Annotation of embedaddon/pcre/sljit/sljitNativeMIPS_32.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Stack-less Just-In-Time compiler
! 3: *
! 4: * Copyright 2009-2010 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 32-bit arch dependent functions. */
! 28:
! 29: static int load_immediate(struct sljit_compiler *compiler, int dst_ar, sljit_w imm)
! 30: {
! 31: if (!(imm & ~0xffff))
! 32: return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
! 33:
! 34: if (imm < 0 && imm >= SIMM_MIN)
! 35: return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
! 36:
! 37: FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
! 38: return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
! 39: }
! 40:
! 41: #define EMIT_LOGICAL(op_imm, op_norm) \
! 42: if (flags & SRC2_IMM) { \
! 43: if (op & SLJIT_SET_E) \
! 44: FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
! 45: if (CHECK_FLAGS(SLJIT_SET_E)) \
! 46: FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
! 47: } \
! 48: else { \
! 49: if (op & SLJIT_SET_E) \
! 50: FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
! 51: if (CHECK_FLAGS(SLJIT_SET_E)) \
! 52: FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
! 53: }
! 54:
! 55: #define EMIT_SHIFT(op_imm, op_norm) \
! 56: if (flags & SRC2_IMM) { \
! 57: if (op & SLJIT_SET_E) \
! 58: FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
! 59: if (CHECK_FLAGS(SLJIT_SET_E)) \
! 60: FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
! 61: } \
! 62: else { \
! 63: if (op & SLJIT_SET_E) \
! 64: FAIL_IF(push_inst(compiler, op_norm | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
! 65: if (CHECK_FLAGS(SLJIT_SET_E)) \
! 66: FAIL_IF(push_inst(compiler, op_norm | S(src2) | T(src1) | D(dst), DR(dst))); \
! 67: }
! 68:
! 69: static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags,
! 70: int dst, int src1, sljit_w src2)
! 71: {
! 72: int overflow_ra = 0;
! 73:
! 74: switch (GET_OPCODE(op)) {
! 75: case SLJIT_ADD:
! 76: if (flags & SRC2_IMM) {
! 77: if (op & SLJIT_SET_O) {
! 78: FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
! 79: if (src2 < 0)
! 80: FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1));
! 81: }
! 82: if (op & SLJIT_SET_E)
! 83: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
! 84: if (op & SLJIT_SET_C) {
! 85: if (src2 >= 0)
! 86: FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
! 87: else {
! 88: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
! 89: FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
! 90: }
! 91: }
! 92: /* dst may be the same as src1 or src2. */
! 93: if (CHECK_FLAGS(SLJIT_SET_E))
! 94: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
! 95: if (op & SLJIT_SET_O) {
! 96: FAIL_IF(push_inst(compiler, SRL | T(dst) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
! 97: if (src2 < 0)
! 98: FAIL_IF(push_inst(compiler, XORI | SA(OVERFLOW_FLAG) | TA(OVERFLOW_FLAG) | IMM(1), OVERFLOW_FLAG));
! 99: }
! 100: }
! 101: else {
! 102: if (op & SLJIT_SET_O) {
! 103: FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
! 104: FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
! 105: if (src1 != dst)
! 106: overflow_ra = DR(src1);
! 107: else if (src2 != dst)
! 108: overflow_ra = DR(src2);
! 109: else {
! 110: /* Rare ocasion. */
! 111: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
! 112: overflow_ra = TMP_EREG2;
! 113: }
! 114: }
! 115: if (op & SLJIT_SET_E)
! 116: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
! 117: if (op & SLJIT_SET_C)
! 118: FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
! 119: /* dst may be the same as src1 or src2. */
! 120: if (CHECK_FLAGS(SLJIT_SET_E))
! 121: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
! 122: if (op & SLJIT_SET_O) {
! 123: FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
! 124: FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
! 125: }
! 126: }
! 127:
! 128: /* a + b >= a | b (otherwise, the carry should be set to 1). */
! 129: if (op & SLJIT_SET_C)
! 130: FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
! 131: if (op & SLJIT_SET_O)
! 132: return push_inst(compiler, MOVN | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
! 133: return SLJIT_SUCCESS;
! 134:
! 135: case SLJIT_ADDC:
! 136: if (flags & SRC2_IMM) {
! 137: if (op & SLJIT_SET_C) {
! 138: if (src2 >= 0)
! 139: FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1));
! 140: else {
! 141: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1));
! 142: FAIL_IF(push_inst(compiler, OR | S(src1) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1));
! 143: }
! 144: }
! 145: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
! 146: } else {
! 147: if (op & SLJIT_SET_C)
! 148: FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
! 149: /* dst may be the same as src1 or src2. */
! 150: FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
! 151: }
! 152: if (op & SLJIT_SET_C)
