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_32_64 */
  29
  30 SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name(void)
  31 {
  32 #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
  33         return "MIPS V" SLJIT_CPUINFO;
  34 #else
  35         return "MIPS III" SLJIT_CPUINFO;
  36 #endif
  37 }
  38
  39 /* Length of an instruction word
  40    Both for mips-32 and mips-64 */
  41 typedef sljit_ui sljit_ins;
  42
  43 #define TMP_REG1        (SLJIT_NO_REGISTERS + 1)
  44 #define TMP_REG2        (SLJIT_NO_REGISTERS + 2)
  45 #define TMP_REG3        (SLJIT_NO_REGISTERS + 3)
  46
  47 /* For position independent code, t9 must contain the function address. */
  48 #define PIC_ADDR_REG    TMP_REG2
  49
  50 /* TMP_EREGs are used mainly for arithmetic operations. */
  51 #define TMP_EREG1       15
  52 #define TMP_EREG2       24
  53 /* Floating point status register. */
  54 #define FCSR_REG        31
  55 /* Return address register. */
  56 #define RETURN_ADDR_REG 31
  57
  58 /* Flags are keept in volatile registers. */
  59 #define EQUAL_FLAG      7
  60 /* And carry flag as well. */
  61 #define ULESS_FLAG      10
  62 #define UGREATER_FLAG   11
  63 #define LESS_FLAG       12
  64 #define GREATER_FLAG    13
  65 #define OVERFLOW_FLAG   14
  66
  67 #define TMP_FREG1       (0)
  68 #define TMP_FREG2       ((SLJIT_FLOAT_REG6 + 1) << 1)
  69
  70 static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 4] = {
  71         0, 2, 5, 6, 3, 8, 16, 17, 18, 19, 20, 29, 4, 25, 9
  72 };
  73
  74 /* --------------------------------------------------------------------- */
  75 /*  Instrucion forms                                                     */
  76 /* --------------------------------------------------------------------- */
  77
  78 #define S(s)            (reg_map[s] << 21)
  79 #define T(t)            (reg_map[t] << 16)
  80 #define D(d)            (reg_map[d] << 11)
  81 /* Absolute registers. */
  82 #define SA(s)           ((s) << 21)
  83 #define TA(t)           ((t) << 16)
  84 #define DA(d)           ((d) << 11)
  85 #define FT(t)           ((t) << 16)
  86 #define FS(s)           ((s) << 11)
  87 #define FD(d)           ((d) << 6)
  88 #define IMM(imm)        ((imm) & 0xffff)
  89 #define SH_IMM(imm)     ((imm) << 6)
  90
  91 #define DR(dr)          (reg_map[dr])
  92 #define HI(opcode)      ((opcode) << 26)
  93 #define LO(opcode)      (opcode)
  94 /* S = (16 << 21) D = (17 << 21) */
  95 #define FMT_SD          (16 << 21)
  96
  97 #define ABS_fmt         (HI(17) | FMT_SD | LO(5))
  98 #define ADD_fmt         (HI(17) | FMT_SD | LO(0))
  99 #define ADDIU           (HI(9))
 100 #define ADDU            (HI(0) | LO(33))
 101 #define AND             (HI(0) | LO(36))
 102 #define ANDI            (HI(12))
 103 #define B               (HI(4))
 104 #define BAL             (HI(1) | (17 << 16))
 105 #define BC1F            (HI(17) | (8 << 21))
 106 #define BC1T            (HI(17) | (8 << 21) | (1 << 16))
 107 #define BEQ             (HI(4))
 108 #define BGEZ            (HI(1) | (1 << 16))
 109 #define BGTZ            (HI(7))
 110 #define BLEZ            (HI(6))
 111 #define BLTZ            (HI(1) | (0 << 16))
 112 #define BNE             (HI(5))
 113 #define BREAK           (HI(0) | LO(13))
 114 #define CFC1            (HI(17) | (2 << 21))
 115 #define C_UN_fmt        (HI(17) | FMT_SD | LO(49))
 116 #define C_UEQ_fmt       (HI(17) | FMT_SD | LO(51))
 117 #define C_ULE_fmt       (HI(17) | FMT_SD | LO(55))
 118 #define C_ULT_fmt       (HI(17) | FMT_SD | LO(53))
 119 #define DADDIU          (HI(25))
 120 #define DADDU           (HI(0) | LO(45))
 121 #define DDIV            (HI(0) | LO(30))
 122 #define DDIVU           (HI(0) | LO(31))
 123 #define DIV             (HI(0) | LO(26))
 124 #define DIVU            (HI(0) | LO(27))
 125 #define DIV_fmt         (HI(17) | FMT_SD | LO(3))
 126 #define DMULT           (HI(0) | LO(28))
 127 #define DMULTU          (HI(0) | LO(29))
 128 #define DSLL            (HI(0) | LO(56))
 129 #define DSLL32          (HI(0) | LO(60))
 130 #define DSLLV           (HI(0) | LO(20))
 131 #define DSRA            (HI(0) | LO(59))
 132 #define DSRA32          (HI(0) | LO(63))
 133 #define DSRAV           (HI(0) | LO(23))
 134 #define DSRL            (HI(0) | LO(58))
 135 #define DSRL32          (HI(0) | LO(62))
 136 #define DSRLV           (HI(0) | LO(22))
 137 #define DSUBU           (HI(0) | LO(47))
 138 #define J               (HI(2))
 139 #define JAL             (HI(3))
 140 #define JALR            (HI(0) | LO(9))
 141 #define JR              (HI(0) | LO(8))
 142 #define LD              (HI(55))
 143 #define LUI             (HI(15))
 144 #define LW              (HI(35))
 145 #define MFHI            (HI(0) | LO(16))
 146 #define MFLO            (HI(0) | LO(18))
 147 #define MOV_fmt         (HI(17) | FMT_SD | LO(6))
 148 #define MUL_fmt         (HI(17) | FMT_SD | LO(2))
 149 #define MULT            (HI(0) | LO(24))
 150 #define MULTU           (HI(0) | LO(25))
 151 #define NEG_fmt         (HI(17) | FMT_SD | LO(7))
 152 #define NOP             (HI(0) | LO(0))
 153 #define NOR             (HI(0) | LO(39))
 154 #define OR              (HI(0) | LO(37))
 155 #define ORI             (HI(13))
 156 #define SD              (HI(63))
 157 #define SLT             (HI(0) | LO(42))
 158 #define SLTI            (HI(10))
 159 #define SLTIU           (HI(11))
 160 #define SLTU            (HI(0) | LO(43))
 161 #define SLL             (HI(0) | LO(0))
 162 #define SLLV            (HI(0) | LO(4))
 163 #define SRL             (HI(0) | LO(2))
 164 #define SRLV            (HI(0) | LO(6))
 165 #define SRA             (HI(0) | LO(3))
 166 #define SRAV            (HI(0) | LO(7))
 167 #define SUB_fmt         (HI(17) | FMT_SD | LO(1))
 168 #define SUBU            (HI(0) | LO(35))
 169 #define SW              (HI(43))
 170 #define XOR             (HI(0) | LO(38))
 171 #define XORI            (HI(14))
 172
 173 #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
 174 #define CLZ             (HI(28) | LO(32))
 175 #define DCLZ            (HI(28) | LO(36))
 176 #define MUL             (HI(28) | LO(2))
 177 #define SEB             (HI(31) | (16 << 6) | LO(32))
 178 #define SEH             (HI(31) | (24 << 6) | LO(32))
 179 #endif
 180
 181 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 182 #define ADDU_W          ADDU
 183 #define ADDIU_W         ADDIU
 184 #define SLL_W           SLL
 185 #define SUBU_W          SUBU
 186 #else
 187 #define ADDU_W          DADDU
 188 #define ADDIU_W         DADDIU
 189 #define SLL_W           DSLL
 190 #define SUBU_W          DSUBU
 191 #endif
 192
 193 #define SIMM_MAX        (0x7fff)
 194 #define SIMM_MIN        (-0x8000)
 195 #define UIMM_MAX        (0xffff)
 196
 197 /* dest_reg is the absolute name of the register
 198    Useful for reordering instructions in the delay slot. */
 199 static sljit_si push_inst(struct sljit_compiler *compiler, sljit_ins ins, sljit_si delay_slot)
 200 {
 201         SLJIT_ASSERT(delay_slot == MOVABLE_INS || delay_slot >= UNMOVABLE_INS
 202                 || delay_slot == ((ins >> 11) & 0x1f) || delay_slot == ((ins >> 16) & 0x1f));
 203         sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
 204         FAIL_IF(!ptr);
 205         *ptr = ins;
 206         compiler->size++;
 207         compiler->delay_slot = delay_slot;
 208         return SLJIT_SUCCESS;
 209 }
 210
 211 static SLJIT_INLINE sljit_ins invert_branch(sljit_si flags)
 212 {
 213         return (flags & IS_BIT26_COND) ? (1 << 26) : (1 << 16);
 214 }
 215
 216 static SLJIT_INLINE sljit_ins* detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code)
 217 {
 218         sljit_sw diff;
 219         sljit_uw target_addr;
 220         sljit_ins *inst;
 221         sljit_ins saved_inst;
 222
 223 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 224         if (jump->flags & (SLJIT_REWRITABLE_JUMP | IS_CALL))
 225                 return code_ptr;
 226 #else
 227         if (jump->flags & SLJIT_REWRITABLE_JUMP)
 228                 return code_ptr;
 229 #endif
 230
 231         if (jump->flags & JUMP_ADDR)
 232                 target_addr = jump->u.target;
 233         else {
 234                 SLJIT_ASSERT(jump->flags & JUMP_LABEL);
 235                 target_addr = (sljit_uw)(code + jump->u.label->size);
 236         }
 237         inst = (sljit_ins*)jump->addr;
 238         if (jump->flags & IS_COND)
 239                 inst--;
 240
 241 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 242         if (jump->flags & IS_CALL)
 243                 goto keep_address;
 244 #endif
 245
 246         /* B instructions. */
 247         if (jump->flags & IS_MOVABLE) {
 248                 diff = ((sljit_sw)target_addr - (sljit_sw)(inst)) >> 2;
 249                 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
 250                         jump->flags |= PATCH_B;
 251
 252                         if (!(jump->flags & IS_COND)) {
 253                                 inst[0] = inst[-1];
 254                                 inst[-1] = (jump->flags & IS_JAL) ? BAL : B;
 255                                 jump->addr -= sizeof(sljit_ins);
 256                                 return inst;
 257                         }
 258                         saved_inst = inst[0];
 259                         inst[0] = inst[-1];
 260                         inst[-1] = saved_inst ^ invert_branch(jump->flags);
 261                         jump->addr -= 2 * sizeof(sljit_ins);
 262                         return inst;
 263                 }
 264         }
 265         else {
 266                 diff = ((sljit_sw)target_addr - (sljit_sw)(inst + 1)) >> 2;
 267                 if (diff <= SIMM_MAX && diff >= SIMM_MIN) {
 268                         jump->flags |= PATCH_B;
 269
 270                         if (!(jump->flags & IS_COND)) {
 271                                 inst[0] = (jump->flags & IS_JAL) ? BAL : B;
