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Fix/Add 10 Shift Right and Mls_Ve Instructions; add 14 Tests. (#407)

Browse source 
* Update AOpCodeTable.cs

* Update AInstEmitSimdShift.cs

* Update ASoftFallback.cs

* Update AOpCodeSimdShImm.cs

* Update ABitUtils.cs

* Update AInstEmitSimdArithmetic.cs

* Update AInstEmitSimdHelper.cs

* Create CpuTestSimdShImm.cs

* Create CpuTestSimdRegElem.cs

* Address PR feedback.

* Nit.

* Nit.
This commit is contained in:
LDj3SNuD 2018-09-08 19:24:29 +02:00 committed by gdkchan
parent 1be39f720f
commit 80836050ef
7 changed files with 255 additions and 98 deletions
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4
ABitUtils.cs
View file

@ -27,6 +27,10 @@ namespace ChocolArm64
return -1; return -1;
} }
private static readonly sbyte[] HbsNibbleTbl = { -1, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3 };
public static int HighestBitSetNibble(int Value) => HbsNibbleTbl[Value & 0b1111];
public static long Replicate(long Bits, int Size) public static long Replicate(long Bits, int Size)
{ {
long Output = 0; long Output = 0;

18
AOpCodeTable.cs
View file

@ -343,6 +343,7 @@ namespace ChocolArm64
SetA64("0x001110<<1xxxxx100101xxxxxxxxxx", AInstEmit.Mla_V, typeof(AOpCodeSimdReg)); SetA64("0x001110<<1xxxxx100101xxxxxxxxxx", AInstEmit.Mla_V, typeof(AOpCodeSimdReg));
SetA64("0x101111xxxxxxxx0000x0xxxxxxxxxx", AInstEmit.Mla_Ve, typeof(AOpCodeSimdRegElem)); SetA64("0x101111xxxxxxxx0000x0xxxxxxxxxx", AInstEmit.Mla_Ve, typeof(AOpCodeSimdRegElem));
SetA64("0x101110<<1xxxxx100101xxxxxxxxxx", AInstEmit.Mls_V, typeof(AOpCodeSimdReg)); SetA64("0x101110<<1xxxxx100101xxxxxxxxxx", AInstEmit.Mls_V, typeof(AOpCodeSimdReg));
SetA64("0x101111xxxxxxxx0100x0xxxxxxxxxx", AInstEmit.Mls_Ve, typeof(AOpCodeSimdRegElem));
SetA64("0x00111100000xxx0xx001xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm)); SetA64("0x00111100000xxx0xx001xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm));
SetA64("0x00111100000xxx10x001xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm)); SetA64("0x00111100000xxx10x001xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm));
SetA64("0x00111100000xxx110x01xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm)); SetA64("0x00111100000xxx110x01xxxxxxxxxx", AInstEmit.Movi_V, typeof(AOpCodeSimdImm));
@ -380,8 +381,9 @@ namespace ChocolArm64
SetA64("0101111000101000001010xxxxxxxxxx", AInstEmit.Sha256su0_V, typeof(AOpCodeSimd)); SetA64("0101111000101000001010xxxxxxxxxx", AInstEmit.Sha256su0_V, typeof(AOpCodeSimd));
SetA64("01011110000xxxxx011000xxxxxxxxxx", AInstEmit.Sha256su1_V, typeof(AOpCodeSimdReg)); SetA64("01011110000xxxxx011000xxxxxxxxxx", AInstEmit.Sha256su1_V, typeof(AOpCodeSimdReg));
SetA64("0x001110<<1xxxxx000001xxxxxxxxxx", AInstEmit.Shadd_V, typeof(AOpCodeSimdReg)); SetA64("0x001110<<1xxxxx000001xxxxxxxxxx", AInstEmit.Shadd_V, typeof(AOpCodeSimdReg));
SetA64("010111110>>>>xxx010101xxxxxxxxxx", AInstEmit.Shl_S, typeof(AOpCodeSimdShImm)); SetA64("0101111101xxxxxx010101xxxxxxxxxx", AInstEmit.Shl_S, typeof(AOpCodeSimdShImm));
