bool RARProgramAddInstr(RARProgram *prog, uint8_t instruction, bool bytemode)
{
if (instruction >= RARNumberOfInstructions)
return false;
if (bytemode && !RARInstructionHasByteMode(instruction))
return false;
if (prog->length + 1 >= prog->capacity) {
/* in my small file sample, 16 is the value needed most often */
uint32_t newCapacity = prog->capacity ? prog->capacity * 4 : 32;
RAROpcode *newCodes = calloc(newCapacity, sizeof(*prog->opcodes));
if (!newCodes)
return false;
memcpy(newCodes, prog->opcodes, prog->capacity * sizeof(*prog->opcodes));
free(prog->opcodes);
prog->opcodes = newCodes;
prog->capacity = newCapacity;
}
memset(&prog->opcodes[prog->length], 0, sizeof(prog->opcodes[prog->length]));
prog->opcodes[prog->length].instruction = instruction;
if (instruction == RARMovzxInstruction || instruction == RARMovsxInstruction)
prog->opcodes[prog->length].bytemode = 2; /* second argument only */
else if (bytemode)
prog->opcodes[prog->length].bytemode = (1 | 2);
else
prog->opcodes[prog->length].bytemode = 0;
prog->length++;
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;
}