! 153: FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1));
! 154:
! 155: FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
! 156: if (!(op & SLJIT_SET_C))
! 157: return SLJIT_SUCCESS;
! 158:
! 159: /* Set TMP_EREG2 (dst == 0) && (ULESS_FLAG == 1). */
! 160: FAIL_IF(push_inst(compiler, SLTIU | S(dst) | TA(TMP_EREG2) | IMM(1), TMP_EREG2));
! 161: FAIL_IF(push_inst(compiler, AND | SA(TMP_EREG2) | TA(ULESS_FLAG) | DA(TMP_EREG2), TMP_EREG2));
! 162: /* Set carry flag. */
! 163: return push_inst(compiler, OR | SA(TMP_EREG2) | TA(TMP_EREG1) | DA(ULESS_FLAG), ULESS_FLAG);
! 164:
! 165: case SLJIT_SUB:
! 166: if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_S | SLJIT_SET_U)) || src2 == SIMM_MIN)) {
! 167: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
! 168: src2 = TMP_REG2;
! 169: flags &= ~SRC2_IMM;
! 170: }
! 171:
! 172: if (flags & SRC2_IMM) {
! 173: if (op & SLJIT_SET_O) {
! 174: FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
! 175: if (src2 < 0)
! 176: FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1));
! 177: if (src1 != dst)
! 178: overflow_ra = DR(src1);
! 179: else {
! 180: /* Rare ocasion. */
! 181: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
! 182: overflow_ra = TMP_EREG2;
! 183: }
! 184: }
! 185: if (op & SLJIT_SET_E)
! 186: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
! 187: if (op & SLJIT_SET_C)
! 188: FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
! 189: /* dst may be the same as src1 or src2. */
! 190: if (CHECK_FLAGS(SLJIT_SET_E))
! 191: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
! 192: }
! 193: else {
! 194: if (op & SLJIT_SET_O) {
! 195: FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
! 196: FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1));
! 197: if (src1 != dst)
! 198: overflow_ra = DR(src1);
! 199: else {
! 200: /* Rare ocasion. */
! 201: FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2));
! 202: overflow_ra = TMP_EREG2;
! 203: }
! 204: }
! 205: if (op & SLJIT_SET_E)
! 206: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
! 207: if (op & (SLJIT_SET_U | SLJIT_SET_C))
! 208: FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
! 209: if (op & SLJIT_SET_U)
! 210: FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
! 211: if (op & SLJIT_SET_S) {
! 212: FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
! 213: FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
! 214: }
! 215: /* dst may be the same as src1 or src2. */
! 216: if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_S | SLJIT_SET_U | SLJIT_SET_C))
! 217: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
! 218: }
! 219:
! 220: if (op & SLJIT_SET_O) {
! 221: FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
! 222: FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG));
! 223: return push_inst(compiler, MOVZ | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
! 224: }
! 225: return SLJIT_SUCCESS;
! 226:
! 227: case SLJIT_SUBC:
! 228: if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
! 229: FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
! 230: src2 = TMP_REG2;
! 231: flags &= ~SRC2_IMM;
! 232: }
! 233:
! 234: if (flags & SRC2_IMM) {
! 235: if (op & SLJIT_SET_C)
! 236: FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(TMP_EREG1) | IMM(-src2), TMP_EREG1));
! 237: /* dst may be the same as src1 or src2. */
! 238: FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
! 239: }
! 240: else {
! 241: if (op & SLJIT_SET_C)
! 242: FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1));
! 243: /* dst may be the same as src1 or src2. */
! 244: FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
! 245: }
! 246:
! 247: if (op & SLJIT_SET_C)
! 248: FAIL_IF(push_inst(compiler, MOVZ | SA(ULESS_FLAG) | T(dst) | DA(TMP_EREG1), TMP_EREG1));
! 249:
! 250: FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
! 251:
! 252: if (op & SLJIT_SET_C)
! 253: FAIL_IF(push_inst(compiler, ADDU | SA(TMP_EREG1) | TA(0) | DA(ULESS_FLAG), ULESS_FLAG));
! 254:
! 255: return SLJIT_SUCCESS;
! 256:
! 257: case SLJIT_MUL:
! 258: SLJIT_ASSERT(!(flags & SRC2_IMM));
! 259: if (!(op & SLJIT_SET_O)) {
! 260: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
! 261: return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
! 262: #else
! 263: FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
! 264: return push_inst(compiler, MFLO | D(dst), DR(dst));
! 265: #endif
! 266: }
! 267: FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
! 268: FAIL_IF(push_inst(compiler, MFHI | DA(TMP_EREG1), TMP_EREG1));
! 269: FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
! 270: FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(TMP_EREG2) | SH_IMM(31), TMP_EREG2));
! 271: return push_inst(compiler, SUBU | SA(TMP_EREG1) | TA(TMP_EREG2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
! 272:
! 273: case SLJIT_AND:
! 274: EMIT_LOGICAL(ANDI, AND);
! 275: return SLJIT_SUCCESS;
