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Add Rbit_V instruction. Add 8 tests (Rbit_V; Rev16_V, Rev32_V, Rev64_V). Improve CountSetBits8() algorithm. (#212)

Browse Source 
* Update AOpCodeTable.cs

* Update AInstEmitSimdArithmetic.cs

* Update AInstEmitSimdLogical.cs

* Update AVectorHelper.cs

* Update ASoftFallback.cs

* Update Instructions.cs

* Update CpuTestSimd.cs

* Update CpuTestSimdReg.cs

* Improve CountSetBits8() algorithm.

* Improve CountSetBits8() algorithm.
This commit is contained in:
LDj3SNuD 2018-07-03 08:31:16 +02:00 committed by gdkchan
parent d24ea0d51b
commit c228cf320d
8 changed files with 502 additions and 37 deletions
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1
ChocolArm64/AOpCodeTable.cs
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@ -348,6 +348,7 @@ namespace ChocolArm64
SetA64("0x001110101xxxxx000111xxxxxxxxxx", AInstEmit.Orr_V, typeof(AOpCodeSimdReg));
SetA64("0x00111100000xxx<<x101xxxxxxxxxx", AInstEmit.Orr_Vi, typeof(AOpCodeSimdImm));
SetA64("0x101110<<1xxxxx010000xxxxxxxxxx", AInstEmit.Raddhn_V, typeof(AOpCodeSimdReg));
SetA64("0x10111001100000010110xxxxxxxxxx", AInstEmit.Rbit_V, typeof(AOpCodeSimd));
SetA64("0x00111000100000000110xxxxxxxxxx", AInstEmit.Rev16_V, typeof(AOpCodeSimd));
SetA64("0x1011100x100000000010xxxxxxxxxx", AInstEmit.Rev32_V, typeof(AOpCodeSimd));
SetA64("0x001110<<100000000010xxxxxxxxxx", AInstEmit.Rev64_V, typeof(AOpCodeSimd));

4
ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
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@ -151,9 +151,9 @@ namespace ChocolArm64.Instruction
{
EmitVectorExtractZx(Context, Op.Rn, Index, 0);
Context.Emit(OpCodes.Conv_U1);
Context.Emit(OpCodes.Conv_U4);
AVectorHelper.EmitCall(Context, nameof(AVectorHelper.CountSetBits8));
ASoftFallback.EmitCall(Context, nameof(ASoftFallback.CountSetBits8));
Context.Emit(OpCodes.Conv_U8);

37
ChocolArm64/Instruction/AInstEmitSimdLogical.cs
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@ -56,8 +56,9 @@ namespace ChocolArm64.Instruction
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int Bytes = Context.CurrOp.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
for (int Index = 0; Index < (Bytes >> Op.Size); Index++)
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rd, Index, Op.Size);
EmitVectorExtractZx(Context, Op.Rn, Index, Op.Size);
@ -145,6 +146,31 @@ namespace ChocolArm64.Instruction
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);
@ -164,18 +190,17 @@ namespace ChocolArm64.Instruction
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int Bytes = Context.CurrOp.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
if (Op.Size >= ContainerSize)
{
throw new InvalidOperationException();
}
int Bytes = Context.CurrOp.GetBitsCount() >> 3;
int Elems = Bytes >> Op.Size;
int ContainerMask = (1 << (ContainerSize - Op.Size)) - 1;
for (int Index = 0; Index < (Bytes >> Op.Size); Index++)
for (int Index = 0; Index < Elems; Index++)
{
int RevIndex = Index ^ ContainerMask;

