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emit_arm64_data_processing: Add carry output to MostSignificantWord

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Merry 2022-07-26 21:45:53 +01:00 committed by merry
parent 5c54c7d968
commit aaa0773695
1 changed files with 10 additions and 0 deletions
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10
src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
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@ -131,6 +131,8 @@ void EmitIR<IR::Opcode::LeastSignificantByte>(oaknut::CodeGenerator& code, EmitC
template<>
void EmitIR<IR::Opcode::MostSignificantWord>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
const auto carry_inst = inst->GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp);
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
auto Wresult = ctx.reg_alloc.WriteW(inst);
@ -138,6 +140,14 @@ void EmitIR<IR::Opcode::MostSignificantWord>(oaknut::CodeGenerator& code, EmitCo
RegAlloc::Realize(Wresult, Xoperand);
code.LSR(Wresult->toX(), Xoperand, 32);
if (carry_inst) {
auto Wcarry = ctx.reg_alloc.WriteW(carry_inst);
RegAlloc::Realize(Wcarry);
code.LSR(Wcarry, Xoperand->toW(), 31 - 29);
code.AND(Wcarry, Wcarry, 1 << 29);
}
}
template<>