public override PowerPcInstruction Decode(uint wInstr, PowerPcDisassembler dasm)
{
var ops = new List <MachineOperand> {
dasm.RegFromBits(wInstr >> 21)
};
var spr = ((wInstr >> 16) & 0x1F) | ((wInstr >> 6) & 0x3E0);
Mnemonic mnemonic;
switch (spr)
{
case 0x08: mnemonic = to ? Mnemonic.mtlr : Mnemonic.mflr; break;
case 0x09: mnemonic = to ? Mnemonic.mtctr : Mnemonic.mfctr; break;
default:
mnemonic = to ? Mnemonic.mtspr : Mnemonic.mfspr;
ops.Insert(0, ImmediateOperand.UInt32(spr));
break;
}
return(new PowerPcInstruction(mnemonic)
{
InstructionClass = InstrClass.Linear,
Operands = ops.ToArray()
});
}
public override PowerPcInstruction Decode(uint wInstr, PowerPcDisassembler dasm)
{
var reg = dasm.RegFromBits(wInstr >> 21);
var spr = (wInstr >> 11) & 0x3FF;
return(new PowerPcInstruction(mnemonic)
{
InstructionClass = base.iclass,
Operands = new MachineOperand[] {
reg,
new ImmediateOperand(Constant.Word16((ushort)spr))
}
});
}