--- /dev/null
+/*
+ * Stack-less Just-In-Time compiler
+ *
+ * Copyright 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_Z) \
+ FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
+ if (!(flags & UNUSED_DEST)) \
+ FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
+ } \
+ else { \
+ if (op & SLJIT_SET_Z) \
+ FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
+ if (!(flags & UNUSED_DEST)) \
+ 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_Z) \
+ FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
+ if (!(flags & UNUSED_DEST)) \
+ FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
+ } \
+ else { \
+ if (op & SLJIT_SET_Z) \
+ FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
+ if (!(flags & UNUSED_DEST)) \
+ 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)
+{
+ sljit_s32 is_overflow, is_carry, is_handled;
+
+ 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 {
+ SLJIT_ASSERT(dst == src2);
+ }
+ 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 {
+ SLJIT_ASSERT(dst == src2);
+ }
+ return SLJIT_SUCCESS;
+
+ case SLJIT_NOT:
+ SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
+ if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (!(flags & UNUSED_DEST))
+ 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_Z)
+ FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (!(flags & UNUSED_DEST))
+ 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));
+#endif
+ return SLJIT_SUCCESS;
+
+ case SLJIT_ADD:
+ is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
+ is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
+
+ if (flags & SRC2_IMM) {
+ if (is_overflow) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ else
+ FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ }
+ else if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
+
+ if (is_overflow || is_carry) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
+ else {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
+ FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
+ }
+ }
+ /* dst may be the same as src1 or src2. */
+ if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
+ }
+ else {
+ if (is_overflow)
+ FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ else if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+
+ if (is_overflow || is_carry)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
+ /* dst may be the same as src1 or src2. */
+ if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
+ 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 (is_overflow || is_carry)
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
+ if (!is_overflow)
+ return SLJIT_SUCCESS;
+ FAIL_IF(push_inst(compiler, SLL | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
+ FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
+ if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ return push_inst(compiler, SRL | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG);
+
+ case SLJIT_ADDC:
+ is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
+
+ if (flags & SRC2_IMM) {
+ if (is_carry) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
+ else {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
+ FAIL_IF(push_inst(compiler, OR | S(src1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ }
+ }
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
+ } else {
+ if (is_carry)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_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 (is_carry)
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+
+ FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(OTHER_FLAG) | D(dst), DR(dst)));
+ if (!is_carry)
+ return SLJIT_SUCCESS;
+
+ /* Set ULESS_FLAG (dst == 0) && (OTHER_FLAG == 1). */
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
+ /* Set carry flag. */
+ return push_inst(compiler, OR | SA(OTHER_FLAG) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG);
+
+ case SLJIT_SUB:
+ 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;
+ }
+
+ is_handled = 0;
+
+ if (flags & SRC2_IMM) {
+ if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
+ FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
+ is_handled = 1;
+ }
+ else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
+ FAIL_IF(push_inst(compiler, SLTI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
+ is_handled = 1;
+ }
+ }
+
+ if (!is_handled && GET_FLAG_TYPE(op) >= SLJIT_LESS && GET_FLAG_TYPE(op) <= SLJIT_SIG_LESS_EQUAL) {
+ is_handled = 1;
+
+ if (flags & SRC2_IMM) {
+ FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
+ src2 = TMP_REG2;
+ flags &= ~SRC2_IMM;
+ }
+
+ if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
+ FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
+ }
+ else if (GET_FLAG_TYPE(op) == SLJIT_GREATER || GET_FLAG_TYPE(op) == SLJIT_LESS_EQUAL)
+ {
+ FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
+ }
+ else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
+ FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
