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emit_arm64_data_processing: Correct ArithmeticShiftRight32

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Merry 2022-07-24 20:11:15 +01:00 committed by merry
parent 70d9137859
commit ef137dd8b9
1 changed files with 11 additions and 5 deletions
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16
src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
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@ -499,13 +499,19 @@ void EmitIR<IR::Opcode::ArithmeticShiftRight32>(oaknut::CodeGenerator& code, Emi
code.ANDS(Wscratch0, Wshift, 0xff); code.ANDS(Wscratch0, Wshift, 0xff);
code.B(EQ, zero); code.B(EQ, zero);
code.MOV(Wscratch1, 31); code.MOV(Wscratch1, 63);
code.CMP(Wscratch0, 31); code.CMP(Wscratch0, 63);
code.CSEL(Wscratch0, Wscratch0, Wscratch1, LO); code.CSEL(Wscratch0, Wscratch0, Wscratch1, LS);
code.SXTW(Wresult->toX(), Woperand);
code.SUB(Wscratch1, Wscratch0, 1); code.SUB(Wscratch1, Wscratch0, 1);
code.ASR(Wresult, Woperand, Wscratch0);
code.LSR(Wcarry_out, Woperand, Wscratch1); code.ASR(Wcarry_out->toX(), Wresult->toX(), Xscratch1);
code.ASR(Wresult->toX(), Wresult->toX(), Xscratch0);
code.UBFIZ(Wcarry_out, Wcarry_out, 29, 1); code.UBFIZ(Wcarry_out, Wcarry_out, 29, 1);
code.MOV(*Wresult, Wresult);
code.B(end); code.B(end);
code.l(zero); code.l(zero);