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thumb32: Implement SXTAB

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Lioncash 2021-02-10 16:20:43 -05:00
parent 75a28b00a7
commit ad5d0d7b77
3 changed files with 15 additions and 1 deletions
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13
src/frontend/A32/translate/impl/thumb32_data_processing_register.cpp
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@ -37,6 +37,19 @@ bool ThumbTranslatorVisitor::thumb32_SXTB16(Reg d, SignExtendRotation rotate, Re
return true;
}
bool ThumbTranslatorVisitor::thumb32_SXTAB(Reg n, Reg d, SignExtendRotation rotate, Reg m) {
if (d == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto rotated = Rotate(ir, m, rotate);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.Add(reg_n, ir.SignExtendByteToWord(ir.LeastSignificantByte(rotated)));
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_SXTAB16(Reg n, Reg d, SignExtendRotation rotate, Reg m) {
if (d == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();