 272                                 inst[1] = NOP;
 273                                 return inst + 1;
 274                         }
 275                         inst[0] = inst[0] ^ invert_branch(jump->flags);
 276                         inst[1] = NOP;
 277                         jump->addr -= sizeof(sljit_ins);
 278                         return inst + 1;
 279                 }
 280         }
 281
 282         if (jump->flags & IS_COND) {
 283                 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == ((jump->addr + 2 * sizeof(sljit_ins)) & ~0xfffffff)) {
 284                         jump->flags |= PATCH_J;
 285                         saved_inst = inst[0];
 286                         inst[0] = inst[-1];
 287                         inst[-1] = (saved_inst & 0xffff0000) | 3;
 288                         inst[1] = J;
 289                         inst[2] = NOP;
 290                         return inst + 2;
 291                 }
 292                 else if ((target_addr & ~0xfffffff) == ((jump->addr + 3 * sizeof(sljit_ins)) & ~0xfffffff)) {
 293                         jump->flags |= PATCH_J;
 294                         inst[0] = (inst[0] & 0xffff0000) | 3;
 295                         inst[1] = NOP;
 296                         inst[2] = J;
 297                         inst[3] = NOP;
 298                         jump->addr += sizeof(sljit_ins);
 299                         return inst + 3;
 300                 }
 301         }
 302         else {
 303                 /* J instuctions. */
 304                 if ((jump->flags & IS_MOVABLE) && (target_addr & ~0xfffffff) == (jump->addr & ~0xfffffff)) {
 305                         jump->flags |= PATCH_J;
 306                         inst[0] = inst[-1];
 307                         inst[-1] = (jump->flags & IS_JAL) ? JAL : J;
 308                         jump->addr -= sizeof(sljit_ins);
 309                         return inst;
 310                 }
 311
 312                 if ((target_addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff)) {
 313                         jump->flags |= PATCH_J;
 314                         inst[0] = (jump->flags & IS_JAL) ? JAL : J;
 315                         inst[1] = NOP;
 316                         return inst + 1;
 317                 }
 318         }
 319
 320 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 321 keep_address:
 322         if (target_addr <= 0x7fffffff) {
 323                 jump->flags |= PATCH_ABS32;
 324                 if (jump->flags & IS_COND) {
 325                         inst[0] -= 4;
 326                         inst++;
 327                 }
 328                 inst[2] = inst[6];
 329                 inst[3] = inst[7];
 330                 return inst + 3;
 331         }
 332         if (target_addr <= 0x7fffffffffffl) {
 333                 jump->flags |= PATCH_ABS48;
 334                 if (jump->flags & IS_COND) {
 335                         inst[0] -= 2;
 336                         inst++;
 337                 }
 338                 inst[4] = inst[6];
 339                 inst[5] = inst[7];
 340                 return inst + 5;
 341         }
 342 #endif
 343
 344         return code_ptr;
 345 }
 346
 347 #ifdef __GNUC__
 348 static __attribute__ ((noinline)) void sljit_cache_flush(void* code, void* code_ptr)
 349 {
 350         SLJIT_CACHE_FLUSH(code, code_ptr);
 351 }
 352 #endif
 353
 354 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
 355 {
 356         struct sljit_memory_fragment *buf;
 357         sljit_ins *code;
 358         sljit_ins *code_ptr;
 359         sljit_ins *buf_ptr;
 360         sljit_ins *buf_end;
 361         sljit_uw word_count;
 362         sljit_uw addr;
 363
 364         struct sljit_label *label;
 365         struct sljit_jump *jump;
 366         struct sljit_const *const_;
 367
 368         CHECK_ERROR_PTR();
 369         check_sljit_generate_code(compiler);
 370         reverse_buf(compiler);
 371
 372         code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins));
 373         PTR_FAIL_WITH_EXEC_IF(code);
 374         buf = compiler->buf;
 375
 376         code_ptr = code;
 377         word_count = 0;
 378         label = compiler->labels;
 379         jump = compiler->jumps;
 380         const_ = compiler->consts;
 381         do {
 382                 buf_ptr = (sljit_ins*)buf->memory;
 383                 buf_end = buf_ptr + (buf->used_size >> 2);
 384                 do {
 385                         *code_ptr = *buf_ptr++;
 386                         SLJIT_ASSERT(!label || label->size >= word_count);
 387                         SLJIT_ASSERT(!jump || jump->addr >= word_count);
 388                         SLJIT_ASSERT(!const_ || const_->addr >= word_count);
 389                         /* These structures are ordered by their address. */
 390                         if (label && label->size == word_count) {
 391                                 /* Just recording the address. */
 392                                 label->addr = (sljit_uw)code_ptr;
 393                                 label->size = code_ptr - code;
 394                                 label = label->next;
 395                         }
 396                         if (jump && jump->addr == word_count) {
 397 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 398                                 jump->addr = (sljit_uw)(code_ptr - 3);
 399 #else
 400                                 jump->addr = (sljit_uw)(code_ptr - 7);
 401 #endif
 402                                 code_ptr = detect_jump_type(jump, code_ptr, code);
 403                                 jump = jump->next;
 404                         }
 405                         if (const_ && const_->addr == word_count) {
 406                                 /* Just recording the address. */
 407                                 const_->addr = (sljit_uw)code_ptr;
 408                                 const_ = const_->next;
 409                         }
 410                         code_ptr ++;
 411                         word_count ++;
 412                 } while (buf_ptr < buf_end);
 413
 414                 buf = buf->next;
 415         } while (buf);
 416
 417         if (label && label->size == word_count) {
 418                 label->addr = (sljit_uw)code_ptr;
 419                 label->size = code_ptr - code;
 420                 label = label->next;
 421         }
 422
 423         SLJIT_ASSERT(!label);
 424         SLJIT_ASSERT(!jump);
 425         SLJIT_ASSERT(!const_);
 426         SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
 427
 428         jump = compiler->jumps;
 429         while (jump) {
 430                 do {
 431                         addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target;
 432                         buf_ptr = (sljit_ins*)jump->addr;
 433
 434                         if (jump->flags & PATCH_B) {
 435                                 addr = (sljit_sw)(addr - (jump->addr + sizeof(sljit_ins))) >> 2;
 436                                 SLJIT_ASSERT((sljit_sw)addr <= SIMM_MAX && (sljit_sw)addr >= SIMM_MIN);
 437                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | (addr & 0xffff);
 438                                 break;
 439                         }
 440                         if (jump->flags & PATCH_J) {
 441                                 SLJIT_ASSERT((addr & ~0xfffffff) == ((jump->addr + sizeof(sljit_ins)) & ~0xfffffff));
 442                                 buf_ptr[0] |= (addr >> 2) & 0x03ffffff;
 443                                 break;
 444                         }
 445
 446                         /* Set the fields of immediate loads. */
 447 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 448                         buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
 449                         buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
 450 #else
 451                         if (jump->flags & PATCH_ABS32) {
 452                                 SLJIT_ASSERT(addr <= 0x7fffffff);
 453                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 16) & 0xffff);
 454                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | (addr & 0xffff);
 455                         }
 456                         else if (jump->flags & PATCH_ABS48) {
 457                                 SLJIT_ASSERT(addr <= 0x7fffffffffffl);
 458                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 32) & 0xffff);
 459                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 16) & 0xffff);
 460                                 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | (addr & 0xffff);
 461                         }
 462                         else {
 463                                 buf_ptr[0] = (buf_ptr[0] & 0xffff0000) | ((addr >> 48) & 0xffff);
 464                                 buf_ptr[1] = (buf_ptr[1] & 0xffff0000) | ((addr >> 32) & 0xffff);
 465                                 buf_ptr[3] = (buf_ptr[3] & 0xffff0000) | ((addr >> 16) & 0xffff);
 466                                 buf_ptr[5] = (buf_ptr[5] & 0xffff0000) | (addr & 0xffff);
 467                         }
 468 #endif
 469                 } while (0);
 470                 jump = jump->next;
 471         }
 472
 473         compiler->error = SLJIT_ERR_COMPILED;
 474         compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins);
 475 #ifndef __GNUC__
 476         SLJIT_CACHE_FLUSH(code, code_ptr);
 477 #else
 478         /* GCC workaround for invalid code generation with -O2. */
 479         sljit_cache_flush(code, code_ptr);
 480 #endif
 481         return code;
 482 }
 483
 484 /* --------------------------------------------------------------------- */
 485 /*  Entry, exit                                                          */
 486 /* --------------------------------------------------------------------- */
 487
 488 /* Creates an index in data_transfer_insts array. */
 489 #define LOAD_DATA       0x01
 490 #define WORD_DATA       0x00
 491 #define BYTE_DATA       0x02
 492 #define HALF_DATA       0x04
 493 #define INT_DATA        0x06
 494 #define SIGNED_DATA     0x08
 495 /* Separates integer and floating point registers */
 496 #define GPR_REG         0x0f
 497 #define DOUBLE_DATA     0x10
 498
 499 #define MEM_MASK        0x1f
 500
 501 #define WRITE_BACK      0x00020
 502 #define ARG_TEST        0x00040
 503 #define ALT_KEEP_CACHE  0x00080
 504 #define CUMULATIVE_OP   0x00100
 505 #define LOGICAL_OP      0x00200
 506 #define IMM_OP          0x00400
 507 #define SRC2_IMM        0x00800
 508
 509 #define UNUSED_DEST     0x01000
 510 #define REG_DEST        0x02000
 511 #define REG1_SOURCE     0x04000
 512 #define REG2_SOURCE     0x08000
 513 #define SLOW_SRC1       0x10000
 514 #define SLOW_SRC2       0x20000
 515 #define SLOW_DEST       0x40000
 516
 517 /* Only these flags are set. UNUSED_DEST is not set when no flags should be set. */
 518 #define CHECK_FLAGS(list) \
 519         (!(flags & UNUSED_DEST) || (op & GET_FLAGS(~(list))))
 520
 521 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 522 #define STACK_STORE     SW
 523 #define STACK_LOAD      LW
 524 #else
 525 #define STACK_STORE     SD
 526 #define STACK_LOAD      LD
 527 #endif
 528
 529 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 530 #include "sljitNativeMIPS_32.c"
 531 #else
 532 #include "sljitNativeMIPS_64.c"
 533 #endif
 534
 535 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
 536 {
 537         sljit_ins base;
 538
 539         CHECK_ERROR();
 540         check_sljit_emit_enter(compiler, args, scratches, saveds, local_size);
 541
 542         compiler->scratches = scratches;
 543         compiler->saveds = saveds;
 544 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 545         compiler->logical_local_size = local_size;
 546 #endif
 547
 548         local_size += (saveds + 1 + 4) * sizeof(sljit_sw);
 549 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 550         local_size = (local_size + 15) & ~0xf;
 551 #else
 552         local_size = (local_size + 31) & ~0x1f;
 553 #endif
 554         compiler->local_size = local_size;
 555
 556         if (local_size <= SIMM_MAX) {
 557                 /* Frequent case. */
 558                 FAIL_IF(push_inst(compiler, ADDIU_W | S(SLJIT_LOCALS_REG) | T(SLJIT_LOCALS_REG) | IMM(-local_size), DR(SLJIT_LOCALS_REG)));
 559                 base = S(SLJIT_LOCALS_REG);
 560         }
 561         else {
 562                 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
 563                 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_LOCALS_REG) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
 564                 FAIL_IF(push_inst(compiler, SUBU_W | S(SLJIT_LOCALS_REG) | T(TMP_REG1) | D(SLJIT_LOCALS_REG), DR(SLJIT_LOCALS_REG)));
 565                 base = S(TMP_REG2);
 566                 local_size = 0;
 567         }
 568
 569         FAIL_IF(push_inst(compiler, STACK_STORE | base | TA(RETURN_ADDR_REG) | IMM(local_size - 1 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 570         if (saveds >= 1)
 571                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_SAVED_REG1) | IMM(local_size - 2 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 572         if (saveds >= 2)
 573                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_SAVED_REG2) | IMM(local_size - 3 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 574         if (saveds >= 3)
 575                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_SAVED_REG3) | IMM(local_size - 4 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 576         if (saveds >= 4)
 577                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_SAVED_EREG1) | IMM(local_size - 5 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 578         if (saveds >= 5)
 579                 FAIL_IF(push_inst(compiler, STACK_STORE | base | T(SLJIT_SAVED_EREG2) | IMM(local_size - 6 * (sljit_si)sizeof(sljit_sw)), MOVABLE_INS));
 580
 581         if (args >= 1)
 582                 FAIL_IF(push_inst(compiler, ADDU_W | SA(4) | TA(0) | D(SLJIT_SAVED_REG1), DR(SLJIT_SAVED_REG1)));
 583         if (args >= 2)
 584                 FAIL_IF(push_inst(compiler, ADDU_W | SA(5) | TA(0) | D(SLJIT_SAVED_REG2), DR(SLJIT_SAVED_REG2)));
 585         if (args >= 3)
 586                 FAIL_IF(push_inst(compiler, ADDU_W | SA(6) | TA(0) | D(SLJIT_SAVED_REG3), DR(SLJIT_SAVED_REG3)));
 587
 588         return SLJIT_SUCCESS;
 589 }
 590
 591 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
 592 {
 593         CHECK_ERROR_VOID();
 594         check_sljit_set_context(compiler, args, scratches, saveds, local_size);
 595
 596         compiler->scratches = scratches;
 597         compiler->saveds = saveds;
 598 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 599         compiler->logical_local_size = local_size;
 600 #endif
 601
 602         local_size += (saveds + 1 + 4) * sizeof(sljit_sw);
 603 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 604         compiler->local_size = (local_size + 15) & ~0xf;
 605 #else
 606         compiler->local_size = (local_size + 31) & ~0x1f;
 607 #endif
 608 }
 609
 610 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
 611 {
 612         sljit_si local_size;
 613         sljit_ins base;
 614
 615         CHECK_ERROR();
 616         check_sljit_emit_return(compiler, op, src, srcw);
 617
 618         FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
 619
 620         local_size = compiler->local_size;
 621         if (local_size <= SIMM_MAX)
 622                 base = S(SLJIT_LOCALS_REG);
 623         else {
 624                 FAIL_IF(load_immediate(compiler, DR(TMP_REG1), local_size));
 625                 FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_LOCALS_REG) | T(TMP_REG1) | D(TMP_REG1), DR(TMP_REG1)));
 626                 base = S(TMP_REG1);
 627                 local_size = 0;
 628         }
 629
 630         FAIL_IF(push_inst(compiler, STACK_LOAD | base | TA(RETURN_ADDR_REG) | IMM(local_size - 1 * (sljit_si)sizeof(sljit_sw)), RETURN_ADDR_REG));
 631         if (compiler->saveds >= 5)
 632                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_SAVED_EREG2) | IMM(local_size - 6 * (sljit_si)sizeof(sljit_sw)), DR(SLJIT_SAVED_EREG2)));
 633         if (compiler->saveds >= 4)
 634                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_SAVED_EREG1) | IMM(local_size - 5 * (sljit_si)sizeof(sljit_sw)), DR(SLJIT_SAVED_EREG1)));
 635         if (compiler->saveds >= 3)
 636                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_SAVED_REG3) | IMM(local_size - 4 * (sljit_si)sizeof(sljit_sw)), DR(SLJIT_SAVED_REG3)));
 637         if (compiler->saveds >= 2)
 638                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_SAVED_REG2) | IMM(local_size - 3 * (sljit_si)sizeof(sljit_sw)), DR(SLJIT_SAVED_REG2)));
 639         if (compiler->saveds >= 1)
 640                 FAIL_IF(push_inst(compiler, STACK_LOAD | base | T(SLJIT_SAVED_REG1) | IMM(local_size - 2 * (sljit_si)sizeof(sljit_sw)), DR(SLJIT_SAVED_REG1)));
 641
 642         FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
 643         if (compiler->local_size <= SIMM_MAX)
 644                 return push_inst(compiler, ADDIU_W | S(SLJIT_LOCALS_REG) | T(SLJIT_LOCALS_REG) | IMM(compiler->local_size), UNMOVABLE_INS);
 645         else
 646                 return push_inst(compiler, ADDU_W | S(TMP_REG1) | TA(0) | D(SLJIT_LOCALS_REG), UNMOVABLE_INS);
 647 }
 648
 649 #undef STACK_STORE
 650 #undef STACK_LOAD
 651
 652 /* --------------------------------------------------------------------- */
 653 /*  Operators                                                            */
 654 /* --------------------------------------------------------------------- */
 655
 656 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 657 #define ARCH_32_64(a, b)        a
 658 #else
 659 #define ARCH_32_64(a, b)        b
 660 #endif
 661
 662 static SLJIT_CONST sljit_ins data_transfer_insts[16 + 4] = {
 663 /* u w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
 664 /* u w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
 665 /* u b s */ HI(40) /* sb */,
 666 /* u b l */ HI(36) /* lbu */,
 667 /* u h s */ HI(41) /* sh */,
 668 /* u h l */ HI(37) /* lhu */,
 669 /* u i s */ HI(43) /* sw */,
 670 /* u i l */ ARCH_32_64(HI(35) /* lw */, HI(39) /* lwu */),
 671
 672 /* s w s */ ARCH_32_64(HI(43) /* sw */, HI(63) /* sd */),
 673 /* s w l */ ARCH_32_64(HI(35) /* lw */, HI(55) /* ld */),
 674 /* s b s */ HI(40) /* sb */,
 675 /* s b l */ HI(32) /* lb */,
 676 /* s h s */ HI(41) /* sh */,
 677 /* s h l */ HI(33) /* lh */,
 678 /* s i s */ HI(43) /* sw */,
 679 /* s i l */ HI(35) /* lw */,
 680
 681 /* d   s */ HI(61) /* sdc1 */,
 682 /* d   l */ HI(53) /* ldc1 */,
 683 /* s   s */ HI(57) /* swc1 */,
 684 /* s   l */ HI(49) /* lwc1 */,
 685 };
 686
 687 #undef ARCH_32_64
 688
 689 /* reg_ar is an absoulute register! */
 690
 691 /* Can perform an operation using at most 1 instruction. */
 692 static sljit_si getput_arg_fast(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw)
 693 {
 694         SLJIT_ASSERT(arg & SLJIT_MEM);
 695
 696         if ((!(flags & WRITE_BACK) || !(arg & REG_MASK)) && !(arg & OFFS_REG_MASK) && argw <= SIMM_MAX && argw >= SIMM_MIN) {
 697                 /* Works for both absoulte and relative addresses. */
 698                 if (SLJIT_UNLIKELY(flags & ARG_TEST))
 699                         return 1;
 700                 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(arg & REG_MASK)
 701                         | TA(reg_ar) | IMM(argw), ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) ? reg_ar : MOVABLE_INS));
 702                 return -1;
 703         }
 704         return 0;
 705 }
 706
 707 /* See getput_arg below.
 708    Note: can_cache is called only for binary operators. Those
 709    operators always uses word arguments without write back. */
 710 static sljit_si can_cache(sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
 711 {
 712         SLJIT_ASSERT((arg & SLJIT_MEM) && (next_arg & SLJIT_MEM));
 713
 714         /* Simple operation except for updates. */
 715         if (arg & OFFS_REG_MASK) {
 716                 argw &= 0x3;
 717                 next_argw &= 0x3;
 718                 if (argw && argw == next_argw && (arg == next_arg || (arg & OFFS_REG_MASK) == (next_arg & OFFS_REG_MASK)))
 719                         return 1;
 720                 return 0;
 721         }
 722
 723         if (arg == next_arg) {
 724                 if (((next_argw - argw) <= SIMM_MAX && (next_argw - argw) >= SIMM_MIN))
 725                         return 1;
 726                 return 0;
 727         }
 728
 729         return 0;
 730 }
 731
 732 /* Emit the necessary instructions. See can_cache above. */
 733 static sljit_si getput_arg(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw, sljit_si next_arg, sljit_sw next_argw)
 734 {
 735         sljit_si tmp_ar, base, delay_slot;
 736
 737         SLJIT_ASSERT(arg & SLJIT_MEM);
 738         if (!(next_arg & SLJIT_MEM)) {
 739                 next_arg = 0;
 740                 next_argw = 0;
 741         }
 742
 743         if ((flags & MEM_MASK) <= GPR_REG && (flags & LOAD_DATA)) {
 744                 tmp_ar = reg_ar;
 745                 delay_slot = reg_ar;
 746         } else {
 747                 tmp_ar = DR(TMP_REG1);
 748                 delay_slot = MOVABLE_INS;
 749         }
 750         base = arg & REG_MASK;
 751
 752         if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
 753                 argw &= 0x3;
 754                 if ((flags & WRITE_BACK) && reg_ar == DR(base)) {
 755                         SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
 756                         FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
 757                         reg_ar = DR(TMP_REG1);
 758                 }
 759
 760                 /* Using the cache. */
 761                 if (argw == compiler->cache_argw) {
 762                         if (!(flags & WRITE_BACK)) {
 763                                 if (arg == compiler->cache_arg)
 764                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 765                                 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
 766                                         if (arg == next_arg && argw == (next_argw & 0x3)) {
 767                                                 compiler->cache_arg = arg;
 768                                                 compiler->cache_argw = argw;
 769                                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
 770                                                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 771                                         }
 772                                         FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | DA(tmp_ar), tmp_ar));
 773                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 774                                 }
 775                         }
 776                         else {
 777                                 if ((SLJIT_MEM | (arg & OFFS_REG_MASK)) == compiler->cache_arg) {
 778                                         FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 779                                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 780                                 }
 781                         }
 782                 }
 783
 784                 if (SLJIT_UNLIKELY(argw)) {
 785                         compiler->cache_arg = SLJIT_MEM | (arg & OFFS_REG_MASK);
 786                         compiler->cache_argw = argw;
 787                         FAIL_IF(push_inst(compiler, SLL_W | T(OFFS_REG(arg)) | D(TMP_REG3) | SH_IMM(argw), DR(TMP_REG3)));
 788                 }
 789
 790                 if (!(flags & WRITE_BACK)) {
 791                         if (arg == next_arg && argw == (next_argw & 0x3)) {
 792                                 compiler->cache_arg = arg;
 793                                 compiler->cache_argw = argw;
 794                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(TMP_REG3), DR(TMP_REG3)));
 795                                 tmp_ar = DR(TMP_REG3);
 796                         }
 797                         else
 798                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | DA(tmp_ar), tmp_ar));
 799                         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 800                 }
 801                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(!argw ? OFFS_REG(arg) : TMP_REG3) | D(base), DR(base)));
 802                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 803         }
 804
 805         if (SLJIT_UNLIKELY(flags & WRITE_BACK) && base) {
 806                 /* Update only applies if a base register exists. */
 807                 if (reg_ar == DR(base)) {
 808                         SLJIT_ASSERT(!(flags & LOAD_DATA) && DR(TMP_REG1) != reg_ar);
 809                         if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
 810                                 FAIL_IF(push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar) | IMM(argw), MOVABLE_INS));
 811                                 if (argw)
 812                                         return push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base));
 813                                 return SLJIT_SUCCESS;
 814                         }
 815                         FAIL_IF(push_inst(compiler, ADDU_W | SA(reg_ar) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
 816                         reg_ar = DR(TMP_REG1);
 817                 }
 818
 819                 if (argw <= SIMM_MAX && argw >= SIMM_MIN) {
 820                         if (argw)
 821                                 FAIL_IF(push_inst(compiler, ADDIU_W | S(base) | T(base) | IMM(argw), DR(base)));
 822                 }
 823                 else {
 824                         if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 825                                 if (argw != compiler->cache_argw) {
 826                                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 827                                         compiler->cache_argw = argw;
 828                                 }
 829                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 830                         }
 831                         else {
 832                                 compiler->cache_arg = SLJIT_MEM;
 833                                 compiler->cache_argw = argw;
 834                                 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
 835                                 FAIL_IF(push_inst(compiler, ADDU_W | S(base) | T(TMP_REG3) | D(base), DR(base)));
 836                         }
 837                 }
 838                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(base) | TA(reg_ar), delay_slot);
 839         }
 840
 841         if (compiler->cache_arg == arg && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 842                 if (argw != compiler->cache_argw) {
 843                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 844                         compiler->cache_argw = argw;
 845                 }
 846                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 847         }
 848
 849         if (compiler->cache_arg == SLJIT_MEM && argw - compiler->cache_argw <= SIMM_MAX && argw - compiler->cache_argw >= SIMM_MIN) {
 850                 if (argw != compiler->cache_argw)
 851                         FAIL_IF(push_inst(compiler, ADDIU_W | S(TMP_REG3) | T(TMP_REG3) | IMM(argw - compiler->cache_argw), DR(TMP_REG3)));
 852         }
 853         else {
 854                 compiler->cache_arg = SLJIT_MEM;
 855                 FAIL_IF(load_immediate(compiler, DR(TMP_REG3), argw));
 856         }
 857         compiler->cache_argw = argw;
 858
 859         if (!base)
 860                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 861
 862         if (arg == next_arg && next_argw - argw <= SIMM_MAX && next_argw - argw >= SIMM_MIN) {
 863                 compiler->cache_arg = arg;
 864                 FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | D(TMP_REG3), DR(TMP_REG3)));
 865                 return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | S(TMP_REG3) | TA(reg_ar), delay_slot);
 866         }
 867
 868         FAIL_IF(push_inst(compiler, ADDU_W | S(TMP_REG3) | T(base) | DA(tmp_ar), tmp_ar));
 869         return push_inst(compiler, data_transfer_insts[flags & MEM_MASK] | SA(tmp_ar) | TA(reg_ar), delay_slot);
 870 }
 871
 872 static SLJIT_INLINE sljit_si emit_op_mem(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg_ar, sljit_si arg, sljit_sw argw)
 873 {
 874         if (getput_arg_fast(compiler, flags, reg_ar, arg, argw))
 875                 return compiler->error;
 876         compiler->cache_arg = 0;
 877         compiler->cache_argw = 0;
 878         return getput_arg(compiler, flags, reg_ar, arg, argw, 0, 0);
 879 }
 880
 881 static SLJIT_INLINE sljit_si emit_op_mem2(struct sljit_compiler *compiler, sljit_si flags, sljit_si reg, sljit_si arg1, sljit_sw arg1w, sljit_si arg2, sljit_sw arg2w)
 882 {
 883         if (getput_arg_fast(compiler, flags, reg, arg1, arg1w))
 884                 return compiler->error;
 885         return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w);
 886 }
 887
 888 static sljit_si emit_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
 889         sljit_si dst, sljit_sw dstw,
 890         sljit_si src1, sljit_sw src1w,
 891         sljit_si src2, sljit_sw src2w)
 892 {
 893         /* arg1 goes to TMP_REG1 or src reg
 894            arg2 goes to TMP_REG2, imm or src reg
 895            TMP_REG3 can be used for caching
 896            result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */
 897         sljit_si dst_r = TMP_REG2;
 898         sljit_si src1_r;
 899         sljit_sw src2_r = 0;
 900         sljit_si sugg_src2_r = TMP_REG2;
 901
 902         if (!(flags & ALT_KEEP_CACHE)) {
 903                 compiler->cache_arg = 0;
 904                 compiler->cache_argw = 0;
 905         }
 906
 907         if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) {
 908                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM))
 909                         return SLJIT_SUCCESS;
 910                 if (GET_FLAGS(op))
 911                         flags |= UNUSED_DEST;
 912         }
 913         else if (FAST_IS_REG(dst)) {
 914                 dst_r = dst;
 915                 flags |= REG_DEST;
 916                 if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
 917                         sugg_src2_r = dst_r;
 918         }
 919         else if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, flags | ARG_TEST, DR(TMP_REG1), dst, dstw))
 920                 flags |= SLOW_DEST;
 921
 922         if (flags & IMM_OP) {
 923                 if ((src2 & SLJIT_IMM) && src2w) {
 924                         if ((!(flags & LOGICAL_OP) && (src2w <= SIMM_MAX && src2w >= SIMM_MIN))
 925                                 || ((flags & LOGICAL_OP) && !(src2w & ~UIMM_MAX))) {
 926                                 flags |= SRC2_IMM;
 927                                 src2_r = src2w;
 928                         }
 929                 }
 930                 if (!(flags & SRC2_IMM) && (flags & CUMULATIVE_OP) && (src1 & SLJIT_IMM) && src1w) {
 931                         if ((!(flags & LOGICAL_OP) && (src1w <= SIMM_MAX && src1w >= SIMM_MIN))
 932                                 || ((flags & LOGICAL_OP) && !(src1w & ~UIMM_MAX))) {
 933                                 flags |= SRC2_IMM;
