Ryujinx/ChocolArm64/Instruction/AInstEmitSimdCvt.cs

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using ChocolArm64.Decoder;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
using static ChocolArm64.Instruction.AInstEmitSimdHelper;
namespace ChocolArm64.Instruction
{
static partial class AInstEmit
{
public static void Fcvt_S(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
EmitVectorExtractF(Context, Op.Rn, 0, Op.Size);
EmitFloatCast(Context, Op.Opc);
EmitScalarSetF(Context, Op.Rd, Op.Opc);
}
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public static void Fcvtas_Gp(AILEmitterCtx Context)
{
EmitFcvt_s_Gp(Context, () => EmitRoundMathCall(Context, MidpointRounding.AwayFromZero));
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}
public static void Fcvtau_Gp(AILEmitterCtx Context)
{
EmitFcvt_u_Gp(Context, () => EmitRoundMathCall(Context, MidpointRounding.AwayFromZero));
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}
public static void Fcvtl_V(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int SizeF = Op.Size & 1;
int Elems = 4 >> SizeF;
int Part = Context.CurrOp.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
for (int Index = 0; Index < Elems; Index++)
{
if (SizeF == 0)
{
EmitVectorExtractZx(Context, Op.Rn, Part + Index, 1);
Context.Emit(OpCodes.Conv_U2);
Context.EmitCall(typeof(ASoftFloat), nameof(ASoftFloat.ConvertHalfToSingle));
}
else /* if (SizeF == 1) */
{
EmitVectorExtractF(Context, Op.Rn, Part + Index, 0);
Context.Emit(OpCodes.Conv_R8);
}
EmitVectorInsertF(Context, Op.Rd, Index, SizeF);
}
}
public static void Fcvtms_Gp(AILEmitterCtx Context)
{
EmitFcvt_s_Gp(Context, () => EmitUnaryMathCall(Context, nameof(Math.Floor)));
}
public static void Fcvtmu_Gp(AILEmitterCtx Context)
{
EmitFcvt_u_Gp(Context, () => EmitUnaryMathCall(Context, nameof(Math.Floor)));
}
public static void Fcvtn_V(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int SizeF = Op.Size & 1;
int Elems = 4 >> SizeF;
int Part = Context.CurrOp.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractF(Context, Op.Rd, Index, SizeF);
if (SizeF == 0)
{
//TODO: This need the half precision floating point type,
//that is not yet supported on .NET. We should probably
//do our own implementation on the meantime.
throw new NotImplementedException();
}
else /* if (SizeF == 1) */
{
Context.Emit(OpCodes.Conv_R4);
EmitVectorInsertF(Context, Op.Rd, Part + Index, 0);
}
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
public static void Fcvtps_Gp(AILEmitterCtx Context)
{
EmitFcvt_s_Gp(Context, () => EmitUnaryMathCall(Context, nameof(Math.Ceiling)));
}
public static void Fcvtpu_Gp(AILEmitterCtx Context)
{
EmitFcvt_u_Gp(Context, () => EmitUnaryMathCall(Context, nameof(Math.Ceiling)));
}
public static void Fcvtzs_Gp(AILEmitterCtx Context)
{
EmitFcvt_s_Gp(Context, () => { });
}
public static void Fcvtzs_Gp_Fix(AILEmitterCtx Context)
{
EmitFcvtzs_Gp_Fix(Context);
}
public static void Fcvtzs_S(AILEmitterCtx Context)
{
EmitScalarFcvtzs(Context);
}
public static void Fcvtzs_V(AILEmitterCtx Context)
{
EmitVectorFcvtzs(Context);
}
public static void Fcvtzu_Gp(AILEmitterCtx Context)
{
EmitFcvt_u_Gp(Context, () => { });
}
public static void Fcvtzu_Gp_Fix(AILEmitterCtx Context)
{
EmitFcvtzu_Gp_Fix(Context);
}
public static void Fcvtzu_S(AILEmitterCtx Context)
{
EmitScalarFcvtzu(Context);
}
public static void Fcvtzu_V(AILEmitterCtx Context)
{
EmitVectorFcvtzu(Context);
}
public static void Scvtf_Gp(AILEmitterCtx Context)
{
AOpCodeSimdCvt Op = (AOpCodeSimdCvt)Context.CurrOp;
Context.EmitLdintzr(Op.Rn);
if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
Context.Emit(OpCodes.Conv_U4);
}
EmitFloatCast(Context, Op.Size);
