| /* |
| * 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 64-bit arch dependent functions. */ |
| |
| static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst_ar, sljit_sw imm) |
| { |
| sljit_s32 shift = 32; |
| sljit_s32 shift2; |
| sljit_s32 inv = 0; |
| sljit_ins ins; |
| sljit_uw uimm; |
| |
| 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); |
| |
| if (imm <= 0x7fffffffl && imm >= -0x80000000l) { |
| 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; |
| } |
| |
| /* Zero extended number. */ |
| uimm = imm; |
| if (imm < 0) { |
| uimm = ~imm; |
| inv = 1; |
| } |
| |
| while (!(uimm & 0xff00000000000000l)) { |
| shift -= 8; |
| uimm <<= 8; |
| } |
| |
| if (!(uimm & 0xf000000000000000l)) { |
| shift -= 4; |
| uimm <<= 4; |
| } |
| |
| if (!(uimm & 0xc000000000000000l)) { |
| shift -= 2; |
| uimm <<= 2; |
| } |
| |
| if ((sljit_sw)uimm < 0) { |
| uimm >>= 1; |
| shift += 1; |
| } |
| SLJIT_ASSERT(((uimm & 0xc000000000000000l) == 0x4000000000000000l) && (shift > 0) && (shift <= 32)); |
| |
| if (inv) |
| uimm = ~uimm; |
| |
| FAIL_IF(push_inst(compiler, LUI | TA(dst_ar) | IMM(uimm >> 48), dst_ar)); |
| if (uimm & 0x0000ffff00000000l) |
| FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 32), dst_ar)); |
| |
| imm &= (1l << shift) - 1; |
| if (!(imm & ~0xffff)) { |
| ins = (shift == 32) ? DSLL32 : DSLL; |
| if (shift < 32) |
| ins |= SH_IMM(shift); |
| FAIL_IF(push_inst(compiler, ins | TA(dst_ar) | DA(dst_ar), dst_ar)); |
| return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar); |
| } |
| |
| /* Double shifts needs to be performed. */ |
| uimm <<= 32; |
| shift2 = shift - 16; |
| |
| while (!(uimm & 0xf000000000000000l)) { |
| shift2 -= 4; |
| uimm <<= 4; |
| } |
| |
| if (!(uimm & 0xc000000000000000l)) { |
| shift2 -= 2; |
| uimm <<= 2; |
| } |
| |
| if (!(uimm & 0x8000000000000000l)) { |
| shift2--; |
| uimm <<= 1; |
| } |
| |
| SLJIT_ASSERT((uimm & 0x8000000000000000l) && (shift2 > 0) && (shift2 <= 16)); |
| |
| FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift - shift2), dst_ar)); |
| FAIL_IF(push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(uimm >> 48), dst_ar)); |
| FAIL_IF(push_inst(compiler, DSLL | TA(dst_ar) | DA(dst_ar) | SH_IMM(shift2), dst_ar)); |
| |
| imm &= (1l << shift2) - 1; |
| return !(imm & 0xffff) ? SLJIT_SUCCESS : push_inst(compiler, ORI | SA(dst_ar) | TA(dst_ar) | IMM(imm), dst_ar); |
| } |
| |
| #define SELECT_OP(a, b) \ |
| (!(op & SLJIT_I32_OP) ? a : b) |
| |
| #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_dimm, op_dimm32, op_imm, op_dv, op_v) \ |
| if (flags & SRC2_IMM) { \ |
| if (src2 >= 32) { \ |
| SLJIT_ASSERT(!(op & SLJIT_I32_OP)); \ |
| ins = op_dimm32; \ |
| src2 -= 32; \ |
| } \ |
| else \ |
| ins = (op & SLJIT_I32_OP) ? op_imm : op_dimm; \ |
| if (op & SLJIT_SET_Z) \ |
| FAIL_IF(push_inst(compiler, ins | T(src1) | DA(EQUAL_FLAG) | SH_IMM(src2), EQUAL_FLAG)); \ |
| if (!(flags & UNUSED_DEST)) \ |
| FAIL_IF(push_inst(compiler, ins | T(src1) | D(dst) | SH_IMM(src2), DR(dst))); \ |
| } \ |
| else { \ |
| ins = (op & SLJIT_I32_OP) ? op_v : op_dv; \ |
| if (op & SLJIT_SET_Z) \ |
| FAIL_IF(push_inst(compiler, ins | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \ |
| if (!(flags & UNUSED_DEST)) \ |
| FAIL_IF(push_inst(compiler, ins | 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_ins ins; |
| sljit_s32 is_overflow, is_carry, is_handled; |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_P: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| if (dst != src2) |
| return push_inst(compiler, SELECT_OP(DADDU, 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) { |
| FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(24), DR(dst))); |
| return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(24), DR(dst)); |
| } |
| 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) { |
| FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(16), DR(dst))); |
| return push_inst(compiler, DSRA32 | T(dst) | D(dst) | SH_IMM(16), DR(dst)); |
| } |
| return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst)); |
| } |
| else { |
| SLJIT_ASSERT(dst == src2); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_U32: |
| SLJIT_ASSERT(!(op & SLJIT_I32_OP)); |
| FAIL_IF(push_inst(compiler, DSLL32 | T(src2) | D(dst) | SH_IMM(0), DR(dst))); |
| return push_inst(compiler, DSRL32 | T(dst) | D(dst) | SH_IMM(0), DR(dst)); |
| |
| case SLJIT_MOV_S32: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| return push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(0), DR(dst)); |
| |
| 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_REV && SLJIT_MIPS_REV >= 1) |
| if (op & SLJIT_SET_Z) |
| FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| if (!(flags & UNUSED_DEST)) |
| FAIL_IF(push_inst(compiler, SELECT_OP(DCLZ, CLZ) | S(src2) | T(dst) | D(dst), DR(dst))); |
| #else /* SLJIT_MIPS_REV < 1 */ |
| if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) { |
| FAIL_IF(push_inst(compiler, SELECT_OP(DSRL32, 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, SELECT_OP(DADDU, 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((op & SLJIT_I32_OP) ? 32 : 64), UNMOVABLE_INS)); |
| FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | SA(0) | T(dst) | IMM(-1), DR(dst))); |
| /* Loop for searching the highest bit. */ |
| FAIL_IF(push_inst(compiler, SELECT_OP(DADDIU, 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, SELECT_OP(DSLL, SLL) | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), UNMOVABLE_INS)); |
| #endif /* SLJIT_MIPS_REV >= 1 */ |
| 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDU, 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, SELECT_OP(DADDU, 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, SELECT_OP(DSLL32, 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, SELECT_OP(DADDU, ADDU) | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| return push_inst(compiler, SELECT_OP(DSRL32, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDU, 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, SELECT_OP(DADDU, 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, SELECT_OP(DADDIU, ADDIU) | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG)); |
| if (!(flags & UNUSED_DEST)) |
| return push_inst(compiler, SELECT_OP(DADDIU, ADDIU) | S(src1) | T(dst) | IMM(-src2), DR(dst)); |
| } |
| else { |
| if (op & SLJIT_SET_Z) |
| FAIL_IF(push_inst(compiler, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| if (!(flags & UNUSED_DEST)) |
| return push_inst(compiler, SELECT_OP(DSUBU, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DSUBU, 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, SELECT_OP(DSUBU, SUBU) | S(src1) | T(src2) | D(dst), DR(dst))); |
| } |
| |
| if (!is_overflow) |
| return SLJIT_SUCCESS; |
| FAIL_IF(push_inst(compiler, SELECT_OP(DSLL32, 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, SELECT_OP(DADDU, ADDU) | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| return push_inst(compiler, SELECT_OP(DSRL32, 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, SELECT_OP(DADDIU, 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, SELECT_OP(DSUBU, 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, SELECT_OP(DSUBU, 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_REV && SLJIT_MIPS_REV >= 6) |
| return push_inst(compiler, SELECT_OP(DMUL, MUL) | S(src1) | T(src2) | D(dst), DR(dst)); |
| #elif (defined SLJIT_MIPS_REV && SLJIT_MIPS_REV >= 1) |
| if (op & SLJIT_I32_OP) |
| return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst)); |
| FAIL_IF(push_inst(compiler, DMULT | S(src1) | T(src2), MOVABLE_INS)); |
| return push_inst(compiler, MFLO | D(dst), DR(dst)); |
