public DisplayInstructionBase(ushort word, ushort address, DisplayProcessorMode mode)
{
_usageMode = mode;
_word = word;
_address = address;
Decode();
}
public override string Disassemble(DisplayProcessorMode mode, Memory mem, out int length)
{
if (mode == DisplayProcessorMode.Indeterminate)
{
mode = _usageMode;
}
switch (mode)
{
case DisplayProcessorMode.Increment:
length = 1;
return(DisassembleIncrement());
case DisplayProcessorMode.Processor:
return(DisassembleProcessor(mem, out length));
case DisplayProcessorMode.CompactAddressing:
length = 1;
return(DisassembleCompactAddressing());
case DisplayProcessorMode.Indeterminate:
length = 1;
return("Indeterminate");
default:
throw new InvalidOperationException(String.Format("{0} is not a supported disassembly mode for this processor.", mode));
}
}
private PDS4DisplayInstruction GetCachedInstruction(ushort address, DisplayProcessorMode mode)
{
if (_instructionCache[address & Memory.SizeMask] == null)
{
_instructionCache[address & Memory.SizeMask] = new PDS4DisplayInstruction(_mem.Fetch(address), mode);
}
return(_instructionCache[address & Memory.SizeMask]);
}
public DisplayInstruction(ushort word, DisplayProcessorMode mode)
{
_usageMode = mode;
_word = word;
if (mode == DisplayProcessorMode.Processor)
{
Decode();
}
else
{
DecodeImmediate();
}
}
public override string Disassemble(ushort address, DisplayProcessorMode mode)
{
//
// Return a precached instruction if we have it due to previous execution
// otherwise disassemble it now in the requested mode; this disassembly
// does not get added to the cache.
//
if (_instructionCache[address & Memory.SizeMask] != null)
{
return(_instructionCache[address & Memory.SizeMask].Disassemble(mode));
}
else
{
return(new PDS4DisplayInstruction((ushort)(address & Memory.SizeMask), mode).Disassemble(mode));
}
}
public override string Disassemble(DisplayProcessorMode mode)
{
if (mode == DisplayProcessorMode.Indeterminate)
{
mode = _usageMode;
}
switch (mode)
{
case DisplayProcessorMode.Increment:
return(DisassembleIncrement());
case DisplayProcessorMode.Processor:
return(DisassembleProcessor());
case DisplayProcessorMode.Indeterminate:
return("Indeterminate");
default:
throw new InvalidOperationException(String.Format("{0} is not a supported disassembly mode for this processor.", mode));
}
}
public string Disassemble(DisplayProcessorMode mode)
{
if (mode == DisplayProcessorMode.Indeterminate)
{
mode = _usageMode;
}
switch (mode)
{
case DisplayProcessorMode.Increment:
return(DisassembleIncrement());
case DisplayProcessorMode.Processor:
return(DisassembleProcessor());
case DisplayProcessorMode.Indeterminate:
return("Indeterminate");
default:
throw new InvalidOperationException();
}
}
public PDS4DisplayInstruction(ushort word, DisplayProcessorMode mode) : base(word, mode)
{
}
/// <summary> /// Implementors provide a disassembly string representing this instruction. /// </summary> /// <param name="mode"></param> /// <returns></returns> public abstract string Disassemble(DisplayProcessorMode mode, Memory mem, out int length);
public abstract string Disassemble(ushort address, DisplayProcessorMode mode, out int length);
/// <summary> /// Implementors provide a disassembly string representing this instruction. /// </summary> /// <param name="mode"></param> /// <returns></returns> public abstract string Disassemble(DisplayProcessorMode mode);
public abstract string Disassemble(ushort address, DisplayProcessorMode mode);
public PDS1DisplayInstruction(ushort word, ushort address, DisplayProcessorMode mode) : base(word, address, mode)
{
}
