private ushort bitSet; // MoveM
public OperandFormatDecoder(M68kDisassembler dasm, int i)
{
this.dasm = dasm;
this.opcode = dasm.instruction;
this.i = i;
}
private void BuildTest(Action<M68kAssembler> builder)
{
builder(asm);
dasm = M68kDisassembler.Create68020(asm.GetImage().Image.CreateBeReader(asm.BaseAddress));
}
private void BuildTest(Action<M68kAssembler> builder)
{
builder(asm);
dasm = M68kDisassembler.Create68020(
asm.GetImage().SegmentMap.Segments.Values.First().MemoryArea.CreateBeReader(asm.BaseAddress));
}
private static bool EXT_INDEX_LONG(uint A)
{
return(M68kDisassembler.BIT_B(A));
}
private static bool EXT_INDEX_AR(uint A)
{
return(M68kDisassembler.BIT_F(A));
}
internal static bool EXT_FULL(uint A)
{
return(M68kDisassembler.BIT_8(A));
}
private static bool EXT_INDEX_REGISTER_PRESENT(uint A)
{
return(!(M68kDisassembler.BIT_6(A)));
}
private ushort bitSet; // MoveM
public OperandFormatDecoder(M68kDisassembler dasm, int i)
{
this.dasm = dasm;
this.opcode = dasm.uInstr;
this.i = i;
}
private bool TryAddressRegisterIndirectWithIndex(PrimitiveType dataWidth, EndianImageReader rdr, out MachineOperand op)
{
if (!rdr.TryReadBeUInt16(out ushort extension))
{
op = null; return(false);
}
if (EXT_FULL(extension))
{
if (M68kDisassembler.EXT_EFFECTIVE_ZERO(extension))
{
op = new M68kAddressOperand(Address.Ptr32(0));
return(true);
}
RegisterStorage base_reg = null;
RegisterStorage index_reg = null;
PrimitiveType index_reg_width = null;
int index_scale = 1;
Constant @base = null;
if (EXT_BASE_DISPLACEMENT_PRESENT(extension))
{
@base = rdr.ReadBe(EXT_BASE_DISPLACEMENT_LONG(extension) ? PrimitiveType.Word32 : PrimitiveType.Int16);
}
Constant outer = null;
if (EXT_OUTER_DISPLACEMENT_PRESENT(extension))
{
outer = rdr.ReadBe(EXT_OUTER_DISPLACEMENT_LONG(extension) ? PrimitiveType.Word32 : PrimitiveType.Int16);
}
if (EXT_BASE_REGISTER_PRESENT(extension))
{
base_reg = Registers.AddressRegister(opcode & 7);
}
if (EXT_INDEX_REGISTER_PRESENT(extension))
{
index_reg = EXT_INDEX_AR(extension)
? Registers.AddressRegister((int)EXT_INDEX_REGISTER(extension))
: Registers.DataRegister((int)EXT_INDEX_REGISTER(extension));
index_reg_width = EXT_INDEX_LONG(extension) ? PrimitiveType.Word32 : PrimitiveType.Word16;
if (EXT_INDEX_SCALE(extension) != 0)
{
index_scale = 1 << EXT_INDEX_SCALE(extension);
}
}
bool preindex = (extension & 7) > 0 && (extension & 7) < 4;
bool postindex = (extension & 7) > 4;
op = new IndexedOperand(dataWidth, @base, outer, base_reg, index_reg, index_reg_width, index_scale, preindex, postindex);
}
else
{
op = new IndirectIndexedOperand(
dataWidth,
EXT_8BIT_DISPLACEMENT(extension),
Registers.AddressRegister(opcode & 7),
EXT_INDEX_AR(extension)
? Registers.AddressRegister((int)EXT_INDEX_REGISTER(extension))
: Registers.DataRegister((int)EXT_INDEX_REGISTER(extension)),
EXT_INDEX_LONG(extension) ? PrimitiveType.Word32 : PrimitiveType.Int16,
1 << EXT_INDEX_SCALE(extension));
}
return(true);
}
public IEnumerable <M68kInstruction> CreateDisassemblerImpl(ImageReader rdr)
{
return(M68kDisassembler.Create68020(rdr));
}
public override IEnumerable <MachineInstruction> CreateDisassembler(ImageReader rdr)
{
return(M68kDisassembler.Create68020(rdr));
}
public OperandFormatDecoder(M68kDisassembler dasm, int i)
{
this.dasm = dasm;
}
private void BuildTest(Action <M68kAssembler> builder)
{
builder(asm);
dasm = M68kDisassembler.Create68020(asm.GetImage().Image.CreateBeReader(asm.BaseAddress));
}
private void BuildTest(Action <M68kAssembler> builder)
{
builder(asm);
dasm = M68kDisassembler.Create68020(
asm.GetImage().SegmentMap.Segments.Values.First().MemoryArea.CreateBeReader(asm.BaseAddress));
}