SetA64("0x0011110>>>>xxx010101xxxxxxxxxx", AInstEmit.Shl_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx010101xxxxxxxxxx", AInstEmit.Shl_V, typeof(AOpCodeSimdShImm));
SetA64("0100111101xxxxxx010101xxxxxxxxxx", AInstEmit.Shl_V, typeof(AOpCodeSimdShImm));
SetA64("0x101110<<100001001110xxxxxxxxxx", AInstEmit.Shll_V, typeof(AOpCodeSimd)); SetA64("0x101110<<100001001110xxxxxxxxxx", AInstEmit.Shll_V, typeof(AOpCodeSimd));
SetA64("0x00111100>>>xxx100001xxxxxxxxxx", AInstEmit.Shrn_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx100001xxxxxxxxxx", AInstEmit.Shrn_V, typeof(AOpCodeSimdShImm));
SetA64("0x001110<<1xxxxx001001xxxxxxxxxx", AInstEmit.Shsub_V, typeof(AOpCodeSimdReg)); SetA64("0x001110<<1xxxxx001001xxxxxxxxxx", AInstEmit.Shsub_V, typeof(AOpCodeSimdReg));
@ -415,13 +417,18 @@ namespace ChocolArm64
SetA64("01111110<<100001001010xxxxxxxxxx", AInstEmit.Sqxtun_S, typeof(AOpCodeSimd)); SetA64("01111110<<100001001010xxxxxxxxxx", AInstEmit.Sqxtun_S, typeof(AOpCodeSimd));
SetA64("0x101110<<100001001010xxxxxxxxxx", AInstEmit.Sqxtun_V, typeof(AOpCodeSimd)); SetA64("0x101110<<100001001010xxxxxxxxxx", AInstEmit.Sqxtun_V, typeof(AOpCodeSimd));
SetA64("0x001110<<1xxxxx000101xxxxxxxxxx", AInstEmit.Srhadd_V, typeof(AOpCodeSimdReg)); SetA64("0x001110<<1xxxxx000101xxxxxxxxxx", AInstEmit.Srhadd_V, typeof(AOpCodeSimdReg));
SetA64("0101111101xxxxxx001001xxxxxxxxxx", AInstEmit.Srshr_S, typeof(AOpCodeSimdShImm));
SetA64("0x00111100>>>xxx001001xxxxxxxxxx", AInstEmit.Srshr_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx001001xxxxxxxxxx", AInstEmit.Srshr_V, typeof(AOpCodeSimdShImm));
SetA64("0100111101xxxxxx001001xxxxxxxxxx", AInstEmit.Srshr_V, typeof(AOpCodeSimdShImm)); SetA64("0100111101xxxxxx001001xxxxxxxxxx", AInstEmit.Srshr_V, typeof(AOpCodeSimdShImm));
SetA64("0101111101xxxxxx001101xxxxxxxxxx", AInstEmit.Srsra_S, typeof(AOpCodeSimdShImm));
SetA64("0x00111100>>>xxx001101xxxxxxxxxx", AInstEmit.Srsra_V, typeof(AOpCodeSimdShImm));
SetA64("0100111101xxxxxx001101xxxxxxxxxx", AInstEmit.Srsra_V, typeof(AOpCodeSimdShImm));
SetA64("0>001110<<1xxxxx010001xxxxxxxxxx", AInstEmit.Sshl_V, typeof(AOpCodeSimdReg)); SetA64("0>001110<<1xxxxx010001xxxxxxxxxx", AInstEmit.Sshl_V, typeof(AOpCodeSimdReg));
SetA64("0x00111100>>>xxx101001xxxxxxxxxx", AInstEmit.Sshll_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx101001xxxxxxxxxx", AInstEmit.Sshll_V, typeof(AOpCodeSimdShImm));
SetA64("0101111101xxxxxx000001xxxxxxxxxx", AInstEmit.Sshr_S, typeof(AOpCodeSimdShImm)); SetA64("0101111101xxxxxx000001xxxxxxxxxx", AInstEmit.Sshr_S, typeof(AOpCodeSimdShImm));
SetA64("0x00111100>>>xxx000001xxxxxxxxxx", AInstEmit.Sshr_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx000001xxxxxxxxxx", AInstEmit.Sshr_V, typeof(AOpCodeSimdShImm));
SetA64("0100111101xxxxxx000001xxxxxxxxxx", AInstEmit.Sshr_V, typeof(AOpCodeSimdShImm)); SetA64("0100111101xxxxxx000001xxxxxxxxxx", AInstEmit.Sshr_V, typeof(AOpCodeSimdShImm));
SetA64("0101111101xxxxxx000101xxxxxxxxxx", AInstEmit.Ssra_S, typeof(AOpCodeSimdShImm));
SetA64("0x00111100>>>xxx000101xxxxxxxxxx", AInstEmit.Ssra_V, typeof(AOpCodeSimdShImm)); SetA64("0x00111100>>>xxx000101xxxxxxxxxx", AInstEmit.Ssra_V, typeof(AOpCodeSimdShImm));
