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ph10 |
662 |
/* |
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* Stack-less Just-In-Time compiler |
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* |
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* Copyright 2009-2010 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 int load_immediate(struct sljit_compiler *compiler, int dst_ar, sljit_w 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_E) \ |
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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 (CHECK_FLAGS(SLJIT_SET_E)) \ |
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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_E) \ |
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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 (CHECK_FLAGS(SLJIT_SET_E)) \ |
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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_norm) \ |
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if (flags & SRC2_IMM) { \ |
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if (op & SLJIT_SET_E) \ |
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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 (CHECK_FLAGS(SLJIT_SET_E)) \ |
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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_E) \ |
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FAIL_IF(push_inst(compiler, op_norm | S(src2) | T(src1) | DA(EQUAL_FLAG), EQUAL_FLAG)); \ |
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if (CHECK_FLAGS(SLJIT_SET_E)) \ |
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FAIL_IF(push_inst(compiler, op_norm | S(src2) | T(src1) | D(dst), DR(dst))); \ |
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} |
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static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags, |
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int dst, int src1, sljit_w src2) |
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{ |
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int overflow_ra = 0; |
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switch (GET_OPCODE(op)) { |
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case SLJIT_ADD: |
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if (flags & SRC2_IMM) { |
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if (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1)); |
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if (src2 < 0) |
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FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1)); |
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} |
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if (op & SLJIT_SET_E) |
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(src2), EQUAL_FLAG)); |
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if (op & SLJIT_SET_C) { |
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if (src2 >= 0) |
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FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG)); |
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else { |
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG)); |
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FAIL_IF(push_inst(compiler, OR | S(src1) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_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 (CHECK_FLAGS(SLJIT_SET_E)) |
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(src2), DR(dst))); |
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if (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, SRL | T(dst) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG)); |
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if (src2 < 0) |
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FAIL_IF(push_inst(compiler, XORI | SA(OVERFLOW_FLAG) | TA(OVERFLOW_FLAG) | IMM(1), OVERFLOW_FLAG)); |
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} |
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} |
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else { |
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if (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1)); |
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FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1)); |
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if (src1 != dst) |
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overflow_ra = DR(src1); |
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else if (src2 != dst) |
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overflow_ra = DR(src2); |
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else { |
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/* Rare ocasion. */ |
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2)); |
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overflow_ra = TMP_EREG2; |
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} |
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} |
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if (op & SLJIT_SET_E) |
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
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if (op & SLJIT_SET_C) |
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG)); |
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/* dst may be the same as src1 or src2. */ |
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if (CHECK_FLAGS(SLJIT_SET_E)) |
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | T(src2) | D(dst), DR(dst))); |
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if (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG)); |
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FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG)); |
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} |
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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 (op & SLJIT_SET_C) |
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FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(ULESS_FLAG) | DA(ULESS_FLAG), ULESS_FLAG)); |
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if (op & SLJIT_SET_O) |
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return push_inst(compiler, MOVN | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG); |
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return SLJIT_SUCCESS; |
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case SLJIT_ADDC: |
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if (flags & SRC2_IMM) { |
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if (op & SLJIT_SET_C) { |
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if (src2 >= 0) |
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FAIL_IF(push_inst(compiler, ORI | S(src1) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1)); |
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else { |
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | TA(TMP_EREG1) | IMM(src2), TMP_EREG1)); |
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FAIL_IF(push_inst(compiler, OR | S(src1) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1)); |
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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 (op & SLJIT_SET_C) |
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FAIL_IF(push_inst(compiler, OR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1)); |
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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 (op & SLJIT_SET_C) |
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FAIL_IF(push_inst(compiler, SLTU | S(dst) | TA(TMP_EREG1) | DA(TMP_EREG1), TMP_EREG1)); |
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FAIL_IF(push_inst(compiler, ADDU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst))); |
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if (!(op & SLJIT_SET_C)) |
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return SLJIT_SUCCESS; |
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/* Set TMP_EREG2 (dst == 0) && (ULESS_FLAG == 1). */ |
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FAIL_IF(push_inst(compiler, SLTIU | S(dst) | TA(TMP_EREG2) | IMM(1), TMP_EREG2)); |
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FAIL_IF(push_inst(compiler, AND | SA(TMP_EREG2) | TA(ULESS_FLAG) | DA(TMP_EREG2), TMP_EREG2)); |
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/* Set carry flag. */ |
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return push_inst(compiler, OR | SA(TMP_EREG2) | TA(TMP_EREG1) | DA(ULESS_FLAG), ULESS_FLAG); |
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case SLJIT_SUB: |
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if ((flags & SRC2_IMM) && ((op & (SLJIT_SET_S | SLJIT_SET_U)) || 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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if (flags & SRC2_IMM) { |
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if (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, SRL | T(src1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1)); |
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if (src2 < 0) |
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FAIL_IF(push_inst(compiler, XORI | SA(TMP_EREG1) | TA(TMP_EREG1) | IMM(1), TMP_EREG1)); |
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if (src1 != dst) |
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overflow_ra = DR(src1); |
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else { |
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/* Rare ocasion. */ |
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2)); |
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overflow_ra = TMP_EREG2; |
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} |
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} |
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if (op & SLJIT_SET_E) |
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | TA(EQUAL_FLAG) | IMM(-src2), EQUAL_FLAG)); |
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if (op & SLJIT_SET_C) |
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FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(ULESS_FLAG) | IMM(src2), ULESS_FLAG)); |
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/* dst may be the same as src1 or src2. */ |
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if (CHECK_FLAGS(SLJIT_SET_E)) |
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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 (op & SLJIT_SET_O) { |
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FAIL_IF(push_inst(compiler, XOR | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1)); |
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FAIL_IF(push_inst(compiler, SRL | TA(TMP_EREG1) | DA(TMP_EREG1) | SH_IMM(31), TMP_EREG1)); |
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if (src1 != dst) |
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overflow_ra = DR(src1); |
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else { |
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/* Rare ocasion. */ |
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FAIL_IF(push_inst(compiler, ADDU | S(src1) | TA(0) | DA(TMP_EREG2), TMP_EREG2)); |
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overflow_ra = TMP_EREG2; |
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} |
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} |
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if (op & SLJIT_SET_E) |
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
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if (op & (SLJIT_SET_U | SLJIT_SET_C)) |
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FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(ULESS_FLAG), ULESS_FLAG)); |
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if (op & SLJIT_SET_U) |
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FAIL_IF(push_inst(compiler, SLTU | S(src2) | T(src1) | DA(UGREATER_FLAG), UGREATER_FLAG)); |
| 211 |
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if (op & SLJIT_SET_S) { |
| 212 |
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FAIL_IF(push_inst(compiler, SLT | S(src1) | T(src2) | DA(LESS_FLAG), LESS_FLAG)); |
| 213 |
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FAIL_IF(push_inst(compiler, SLT | S(src2) | T(src1) | DA(GREATER_FLAG), GREATER_FLAG)); |
| 214 |
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} |
| 215 |
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/* dst may be the same as src1 or src2. */ |
| 216 |
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if (CHECK_FLAGS(SLJIT_SET_E | SLJIT_SET_S | SLJIT_SET_U | SLJIT_SET_C)) |
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst))); |
| 218 |
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} |
| 219 |
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if (op & SLJIT_SET_O) { |
| 221 |
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FAIL_IF(push_inst(compiler, XOR | S(dst) | TA(overflow_ra) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG)); |
| 222 |
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FAIL_IF(push_inst(compiler, SRL | TA(OVERFLOW_FLAG) | DA(OVERFLOW_FLAG) | SH_IMM(31), OVERFLOW_FLAG)); |
| 223 |
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return push_inst(compiler, MOVZ | SA(0) | TA(TMP_EREG1) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG); |
| 224 |
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} |
| 225 |
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return SLJIT_SUCCESS; |
| 226 |
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| 227 |
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case SLJIT_SUBC: |
| 228 |
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if ((flags & SRC2_IMM) && src2 == SIMM_MIN) { |
| 229 |
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FAIL_IF(push_inst(compiler, ADDIU | SA(0) | T(TMP_REG2) | IMM(src2), DR(TMP_REG2))); |
| 230 |
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src2 = TMP_REG2; |
| 231 |
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flags &= ~SRC2_IMM; |
| 232 |
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} |
| 233 |
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| 234 |
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if (flags & SRC2_IMM) { |
| 235 |
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if (op & SLJIT_SET_C) |
| 236 |
