ext/pcre/pcrelib/sljit/sljitNativeMIPS

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This source file includes following definitions.
load_immediate
emit_single_op
emit_const
sljit_set_jump_addr
sljit_set_const
   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 /* mips 64-bit arch dependent functions. */
  28 
  29 static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst_ar, sljit_sw imm)
  30 {
  31         sljit_si shift = 32;
  32         sljit_si shift2;
  33         sljit_si inv = 0;
  34         sljit_ins ins;
  35         sljit_uw uimm;
  36 
  37         if (!(imm & ~0xffff))
  38                 return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
  39 
  40         if (imm < 0 && imm >= SIMM_MIN)
  41                 return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
  42 
  43         if (imm <= 0x7fffffffl && imm >= -0x80000000l) {
  44                 FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
  45                 return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
  46         }
  47 
  48         /* Zero extended number. */
  49         uimm = imm;
  50         if (imm < 0) {
  51                 uimm = ~imm;
  52                 inv = 1;
  53         }
  54 
  55         while (!(uimm & 0xff00000000000000l)) {
  56                 shift -= 8;
  57                 uimm <<= 8;
  58         }
  59 
  60         if (!(uimm & 0xf000000000000000l)) {
  61                 shift -= 4;
  62                 uimm <<= 4;
  63         }
  64 
  65         if (!(uimm & 0xc000000000000000l)) {
  66                 shift -= 2;
  67                 uimm <<= 2;
  68         }
  69 
  70         if ((sljit_sw)uimm < 0) {
  71                 uimm >>= 1;
  72                 shift += 1;
  73         }
  74         SLJIT_ASSERT(((uimm & 0xc000000000000000l) == 0x4000000000000000l) && (shift > 0) && (shift <= 32));
  75 
  76         if (inv)
  77                 uimm = ~uimm;
  78 
  79         FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(uimm >> 48), dst_ar));
  80         if (uimm & 0x0000ffff00000000l)
  81                 FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 32), dst_ar));
  82 
  83         imm &= (1l << shift) - 1;
  84         if (!(imm & ~0xffff)) {
  85                 ins = (shift == 32) ? DSLL32 : DSLL;
  86                 if (shift < 32)
  87                         ins |= SH_IMM(shift);
  88                 FAIL_IF(push_inst(compiler, ins | TA(dst_ar) | DA(dst_ar), dst_ar));
  89                 return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar);
  90         }
  91 
  92         /* Double shifts needs to be performed. */
  93         uimm <<= 32;
  94         shift2 = shift - 16;
  95 
  96         while (!(uimm & 0xf000000000000000l)) {
  97                 shift2 -= 4;
  98                 uimm <<= 4;
  99         }
 100 
 101         if (!(uimm & 0xc000000000000000l)) {
 102                 shift2 -= 2;
 103                 uimm <<= 2;
 104         }
 105 
 106         if (!(uimm & 0x8000000000000000l)) {
 107                 shift2--;
 108                 uimm <<= 1;
 109         }
 110 
 111         SLJIT_ASSERT((uimm & 0x8000000000000000l) && (shift2 > 0) && (shift2 <= 16));
 112 
 113         FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift - shift2), dst_ar));
 114         FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 48), dst_ar));
 115         FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift2), dst_ar));
 116 
 117         imm &= (1l << shift2) - 1;
 118         return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar);
 119 }
 120 
 121 #define SELECT_OP(a, b) \
 122         (!(op & SLJIT_INT_OP) ? a : b)
 123 
 124 #define EMIT_LOGICAL(op_imm, op_norm) \
 125         if (flags & SRC2_IMM) { \
 126                 if (op & SLJIT_SET_E) \
 127                         FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
 128                 if (CHECK_FLAGS(SLJIT_SET_E)) \
 129                         FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
 130         } \
 131         else { \
 132                 if (op & SLJIT_SET_E) \
 133                         FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
 134                 if (CHECK_FLAGS(SLJIT_SET_E)) \
 135                         FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
 136         }
 137 
 138 #define EMIT_SHIFT(op_dimm, op_dimm32, op_imm, op_dv, op_v) \
 139         if (flags & SRC2_IMM) { \
 140                 if (src2 >= 32) { \
 141                         SLJIT_ASSERT(!(op & SLJIT_INT_OP)); \
 142                         ins = op_dimm32; \
 143                         src2 -= 32; \
 144                 } \
 145                 else \
 146                         ins = (op & SLJIT_INT_OP) ? op_imm : op_dimm; \
 147                 if (op & SLJIT_SET_E) \
 148                         FAIL_IF(push_inst(compiler, ins | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
 149                 if (CHECK_FLAGS(SLJIT_SET_E)) \
 150                         FAIL_IF(push_inst(compiler, ins | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
 151         } \
 152         else { \
 153                 ins = (op & SLJIT_INT_OP) ? op_v : op_dv; \
 154                 if (op & SLJIT_SET_E) \
 155                         FAIL_IF(push_inst(compiler, ins | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
 156                 if (CHECK_FLAGS(SLJIT_SET_E)) \
 157                         FAIL_IF(push_inst(compiler, ins | S(src2) | T(src1) | D(dst), DR(dst))); \
 158         }
 159 
 160 static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
 161         sljit_si dst, sljit_si src1, sljit_sw src2)
 162 {
 163         sljit_ins ins;
 164 
 165         switch (GET_OPCODE(op)) {
 166         case SLJIT_MOV:
 167         case SLJIT_MOV_P:
 168                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 169                 if (dst != src2)
 170                         return push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src2) | TA(0) | D(dst), DR(dst));
 171                 return SLJIT_SUCCESS;
 172 
 173         case SLJIT_MOV_UB:
 174         case SLJIT_MOV_SB:
 175                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 176                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
 177                         if (op == SLJIT_MOV_SB) {
 178                                 FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
 179                                 return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(24), DR(dst));
 180                         }
 181                         return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
 182                 }
 183                 else if (dst != src2)
 184                         SLJIT_ASSERT_STOP();
 185                 return SLJIT_SUCCESS;
 186 
 187         case SLJIT_MOV_UH:
 188         case SLJIT_MOV_SH:
 189                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 190                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
 191                         if (op == SLJIT_MOV_SH) {
 192                                 FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
 193                                 return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(16), DR(dst));
 194                         }
 195                         return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
 196                 }
 197                 else if (dst != src2)
 198                         SLJIT_ASSERT_STOP();
 199                 return SLJIT_SUCCESS;
 200 
 201         case SLJIT_MOV_UI:
 202                 SLJIT_ASSERT(!(op & SLJIT_INT_OP));
 203                 FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(0), DR(dst)));
 204                 return push_inst(compiler, DSRL32 | T(dst) | D(dst) | SH_IMM(0), DR(dst));
 205 
 206         case SLJIT_MOV_SI:
 207                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 208                 return push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(0), DR(dst));
 209 
 210         case SLJIT_NOT:
 211                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 212                 if (op & SLJIT_SET_E)
 213                         FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
 214                 if (CHECK_FLAGS(SLJIT_SET_E))
 215                         FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
 216                 return SLJIT_SUCCESS;
 217 
 218         case SLJIT_CLZ:
 219                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
 220 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
 221                 if (op & SLJIT_SET_E)
 222                         FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
 223                 if (CHECK_FLAGS(SLJIT_SET_E))
 224                         FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | T(dst) | D(dst), DR(dst)));
 225 #else
 226                 if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
 227                         FAIL_IF(push_inst(compiler, SELECT_OP(DSRL32, SRL) | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
 228                         return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
 229                 }
 230                 /* Nearly all instructions are unmovable in the following sequence. */
 231                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
 232                 /* Check zero. */
 233                 FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
 234                 FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM((op & SLJIT_INT_OP) ? 32 : 64), UNMOVABLE_INS));
 235                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | T(dst) | IMM(-1), DR(dst)));
 236                 /* Loop for searching the highest bit. */
 237                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(dst) | T(dst) | IMM(1), DR(dst)));
 238                 FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
 239                 FAIL_IF(push_inst(compiler, SELECT_OP(DSLL, SLL) | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
 240                 if (op & SLJIT_SET_E)
 241                         return push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG);
 242 #endif
 243                 return SLJIT_SUCCESS;
 244 
 245         case SLJIT_ADD:
 246                 if (flags & SRC2_IMM) {
 247                         if (op & SLJIT_SET_O) {
 248                                 if (src2 >= 0)
 249                                         FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 250                                 else
 251                                         FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 252                         }
 253                         if (op & SLJIT_SET_E)
 254                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
 255                         if (op & (SLJIT_SET_C | SLJIT_SET_O)) {
 256                                 if (src2 >= 0)
 257                                         FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
 258                                 else {
 259                                         FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
 260                                         FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
 261                                 }
 262                         }
 263                         /* dst may be the same as src1 or src2. */
 264                         if (CHECK_FLAGS(SLJIT_SET_E))
