bool RARSetLastInstrOperands(RARProgram *prog, uint8_t addressingmode1, uint32_t value1, uint8_t addressingmode2, uint32_t value2)
{
RAROpcode *opcode = &prog->opcodes[prog->length - 1];
int numoperands;
if (addressingmode1 >= RARNumberOfAddressingModes || addressingmode2 >= RARNumberOfAddressingModes)
return false;
if (!prog->length || opcode->addressingmode1 || opcode->value1 || opcode->addressingmode2 || opcode->value2)
return false;
numoperands = NumberOfRARInstructionOperands(opcode->instruction);
if (numoperands == 0)
return true;
if (addressingmode1 == RARImmediateAddressingMode && RARInstructionWritesFirstOperand(opcode->instruction))
return false;
opcode->addressingmode1 = addressingmode1;
opcode->value1 = value1;
if (numoperands == 2) {
if (addressingmode2 == RARImmediateAddressingMode && RARInstructionWritesSecondOperand(opcode->instruction))
return false;
opcode->addressingmode2 = addressingmode2;
opcode->value2 = value2;
}
return true;
}
bool PrepareRAROpcodes(RAROpcode *opcodes,int numopcodes)
{
void **instructionlabels_32,**instructionlabels_8;
RunVirtualMachineOrGetLabels(NULL,NULL,0,&instructionlabels_32);
instructionlabels_8=&instructionlabels_32[RARNumberOfInstructions];
for(int i=0;i<numopcodes;i++)
{
if(opcodes[i].instruction>=RARNumberOfInstructions) return false;
void **instructionlabels;
RARSetterFunction *setterfunctions;
RARGetterFunction *getterfunctions;
if(opcodes[i].instruction==RARMovsxInstruction||opcodes[i].instruction==RARMovzxInstruction)
{
instructionlabels=instructionlabels_32;
getterfunctions=OperandGetters_8;
setterfunctions=OperandSetters_32;
}
else if(opcodes[i].bytemode)
{
if(!RARInstructionHasByteMode(opcodes[i].instruction)) return false;
instructionlabels=instructionlabels_8;
getterfunctions=OperandGetters_8;
setterfunctions=OperandSetters_8;
}
else
{
instructionlabels=instructionlabels_32;
getterfunctions=OperandGetters_32;
setterfunctions=OperandSetters_32;
}
opcodes[i].instructionlabel=instructionlabels[opcodes[i].instruction];
int numoperands=NumberOfRARInstructionOperands(opcodes[i].instruction);
if(numoperands>=1)
{
if(opcodes[i].addressingmode1>=RARNumberOfAddressingModes) return false;
opcodes[i].operand1getter=getterfunctions[opcodes[i].addressingmode1];
opcodes[i].operand1setter=setterfunctions[opcodes[i].addressingmode1];
if(opcodes[i].addressingmode1==RARImmediateAddressingMode)
{
if(RARInstructionWritesFirstOperand(opcodes[i].instruction)) return false;
}
else if(opcodes[i].addressingmode1==RARAbsoluteAddressingMode)
{
opcodes[i].value1&=RARProgramMemoryMask;
}
}
if(numoperands==2)
{
if(opcodes[i].addressingmode2>=RARNumberOfAddressingModes) return false;
opcodes[i].operand2getter=getterfunctions[opcodes[i].addressingmode2];
opcodes[i].operand2setter=setterfunctions[opcodes[i].addressingmode2];
if(opcodes[i].addressingmode2==RARImmediateAddressingMode)
{
if(RARInstructionWritesSecondOperand(opcodes[i].instruction)) return false;
}
else if(opcodes[i].addressingmode2==RARAbsoluteAddressingMode)
{
opcodes[i].value2&=RARProgramMemoryMask;
}
}
}
return true;
}