SetA64("0100111101xxxxxx000101xxxxxxxxxx", AInstEmit.Ssra_V, typeof(AOpCodeSimdShImm)); SetA64("0100111101xxxxxx000101xxxxxxxxxx", AInstEmit.Ssra_V, typeof(AOpCodeSimdShImm));
SetA64("0x001110<<1xxxxx001000xxxxxxxxxx", AInstEmit.Ssubl_V, typeof(AOpCodeSimdReg)); SetA64("0x001110<<1xxxxx001000xxxxxxxxxx", AInstEmit.Ssubl_V, typeof(AOpCodeSimdReg));
@ -474,6 +481,12 @@ namespace ChocolArm64
SetA64("01111110<<100001010010xxxxxxxxxx", AInstEmit.Uqxtn_S, typeof(AOpCodeSimd)); SetA64("01111110<<100001010010xxxxxxxxxx", AInstEmit.Uqxtn_S, typeof(AOpCodeSimd));
SetA64("0x101110<<100001010010xxxxxxxxxx", AInstEmit.Uqxtn_V, typeof(AOpCodeSimd)); SetA64("0x101110<<100001010010xxxxxxxxxx", AInstEmit.Uqxtn_V, typeof(AOpCodeSimd));
SetA64("0x101110<<1xxxxx000101xxxxxxxxxx", AInstEmit.Urhadd_V, typeof(AOpCodeSimdReg)); SetA64("0x101110<<1xxxxx000101xxxxxxxxxx", AInstEmit.Urhadd_V, typeof(AOpCodeSimdReg));
SetA64("0111111101xxxxxx001001xxxxxxxxxx", AInstEmit.Urshr_S, typeof(AOpCodeSimdShImm));
SetA64("0x10111100>>>xxx001001xxxxxxxxxx", AInstEmit.Urshr_V, typeof(AOpCodeSimdShImm));
SetA64("0110111101xxxxxx001001xxxxxxxxxx", AInstEmit.Urshr_V, typeof(AOpCodeSimdShImm));
SetA64("0111111101xxxxxx001101xxxxxxxxxx", AInstEmit.Ursra_S, typeof(AOpCodeSimdShImm));
SetA64("0x10111100>>>xxx001101xxxxxxxxxx", AInstEmit.Ursra_V, typeof(AOpCodeSimdShImm));
SetA64("0110111101xxxxxx001101xxxxxxxxxx", AInstEmit.Ursra_V, typeof(AOpCodeSimdShImm));
SetA64("0>101110<<1xxxxx010001xxxxxxxxxx", AInstEmit.Ushl_V, typeof(AOpCodeSimdReg)); SetA64("0>101110<<1xxxxx010001xxxxxxxxxx", AInstEmit.Ushl_V, typeof(AOpCodeSimdReg));
SetA64("0x10111100>>>xxx101001xxxxxxxxxx", AInstEmit.Ushll_V, typeof(AOpCodeSimdShImm)); SetA64("0x10111100>>>xxx101001xxxxxxxxxx", AInstEmit.Ushll_V, typeof(AOpCodeSimdShImm));
SetA64("0111111101xxxxxx000001xxxxxxxxxx", AInstEmit.Ushr_S, typeof(AOpCodeSimdShImm)); SetA64("0111111101xxxxxx000001xxxxxxxxxx", AInstEmit.Ushr_S, typeof(AOpCodeSimdShImm));
@ -481,6 +494,7 @@ namespace ChocolArm64
SetA64("0110111101xxxxxx000001xxxxxxxxxx", AInstEmit.Ushr_V, typeof(AOpCodeSimdShImm)); SetA64("0110111101xxxxxx000001xxxxxxxxxx", AInstEmit.Ushr_V, typeof(AOpCodeSimdShImm));
SetA64("01111110xx100000001110xxxxxxxxxx", AInstEmit.Usqadd_S, typeof(AOpCodeSimd)); SetA64("01111110xx100000001110xxxxxxxxxx", AInstEmit.Usqadd_S, typeof(AOpCodeSimd));
SetA64("0>101110<<100000001110xxxxxxxxxx", AInstEmit.Usqadd_V, typeof(AOpCodeSimd)); SetA64("0>101110<<100000001110xxxxxxxxxx", AInstEmit.Usqadd_V, typeof(AOpCodeSimd));
SetA64("0111111101xxxxxx000101xxxxxxxxxx", AInstEmit.Usra_S, typeof(AOpCodeSimdShImm));
SetA64("0x10111100>>>xxx000101xxxxxxxxxx", AInstEmit.Usra_V, typeof(AOpCodeSimdShImm)); SetA64("0x10111100>>>xxx000101xxxxxxxxxx", AInstEmit.Usra_V, typeof(AOpCodeSimdShImm));
SetA64("0110111101xxxxxx000101xxxxxxxxxx", AInstEmit.Usra_V, typeof(AOpCodeSimdShImm)); SetA64("0110111101xxxxxx000101xxxxxxxxxx", AInstEmit.Usra_V, typeof(AOpCodeSimdShImm));
SetA64("0x101110<<1xxxxx001000xxxxxxxxxx", AInstEmit.Usubl_V, typeof(AOpCodeSimdReg)); SetA64("0x101110<<1xxxxx001000xxxxxxxxxx", AInstEmit.Usubl_V, typeof(AOpCodeSimdReg));