EmitScalarSetF(Context, Op.Rd, Op.Size);
}
public static void Scvtf_S(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
EmitVectorExtractSx(Context, Op.Rn, 0, Op.Size + 2);
EmitFloatCast(Context, Op.Size);
EmitScalarSetF(Context, Op.Rd, Op.Size);
}
public static void Scvtf_V(AILEmitterCtx Context)
{
EmitVectorCvtf(Context, Signed: true);
}
public static void Ucvtf_Gp(AILEmitterCtx Context)
{
AOpCodeSimdCvt Op = (AOpCodeSimdCvt)Context.CurrOp;
Context.EmitLdintzr(Op.Rn);
if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
Context.Emit(OpCodes.Conv_U4);
}
Context.Emit(OpCodes.Conv_R_Un);
EmitFloatCast(Context, Op.Size);
EmitScalarSetF(Context, Op.Rd, Op.Size);
}
public static void Ucvtf_S(AILEmitterCtx Context)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
EmitVectorExtractZx(Context, Op.Rn, 0, Op.Size + 2);
Context.Emit(OpCodes.Conv_R_Un);
EmitFloatCast(Context, Op.Size);
EmitScalarSetF(Context, Op.Rd, Op.Size);
}
public static void Ucvtf_V(AILEmitterCtx Context)
{
EmitVectorCvtf(Context, Signed: false);
}
private static int GetFBits(AILEmitterCtx Context)
{
if (Context.CurrOp is AOpCodeSimdShImm Op)
{
return GetImmShr(Op);
}
return 0;
}
private static void EmitFloatCast(AILEmitterCtx Context, int Size)
{
if (Size == 0)
{
Context.Emit(OpCodes.Conv_R4);
}
else if (Size == 1)
{
Context.Emit(OpCodes.Conv_R8);
}
else
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
}
private static void EmitFcvt_s_Gp(AILEmitterCtx Context, Action Emit)
{
EmitFcvt___Gp(Context, Emit, true);
}
private static void EmitFcvt_u_Gp(AILEmitterCtx Context, Action Emit)
{
EmitFcvt___Gp(Context, Emit, false);
}
private static void EmitFcvt___Gp(AILEmitterCtx Context, Action Emit, bool Signed)
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{
AOpCodeSimdCvt Op = (AOpCodeSimdCvt)Context.CurrOp;
EmitVectorExtractF(Context, Op.Rn, 0, Op.Size);
Emit();
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if (Signed)
{
EmitScalarFcvts(Context, Op.Size, 0);
}
else
{
EmitScalarFcvtu(Context, Op.Size, 0);
}
if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
Context.Emit(OpCodes.Conv_U8);
}
Context.EmitStintzr(Op.Rd);
}
private static void EmitFcvtzs_Gp_Fix(AILEmitterCtx Context)
{
EmitFcvtz__Gp_Fix(Context, true);
}
private static void EmitFcvtzu_Gp_Fix(AILEmitterCtx Context)
{
EmitFcvtz__Gp_Fix(Context, false);
}
private static void EmitFcvtz__Gp_Fix(AILEmitterCtx Context, bool Signed)
{
AOpCodeSimdCvt Op = (AOpCodeSimdCvt)Context.CurrOp;
EmitVectorExtractF(Context, Op.Rn, 0, Op.Size);
if (Signed)
{
EmitScalarFcvts(Context, Op.Size, Op.FBits);
}
else
{
EmitScalarFcvtu(Context, Op.Size, Op.FBits);
}
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if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
Context.Emit(OpCodes.Conv_U8);
}
Context.EmitStintzr(Op.Rd);
}
private static void EmitVectorScvtf(AILEmitterCtx Context)
{
EmitVectorCvtf(Context, true);
}
private static void EmitVectorUcvtf(AILEmitterCtx Context)
{
EmitVectorCvtf(Context, false);
}
private static void EmitVectorCvtf(AILEmitterCtx Context, bool Signed)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int SizeF = Op.Size & 1;
int SizeI = SizeF + 2;
int FBits = GetFBits(Context);
int Bytes = Op.GetBitsCount() >> 3;
for (int Index = 0; Index < (Bytes >> SizeI); Index++)
{
EmitVectorExtract(Context, Op.Rn, Index, SizeI, Signed);
if (!Signed)
{
Context.Emit(OpCodes.Conv_R_Un);
}
Context.Emit(SizeF == 0
? OpCodes.Conv_R4
: OpCodes.Conv_R8);
EmitI2fFBitsMul(Context, SizeF, FBits);
EmitVectorInsertF(Context, Op.Rd, Index, SizeF);
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
private static void EmitScalarFcvtzs(AILEmitterCtx Context)
{
EmitScalarFcvtz(Context, true);
}
