From 3a45eacb16d1d80dd378fc3ae7330fce351a21de Mon Sep 17 00:00:00 2001 From: Jannik Vogel Date: Wed, 18 May 2016 13:59:05 +0200 Subject: Fix read-after-write in SMUAD, SMLAD, SMUSD, SMLSD --- src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'src/core/arm') diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp index 8d4b26815..cfc67287f 100644 --- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp +++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp @@ -5527,28 +5527,32 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) { // SMUAD and SMLAD if (BIT(op2, 1) == 0) { - RD = (product1 + product2); + u32 rd_val = (product1 + product2); 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])) cpu->Cpsr |= (1 << 27); } + RD = rd_val; + if (ARMul_AddOverflowQ(product1, product2)) cpu->Cpsr |= (1 << 27); } // SMUSD and SMLSD else { - RD = (product1 - product2); + u32 rd_val = (product1 - product2); 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])) cpu->Cpsr |= (1 << 27); } + + RD = rd_val; } } -- cgit v1.2.3