2
Decoder/AOpCodeSimdShImm.cs
View file

@ -10,7 +10,7 @@ namespace ChocolArm64.Decoder
{ {
Imm = (OpCode >> 16) & 0x7f; Imm = (OpCode >> 16) & 0x7f;
Size = ABitUtils.HighestBitSet32(Imm >> 3); Size = ABitUtils.HighestBitSetNibble(Imm >> 3);
} }
} }
} }

9
Instruction/AInstEmitSimdArithmetic.cs
View file

@ -957,6 +957,15 @@ namespace ChocolArm64.Instruction
}); });
} }
public static void Mls_Ve(AILEmitterCtx Context)
{
EmitVectorTernaryOpByElemZx(Context, () =>
{
Context.Emit(OpCodes.Mul);
Context.Emit(OpCodes.Sub);
});
}
public static void Mul_V(AILEmitterCtx Context) public static void Mul_V(AILEmitterCtx Context)
{ {
EmitVectorBinaryOpZx(Context, () => Context.Emit(OpCodes.Mul)); EmitVectorBinaryOpZx(Context, () => Context.Emit(OpCodes.Mul));

5
Instruction/AInstEmitSimdHelper.cs
View file

@ -626,6 +626,9 @@ namespace ChocolArm64.Instruction
int Bytes = Op.GetBitsCount() >> 3; int Bytes = Op.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size; int Elems = Bytes >> Op.Size;
EmitVectorExtract(Context, Op.Rm, Elem, Op.Size, Signed);
Context.EmitSttmp();
for (int Index = 0; Index < Elems; Index++) for (int Index = 0; Index < Elems; Index++)
{ {
if (Ternary) if (Ternary)
@ -634,7 +637,7 @@ namespace ChocolArm64.Instruction
} }
EmitVectorExtract(Context, Op.Rn, Index, Op.Size, Signed); EmitVectorExtract(Context, Op.Rn, Index, Op.Size, Signed);
EmitVectorExtract(Context, Op.Rm, Elem, Op.Size, Signed); Context.EmitLdtmp();
Emit(); Emit();