private static void EmitScalarFcvtzu(AILEmitterCtx Context)
{
EmitScalarFcvtz(Context, false);
}
private static void EmitScalarFcvtz(AILEmitterCtx Context, bool Signed)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int SizeF = Op.Size & 1;
int SizeI = SizeF + 2;
int FBits = GetFBits(Context);
EmitVectorExtractF(Context, Op.Rn, 0, SizeF);
EmitF2iFBitsMul(Context, SizeF, FBits);
if (SizeF == 0)
{
AVectorHelper.EmitCall(Context, Signed
? nameof(AVectorHelper.SatF32ToS32)
: nameof(AVectorHelper.SatF32ToU32));
}
else /* if (SizeF == 1) */
{
AVectorHelper.EmitCall(Context, Signed
? nameof(AVectorHelper.SatF64ToS64)
: nameof(AVectorHelper.SatF64ToU64));
}
if (SizeF == 0)
{
Context.Emit(OpCodes.Conv_U8);
}
EmitScalarSet(Context, Op.Rd, SizeI);
}
private static void EmitVectorFcvtzs(AILEmitterCtx Context)
{
EmitVectorFcvtz(Context, true);
}
private static void EmitVectorFcvtzu(AILEmitterCtx Context)
{
EmitVectorFcvtz(Context, false);
}
private static void EmitVectorFcvtz(AILEmitterCtx Context, bool Signed)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int SizeF = Op.Size & 1;
int SizeI = SizeF + 2;
int FBits = GetFBits(Context);
int Bytes = Op.GetBitsCount() >> 3;
for (int Index = 0; Index < (Bytes >> SizeI); Index++)
{
EmitVectorExtractF(Context, Op.Rn, Index, SizeF);
EmitF2iFBitsMul(Context, SizeF, FBits);
if (SizeF == 0)
{
AVectorHelper.EmitCall(Context, Signed
? nameof(AVectorHelper.SatF32ToS32)
: nameof(AVectorHelper.SatF32ToU32));
}
else /* if (SizeF == 1) */
{
AVectorHelper.EmitCall(Context, Signed
? nameof(AVectorHelper.SatF64ToS64)
: nameof(AVectorHelper.SatF64ToU64));
}
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if (SizeF == 0)
{
Context.Emit(OpCodes.Conv_U8);
}
EmitVectorInsert(Context, Op.Rd, Index, SizeI);
}
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
private static void EmitScalarFcvts(AILEmitterCtx Context, int Size, int FBits)
{
if (Size < 0 || Size > 1)
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
EmitF2iFBitsMul(Context, Size, FBits);
if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
if (Size == 0)
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF32ToS32));
}
else /* if (Size == 1) */
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF64ToS32));
}
}
else
{
if (Size == 0)
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF32ToS64));
}
else /* if (Size == 1) */
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF64ToS64));
}
}
}
private static void EmitScalarFcvtu(AILEmitterCtx Context, int Size, int FBits)
{
if (Size < 0 || Size > 1)
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
EmitF2iFBitsMul(Context, Size, FBits);
if (Context.CurrOp.RegisterSize == ARegisterSize.Int32)
{
if (Size == 0)
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF32ToU32));
}
else /* if (Size == 1) */
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF64ToU32));
}
}
else
{
if (Size == 0)
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF32ToU64));
}
else /* if (Size == 1) */
{
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.SatF64ToU64));
}
}
}
private static void EmitF2iFBitsMul(AILEmitterCtx Context, int Size, int FBits)
{
if (FBits != 0)
{
if (Size == 0)
{
Context.EmitLdc_R4(MathF.Pow(2, FBits));
}
else if (Size == 1)
{
Context.EmitLdc_R8(Math.Pow(2, FBits));
}
else
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
Context.Emit(OpCodes.Mul);
}
}
private static void EmitI2fFBitsMul(AILEmitterCtx Context, int Size, int FBits)
{
if (FBits != 0)
{
if (Size == 0)
{
Context.EmitLdc_R4(1f / MathF.Pow(2, FBits));
}
else if (Size == 1)
{
Context.EmitLdc_R8(1 / Math.Pow(2, FBits));
}
else
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
Context.Emit(OpCodes.Mul);
}
}
}
}