! 276:
! 277: case SLJIT_OR:
! 278: EMIT_LOGICAL(ORI, OR);
! 279: return SLJIT_SUCCESS;
! 280:
! 281: case SLJIT_XOR:
! 282: EMIT_LOGICAL(XORI, XOR);
! 283: return SLJIT_SUCCESS;
! 284:
! 285: case SLJIT_SHL:
! 286: EMIT_SHIFT(SLL, SLLV);
! 287: return SLJIT_SUCCESS;
! 288:
! 289: case SLJIT_LSHR:
! 290: EMIT_SHIFT(SRL, SRLV);
! 291: return SLJIT_SUCCESS;
! 292:
! 293: case SLJIT_ASHR:
! 294: EMIT_SHIFT(SRA, SRAV);
! 295: return SLJIT_SUCCESS;
! 296:
! 297: case SLJIT_MOV:
! 298: case SLJIT_MOV_UI:
! 299: case SLJIT_MOV_SI:
! 300: SLJIT_ASSERT(src1 == TMP_REG1);
! 301: if (dst != src2)
! 302: return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst));
! 303: return SLJIT_SUCCESS;
! 304:
! 305: case SLJIT_MOV_UB:
! 306: case SLJIT_MOV_SB:
! 307: SLJIT_ASSERT(src1 == TMP_REG1);
! 308: if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
! 309: if (op == SLJIT_MOV_SB) {
! 310: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
! 311: return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst));
! 312: #else
! 313: FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
! 314: return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst));
! 315: #endif
! 316: }
! 317: return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
! 318: }
! 319: else if (dst != src2)
! 320: SLJIT_ASSERT_STOP();
! 321: return SLJIT_SUCCESS;
! 322:
! 323: case SLJIT_MOV_UH:
! 324: case SLJIT_MOV_SH:
! 325: SLJIT_ASSERT(src1 == TMP_REG1);
! 326: if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
! 327: if (op == SLJIT_MOV_SH) {
! 328: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
! 329: return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst));
! 330: #else
! 331: FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
! 332: return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst));
! 333: #endif
! 334: }
! 335: return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
! 336: }
! 337: else if (dst != src2)
! 338: SLJIT_ASSERT_STOP();
! 339: return SLJIT_SUCCESS;
! 340:
! 341: case SLJIT_NOT:
! 342: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
! 343: if (op & SLJIT_SET_E)
! 344: FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
! 345: if (CHECK_FLAGS(SLJIT_SET_E))
! 346: FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
! 347: return SLJIT_SUCCESS;
! 348:
! 349: case SLJIT_CLZ:
! 350: SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
! 351: #if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64)
! 352: if (op & SLJIT_SET_E)
! 353: FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
! 354: if (CHECK_FLAGS(SLJIT_SET_E))
! 355: FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst)));
! 356: #else
! 357: if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
! 358: FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
! 359: return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
! 360: }
! 361: /* Nearly all instructions are unmovable in the following sequence. */
! 362: FAIL_IF(push_inst(compiler, ADDU_W | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
! 363: /* Check zero. */
! 364: FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(6), UNMOVABLE_INS));
! 365: FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS));
! 366: /* Check sign bit. */
! 367: FAIL_IF(push_inst(compiler, BLTZ | S(TMP_REG1) | IMM(4), UNMOVABLE_INS));
! 368: FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(0), UNMOVABLE_INS));
! 369: /* Loop for searching the highest bit. */
! 370: FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), DR(TMP_REG1)));
! 371: FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
! 372: FAIL_IF(push_inst(compiler, ADDIU_W | S(dst) | T(dst) | IMM(1), UNMOVABLE_INS));
! 373: if (op & SLJIT_SET_E)
! 374: return push_inst(compiler, ADDU_W | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG);
! 375: #endif
! 376: return SLJIT_SUCCESS;
! 377: }
! 378:
! 379: SLJIT_ASSERT_STOP();
! 380: return SLJIT_SUCCESS;
! 381: }
! 382:
! 383: static SLJIT_INLINE int emit_const(struct sljit_compiler *compiler, int reg, sljit_w init_value)
! 384: {
! 385: FAIL_IF(push_inst(compiler, LUI | T(reg) | IMM(init_value >> 16), DR(reg)));
! 386: return push_inst(compiler, ORI | S(reg) | T(reg) | IMM(init_value), DR(reg));
! 387: }
! 388:
! 389: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
! 390: {
! 391: sljit_ins *inst = (sljit_ins*)addr;
! 392:
! 393: inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
! 394: inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
! 395: SLJIT_CACHE_FLUSH(inst, inst + 2);
! 396: }
! 397:
! 398: SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
! 399: {
! 400: sljit_ins *inst = (sljit_ins*)addr;
! 401:
! 402: inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
! 403: inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
! 404: SLJIT_CACHE_FLUSH(inst, inst + 2);
! 405: }
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