 934                                 src2_r = src1w;
 935
 936                                 /* And swap arguments. */
 937                                 src1 = src2;
 938                                 src1w = src2w;
 939                                 src2 = SLJIT_IMM;
 940                                 /* src2w = src2_r unneeded. */
 941                         }
 942                 }
 943         }
 944
 945         /* Source 1. */
 946         if (FAST_IS_REG(src1)) {
 947                 src1_r = src1;
 948                 flags |= REG1_SOURCE;
 949         }
 950         else if (src1 & SLJIT_IMM) {
 951                 if (src1w) {
 952                         FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w));
 953                         src1_r = TMP_REG1;
 954                 }
 955                 else
 956                         src1_r = 0;
 957         }
 958         else {
 959                 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w))
 960                         FAIL_IF(compiler->error);
 961                 else
 962                         flags |= SLOW_SRC1;
 963                 src1_r = TMP_REG1;
 964         }
 965
 966         /* Source 2. */
 967         if (FAST_IS_REG(src2)) {
 968                 src2_r = src2;
 969                 flags |= REG2_SOURCE;
 970                 if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI)
 971                         dst_r = src2_r;
 972         }
 973         else if (src2 & SLJIT_IMM) {
 974                 if (!(flags & SRC2_IMM)) {
 975                         if (src2w) {
 976                                 FAIL_IF(load_immediate(compiler, DR(sugg_src2_r), src2w));
 977                                 src2_r = sugg_src2_r;
 978                         }
 979                         else {
 980                                 src2_r = 0;
 981                                 if ((op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) && (dst & SLJIT_MEM))
 982                                         dst_r = 0;
 983                         }
 984                 }
 985         }
 986         else {
 987                 if (getput_arg_fast(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w))
 988                         FAIL_IF(compiler->error);
 989                 else
 990                         flags |= SLOW_SRC2;
 991                 src2_r = sugg_src2_r;
 992         }
 993
 994         if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
 995                 SLJIT_ASSERT(src2_r == TMP_REG2);
 996                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
 997                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, src1, src1w));
 998                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
 999                 }
1000                 else {
1001                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, src2, src2w));
1002                         FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG2), src2, src2w, dst, dstw));
1003                 }
1004         }
1005         else if (flags & SLOW_SRC1)
1006                 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(TMP_REG1), src1, src1w, dst, dstw));
1007         else if (flags & SLOW_SRC2)
1008                 FAIL_IF(getput_arg(compiler, flags | LOAD_DATA, DR(sugg_src2_r), src2, src2w, dst, dstw));
1009
1010         FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r));
1011
1012         if (dst & SLJIT_MEM) {
1013                 if (!(flags & SLOW_DEST)) {
1014                         getput_arg_fast(compiler, flags, DR(dst_r), dst, dstw);
1015                         return compiler->error;
1016                 }
1017                 return getput_arg(compiler, flags, DR(dst_r), dst, dstw, 0, 0);
1018         }
1019
1020         return SLJIT_SUCCESS;
1021 }
1022
1023 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op0(struct sljit_compiler *compiler, sljit_si op)
1024 {
1025 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1026         sljit_si int_op = op & SLJIT_INT_OP;
1027 #endif
1028
1029         CHECK_ERROR();
1030         check_sljit_emit_op0(compiler, op);
1031
1032         op = GET_OPCODE(op);
1033         switch (op) {
1034         case SLJIT_BREAKPOINT:
1035                 return push_inst(compiler, BREAK, UNMOVABLE_INS);
1036         case SLJIT_NOP:
1037                 return push_inst(compiler, NOP, UNMOVABLE_INS);
1038         case SLJIT_UMUL:
1039         case SLJIT_SMUL:
1040 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1041                 FAIL_IF(push_inst(compiler, (op == SLJIT_UMUL ? DMULTU : DMULT) | S(SLJIT_SCRATCH_REG1) | T(SLJIT_SCRATCH_REG2), MOVABLE_INS));
1042 #else
1043                 FAIL_IF(push_inst(compiler, (op == SLJIT_UMUL ? MULTU : MULT) | S(SLJIT_SCRATCH_REG1) | T(SLJIT_SCRATCH_REG2), MOVABLE_INS));
1044 #endif
1045                 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_SCRATCH_REG1), DR(SLJIT_SCRATCH_REG1)));
1046                 return push_inst(compiler, MFHI | D(SLJIT_SCRATCH_REG2), DR(SLJIT_SCRATCH_REG2));
1047         case SLJIT_UDIV:
1048         case SLJIT_SDIV:
1049 #if !(defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
1050                 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1051                 FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1052 #endif
1053
1054 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1055                 if (int_op)
1056                         FAIL_IF(push_inst(compiler, (op == SLJIT_UDIV ? DIVU : DIV) | S(SLJIT_SCRATCH_REG1) | T(SLJIT_SCRATCH_REG2), MOVABLE_INS));
1057                 else
1058                         FAIL_IF(push_inst(compiler, (op == SLJIT_UDIV ? DDIVU : DDIV) | S(SLJIT_SCRATCH_REG1) | T(SLJIT_SCRATCH_REG2), MOVABLE_INS));
1059 #else
1060                 FAIL_IF(push_inst(compiler, (op == SLJIT_UDIV ? DIVU : DIV) | S(SLJIT_SCRATCH_REG1) | T(SLJIT_SCRATCH_REG2), MOVABLE_INS));
1061 #endif
1062
1063                 FAIL_IF(push_inst(compiler, MFLO | D(SLJIT_SCRATCH_REG1), DR(SLJIT_SCRATCH_REG1)));
1064                 return push_inst(compiler, MFHI | D(SLJIT_SCRATCH_REG2), DR(SLJIT_SCRATCH_REG2));
1065         }
1066
1067         return SLJIT_SUCCESS;
1068 }
1069
1070 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op1(struct sljit_compiler *compiler, sljit_si op,
1071         sljit_si dst, sljit_sw dstw,
1072         sljit_si src, sljit_sw srcw)
1073 {
1074 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1075 #       define flags 0
1076 #else
1077         sljit_si flags = 0;
1078 #endif
1079
1080         CHECK_ERROR();
1081         check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
1082         ADJUST_LOCAL_OFFSET(dst, dstw);
1083         ADJUST_LOCAL_OFFSET(src, srcw);
1084
1085 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1086         if ((op & SLJIT_INT_OP) && GET_OPCODE(op) >= SLJIT_NOT) {
1087                 flags |= INT_DATA | SIGNED_DATA;
1088                 if (src & SLJIT_IMM)
1089                         srcw = (sljit_si)srcw;
1090         }
1091 #endif
1092
1093         switch (GET_OPCODE(op)) {
1094         case SLJIT_MOV:
1095         case SLJIT_MOV_P:
1096                 return emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1097
1098         case SLJIT_MOV_UI:
1099 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1100                 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1101 #else
1102                 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ui)srcw : srcw);
1103 #endif
1104
1105         case SLJIT_MOV_SI:
1106 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1107                 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, srcw);
1108 #else
1109                 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_si)srcw : srcw);
1110 #endif
1111
1112         case SLJIT_MOV_UB:
1113                 return emit_op(compiler, SLJIT_MOV_UB, BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1114
1115         case SLJIT_MOV_SB:
1116                 return emit_op(compiler, SLJIT_MOV_SB, BYTE_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1117
1118         case SLJIT_MOV_UH:
1119                 return emit_op(compiler, SLJIT_MOV_UH, HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1120
1121         case SLJIT_MOV_SH:
1122                 return emit_op(compiler, SLJIT_MOV_SH, HALF_DATA | SIGNED_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1123
1124         case SLJIT_MOVU:
1125         case SLJIT_MOVU_P:
1126                 return emit_op(compiler, SLJIT_MOV, WORD_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1127
1128         case SLJIT_MOVU_UI:
1129 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1130                 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1131 #else
1132                 return emit_op(compiler, SLJIT_MOV_UI, INT_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ui)srcw : srcw);
1133 #endif
1134
1135         case SLJIT_MOVU_SI:
1136 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1137                 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw);
1138 #else
1139                 return emit_op(compiler, SLJIT_MOV_SI, INT_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_si)srcw : srcw);
1140 #endif
1141
1142         case SLJIT_MOVU_UB:
1143                 return emit_op(compiler, SLJIT_MOV_UB, BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_ub)srcw : srcw);
1144
1145         case SLJIT_MOVU_SB:
1146                 return emit_op(compiler, SLJIT_MOV_SB, BYTE_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sb)srcw : srcw);
1147
1148         case SLJIT_MOVU_UH:
1149                 return emit_op(compiler, SLJIT_MOV_UH, HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_uh)srcw : srcw);
1150
1151         case SLJIT_MOVU_SH:
1152                 return emit_op(compiler, SLJIT_MOV_SH, HALF_DATA | SIGNED_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (sljit_sh)srcw : srcw);
1153
1154         case SLJIT_NOT:
1155                 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1156
1157         case SLJIT_NEG:
1158                 return emit_op(compiler, SLJIT_SUB | GET_ALL_FLAGS(op), flags | IMM_OP, dst, dstw, SLJIT_IMM, 0, src, srcw);
1159
1160         case SLJIT_CLZ:
1161                 return emit_op(compiler, op, flags, dst, dstw, TMP_REG1, 0, src, srcw);
1162         }
1163
1164         return SLJIT_SUCCESS;
1165
1166 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1167 #       undef flags
1168 #endif
1169 }
1170
1171 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op2(struct sljit_compiler *compiler, sljit_si op,
1172         sljit_si dst, sljit_sw dstw,
1173         sljit_si src1, sljit_sw src1w,
1174         sljit_si src2, sljit_sw src2w)
1175 {
1176 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1177 #       define flags 0
1178 #else
1179         sljit_si flags = 0;
1180 #endif
1181
1182         CHECK_ERROR();
1183         check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1184         ADJUST_LOCAL_OFFSET(dst, dstw);
1185         ADJUST_LOCAL_OFFSET(src1, src1w);
1186         ADJUST_LOCAL_OFFSET(src2, src2w);
1187
1188 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1189         if (op & SLJIT_INT_OP) {
1190                 flags |= INT_DATA | SIGNED_DATA;
1191                 if (src1 & SLJIT_IMM)
1192                         src1w = (sljit_si)src1w;
1193                 if (src2 & SLJIT_IMM)
1194                         src2w = (sljit_si)src2w;
1195         }
1196 #endif
1197
1198         switch (GET_OPCODE(op)) {
1199         case SLJIT_ADD:
1200         case SLJIT_ADDC:
1201                 return emit_op(compiler, op, flags | CUMULATIVE_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1202
1203         case SLJIT_SUB:
1204         case SLJIT_SUBC:
1205                 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1206
1207         case SLJIT_MUL:
1208                 return emit_op(compiler, op, flags | CUMULATIVE_OP, dst, dstw, src1, src1w, src2, src2w);
1209
1210         case SLJIT_AND:
1211         case SLJIT_OR:
1212         case SLJIT_XOR:
1213                 return emit_op(compiler, op, flags | CUMULATIVE_OP | LOGICAL_OP | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1214
1215         case SLJIT_SHL:
1216         case SLJIT_LSHR:
1217         case SLJIT_ASHR:
1218 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1219                 if (src2 & SLJIT_IMM)
1220                         src2w &= 0x1f;
1221 #else
1222                 if (src2 & SLJIT_IMM) {
1223                         if (op & SLJIT_INT_OP)
1224                                 src2w &= 0x1f;
1225                         else
1226                                 src2w &= 0x3f;
1227                 }
1228 #endif
1229                 return emit_op(compiler, op, flags | IMM_OP, dst, dstw, src1, src1w, src2, src2w);
1230         }
1231
1232         return SLJIT_SUCCESS;
1233
1234 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1235 #       undef flags
1236 #endif
1237 }
1238
1239 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_register_index(sljit_si reg)
1240 {
1241         check_sljit_get_register_index(reg);
1242         return reg_map[reg];
1243 }
1244
1245 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_get_float_register_index(sljit_si reg)
1246 {
1247         check_sljit_get_float_register_index(reg);
1248         return reg << 1;
1249 }
1250
1251 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_custom(struct sljit_compiler *compiler,
1252         void *instruction, sljit_si size)
1253 {
1254         CHECK_ERROR();
1255         check_sljit_emit_op_custom(compiler, instruction, size);
1256         SLJIT_ASSERT(size == 4);
1257
1258         return push_inst(compiler, *(sljit_ins*)instruction, UNMOVABLE_INS);
1259 }
1260
1261 /* --------------------------------------------------------------------- */
1262 /*  Floating point operators                                             */
1263 /* --------------------------------------------------------------------- */
1264
1265 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_is_fpu_available(void)
1266 {
1267 #ifdef SLJIT_IS_FPU_AVAILABLE
1268         return SLJIT_IS_FPU_AVAILABLE;
1269 #elif defined(__GNUC__)
1270         sljit_sw fir;
1271         asm ("cfc1 %0, $0" : "=r"(fir));
1272         return (fir >> 22) & 0x1;
1273 #else
1274 #error "FIR check is not implemented for this architecture"
1275 #endif
1276 }
1277
1278 #define FLOAT_DATA(op) (DOUBLE_DATA | ((op & SLJIT_SINGLE_OP) >> 7))
1279 #define FMT(op) (((op & SLJIT_SINGLE_OP) ^ SLJIT_SINGLE_OP) << (21 - 8))
1280
1281 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop1(struct sljit_compiler *compiler, sljit_si op,
1282         sljit_si dst, sljit_sw dstw,
1283         sljit_si src, sljit_sw srcw)
1284 {
1285         sljit_si dst_fr;
1286
1287         CHECK_ERROR();
1288         check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
1289         SLJIT_COMPILE_ASSERT((SLJIT_SINGLE_OP == 0x100) && !(DOUBLE_DATA & 0x2), float_transfer_bit_error);
1290
1291         compiler->cache_arg = 0;
1292         compiler->cache_argw = 0;
1293
1294         if (GET_OPCODE(op) == SLJIT_CMPD) {
1295                 if (dst & SLJIT_MEM) {
1296                         FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, dst, dstw, src, srcw));
1297                         dst = TMP_FREG1;
1298                 }
1299                 else
1300                         dst <<= 1;
1301
1302                 if (src & SLJIT_MEM) {
1303                         FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src, srcw, 0, 0));
1304                         src = TMP_FREG2;
1305                 }
1306                 else
1307                         src <<= 1;
1308
1309                 /* src and dst are swapped. */
1310                 if (op & SLJIT_SET_E) {
1311                         FAIL_IF(push_inst(compiler, C_UEQ_fmt | FMT(op) | FT(src) | FS(dst), UNMOVABLE_INS));
1312                         FAIL_IF(push_inst(compiler, CFC1 | TA(EQUAL_FLAG) | DA(FCSR_REG), EQUAL_FLAG));
1313                         FAIL_IF(push_inst(compiler, SRL | TA(EQUAL_FLAG) | DA(EQUAL_FLAG) | SH_IMM(23), EQUAL_FLAG));
1314                         FAIL_IF(push_inst(compiler, ANDI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG));
1315                 }
1316                 if (op & SLJIT_SET_S) {
1317                         /* Mixing the instructions for the two checks. */
1318                         FAIL_IF(push_inst(compiler, C_ULT_fmt | FMT(op) | FT(src) | FS(dst), UNMOVABLE_INS));
1319                         FAIL_IF(push_inst(compiler, CFC1 | TA(ULESS_FLAG) | DA(FCSR_REG), ULESS_FLAG));
1320                         FAIL_IF(push_inst(compiler, C_ULT_fmt | FMT(op) | FT(dst) | FS(src), UNMOVABLE_INS));
1321                         FAIL_IF(push_inst(compiler, SRL | TA(ULESS_FLAG) | DA(ULESS_FLAG) | SH_IMM(23), ULESS_FLAG));
1322                         FAIL_IF(push_inst(compiler, ANDI | SA(ULESS_FLAG) | TA(ULESS_FLAG) | IMM(1), ULESS_FLAG));
1323                         FAIL_IF(push_inst(compiler, CFC1 | TA(UGREATER_FLAG) | DA(FCSR_REG), UGREATER_FLAG));
1324                         FAIL_IF(push_inst(compiler, SRL | TA(UGREATER_FLAG) | DA(UGREATER_FLAG) | SH_IMM(23), UGREATER_FLAG));
1325                         FAIL_IF(push_inst(compiler, ANDI | SA(UGREATER_FLAG) | TA(UGREATER_FLAG) | IMM(1), UGREATER_FLAG));
1326                 }
1327                 return push_inst(compiler, C_UN_fmt | FMT(op) | FT(src) | FS(dst), FCSR_FCC);
1328         }
1329
1330         dst_fr = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG1;
1331
1332         if (src & SLJIT_MEM) {
1333                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op) | LOAD_DATA, dst_fr, src, srcw, dst, dstw));
1334                 src = dst_fr;
1335         }
1336         else
1337                 src <<= 1;
1338
1339         switch (GET_OPCODE(op)) {
1340                 case SLJIT_MOVD:
1341                         if (src != dst_fr && dst_fr != TMP_FREG1)
1342                                 FAIL_IF(push_inst(compiler, MOV_fmt | FMT(op) | FS(src) | FD(dst_fr), MOVABLE_INS));
1343                         break;
1344                 case SLJIT_NEGD:
1345                         FAIL_IF(push_inst(compiler, NEG_fmt | FMT(op) | FS(src) | FD(dst_fr), MOVABLE_INS));
1346                         break;
1347                 case SLJIT_ABSD:
1348                         FAIL_IF(push_inst(compiler, ABS_fmt | FMT(op) | FS(src) | FD(dst_fr), MOVABLE_INS));
1349                         break;
1350         }
1351
1352         if (dst_fr == TMP_FREG1) {
1353                 if (GET_OPCODE(op) == SLJIT_MOVD)
1354                         dst_fr = src;
1355                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), dst_fr, dst, dstw, 0, 0));
1356         }
1357
1358         return SLJIT_SUCCESS;
1359 }
1360
1361 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fop2(struct sljit_compiler *compiler, sljit_si op,
1362         sljit_si dst, sljit_sw dstw,
1363         sljit_si src1, sljit_sw src1w,
1364         sljit_si src2, sljit_sw src2w)
1365 {
1366         sljit_si dst_fr, flags = 0;
1367
1368         CHECK_ERROR();
1369         check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
1370
1371         compiler->cache_arg = 0;
1372         compiler->cache_argw = 0;
1373
1374         dst_fr = FAST_IS_REG(dst) ? (dst << 1) : TMP_FREG2;
1375
1376         if (src1 & SLJIT_MEM) {
1377                 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w)) {
1378                         FAIL_IF(compiler->error);
1379                         src1 = TMP_FREG1;
1380                 } else
1381                         flags |= SLOW_SRC1;
1382         }
1383         else
1384                 src1 <<= 1;
1385
1386         if (src2 & SLJIT_MEM) {
1387                 if (getput_arg_fast(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w)) {
1388                         FAIL_IF(compiler->error);
1389                         src2 = TMP_FREG2;
1390                 } else
1391                         flags |= SLOW_SRC2;
1392         }
1393         else
1394                 src2 <<= 1;
1395
1396         if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
1397                 if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
1398                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, src1, src1w));
1399                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1400                 }
1401                 else {
1402                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1403                         FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1404                 }
1405         }
1406         else if (flags & SLOW_SRC1)
1407                 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG1, src1, src1w, dst, dstw));
1408         else if (flags & SLOW_SRC2)
1409                 FAIL_IF(getput_arg(compiler, FLOAT_DATA(op) | LOAD_DATA, TMP_FREG2, src2, src2w, dst, dstw));
1410
1411         if (flags & SLOW_SRC1)
1412                 src1 = TMP_FREG1;
1413         if (flags & SLOW_SRC2)
1414                 src2 = TMP_FREG2;
1415
1416         switch (GET_OPCODE(op)) {
1417         case SLJIT_ADDD:
1418                 FAIL_IF(push_inst(compiler, ADD_fmt | FMT(op) | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1419                 break;
1420
1421         case SLJIT_SUBD:
1422                 FAIL_IF(push_inst(compiler, SUB_fmt | FMT(op) | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1423                 break;
1424
1425         case SLJIT_MULD:
1426                 FAIL_IF(push_inst(compiler, MUL_fmt | FMT(op) | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1427                 break;
1428
1429         case SLJIT_DIVD:
1430                 FAIL_IF(push_inst(compiler, DIV_fmt | FMT(op) | FT(src2) | FS(src1) | FD(dst_fr), MOVABLE_INS));
1431                 break;
1432         }
1433
1434         if (dst_fr == TMP_FREG2)
1435                 FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(op), TMP_FREG2, dst, dstw, 0, 0));
1436
1437         return SLJIT_SUCCESS;
1438 }
1439
1440 /* --------------------------------------------------------------------- */
1441 /*  Other instructions                                                   */
1442 /* --------------------------------------------------------------------- */
1443
1444 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw)
1445 {
1446         CHECK_ERROR();
1447         check_sljit_emit_fast_enter(compiler, dst, dstw);
1448         ADJUST_LOCAL_OFFSET(dst, dstw);
1449
1450         /* For UNUSED dst. Uncommon, but possible. */
1451         if (dst == SLJIT_UNUSED)
1452                 return SLJIT_SUCCESS;
1453
1454         if (FAST_IS_REG(dst))
1455                 return push_inst(compiler, ADDU_W | SA(RETURN_ADDR_REG) | TA(0) | D(dst), DR(dst));
1456
1457         /* Memory. */
1458         return emit_op_mem(compiler, WORD_DATA, RETURN_ADDR_REG, dst, dstw);
1459 }
1460
1461 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_si src, sljit_sw srcw)
1462 {
1463         CHECK_ERROR();
1464         check_sljit_emit_fast_return(compiler, src, srcw);
1465         ADJUST_LOCAL_OFFSET(src, srcw);
1466
1467         if (FAST_IS_REG(src))
1468                 FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | DA(RETURN_ADDR_REG), RETURN_ADDR_REG));
1469         else if (src & SLJIT_MEM)
1470                 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, RETURN_ADDR_REG, src, srcw));
1471         else if (src & SLJIT_IMM)
1472                 FAIL_IF(load_immediate(compiler, RETURN_ADDR_REG, srcw));
1473
1474         FAIL_IF(push_inst(compiler, JR | SA(RETURN_ADDR_REG), UNMOVABLE_INS));
1475         return push_inst(compiler, NOP, UNMOVABLE_INS);
1476 }
1477
