src/external/pcre2-10.32/src/sljit/sljitNativePPC_64.c

   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright 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 /* ppc 64-bit arch dependent functions. */
  28
  29 #if defined(__GNUC__) || (defined(__IBM_GCC_ASM) && __IBM_GCC_ASM)
  30 #define ASM_SLJIT_CLZ(src, dst) \
  31         __asm__ volatile ( "cntlzd %0, %1" : "=r"(dst) : "r"(src) )
  32 #elif defined(__xlc__)
  33 #error "Please enable GCC syntax for inline assembly statements"
  34 #else
  35 #error "Must implement count leading zeroes"
  36 #endif
  37
  38 #define RLDI(dst, src, sh, mb, type) \
  39         (HI(30) | S(src) | A(dst) | ((type) << 2) | (((sh) & 0x1f) << 11) | (((sh) & 0x20) >> 4) | (((mb) & 0x1f) << 6) | ((mb) & 0x20))
  40
  41 #define PUSH_RLDICR(reg, shift) \
  42         push_inst(compiler, RLDI(reg, reg, 63 - shift, shift, 1))
  43
  44 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm)
  45 {
  46         sljit_uw tmp;
  47         sljit_uw shift;
  48         sljit_uw tmp2;
  49         sljit_uw shift2;
  50
  51         if (imm <= SIMM_MAX && imm >= SIMM_MIN)
  52                 return push_inst(compiler, ADDI | D(reg) | A(0) | IMM(imm));
  53
  54         if (!(imm & ~0xffff))
  55                 return push_inst(compiler, ORI | S(TMP_ZERO) | A(reg) | IMM(imm));
  56
  57         if (imm <= 0x7fffffffl && imm >= -0x80000000l) {
  58                 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(imm >> 16)));
  59                 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;
  60         }
  61
  62         /* Count leading zeroes. */
  63         tmp = (imm >= 0) ? imm : ~imm;
  64         ASM_SLJIT_CLZ(tmp, shift);
  65         SLJIT_ASSERT(shift > 0);
  66         shift--;
  67         tmp = (imm << shift);
  68
  69         if ((tmp & ~0xffff000000000000ul) == 0) {
  70                 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | IMM(tmp >> 48)));
  71                 shift += 15;
  72                 return PUSH_RLDICR(reg, shift);
  73         }
  74
  75         if ((tmp & ~0xffffffff00000000ul) == 0) {
  76                 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(tmp >> 48)));
  77                 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(tmp >> 32)));
  78                 shift += 31;
  79                 return PUSH_RLDICR(reg, shift);
  80         }
  81
  82         /* Cut out the 16 bit from immediate. */
  83         shift += 15;
  84         tmp2 = imm & ((1ul << (63 - shift)) - 1);
  85
  86         if (tmp2 <= 0xffff) {
  87                 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | IMM(tmp >> 48)));
  88                 FAIL_IF(PUSH_RLDICR(reg, shift));
  89                 return push_inst(compiler, ORI | S(reg) | A(reg) | tmp2);
  90         }
  91
  92         if (tmp2 <= 0xffffffff) {
  93                 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | IMM(tmp >> 48)));
  94                 FAIL_IF(PUSH_RLDICR(reg, shift));
  95                 FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | (tmp2 >> 16)));
  96                 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(tmp2)) : SLJIT_SUCCESS;
  97         }
  98
  99         ASM_SLJIT_CLZ(tmp2, shift2);
 100         tmp2 <<= shift2;
 101
 102         if ((tmp2 & ~0xffff000000000000ul) == 0) {
 103                 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | IMM(tmp >> 48)));
 104                 shift2 += 15;
 105                 shift += (63 - shift2);
 106                 FAIL_IF(PUSH_RLDICR(reg, shift));
 107                 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | (tmp2 >> 48)));
 108                 return PUSH_RLDICR(reg, shift2);
 109         }
 110
 111         /* The general version. */
 112         FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(imm >> 48)));
 113         FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm >> 32)));
 114         FAIL_IF(PUSH_RLDICR(reg, 31));
 115         FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | IMM(imm >> 16)));
 116         return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm));
 117 }
 118
 119 /* Simplified mnemonics: clrldi. */
 120 #define INS_CLEAR_LEFT(dst, src, from) \
 121         (RLDICL | S(src) | A(dst) | ((from) << 6) | (1 << 5))
 122
 123 /* Sign extension for integer operations. */
 124 #define UN_EXTS() \
 125         if ((flags & (ALT_SIGN_EXT | REG2_SOURCE)) == (ALT_SIGN_EXT | REG2_SOURCE)) { \
 126                 FAIL_IF(push_inst(compiler, EXTSW | S(src2) | A(TMP_REG2))); \
 127                 src2 = TMP_REG2; \
 128         }
 129
 130 #define BIN_EXTS() \
 131         if (flags & ALT_SIGN_EXT) { \
 132                 if (flags & REG1_SOURCE) { \
