJIT_IS_FPU_AVAILABLE
1279         return SLJIT_IS_FPU_AVAILABLE;
1280 #elif defined(__GNUC__)
1281         sljit_sw fir;
1282         asm ("cfc1 %0, $0" : "=r"(fir));
1283         return (fir >> 22) & 0x1;
1284 #else
1285 #error "FIR check is not implemented for this architecture"
1286 #endif
1287 }
1288
1289 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_F32_OP) >> 7))
1290 #define FMT(op) (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) << (21 - 8))
1291
1292 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
1293         sljit_s32 dst, sljit_sw dstw,
1294         sljit_s32 src, sljit_sw srcw)
1295 {
1296 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1297 #       define flags 0
1298 #else
1299         sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_SW_FROM_F64) << 21;
1300 #endif
1301
1302         if (src & SLJIT_MEM) {
1303                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1304                 src = TMP_FREG1;
1305         }
1306         else
1307                 src <<= 1;
1308
1309         FAIL_IF(push_inst(compiler, (TRUNC_W_S ^ (flags >> 19)) | FMT(op) | FS(src) | FD(TMP_FREG1), MOVABLE_INS));
1310
1311         if (dst == SLJIT_UNUSED)
1312                 return SLJIT_SUCCESS;
1313
1314         if (FAST_IS_REG(dst))
1315                 return push_inst(compiler, MFC1 | flags | T(dst) | FS(TMP_FREG1), MOVABLE_INS);
1316
1317         /* Store the integer value from a VFP register. */
1318         return emit_op_mem2(compiler, flags ? DOUBLE_DATA : SINGLE_DATA, TMP_FREG1, dst, dstw, 0, 0);
1319
1320 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1321 #       undef is_long
1322 #endif
1323 }
1324
1325 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
1326         sljit_s32 dst, sljit_sw dstw,
1327         sljit_s32 src, sljit_sw srcw)
1328 {
1329 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1330 #       define flags 0
1331 #else
1332         sljit_s32 flags = (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_SW) << 21;
1333 #endif
1334
1335         sljit_s32 dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1336
1337         if (FAST_IS_REG(src))
1338                 FAIL_IF(push_inst(compiler, MTC1 | flags | T(src) | FS(TMP_FREG1), MOVABLE_INS));
1339         else if (src & SLJIT_MEM) {
1340                 /* Load the integer value into a VFP register. */
1341                 FAIL_IF(emit_op_mem2(compiler, ((flags) ? DOUBLE_DATA : SINGLE_DATA) | LOAD_DATA, TMP_FREG1, src, srcw, dst, dstw));
1342         }
1343         else {
1344 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
1345                 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
1346                         srcw = (sljit_s32)srcw;
1347 #endif
1348                 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), srcw));
1349                 FAIL_IF(push_inst(compiler, MTC1 | flags | T(TMP_REG1) | FS(TMP_FREG1), MOVABLE_INS));
1350         }
1351
1352         FAIL_IF(push_inst(compiler, CVT_S_S | flags | (4 << 21) | (((op & SLJIT_F32_OP) ^ SLJIT_F32_OP) >> 8) | FS(TMP_FREG1) | FD(dst_r), MOVABLE_INS));
1353
1354         if (dst & SLJIT_MEM)
1355                 return emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, 0, 0);
1356         return SLJIT_SUCCESS;
1357
1358 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1359 #       undef flags
1360 #endif
1361 }
1362
1363 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
1364         sljit_s32 src1, sljit_sw src1w,
1365         sljit_s32 src2, sljit_sw src2w)
1366 {
1367         if (src1 & SLJIT_MEM) {
1368                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1369                 src1 = TMP_FREG1;
1370         }
1371         else
1372                 src1 <<= 1;
1373
1374         if (src2 & SLJIT_MEM) {
1375                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1376                 src2 = TMP_FREG2;
1377         }
1378         else
1379                 src2 <<= 1;
1380
1381         /* src2 and src1 are swapped. */
1382         if (op & SLJIT_SET_E) {
1383                 FAIL_IF(push_inst(compiler, C_UEQ_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1384                 FAIL_IF(push_inst(compiler, CFC1 | TA(EQUAL_FLAG) | DA(FCSR_REG), EQUAL_FLAG));
1385                 FAIL_IF(push_inst(compiler, SRL | TA(EQUAL_FLAG) | DA(EQUAL_FLAG) | SH_IMM(23), EQUAL_FLAG));