 265                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(src2), DR(dst)));
 266                 }
 267                 else {
 268                         if (op & SLJIT_SET_O)
 269                                 FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 270                         if (op & SLJIT_SET_E)
 271                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
 272                         if (op & (SLJIT_SET_C | SLJIT_SET_O))
 273                                 FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
 274                         /* dst may be the same as src1 or src2. */
 275                         if (CHECK_FLAGS(SLJIT_SET_E))
 276                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | D(dst), DR(dst)));
 277                 }
 278 
 279                 /* a + b >= a | b (otherwise, the carry should be set to 1). */
 280                 if (op & (SLJIT_SET_C | SLJIT_SET_O))
 281                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
 282                 if (!(op & SLJIT_SET_O))
 283                         return SLJIT_SUCCESS;
 284                 FAIL_IF(push_inst(compiler, SELECT_OP(DSLL32, SLL) | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
 285                 FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 286                 FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 287                 return push_inst(compiler, SELECT_OP(DSRL32, SLL) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
 288 
 289         case SLJIT_ADDC:
 290                 if (flags & SRC2_IMM) {
 291                         if (op & SLJIT_SET_C) {
 292                                 if (src2 >= 0)
 293                                         FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
 294                                 else {
 295                                         FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
 296                                         FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 297                                 }
 298                         }
 299                         FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(src2), DR(dst)));
 300                 } else {
 301                         if (op & SLJIT_SET_C)
 302                                 FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 303                         /* dst may be the same as src1 or src2. */
 304                         FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(src1) | T(src2) | D(dst), DR(dst)));
 305                 }
 306                 if (op & SLJIT_SET_C)
 307                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 308 
 309                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDU, ADDU) | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
 310                 if (!(op & SLJIT_SET_C))
 311                         return SLJIT_SUCCESS;
 312 
 313                 /* Set ULESS_FLAG (dst == 0) && (ULESS_FLAG == 1). */
 314                 FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
 315                 /* Set carry flag. */
 316                 return push_inst(compiler, OR | SA(ULESS_FLAG) | TA(OVERFLOW_FLAG) | DA(ULESS_FLAG), ULESS_FLAG);
 317 
 318         case SLJIT_SUB:
 319                 if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_U | SLJIT_SET_S)) || src2 == SIMM_MIN)) {
 320                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
 321                         src2 = TMP_REG2;
 322                         flags &= ~SRC2_IMM;
 323                 }
 324 
 325                 if (flags & SRC2_IMM) {
 326                         if (op & SLJIT_SET_O) {
 327                                 if (src2 >= 0)
 328                                         FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 329                                 else
 330                                         FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 331                         }
 332                         if (op & SLJIT_SET_E)
 333                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
 334                         if (op & (SLJIT_SET_C | SLJIT_SET_O))
 335                                 FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
 336                         /* dst may be the same as src1 or src2. */
 337                         if (CHECK_FLAGS(SLJIT_SET_E))
 338                                 FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst)));
 339                 }
 340                 else {
 341                         if (op & SLJIT_SET_O)
 342                                 FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 343                         if (op & SLJIT_SET_E)
 344                                 FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
 345                         if (op & (SLJIT_SET_U | SLJIT_SET_C | SLJIT_SET_O))
 346                                 FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
 347                         if (op & SLJIT_SET_U)
 348                                 FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
 349                         if (op & SLJIT_SET_S) {
 350                                 FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
 351                                 FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
 352                         }
 353                         /* dst may be the same as src1 or src2. */
 354                         if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S | SLJIT_SET_C))
 355                                 FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst)));
 356                 }
 357 
 358                 if (!(op & SLJIT_SET_O))
