667 lines
23 KiB
C
667 lines
23 KiB
C
/*
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* Stack-less Just-In-Time compiler
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*
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* Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* mips 32-bit arch dependent functions. */
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static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_ar, sljit_sw imm)
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{
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if (!(imm & ~0xffff))
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return push_inst(compiler, ORI | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
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if (imm < 0 && imm >= SIMM_MIN)
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return push_inst(compiler, ADDIU | SA(0) | TA(dst_ar) | IMM(imm), dst_ar);
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FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(imm >> 16), dst_ar));
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return (imm & 0xffff) ? push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar) : SLJIT_SUCCESS;
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}
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#define EMIT_LOGICAL(op_imm, op_norm) \
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if (flags & SRC2_IMM) { \
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if (op & SLJIT_SET_Z) \
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FAIL_IF(push_inst(compiler, op_imm | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); \
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if (!(flags & UNUSED_DEST)) \
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FAIL_IF(push_inst(compiler, op_imm | S(src1) | T(dst) | IMM(src2), DR(dst))); \
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} \
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else { \
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if (op & SLJIT_SET_Z) \
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FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
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if (!(flags & UNUSED_DEST)) \
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FAIL_IF(push_inst(compiler, op_norm | S(src1) | T(src2) | D(dst), DR(dst))); \
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}
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#define EMIT_SHIFT(op_imm, op_v) \
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if (flags & SRC2_IMM) { \
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if (op & SLJIT_SET_Z) \
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FAIL_IF(push_inst(compiler, op_imm | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \
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if (!(flags & UNUSED_DEST)) \
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FAIL_IF(push_inst(compiler, op_imm | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \
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} \
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else { \
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if (op & SLJIT_SET_Z) \
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FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \
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if (!(flags & UNUSED_DEST)) \
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FAIL_IF(push_inst(compiler, op_v | S(src2) | T(src1) | D(dst), DR(dst))); \
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}
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static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
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sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
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{
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sljit_s32 is_overflow, is_carry, is_handled;
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switch (GET_OPCODE(op)) {
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case SLJIT_MOV:
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case SLJIT_MOV_U32:
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case SLJIT_MOV_S32:
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case SLJIT_MOV_P:
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SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
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if (dst != src2)
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return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst));
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return SLJIT_SUCCESS;
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case SLJIT_MOV_U8:
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case SLJIT_MOV_S8:
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SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
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if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
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if (op == SLJIT_MOV_S8) {
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#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
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return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst));
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#else
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FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst)));
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return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst));
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#endif
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}
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return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst));
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}
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else {
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SLJIT_ASSERT(dst == src2);
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}
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return SLJIT_SUCCESS;
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case SLJIT_MOV_U16:
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case SLJIT_MOV_S16:
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SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
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if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
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if (op == SLJIT_MOV_S16) {
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#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
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return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst));
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#else
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FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst)));
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return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst));
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#endif
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}
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return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst));
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}
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else {
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SLJIT_ASSERT(dst == src2);
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}
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return SLJIT_SUCCESS;
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case SLJIT_NOT:
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SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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if (!(flags & UNUSED_DEST))
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FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst)));
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return SLJIT_SUCCESS;
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case SLJIT_CLZ:
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SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
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#if (defined SLJIT_MIPS_R1 && SLJIT_MIPS_R1)
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
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if (!(flags & UNUSED_DEST))
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FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst)));
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#else
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if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) {
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FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG));
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return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG);
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}
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/* Nearly all instructions are unmovable in the following sequence. */
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FAIL_IF(push_inst(compiler, ADDU | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1)));
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/* Check zero. */
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FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(5), UNMOVABLE_INS));
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FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS));
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(dst) | IMM(-1), DR(dst)));
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/* Loop for searching the highest bit. */
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FAIL_IF(push_inst(compiler, ADDIU | S(dst) | T(dst) | IMM(1), DR(dst)));
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FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS));
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FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS));
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#endif
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return SLJIT_SUCCESS;
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case SLJIT_ADD:
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is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
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is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
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if (flags & SRC2_IMM) {
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if (is_overflow) {
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if (src2 >= 0)
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
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else
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FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
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}
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else if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
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if (is_overflow || is_carry) {
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if (src2 >= 0)
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FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
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else {
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
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FAIL_IF(push_inst(compiler, OR | S(src1) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
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}
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}
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/* dst may be the same as src1 or src2. */