1386                 FAIL_IF(push_inst(compiler, ANDI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG));
1387         }
1388         if (op & SLJIT_SET_S) {
1389                 /* Mixing the instructions for the two checks. */
1390                 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src2) | FS(src1), UNMOVABLE_INS));
1391                 FAIL_IF(push_inst(compiler, CFC1 | TA(ULESS_FLAG) | DA(FCSR_REG), ULESS_FLAG));
1392                 FAIL_IF(push_inst(compiler, C_ULT_S | FMT(op) | FT(src1) | FS(src2), UNMOVABLE_INS));
1393                 FAIL_IF(push_inst(compiler, SRL | TA(ULESS_FLAG) | DA(ULESS_FLAG) | SH_IMM(23), ULESS_FLAG));
1394                 FAIL_IF(push_inst(compiler, ANDI | SA(ULESS_FLAG) | TA(ULESS_FLAG) | IMM(1), ULESS_FLAG));
1395                 FAIL_IF(push_inst(compiler, CFC1 | TA(UGREATER_FLAG) | DA(FCSR_REG), UGREATER_FLAG));
1396                 FAIL_IF(push_inst(compiler, SRL | TA(UGREATER_FLAG) | DA(UGREATER_FLAG) | SH_IMM(23), UGREATER_FLAG));
1397                 FAIL_IF(push_inst(compiler, ANDI | SA(UGREATER_FLAG) | TA(UGREATER_FLAG) | IMM(1), UGREATER_FLAG));
1398         }
1399         return push_inst(compiler, C_UN_S | FMT(op) | FT(src2) | FS(src1), FCSR_FCC);
1400 }
1401
1402 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1403         sljit_s32 dst, sljit_sw dstw,
1404         sljit_s32 src, sljit_sw srcw)
1405 {
1406         sljit_s32 dst_r;
1407
1408         CHECK_ERROR();
1409         compiler->cache_arg = 0;
1410         compiler->cache_argw = 0;
1411
1412         SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1413         SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
1414
1415         if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32)
1416                 op ^= SLJIT_F32_OP;
1417
1418         dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1419
1420         if (src & SLJIT_MEM) {
1421                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_r, src, srcw, dst, dstw));
1422                 src = dst_r;
1423         }
1424         else
1425                 src <<= 1;
1426
1427         switch (GET_OPCODE(op)) {
1428         case SLJIT_MOV_F64:
1429                 if (src != dst_r) {
1430                         if (dst_r != TMP_FREG1)
1431                                 FAIL_IF(push_inst(compiler, MOV_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1432                         else
1433                                 dst_r = src;
1434                 }
1435                 break;
1436         case SLJIT_NEG_F64:
1437                 FAIL_IF(push_inst(compiler, NEG_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1438                 break;
1439         case SLJIT_ABS_F64:
1440                 FAIL_IF(push_inst(compiler, ABS_S | FMT(op) | FS(src) | FD(dst_r), MOVABLE_INS));
1441                 break;
1442         case SLJIT_CONV_F64_FROM_F32:
1443                 FAIL_IF(push_inst(compiler, CVT_S_S | ((op & SLJIT_F32_OP) ? 1 : (1 << 21)) | FS(src) | FD(dst_r), MOVABLE_INS));
1444                 op ^= SLJIT_F32_OP;
1445                 break;
1446         }
1447
1448         if (dst & SLJIT_MEM)
1449                 return emit_op_mem2(compiler, FLOAT_DATA(op), dst_r, dst, dstw, 0, 0);
1450         return SLJIT_SUCCESS;
1451 }
1452
1453 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1454         sljit_s32 dst, sljit_sw dstw,
1455         sljit_s32 src1, sljit_sw src1w,
1456         sljit_s32 src2, sljit_sw src2w)
1457 {
1458         sljit_s32 dst_r, flags = 0;
1459
1460         CHECK_ERROR();
1461         CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
1462         ADJUST_LOCAL_OFFSET(dst, dstw);
1463         ADJUST_LOCAL_OFFSET(src1, src1w);
1464         ADJUST_LOCAL_OFFSET(src2, src2w);
1465
1466         compiler->cache_arg = 0;
1467         compiler->cache_argw = 0;
1468
1469         dst_r = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1470
1471         if (src1 & SLJIT_MEM) {
1472                 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1473                         FAIL_IF(compiler->error);
1474                         src1 = TMP_FREG1;
1475                 } else
1476                         flags |= SLOW_SRC1;
1477         }
1478         else
1479                 src1 <<= 1;
1480
1481         if (src2 & SLJIT_MEM) {
