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/**
* @module cinstruction
* @author Guenther Neuwirth (0626638), Manuel Mausz (0728348)
* @brief abstract class cpu instructions
* @date 17.04.2009
*/
#ifndef CINSTRUCTION_H
#define CINSTRUCTION_H
#include <map>
#include <vector>
#include "cmem.h"
/**
* @class CInstruction
*
* Parses a simple line based scriptfile with some limitations:
* first function (starting a block) must be a read-command,
* last must be a write-command (ending this block).
*
* read- and write-commands have hard coded parameters, number#1 being a filetype.
* Classes handling certain filetypes must be of type CFile.
* Custom functions will be passed to CFile::callFunc().
*
* On error ParserError will be thrown.
*/
class CInstruction
{
public:
CInstruction()
{}
CInstruction(std::map<std::string, unsigned int>& jumpaddr)
: m_jumpaddr(jumpaddr)
{}
/**
* @method ~CInstruction
* @brief Default dtor
* @param -
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
virtual ~CInstruction()
{}
virtual void exec(CMem& mem, std::vector<std::string>& instr) = 0;
protected:
std::map<std::string, unsigned int> m_jumpaddr;
};
class CFlagInstruction : public CInstruction
{
public:
public:
CFlagInstruction(bool& zero, bool& sign)
: f_zero(zero), f_sign(sign)
{}
CFlagInstruction(bool& zero, bool& sign, std::map<std::string, unsigned int>& jumpaddr)
: CInstruction::CInstruction(jumpaddr), f_zero(zero), f_sign(sign)
{}
virtual void exec(CMem& mem, std::vector<std::string>& instr) = 0;
protected:
bool &f_zero, &f_sign;
};
class CInc : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CDec : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CAdd : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CSub : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CMul : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CDiv : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CLoad : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CStore : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CTest : public CFlagInstruction
{
public:
CTest(bool& zero, bool& sign)
: CFlagInstruction::CFlagInstruction(zero, sign)
{}
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CLabel : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr)
{}
};
class CJumpa : public CInstruction
{
public:
CJumpa(std::map<std::string, unsigned int>& jumpaddr)
: CInstruction::CInstruction(jumpaddr)
{}
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CJumpz : public CFlagInstruction
{
public:
CJumpz(bool& zero, bool& sign, std::map<std::string, unsigned int>& jumpaddr)
: CFlagInstruction::CFlagInstruction(zero, sign, jumpaddr)
{}
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CJumps : public CFlagInstruction
{
public:
CJumps(bool& zero ,bool& sign, std::map<std::string, unsigned int>& jumpaddr)
: CFlagInstruction::CFlagInstruction(zero, sign, jumpaddr)
{}
void exec(CMem& mem, std::vector<std::string>& instr);
};
class CWrite : public CInstruction
{
public:
void exec(CMem& mem, std::vector<std::string>& instr);
};
#endif
/* vim: set et sw=2 ts=2: */
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