 133                         FAIL_IF(push_inst(compiler, EXTSW | S(src1) | A(TMP_REG1))); \
 134                         src1 = TMP_REG1; \
 135                 } \
 136                 if (flags & REG2_SOURCE) { \
 137                         FAIL_IF(push_inst(compiler, EXTSW | S(src2) | A(TMP_REG2))); \
 138                         src2 = TMP_REG2; \
 139                 } \
 140         }
 141
 142 #define BIN_IMM_EXTS() \
 143         if ((flags & (ALT_SIGN_EXT | REG1_SOURCE)) == (ALT_SIGN_EXT | REG1_SOURCE)) { \
 144                 FAIL_IF(push_inst(compiler, EXTSW | S(src1) | A(TMP_REG1))); \
 145                 src1 = TMP_REG1; \
 146         }
 147
 148 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
 149         sljit_s32 dst, sljit_s32 src1, sljit_s32 src2)
 150 {
 151         switch (op) {
 152         case SLJIT_MOV:
 153         case SLJIT_MOV_P:
 154                 SLJIT_ASSERT(src1 == TMP_REG1);
 155                 if (dst != src2)
 156                         return push_inst(compiler, OR | S(src2) | A(dst) | B(src2));
 157                 return SLJIT_SUCCESS;
 158
 159         case SLJIT_MOV_U32:
 160         case SLJIT_MOV_S32:
 161                 SLJIT_ASSERT(src1 == TMP_REG1);
 162                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
 163                         if (op == SLJIT_MOV_S32)
 164                                 return push_inst(compiler, EXTSW | S(src2) | A(dst));
 165                         return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 0));
 166                 }
 167                 else {
 168                         SLJIT_ASSERT(dst == src2);
 169                 }
 170                 return SLJIT_SUCCESS;
 171
 172         case SLJIT_MOV_U8:
 173         case SLJIT_MOV_S8:
 174                 SLJIT_ASSERT(src1 == TMP_REG1);
 175                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
 176                         if (op == SLJIT_MOV_S8)
 177                                 return push_inst(compiler, EXTSB | S(src2) | A(dst));
 178                         return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 24));
 179                 }
 180                 else if ((flags & REG_DEST) && op == SLJIT_MOV_S8)
 181                         return push_inst(compiler, EXTSB | S(src2) | A(dst));
 182                 else {
 183                         SLJIT_ASSERT(dst == src2);
 184                 }
 185                 return SLJIT_SUCCESS;
 186
 187         case SLJIT_MOV_U16:
 188         case SLJIT_MOV_S16:
 189                 SLJIT_ASSERT(src1 == TMP_REG1);
 190                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
 191                         if (op == SLJIT_MOV_S16)
 192                                 return push_inst(compiler, EXTSH | S(src2) | A(dst));
 193                         return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 16));
 194                 }
 195                 else {
 196                         SLJIT_ASSERT(dst == src2);
 197                 }
 198                 return SLJIT_SUCCESS;
 199
 200         case SLJIT_NOT:
 201                 SLJIT_ASSERT(src1 == TMP_REG1);
 202                 UN_EXTS();
 203                 return push_inst(compiler, NOR | RC(flags) | S(src2) | A(dst) | B(src2));
 204
 205         case SLJIT_NEG:
 206                 SLJIT_ASSERT(src1 == TMP_REG1);
 207
 208                 if ((flags & (ALT_FORM1 | ALT_SIGN_EXT)) == (ALT_FORM1 | ALT_SIGN_EXT)) {
 209                         FAIL_IF(push_inst(compiler, RLDI(TMP_REG2, src2, 32, 31, 1)));
 210                         FAIL_IF(push_inst(compiler, NEG | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(TMP_REG2)));
 211                         return push_inst(compiler, RLDI(dst, dst, 32, 32, 0));
 212                 }
 213
 214                 UN_EXTS();
 215                 /* Setting XER SO is not enough, CR SO is also needed. */
 216                 return push_inst(compiler, NEG | OE((flags & ALT_FORM1) ? ALT_SET_FLAGS : 0) | RC(flags) | D(dst) | A(src2));
 217
 218         case SLJIT_CLZ:
 219                 SLJIT_ASSERT(src1 == TMP_REG1);
 220                 if (flags & ALT_FORM1)
 221                         return push_inst(compiler, CNTLZW | S(src2) | A(dst));
 222                 return push_inst(compiler, CNTLZD | S(src2) | A(dst));
 223
 224         case SLJIT_ADD:
 225                 if (flags & ALT_FORM1) {
 226                         if (flags & ALT_SIGN_EXT) {
 227                                 FAIL_IF(push_inst(compiler, RLDI(TMP_REG1, src1, 32, 31, 1)));
 228                                 src1 = TMP_REG1;
 229                                 FAIL_IF(push_inst(compiler, RLDI(TMP_REG2, src2, 32, 31, 1)));