1482                 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1483                         FAIL_IF(compiler->error);
1484                         src2 = TMP_FREG2;
1485                 } else
1486                         flags |= SLOW_SRC2;
1487         }
1488         else
1489                 src2 <<= 1;
1490
1491         if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1492                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1493                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1494                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1495                 }
1496                 else {
1497                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1498                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1499                 }
1500         }
1501         else if (flags & SLOW_SRC1)
1502                 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1503         else if (flags & SLOW_SRC2)
1504                 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1505
1506         if (flags & SLOW_SRC1)
1507                 src1 = TMP_FREG1;
1508         if (flags & SLOW_SRC2)
1509                 src2 = TMP_FREG2;
1510
1511         switch (GET_OPCODE(op)) {
1512         case SLJIT_ADD_F64:
1513                 FAIL_IF(push_inst(compiler, ADD_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1514                 break;
1515
1516         case SLJIT_SUB_F64:
1517                 FAIL_IF(push_inst(compiler, SUB_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1518                 break;
1519
1520         case SLJIT_MUL_F64:
1521                 FAIL_IF(push_inst(compiler, MUL_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1522                 break;
1523
1524         case SLJIT_DIV_F64:
1525                 FAIL_IF(push_inst(compiler, DIV_S | FMT(op) | FT(src2) | FS(src1) | FD(dst_r), MOVABLE_INS));
1526                 break;
1527         }
1528
1529         if (dst_r == TMP_FREG2)
1530                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1531
1532         return SLJIT_SUCCESS;
1533 }
1534
1535 /* --------------------------------------------------------------------- */
1536 /*  Other instructions                                                   */
1537 /* --------------------------------------------------------------------- */
1538
1539 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
1540 {
1541         CHECK_ERROR();
1542         CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
1543         ADJUST_LOCAL_OFFSET(dst, dstw);
1544
1545         /* For UNUSED dst. Uncommon, but possible. */
1546         if (dst == SLJIT_UNUSED)
1547                 return SLJIT_SUCCESS;
1548
1549         if (FAST_IS_REG(dst))
1550                 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1551
1552         /* Memory. */
1553         return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1554 }
1555
1556 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
1557 {
1558         CHECK_ERROR();
1559         CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
1560         ADJUST_LOCAL_OFFSET(src, srcw);
1561
1562         if (FAST_IS_REG(src))
1563                 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1564         else if (src & SLJIT_MEM)
1565                 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1566         else if (src & SLJIT_IMM)
1567                 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1568
1569         FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1570         return push_inst(compiler, NOP, UNMOVABLE_INS);
1571 }
1572
1573 /* --------------------------------------------------------------------- */
1574 /*  Conditional instructions                                             */
1575 /* --------------------------------------------------------------------- */
1576
1577 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1578 {
1579         struct sljit_label *label;
1580
1581         CHECK_ERROR_PTR();
1582         CHECK_PTR(check_sljit_emit_label(compiler));
1583
1584         if (compiler->last_label && compiler->last_label->size == compiler->size)
1585                 return compiler->last_label;
1586
1587         label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1588         PTR_FAIL_IF(!label);
1589         set_label(label, compiler);