24
ChocolArm64/Instruction/ASoftFallback.cs
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@ -30,6 +30,14 @@ namespace ChocolArm64.Instruction
return (ulong)Size;
}
public static uint CountSetBits8(uint Value)
{
Value = ((Value >> 1) & 0x55) + (Value & 0x55);
Value = ((Value >> 2) & 0x33) + (Value & 0x33);
return (Value >> 4) + (Value & 0x0f);
}
private const uint Crc32RevPoly = 0xedb88320;
private const uint Crc32cRevPoly = 0x82f63b78;
@ -89,6 +97,14 @@ namespace ChocolArm64.Instruction
return Crc;
}
public static uint ReverseBits8(uint Value)
{
Value = ((Value & 0xaa) >> 1) | ((Value & 0x55) << 1);
Value = ((Value & 0xcc) >> 2) | ((Value & 0x33) << 2);
return (Value >> 4) | ((Value & 0x0f) << 4);
}
public static uint ReverseBits32(uint Value)
{
Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1);
@ -101,10 +117,10 @@ namespace ChocolArm64.Instruction
public static ulong ReverseBits64(ulong Value)
{
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1) | ((Value & 0x5555555555555555) << 1);
Value = ((Value & 0xcccccccccccccccc) >> 2) | ((Value & 0x3333333333333333) << 2);
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4);
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1 ) | ((Value & 0x5555555555555555) << 1 );
Value = ((Value & 0xcccccccccccccccc) >> 2 ) | ((Value & 0x3333333333333333) << 2 );
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4 ) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4 );
Value = ((Value & 0xff00ff00ff00ff00) >> 8 ) | ((Value & 0x00ff00ff00ff00ff) << 8 );
Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
return (Value >> 32) | (Value << 32);

8
ChocolArm64/Instruction/AVectorHelper.cs
View File

@ -93,14 +93,6 @@ namespace ChocolArm64.Instruction
Value < ulong.MinValue ? ulong.MinValue : (ulong)Value;
}
public static int CountSetBits8(byte Value)
{
return ((Value >> 0) & 1) + ((Value >> 1) & 1) +
((Value >> 2) & 1) + ((Value >> 3) & 1) +
((Value >> 4) & 1) + ((Value >> 5) & 1) +
((Value >> 6) & 1) + (Value >> 7);
}
public static double Max(double LHS, double RHS)
{
if (LHS == 0.0 && RHS == 0.0)

