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Diffstat (limited to 'sljit/sljitNativePPC_32.c')
| -rw-r--r-- | sljit/sljitNativePPC_32.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/sljit/sljitNativePPC_32.c b/sljit/sljitNativePPC_32.c new file mode 100644 index 0000000..b14b75c --- /dev/null +++ b/sljit/sljitNativePPC_32.c @@ -0,0 +1,269 @@ +/* + * 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(TMP_ZERO) | 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))); + } + else + FAIL_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); +} |