1590         compiler->delay_slot = UNMOVABLE_INS;
1591         return label;
1592 }
1593
1594 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1595 #define JUMP_LENGTH     4
1596 #else
1597 #define JUMP_LENGTH     8
1598 #endif
1599
1600 #define BR_Z(src) \
1601         inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1602         flags = IS_BIT26_COND; \
1603         delay_check = src;
1604
1605 #define BR_NZ(src) \
1606         inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1607         flags = IS_BIT26_COND; \
1608         delay_check = src;
1609
1610 #define BR_T() \
1611         inst = BC1T | JUMP_LENGTH; \
1612         flags = IS_BIT16_COND; \
1613         delay_check = FCSR_FCC;
1614
1615 #define BR_F() \
1616         inst = BC1F | JUMP_LENGTH; \
1617         flags = IS_BIT16_COND; \
1618         delay_check = FCSR_FCC;
1619
1620 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
1621 {
1622         struct sljit_jump *jump;
1623         sljit_ins inst;
1624         sljit_s32 flags = 0;
1625         sljit_s32 delay_check = UNMOVABLE_INS;
1626
1627         CHECK_ERROR_PTR();
1628         CHECK_PTR(check_sljit_emit_jump(compiler, type));
1629
1630         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1631         PTR_FAIL_IF(!jump);
1632         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1633         type &= 0xff;
1634
1635         switch (type) {
1636         case SLJIT_EQUAL:
1637         case SLJIT_NOT_EQUAL_F64:
1638                 BR_NZ(EQUAL_FLAG);
1639                 break;
1640         case SLJIT_NOT_EQUAL:
1641         case SLJIT_EQUAL_F64:
1642                 BR_Z(EQUAL_FLAG);
1643                 break;
1644         case SLJIT_LESS:
1645         case SLJIT_LESS_F64:
1646                 BR_Z(ULESS_FLAG);
1647                 break;
1648         case SLJIT_GREATER_EQUAL:
1649         case SLJIT_GREATER_EQUAL_F64:
1650                 BR_NZ(ULESS_FLAG);
1651                 break;
1652         case SLJIT_GREATER:
1653         case SLJIT_GREATER_F64:
1654                 BR_Z(UGREATER_FLAG);
1655                 break;
1656         case SLJIT_LESS_EQUAL:
1657         case SLJIT_LESS_EQUAL_F64:
1658                 BR_NZ(UGREATER_FLAG);
1659                 break;
1660         case SLJIT_SIG_LESS:
1661                 BR_Z(LESS_FLAG);
1662                 break;
1663         case SLJIT_SIG_GREATER_EQUAL:
1664                 BR_NZ(LESS_FLAG);
1665                 break;
1666         case SLJIT_SIG_GREATER:
1667                 BR_Z(GREATER_FLAG);
1668                 break;
1669         case SLJIT_SIG_LESS_EQUAL:
1670                 BR_NZ(GREATER_FLAG);
1671                 break;
1672         case SLJIT_OVERFLOW:
1673         case SLJIT_MUL_OVERFLOW:
1674                 BR_Z(OVERFLOW_FLAG);
1675                 break;
1676         case SLJIT_NOT_OVERFLOW:
1677         case SLJIT_MUL_NOT_OVERFLOW:
1678                 BR_NZ(OVERFLOW_FLAG);
1679                 break;
1680         case SLJIT_UNORDERED_F64:
1681                 BR_F();
1682                 break;
1683         case SLJIT_ORDERED_F64:
1684                 BR_T();
1685                 break;
1686         default:
1687                 /* Not conditional branch. */
1688                 inst = 0;
1689                 break;
1690         }
1691
1692         jump->flags |= flags;
1693         if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1694                 jump->flags |= IS_MOVABLE;
1695
1696         if (inst)
1697                 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1698
1699         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1700         if (type <= SLJIT_JUMP) {
1701                 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1702                 jump->addr = compiler->size;
1703                 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1704         } else {
1705                 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1706                 /* Cannot be optimized out if type is >= CALL0. */
1707                 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1708                 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1709                 jump->addr = compiler->size;
1710                 /* A NOP if type < CALL1. */
1711                 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS));
1712         }
