in pcre/sljit/sljitNativePPC_common.c [1455:1661]
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
sljit_s32 dst, sljit_sw dstw,
sljit_s32 src1, sljit_sw src1w,
sljit_s32 src2, sljit_sw src2w)
{
sljit_s32 flags = GET_FLAGS(op) ? ALT_SET_FLAGS : 0;
CHECK_ERROR();
CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
ADJUST_LOCAL_OFFSET(dst, dstw);
ADJUST_LOCAL_OFFSET(src1, src1w);
ADJUST_LOCAL_OFFSET(src2, src2w);
if ((src1 & SLJIT_IMM) && src1w == 0)
src1 = TMP_ZERO;
if ((src2 & SLJIT_IMM) && src2w == 0)
src2 = TMP_ZERO;
#if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
if (op & SLJIT_I32_OP) {
/* Most operations expect sign extended arguments. */
flags |= INT_DATA | SIGNED_DATA;
if (src1 & SLJIT_IMM)
src1w = (sljit_s32)(src1w);
if (src2 & SLJIT_IMM)
src2w = (sljit_s32)(src2w);
if (GET_FLAGS(op))
flags |= ALT_SIGN_EXT;
}
#endif
if (op & SLJIT_SET_O)
FAIL_IF(push_inst(compiler, MTXER | S(TMP_ZERO)));
if (src2 == TMP_REG2)
flags |= ALT_KEEP_CACHE;
switch (GET_OPCODE(op)) {
case SLJIT_ADD:
if (!GET_FLAGS(op) && ((src1 | src2) & SLJIT_IMM)) {
if (TEST_SL_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM1, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_SL_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM1, dst, dstw, src2, src2w, TMP_REG2, 0);
}
if (TEST_SH_IMM(src2, src2w)) {
compiler->imm = (src2w >> 16) & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM2, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_SH_IMM(src1, src1w)) {
compiler->imm = (src1w >> 16) & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM2, dst, dstw, src2, src2w, TMP_REG2, 0);
}
/* Range between -1 and -32768 is covered above. */
if (TEST_ADD_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffffffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM4, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_ADD_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffffffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM4, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
if (!(GET_FLAGS(op) & (SLJIT_SET_E | SLJIT_SET_O))) {
if (TEST_SL_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM3, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_SL_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM3, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
return emit_op(compiler, SLJIT_ADD, flags, dst, dstw, src1, src1w, src2, src2w);
case SLJIT_ADDC:
return emit_op(compiler, SLJIT_ADDC, flags | (!(op & SLJIT_KEEP_FLAGS) ? 0 : ALT_FORM1), dst, dstw, src1, src1w, src2, src2w);
case SLJIT_SUB:
if (!GET_FLAGS(op) && ((src1 | src2) & SLJIT_IMM)) {
if (TEST_SL_IMM(src2, -src2w)) {
compiler->imm = (-src2w) & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM1, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_SL_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffff;
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM1, dst, dstw, src2, src2w, TMP_REG2, 0);
}
if (TEST_SH_IMM(src2, -src2w)) {
compiler->imm = ((-src2w) >> 16) & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM2, dst, dstw, src1, src1w, TMP_REG2, 0);
}
/* Range between -1 and -32768 is covered above. */
if (TEST_ADD_IMM(src2, -src2w)) {
compiler->imm = -src2w & 0xffffffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM4, dst, dstw, src1, src1w, TMP_REG2, 0);
}
}
if (dst == SLJIT_UNUSED && (op & (SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S)) && !(op & (SLJIT_SET_O | SLJIT_SET_C))) {
if (!(op & SLJIT_SET_U)) {
/* We know ALT_SIGN_EXT is set if it is an SLJIT_I32_OP on 64 bit systems. */
if (TEST_SL_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffff;
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM2, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (GET_FLAGS(op) == SLJIT_SET_E && TEST_SL_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffff;
