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A64: Implement SHA1P

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Lioncash 2018-04-15 21:21:18 -04:00 committed by MerryMage
parent 718f3e9bb4
commit 47bc97a71b
2 changed files with 20 additions and 4 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -323,7 +323,7 @@ INST(AESIMC, "AESIMC", "01001
// Data Processing - FP and SIMD - SHA
INST(SHA1C, "SHA1C", "01011110000mmmmm000000nnnnnddddd")
//INST(SHA1P, "SHA1P", "01011110000mmmmm000100nnnnnddddd")
INST(SHA1P, "SHA1P", "01011110000mmmmm000100nnnnnddddd")
//INST(SHA1M, "SHA1M", "01011110000mmmmm001000nnnnnddddd")
INST(SHA1SU0, "SHA1SU0", "01011110000mmmmm001100nnnnnddddd")
//INST(SHA256H, "SHA256H", "01011110000mmmmm010000nnnnnddddd")

22
src/frontend/A64/translate/impl/simd_sha.cpp
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@ -11,9 +11,13 @@ namespace {
IR::U32 SHAchoose(IREmitter& ir, IR::U32 x, IR::U32 y, IR::U32 z) {
return ir.Eor(ir.And(ir.Eor(y, z), x), z);
}
IR::U32 SHAparity(IREmitter& ir, IR::U32 x, IR::U32 y, IR::U32 z) {
return ir.Eor(ir.Eor(y, z), x);
}
bool TranslatorVisitor::SHA1C(Vec Vm, Vec Vn, Vec Vd) {
using SHA1HashUpdateFunction = IR::U32(IREmitter&, IR::U32, IR::U32, IR::U32);
IR::U128 SHA1HashUpdate(IREmitter& ir, Vec Vm, Vec Vn, Vec Vd, SHA1HashUpdateFunction fn) {
IR::U128 x = ir.GetQ(Vd);
IR::U32 y = ir.VectorGetElement(32, ir.GetQ(Vn), 0);
const IR::U128 w = ir.GetQ(Vm);
@ -23,7 +27,7 @@ bool TranslatorVisitor::SHA1C(Vec Vm, Vec Vn, Vec Vd) {
const IR::U32 after_low_x = ir.VectorGetElement(32, x, 1);
const IR::U32 before_high_x = ir.VectorGetElement(32, x, 2);
const IR::U32 high_x = ir.VectorGetElement(32, x, 3);
const IR::U32 t = SHAchoose(ir, after_low_x, before_high_x, high_x);
const IR::U32 t = fn(ir, after_low_x, before_high_x, high_x);
const IR::U32 w_segment = ir.VectorGetElement(32, w, i);
y = ir.Add(ir.Add(ir.Add(y, ir.RotateRight(low_x, ir.Imm8(27))), t), w_segment);
@ -36,7 +40,19 @@ bool TranslatorVisitor::SHA1C(Vec Vm, Vec Vn, Vec Vd) {
y = high_x;
}
ir.SetQ(Vd, x);
return x;
}
} // Anonymous namespace
bool TranslatorVisitor::SHA1C(Vec Vm, Vec Vn, Vec Vd) {
const IR::U128 result = SHA1HashUpdate(ir, Vm, Vn, Vd, SHAchoose);
ir.SetQ(Vd, result);
return true;
}
bool TranslatorVisitor::SHA1P(Vec Vm, Vec Vn, Vec Vd) {
const IR::U128 result = SHA1HashUpdate(ir, Vm, Vn, Vd, SHAparity);
ir.SetQ(Vd, result);
return true;
}