1713         return jump;
1714 }
1715
1716 #define RESOLVE_IMM1() \
1717         if (src1 & SLJIT_IMM) { \
1718                 if (src1w) { \
1719                         PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1720                         src1 = TMP_REG1; \
1721                 } \
1722                 else \
1723                         src1 = 0; \
1724         }
1725
1726 #define RESOLVE_IMM2() \
1727         if (src2 & SLJIT_IMM) { \
1728                 if (src2w) { \
1729                         PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1730                         src2 = TMP_REG2; \
1731                 } \
1732                 else \
1733                         src2 = 0; \
1734         }
1735
1736 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type,
1737         sljit_s32 src1, sljit_sw src1w,
1738         sljit_s32 src2, sljit_sw src2w)
1739 {
1740         struct sljit_jump *jump;
1741         sljit_s32 flags;
1742         sljit_ins inst;
1743
1744         CHECK_ERROR_PTR();
1745         CHECK_PTR(check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w));
1746         ADJUST_LOCAL_OFFSET(src1, src1w);
1747         ADJUST_LOCAL_OFFSET(src2, src2w);
1748
1749         compiler->cache_arg = 0;
1750         compiler->cache_argw = 0;
1751         flags = ((type & SLJIT_I32_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1752         if (src1 & SLJIT_MEM) {
1753                 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1754                 src1 = TMP_REG1;
1755         }
1756         if (src2 & SLJIT_MEM) {
1757                 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1758                 src2 = TMP_REG2;
1759         }
1760
1761         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1762         PTR_FAIL_IF(!jump);
1763         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1764         type &= 0xff;
1765
1766         if (type <= SLJIT_NOT_EQUAL) {
1767                 RESOLVE_IMM1();
1768                 RESOLVE_IMM2();
1769                 jump->flags |= IS_BIT26_COND;
1770                 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1771                         jump->flags |= IS_MOVABLE;
1772                 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1773         }
1774         else if (type >= SLJIT_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1775                 inst = NOP;
1776                 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1777                         RESOLVE_IMM2();
1778                         switch (type) {
1779                         case SLJIT_SIG_LESS:
1780                                 inst = BLEZ;
1781                                 jump->flags |= IS_BIT26_COND;
1782                                 break;
1783                         case SLJIT_SIG_GREATER_EQUAL:
1784                                 inst = BGTZ;
1785                                 jump->flags |= IS_BIT26_COND;
1786                                 break;
1787                         case SLJIT_SIG_GREATER:
1788                                 inst = BGEZ;
1789                                 jump->flags |= IS_BIT16_COND;
1790                                 break;
1791                         case SLJIT_SIG_LESS_EQUAL:
1792                                 inst = BLTZ;
1793                                 jump->flags |= IS_BIT16_COND;
1794                                 break;
1795                         }
1796                         src1 = src2;
1797                 }
1798                 else {
1799                         RESOLVE_IMM1();
1800                         switch (type) {
1801                         case SLJIT_SIG_LESS:
1802                                 inst = BGEZ;
1803                                 jump->flags |= IS_BIT16_COND;
1804                                 break;
1805                         case SLJIT_SIG_GREATER_EQUAL:
1806                                 inst = BLTZ;
1807                                 jump->flags |= IS_BIT16_COND;
1808                                 break;
1809                         case SLJIT_SIG_GREATER:
1810                                 inst = BLEZ;
1811                                 jump->flags |= IS_BIT26_COND;
1812                                 break;
1813                         case SLJIT_SIG_LESS_EQUAL:
1814                                 inst = BGTZ;
1815                                 jump->flags |= IS_BIT26_COND;
1816                                 break;
1817                         }
1818                 }
1819                 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1820         }
1821         else {
1822                 if (type == SLJIT_LESS || type == SLJIT_GREATER_EQUAL || type == SLJIT_SIG_LESS || type == SLJIT_SIG_GREATER_EQUAL) {
1823                         RESOLVE_IMM1();
1824                         if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1825                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1826                         else {
1827                                 RESOLVE_IMM2();
1828                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1829                         }
1830                         type = (type == SLJIT_LESS || type == SLJIT_SIG_LESS) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1831                 }
1832                 else {
1833                         RESOLVE_IMM2();
1834                         if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1835                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1836                         else {
1837                                 RESOLVE_IMM1();
1838                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1839                         }
1840                         type = (type == SLJIT_GREATER || type == SLJIT_SIG_GREATER) ? SLJIT_NOT_EQUAL : SLJIT_EQUAL;
1841                 }
1842
1843                 jump->flags |= IS_BIT26_COND;
1844                 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1845         }
1846
1847         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1848         PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1849         jump->addr = compiler->size;
1850         PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1851         return jump;
1852 }
1853
1854 #undef RESOLVE_IMM1
1855 #undef RESOLVE_IMM2
1856
1857 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_s32 type,
1858         sljit_s32 src1, sljit_sw src1w,
1859         sljit_s32 src2, sljit_sw src2w)
1860 {
1861         struct sljit_jump *jump;
1862         sljit_ins inst;
1863         sljit_s32 if_true;
1864
1865         CHECK_ERROR_PTR();
1866         CHECK_PTR(check_sljit_emit_fcmp(compiler, type, src1, src1w, src2, src2w));
1867
1868         compiler->cache_arg = 0;
1869         compiler->cache_argw = 0;
1870
1871         if (src1 & SLJIT_MEM) {
1872                 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1873                 src1 = TMP_FREG1;
1874         }
1875         else
1876                 src1 <<= 1;
1877
1878         if (src2 & SLJIT_MEM) {
1879                 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1880                 src2 = TMP_FREG2;
1881         }
1882         else
1883                 src2 <<= 1;
1884
1885         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1886         PTR_FAIL_IF(!jump);
1887         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1888         jump->flags |= IS_BIT16_COND;
1889
1890         switch (type & 0xff) {
1891         case SLJIT_EQUAL_F64:
1892                 inst = C_UEQ_S;
1893                 if_true = 1;
1894                 break;
1895         case SLJIT_NOT_EQUAL_F64:
1896                 inst = C_UEQ_S;
1897                 if_true = 0;
1898                 break;
1899         case SLJIT_LESS_F64:
1900                 inst = C_ULT_S;
1901                 if_true = 1;
1902                 break;
1903         case SLJIT_GREATER_EQUAL_F64:
1904                 inst = C_ULT_S;
1905                 if_true = 0;
1906                 break;
1907         case SLJIT_GREATER_F64:
1908                 inst = C_ULE_S;
1909                 if_true = 0;
1910                 break;
1911         case SLJIT_LESS_EQUAL_F64:
1912                 inst = C_ULE_S;
1913                 if_true = 1;
1914                 break;
1915         case SLJIT_UNORDERED_F64:
1916                 inst = C_UN_S;
1917                 if_true = 1;
1918                 break;
1919         default: /* Make compilers happy. */
1920                 SLJIT_ASSERT_STOP();
1921         case SLJIT_ORDERED_F64:
1922                 inst = C_UN_S;
1923                 if_true = 0;
