ChocolArm64/Instruction/AInstEmitSimdLogical.cs
gdkchan e64f484521 Add SMLSL, SQRSHRN and SRSHR (Vector) cpu instructions, nits (#225)
* Add SMLSL, SQRSHRN and SRSHR (Vector) cpu instructions

* Address PR feedback

* Address PR feedback

* Remove another useless temp var

* nit: Alignment

* Replace Context.CurrOp.GetBitsCount() with Op.GetBitsCount()

* Fix encodings and move flag bit test out of the loop
2018-07-14 13:13:02 -03:00

222 lines
5.9 KiB
C#

using ChocolArm64.Decoder;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
using System.Runtime.Intrinsics.X86;
using static ChocolArm64.Instruction.AInstEmitSimdHelper;
namespace ChocolArm64.Instruction
{
static partial class AInstEmit
{
public static void And_V(AILEmitterCtx Context)
{
if (AOptimizations.UseSse2)
{
EmitSse2Call(Context, nameof(Sse2.And));
}
else
{
EmitVectorBinaryOpZx(Context, () => Context.Emit(OpCodes.And));
}
}
public static void Bic_V(AILEmitterCtx Context)
{
EmitVectorBinaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Not);
Context.Emit(OpCodes.And);
});
}
public static void Bic_Vi(AILEmitterCtx Context)
{
EmitVectorImmBinaryOp(Context, () =>
{
Context.Emit(OpCodes.Not);
Context.Emit(OpCodes.And);
});
}
public static void Bif_V(AILEmitterCtx Context)
{
EmitBitBif(Context, true);
}
public static void Bit_V(AILEmitterCtx Context)
{
EmitBitBif(Context, false);
}
private static void EmitBitBif(AILEmitterCtx Context, bool NotRm)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int Bytes = Op.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rd, Index, Op.Size);
EmitVectorExtractZx(Context, Op.Rn, Index, Op.Size);
Context.Emit(OpCodes.Xor);
EmitVectorExtractZx(Context, Op.Rm, Index, Op.Size);
if (NotRm)
{
Context.Emit(OpCodes.Not);
}
Context.Emit(OpCodes.And);
EmitVectorExtractZx(Context, Op.Rd, Index, Op.Size);
Context.Emit(OpCodes.Xor);
EmitVectorInsert(Context, Op.Rd, Index, Op.Size);
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
public static void Bsl_V(AILEmitterCtx Context)
{
EmitVectorTernaryOpZx(Context, () =>
{
Context.EmitSttmp();
Context.EmitLdtmp();
Context.Emit(OpCodes.Xor);
Context.Emit(OpCodes.And);
Context.EmitLdtmp();
Context.Emit(OpCodes.Xor);
});
}
public static void Eor_V(AILEmitterCtx Context)
{
if (AOptimizations.UseSse2)
{
EmitSse2Call(Context, nameof(Sse2.Xor));
}
else
{
EmitVectorBinaryOpZx(Context, () => Context.Emit(OpCodes.Xor));
}
}
public static void Not_V(AILEmitterCtx Context)
{
EmitVectorUnaryOpZx(Context, () => Context.Emit(OpCodes.Not));
}
public static void Orn_V(AILEmitterCtx Context)
{
EmitVectorBinaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Not);
Context.Emit(OpCodes.Or);
});
}
public static void Orr_V(AILEmitterCtx Context)
{
if (AOptimizations.UseSse2)
{
EmitSse2Call(Context, nameof(Sse2.Or));
}
else
{
EmitVectorBinaryOpZx(Context, () => Context.Emit(OpCodes.Or));
}
}
public static void Orr_Vi(AILEmitterCtx Context)
{
EmitVectorImmBinaryOp(Context, () => Context.Emit(OpCodes.Or));
}
public static void Rbit_V(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int Elems = Op.RegisterSize == ARegisterSize.SIMD128 ? 16 : 8;
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rn, Index, 0);
Context.Emit(OpCodes.Conv_U4);
ASoftFallback.EmitCall(Context, nameof(ASoftFallback.ReverseBits8));
Context.Emit(OpCodes.Conv_U8);
EmitVectorInsert(Context, Op.Rd, Index, 0);
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
public static void Rev16_V(AILEmitterCtx Context)
{
EmitRev_V(Context, ContainerSize: 1);
}
public static void Rev32_V(AILEmitterCtx Context)
{
EmitRev_V(Context, ContainerSize: 2);
}
public static void Rev64_V(AILEmitterCtx Context)
{
EmitRev_V(Context, ContainerSize: 3);
}
private static void EmitRev_V(AILEmitterCtx Context, int ContainerSize)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
if (Op.Size >= ContainerSize)
{
throw new InvalidOperationException();
}
int Bytes = Op.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
int ContainerMask = (1 << (ContainerSize - Op.Size)) - 1;
for (int Index = 0; Index < Elems; Index++)
{
int RevIndex = Index ^ ContainerMask;
EmitVectorExtractZx(Context, Op.Rn, RevIndex, Op.Size);
EmitVectorInsertTmp(Context, Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
}
}