public override RiscVInstruction Decode(RiscVDisassembler dasm, uint wInstr)
{
var slot = (int)((wInstr >> shift) & mask);
if (!subcodes.TryGetValue(slot, out Decoder decoder))
{
return(dasm.MakeInvalid());
}
return(decoder.Decode(dasm, wInstr));
}
public override RiscVInstruction Decode(RiscVDisassembler dasm, uint hInstr)
{
if (!dasm.rdr.TryReadUInt16(out ushort hiword))
{
return(dasm.MakeInvalid());
}
uint wInstr = (uint)hiword << 16;
wInstr |= hInstr;
var slot = (wInstr >> 2) & 0x1F;
return(w32decoders[slot].Decode(dasm, wInstr));
}
public override RiscVInstruction Decode(RiscVDisassembler dasm, uint wInstr)
{
dasm.state.instr.iclass = InstrClass.Linear;
dasm.state.instr.opcode = opcode;
dasm.state.ops.Clear();
foreach (var m in mutators)
{
if (!m(wInstr, dasm))
{
return(dasm.MakeInvalid());
}
}
return(dasm.MakeInstruction());
}