213
Instruction/AInstEmitSimdShift.cs
View file

@ -14,20 +14,24 @@ namespace ChocolArm64.Instruction
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
EmitVectorExtractZx(Context, Op.Rn, 0, Op.Size); EmitScalarUnaryOpZx(Context, () =>
{
Context.EmitLdc_I4(GetImmShl(Op)); Context.EmitLdc_I4(GetImmShl(Op));
Context.Emit(OpCodes.Shl); Context.Emit(OpCodes.Shl);
});
EmitScalarSet(Context, Op.Rd, Op.Size);
} }
public static void Shl_V(AILEmitterCtx Context) public static void Shl_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
EmitVectorShImmBinaryZx(Context, () => Context.Emit(OpCodes.Shl), GetImmShl(Op)); EmitVectorUnaryOpZx(Context, () =>
{
Context.EmitLdc_I4(GetImmShl(Op));
Context.Emit(OpCodes.Shl);
});
} }
public static void Shll_V(AILEmitterCtx Context) public static void Shll_V(AILEmitterCtx Context)
@ -103,15 +107,24 @@ namespace ChocolArm64.Instruction
EmitVectorSaturatingNarrowOpSxSx(Context, Emit); EmitVectorSaturatingNarrowOpSxSx(Context, Emit);
} }
public static void Srshr_S(AILEmitterCtx Context)
{
EmitScalarShrImmOpSx(Context, ShrImmFlags.Round);
}
public static void Srshr_V(AILEmitterCtx Context) public static void Srshr_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitVectorShrImmOpSx(Context, ShrImmFlags.Round);
}
int Shift = GetImmShr(Op); public static void Srsra_S(AILEmitterCtx Context)
{
EmitScalarShrImmOpSx(Context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
}
long RoundConst = 1L << (Shift - 1); public static void Srsra_V(AILEmitterCtx Context)
{
EmitVectorRoundShImmBinarySx(Context, () => Context.Emit(OpCodes.Shr), Shift, RoundConst); EmitVectorShrImmOpSx(Context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
} }
public static void Sshl_V(AILEmitterCtx Context) public static void Sshl_V(AILEmitterCtx Context)
@ -128,35 +141,42 @@ namespace ChocolArm64.Instruction
public static void Sshr_S(AILEmitterCtx Context) public static void Sshr_S(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitShrImmOp(Context, ShrImmFlags.ScalarSx);
EmitVectorExtractSx(Context, Op.Rn, 0, Op.Size);
Context.EmitLdc_I4(GetImmShr(Op));
Context.Emit(OpCodes.Shr);
EmitScalarSet(Context, Op.Rd, Op.Size);
} }
public static void Sshr_V(AILEmitterCtx Context) public static void Sshr_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitShrImmOp(Context, ShrImmFlags.VectorSx);
}
EmitVectorShImmBinarySx(Context, () => Context.Emit(OpCodes.Shr), GetImmShr(Op)); public static void Ssra_S(AILEmitterCtx Context)
{
EmitScalarShrImmOpSx(Context, ShrImmFlags.Accumulate);
} }
public static void Ssra_V(AILEmitterCtx Context) public static void Ssra_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitVectorShrImmOpSx(Context, ShrImmFlags.Accumulate);
}
Action Emit = () => public static void Urshr_S(AILEmitterCtx Context)
{ {
Context.Emit(OpCodes.Shr); EmitScalarShrImmOpZx(Context, ShrImmFlags.Round);
Context.Emit(OpCodes.Add); }
};
EmitVectorShImmTernarySx(Context, Emit, GetImmShr(Op)); public static void Urshr_V(AILEmitterCtx Context)
{
EmitVectorShrImmOpZx(Context, ShrImmFlags.Round);
}
public static void Ursra_S(AILEmitterCtx Context)
{
EmitScalarShrImmOpZx(Context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
}
public static void Ursra_V(AILEmitterCtx Context)
{
EmitVectorShrImmOpZx(Context, ShrImmFlags.Round | ShrImmFlags.Accumulate);
} }
public static void Ushl_V(AILEmitterCtx Context) public static void Ushl_V(AILEmitterCtx Context)
@ -173,41 +193,22 @@ namespace ChocolArm64.Instruction
public static void Ushr_S(AILEmitterCtx Context) public static void Ushr_S(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitShrImmOp(Context, ShrImmFlags.ScalarZx);
EmitScalarUnaryOpZx(Context, () =>
{
Context.EmitLdc_I4(GetImmShr(Op));
Context.Emit(OpCodes.Shr_Un);
});
} }
public static void Ushr_V(AILEmitterCtx Context) public static void Ushr_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitShrImmOp(Context, ShrImmFlags.VectorZx);
}
EmitVectorUnaryOpZx(Context, () => public static void Usra_S(AILEmitterCtx Context)
{ {
Context.EmitLdc_I4(GetImmShr(Op)); EmitScalarShrImmOpZx(Context, ShrImmFlags.Accumulate);
Context.Emit(OpCodes.Shr_Un);
});
} }
public static void Usra_V(AILEmitterCtx Context) public static void Usra_V(AILEmitterCtx Context)
{ {
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp; EmitVectorShrImmOpZx(Context, ShrImmFlags.Accumulate);
Action Emit = () =>
{
Context.EmitLdc_I4(GetImmShr(Op));
Context.Emit(OpCodes.Shr_Un);
Context.Emit(OpCodes.Add);
};