174
Ryujinx.Tests/Cpu/CpuTestSimd.cs
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@ -11,7 +11,7 @@ namespace Ryujinx.Tests.Cpu
using Tester;
using Tester.Types;
[Category("Simd")/*, Ignore("Tested: first half of 2018.")*/]
[Category("Simd")/*, Ignore("Tested: second half of 2018.")*/]
public sealed class CpuTestSimd : CpuTest
{
#if Simd
@ -775,6 +775,178 @@ namespace Ryujinx.Tests.Cpu
});
}
[Test, Description("RBIT <Vd>.<T>, <Vn>.<T>")]
public void Rbit_V_8B([ValueSource("_8B_")] [Random(1)] ulong A)
{
uint Opcode = 0x2E605820; // RBIT V0.8B, V1.8B
Bits Op = new Bits(Opcode);
Vector128<float> V0 = MakeVectorE1(TestContext.CurrentContext.Random.NextULong());
Vector128<float> V1 = MakeVectorE0(A);
AThreadState ThreadState = SingleOpcode(Opcode, V0: V0, V1: V1);
AArch64.V(1, new Bits(A));
SimdFp.Rbit_V(Op[30], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.V(64, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.Zero);
});
}
[Test, Pairwise, Description("RBIT <Vd>.<T>, <Vn>.<T>")]
public void Rbit_V_16B([ValueSource("_8B_")] [Random(1)] ulong A0,
[ValueSource("_8B_")] [Random(1)] ulong A1)
{
uint Opcode = 0x6E605820; // RBIT V0.16B, V1.16B
Bits Op = new Bits(Opcode);
Vector128<float> V1 = MakeVectorE0E1(A0, A1);
AThreadState ThreadState = SingleOpcode(Opcode, V1: V1);
AArch64.Vpart(1, 0, new Bits(A0));
AArch64.Vpart(1, 1, new Bits(A1));
SimdFp.Rbit_V(Op[30], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 1).ToUInt64()));
});
}
[Test, Description("REV16 <Vd>.<T>, <Vn>.<T>")]
public void Rev16_V_8B([ValueSource("_8B_")] [Random(1)] ulong A)
{
uint Opcode = 0x0E201820; // REV16 V0.8B, V1.8B
Bits Op = new Bits(Opcode);
Vector128<float> V0 = MakeVectorE1(TestContext.CurrentContext.Random.NextULong());
Vector128<float> V1 = MakeVectorE0(A);
AThreadState ThreadState = SingleOpcode(Opcode, V0: V0, V1: V1);
AArch64.V(1, new Bits(A));
SimdFp.Rev16_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.V(64, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.Zero);
});
}
[Test, Pairwise, Description("REV16 <Vd>.<T>, <Vn>.<T>")]
public void Rev16_V_16B([ValueSource("_8B_")] [Random(1)] ulong A0,
[ValueSource("_8B_")] [Random(1)] ulong A1)
{
uint Opcode = 0x4E201820; // REV16 V0.16B, V1.16B
Bits Op = new Bits(Opcode);
Vector128<float> V1 = MakeVectorE0E1(A0, A1);
AThreadState ThreadState = SingleOpcode(Opcode, V1: V1);
AArch64.Vpart(1, 0, new Bits(A0));
AArch64.Vpart(1, 1, new Bits(A1));
SimdFp.Rev16_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 1).ToUInt64()));
});
}
[Test, Description("REV32 <Vd>.<T>, <Vn>.<T>")]
public void Rev32_V_8B_4H([ValueSource("_8B4H_")] [Random(1)] ulong A,
[Values(0b00u, 0b01u)] uint size) // <8B, 4H>
