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(root)/trunk/src/extra/pcre/sljit/sljitNativePPC_32.c @ 63243 – Rev
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/** 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.*//* ppc 32-bit arch dependent functions. */static sljit_si load_immediate(struct sljit_compiler *compiler, sljit_si reg, sljit_sw imm){if (imm <= SIMM_MAX && imm >= SIMM_MIN)return push_inst(compiler, ADDI | D(reg) | A(0) | IMM(imm));if (!(imm & ~0xffff))return push_inst(compiler, ORI | S(ZERO_REG) | A(reg) | IMM(imm));FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(imm >> 16)));return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;}#define INS_CLEAR_LEFT(dst, src, from) \(RLWINM | S(src) | A(dst) | ((from) << 6) | (31 << 1))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_si src2){switch (op) {case SLJIT_MOV:case SLJIT_MOV_UI:case SLJIT_MOV_SI:case SLJIT_MOV_P:SLJIT_ASSERT(src1 == TMP_REG1);if (dst != src2)return push_inst(compiler, OR | S(src2) | A(dst) | B(src2));return SLJIT_SUCCESS;case SLJIT_MOV_UB:case SLJIT_MOV_SB:SLJIT_ASSERT(src1 == TMP_REG1);if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {if (op == SLJIT_MOV_SB)return push_inst(compiler, EXTSB | S(src2) | A(dst));return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 24));}else if ((flags & REG_DEST) && op == SLJIT_MOV_SB)return push_inst(compiler, EXTSB | S(src2) | A(dst));else {SLJIT_ASSERT(dst == src2);}return SLJIT_SUCCESS;case SLJIT_MOV_UH:case SLJIT_MOV_SH:SLJIT_ASSERT(src1 == TMP_REG1);if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {if (op == SLJIT_MOV_SH)return push_inst(compiler, EXTSH | S(src2) | A(dst));return push_inst(compiler, INS_CLEAR_LEFT(dst, src2, 16));}else {SLJIT_ASSERT(dst == src2);}return SLJIT_SUCCESS;case SLJIT_NOT:SLJIT_ASSERT(src1 == TMP_REG1);return push_inst(compiler, NOR | RC(flags) | S(src2) | A(dst) | B(src2));case SLJIT_NEG:SLJIT_ASSERT(src1 == TMP_REG1);return push_inst(compiler, NEG | OERC(flags) | D(dst) | A(src2));case SLJIT_CLZ:SLJIT_ASSERT(src1 == TMP_REG1);return push_inst(compiler, CNTLZW | RC(flags) | S(src2) | A(dst));case SLJIT_ADD:if (flags & ALT_FORM1) {/* Flags does not set: BIN_IMM_EXTS unnecessary. */SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ADDI | D(dst) | A(src1) | compiler->imm);}if (flags & ALT_FORM2) {/* Flags does not set: BIN_IMM_EXTS unnecessary. */SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);}if (flags & ALT_FORM3) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ADDIC | D(dst) | A(src1) | compiler->imm);}if (flags & ALT_FORM4) {/* Flags does not set: BIN_IMM_EXTS unnecessary. */FAIL_IF(push_inst(compiler, ADDI | D(dst) | A(src1) | (compiler->imm & 0xffff)));return push_inst(compiler, ADDIS | D(dst) | A(dst) | (((compiler->imm >> 16) & 0xffff) + ((compiler->imm >> 15) & 0x1)));}if (!(flags & ALT_SET_FLAGS))return push_inst(compiler, ADD | D(dst) | A(src1) | B(src2));return push_inst(compiler, ADDC | OERC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2));case SLJIT_ADDC:if (flags & ALT_FORM1) {FAIL_IF(push_inst(compiler, MFXER | D(0)));FAIL_IF(push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2)));return push_inst(compiler, MTXER | S(0));}return push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2));case SLJIT_SUB:if (flags & ALT_FORM1) {/* Flags does not set: BIN_IMM_EXTS unnecessary. */SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, SUBFIC | D(dst) | A(src1) | compiler->imm);}if (flags & (ALT_FORM2 | ALT_FORM3)) {SLJIT_ASSERT(src2 == TMP_REG2);if (flags & ALT_FORM2)FAIL_IF(push_inst(compiler, CMPI | CRD(0) | A(src1) | compiler->imm));if (flags & ALT_FORM3)return push_inst(compiler, CMPLI | CRD(4) | A(src1) | compiler->imm);return SLJIT_SUCCESS;}if (flags & (ALT_FORM4 | ALT_FORM5)) {if (flags & ALT_FORM4)FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));if (flags & ALT_FORM5)FAIL_IF(push_inst(compiler, CMP | CRD(0) | A(src1) | B(src2)));return SLJIT_SUCCESS;}if (!