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FAIL_IF(push_inst(compiler, SLTIU | S(src1) | TA(TMP_EREG1) | IMM(-src2), TMP_EREG1)); |
| 237 |
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/* dst may be the same as src1 or src2. */ |
| 238 |
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FAIL_IF(push_inst(compiler, ADDIU | S(src1) | T(dst) | IMM(-src2), DR(dst))); |
| 239 |
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} |
| 240 |
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else { |
| 241 |
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if (op & SLJIT_SET_C) |
| 242 |
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FAIL_IF(push_inst(compiler, SLTU | S(src1) | T(src2) | DA(TMP_EREG1), TMP_EREG1)); |
| 243 |
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/* dst may be the same as src1 or src2. */ |
| 244 |
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FAIL_IF(push_inst(compiler, SUBU | S(src1) | T(src2) | D(dst), DR(dst))); |
| 245 |
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} |
| 246 |
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| 247 |
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if (op & SLJIT_SET_C) |
| 248 |
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FAIL_IF(push_inst(compiler, MOVZ | SA(ULESS_FLAG) | T(dst) | DA(TMP_EREG1), TMP_EREG1)); |
| 249 |
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| 250 |
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FAIL_IF(push_inst(compiler, SUBU | S(dst) | TA(ULESS_FLAG) | D(dst), DR(dst))); |
| 251 |
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| 252 |
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if (op & SLJIT_SET_C) |
| 253 |
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FAIL_IF(push_inst(compiler, ADDU | SA(TMP_EREG1) | TA(0) | DA(ULESS_FLAG), ULESS_FLAG)); |
| 254 |
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| 255 |
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return SLJIT_SUCCESS; |
| 256 |
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| 257 |
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case SLJIT_MUL: |
| 258 |
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SLJIT_ASSERT(!(flags & SRC2_IMM)); |
| 259 |
zherczeg |
714 |
if (!(op & SLJIT_SET_O)) { |
| 260 |
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#if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64) |
| 261 |
ph10 |
662 |
return push_inst(compiler, MUL | S(src1) | T(src2) | D(dst), DR(dst)); |
| 262 |
zherczeg |
714 |
#else |
| 263 |
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FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS)); |
| 264 |
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return push_inst(compiler, MFLO | D(dst), DR(dst)); |
| 265 |
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#endif |
| 266 |
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} |
| 267 |
ph10 |
662 |
FAIL_IF(push_inst(compiler, MULT | S(src1) | T(src2), MOVABLE_INS)); |
| 268 |
|
|
FAIL_IF(push_inst(compiler, MFHI | DA(TMP_EREG1), TMP_EREG1)); |
| 269 |
|
|
FAIL_IF(push_inst(compiler, MFLO | D(dst), DR(dst))); |
| 270 |
|
|
FAIL_IF(push_inst(compiler, SRA | T(dst) | DA(TMP_EREG2) | SH_IMM(31), TMP_EREG2)); |
| 271 |
|
|
return push_inst(compiler, SUBU | SA(TMP_EREG1) | TA(TMP_EREG2) | DA(OVERFLOW_FLAG), OVERFLOW_FLAG); |
| 272 |
|
|
|
| 273 |
|
|
case SLJIT_AND: |
| 274 |
|
|
EMIT_LOGICAL(ANDI, AND); |
| 275 |
|
|
return SLJIT_SUCCESS; |
| 276 |
|
|
|
| 277 |
|
|
case SLJIT_OR: |
| 278 |
|
|
EMIT_LOGICAL(ORI, OR); |
| 279 |
|
|
return SLJIT_SUCCESS; |
| 280 |
|
|
|
| 281 |
|
|
case SLJIT_XOR: |
| 282 |
|
|
EMIT_LOGICAL(XORI, XOR); |
| 283 |
|
|
return SLJIT_SUCCESS; |
| 284 |
|
|
|
| 285 |
|
|
case SLJIT_SHL: |
| 286 |
|
|
EMIT_SHIFT(SLL, SLLV); |
| 287 |
|
|
return SLJIT_SUCCESS; |
| 288 |
|
|
|
| 289 |
|
|
case SLJIT_LSHR: |
| 290 |
|
|
EMIT_SHIFT(SRL, SRLV); |
| 291 |
|
|
return SLJIT_SUCCESS; |
| 292 |
|
|
|
| 293 |
|
|
case SLJIT_ASHR: |
| 294 |
|
|
EMIT_SHIFT(SRA, SRAV); |
| 295 |
|
|
return SLJIT_SUCCESS; |
| 296 |
|
|
|
| 297 |
|
|
case SLJIT_MOV: |
| 298 |
|
|
case SLJIT_MOV_UI: |
| 299 |
|
|
case SLJIT_MOV_SI: |
| 300 |
|
|
SLJIT_ASSERT(src1 == TMP_REG1); |
| 301 |
|
|
if (dst != src2) |
| 302 |
|
|
return push_inst(compiler, ADDU | S(src2) | TA(0) | D(dst), DR(dst)); |
| 303 |
|
|
return SLJIT_SUCCESS; |
| 304 |
|
|
|
| 305 |
|
|
case SLJIT_MOV_UB: |
| 306 |
|
|
case SLJIT_MOV_SB: |
| 307 |
|
|
SLJIT_ASSERT(src1 == TMP_REG1); |
| 308 |
|
|
if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) { |
| 309 |
zherczeg |
714 |
if (op == SLJIT_MOV_SB) { |
| 310 |
|
|
#if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64) |
| 311 |
ph10 |
662 |
return push_inst(compiler, SEB | T(src2) | D(dst), DR(dst)); |
| 312 |
zherczeg |
714 |
#else |
| 313 |
|
|
FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(24), DR(dst))); |
