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Code Issues Releases Activity

Fix REV64 (vector) instruction

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This commit is contained in:
gdkchan 2018-03-02 20:24:16 -03:00
parent 829b1b1cc0
commit efef605b26
3 changed files with 22 additions and 8 deletions
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2
ChocolArm64/AOpCodeTable.cs
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@ -230,7 +230,7 @@ namespace ChocolArm64
Set("0x10111000100000010110xxxxxxxxxx", AInstEmit.Not_V, typeof(AOpCodeSimd));
Set("0x001110101xxxxx000111xxxxxxxxxx", AInstEmit.Orr_V, typeof(AOpCodeSimdReg));
Set("0x00111100000xxx<<x101xxxxxxxxxx", AInstEmit.Orr_Vi, typeof(AOpCodeSimdImm));
Set("0x001110xx100000000010xxxxxxxxxx", AInstEmit.Rev64_V, typeof(AOpCodeSimd));
Set("0x001110<<100000000010xxxxxxxxxx", AInstEmit.Rev64_V, typeof(AOpCodeSimd));
Set("0x001110<<1xxxxx000100xxxxxxxxxx", AInstEmit.Saddw_V, typeof(AOpCodeSimdReg));
Set("x0011110xx100010000000xxxxxxxxxx", AInstEmit.Scvtf_Gp, typeof(AOpCodeSimdCvt));
Set("010111100x100001110110xxxxxxxxxx", AInstEmit.Scvtf_S, typeof(AOpCodeSimd));

26
ChocolArm64/Instruction/AInstEmitSimdLogical.cs
View file

@ -1,5 +1,6 @@
using ChocolArm64.Decoder;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
using static ChocolArm64.Instruction.AInstEmitSimdHelper;
@ -69,12 +70,25 @@ namespace ChocolArm64.Instruction
public static void Rev64_V(AILEmitterCtx Context)
{
Action Emit = () =>
{
ASoftFallback.EmitCall(Context, nameof(ASoftFallback.ReverseBits64));
};
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
EmitVectorUnaryOpZx(Context, Emit);
int Bytes = Context.CurrOp.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
int RevIndex = Elems - 1;
for (int Index = 0; Index < (Bytes >> Op.Size); Index++)
{
EmitVectorExtractZx(Context, Op.Rn, RevIndex--, Op.Size);
EmitVectorInsert(Context, Op.Rd, Index, Op.Size);
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
}
}

2
ChocolArm64/Instruction/ASoftFallback.cs
View file

@ -75,7 +75,7 @@ namespace ChocolArm64.Instruction
private static ulong ReverseBytes(ulong Value, RevSize Size)
{
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
if (Size == RevSize.Rev16)
{