(flags & ALT_SET_FLAGS))return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));if (flags & ALT_FORM6)FAIL_IF(push_inst(compiler, CMPL | CRD(4) | A(src1) | B(src2)));return push_inst(compiler, SUBFC | OERC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));case SLJIT_SUBC:if (flags & ALT_FORM1) {FAIL_IF(push_inst(compiler, MFXER | D(0)));FAIL_IF(push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1)));return push_inst(compiler, MTXER | S(0));}return push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1));case SLJIT_MUL:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, MULLI | D(dst) | A(src1) | compiler->imm);}return push_inst(compiler, MULLW | OERC(flags) | D(dst) | A(src2) | B(src1));case SLJIT_AND:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ANDI | S(src1) | A(dst) | compiler->imm);}if (flags & ALT_FORM2) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ANDIS | S(src1) | A(dst) | compiler->imm);}return push_inst(compiler, AND | RC(flags) | S(src1) | A(dst) | B(src2));case SLJIT_OR:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ORI | S(src1) | A(dst) | compiler->imm);}if (flags & ALT_FORM2) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, ORIS | S(src1) | A(dst) | compiler->imm);}if (flags & ALT_FORM3) {SLJIT_ASSERT(src2 == TMP_REG2);FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(compiler->imm)));return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));}return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));case SLJIT_XOR:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, XORI | S(src1) | A(dst) | compiler->imm);}if (flags & ALT_FORM2) {SLJIT_ASSERT(src2 == TMP_REG2);return push_inst(compiler, XORIS | S(src1) | A(dst) | compiler->imm);}if (flags & ALT_FORM3) {SLJIT_ASSERT(src2 == TMP_REG2);FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(compiler->imm)));return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(compiler->imm >> 16));}return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));case SLJIT_SHL:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);compiler->imm &= 0x1f;return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11) | ((31 - compiler->imm) << 1));}return push_inst(compiler, SLW | RC(flags) | S(src1) | A(dst) | B(src2));case SLJIT_LSHR:if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);compiler->imm &= 0x1f;return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | (((32 - compiler->imm) & 0x1f) << 11) | (compiler->imm << 6) | (31 << 1));}return push_inst(compiler, SRW | RC(flags) | S(src1) | A(dst) | B(src2));case SLJIT_ASHR:if (flags & ALT_FORM3)FAIL_IF(push_inst(compiler, MFXER | D(0)));if (flags & ALT_FORM1) {SLJIT_ASSERT(src2 == TMP_REG2);compiler->imm &= 0x1f;FAIL_IF(push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (compiler->imm << 11)));}elseFAIL_IF(push_inst(compiler, SRAW | RC(flags) | S(src1) | A(dst) | B(src2)));return (flags & ALT_FORM3) ? push_inst(compiler, MTXER | S(0)) : SLJIT_SUCCESS;}SLJIT_ASSERT_STOP();return SLJIT_SUCCESS;}static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si reg, sljit_sw init_value){FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(init_value >> 16)));return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value));}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] & 0xffff0000) | ((new_addr >> 16) & 0xffff);inst[1] = (inst[1] & 0xffff0000) | (new_addr & 0xffff);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] & 0xffff0000) | ((new_constant >> 16) & 0xffff);inst[1] = (inst[1] & 0xffff0000) | (new_constant & 0xffff);SLJIT_CACHE_FLUSH(inst, inst + 2);}