 230                                 src2 = TMP_REG2;
 231                         }
 232                         /* Setting XER SO is not enough, CR SO is also needed. */
 233                         FAIL_IF(push_inst(compiler, ADD | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2)));
 234                         if (flags & ALT_SIGN_EXT)
 235                                 return push_inst(compiler, RLDI(dst, dst, 32, 32, 0));
 236                         return SLJIT_SUCCESS;
 237                 }
 238
 239                 if (flags & ALT_FORM2) {
 240                         /* Flags does not set: BIN_IMM_EXTS unnecessary. */
 241                         SLJIT_ASSERT(src2 == TMP_REG2);
 242
 243                         if (flags & ALT_FORM3)
 244                                 return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);
 245
 246                         if (flags & ALT_FORM4) {
 247                                 FAIL_IF(push_inst(compiler, ADDIS | D(dst) | A(src1) | (((compiler->imm >> 16) & 0xffff) + ((compiler->imm >> 15) & 0x1))));
 248                                 src1 = dst;
 249                         }
 250
 251                         return push_inst(compiler, ADDI | D(dst) | A(src1) | (compiler->imm & 0xffff));
 252                 }
 253                 if (flags & ALT_FORM3) {
 254                         SLJIT_ASSERT(src2 == TMP_REG2);
 255                         BIN_IMM_EXTS();
 256                         return push_inst(compiler, ADDIC | D(dst) | A(src1) | compiler->imm);
 257                 }
 258                 if (!(flags & ALT_SET_FLAGS))
 259                         return push_inst(compiler, ADD | D(dst) | A(src1) | B(src2));
 260                 BIN_EXTS();
 261                 if (flags & ALT_FORM4)
 262                         return push_inst(compiler, ADDC | RC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2));
 263                 return push_inst(compiler, ADD | RC(flags) | D(dst) | A(src1) | B(src2));
 264
 265         case SLJIT_ADDC:
 266                 BIN_EXTS();
 267                 return push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2));
 268
 269         case SLJIT_SUB:
 270                 if (flags & ALT_FORM1) {
 271                         if (flags & ALT_FORM2) {
 272                                 FAIL_IF(push_inst(compiler, CMPLI | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | compiler->imm));
 273                                 if (!(flags & ALT_FORM3))
 274                                         return SLJIT_SUCCESS;
 275                                 return push_inst(compiler, ADDI | D(dst) | A(src1) | (-compiler->imm & 0xffff));
 276                         }
 277                         FAIL_IF(push_inst(compiler, CMPL | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | B(src2)));
 278                         if (!(flags & ALT_FORM3))
 279                                 return SLJIT_SUCCESS;
 280                         return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
 281                 }
 282
 283                 if (flags & ALT_FORM2) {
 284                         if (flags & ALT_SIGN_EXT) {
 285                                 FAIL_IF(push_inst(compiler, RLDI(TMP_REG1, src1, 32, 31, 1)));
 286                                 src1 = TMP_REG1;
 287                                 FAIL_IF(push_inst(compiler, RLDI(TMP_REG2, src2, 32, 31, 1)));
 288                                 src2 = TMP_REG2;
 289                         }
 290                         /* Setting XER SO is not enough, CR SO is also needed. */
 291                         FAIL_IF(push_inst(compiler, SUBF | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1)));
 292                         if (flags & ALT_SIGN_EXT)
 293                                 return push_inst(compiler, RLDI(dst, dst, 32, 32, 0));
 294                         return SLJIT_SUCCESS;
 295                 }
 296
 297                 if (flags & ALT_FORM3) {
 298                         /* Flags does not set: BIN_IMM_EXTS unnecessary. */
 299                         SLJIT_ASSERT(src2 == TMP_REG2);
 300                         return push_inst(compiler, SUBFIC | D(dst) | A(src1) | compiler->imm);
 301                 }
 302
 303                 if (flags & ALT_FORM4) {
 304                         if (flags & ALT_FORM5) {
 305                                 SLJIT_ASSERT(src2 == TMP_REG2);
 306                                 return push_inst(compiler, CMPI | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | compiler->imm);
 307                         }
 308                         return push_inst(compiler, CMP | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | B(src2));
