public static Operand[] GetHalfSrcA(EmitterContext context)
{
OpCode op = context.CurrOp;
bool absoluteA = false, negateA = false;
if (op is IOpCodeCbuf || op is IOpCodeImm)
{
negateA = op.RawOpCode.Extract(43);
absoluteA = op.RawOpCode.Extract(44);
}
else if (op is IOpCodeReg)
{
absoluteA = op.RawOpCode.Extract(44);
}
else if (op is OpCodeAluImm32 && op.Emitter == InstEmit.Hadd2)
{
negateA = op.RawOpCode.Extract(56);
}
FPHalfSwizzle swizzle = (FPHalfSwizzle)op.RawOpCode.Extract(47, 2);
Operand[] operands = GetHalfSources(context, GetSrcA(context), swizzle);
return(FPAbsNeg(context, operands, absoluteA, negateA));
}
public static Operand[] GetHalfSources(EmitterContext context, Operand src, FPHalfSwizzle swizzle)
{
switch (swizzle)
{
case FPHalfSwizzle.FP16:
return(new Operand[]
{
context.UnpackHalf2x16Low(src),
context.UnpackHalf2x16High(src)
});
case FPHalfSwizzle.FP32: return(new Operand[] { src, src });
case FPHalfSwizzle.DupH0:
return(new Operand[]
{
context.UnpackHalf2x16Low(src),
context.UnpackHalf2x16Low(src)
});
case FPHalfSwizzle.DupH1:
return(new Operand[]
{
context.UnpackHalf2x16High(src),
context.UnpackHalf2x16High(src)
});
}
throw new ArgumentException($"Invalid swizzle \"{swizzle}\".");
}
public static Operand GetHalfPacked(EmitterContext context, Operand[] results)
{
OpCode op = context.CurrOp;
FPHalfSwizzle swizzle = FPHalfSwizzle.FP16;
if (!(op is OpCodeAluImm32))
{
swizzle = (FPHalfSwizzle)context.CurrOp.RawOpCode.Extract(49, 2);
}
switch (swizzle)
{
case FPHalfSwizzle.FP16: return(context.PackHalf2x16(results[0], results[1]));
case FPHalfSwizzle.FP32: return(results[0]);
case FPHalfSwizzle.DupH0:
{
Operand h1 = GetHalfDest(context, isHigh: true);
return(context.PackHalf2x16(results[0], h1));
}
case FPHalfSwizzle.DupH1:
{
Operand h0 = GetHalfDest(context, isHigh: false);
return(context.PackHalf2x16(h0, results[1]));
}
}
throw new ArgumentException($"Invalid swizzle \"{swizzle}\".");
}
public static Operand[] GetHalfSrcB(EmitterContext context)
{
OpCode op = context.CurrOp;
FPHalfSwizzle swizzle = FPHalfSwizzle.FP16;
bool absoluteB = false, negateB = false;
if (op is IOpCodeReg)
{
swizzle = (FPHalfSwizzle)op.RawOpCode.Extract(28, 2);
absoluteB = op.RawOpCode.Extract(30);
negateB = op.RawOpCode.Extract(31);
}
else if (op is IOpCodeCbuf)
{
swizzle = FPHalfSwizzle.FP32;
absoluteB = op.RawOpCode.Extract(54);
}
Operand[] operands = GetHalfSources(context, GetSrcB(context), swizzle);
return(FPAbsNeg(context, operands, absoluteB, negateB));
}
public OpCodeHfma(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Rd = new Register(opCode.Extract(0, 8), RegisterType.Gpr);
Ra = new Register(opCode.Extract(8, 8), RegisterType.Gpr);
Rc = new Register(opCode.Extract(39, 8), RegisterType.Gpr);
SwizzleA = (FPHalfSwizzle)opCode.Extract(47, 2);
}
public OpCodeHfmaImm2x10(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Immediate = DecoderHelper.Decode2xF10Immediate(opCode);
NegateC = opCode.Extract(51);
Saturate = opCode.Extract(52);
SwizzleC = (FPHalfSwizzle)opCode.Extract(53, 2);
}
public OpCodeHfmaReg(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Rb = new Register(opCode.Extract(20, 8), RegisterType.Gpr);
SwizzleB = (FPHalfSwizzle)opCode.Extract(28, 2);
NegateC = opCode.Extract(30);
NegateB = opCode.Extract(31);
Saturate = opCode.Extract(32);
SwizzleC = (FPHalfSwizzle)opCode.Extract(35, 2);
}
public OpCodeHfmaRegCbuf(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
{
Offset = opCode.Extract(20, 14);
Slot = opCode.Extract(34, 5);
NegateC = opCode.Extract(51);
Saturate = opCode.Extract(52);
SwizzleB = (FPHalfSwizzle)opCode.Extract(53, 2);
NegateB = opCode.Extract(56);
}