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if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
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}
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else {
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if (is_overflow)
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FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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else if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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if (is_overflow || is_carry)
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
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/* dst may be the same as src1 or src2. */
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if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
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}
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/* a + b >= a | b (otherwise, the carry should be set to 1). */
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if (is_overflow || is_carry)
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FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
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if (!is_overflow)
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return SLJIT_SUCCESS;
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FAIL_IF(push_inst(compiler, SLL | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
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FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
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FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
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return push_inst(compiler, SRL | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG);
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case SLJIT_ADDC:
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is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
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if (flags & SRC2_IMM) {
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if (is_carry) {
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if (src2 >= 0)
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FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
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else {
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG));
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FAIL_IF(push_inst(compiler, OR | S(src1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
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}
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}
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst)));
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} else {
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if (is_carry)
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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/* dst may be the same as src1 or src2. */
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst)));
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}
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if (is_carry)
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FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
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FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(OTHER_FLAG) | D(dst), DR(dst)));
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if (!is_carry)
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return SLJIT_SUCCESS;
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/* Set ULESS_FLAG (dst == 0) && (OTHER_FLAG == 1). */
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FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(OTHER_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
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/* Set carry flag. */
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return push_inst(compiler, OR | SA(OTHER_FLAG) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG);
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case SLJIT_SUB:
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if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
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src2 = TMP_REG2;
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flags &= ~SRC2_IMM;
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}
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is_handled = 0;
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if (flags & SRC2_IMM) {
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if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
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FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
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is_handled = 1;
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}
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else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
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FAIL_IF(push_inst(compiler, SLTI | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
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is_handled = 1;
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}
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}
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if (!is_handled && GET_FLAG_TYPE(op) >= SLJIT_LESS && GET_FLAG_TYPE(op) <= SLJIT_SIG_LESS_EQUAL) {
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is_handled = 1;
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if (flags & SRC2_IMM) {
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
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src2 = TMP_REG2;
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flags &= ~SRC2_IMM;
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}
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if (GET_FLAG_TYPE(op) == SLJIT_LESS || GET_FLAG_TYPE(op) == SLJIT_GREATER_EQUAL) {
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FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
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}
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else if (GET_FLAG_TYPE(op) == SLJIT_GREATER || GET_FLAG_TYPE(op) == SLJIT_LESS_EQUAL)
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{
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FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
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}
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else if (GET_FLAG_TYPE(op) == SLJIT_SIG_LESS || GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER_EQUAL) {
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FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
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}
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else if (GET_FLAG_TYPE(op) == SLJIT_SIG_GREATER || GET_FLAG_TYPE(op) == SLJIT_SIG_LESS_EQUAL)
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{
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FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(OTHER_FLAG), OTHER_FLAG));
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}
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}
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if (is_handled) {
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if (flags & SRC2_IMM) {
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
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if (!(flags & UNUSED_DEST))
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return push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst));
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}
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else {
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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if (!(flags & UNUSED_DEST))
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return push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst));
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}
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return SLJIT_SUCCESS;
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}
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is_overflow = GET_FLAG_TYPE(op) == SLJIT_OVERFLOW;
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is_carry = GET_FLAG_TYPE(op) == GET_FLAG_TYPE(SLJIT_SET_CARRY);
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if (flags & SRC2_IMM) {
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if (is_overflow) {
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if (src2 >= 0)
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
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else
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FAIL_IF(push_inst(compiler, NOR | S(src1) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG));
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}
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else if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG));
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if (is_overflow || is_carry)
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FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(OTHER_FLAG) | IMM(src2), OTHER_FLAG));
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/* dst may be the same as src1 or src2. */
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if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst)));
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}
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else {
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if (is_overflow)
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FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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else if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG));
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if (is_overflow || is_carry)
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FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(OTHER_FLAG), OTHER_FLAG));
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/* dst may be the same as src1 or src2. */
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if (!(flags & UNUSED_DEST) || (op & VARIABLE_FLAG_MASK))
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst)));
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}
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if (!is_overflow)
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return SLJIT_SUCCESS;
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FAIL_IF(push_inst(compiler, SLL | TA(OTHER_FLAG) | D(TMP_REG1) | SH_IMM(31), DR(TMP_REG1)));
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FAIL_IF(push_inst(compiler, XOR | S(TMP_REG1) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG));
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FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(EQUAL_FLAG) | DA(OTHER_FLAG), OTHER_FLAG));
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if (op & SLJIT_SET_Z)
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FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG));
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return push_inst(compiler, SRL | TA(OTHER_FLAG) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG);
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case SLJIT_SUBC:
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if ((flags & SRC2_IMM) && src2 == SIMM_MIN) {
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2)));
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src2 = TMP_REG2;
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|
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_REG3] == 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) | D(TMP_REG3);
|
|
|
|
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);
|
|
}
|