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thumb32: Implement SSUB8/USUB8

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This commit is contained in:
Lioncash 2021-02-01 16:47:12 -05:00
parent 271354ee95
commit 6f593da41b
4 changed files with 36 additions and 2 deletions
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28
src/frontend/A32/translate/impl/thumb32_parallel.cpp
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@ -63,6 +63,20 @@ bool ThumbTranslatorVisitor::thumb32_SSAX(Reg n, Reg d, Reg m) {
return true;
}
bool ThumbTranslatorVisitor::thumb32_SSUB8(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.PackedSubS8(reg_n, reg_m);
ir.SetRegister(d, result.result);
ir.SetGEFlags(result.ge);
return true;
}
bool ThumbTranslatorVisitor::thumb32_SSUB16(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
@ -133,6 +147,20 @@ bool ThumbTranslatorVisitor::thumb32_USAX(Reg n, Reg d, Reg m) {
return true;
}
bool ThumbTranslatorVisitor::thumb32_USUB8(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.PackedSubU8(reg_n, reg_m);
ir.SetRegister(d, result.result);
ir.SetGEFlags(result.ge);
return true;
}
bool ThumbTranslatorVisitor::thumb32_USUB16(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();