1478 /* --------------------------------------------------------------------- */
1479 /*  Conditional instructions                                             */
1480 /* --------------------------------------------------------------------- */
1481
1482 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
1483 {
1484         struct sljit_label *label;
1485
1486         CHECK_ERROR_PTR();
1487         check_sljit_emit_label(compiler);
1488
1489         if (compiler->last_label && compiler->last_label->size == compiler->size)
1490                 return compiler->last_label;
1491
1492         label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
1493         PTR_FAIL_IF(!label);
1494         set_label(label, compiler);
1495         compiler->delay_slot = UNMOVABLE_INS;
1496         return label;
1497 }
1498
1499 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1500 #define JUMP_LENGTH     4
1501 #else
1502 #define JUMP_LENGTH     8
1503 #endif
1504
1505 #define BR_Z(src) \
1506         inst = BEQ | SA(src) | TA(0) | JUMP_LENGTH; \
1507         flags = IS_BIT26_COND; \
1508         delay_check = src;
1509
1510 #define BR_NZ(src) \
1511         inst = BNE | SA(src) | TA(0) | JUMP_LENGTH; \
1512         flags = IS_BIT26_COND; \
1513         delay_check = src;
1514
1515 #define BR_T() \
1516         inst = BC1T | JUMP_LENGTH; \
1517         flags = IS_BIT16_COND; \
1518         delay_check = FCSR_FCC;
1519
1520 #define BR_F() \
1521         inst = BC1F | JUMP_LENGTH; \
1522         flags = IS_BIT16_COND; \
1523         delay_check = FCSR_FCC;
1524
1525 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_si type)
1526 {
1527         struct sljit_jump *jump;
1528         sljit_ins inst;
1529         sljit_si flags = 0;
1530         sljit_si delay_check = UNMOVABLE_INS;
1531
1532         CHECK_ERROR_PTR();
1533         check_sljit_emit_jump(compiler, type);
1534
1535         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1536         PTR_FAIL_IF(!jump);
1537         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1538         type &= 0xff;
1539
1540         switch (type) {
1541         case SLJIT_C_EQUAL:
1542         case SLJIT_C_FLOAT_NOT_EQUAL:
1543                 BR_NZ(EQUAL_FLAG);
1544                 break;
1545         case SLJIT_C_NOT_EQUAL:
1546         case SLJIT_C_FLOAT_EQUAL:
1547                 BR_Z(EQUAL_FLAG);
1548                 break;
1549         case SLJIT_C_LESS:
1550         case SLJIT_C_FLOAT_LESS:
1551                 BR_Z(ULESS_FLAG);
1552                 break;
1553         case SLJIT_C_GREATER_EQUAL:
1554         case SLJIT_C_FLOAT_GREATER_EQUAL:
1555                 BR_NZ(ULESS_FLAG);
1556                 break;
1557         case SLJIT_C_GREATER:
1558         case SLJIT_C_FLOAT_GREATER:
1559                 BR_Z(UGREATER_FLAG);
1560                 break;
1561         case SLJIT_C_LESS_EQUAL:
1562         case SLJIT_C_FLOAT_LESS_EQUAL:
1563                 BR_NZ(UGREATER_FLAG);
1564                 break;
1565         case SLJIT_C_SIG_LESS:
1566                 BR_Z(LESS_FLAG);
1567                 break;
1568         case SLJIT_C_SIG_GREATER_EQUAL:
1569                 BR_NZ(LESS_FLAG);
1570                 break;
1571         case SLJIT_C_SIG_GREATER:
1572                 BR_Z(GREATER_FLAG);
1573                 break;
1574         case SLJIT_C_SIG_LESS_EQUAL:
1575                 BR_NZ(GREATER_FLAG);
1576                 break;
1577         case SLJIT_C_OVERFLOW:
1578         case SLJIT_C_MUL_OVERFLOW:
1579                 BR_Z(OVERFLOW_FLAG);
1580                 break;
1581         case SLJIT_C_NOT_OVERFLOW:
1582         case SLJIT_C_MUL_NOT_OVERFLOW:
1583                 BR_NZ(OVERFLOW_FLAG);
1584                 break;
1585         case SLJIT_C_FLOAT_UNORDERED:
1586                 BR_F();
1587                 break;
1588         case SLJIT_C_FLOAT_ORDERED:
1589                 BR_T();
1590                 break;
1591         default:
1592                 /* Not conditional branch. */
1593                 inst = 0;
1594                 break;
1595         }
1596
1597         jump->flags |= flags;
1598         if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != delay_check))
1599                 jump->flags |= IS_MOVABLE;
1600
1601         if (inst)
1602                 PTR_FAIL_IF(push_inst(compiler, inst, UNMOVABLE_INS));
1603
1604         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1605         if (type <= SLJIT_JUMP) {
1606                 PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1607                 jump->addr = compiler->size;
1608                 PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1609         } else {
1610                 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1611                 /* Cannot be optimized out if type is >= CALL0. */
1612                 jump->flags |= IS_JAL | (type >= SLJIT_CALL0 ? IS_CALL : 0);
1613                 PTR_FAIL_IF(push_inst(compiler, JALR | S(TMP_REG2) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1614                 jump->addr = compiler->size;
1615                 /* A NOP if type < CALL1. */
1616                 PTR_FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SCRATCH_REG1) | TA(0) | DA(4), UNMOVABLE_INS));
1617         }
1618         return jump;
1619 }
1620
1621 #define RESOLVE_IMM1() \
1622         if (src1 & SLJIT_IMM) { \
1623                 if (src1w) { \
1624                         PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG1), src1w)); \
1625                         src1 = TMP_REG1; \
1626                 } \
1627                 else \
1628                         src1 = 0; \
1629         }
1630
1631 #define RESOLVE_IMM2() \
1632         if (src2 & SLJIT_IMM) { \
1633                 if (src2w) { \
1634                         PTR_FAIL_IF(load_immediate(compiler, DR(TMP_REG2), src2w)); \
1635                         src2 = TMP_REG2; \
1636                 } \
1637                 else \
1638                         src2 = 0; \
1639         }
1640
1641 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_si type,
1642         sljit_si src1, sljit_sw src1w,
1643         sljit_si src2, sljit_sw src2w)
1644 {
1645         struct sljit_jump *jump;
1646         sljit_si flags;
1647         sljit_ins inst;
1648
1649         CHECK_ERROR_PTR();
1650         check_sljit_emit_cmp(compiler, type, src1, src1w, src2, src2w);
1651         ADJUST_LOCAL_OFFSET(src1, src1w);
1652         ADJUST_LOCAL_OFFSET(src2, src2w);
1653
1654         compiler->cache_arg = 0;
1655         compiler->cache_argw = 0;
1656         flags = ((type & SLJIT_INT_OP) ? INT_DATA : WORD_DATA) | LOAD_DATA;
1657         if (src1 & SLJIT_MEM) {
1658                 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG1), src1, src1w, src2, src2w));
1659                 src1 = TMP_REG1;
1660         }
1661         if (src2 & SLJIT_MEM) {
1662                 PTR_FAIL_IF(emit_op_mem2(compiler, flags, DR(TMP_REG2), src2, src2w, 0, 0));
1663                 src2 = TMP_REG2;
1664         }
1665
1666         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1667         PTR_FAIL_IF(!jump);
1668         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1669         type &= 0xff;
1670
1671         if (type <= SLJIT_C_NOT_EQUAL) {
1672                 RESOLVE_IMM1();
1673                 RESOLVE_IMM2();
1674                 jump->flags |= IS_BIT26_COND;
1675                 if (compiler->delay_slot == MOVABLE_INS || (compiler->delay_slot != UNMOVABLE_INS && compiler->delay_slot != DR(src1) && compiler->delay_slot != DR(src2)))
1676                         jump->flags |= IS_MOVABLE;
1677                 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_C_EQUAL ? BNE : BEQ) | S(src1) | T(src2) | JUMP_LENGTH, UNMOVABLE_INS));
1678         }
1679         else if (type >= SLJIT_C_SIG_LESS && (((src1 & SLJIT_IMM) && (src1w == 0)) || ((src2 & SLJIT_IMM) && (src2w == 0)))) {
1680                 inst = NOP;
1681                 if ((src1 & SLJIT_IMM) && (src1w == 0)) {
1682                         RESOLVE_IMM2();
1683                         switch (type) {
1684                         case SLJIT_C_SIG_LESS:
1685                                 inst = BLEZ;
1686                                 jump->flags |= IS_BIT26_COND;
1687                                 break;
1688                         case SLJIT_C_SIG_GREATER_EQUAL:
1689                                 inst = BGTZ;
1690                                 jump->flags |= IS_BIT26_COND;
1691                                 break;
1692                         case SLJIT_C_SIG_GREATER:
1693                                 inst = BGEZ;
1694                                 jump->flags |= IS_BIT16_COND;
1695                                 break;
1696                         case SLJIT_C_SIG_LESS_EQUAL:
1697                                 inst = BLTZ;
1698                                 jump->flags |= IS_BIT16_COND;
1699                                 break;
1700                         }
1701                         src1 = src2;
1702                 }
1703                 else {
1704                         RESOLVE_IMM1();
1705                         switch (type) {
1706                         case SLJIT_C_SIG_LESS:
1707                                 inst = BGEZ;
1708                                 jump->flags |= IS_BIT16_COND;
1709                                 break;
1710                         case SLJIT_C_SIG_GREATER_EQUAL:
1711                                 inst = BLTZ;
1712                                 jump->flags |= IS_BIT16_COND;
1713                                 break;
1714                         case SLJIT_C_SIG_GREATER:
1715                                 inst = BLEZ;
1716                                 jump->flags |= IS_BIT26_COND;
1717                                 break;
1718                         case SLJIT_C_SIG_LESS_EQUAL:
1719                                 inst = BGTZ;
1720                                 jump->flags |= IS_BIT26_COND;
1721                                 break;
1722                         }
1723                 }
1724                 PTR_FAIL_IF(push_inst(compiler, inst | S(src1) | JUMP_LENGTH, UNMOVABLE_INS));
1725         }
1726         else {
1727                 if (type == SLJIT_C_LESS || type == SLJIT_C_GREATER_EQUAL || type == SLJIT_C_SIG_LESS || type == SLJIT_C_SIG_GREATER_EQUAL) {
1728                         RESOLVE_IMM1();
1729                         if ((src2 & SLJIT_IMM) && src2w <= SIMM_MAX && src2w >= SIMM_MIN)
1730                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTIU : SLTI) | S(src1) | T(TMP_REG1) | IMM(src2w), DR(TMP_REG1)));
1731                         else {
1732                                 RESOLVE_IMM2();
1733                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTU : SLT) | S(src1) | T(src2) | D(TMP_REG1), DR(TMP_REG1)));
1734                         }
1735                         type = (type == SLJIT_C_LESS || type == SLJIT_C_SIG_LESS) ? SLJIT_C_NOT_EQUAL : SLJIT_C_EQUAL;
1736                 }
1737                 else {
1738                         RESOLVE_IMM2();
1739                         if ((src1 & SLJIT_IMM) && src1w <= SIMM_MAX && src1w >= SIMM_MIN)
1740                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTIU : SLTI) | S(src2) | T(TMP_REG1) | IMM(src1w), DR(TMP_REG1)));
1741                         else {
1742                                 RESOLVE_IMM1();
1743                                 PTR_FAIL_IF(push_inst(compiler, (type <= SLJIT_C_LESS_EQUAL ? SLTU : SLT) | S(src2) | T(src1) | D(TMP_REG1), DR(TMP_REG1)));
1744                         }
1745                         type = (type == SLJIT_C_GREATER || type == SLJIT_C_SIG_GREATER) ? SLJIT_C_NOT_EQUAL : SLJIT_C_EQUAL;
1746                 }
1747
1748                 jump->flags |= IS_BIT26_COND;
1749                 PTR_FAIL_IF(push_inst(compiler, (type == SLJIT_C_EQUAL ? BNE : BEQ) | S(TMP_REG1) | TA(0) | JUMP_LENGTH, UNMOVABLE_INS));
