mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-11-09 02:41:45 +00:00
2f16491712
* Get rid of Reflection.Emit dependency on CPU and Shader projects * Remove useless private sets * Missed those due to the alignment
107 lines
No EOL
3.5 KiB
C#
107 lines
No EOL
3.5 KiB
C#
namespace ARMeilleure.Decoders
|
|
{
|
|
class OpCodeSimdImm : OpCode, IOpCodeSimd
|
|
{
|
|
public int Rd { get; }
|
|
public long Immediate { get; }
|
|
public int Size { get; }
|
|
|
|
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeSimdImm(inst, address, opCode);
|
|
|
|
public OpCodeSimdImm(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
|
|
{
|
|
Rd = opCode & 0x1f;
|
|
|
|
int cMode = (opCode >> 12) & 0xf;
|
|
int op = (opCode >> 29) & 0x1;
|
|
|
|
int modeLow = cMode & 1;
|
|
int modeHigh = cMode >> 1;
|
|
|
|
long imm;
|
|
|
|
imm = ((uint)opCode >> 5) & 0x1f;
|
|
imm |= ((uint)opCode >> 11) & 0xe0;
|
|
|
|
if (modeHigh == 0b111)
|
|
{
|
|
switch (op | (modeLow << 1))
|
|
{
|
|
case 0:
|
|
// 64-bits Immediate.
|
|
// Transform abcd efgh into abcd efgh abcd efgh ...
|
|
Size = 3;
|
|
imm = (long)((ulong)imm * 0x0101010101010101);
|
|
break;
|
|
|
|
case 1:
|
|
// 64-bits Immediate.
|
|
// Transform abcd efgh into aaaa aaaa bbbb bbbb ...
|
|
Size = 3;
|
|
imm = (imm & 0xf0) >> 4 | (imm & 0x0f) << 4;
|
|
imm = (imm & 0xcc) >> 2 | (imm & 0x33) << 2;
|
|
imm = (imm & 0xaa) >> 1 | (imm & 0x55) << 1;
|
|
|
|
imm = (long)((ulong)imm * 0x8040201008040201);
|
|
imm = (long)((ulong)imm & 0x8080808080808080);
|
|
|
|
imm |= imm >> 4;
|
|
imm |= imm >> 2;
|
|
imm |= imm >> 1;
|
|
break;
|
|
|
|
case 2:
|
|
// 2 x 32-bits floating point Immediate.
|
|
Size = 0;
|
|
imm = (long)DecoderHelper.Imm8ToFP32Table[(int)imm];
|
|
imm |= imm << 32;
|
|
break;
|
|
|
|
case 3:
|
|
// 64-bits floating point Immediate.
|
|
Size = 1;
|
|
imm = (long)DecoderHelper.Imm8ToFP64Table[(int)imm];
|
|
break;
|
|
}
|
|
}
|
|
else if ((modeHigh & 0b110) == 0b100)
|
|
{
|
|
// 16-bits shifted Immediate.
|
|
Size = 1; imm <<= (modeHigh & 1) << 3;
|
|
}
|
|
else if ((modeHigh & 0b100) == 0b000)
|
|
{
|
|
// 32-bits shifted Immediate.
|
|
Size = 2; imm <<= modeHigh << 3;
|
|
}
|
|
else if ((modeHigh & 0b111) == 0b110)
|
|
{
|
|
// 32-bits shifted Immediate (fill with ones).
|
|
Size = 2; imm = ShlOnes(imm, 8 << modeLow);
|
|
}
|
|
else
|
|
{
|
|
// 8-bits without shift.
|
|
Size = 0;
|
|
}
|
|
|
|
Immediate = imm;
|
|
|
|
RegisterSize = ((opCode >> 30) & 1) != 0
|
|
? RegisterSize.Simd128
|
|
: RegisterSize.Simd64;
|
|
}
|
|
|
|
private static long ShlOnes(long value, int shift)
|
|
{
|
|
if (shift != 0)
|
|
{
|
|
return value << shift | (long)(ulong.MaxValue >> (64 - shift));
|
|
}
|
|
else
|
|
{
|
|
return value;
|
|
}
|
|
}
|
|
}
|
|
} |