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A64: Implement SM3TT2B

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Lioncash 2018-04-10 13:48:24 -04:00 committed by MerryMage
parent b3d4c02098
commit 8a60a63a8b
2 changed files with 15 additions and 3 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -855,7 +855,7 @@ INST(USHLL, "USHLL, USHLL2", "0Q101
INST(SM3TT1A, "SM3TT1A", "11001110010mmmmm10ii00nnnnnddddd")
INST(SM3TT1B, "SM3TT1B", "11001110010mmmmm10ii01nnnnnddddd")
INST(SM3TT2A, "SM3TT2A", "11001110010mmmmm10ii10nnnnnddddd")
//INST(SM3TT2B, "SM3TT2B", "11001110010mmmmm10ii11nnnnnddddd")
INST(SM3TT2B, "SM3TT2B", "11001110010mmmmm10ii11nnnnnddddd")
// Data Processing - FP and SIMD - SHA512 three register
//INST(SHA512H, "SHA512H", "11001110011mmmmm100000nnnnnddddd")

16
src/frontend/A64/translate/impl/simd_crypto_three_register.cpp
View file

@ -47,7 +47,7 @@ static void SM3TT1(TranslatorVisitor& v, Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd, SM
v.ir.SetQ(Vd, result);
}
static void SM3TT2(TranslatorVisitor& v, Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd, [[maybe_unused]] SM3TTVariant behavior) {
static void SM3TT2(TranslatorVisitor& v, Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd, SM3TTVariant behavior) {
const IR::U128 d = v.ir.GetQ(Vd);
const IR::U128 m = v.ir.GetQ(Vm);
const IR::U128 n = v.ir.GetQ(Vn);
@ -60,7 +60,14 @@ static void SM3TT2(TranslatorVisitor& v, Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd, [[
const IR::U32 top_n = v.ir.VectorGetElement(32, n, 3);
const IR::U32 wj = v.ir.VectorGetElement(32, m, index);
const IR::U32 tt2 = v.ir.Eor(after_low_d, v.ir.Eor(top_d, before_top_d));
const IR::U32 tt2 = [&] {
if (behavior == SM3TTVariant::A) {
return v.ir.Eor(after_low_d, v.ir.Eor(top_d, before_top_d));
}
const IR::U32 tmp1 = v.ir.And(top_d, before_top_d);
const IR::U32 tmp2 = v.ir.And(v.ir.Not(top_d), after_low_d);
return v.ir.Or(tmp1, tmp2);
}();
const IR::U32 final_tt2 = v.ir.Add(tt2, v.ir.Add(low_d, v.ir.Add(top_n, wj)));
const IR::U32 top_result = v.ir.Eor(final_tt2, v.ir.Eor(v.ir.RotateRight(final_tt2, v.ir.Imm8(23)),
v.ir.RotateRight(final_tt2, v.ir.Imm8(15))));
@ -89,4 +96,9 @@ bool TranslatorVisitor::SM3TT2A(Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SM3TT2B(Vec Vm, Imm<2> imm2, Vec Vn, Vec Vd) {
SM3TT2(*this, Vm, imm2, Vn, Vd, SM3TTVariant::B);
return true;
}
} // namespace Dynarmic::A64