{
uint Opcode = 0x2E200820; // REV32 V0.8B, V1.8B
Opcode |= ((size & 3) << 22);
Bits Op = new Bits(Opcode);
Vector128<float> V0 = MakeVectorE1(TestContext.CurrentContext.Random.NextULong());
Vector128<float> V1 = MakeVectorE0(A);
AThreadState ThreadState = SingleOpcode(Opcode, V0: V0, V1: V1);
AArch64.V(1, new Bits(A));
SimdFp.Rev32_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.V(64, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.Zero);
});
}
[Test, Pairwise, Description("REV32 <Vd>.<T>, <Vn>.<T>")]
public void Rev32_V_16B_8H([ValueSource("_8B4H_")] [Random(1)] ulong A0,
[ValueSource("_8B4H_")] [Random(1)] ulong A1,
[Values(0b00u, 0b01u)] uint size) // <16B, 8H>
{
uint Opcode = 0x6E200820; // REV32 V0.16B, V1.16B
Opcode |= ((size & 3) << 22);
Bits Op = new Bits(Opcode);
Vector128<float> V1 = MakeVectorE0E1(A0, A1);
AThreadState ThreadState = SingleOpcode(Opcode, V1: V1);
AArch64.Vpart(1, 0, new Bits(A0));
AArch64.Vpart(1, 1, new Bits(A1));
SimdFp.Rev32_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 1).ToUInt64()));
});
}
[Test, Description("REV64 <Vd>.<T>, <Vn>.<T>")]
public void Rev64_V_8B_4H_2S([ValueSource("_8B4H2S_")] [Random(1)] ulong A,
[Values(0b00u, 0b01u, 0b10u)] uint size) // <8B, 4H, 2S>
{
uint Opcode = 0x0E200820; // REV64 V0.8B, V1.8B
Opcode |= ((size & 3) << 22);
Bits Op = new Bits(Opcode);
Vector128<float> V0 = MakeVectorE1(TestContext.CurrentContext.Random.NextULong());
Vector128<float> V1 = MakeVectorE0(A);
AThreadState ThreadState = SingleOpcode(Opcode, V0: V0, V1: V1);
AArch64.V(1, new Bits(A));
SimdFp.Rev64_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.V(64, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.Zero);
});
}
[Test, Pairwise, Description("REV64 <Vd>.<T>, <Vn>.<T>")]
public void Rev64_V_16B_8H_4S([ValueSource("_8B4H2S_")] [Random(1)] ulong A0,
[ValueSource("_8B4H2S_")] [Random(1)] ulong A1,
[Values(0b00u, 0b01u, 0b10u)] uint size) // <16B, 8H, 4S>
{
uint Opcode = 0x4E200820; // REV64 V0.16B, V1.16B
Opcode |= ((size & 3) << 22);
Bits Op = new Bits(Opcode);
Vector128<float> V1 = MakeVectorE0E1(A0, A1);
AThreadState ThreadState = SingleOpcode(Opcode, V1: V1);
AArch64.Vpart(1, 0, new Bits(A0));
AArch64.Vpart(1, 1, new Bits(A1));
SimdFp.Rev64_V(Op[30], Op[23, 22], Op[9, 5], Op[4, 0]);
Assert.Multiple(() =>
{
Assert.That(GetVectorE0(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 0).ToUInt64()));
Assert.That(GetVectorE1(ThreadState.V0), Is.EqualTo(AArch64.Vpart(64, 0, 1).ToUInt64()));
});
}
[Test, Description("SQXTN <Vb><d>, <Va><n>")]
public void Sqxtn_S_HB_SH_DS([ValueSource("_1H1S1D_")] [Random(1)] ulong A,
[Values(0b00u, 0b01u, 0b10u)] uint size) // <HB, SH, DS>