1750         }
1751
1752         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1753         PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1754         jump->addr = compiler->size;
1755         PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1756         return jump;
1757 }
1758
1759 #undef RESOLVE_IMM1
1760 #undef RESOLVE_IMM2
1761
1762 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_si type,
1763         sljit_si src1, sljit_sw src1w,
1764         sljit_si src2, sljit_sw src2w)
1765 {
1766         struct sljit_jump *jump;
1767         sljit_ins inst;
1768         sljit_si if_true;
1769
1770         CHECK_ERROR_PTR();
1771         check_sljit_emit_fcmp(compiler, type, src1, src1w, src2, src2w);
1772
1773         compiler->cache_arg = 0;
1774         compiler->cache_argw = 0;
1775
1776         if (src1 & SLJIT_MEM) {
1777                 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG1, src1, src1w, src2, src2w));
1778                 src1 = TMP_FREG1;
1779         }
1780         else
1781                 src1 <<= 1;
1782
1783         if (src2 & SLJIT_MEM) {
1784                 PTR_FAIL_IF(emit_op_mem2(compiler, FLOAT_DATA(type) | LOAD_DATA, TMP_FREG2, src2, src2w, 0, 0));
1785                 src2 = TMP_FREG2;
1786         }
1787         else
1788                 src2 <<= 1;
1789
1790         jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1791         PTR_FAIL_IF(!jump);
1792         set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
1793         jump->flags |= IS_BIT16_COND;
1794
1795         switch (type & 0xff) {
1796         case SLJIT_C_FLOAT_EQUAL:
1797                 inst = C_UEQ_fmt;
1798                 if_true = 1;
1799                 break;
1800         case SLJIT_C_FLOAT_NOT_EQUAL:
1801                 inst = C_UEQ_fmt;
1802                 if_true = 0;
1803                 break;
1804         case SLJIT_C_FLOAT_LESS:
1805                 inst = C_ULT_fmt;
1806                 if_true = 1;
1807                 break;
1808         case SLJIT_C_FLOAT_GREATER_EQUAL:
1809                 inst = C_ULT_fmt;
1810                 if_true = 0;
1811                 break;
1812         case SLJIT_C_FLOAT_GREATER:
1813                 inst = C_ULE_fmt;
1814                 if_true = 0;
1815                 break;
1816         case SLJIT_C_FLOAT_LESS_EQUAL:
1817                 inst = C_ULE_fmt;
1818                 if_true = 1;
1819                 break;
1820         case SLJIT_C_FLOAT_UNORDERED:
1821                 inst = C_UN_fmt;
1822                 if_true = 1;
1823                 break;
1824         case SLJIT_C_FLOAT_ORDERED:
1825         default: /* Make compilers happy. */
1826                 inst = C_UN_fmt;
1827                 if_true = 0;
1828                 break;
1829         }
1830
1831         PTR_FAIL_IF(push_inst(compiler, inst | FMT(type) | FT(src2) | FS(src1), UNMOVABLE_INS));
1832         /* Intentionally the other opcode. */
1833         PTR_FAIL_IF(push_inst(compiler, (if_true ? BC1F : BC1T) | JUMP_LENGTH, UNMOVABLE_INS));
1834         PTR_FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1835         PTR_FAIL_IF(push_inst(compiler, JR | S(TMP_REG2), UNMOVABLE_INS));
1836         jump->addr = compiler->size;
1837         PTR_FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1838         return jump;
1839 }
1840
1841 #undef JUMP_LENGTH
1842 #undef BR_Z
1843 #undef BR_NZ
1844 #undef BR_T
1845 #undef BR_F
1846
1847 #undef FLOAT_DATA
1848 #undef FMT
1849
1850 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_ijump(struct sljit_compiler *compiler, sljit_si type, sljit_si src, sljit_sw srcw)
1851 {
1852         sljit_si src_r = TMP_REG2;
1853         struct sljit_jump *jump = NULL;
1854
1855         CHECK_ERROR();
1856         check_sljit_emit_ijump(compiler, type, src, srcw);
1857         ADJUST_LOCAL_OFFSET(src, srcw);
1858
1859         if (FAST_IS_REG(src)) {
1860                 if (DR(src) != 4)
1861                         src_r = src;
1862                 else
1863                         FAIL_IF(push_inst(compiler, ADDU_W | S(src) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
1864         }
1865
1866         if (type >= SLJIT_CALL0) {
1867                 SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
1868                 if (src & (SLJIT_IMM | SLJIT_MEM)) {
1869                         if (src & SLJIT_IMM)
1870                                 FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
1871                         else {
1872                                 SLJIT_ASSERT(src_r == TMP_REG2 && (src & SLJIT_MEM));
1873                                 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1874                         }
1875                         FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1876                         /* We need an extra instruction in any case. */
1877                         return push_inst(compiler, ADDU_W | S(SLJIT_SCRATCH_REG1) | TA(0) | DA(4), UNMOVABLE_INS);
1878                 }
1879
1880                 /* Register input. */
1881                 if (type >= SLJIT_CALL1)
1882                         FAIL_IF(push_inst(compiler, ADDU_W | S(SLJIT_SCRATCH_REG1) | TA(0) | DA(4), 4));
1883                 FAIL_IF(push_inst(compiler, JALR | S(src_r) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
1884                 return push_inst(compiler, ADDU_W | S(src_r) | TA(0) | D(PIC_ADDR_REG), UNMOVABLE_INS);
1885         }
1886
1887         if (src & SLJIT_IMM) {
1888                 jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
1889                 FAIL_IF(!jump);
1890                 set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_JAL : 0));
1891                 jump->u.target = srcw;
1892
1893                 if (compiler->delay_slot != UNMOVABLE_INS)
1894                         jump->flags |= IS_MOVABLE;
1895
1896                 FAIL_IF(emit_const(compiler, TMP_REG2, 0));
1897         }
1898         else if (src & SLJIT_MEM)
1899                 FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, TMP_REG2, 0, TMP_REG1, 0, src, srcw));
1900
1901         FAIL_IF(push_inst(compiler, JR | S(src_r), UNMOVABLE_INS));
1902         if (jump)
1903                 jump->addr = compiler->size;
1904         FAIL_IF(push_inst(compiler, NOP, UNMOVABLE_INS));
1905         return SLJIT_SUCCESS;
1906 }
1907
1908 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_si op,
1909         sljit_si dst, sljit_sw dstw,
1910         sljit_si src, sljit_sw srcw,
1911         sljit_si type)
1912 {
1913         sljit_si sugg_dst_ar, dst_ar;
1914         sljit_si flags = GET_ALL_FLAGS(op);
1915 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
1916 #       define mem_type WORD_DATA
1917 #else
1918         sljit_si mem_type = (op & SLJIT_INT_OP) ? (INT_DATA | SIGNED_DATA) : WORD_DATA;
1919 #endif
1920
1921         CHECK_ERROR();
1922         check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type);
1923         ADJUST_LOCAL_OFFSET(dst, dstw);
1924
1925         if (dst == SLJIT_UNUSED)
1926                 return SLJIT_SUCCESS;
1927
1928         op = GET_OPCODE(op);
1929 #if (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
1930         if (op == SLJIT_MOV_SI || op == SLJIT_MOV_UI)
1931                 mem_type = INT_DATA | SIGNED_DATA;
1932 #endif
1933         sugg_dst_ar = DR((op < SLJIT_ADD && FAST_IS_REG(dst)) ? dst : TMP_REG2);
1934
1935         compiler->cache_arg = 0;
1936         compiler->cache_argw = 0;
1937         if (op >= SLJIT_ADD && (src & SLJIT_MEM)) {
1938                 ADJUST_LOCAL_OFFSET(src, srcw);
1939                 FAIL_IF(emit_op_mem2(compiler, mem_type | LOAD_DATA, DR(TMP_REG1), src, srcw, dst, dstw));
1940                 src = TMP_REG1;
1941                 srcw = 0;
1942         }
1943
1944         switch (type) {
1945         case SLJIT_C_EQUAL:
1946         case SLJIT_C_NOT_EQUAL:
1947                 FAIL_IF(push_inst(compiler, SLTIU | SA(EQUAL_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1948                 dst_ar = sugg_dst_ar;
1949                 break;
1950         case SLJIT_C_LESS:
1951         case SLJIT_C_GREATER_EQUAL:
1952         case SLJIT_C_FLOAT_LESS:
1953         case SLJIT_C_FLOAT_GREATER_EQUAL:
1954                 dst_ar = ULESS_FLAG;
1955                 break;
1956         case SLJIT_C_GREATER:
1957         case SLJIT_C_LESS_EQUAL:
1958         case SLJIT_C_FLOAT_GREATER:
1959         case SLJIT_C_FLOAT_LESS_EQUAL:
1960                 dst_ar = UGREATER_FLAG;
1961                 break;
1962         case SLJIT_C_SIG_LESS:
1963         case SLJIT_C_SIG_GREATER_EQUAL:
1964                 dst_ar = LESS_FLAG;
1965                 break;
1966         case SLJIT_C_SIG_GREATER:
1967         case SLJIT_C_SIG_LESS_EQUAL:
1968                 dst_ar = GREATER_FLAG;
1969                 break;
1970         case SLJIT_C_OVERFLOW:
1971         case SLJIT_C_NOT_OVERFLOW:
1972                 dst_ar = OVERFLOW_FLAG;
1973                 break;
1974         case SLJIT_C_MUL_OVERFLOW:
1975         case SLJIT_C_MUL_NOT_OVERFLOW:
1976                 FAIL_IF(push_inst(compiler, SLTIU | SA(OVERFLOW_FLAG) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1977                 dst_ar = sugg_dst_ar;
1978                 type ^= 0x1; /* Flip type bit for the XORI below. */
1979                 break;
1980         case SLJIT_C_FLOAT_EQUAL:
1981         case SLJIT_C_FLOAT_NOT_EQUAL:
1982                 dst_ar = EQUAL_FLAG;
1983                 break;
1984
1985         case SLJIT_C_FLOAT_UNORDERED:
1986         case SLJIT_C_FLOAT_ORDERED:
1987                 FAIL_IF(push_inst(compiler, CFC1 | TA(sugg_dst_ar) | DA(FCSR_REG), sugg_dst_ar));
1988                 FAIL_IF(push_inst(compiler, SRL | TA(sugg_dst_ar) | DA(sugg_dst_ar) | SH_IMM(23), sugg_dst_ar));
1989                 FAIL_IF(push_inst(compiler, ANDI | SA(sugg_dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
1990                 dst_ar = sugg_dst_ar;
1991                 break;
1992
1993         default:
1994                 SLJIT_ASSERT_STOP();
1995                 dst_ar = sugg_dst_ar;
1996                 break;
1997         }
1998
1999         if (type & 0x1) {
2000                 FAIL_IF(push_inst(compiler, XORI | SA(dst_ar) | TA(sugg_dst_ar) | IMM(1), sugg_dst_ar));
2001                 dst_ar = sugg_dst_ar;
2002         }
2003
2004         if (op >= SLJIT_ADD) {
2005                 if (DR(TMP_REG2) != dst_ar)
2006                         FAIL_IF(push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | D(TMP_REG2), DR(TMP_REG2)));
2007                 return emit_op(compiler, op | flags, mem_type | CUMULATIVE_OP | LOGICAL_OP | IMM_OP | ALT_KEEP_CACHE, dst, dstw, src, srcw, TMP_REG2, 0);
2008         }
2009
2010         if (dst & SLJIT_MEM)
2011                 return emit_op_mem(compiler, mem_type, dst_ar, dst, dstw);
2012
2013         if (sugg_dst_ar != dst_ar)
2014                 return push_inst(compiler, ADDU_W | SA(dst_ar) | TA(0) | DA(sugg_dst_ar), sugg_dst_ar);
2015         return SLJIT_SUCCESS;
2016
2017 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
2018 #       undef mem_type
2019 #endif
2020 }
2021
2022 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw dstw, sljit_sw init_value)
2023 {
2024         struct sljit_const *const_;
2025         sljit_si reg;
2026
2027         CHECK_ERROR_PTR();
2028         check_sljit_emit_const(compiler, dst, dstw, init_value);
2029         ADJUST_LOCAL_OFFSET(dst, dstw);
2030
2031         const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
2032         PTR_FAIL_IF(!const_);
2033         set_const(const_, compiler);
2034
2035         reg = SLOW_IS_REG(dst) ? dst : TMP_REG2;
2036
2037         PTR_FAIL_IF(emit_const(compiler, reg, init_value));
2038
2039         if (dst & SLJIT_MEM)
2040                 PTR_FAIL_IF(emit_op(compiler, SLJIT_MOV, WORD_DATA, dst, dstw, TMP_REG1, 0, TMP_REG2, 0));
2041         return const_;
2042 }