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A64: Implement USUBL/USUBL2

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Lioncash 2018-04-05 09:35:57 -04:00 committed by MerryMage
parent 88d70e3b8a
commit 5c9e7f328d
2 changed files with 17 additions and 1 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -689,7 +689,7 @@ INST(SSUBW, "SSUBW, SSUBW2", "0Q001
//INST(PMULL, "PMULL, PMULL2", "0Q001110zz1mmmmm111000nnnnnddddd")
INST(UADDL, "UADDL, UADDL2", "0Q101110zz1mmmmm000000nnnnnddddd")
INST(UADDW, "UADDW, UADDW2", "0Q101110zz1mmmmm000100nnnnnddddd")
//INST(USUBL, "USUBL, USUBL2", "0Q101110zz1mmmmm001000nnnnnddddd")
INST(USUBL, "USUBL, USUBL2", "0Q101110zz1mmmmm001000nnnnnddddd")
INST(USUBW, "USUBW, USUBW2", "0Q101110zz1mmmmm001100nnnnnddddd")
//INST(RADDHN, "RADDHN, RADDHN2", "0Q101110zz1mmmmm010000nnnnnddddd")
//INST(UABAL, "UABAL, UABAL2", "0Q101110zz1mmmmm010100nnnnnddddd")

16
src/frontend/A64/translate/impl/simd_three_different.cpp
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@ -90,4 +90,20 @@ bool TranslatorVisitor::USUBW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::USUBL(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();
}
const size_t esize = 8 << size.ZeroExtend();
const size_t part = Q ? 1 : 0;
const IR::U128 operand1 = ir.VectorZeroExtend(esize, Vpart(64, Vn, part));
const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
const IR::U128 result = ir.VectorSub(esize * 2, operand1, operand2);
V(128, Vd, result);
return true;
}
} // namespace Dynarmic::A64