2
Ryujinx.Tests/Cpu/CpuTestSimdReg.cs
View File

@ -11,7 +11,7 @@ namespace Ryujinx.Tests.Cpu
using Tester;
using Tester.Types;
[Category("SimdReg")/*, Ignore("Tested: first half of 2018.")*/]
[Category("SimdReg")/*, Ignore("Tested: second half of 2018.")*/]
public sealed class CpuTestSimdReg : CpuTest
{
#if SimdReg

287
Ryujinx.Tests/Cpu/Tester/Instructions.cs
View File

@ -1974,13 +1974,13 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
case Bits bits when bits == "01":
comparison = CompareOp.CompareOp_GE;
break;
default:
case Bits bits when bits == "10":
comparison = CompareOp.CompareOp_EQ;
break;
@ -2004,13 +2004,13 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
case CompareOp.CompareOp_GE:
test_passed = (element >= (BigInteger)0);
break;
default:
case CompareOp.CompareOp_EQ:
test_passed = (element == (BigInteger)0);
break;
@ -2048,13 +2048,13 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
case Bits bits when bits == "01":
comparison = CompareOp.CompareOp_GE;
break;
default:
case Bits bits when bits == "10":
comparison = CompareOp.CompareOp_EQ;
break;
@ -2078,13 +2078,13 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
case CompareOp.CompareOp_GE:
test_passed = (element >= (BigInteger)0);
break;
default:
case CompareOp.CompareOp_EQ:
test_passed = (element == (BigInteger)0);
break;
@ -2122,10 +2122,10 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
default:
case Bits bits when bits == "01":
comparison = CompareOp.CompareOp_GE;
break;
@ -2152,10 +2152,10 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
default:
case CompareOp.CompareOp_GE:
test_passed = (element >= (BigInteger)0);
break;
@ -2196,10 +2196,10 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
default:
case Bits bits when bits == "01":
comparison = CompareOp.CompareOp_GE;
break;
@ -2226,10 +2226,10 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
default:
case CompareOp.CompareOp_GE:
test_passed = (element >= (BigInteger)0);
break;
@ -2418,7 +2418,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
@ -2428,6 +2427,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case Bits bits when bits == "10":
comparison = CompareOp.CompareOp_EQ;
break;
default:
case Bits bits when bits == "11":
comparison = CompareOp.CompareOp_LE;
break;
@ -2448,7 +2448,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
@ -2458,6 +2457,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case CompareOp.CompareOp_EQ:
test_passed = (element == (BigInteger)0);
break;
default:
case CompareOp.CompareOp_LE:
test_passed = (element <= (BigInteger)0);
break;
@ -2492,7 +2492,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (Bits.Concat(op, U))
{
default:
case Bits bits when bits == "00":
comparison = CompareOp.CompareOp_GT;
break;
@ -2502,6 +2501,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case Bits bits when bits == "10":
comparison = CompareOp.CompareOp_EQ;
break;
default:
case Bits bits when bits == "11":
comparison = CompareOp.CompareOp_LE;
break;
@ -2522,7 +2522,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
@ -2532,6 +2531,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case CompareOp.CompareOp_EQ:
test_passed = (element == (BigInteger)0);
break;
default:
case CompareOp.CompareOp_LE:
test_passed = (element <= (BigInteger)0);
break;
@ -2576,7 +2576,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
@ -2589,6 +2588,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case CompareOp.CompareOp_LE:
test_passed = (element <= (BigInteger)0);
break;
default:
case CompareOp.CompareOp_LT:
test_passed = (element < (BigInteger)0);
break;
@ -2630,7 +2630,6 @@ namespace Ryujinx.Tests.Cpu.Tester
switch (comparison)
{
default:
case CompareOp.CompareOp_GT:
test_passed = (element > (BigInteger)0);
break;
@ -2643,6 +2642,7 @@ namespace Ryujinx.Tests.Cpu.Tester
case CompareOp.CompareOp_LE:
test_passed = (element <= (BigInteger)0);
break;
default:
case CompareOp.CompareOp_LT:
test_passed = (element < (BigInteger)0);
break;
@ -2801,6 +2801,265 @@ namespace Ryujinx.Tests.Cpu.Tester
V(d, result);
}
// rbit_advsimd.html
public static void Rbit_V(bool Q, Bits Rn, Bits Rd)
{
/* Decode Vector */
int d = (int)UInt(Rd);
int n = (int)UInt(Rn);
int esize = 8;
int datasize = (Q ? 128 : 64);
int elements = datasize / 8;
/* Operation */
/* CheckFPAdvSIMDEnabled64(); */
Bits result = new Bits(datasize);
Bits operand = V(datasize, n);
Bits element;
Bits rev = new Bits(esize);
for (int e = 0; e <= elements - 1; e++)
{
element = Elem(operand, e, esize);
for (int i = 0; i <= esize - 1; i++)
{
rev[esize - 1 - i] = element[i];
}
Elem(result, e, esize, rev);
}
V(d, result);
}
// rev16_advsimd.html
public static void Rev16_V(bool Q, Bits size, Bits Rn, Bits Rd)
{
const bool U = false;
