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authorIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
committerIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
commitcba4af1b7643b0da036ff78fd152f74a906c4e97 (patch)
tree84f90cc1a9542b2f374932b04ea0752eabbd3741 /sljit/sljitNativeMIPS_32.c
Commit upstream pcre-8.39.tar.bz2
Diffstat (limited to 'sljit/sljitNativeMIPS_32.c')
-rw-r--r--sljit/sljitNativeMIPS_32.c366
1 files changed, 366 insertions, 0 deletions
diff --git a/sljit/sljitNativeMIPS_32.c b/sljit/sljitNativeMIPS_32.c
new file mode 100644
index 0000000..5096e4f
--- /dev/null
+++ b/sljit/sljitNativeMIPS_32.c
@@ -0,0 +1,366 @@
+/*
+ * Stack-less Just-In-Time compiler
+ *
+ * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* mips 32-bit arch dependent functions. */
+
+static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_ar, sljit_sw imm)
+{
+ if (!(imm & ~0xffff))
+ return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
+
+ if (imm < 0 && imm >= SIMM_MIN)
+ return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
+
+ FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
+ return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
+}
+
+#define EMIT_LOGICAL(op_imm, op_norm) \
+ if (flags & SRC2_IMM) { \
+ if (op & SLJIT_SET_E) \
+ FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
+ if (CHECK_FLAGS(SLJIT_SET_E)) \
+ FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
+ } \
+ else { \
+ if (op & SLJIT_SET_E) \
+ FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
+ if (CHECK_FLAGS(SLJIT_SET_E)) \
+ FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
+ }
+
+#define EMIT_SHIFT(op_imm, op_v) \
+ if (flags & SRC2_IMM) { \
+ if (op & SLJIT_SET_E) \
+ FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
+ if (CHECK_FLAGS(SLJIT_SET_E)) \
+ FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
+ } \
+ else { \
+ if (op & SLJIT_SET_E) \
+ FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
+ if (CHECK_FLAGS(SLJIT_SET_E)) \
+ FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | D(dst), DR(dst))); \
+ }
+
+static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
+ sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
+{
+ switch (GET_OPCODE(op)) {
+ case SLJIT_MOV:
+ case SLJIT_MOV_U32:
+ case SLJIT_MOV_S32:
+ case SLJIT_MOV_P:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+ if (dst != src2)
+ return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst));
+ return SLJIT_SUCCESS;
+
+ case SLJIT_MOV_U8:
+ case SLJIT_MOV_S8:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+ if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
+ if (op == SLJIT_MOV_S8) {
+#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
+ return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst));
+#else
+ FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
+ return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst));
+#endif
+ }
+ return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
+ }
+ else if (dst != src2)
+ SLJIT_ASSERT_STOP();
+ return SLJIT_SUCCESS;
+
+ case SLJIT_MOV_U16:
+ case SLJIT_MOV_S16:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+ if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
+ if (op == SLJIT_MOV_S16) {
+#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
+ return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst));
+#else
+ FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
+ return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst));
+#endif
+ }
+ return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
+ }
+ else if (dst != src2)
+ SLJIT_ASSERT_STOP();
+ return SLJIT_SUCCESS;
+
+ case SLJIT_NOT:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (CHECK_FLAGS(SLJIT_SET_E))
+ FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
+ return SLJIT_SUCCESS;
+
+ case SLJIT_CLZ:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (CHECK_FLAGS(SLJIT_SET_E))
+ FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst)));
+#else
+ if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
+ FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
+ return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
+ }
+ /* Nearly all instructions are unmovable in the following sequence. */
+ FAIL_IF(push_inst(compiler, ADDU | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
+ /* Check zero. */
+ FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
+ FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS));
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(dst) | IMM(-1), DR(dst)));
+ /* Loop for searching the highest bit. */
+ FAIL_IF(push_inst(compiler, ADDIU | S(dst) | T(dst) | IMM(1), DR(dst)));
+ FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
+ FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
+ if (op & SLJIT_SET_E)
+ return push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG);
+#endif
+ return SLJIT_SUCCESS;
+
+ case SLJIT_ADD:
+ if (flags & SRC2_IMM) {
+ if (op & SLJIT_SET_O) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ else
+ FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ }
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
+ if (op & (SLJIT_SET_C | SLJIT_SET_O)) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
+ else {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
+ FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
+ }
+ }
+ /* dst may be the same as src1 or src2. */
+ if (CHECK_FLAGS(SLJIT_SET_E))
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
+ }
+ else {
+ if (op & SLJIT_SET_O)
+ FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (op & (SLJIT_SET_C | SLJIT_SET_O))
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
+ /* dst may be the same as src1 or src2. */
+ if (CHECK_FLAGS(SLJIT_SET_E))
+ FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
+ }
+
