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A64: Implement SHA512H

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Lioncash 2018-04-19 16:00:34 -04:00 committed by MerryMage
parent d1f5b084b4
commit 033b890e25
2 changed files with 53 additions and 1 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -858,7 +858,7 @@ INST(SM3TT2A, "SM3TT2A", "11001
INST(SM3TT2B, "SM3TT2B", "11001110010mmmmm10ii11nnnnnddddd")
// Data Processing - FP and SIMD - SHA512 three register
//INST(SHA512H, "SHA512H", "11001110011mmmmm100000nnnnnddddd")
INST(SHA512H, "SHA512H", "11001110011mmmmm100000nnnnnddddd")
//INST(SHA512H2, "SHA512H2", "11001110011mmmmm100001nnnnnddddd")
INST(SHA512SU1, "SHA512SU1", "11001110011mmmmm100010nnnnnddddd")
INST(RAX1, "RAX1", "11001110011mmmmm100011nnnnnddddd")

52
src/frontend/A64/translate/impl/simd_sha512.cpp
View file

@ -15,6 +15,14 @@ IR::U64 MakeSig(IREmitter& ir, IR::U64 data, u8 first_rot_amount, u8 second_rot_
return ir.Eor(tmp1, ir.Eor(tmp2, tmp3));
}
IR::U64 MakeMNSig(IREmitter& ir, IR::U64 data, u8 first_rot_amount, u8 second_rot_amount, u8 third_rot_amount) {
const IR::U64 tmp1 = ir.RotateRight(data, ir.Imm8(first_rot_amount));
const IR::U64 tmp2 = ir.RotateRight(data, ir.Imm8(second_rot_amount));
const IR::U64 tmp3 = ir.RotateRight(data, ir.Imm8(third_rot_amount));
return ir.Eor(tmp1, ir.Eor(tmp2, tmp3));
}
} // Anonymous namespace
bool TranslatorVisitor::SHA512SU0(Vec Vn, Vec Vd) {
@ -60,6 +68,50 @@ bool TranslatorVisitor::SHA512SU1(Vec Vm, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::SHA512H(Vec Vm, Vec Vn, Vec Vd) {
const IR::U128 x = ir.GetQ(Vn);
const IR::U128 y = ir.GetQ(Vm);
const IR::U128 w = ir.GetQ(Vd);
const IR::U64 lower_x = ir.VectorGetElement(64, x, 0);
const IR::U64 upper_x = ir.VectorGetElement(64, x, 1);
const IR::U64 lower_y = ir.VectorGetElement(64, y, 0);
const IR::U64 upper_y = ir.VectorGetElement(64, y, 1);
const auto make_msigma = [&](IR::U64 data) {
return MakeMNSig(ir, data, 14, 18, 41);
};
const auto make_partial_half = [](IREmitter& ir, IR::U64 a, IR::U64 b, IR::U64 c) {
const IR::U64 tmp1 = ir.And(a, b);
const IR::U64 tmp2 = ir.And(ir.Not(a), c);
return ir.Eor(tmp1, tmp2);
};
const IR::U64 Vtmp = [&] {
const IR::U64 upper_w = ir.VectorGetElement(64, w, 1);
const IR::U64 partial = make_partial_half(ir, upper_y, lower_x, upper_x);
const IR::U64 sig = make_msigma(upper_y);
return ir.Add(partial, ir.Add(sig, upper_w));
}();
const IR::U64 tmp = ir.Add(Vtmp, lower_y);
const IR::U128 low_result = [&] {
const IR::U64 lower_w = ir.VectorGetElement(64, w, 0);
const IR::U64 partial = make_partial_half(ir, tmp, upper_y, lower_x);
const IR::U64 sig = make_msigma(tmp);
return ir.ZeroExtendToQuad(ir.Add(partial, ir.Add(sig, lower_w)));
}();
const IR::U128 result = ir.VectorSetElement(64, low_result, 1, Vtmp);
ir.SetQ(Vd, result);
return true;
}
bool TranslatorVisitor::RAX1(Vec Vm, Vec Vn, Vec Vd) {
const IR::U128 m = ir.GetQ(Vm);
const IR::U128 n = ir.GetQ(Vn);