public static InstructionFlowBehavior GenerateOutgoingCall(ProgramLine programLine, IDictionary<string, NumberExpression> programVariables)
{
if (programLine.Type == ProgramLineType.OpCodeInstruction)
{
// Analyse instruction effect on the program flow
InstructionFlowBehavior instructionFlowBehavior = ProgramFlowAnalyzer.GetInstructionFlowBehavior(programLine.InstructionCode.InstructionType);
// - check if the program flow continues to the next line
programLine.ContinueToNextLine = (instructionFlowBehavior & InstructionFlowBehavior.ContinueToNextInstruction) > 0;
// - check if the current program line can jump elswhere (either always or depending on a condition)
if ((instructionFlowBehavior & InstructionFlowBehavior.JumpToKnownLocation) > 0)
{
// Register the outgoing call address in the program line
CallSourceType callInstructionType;
InstructionLineParam targetAddressParameter;
AddressingMode targetAddressParameterType;
switch (programLine.InstructionType.Index)
{
// -- Call and jump instructions --
// Instruction_18_CALL_Address PC => stack, PC = Param1 (ODh|ODl)
case 18:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_19_CALL_FlagCondition_Address (PC += instruction size) OR (PC => stack, PC = Param2 (ODh|ODl))
case 19:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_36_DJNZ_RelativeDisplacement (PC += instruction size) OR (PC += Param1 (OD))
case 36:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_54_JP_Address PC = Param1 (ODh|ODl)
case 54:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_56_JP_FlagCondition_Address (PC += instruction size) OR (PC = Param2 (ODh|ODl))
case 56:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_57_JR_RelativeDisplacement PC += Param1 (OD)
case 57:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_58_JR_FlagCondition_RelativeDisplacement (PC += instruction size) OR (PC += Param2 (OD))
case 58:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_122_RST_ResetAddress PC => stack, PC = (AddressModifiedPageZero)Param1
case 122:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
default:
throw new NotImplementedException("Unexpected instruction type " + programLine.InstructionType.Index);
}
// Compute target address
int targetAddress;
if (targetAddressParameterType == AddressingMode.Relative && !(targetAddressParameter.NumberExpression is SymbolOperand))
{
targetAddress = programLine.LineAddress + targetAddressParameter.NumberExpression.GetValue(programVariables, programLine) /* + 2 not necessary because the assembler already adjusts when parsing the expression */;
}
else
{
targetAddress = targetAddressParameter.NumberExpression.GetValue(programVariables, programLine);
}
// Register call source and call target
CallSource callSource = new CallSource(callInstructionType, programLine.LineAddress, programLine);
CallTarget callTarget = new CallTarget(callSource, targetAddress);
programLine.OutgoingCall = callTarget;
}
return instructionFlowBehavior;
}
else
{
return 0;
}
}
public static InstructionFlowBehavior GenerateOutgoingCall(ProgramLine programLine, IDictionary <string, NumberExpression> programVariables)
{
if (programLine.Type == ProgramLineType.OpCodeInstruction)
{
// Analyse instruction effect on the program flow
InstructionFlowBehavior instructionFlowBehavior = ProgramFlowAnalyzer.GetInstructionFlowBehavior(programLine.InstructionCode.InstructionType);
// - check if the program flow continues to the next line
programLine.ContinueToNextLine = (instructionFlowBehavior & InstructionFlowBehavior.ContinueToNextInstruction) > 0;
// - check if the current program line can jump elswhere (either always or depending on a condition)
if ((instructionFlowBehavior & InstructionFlowBehavior.JumpToKnownLocation) > 0)
{
// Register the outgoing call address in the program line
CallSourceType callInstructionType;
InstructionLineParam targetAddressParameter;
AddressingMode targetAddressParameterType;
switch (programLine.InstructionType.Index)
{
// -- Call and jump instructions --
// Instruction_18_CALL_Address PC => stack, PC = Param1 (ODh|ODl)
case 18:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_19_CALL_FlagCondition_Address (PC += instruction size) OR (PC => stack, PC = Param2 (ODh|ODl))
case 19:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_36_DJNZ_RelativeDisplacement (PC += instruction size) OR (PC += Param1 (OD))
case 36:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_54_JP_Address PC = Param1 (ODh|ODl)
case 54:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_56_JP_FlagCondition_Address (PC += instruction size) OR (PC = Param2 (ODh|ODl))
case 56:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_57_JR_RelativeDisplacement PC += Param1 (OD)
case 57:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
// Instruction_58_JR_FlagCondition_RelativeDisplacement (PC += instruction size) OR (PC += Param2 (OD))
case 58:
callInstructionType = CallSourceType.JumpInstruction;
targetAddressParameter = programLine.OpCodeParameters[1];
targetAddressParameterType = programLine.InstructionType.Param2Type.Value;
break;
// Instruction_122_RST_ResetAddress PC => stack, PC = (AddressModifiedPageZero)Param1
case 122:
callInstructionType = CallSourceType.CallInstruction;
targetAddressParameter = programLine.OpCodeParameters[0];
targetAddressParameterType = programLine.InstructionType.Param1Type.Value;
break;
default:
throw new NotImplementedException("Unexpected instruction type " + programLine.InstructionType.Index);
}
// Compute target address
int targetAddress;
if (targetAddressParameterType == AddressingMode.Relative && !(targetAddressParameter.NumberExpression is SymbolOperand))
{
targetAddress = programLine.LineAddress + targetAddressParameter.NumberExpression.GetValue(programVariables, programLine) /* + 2 not necessary because the assembler already adjusts when parsing the expression */;
}
else
{
targetAddress = targetAddressParameter.NumberExpression.GetValue(programVariables, programLine);
}
// Register call source and call target
CallSource callSource = new CallSource(callInstructionType, programLine.LineAddress, programLine);
CallTarget callTarget = new CallTarget(callSource, targetAddress);
programLine.OutgoingCall = callTarget;
}
return(instructionFlowBehavior);
}
else
{
return(0);
}
}
public CallTarget(CallSource source, int targetAddress)
{
Source = source;
Address = targetAddress;
}
public CallTarget(CallSource source, int targetAddress)
{
Source = source;
Address = targetAddress;
}