EmitVectorOp(Context, Emit, OperFlags.RdRn, Signed: false);
} }
private static void EmitVectorShl(AILEmitterCtx Context, bool Signed) private static void EmitVectorShl(AILEmitterCtx Context, bool Signed)
@ -274,78 +275,118 @@ namespace ChocolArm64.Instruction
} }
[Flags] [Flags]
private enum ShImmFlags private enum ShrImmFlags
{ {
None = 0, Scalar = 1 << 0,
Signed = 1 << 1,
Signed = 1 << 0, Round = 1 << 2,
Ternary = 1 << 1, Accumulate = 1 << 3,
Rounded = 1 << 2,
SignedTernary = Signed | Ternary, ScalarSx = Scalar | Signed,
SignedRounded = Signed | Rounded ScalarZx = Scalar,
VectorSx = Signed,
VectorZx = 0
} }
private static void EmitVectorShImmBinarySx(AILEmitterCtx Context, Action Emit, int Imm) private static void EmitScalarShrImmOpSx(AILEmitterCtx Context, ShrImmFlags Flags)
{ {
EmitVectorShImmOp(Context, Emit, Imm, ShImmFlags.Signed); EmitShrImmOp(Context, ShrImmFlags.ScalarSx | Flags);
} }
private static void EmitVectorShImmTernarySx(AILEmitterCtx Context, Action Emit, int Imm) private static void EmitScalarShrImmOpZx(AILEmitterCtx Context, ShrImmFlags Flags)
{ {
EmitVectorShImmOp(Context, Emit, Imm, ShImmFlags.SignedTernary); EmitShrImmOp(Context, ShrImmFlags.ScalarZx | Flags);
} }
private static void EmitVectorShImmBinaryZx(AILEmitterCtx Context, Action Emit, int Imm) private static void EmitVectorShrImmOpSx(AILEmitterCtx Context, ShrImmFlags Flags)
{ {
EmitVectorShImmOp(Context, Emit, Imm, ShImmFlags.None); EmitShrImmOp(Context, ShrImmFlags.VectorSx | Flags);
} }
private static void EmitVectorRoundShImmBinarySx(AILEmitterCtx Context, Action Emit, int Imm, long Rc) private static void EmitVectorShrImmOpZx(AILEmitterCtx Context, ShrImmFlags Flags)
{ {
EmitVectorShImmOp(Context, Emit, Imm, ShImmFlags.SignedRounded, Rc); EmitShrImmOp(Context, ShrImmFlags.VectorZx | Flags);
} }
private static void EmitVectorShImmOp(AILEmitterCtx Context, Action Emit, int Imm, ShImmFlags Flags, long Rc = 0) private static void EmitShrImmOp(AILEmitterCtx Context, ShrImmFlags Flags)
{ {
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp; AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
bool Scalar = (Flags & ShrImmFlags.Scalar) != 0;
bool Signed = (Flags & ShrImmFlags.Signed) != 0;
bool Round = (Flags & ShrImmFlags.Round) != 0;
bool Accumulate = (Flags & ShrImmFlags.Accumulate) != 0;
int Shift = GetImmShr(Op);
long RoundConst = 1L << (Shift - 1);
int Bytes = Op.GetBitsCount() >> 3; int Bytes = Op.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size; int Elems = !Scalar ? Bytes >> Op.Size : 1;
bool Signed = (Flags & ShImmFlags.Signed) != 0;
bool Ternary = (Flags & ShImmFlags.Ternary) != 0;
bool Rounded = (Flags & ShImmFlags.Rounded) != 0;
for (int Index = 0; Index < Elems; Index++) for (int Index = 0; Index < Elems; Index++)
{ {
if (Ternary)
{
EmitVectorExtract(Context, Op.Rd, Index, Op.Size, Signed);
}
EmitVectorExtract(Context, Op.Rn, Index, Op.Size, Signed); EmitVectorExtract(Context, Op.Rn, Index, Op.Size, Signed);
if (Rounded) if (Op.Size <= 2)
{ {
Context.EmitLdc_I8(Rc); if (Round)
{
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add); Context.Emit(OpCodes.Add);
} }
Context.EmitLdc_I4(Imm); Context.EmitLdc_I4(Shift);
Emit(); Context.Emit(Signed ? OpCodes.Shr : OpCodes.Shr_Un);
}
EmitVectorInsert(Context, Op.Rd, Index, Op.Size); else /* if (Op.Size == 3) */
{
EmitShrImm_64(Context, Signed, Round ? RoundConst : 0L, Shift);
} }
if (Op.RegisterSize == ARegisterSize.SIMD64) if (Accumulate)
{
EmitVectorExtract(Context, Op.Rd, Index, Op.Size, Signed);
Context.Emit(OpCodes.Add);
}
EmitVectorInsertTmp(Context, Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if ((Op.RegisterSize == ARegisterSize.SIMD64) || Scalar)
{ {
EmitVectorZeroUpper(Context, Op.Rd); EmitVectorZeroUpper(Context, Op.Rd);
} }
} }
// Dst_64 = (Int(Src_64, Signed) + RoundConst) >> Shift;
private static void EmitShrImm_64(
AILEmitterCtx Context,
bool Signed,
long RoundConst,
int Shift)
{
if (((AOpCodeSimd)Context.CurrOp).Size < 3)
{
throw new InvalidOperationException();
}
Context.EmitLdc_I8(RoundConst);
Context.EmitLdc_I4(Shift);
ASoftFallback.EmitCall(Context, Signed
? nameof(ASoftFallback.SignedShrImm_64)
: nameof(ASoftFallback.UnsignedShrImm_64));
}
private static void EmitVectorShImmNarrowBinarySx(AILEmitterCtx Context, Action Emit, int Imm) private static void EmitVectorShImmNarrowBinarySx(AILEmitterCtx Context, Action Emit, int Imm)
{ {
EmitVectorShImmNarrowBinaryOp(Context, Emit, Imm, true); EmitVectorShImmNarrowBinaryOp(Context, Emit, Imm, true);