| #else /* SLJIT_MIPS_REV < 1 */ |
| FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, MULT) | S(src1) | T(src2), MOVABLE_INS)); |
| return push_inst(compiler, MFLO | D(dst), DR(dst)); |
| #endif /* SLJIT_MIPS_REV >= 6 */ |
| } |
| |
| #if (defined SLJIT_MIPS_REV && SLJIT_MIPS_REV >= 6) |
| FAIL_IF(push_inst(compiler, SELECT_OP(DMUL, MUL) | S(src1) | T(src2) | D(dst), DR(dst))); |
| FAIL_IF(push_inst(compiler, SELECT_OP(DMUH, MUH) | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| #else /* SLJIT_MIPS_REV < 6 */ |
| FAIL_IF(push_inst(compiler, SELECT_OP(DMULT, 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_REV >= 6 */ |
| FAIL_IF(push_inst(compiler, SELECT_OP(DSRA32, SRA) | T(dst) | DA(OTHER_FLAG) | SH_IMM(31), OTHER_FLAG)); |
| return push_inst(compiler, SELECT_OP(DSUBU, 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(DSLL, DSLL32, SLL, DSLLV, SLLV); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_LSHR: |
| EMIT_SHIFT(DSRL, DSRL32, SRL, DSRLV, SRLV); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_ASHR: |
| EMIT_SHIFT(DSRA, DSRA32, SRA, DSRAV, 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 >> 48), DR(dst))); |
| FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 32), DR(dst))); |
| FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(16), DR(dst))); |
| FAIL_IF(push_inst(compiler, ORI | S(dst) | T(dst) | IMM(init_value >> 16), DR(dst))); |
| FAIL_IF(push_inst(compiler, DSLL | T(dst) | D(dst) | SH_IMM(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; |
| SLJIT_UNUSED_ARG(executable_offset); |
| |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 6, 0); |
| inst[0] = (inst[0] & 0xffff0000) | ((new_target >> 48) & 0xffff); |
| inst[1] = (inst[1] & 0xffff0000) | ((new_target >> 32) & 0xffff); |
| inst[3] = (inst[3] & 0xffff0000) | ((new_target >> 16) & 0xffff); |
| inst[5] = (inst[5] & 0xffff0000) | (new_target & 0xffff); |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 6, 1); |
| inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 6); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset) |
| { |
| sljit_set_jump_addr(addr, new_constant, executable_offset); |
| } |
| |
| static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_ins *ins_ptr) |
| { |
| sljit_s32 arg_count = 0; |
| sljit_s32 word_arg_count = 0; |
| sljit_s32 float_arg_count = 0; |
| sljit_s32 types = 0; |
| sljit_ins prev_ins = NOP; |
| sljit_ins ins = NOP; |
| |
| 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: |
| case SLJIT_ARG_TYPE_F64: |
| arg_count++; |
| float_arg_count++; |
| break; |
| default: |
| arg_count++; |
| word_arg_count++; |
| break; |
| } |
| |
| arg_types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| while (types) { |
| switch (types & SLJIT_DEF_MASK) { |
| case SLJIT_ARG_TYPE_F32: |
| if (arg_count != float_arg_count) |
| ins = MOV_S | FMT_S | FS(float_arg_count) | FD(arg_count); |
| else if (arg_count == 1) |
| ins = MOV_S | FMT_S | FS(SLJIT_FR0) | FD(TMP_FREG1); |
| arg_count--; |
| float_arg_count--; |
| break; |
| case SLJIT_ARG_TYPE_F64: |
| if (arg_count != float_arg_count) |
| ins = MOV_S | FMT_D | FS(float_arg_count) | FD(arg_count); |
| else if (arg_count == 1) |
| ins = MOV_S | FMT_D | FS(SLJIT_FR0) | FD(TMP_FREG1); |
| arg_count--; |
| float_arg_count--; |
| break; |
| default: |
| if (arg_count != word_arg_count) |
| ins = DADDU | S(word_arg_count) | TA(0) | D(arg_count); |
| else if (arg_count == 1) |
| ins = DADDU | 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; |
| } |
| |
| *ins_ptr = prev_ins; |
| |
| 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)); |
| |
| 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, DADDU | 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)); |
| return push_inst(compiler, ins, UNMOVABLE_INS); |
| } |