+ }
+ else if (GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER || GET_FLAG_TYPE(op) == SLJIT_SIG_LESS_EQUAL)
+ {
+ FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
+ }
+ }
+
+ if (is_handled) {
+ if (flags & SRC2_IMM) {
+ if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
+ if (!(flags & UNUSED_DEST))
+ return push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst));
+ }
+ else {
+ if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ if (!(flags & UNUSED_DEST))
+ return push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst));
+ }
+ return SLJIT_SUCCESS;
+ }
+
+ is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
+ is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
+
+ if (flags & SRC2_IMM) {
+ if (is_overflow) {
+ if (src2 >= 0)
+ FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ else
+ FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ }
+ else if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
+
+ if (is_overflow || is_carry)
+ FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
+ /* dst may be the same as src1 or src2. */
+ if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
+ FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
+ }
+ else {
+ if (is_overflow)
+ FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ else if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
+
+ if (is_overflow || is_carry)
+ FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
+ /* dst may be the same as src1 or src2. */
+ if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
+ FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
+ }
+
+ if (!is_overflow)
+ return SLJIT_SUCCESS;
+ FAIL_IF(push_inst(compiler, SLL | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
+ FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
+ if (op & SLJIT_SET_Z)
+ FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
+ return push_inst(compiler, SRL | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_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;
+ }
+
+ is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
+
+ if (flags & SRC2_IMM) {
+ if (is_carry)
+ FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_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 (is_carry)
+ FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_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 (is_carry)
+ FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | D(TMP_REG1), DR(TMP_REG1)));
+
+ FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(OTHER_FLAG) | D(dst), DR(dst)));
+ return (is_carry) ? push_inst(compiler, OR | SA(EQUAL_FLAG) | T(TMP_REG1) | DA(OTHER_FLAG), OTHER_FLAG) : SLJIT_SUCCESS;
+
+ case SLJIT_MUL:
+ SLJIT_ASSERT(!(flags & SRC2_IMM));
+
+ if (GET_FLAG_TYPE(op) != SLJIT_MUL_OVERFLOW) {
+#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(EQUAL_FLAG), EQUAL_FLAG));
+ FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst)));
+ FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG));
+ return push_inst(compiler, SUBU | SA(EQUAL_FLAG) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_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_UNREACHABLE();
+ 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_target, sljit_sw executable_offset)
+{
+ sljit_ins *inst = (sljit_ins *)addr;
+
+ inst[0] = (inst[0] & 0xffff0000) | ((new_target >> 16) & 0xffff);
+ inst[1] = (inst[1] & 0xffff0000) | (new_target & 0xffff);
+ inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
+ SLJIT_CACHE_FLUSH(inst, inst + 2);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
+{
+ sljit_ins *inst = (sljit_ins *)addr;
+
+ inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff);
+ inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);
+ inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
+ SLJIT_CACHE_FLUSH(inst, inst + 2);
+}
+
+static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_ins *ins_ptr)
+{
+ sljit_s32 stack_offset = 0;
+ sljit_s32 arg_count = 0;
+ sljit_s32 float_arg_count = 0;
+ sljit_s32 word_arg_count = 0;
+ sljit_s32 types = 0;
+ sljit_s32 arg_count_save, types_save;
+ sljit_ins prev_ins = NOP;
+ sljit_ins ins = NOP;
+ sljit_u8 offsets[4];
+
+ SLJIT_ASSERT(reg_map[TMP_REG1] == 4 && freg_map[TMP_FREG1] == 12);
+
+ arg_types >>= SLJIT_DEF_SHIFT;
+
+ while (arg_types) {
+ types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
+
+ switch (arg_types & SLJIT_DEF_MASK) {
+ case SLJIT_ARG_TYPE_F32:
+ offsets[arg_count] = (sljit_u8)stack_offset;
+
+ if (word_arg_count == 0 && arg_count <= 1)
+ offsets[arg_count] = 254 + arg_count;
+
+ stack_offset += sizeof(sljit_f32);
+ arg_count++;
+ float_arg_count++;
+ break;
+ case SLJIT_ARG_TYPE_F64:
+ if (stack_offset & 0x7)
+ stack_offset += sizeof(sljit_sw);
+ offsets[arg_count] = (sljit_u8)stack_offset;
+
+ if (word_arg_count == 0 && arg_count <= 1)
+ offsets[arg_count] = 254 + arg_count;
+
+ stack_offset += sizeof(sljit_f64);
+ arg_count++;
+ float_arg_count++;