| 314 |
|
|
return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(24), DR(dst)); |
| 315 |
|
|
#endif |
| 316 |
|
|
} |
| 317 |
ph10 |
662 |
return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xff), DR(dst)); |
| 318 |
|
|
} |
| 319 |
|
|
else if (dst != src2) |
| 320 |
|
|
SLJIT_ASSERT_STOP(); |
| 321 |
|
|
return SLJIT_SUCCESS; |
| 322 |
|
|
|
| 323 |
|
|
case SLJIT_MOV_UH: |
| 324 |
|
|
case SLJIT_MOV_SH: |
| 325 |
|
|
SLJIT_ASSERT(src1 == TMP_REG1); |
| 326 |
|
|
if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) { |
| 327 |
zherczeg |
714 |
if (op == SLJIT_MOV_SH) { |
| 328 |
|
|
#if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64) |
| 329 |
ph10 |
662 |
return push_inst(compiler, SEH | T(src2) | D(dst), DR(dst)); |
| 330 |
zherczeg |
714 |
#else |
| 331 |
|
|
FAIL_IF(push_inst(compiler, SLL | T(src2) | D(dst) | SH_IMM(16), DR(dst))); |
| 332 |
|
|
return push_inst(compiler, SRA | T(dst) | D(dst) | SH_IMM(16), DR(dst)); |
| 333 |
|
|
#endif |
| 334 |
|
|
} |
| 335 |
ph10 |
662 |
return push_inst(compiler, ANDI | S(src2) | T(dst) | IMM(0xffff), DR(dst)); |
| 336 |
|
|
} |
| 337 |
|
|
else if (dst != src2) |
| 338 |
|
|
SLJIT_ASSERT_STOP(); |
| 339 |
|
|
return SLJIT_SUCCESS; |
| 340 |
|
|
|
| 341 |
|
|
case SLJIT_NOT: |
| 342 |
|
|
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| 343 |
|
|
if (op & SLJIT_SET_E) |
| 344 |
|
|
FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| 345 |
|
|
if (CHECK_FLAGS(SLJIT_SET_E)) |
| 346 |
|
|
FAIL_IF(push_inst(compiler, NOR | S(src2) | T(src2) | D(dst), DR(dst))); |
| 347 |
|
|
return SLJIT_SUCCESS; |
| 348 |
|
|
|
| 349 |
|
|
case SLJIT_CLZ: |
| 350 |
|
|
SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| 351 |
zherczeg |
714 |
#if (defined SLJIT_MIPS_32_64 && SLJIT_MIPS_32_64) |
| 352 |
ph10 |
662 |
if (op & SLJIT_SET_E) |
| 353 |
|
|
FAIL_IF(push_inst(compiler, CLZ | S(src2) | TA(EQUAL_FLAG) | DA(EQUAL_FLAG), EQUAL_FLAG)); |
| 354 |
|
|
if (CHECK_FLAGS(SLJIT_SET_E)) |
| 355 |
|
|
FAIL_IF(push_inst(compiler, CLZ | S(src2) | T(dst) | D(dst), DR(dst))); |
| 356 |
zherczeg |
714 |
#else |
| 357 |
|
|
if (SLJIT_UNLIKELY(flags & UNUSED_DEST)) { |
| 358 |
|
|
FAIL_IF(push_inst(compiler, SRL | T(src2) | DA(EQUAL_FLAG) | SH_IMM(31), EQUAL_FLAG)); |
| 359 |
|
|
return push_inst(compiler, XORI | SA(EQUAL_FLAG) | TA(EQUAL_FLAG) | IMM(1), EQUAL_FLAG); |
| 360 |
|
|
} |
| 361 |
|
|
/* Nearly all instructions are unmovable in the following sequence. */ |
| 362 |
|
|
FAIL_IF(push_inst(compiler, ADDU_W | S(src2) | TA(0) | D(TMP_REG1), DR(TMP_REG1))); |
| 363 |
|
|
/* Check zero. */ |
| 364 |
|
|
FAIL_IF(push_inst(compiler, BEQ | S(TMP_REG1) | TA(0) | IMM(6), UNMOVABLE_INS)); |
| 365 |
|
|
FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(32), UNMOVABLE_INS)); |
| 366 |
|
|
/* Check sign bit. */ |
| 367 |
|
|
FAIL_IF(push_inst(compiler, BLTZ | S(TMP_REG1) | IMM(4), UNMOVABLE_INS)); |
| 368 |
|
|
FAIL_IF(push_inst(compiler, ORI | SA(0) | T(dst) | IMM(0), UNMOVABLE_INS)); |
| 369 |
|
|
/* Loop for searching the highest bit. */ |
| 370 |
|
|
FAIL_IF(push_inst(compiler, SLL | T(TMP_REG1) | D(TMP_REG1) | SH_IMM(1), DR(TMP_REG1))); |
| 371 |
|
|
FAIL_IF(push_inst(compiler, BGEZ | S(TMP_REG1) | IMM(-2), UNMOVABLE_INS)); |
| 372 |
|
|
FAIL_IF(push_inst(compiler, ADDIU_W | S(dst) | T(dst) | IMM(1), UNMOVABLE_INS)); |
| 373 |
|
|
if (op & SLJIT_SET_E) |
| 374 |
|
|
return push_inst(compiler, ADDU_W | S(dst) | TA(0) | DA(EQUAL_FLAG), EQUAL_FLAG); |
| 375 |
|
|
#endif |
| 376 |
ph10 |
662 |
return SLJIT_SUCCESS; |
| 377 |
|
|
} |
| 378 |
|
|
|
| 379 |
|
|
SLJIT_ASSERT_STOP(); |
| 380 |
|
|
return SLJIT_SUCCESS; |
| 381 |
|
|
} |
| 382 |
|
|
|
| 383 |
|
|
static SLJIT_INLINE int emit_const(struct sljit_compiler *compiler, int reg, sljit_w init_value) |
| 384 |
|
|
{ |
| 385 |
|
|
FAIL_IF(push_inst(compiler, LUI | T(reg) | IMM(init_value >> 16), DR(reg))); |
| 386 |
|
|
return push_inst(compiler, ORI | S(reg) | T(reg) | IMM(init_value), DR(reg)); |
| 387 |
|
|
} |
| 388 |
|
|
|
| 389 |
zherczeg |
740 |
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) |
| 390 |
ph10 |
662 |
{ |
| 391 |
|
|
sljit_ins *inst = (sljit_ins*)addr; |
| 392 |
|
|
|
| 393 |
|
|
inst[0] = (inst[0] & 0xffff0000) | ((new_addr >> 16) & 0xffff); |
| 394 |
|
|
inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff); |
| 395 |
|
|
SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 396 |
|
|
} |
| 397 |
|
|
|
| 398 |
zherczeg |
740 |
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant) |
| 399 |
ph10 |
662 |
{ |
| 400 |
|
|
sljit_ins *inst = (sljit_ins*)addr; |
| 401 |
|
|
|
| 402 |
|
|
inst[0] = (inst[0] & 0xffff0000) | ((new_constant >> 16) & 0xffff); |
| 403 |
|
|
inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff); |
| 404 |
|
|
SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 405 |
|
|
} |
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