86
Instruction/ASoftFallback.cs
View file

@ -16,6 +16,92 @@ namespace ChocolArm64.Instruction
Context.EmitCall(typeof(ASoftFallback), MthdName); Context.EmitCall(typeof(ASoftFallback), MthdName);
} }
#region "ShrImm_64"
public static long SignedShrImm_64(long Value, long RoundConst, int Shift)
{
if (RoundConst == 0L)
{
if (Shift <= 63)
{
return Value >> Shift;
}
else /* if (Shift == 64) */
{
if (Value < 0L)
{
return -1L;
}
else
{
return 0L;
}
}
}
else /* if (RoundConst == 1L << (Shift - 1)) */
{
if (Shift <= 63)
{
long Add = Value + RoundConst;
if ((~Value & (Value ^ Add)) < 0L)
{
return (long)((ulong)Add >> Shift);
}
else
{
return Add >> Shift;
}
}
else /* if (Shift == 64) */
{
return 0L;
}
}
}
public static ulong UnsignedShrImm_64(ulong Value, long RoundConst, int Shift)
{
if (RoundConst == 0L)
{
if (Shift <= 63)
{
return Value >> Shift;
}
else /* if (Shift == 64) */
{
return 0UL;
}
}
else /* if (RoundConst == 1L << (Shift - 1)) */
{
ulong Add = Value + (ulong)RoundConst;
if ((Add < Value) && (Add < (ulong)RoundConst))
{
if (Shift <= 63)
{
return (Add >> Shift) | (0x8000000000000000UL >> (Shift - 1));
}
else /* if (Shift == 64) */
{
return 1UL;
}
}
else
{
if (Shift <= 63)
{
return Add >> Shift;
}
else /* if (Shift == 64) */
{
return 0UL;
}
}
}
}
#endregion
#region "Saturating" #region "Saturating"
public static long SignedSrcSignedDstSatQ(long op, int Size, AThreadState State) public static long SignedSrcSignedDstSatQ(long op, int Size, AThreadState State)
{ {