From 5c9e7f328d771496b067d46305384cbc534bb8fd Mon Sep 17 00:00:00 2001 From: Lioncash Date: Thu, 5 Apr 2018 09:35:57 -0400 Subject: [PATCH] A64: Implement USUBL/USUBL2 --- src/frontend/A64/decoder/a64.inc | 2 +- .../A64/translate/impl/simd_three_different.cpp | 16 ++++++++++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc index 2764d7a1..d53faec0 100644 --- a/src/frontend/A64/decoder/a64.inc +++ b/src/frontend/A64/decoder/a64.inc @@ -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") diff --git a/src/frontend/A64/translate/impl/simd_three_different.cpp b/src/frontend/A64/translate/impl/simd_three_different.cpp index b43d3ee8..9a6f013b 100644 --- a/src/frontend/A64/translate/impl/simd_three_different.cpp +++ b/src/frontend/A64/translate/impl/simd_three_different.cpp @@ -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