1924                 break;
1925         }
1926
1927         PTR_FAIL_IF(push_inst(compiler, inst | FMT(type) | FT(src2) | FS(src1), UNMOVABLE_INS));
1928         /* Intentionally the other opcode. */
1929         PTR_FAIL_IF(push_inst(compiler, (if_true ? BC1F : BC1T) | JUMP_LENGTH, UNMOVABLE_INS));
1930         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1931         PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1932         jump->addr = compiler->size;
1933         PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1934         return jump;
1935 }
1936
1937 #undef JUMP_LENGTH
1938 #undef BR_Z
1939 #undef BR_NZ
1940 #undef BR_T
1941 #undef BR_F
1942
1943 #undef FLOAT_DATA
1944 #undef FMT
1945
1946 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
1947 {
1948         sljit_s32 src_r = TMP_REG2;
1949         struct sljit_jump *jump = NULL;
1950
1951         CHECK_ERROR();
1952         CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
1953         ADJUST_LOCAL_OFFSET(src, srcw);
1954
1955         if (FAST_IS_REG(src)) {
1956                 if (DR(src) != 4)
1957                         src_r = src;
1958                 else
1959                         FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1960         }
1961
1962         if (type >= SLJIT_CALL0) {
1963                 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1964                 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1965                         if (src & SLJIT_IMM)
1966                                 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1967                         else {
1968                                 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1969                                 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1970                         }
1971                         FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1972                         /* We need an extra instruction in any case. */
1973                         return push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), UNMOVABLE_INS);
1974                 }
1975
1976                 /* Register input. */
1977                 if (type >= SLJIT_CALL1)
1978                         FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_R0) | TA(0) | DA(4), 4));
1979                 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1980                 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1981         }
1982
1983         if (src & SLJIT_IMM) {
1984                 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1985                 FAIL_IF(!jump);
1986                 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1987                 jump->u.target = srcw;
1988
1989                 if (compiler->delay_slot != UNMOVABLE_INS)
1990                         jump->flags |= IS_MOVABLE;
1991
1992                 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1993         }
1994         else if (src & SLJIT_MEM)
1995                 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1996
1997         FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1998         if (jump)
1999                 jump->addr = compiler->size;
2000         FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
2001         return SLJIT_SUCCESS;
2002 }
2003
2004 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
2005         sljit_s32 dst, sljit_sw dstw,
2006         sljit_s32 src, sljit_sw srcw,
2007         sljit_s32 type)
2008 {
2009         sljit_s32 sugg_dst_ar, dst_ar;
2010         sljit_s32 flags = GET_ALL_FLAGS(op);
2011 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2012 #       define mem_type WORD_DATA
2013 #else
2014         sljit_s32 mem_type = (op & SLJIT_I32_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
2015 #endif
2016
2017         CHECK_ERROR();
2018         CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type));
2019         ADJUST_LOCAL_OFFSET(dst, dstw);
2020
2021         if (dst == SLJIT_UNUSED)
2022                 return SLJIT_SUCCESS;
2023
2024         op = GET_OPCODE(op);
2025 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
2026         if (op == SLJIT_MOV_S32 || op == SLJIT_MOV_U32)
2027                 mem_type = INT_DATA | SIGNED_DATA;
2028 #endif
2029         sugg_dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