 309                 }
 310
 311                 if (!(flags & ALT_SET_FLAGS))
 312                         return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
 313                 BIN_EXTS();
 314                 if (flags & ALT_FORM5)
 315                         return push_inst(compiler, SUBFC | RC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));
 316                 return push_inst(compiler, SUBF | RC(flags) | D(dst) | A(src2) | B(src1));
 317
 318         case SLJIT_SUBC:
 319                 BIN_EXTS();
 320                 return push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1));
 321
 322         case SLJIT_MUL:
 323                 if (flags & ALT_FORM1) {
 324                         SLJIT_ASSERT(src2 == TMP_REG2);
 325                         return push_inst(compiler, MULLI | D(dst) | A(src1) | compiler->imm);
 326                 }
 327                 BIN_EXTS();
 328                 if (flags & ALT_FORM2)
 329                         return push_inst(compiler, MULLW | OE(flags) | RC(flags) | D(dst) | A(src2) | B(src1));
 330                 return push_inst(compiler, MULLD | OE(flags) | RC(flags) | D(dst) | A(src2) | B(src1));
 331
 332         case SLJIT_AND:
 333                 if (flags & ALT_FORM1) {
 334                         SLJIT_ASSERT(src2 == TMP_REG2);
 335                         return push_inst(compiler, ANDI | S(src1) | A(dst) | compiler->imm);
 336                 }
 337                 if (flags & ALT_FORM2) {
 338                         SLJIT_ASSERT(src2 == TMP_REG2);
 339                         return push_inst(compiler, ANDIS | S(src1) | A(dst) | compiler->imm);
 340                 }
 341                 return push_inst(compiler, AND | RC(flags) | S(src1) | A(dst) | B(src2));
 342
 343         case SLJIT_OR:
 344                 if (flags & ALT_FORM1) {
 345                         SLJIT_ASSERT(src2 == TMP_REG2);
 346                         return push_inst(compiler, ORI | S(src1) | A(dst) | compiler->imm);
 347                 }
 348                 if (flags & ALT_FORM2) {
 349                         SLJIT_ASSERT(src2 == TMP_REG2);
 350                         return push_inst(compiler, ORIS | S(src1) | A(dst) | compiler->imm);
 351                 }
 352                 if (flags & ALT_FORM3) {
 353                         SLJIT_ASSERT(src2 == TMP_REG2);
 354                         FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(compiler->imm)));
 355                         return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
 356                 }
 357                 return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));
 358
 359         case SLJIT_XOR:
 360                 if (flags & ALT_FORM1) {
 361                         SLJIT_ASSERT(src2 == TMP_REG2);
 362                         return push_inst(compiler, XORI | S(src1) | A(dst) | compiler->imm);
 363                 }
 364                 if (flags & ALT_FORM2) {
 365                         SLJIT_ASSERT(src2 == TMP_REG2);
 366                         return push_inst(compiler, XORIS | S(src1) | A(dst) | compiler->imm);
 367                 }
 368                 if (flags & ALT_FORM3) {
 369                         SLJIT_ASSERT(src2 == TMP_REG2);
 370                         FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(compiler->imm)));
 371                         return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));
 372                 }
 373                 return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));
 374
 375         case SLJIT_SHL:
 376                 if (flags & ALT_FORM1) {
 377                         SLJIT_ASSERT(src2 == TMP_REG2);
 378                         if (flags & ALT_FORM2) {
 379                                 compiler->imm &= 0x1f;
 380                                 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11) | ((31 - compiler->imm) << 1));
 381                         }
 382                         compiler->imm &= 0x3f;
 383                         return push_inst(compiler, RLDI(dst, src1, compiler->imm, 63 - compiler->imm, 1) | RC(flags));
 384                 }
 385                 return push_inst(compiler, ((flags & ALT_FORM2) ? SLW : SLD) | RC(flags) | S(src1) | A(dst) | B(src2));
 386
 387         case SLJIT_LSHR:
 388                 if (flags & ALT_FORM1) {
 389                         SLJIT_ASSERT(src2 == TMP_REG2);
 390                         if (flags & ALT_FORM2) {
 391                                 compiler->imm &= 0x1f;
 392                                 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (((32 - compiler->imm) & 0x1f) << 11) | (compiler->imm << 6) | (31 << 1));
 393                         }
 394                         compiler->imm &= 0x3f;
 395                         return push_inst(compiler, RLDI(dst, src1, 64 - compiler->imm, compiler->imm, 0) | RC(flags));
 396                 }
 397                 return push_inst(compiler, ((flags & ALT_FORM2) ? SRW : SRD) | RC(flags) | S(src1) | A(dst) | B(src2));
 398
 399         case SLJIT_ASHR:
 400                 if (flags & ALT_FORM1) {
 401                         SLJIT_ASSERT(src2 == TMP_REG2);
 402                         if (flags & ALT_FORM2) {
 403                                 compiler->imm &= 0x1f;
 404                                 return push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11));
 405                         }
 406                         compiler->imm &= 0x3f;
 407                         return push_inst(compiler, SRADI | RC(flags) | S(src1) | A(dst) | ((compiler->imm & 0x1f) << 11) | ((compiler->imm & 0x20) >> 4));
 408                 }
 409                 return push_inst(compiler, ((flags & ALT_FORM2) ? SRAW : SRAD) | RC(flags) | S(src1) | A(dst) | B(src2));
 410         }
 411
 412         SLJIT_UNREACHABLE();
 413         return SLJIT_SUCCESS;
 414 }
 415
 416 static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
 417 {
 418         sljit_s32 arg_count = 0;
 419         sljit_s32 word_arg_count = 0;
 420         sljit_s32 types = 0;
 421         sljit_s32 reg = 0;
 422
 423         if (src)
 424                 reg = *src & REG_MASK;
 425
 426         arg_types >>= SLJIT_DEF_SHIFT;
 427
 428         while (arg_types) {
 429                 types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
 430
 431                 switch (arg_types & SLJIT_DEF_MASK) {
 432                 case SLJIT_ARG_TYPE_F32:
 433                 case SLJIT_ARG_TYPE_F64:
 434                         arg_count++;
 435                         break;
 436                 default:
 437                         arg_count++;
 438                         word_arg_count++;
 439
 440                         if (arg_count != word_arg_count && arg_count == reg) {
 441                                 FAIL_IF(push_inst(compiler, OR | S(reg) | A(TMP_CALL_REG) | B(reg)));
 442                                 *src = TMP_CALL_REG;
 443                         }
 444                         break;
 445                 }
 446
 447                 arg_types >>= SLJIT_DEF_SHIFT;
 448         }
 449
 450         while (types) {
 451                 switch (types & SLJIT_DEF_MASK) {
 452                 case SLJIT_ARG_TYPE_F32:
 453                 case SLJIT_ARG_TYPE_F64:
 454                         arg_count--;
 455                         break;
 456                 default:
 457                         if (arg_count != word_arg_count)
 458                                 FAIL_IF(push_inst(compiler, OR | S(word_arg_count) | A(arg_count) | B(word_arg_count)));
 459
 460                         arg_count--;
 461                         word_arg_count--;
 462                         break;
 463                 }
 464
 465                 types >>= SLJIT_DEF_SHIFT;
 466         }
 467
 468         return SLJIT_SUCCESS;
 469 }
 470
 471 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw init_value)
 472 {
 473         FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(init_value >> 48)));
 474         FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value >> 32)));
 475         FAIL_IF(PUSH_RLDICR(reg, 31));
 476         FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | IMM(init_value >> 16)));
 477         return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value));
 478 }
 479
 480 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
 481 {
 482         sljit_ins *inst = (sljit_ins*)addr;
 483
 484         inst[0] = (inst[0] & 0xffff0000) | ((new_target >> 48) & 0xffff);
 485         inst[1] = (inst[1] & 0xffff0000) | ((new_target >> 32) & 0xffff);
 486         inst[3] = (inst[3] & 0xffff0000) | ((new_target >> 16) & 0xffff);
 487         inst[4] = (inst[4] & 0xffff0000) | (new_target & 0xffff);
 488         inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
 489         SLJIT_CACHE_FLUSH(inst, inst + 5);
 490 }
 491
 492 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
 493 {
 494         sljit_ins *inst = (sljit_ins*)addr;
 495
 496         inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 48) & 0xffff);
 497         inst[1] = (inst[1] & 0xffff0000) | ((new_constant >> 32) & 0xffff);
 498         inst[3] = (inst[3] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
 499         inst[4] = (inst[4] & 0xffff0000) | (new_constant & 0xffff);
 500         inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
 501         SLJIT_CACHE_FLUSH(inst, inst + 5);
 502 }