public InstructionFunc UnregisterNarrow(uint basecode)
{
InstructionFunc f = registry[basecode];
registry[basecode] = defaultInstruction;
return(f);
}
private void RegisterNarrow(IEnumerable <uint> narrow_opcodes, InstructionFunc handler, string name = "")
{
foreach (uint i in narrow_opcodes)
{
RegisterNarrow(i, handler, name);
}
}
public void RegisterOpCode(IEnumerable <uint> opCodes, InstructionFunc handler, string name = "")
{
foreach (uint i in opCodes)
{
RegisterNarrow(Narrow(i), handler, name);
}
}
private void RegisterNarrow(uint basecode, InstructionFunc handler, string name = "")
{
if (registry[basecode] != defaultInstruction)
{
System.Diagnostics.Debug.Assert(registry[basecode] == defaultInstruction, "Attempting to register " + name + " into slot taken by " + registeredNames[basecode]);
}
registry[basecode] = handler;
registeredNames[basecode] = name;
}
protected InstructionRegistry(int width, InstructionFunc defaultInstruction)
{
registry = new InstructionFunc[1 << width];
registeredNames = new string[1 << width];
this.defaultInstruction = defaultInstruction;
for (int i = 0; i < registry.Length; i++)
{
registry[i] = defaultInstruction;
registeredNames[i] = "(none)";
}
}
//Register a range of opcodes to be handled by a specific handler.
//The basecode gives the first opcode in the range and mask contains the
//set of free bits in the range (whose value can be either 0 or 1). Note
//that basecode and mask should be relative to the narrowed range (i.e. the width
//of the registry), not actual opcodes)
private void RegisterNarrow(uint basecode, uint wildcard_mask, InstructionFunc handler, string name = "")
{
RegisterNarrow(BitStringWildcard(basecode, wildcard_mask), handler, name);
}
public void RegisterOpCode(uint opCode, InstructionFunc handler, string name = "")
{
RegisterNarrow(Narrow(opCode), handler, name);
}
public void RegisterOpCode(uint opCode, uint wildcard_mask, InstructionFunc handler, string name = "")
{
RegisterNarrow(Narrow(opCode), Narrow(wildcard_mask), handler, name);
}
internal void RegisterOpcode(uint opcode, uint wildcard_mask, InstructionFunc handler, string name)
{
ARMInstructionRegistry.RegisterOpCode(opcode, wildcard_mask, handler, name);
}
protected override void FinishBuild()
{
InstructionFunc handler = owner.GenerateAWCDataOp(EvaluateOperand2, opHandler, SaveResult, SetFlags);
Register(handler);
}
protected virtual void Register(InstructionFunc BuiltHandler)
{
owner.RegisterOpcode(opcode, wildcard_mask, BuiltHandler, name);
}
public InstructionData(byte opcode, string mnemonic, AddressingMode addressingMode, int cycles, InstructionType type, InstructionFunc implementation)
{
this.Opcode = opcode;
this.Mnemonic = mnemonic;
this.AddressingMode = addressingMode;
this.Cycles = cycles;
this.IsRead = (type & InstructionType.Read) == InstructionType.Read;
this.IsWrite = (type & InstructionType.Write) == InstructionType.Write;
this.IsUnofficial = (type & InstructionType.Unofficial) == InstructionType.Unofficial;
this.Implementation = implementation;
this.Size = InstructionData.SizeMap[addressingMode];
}
internal void FinishBuildingLoadStoreOp(LoadStoreBuilder b)
{
InstructionFunc handler = GenerateLoadStoreInstruction(b.ComputeOffset, b.ComputeOffsetAddress, b.ComputeFinalAddress, b.WritebackAddress, b.memorySize, b.LoadStoreMemory);
RegisterOpcode(b.opcode, b.wildcard_mask, handler, b.name);
}