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM2, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
if (!(op & (SLJIT_SET_E | SLJIT_SET_S))) {
/* We know ALT_SIGN_EXT is set if it is an SLJIT_I32_OP on 64 bit systems. */
if (TEST_UL_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffff;
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM3, dst, dstw, src1, src1w, TMP_REG2, 0);
}
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM4, dst, dstw, src1, src1w, src2, src2w);
}
if ((src2 & SLJIT_IMM) && src2w >= 0 && src2w <= 0x7fff) {
compiler->imm = src2w;
return emit_op(compiler, SLJIT_SUB, flags | ALT_FORM2 | ALT_FORM3, dst, dstw, src1, src1w, TMP_REG2, 0);
}
return emit_op(compiler, SLJIT_SUB, flags | ((op & SLJIT_SET_U) ? ALT_FORM4 : 0) | ((op & (SLJIT_SET_E | SLJIT_SET_S)) ? ALT_FORM5 : 0), dst, dstw, src1, src1w, src2, src2w);
}
if (!(op & (SLJIT_SET_E | SLJIT_SET_U | SLJIT_SET_S | SLJIT_SET_O))) {
if (TEST_SL_IMM(src2, -src2w)) {
compiler->imm = (-src2w) & 0xffff;
return emit_op(compiler, SLJIT_ADD, flags | ALT_FORM3, dst, dstw, src1, src1w, TMP_REG2, 0);
}
}
/* We know ALT_SIGN_EXT is set if it is an SLJIT_I32_OP on 64 bit systems. */
return emit_op(compiler, SLJIT_SUB, flags | (!(op & SLJIT_SET_U) ? 0 : ALT_FORM6), dst, dstw, src1, src1w, src2, src2w);
case SLJIT_SUBC:
return emit_op(compiler, SLJIT_SUBC, flags | (!(op & SLJIT_KEEP_FLAGS) ? 0 : ALT_FORM1), dst, dstw, src1, src1w, src2, src2w);
case SLJIT_MUL:
#if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
if (op & SLJIT_I32_OP)
flags |= ALT_FORM2;
#endif
if (!GET_FLAGS(op)) {
if (TEST_SL_IMM(src2, src2w)) {
compiler->imm = src2w & 0xffff;
return emit_op(compiler, SLJIT_MUL, flags | ALT_FORM1, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_SL_IMM(src1, src1w)) {
compiler->imm = src1w & 0xffff;
return emit_op(compiler, SLJIT_MUL, flags | ALT_FORM1, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
return emit_op(compiler, SLJIT_MUL, flags, dst, dstw, src1, src1w, src2, src2w);
case SLJIT_AND:
case SLJIT_OR:
case SLJIT_XOR:
/* Commutative unsigned operations. */
if (!GET_FLAGS(op) || GET_OPCODE(op) == SLJIT_AND) {
if (TEST_UL_IMM(src2, src2w)) {
compiler->imm = src2w;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM1, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_UL_IMM(src1, src1w)) {
compiler->imm = src1w;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM1, dst, dstw, src2, src2w, TMP_REG2, 0);
}
if (TEST_UH_IMM(src2, src2w)) {
compiler->imm = (src2w >> 16) & 0xffff;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM2, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_UH_IMM(src1, src1w)) {
compiler->imm = (src1w >> 16) & 0xffff;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM2, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
if (!GET_FLAGS(op) && GET_OPCODE(op) != SLJIT_AND) {
if (TEST_UI_IMM(src2, src2w)) {
compiler->imm = src2w;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM3, dst, dstw, src1, src1w, TMP_REG2, 0);
}
if (TEST_UI_IMM(src1, src1w)) {
compiler->imm = src1w;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM3, dst, dstw, src2, src2w, TMP_REG2, 0);
}
}
return emit_op(compiler, GET_OPCODE(op), flags, dst, dstw, src1, src1w, src2, src2w);
case SLJIT_ASHR:
if (op & SLJIT_KEEP_FLAGS)
flags |= ALT_FORM3;
/* Fall through. */
case SLJIT_SHL:
case SLJIT_LSHR:
#if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
if (op & SLJIT_I32_OP)
flags |= ALT_FORM2;
#endif
if (src2 & SLJIT_IMM) {
compiler->imm = src2w;
return emit_op(compiler, GET_OPCODE(op), flags | ALT_FORM1, dst, dstw, src1, src1w, TMP_REG2, 0);
}
return emit_op(compiler, GET_OPCODE(op), flags, dst, dstw, src1, src1w, src2, src2w);
}
return SLJIT_SUCCESS;
}