| /* |
| * Stack-less Just-In-Time compiler |
| * |
| * Copyright 2009-2012 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. |
| */ |
| |
| static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si dst, sljit_sw imm) |
| { |
| if (imm <= SIMM_MAX && imm >= SIMM_MIN) |
| return push_inst(compiler, OR | D(dst) | S1(0) | IMM(imm), DR(dst)); |
| |
| FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((imm >> 10) & 0x3fffff), DR(dst))); |
| return (imm & 0x3ff) ? push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (imm & 0x3ff), DR(dst)) : SLJIT_SUCCESS; |
| } |
| |
| #define ARG2(flags, src2) ((flags & SRC2_IMM) ? IMM(src2) : S2(src2)) |
| |
| static SLJIT_INLINE sljit_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags, |
| sljit_si dst, sljit_si src1, sljit_sw src2) |
| { |
| SLJIT_COMPILE_ASSERT(ICC_IS_SET == SET_FLAGS, icc_is_set_and_set_flags_must_be_the_same); |
| |
| switch (op) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_UI: |
| case SLJIT_MOV_SI: |
| case SLJIT_MOV_P: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| if (dst != src2) |
| return push_inst(compiler, OR | D(dst) | S1(0) | S2(src2), DR(dst)); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_UB: |
| case SLJIT_MOV_SB: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) { |
| if (op == SLJIT_MOV_UB) |
| return push_inst(compiler, AND | D(dst) | S1(src2) | IMM(0xff), DR(dst)); |
| FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(24), DR(dst))); |
| return push_inst(compiler, SRA | D(dst) | S1(dst) | IMM(24), DR(dst)); |
| } |
| else if (dst != src2) |
| SLJIT_ASSERT_STOP(); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_UH: |
| case SLJIT_MOV_SH: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) { |
| FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(16), DR(dst))); |
| return push_inst(compiler, (op == SLJIT_MOV_SH ? SRA : SRL) | D(dst) | S1(dst) | IMM(16), DR(dst)); |
| } |
| else if (dst != src2) |
| SLJIT_ASSERT_STOP(); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_NOT: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| return push_inst(compiler, XNOR | (flags & SET_FLAGS) | D(dst) | S1(0) | S2(src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_CLZ: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM)); |
| /* sparc 32 does not support SLJIT_KEEP_FLAGS. Not sure I can fix this. */ |
| FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(src2) | S2(0), SET_FLAGS)); |
| FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2(src2), DR(TMP_REG1))); |
| FAIL_IF(push_inst(compiler, BICC | DA(0x1) | (7 & DISP_MASK), UNMOVABLE_INS)); |
| FAIL_IF(push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(0) | IMM(32), UNMOVABLE_INS | (flags & SET_FLAGS))); |
| FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(-1), DR(dst))); |
| |
| /* Loop. */ |
| FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(0), SET_FLAGS)); |
| FAIL_IF(push_inst(compiler, SLL | D(TMP_REG1) | S1(TMP_REG1) | IMM(1), DR(TMP_REG1))); |
| FAIL_IF(push_inst(compiler, BICC | DA(0xe) | (-2 & DISP_MASK), UNMOVABLE_INS)); |
| return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(dst) | IMM(1), UNMOVABLE_INS | (flags & SET_FLAGS)); |
| |
| case SLJIT_ADD: |
| return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_ADDC: |
| return push_inst(compiler, ADDC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_SUB: |
| return push_inst(compiler, SUB | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_SUBC: |
| return push_inst(compiler, SUBC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_MUL: |
| FAIL_IF(push_inst(compiler, SMUL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst))); |
| if (!(flags & SET_FLAGS)) |
| return SLJIT_SUCCESS; |
| FAIL_IF(push_inst(compiler, SRA | D(TMP_REG1) | S1(dst) | IMM(31), DR(TMP_REG1))); |
| FAIL_IF(push_inst(compiler, RDY | D(TMP_LINK), DR(TMP_LINK))); |
| return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_LINK), MOVABLE_INS | SET_FLAGS); |
| |
| case SLJIT_AND: |
| return push_inst(compiler, AND | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_OR: |
| return push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_XOR: |
| return push_inst(compiler, XOR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS)); |
| |
| case SLJIT_SHL: |
| FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst))); |
| return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS); |
| |
| case SLJIT_LSHR: |
| FAIL_IF(push_inst(compiler, SRL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst))); |
| return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS); |
| |
| case SLJIT_ASHR: |
| FAIL_IF(push_inst(compiler, SRA | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst))); |
| return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS); |
| } |
| |
| SLJIT_ASSERT_STOP(); |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw init_value) |
| { |
| FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((init_value >> 10) & 0x3fffff), DR(dst))); |
| return push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (init_value & 0x3ff), DR(dst)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) |
| { |
| sljit_ins *inst = (sljit_ins*)addr; |
| |
| inst[0] = (inst[0] & 0xffc00000) | ((new_addr >> 10) & 0x3fffff); |
| inst[1] = (inst[1] & 0xfffffc00) | (new_addr & 0x3ff); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant) |
| { |
| sljit_ins *inst = (sljit_ins*)addr; |
| |
| inst[0] = (inst[0] & 0xffc00000) | ((new_constant >> 10) & 0x3fffff); |
| inst[1] = (inst[1] & 0xfffffc00) | (new_constant & 0x3ff); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |