| /* |
| * 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) || (defined SLJIT_MIPS_R6 && SLJIT_MIPS_R6) |
| return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst)); |
| #else /* !SLJIT_MIPS_R1 && !SLJIT_MIPS_R6 */ |
| FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS)); |
| return push_inst(compiler, MFLO | D(dst), DR(dst)); |
| #endif /* SLJIT_MIPS_R1 || SLJIT_MIPS_R6 */ |
| } |
| #if (defined SLJIT_MIPS_R6 && SLJIT_MIPS_R6) |
| FAIL_IF(push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst))); |
| FAIL_IF(push_inst(compiler, MUH | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| #else /* !SLJIT_MIPS_R6 */ |
| 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))); |
| #endif /* SLJIT_MIPS_R6 */ |
| 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); |
| } |