2030
2031         compiler->cache_arg = 0;
2032         compiler->cache_argw = 0;
2033         if (op >= SLJIT_ADD && (src & SLJIT_MEM)) {
2034                 ADJUST_LOCAL_OFFSET(src, srcw);
2035                 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), src, srcw, dst, dstw));
2036                 src = TMP_REG1;
2037                 srcw = 0;
2038         }
2039
2040         switch (type & 0xff) {
2041         case SLJIT_EQUAL:
2042         case SLJIT_NOT_EQUAL:
2043                 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2044                 dst_ar = sugg_dst_ar;
2045                 break;
2046         case SLJIT_LESS:
2047         case SLJIT_GREATER_EQUAL:
2048         case SLJIT_LESS_F64:
2049         case SLJIT_GREATER_EQUAL_F64:
2050                 dst_ar = ULESS_FLAG;
2051                 break;
2052         case SLJIT_GREATER:
2053         case SLJIT_LESS_EQUAL:
2054         case SLJIT_GREATER_F64:
2055         case SLJIT_LESS_EQUAL_F64:
2056                 dst_ar = UGREATER_FLAG;
2057                 break;
2058         case SLJIT_SIG_LESS:
2059         case SLJIT_SIG_GREATER_EQUAL:
2060                 dst_ar = LESS_FLAG;
2061                 break;
2062         case SLJIT_SIG_GREATER:
2063         case SLJIT_SIG_LESS_EQUAL:
2064                 dst_ar = GREATER_FLAG;
2065                 break;
2066         case SLJIT_OVERFLOW:
2067         case SLJIT_NOT_OVERFLOW:
2068                 dst_ar = OVERFLOW_FLAG;
2069                 break;
2070         case SLJIT_MUL_OVERFLOW:
2071         case SLJIT_MUL_NOT_OVERFLOW:
2072                 FAIL_IF(push_inst(compiler, SLTIU | SA(OVERFLOW_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2073                 dst_ar = sugg_dst_ar;
2074                 type ^= 0x1; /* Flip type bit for the XORI below. */
2075                 break;
2076         case SLJIT_EQUAL_F64:
2077         case SLJIT_NOT_EQUAL_F64:
2078                 dst_ar = EQUAL_FLAG;
2079                 break;
2080
2081         case SLJIT_UNORDERED_F64:
2082         case SLJIT_ORDERED_F64:
2083                 FAIL_IF(push_inst(compiler, CFC1 | TA(sugg_dst_ar) | DA(FCSR_REG), sugg_dst_ar));
2084                 FAIL_IF(push_inst(compiler, SRL | TA(sugg_dst_ar) | DA(sugg_dst_ar) | SH_IMM(23), sugg_dst_ar));
2085                 FAIL_IF(push_inst(compiler, ANDI | SA(sugg_dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2086                 dst_ar = sugg_dst_ar;
2087                 break;
2088
2089         default:
2090                 SLJIT_ASSERT_STOP();
2091                 dst_ar = sugg_dst_ar;
2092                 break;
2093         }
2094
2095         if (type & 0x1) {
2096                 FAIL_IF(push_inst(compiler, XORI | SA(dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2097                 dst_ar = sugg_dst_ar;
2098         }
2099
2100         if (op >= SLJIT_ADD) {
2101                 if (DR(TMP_REG2) != dst_ar)
2102                         FAIL_IF(push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2103                 return emit_op(compiler, op | flags, mem_type | CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE, dst, dstw, src, srcw, TMP_REG2, 0);
2104         }
2105
2106         if (dst & SLJIT_MEM)
2107                 return emit_op_mem(compiler, mem_type, dst_ar, dst, dstw);
2108
2109         if (sugg_dst_ar != dst_ar)
2110                 return push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | DA(sugg_dst_ar), sugg_dst_ar);
2111         return SLJIT_SUCCESS;
2112
2113 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2114 #       undef mem_type
2115 #endif
2116 }
2117
2118 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
2119 {
2120         struct sljit_const *const_;
2121         sljit_s32 reg;
2122
2123         CHECK_ERROR_PTR();
2124         CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
2125         ADJUST_LOCAL_OFFSET(dst, dstw);
2126
2127         const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2128         PTR_FAIL_IF(!const_);
2129         set_const(const_, compiler);
2130
2131         reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2132
2133         PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2134
2135         if (dst & SLJIT_MEM)
2136                 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2137         return const_;
2138 }