public OpCodeAluImm64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
if (DataOp == DataOp.Arithmetic)
{
Imm = (opCode >> 10) & 0xfff;
int shift = (opCode >> 22) & 3;
Imm <<= shift * 12;
}
else if (DataOp == DataOp.Logical)
{
var bm = DecoderHelper.DecodeBitMask(opCode, true);
if (bm.IsUndefined)
{
Emitter = InstEmit.Und;
return;
}
Imm = bm.WMask;
}
else
{
throw new ArgumentException(nameof(opCode));
}
}
public OpCodeAdr64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
Rd = opCode & 0x1f;
Imm = DecoderHelper.DecodeImmS19_2(opCode);
Imm |= ((long)opCode >> 29) & 3;
}
public OpCodeBImmTest64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
Rt = opCode & 0x1f;
Imm = position + DecoderHelper.DecodeImmS14_2(opCode);
Pos = (opCode >> 19) & 0x1f;
Pos |= (opCode >> 26) & 0x20;
}
public OpCodeBImmCmp64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
Rt = opCode & 0x1f;
Imm = position + DecoderHelper.DecodeImmS19_2(opCode);
RegisterSize = (opCode >> 31) != 0
? State.RegisterSize.Int64
: State.RegisterSize.Int32;
}
public OpCodeSimdImm64(Inst inst, long position, int opCode) : base(inst, position, 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)
{
Size = modeLow != 0 ? op : 3;
switch (op | (modeLow << 1))
{
case 0:
// 64-bits Immediate.
// Transform abcd efgh into abcd efgh abcd efgh ...
imm = (long)((ulong)imm * 0x0101010101010101);
break;
case 1:
// 64-bits Immediate.
// Transform abcd efgh into aaaa aaaa bbbb bbbb ...
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:
case 3:
// Floating point Immediate.
imm = DecoderHelper.DecodeImm8Float(imm, Size);
break;
}
}
else if ((modeHigh & 0b110) == 0b100)
{
// 16-bits shifted Immediate.
Size = 1; imm <<= (modeHigh & 1) << 3;
}
public OpCodeBImmCond64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
int o0 = (opCode >> 4) & 1;
if (o0 != 0)
{
Emitter = InstEmit.Und;
return;
}
Cond = (Condition)(opCode & 0xf);
Imm = position + DecoderHelper.DecodeImmS19_2(opCode);
}
public OpCodeBfm64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
var bm = DecoderHelper.DecodeBitMask(opCode, false);
if (bm.IsUndefined)
{
Emitter = InstEmit.Und;
return;
}
WMask = bm.WMask;
TMask = bm.TMask;
Pos = bm.Pos;
Shift = bm.Shift;
}
public OpCodeMemLit64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
Rt = opCode & 0x1f;
Imm = position + DecoderHelper.DecodeImmS19_2(opCode);
switch ((opCode >> 30) & 3)
{
case 0: Size = 2; Signed = false; Prefetch = false; break;
case 1: Size = 3; Signed = false; Prefetch = false; break;
case 2: Size = 2; Signed = true; Prefetch = false; break;
case 3: Size = 0; Signed = false; Prefetch = true; break;
}
}
public OpCodeSimdMemLit64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
int opc = (opCode >> 30) & 3;
if (opc == 3)
{
Emitter = InstEmit.Und;
return;
}
Rt = opCode & 0x1f;
Imm = position + DecoderHelper.DecodeImmS19_2(opCode);
Size = opc + 2;
}
public OpCode32BImm(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
uint pc = GetPc();
// When the condition is never, the instruction is BLX to Thumb mode.
if (Cond != Condition.Nv)
{
pc &= ~3u;
}
Imm = pc + DecoderHelper.DecodeImm24_2(opCode);
if (Cond == Condition.Nv)
{
long H = (opCode >> 23) & 2;
Imm |= H;
}
}
public OpCodeSimdFmov64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
int imm5 = (opCode >> 5) & 0x1f;
int type = (opCode >> 22) & 0x3;
if (imm5 != 0b00000 || type > 1)
{
Emitter = InstEmit.Und;
return;
}
Size = type;
long imm;
Rd = (opCode >> 0) & 0x1f;
imm = (opCode >> 13) & 0xff;
Imm = DecoderHelper.DecodeImm8Float(imm, type);
}
public OpCodeBImmAl64(Inst inst, long position, int opCode) : base(inst, position, opCode)
{
Imm = position + DecoderHelper.DecodeImm26_2(opCode);
}