const bool o0 = true;
/* Decode Vector */
int d = (int)UInt(Rd);
int n = (int)UInt(Rn);
// size=esize: B(0), H(1), S(1), D(S)
int esize = 8 << (int)UInt(size);
int datasize = (Q ? 128 : 64);
// op=REVx: 64(0), 32(1), 16(2)
Bits op = Bits.Concat(o0, U);
// => op+size:
// 64+B = 0, 64+H = 1, 64+S = 2, 64+D = X
// 32+B = 1, 32+H = 2, 32+S = X, 32+D = X
// 16+B = 2, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// => 3-(op+size) (index bits in group)
// 64/B = 3, 64+H = 2, 64+S = 1, 64+D = X
// 32+B = 2, 32+H = 1, 32+S = X, 32+D = X
// 16+B = 1, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// index bits within group: 1, 2, 3
/* if UInt(op) + UInt(size) >= 3 then UnallocatedEncoding(); */
int container_size;
switch (op)
{
default:
case Bits bits when bits == "10":
container_size = 16;
break;
case Bits bits when bits == "01":
container_size = 32;
break;
case Bits bits when bits == "00":
container_size = 64;
break;
}
int containers = datasize / container_size;
int elements_per_container = container_size / esize;
/* Operation */
/* CheckFPAdvSIMDEnabled64(); */
Bits result = new Bits(datasize);
Bits operand = V(datasize, n);
int element = 0;
int rev_element;
for (int c = 0; c <= containers - 1; c++)
{
rev_element = element + elements_per_container - 1;
for (int e = 0; e <= elements_per_container - 1; e++)
{
Elem(result, rev_element, esize, Elem(operand, element, esize));
element = element + 1;
rev_element = rev_element - 1;
}
}
V(d, result);
}
// rev32_advsimd.html
public static void Rev32_V(bool Q, Bits size, Bits Rn, Bits Rd)
{
const bool U = true;
const bool o0 = false;
/* Decode Vector */
int d = (int)UInt(Rd);
int n = (int)UInt(Rn);
// size=esize: B(0), H(1), S(1), D(S)
int esize = 8 << (int)UInt(size);
int datasize = (Q ? 128 : 64);
// op=REVx: 64(0), 32(1), 16(2)
Bits op = Bits.Concat(o0, U);
// => op+size:
// 64+B = 0, 64+H = 1, 64+S = 2, 64+D = X
// 32+B = 1, 32+H = 2, 32+S = X, 32+D = X
// 16+B = 2, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// => 3-(op+size) (index bits in group)
// 64/B = 3, 64+H = 2, 64+S = 1, 64+D = X
// 32+B = 2, 32+H = 1, 32+S = X, 32+D = X
// 16+B = 1, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// index bits within group: 1, 2, 3
/* if UInt(op) + UInt(size) >= 3 then UnallocatedEncoding(); */
int container_size;
switch (op)
{
case Bits bits when bits == "10":
container_size = 16;
break;
default:
case Bits bits when bits == "01":
container_size = 32;
break;
case Bits bits when bits == "00":
container_size = 64;
break;
}
int containers = datasize / container_size;
int elements_per_container = container_size / esize;
/* Operation */
/* CheckFPAdvSIMDEnabled64(); */
Bits result = new Bits(datasize);
Bits operand = V(datasize, n);
int element = 0;
int rev_element;
for (int c = 0; c <= containers - 1; c++)
{
rev_element = element + elements_per_container - 1;
for (int e = 0; e <= elements_per_container - 1; e++)
{
Elem(result, rev_element, esize, Elem(operand, element, esize));
element = element + 1;
rev_element = rev_element - 1;
}
}
V(d, result);
}
// rev64_advsimd.html
public static void Rev64_V(bool Q, Bits size, Bits Rn, Bits Rd)
{
const bool U = false;
const bool o0 = false;
/* Decode Vector */
int d = (int)UInt(Rd);
int n = (int)UInt(Rn);
// size=esize: B(0), H(1), S(1), D(S)
int esize = 8 << (int)UInt(size);
int datasize = (Q ? 128 : 64);
// op=REVx: 64(0), 32(1), 16(2)
Bits op = Bits.Concat(o0, U);
// => op+size:
// 64+B = 0, 64+H = 1, 64+S = 2, 64+D = X
// 32+B = 1, 32+H = 2, 32+S = X, 32+D = X
// 16+B = 2, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// => 3-(op+size) (index bits in group)
// 64/B = 3, 64+H = 2, 64+S = 1, 64+D = X
// 32+B = 2, 32+H = 1, 32+S = X, 32+D = X
// 16+B = 1, 16+H = X, 16+S = X, 16+D = X
// 8+B = X, 8+H = X, 8+S = X, 8+D = X
// index bits within group: 1, 2, 3
/* if UInt(op) + UInt(size) >= 3 then UnallocatedEncoding(); */
int container_size;
switch (op)
{
case Bits bits when bits == "10":
container_size = 16;
break;
case Bits bits when bits == "01":
container_size = 32;
break;
default:
case Bits bits when bits == "00":
container_size = 64;
break;
}
int containers = datasize / container_size;
int elements_per_container = container_size / esize;
/* Operation */
/* CheckFPAdvSIMDEnabled64(); */
Bits result = new Bits(datasize);
Bits operand = V(datasize, n);
int element = 0;
int rev_element;
for (int c = 0; c <= containers - 1; c++)
{
rev_element = element + elements_per_container - 1;
for (int e = 0; e <= elements_per_container - 1; e++)
{
Elem(result, rev_element, esize, Elem(operand, element, esize));
element = element + 1;
rev_element = rev_element - 1;
}
}
V(d, result);
}
// sqxtn_advsimd.html#SQXTN_asisdmisc_N
public static void Sqxtn_S(Bits size, Bits Rn, Bits Rd)
{