 359                         return SLJIT_SUCCESS;
 360                 FAIL_IF(push_inst(compiler, SELECT_OP(DSLL32, SLL) | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
 361                 FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 362                 FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 363                 return push_inst(compiler, SELECT_OP(DSRL32, SRL) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
 364 
 365         case SLJIT_SUBC:
 366                 if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
 367                         FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
 368                         src2 = TMP_REG2;
 369                         flags &= ~SRC2_IMM;
 370                 }
 371 
 372                 if (flags & SRC2_IMM) {
 373                         if (op & SLJIT_SET_C)
 374                                 FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
 375                         /* dst may be the same as src1 or src2. */
 376                         FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst)));
 377                 }
 378                 else {
 379                         if (op & SLJIT_SET_C)
 380                                 FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
 381                         /* dst may be the same as src1 or src2. */
 382                         FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst)));
 383                 }
 384 
 385                 if (op & SLJIT_SET_C)
 386                         FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(LESS_FLAG), LESS_FLAG));
 387 
 388                 FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
 389                 return (op & SLJIT_SET_C) ? push_inst(compiler, OR | SA(OVERFLOW_FLAG) | TA(LESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG) : SLJIT_SUCCESS;
 390 
 391         case SLJIT_MUL:
 392                 SLJIT_ASSERT(!(flags & SRC2_IMM));
 393                 if (!(op & SLJIT_SET_O)) {
 394 #if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
 395                         if (op & SLJIT_INT_OP)
 396                                 return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
 397                         FAIL_IF(push_inst(compiler, DMULT | S(src1) | T(src2), MOVABLE_INS));
 398                         return push_inst(compiler, MFLO | D(dst), DR(dst));
 399 #else
 400                         FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, MULT) | S(src1) | T(src2), MOVABLE_INS));
 401                         return push_inst(compiler, MFLO | D(dst), DR(dst));
 402 #endif
 403                 }
 404                 FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, MULT) | S(src1) | T(src2), MOVABLE_INS));
 405                 FAIL_IF(push_inst(compiler, MFHI | DA(ULESS_FLAG), ULESS_FLAG));
 406                 FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
 407                 FAIL_IF(push_inst(compiler, SELECT_OP(DSRA32, SRA) | T(dst) | DA(UGREATER_FLAG) | SH_IMM(31), UGREATER_FLAG));
 408                 return push_inst(compiler, SELECT_OP(DSUBU, SUBU) | SA(ULESS_FLAG) | TA(UGREATER_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
 409 
 410         case SLJIT_AND:
 411                 EMIT_LOGICAL(ANDI, AND);
 412                 return SLJIT_SUCCESS;
 413 
 414         case SLJIT_OR:
 415                 EMIT_LOGICAL(ORI, OR);
 416                 return SLJIT_SUCCESS;
 417 
 418         case SLJIT_XOR:
 419                 EMIT_LOGICAL(XORI, XOR);
 420                 return SLJIT_SUCCESS;
 421 
 422         case SLJIT_SHL:
 423                 EMIT_SHIFT(DSLL, DSLL32, SLL, DSLLV, SLLV);
 424                 return SLJIT_SUCCESS;
 425 
 426         case SLJIT_LSHR:
 427                 EMIT_SHIFT(DSRL, DSRL32, SRL, DSRLV, SRLV);
 428                 return SLJIT_SUCCESS;
 429 
 430         case SLJIT_ASHR:
 431                 EMIT_SHIFT(DSRA, DSRA32, SRA, DSRAV, SRAV);
 432                 return SLJIT_SUCCESS;
 433         }
 434 
 435         SLJIT_ASSERT_STOP();
 436         return SLJIT_SUCCESS;
 437 }
 438 
 439 static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw init_value)
 440 {
 441         FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 48), DR(dst)));
 442         FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 32), DR(dst)));
 443         FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(16), DR(dst)));
 444         FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 16), DR(dst)));
 445         FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(16), DR(dst)));
 446         return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
 447 }
 448 
 449 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
 450 {
 451         sljit_ins *inst = (sljit_ins*)addr;
 452 
 453         inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 48) & 0xffff);
 454         inst[1] = (inst[1] & 0xffff0000) | ((new_addr >> 32) & 0xffff);
 455         inst[3] = (inst[3] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
 456         inst[5] = (inst[5] & 0xffff0000) | (new_addr & 0xffff);
 457         SLJIT_CACHE_FLUSH(inst, inst + 6);
 458 }
 459 
 460 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
 461 {
 462         sljit_ins *inst = (sljit_ins*)addr;
 463 
 464         inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 48) & 0xffff);
 465         inst[1] = (inst[1] & 0xffff0000) | ((new_constant >> 32) & 0xffff);
 466         inst[3] = (inst[3] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
 467         inst[5] = (inst[5] & 0xffff0000) | (new_constant & 0xffff);
 468         SLJIT_CACHE_FLUSH(inst, inst + 6);
 469 }
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root/ext/pcre/pcrelib/sljit/sljitNativeMIPS_64.c

DEFINITIONS