+ break;
+ default:
+ offsets[arg_count] = (sljit_u8)stack_offset;
+ stack_offset += sizeof(sljit_sw);
+ arg_count++;
+ word_arg_count++;
+ break;
+ }
+
+ arg_types >>= SLJIT_DEF_SHIFT;
+ }
+
+ /* Stack is aligned to 16 bytes, max two doubles can be placed on the stack. */
+ if (stack_offset > 16)
+ FAIL_IF(push_inst(compiler, ADDIU | S(SLJIT_SP) | T(SLJIT_SP) | IMM(-16), DR(SLJIT_SP)));
+
+ types_save = types;
+ arg_count_save = arg_count;
+
+ while (types) {
+ switch (types & SLJIT_DEF_MASK) {
+ case SLJIT_ARG_TYPE_F32:
+ arg_count--;
+ if (offsets[arg_count] < 254)
+ ins = SWC1 | S(SLJIT_SP) | FT(float_arg_count) | IMM(offsets[arg_count]);
+ float_arg_count--;
+ break;
+ case SLJIT_ARG_TYPE_F64:
+ arg_count--;
+ if (offsets[arg_count] < 254)
+ ins = SDC1 | S(SLJIT_SP) | FT(float_arg_count) | IMM(offsets[arg_count]);
+ float_arg_count--;
+ break;
+ default:
+ if (offsets[arg_count - 1] >= 16)
+ ins = SW | S(SLJIT_SP) | T(word_arg_count) | IMM(offsets[arg_count - 1]);
+ else if (arg_count != word_arg_count)
+ ins = ADDU | S(word_arg_count) | TA(0) | DA(4 + (offsets[arg_count - 1] >> 2));
+ else if (arg_count == 1)
+ ins = ADDU | S(SLJIT_R0) | TA(0) | DA(4);
+
+ arg_count--;
+ word_arg_count--;
+ break;
+ }
+
+ if (ins != NOP) {
+ if (prev_ins != NOP)
+ FAIL_IF(push_inst(compiler, prev_ins, MOVABLE_INS));
+ prev_ins = ins;
+ ins = NOP;
+ }
+
+ types >>= SLJIT_DEF_SHIFT;
+ }
+
+ types = types_save;
+ arg_count = arg_count_save;
+
+ while (types) {
+ switch (types & SLJIT_DEF_MASK) {
+ case SLJIT_ARG_TYPE_F32:
+ arg_count--;
+ if (offsets[arg_count] == 254)
+ ins = MOV_S | FMT_S | FS(SLJIT_FR0) | FD(TMP_FREG1);
+ else if (offsets[arg_count] < 16)
+ ins = LW | S(SLJIT_SP) | TA(4 + (offsets[arg_count] >> 2)) | IMM(offsets[arg_count]);
+ break;
+ case SLJIT_ARG_TYPE_F64:
+ arg_count--;
+ if (offsets[arg_count] == 254)
+ ins = MOV_S | FMT_D | FS(SLJIT_FR0) | FD(TMP_FREG1);
+ else if (offsets[arg_count] < 16) {
+ if (prev_ins != NOP)
+ FAIL_IF(push_inst(compiler, prev_ins, MOVABLE_INS));
+ prev_ins = LW | S(SLJIT_SP) | TA(4 + (offsets[arg_count] >> 2)) | IMM(offsets[arg_count]);
+ ins = LW | S(SLJIT_SP) | TA(5 + (offsets[arg_count] >> 2)) | IMM(offsets[arg_count] + sizeof(sljit_sw));
+ }
+ break;
+ default:
+ arg_count--;
+ break;
+ }
+
+ if (ins != NOP) {
+ if (prev_ins != NOP)
+ FAIL_IF(push_inst(compiler, prev_ins, MOVABLE_INS));
+ prev_ins = ins;
+ ins = NOP;
+ }
+
+ types >>= SLJIT_DEF_SHIFT;
+ }
+
+ *ins_ptr = prev_ins;
+
+ return SLJIT_SUCCESS;
+}
+
+static sljit_s32 post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
+{
+ sljit_s32 stack_offset = 0;
+
+ arg_types >>= SLJIT_DEF_SHIFT;
+
+ while (arg_types) {
+ switch (arg_types & SLJIT_DEF_MASK) {
+ case SLJIT_ARG_TYPE_F32:
+ stack_offset += sizeof(sljit_f32);
+ break;
+ case SLJIT_ARG_TYPE_F64:
+ if (stack_offset & 0x7)
+ stack_offset += sizeof(sljit_sw);
+ stack_offset += sizeof(sljit_f64);
+ break;
+ default:
+ stack_offset += sizeof(sljit_sw);
+ break;
+ }
+
+ arg_types >>= SLJIT_DEF_SHIFT;
+ }
+
+ /* Stack is aligned to 16 bytes, max two doubles can be placed on the stack. */
+ if (stack_offset > 16)
+ return push_inst(compiler, ADDIU | S(SLJIT_SP) | T(SLJIT_SP) | IMM(16), DR(SLJIT_SP));
+
+ return SLJIT_SUCCESS;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
+ sljit_s32 arg_types)
+{
+ struct sljit_jump *jump;
+ sljit_ins ins;
+
+ CHECK_ERROR_PTR();
+ CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
+
+ jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
+ PTR_FAIL_IF(!jump);
+ set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
+ type &= 0xff;
+
+ PTR_FAIL_IF(call_with_args(compiler, arg_types, &ins));
+
+ SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
+
+ PTR_FAIL_IF(emit_const(compiler, PIC_ADDR_REG, 0));
+
+ jump->flags |= IS_JAL | IS_CALL;
+ PTR_FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
+ jump->addr = compiler->size;
+ PTR_FAIL_IF(push_inst(compiler, ins, UNMOVABLE_INS));
+
+ PTR_FAIL_IF(post_call_with_args(compiler, arg_types));
+
+ return jump;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
+ sljit_s32 arg_types,
+ sljit_s32 src, sljit_sw srcw)
+{
+ sljit_ins ins;
+
+ CHECK_ERROR();
+ CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
+
+ SLJIT_ASSERT(DR(PIC_ADDR_REG) == 25 && PIC_ADDR_REG == TMP_REG2);
+
+ if (src & SLJIT_IMM)
+ FAIL_IF(load_immediate(compiler, DR(PIC_ADDR_REG), srcw));
+ else if (FAST_IS_REG(src))
+ FAIL_IF(push_inst(compiler, ADDU | S(src) | TA(0) | D(PIC_ADDR_REG), DR(PIC_ADDR_REG)));
+ else if (src & SLJIT_MEM) {
+ ADJUST_LOCAL_OFFSET(src, srcw);
+ FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, DR(PIC_ADDR_REG), src, srcw));
+ }
+
+ FAIL_IF(call_with_args(compiler, arg_types, &ins));
+
+ /* Register input. */
+ FAIL_IF(push_inst(compiler, JALR | S(PIC_ADDR_REG) | DA(RETURN_ADDR_REG), UNMOVABLE_INS));
+ FAIL_IF(push_inst(compiler, ins, UNMOVABLE_INS));
+ return post_call_with_args(compiler, arg_types);
+}
projects / ossec-hids.git / blobdiff