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Compilers.c
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Compilers.c
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#include "Compilers.h"
#include<stdio.h>
#include"Constant.h"
#include<string.h>
#include"Memory.h"
#include"Labels.h"
#include"Save.h"
#include"HelperStructs.h"
void UpdateSignOfLastOperation(int value)
{
CompilerMemory.Zero = value == 0 ? True : False;
CompilerMemory.Negative = value < 0 ? True : False;
CompilerMemory.Positive = value > 0 ? True : False;
}
void PerformCommand(Command* command)
{
int number;
switch (command->Code)
{
case AR:
CompilerMemory.Registers[command->FirstRegister] += CompilerMemory.Registers[command->SecondRegister];
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case A:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
CompilerMemory.Registers[command->FirstRegister] += GetCellValue(number);
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case SR:
CompilerMemory.Registers[command->FirstRegister] -= CompilerMemory.Registers[command->SecondRegister];
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case S:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
CompilerMemory.Registers[command->FirstRegister] -= GetCellValue(number);
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case MR:
CompilerMemory.Registers[command->FirstRegister] *= CompilerMemory.Registers[command->SecondRegister];
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case M:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
CompilerMemory.Registers[command->FirstRegister] *= GetCellValue(number);
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case DR:
CompilerMemory.Registers[command->FirstRegister] /= CompilerMemory.Registers[command->SecondRegister];
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case D:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
CompilerMemory.Registers[command->FirstRegister] /= GetCellValue(number);
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]);
break;
case CR:
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister] - CompilerMemory.Registers[command->SecondRegister]);
break;
case C:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
UpdateSignOfLastOperation(CompilerMemory.Registers[command->FirstRegister]-GetCellValue(number));
break;
case J:
number = command->TargetDisplacement + CompilerMemory.Registers[command->TargetRegister];
CompilerMemory.ProgramCounter = GetCommandNumberByDisplacement(number);
break;
case JZ:
number = command->TargetDisplacement + CompilerMemory.Registers[command->TargetRegister] ;
if (CompilerMemory.Zero == True)
{
CompilerMemory.ProgramCounter = GetCommandNumberByDisplacement(number);
}
break;
case JP:
number = command->TargetDisplacement + CompilerMemory.Registers[command->TargetRegister] ;
if (CompilerMemory.Positive == True)
{
CompilerMemory.ProgramCounter = GetCommandNumberByDisplacement(number);
}
break;
case JN:
number = command->TargetDisplacement + CompilerMemory.Registers[command->TargetRegister] ;
if (CompilerMemory.Negative == True)
{
CompilerMemory.ProgramCounter = GetCommandNumberByDisplacement(number);
}
break;
case L:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
CompilerMemory.Registers[command->FirstRegister] = GetCellValue(number);
break;
case LR:
CompilerMemory.Registers[command->FirstRegister] = CompilerMemory.Registers[command->SecondRegister];
break;
case LA:
CompilerMemory.Registers[command->FirstRegister] = command->TargetDisplacement + CompilerMemory.Registers[command->TargetRegister];
break;
case ST:
number = command->TargetDisplacement / 4 + CompilerMemory.Registers[command->TargetRegister] / 4;
SetCellValue(number, CompilerMemory.Registers[command->FirstRegister]);
break;
case KILL:
CompilerMemory.ProgramCounter = CompilerMemory.CommandsInfo->Total;
break;
}
return True;
}
void ExecuteCommands()
{
Command* command = NULL;
while (CompilerMemory.ProgramCounter != CompilerMemory.CommandsInfo->Total)
{
command = GetCommand(CompilerMemory.ProgramCounter);
CompilerMemory.ProgramCounter++;
PerformCommand(command);
}
}
void CompilePsaCode(char* filename)
{
MakeLabels(filename);
LoadCommands(filename);
ExecuteCommands();
GenerateOutputFile(filename);
}
void CompileMachineCode(char* filename)
{
LoadHexCommands(filename);
ExecuteCommands();
GenerateOutputFile(filename);
}