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Merge pull request #1814 from JayFoxRox/fix-read-after-write

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Fix read-after-write in SMUAD, SMLAD, SMUSD, SMLSD
This commit is contained in:
Mat M 2016-05-18 08:32:36 -04:00
commit 7a7488a0bb
1 changed files with 8 additions and 4 deletions
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12
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -5527,28 +5527,32 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
// SMUAD and SMLAD // SMUAD and SMLAD
if (BIT(op2, 1) == 0) { if (BIT(op2, 1) == 0) {
RD = (product1 + product2); u32 rd_val = (product1 + product2);
if (inst_cream->Ra != 15) { if (inst_cream->Ra != 15) {
RD += cpu->Reg[inst_cream->Ra]; rd_val += cpu->Reg[inst_cream->Ra];
if (ARMul_AddOverflowQ(product1 + product2, cpu->Reg[inst_cream->Ra])) if (ARMul_AddOverflowQ(product1 + product2, cpu->Reg[inst_cream->Ra]))
cpu->Cpsr |= (1 << 27); cpu->Cpsr |= (1 << 27);
} }
RD = rd_val;
if (ARMul_AddOverflowQ(product1, product2)) if (ARMul_AddOverflowQ(product1, product2))
cpu->Cpsr |= (1 << 27); cpu->Cpsr |= (1 << 27);
} }
// SMUSD and SMLSD // SMUSD and SMLSD
else { else {
RD = (product1 - product2); u32 rd_val = (product1 - product2);
if (inst_cream->Ra != 15) { if (inst_cream->Ra != 15) {
RD += cpu->Reg[inst_cream->Ra]; rd_val += cpu->Reg[inst_cream->Ra];
if (ARMul_AddOverflowQ(product1 - product2, cpu->Reg[inst_cream->Ra])) if (ARMul_AddOverflowQ(product1 - product2, cpu->Reg[inst_cream->Ra]))
cpu->Cpsr |= (1 << 27); cpu->Cpsr |= (1 << 27);
} }
RD = rd_val;
} }
} }