+ /* a + b >= a | b (otherwise, the carry should be set to 1). */
+ if (op & (SLJIT_SET_C | SLJIT_SET_O))
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
+ if (!(op & SLJIT_SET_O))
+ return SLJIT_SUCCESS;
+ FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
+ FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ return push_inst(compiler, SLL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
+
+ case SLJIT_ADDC:
+ if (flags & SRC2_IMM) {
+ if (op & SLJIT_SET_C) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
+ else {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
+ FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ }
+ }
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
+ } else {
+ if (op & SLJIT_SET_C)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ /* dst may be the same as src1 or src2. */
+ FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
+ }
+ if (op & SLJIT_SET_C)
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+
+ FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
+ if (!(op & SLJIT_SET_C))
+ return SLJIT_SUCCESS;
+
+ /* Set ULESS_FLAG (dst == 0) && (ULESS_FLAG == 1). */
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG));
+ /* Set carry flag. */
+ return push_inst(compiler, OR | SA(ULESS_FLAG) | TA(OVERFLOW_FLAG) | DA(ULESS_FLAG), ULESS_FLAG);
+
+ case SLJIT_SUB:
+ if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_U | SLJIT_SET_S)) || src2 == SIMM_MIN)) {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
+ src2 = TMP_REG2;
+ flags &= ~SRC2_IMM;
+ }
+
+ if (flags & SRC2_IMM) {
+ if (op & SLJIT_SET_O) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ else
+ FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ }
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
+ if (op & (SLJIT_SET_C | SLJIT_SET_O))
+ FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG));
+ /* dst may be the same as src1 or src2. */
+ if (CHECK_FLAGS(SLJIT_SET_E))
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
+ }
+ else {
+ if (op & SLJIT_SET_O)
+ FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ if (op & SLJIT_SET_E)
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (op & (SLJIT_SET_U | SLJIT_SET_C | SLJIT_SET_O))
+ FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG));
+ if (op & SLJIT_SET_U)
+ FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG));
+ if (op & SLJIT_SET_S) {
+ FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG));
+ FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG));
+ }
+ /* dst may be the same as src1 or src2. */
+ if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S | SLJIT_SET_C))
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
+ }
+
+ if (!(op & SLJIT_SET_O))
+ return SLJIT_SUCCESS;
+ FAIL_IF(push_inst(compiler, SLL | TA(ULESS_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
+ FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ return push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG);
+
+ case SLJIT_SUBC:
+ if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
+ src2 = TMP_REG2;
+ flags &= ~SRC2_IMM;
+ }
+
+ if (flags & SRC2_IMM) {
+ if (op & SLJIT_SET_C)
+ FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OVERFLOW_FLAG) | IMM(src2), OVERFLOW_FLAG));
+ /* dst may be the same as src1 or src2. */
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
+ }
+ else {
+ if (op & SLJIT_SET_C)
+ FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG));
+ /* dst may be the same as src1 or src2. */
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
+ }
+
+ if (op & SLJIT_SET_C)
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(LESS_FLAG), LESS_FLAG));
+
+ FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst)));
+ return (op & SLJIT_SET_C) ? push_inst(compiler, OR | SA(OVERFLOW_FLAG) | TA(LESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG) : SLJIT_SUCCESS;
+
+ case SLJIT_MUL:
+ SLJIT_ASSERT(!(flags & SRC2_IMM));
+ if (!(op & SLJIT_SET_O)) {
+#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
+ return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst));
+#else
+ FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
+ return push_inst(compiler, MFLO | D(dst), DR(dst));
+#endif
+ }
+ FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS));
+ FAIL_IF(push_inst(compiler, MFHI | DA(ULESS_FLAG), ULESS_FLAG));
+ FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
+ FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(UGREATER_FLAG) | SH_IMM(31), UGREATER_FLAG));
+ return push_inst(compiler, SUBU | SA(ULESS_FLAG) | TA(UGREATER_FLAG) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG);
+
+ case SLJIT_AND:
+ EMIT_LOGICAL(ANDI, AND);
+ return SLJIT_SUCCESS;
+
+ case SLJIT_OR:
+ EMIT_LOGICAL(ORI, OR);
+ return SLJIT_SUCCESS;
+
+ case SLJIT_XOR:
+ EMIT_LOGICAL(XORI, XOR);
+ return SLJIT_SUCCESS;
+
+ case SLJIT_SHL:
+ EMIT_SHIFT(SLL, SLLV);
+ return SLJIT_SUCCESS;
+
+ case SLJIT_LSHR:
+ EMIT_SHIFT(SRL, SRLV);
+ return SLJIT_SUCCESS;
+
+ case SLJIT_ASHR:
+ EMIT_SHIFT(SRA, SRAV);
+ return SLJIT_SUCCESS;
+ }
+
+ SLJIT_ASSERT_STOP();
+ return SLJIT_SUCCESS;
+}
+
+static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
+{
+ FAIL_IF(push_inst(compiler, LUI | T(dst) | IMM(init_value >> 16), DR(dst)));
+ return push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value), DR(dst));
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
+{
+ sljit_ins *inst = (sljit_ins*)addr;
+
+ inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff);
+ inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);
+ SLJIT_CACHE_FLUSH(inst, inst + 2);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
+{
+ sljit_ins *inst = (sljit_ins*)addr;
+
+ inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
+ inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
+ SLJIT_CACHE_FLUSH(inst, inst + 2);
+}