ex86asm.h

一个面向对像语言的编译器

// Ex86asm.h: interface for the Ex86asm class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_EX86ASM_H__C704C173_50C6_4975_ADB1_F4AC56011F2C__INCLUDED_)
#define AFX_EX86ASM_H__C704C173_50C6_4975_ADB1_F4AC56011F2C__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "tac.h"
#include "taclist.h"
class Declaration;

class Ex86asm  
{
private: 
	void StoreVarInEAX(Declaration * decl);
	void StoreEAXInVar(Declaration * decl);
	void StoreVarInEDX(Declaration * decl);
	void StoreEDXInVar(Declaration * decl);
	int nStringCount;

public:
	void EmitGVar(Declaration *decl);
	void EmitPreamble();
	
	Ex86asm();
	virtual ~Ex86asm();

    static void Emit(const char *fmt, ...);
    static void EmitOp2(const char *op, const char *dst,const char * src,const char * comment=NULL,const char * comment2=NULL )
	{
		if(comment2!=NULL)
			Emit("%-6s %-9s , %-9s \t ;%s (%s)",op,dst,src,comment,comment2);
		else if (comment!=NULL)
			Emit("%-6s %-9s , %-9s \t ;%s",op,dst,src,comment);
		else
			Emit("%-6s %-9s , %-9s",op,dst,src);

		
	}
	static void EmitOp1(const char *op, const char *dst,const char * comment=NULL,const char * comment2=NULL )
	{
		if(comment2!=NULL)
			Emit("%-6s %-9s %11s \t ;%s (%s)",op,dst,"",comment,comment2);
		else if (comment!=NULL)
			Emit("%-6s %-9s %11s \t ;%s",op,dst,"",comment);
		else
			Emit("%-6s %-9s",op,dst);
			
	}
	static void EmitOp0(const char *op, const char * comment=NULL,const char * comment2=NULL )
	{
		if(comment2!=NULL)
			Emit("%-6s %21s \t ;%s (%s)",op,"",comment,comment2);
		else if(comment!=NULL)
			Emit("%-6s %21s \t ;%s",op,"",comment);
		else 
			Emit("%-6s",op);
	}


    void EmitLoadConstant(Declaration *dst, int val);
    void EmitLoadStringConstant(Declaration *dst, const char *str);
    void EmitLoadLabel(Declaration *dst, const char *label);

    void EmitLoad(Declaration *dst, Declaration *reference, int offset);
    void EmitStore(Declaration *reference, Declaration *value, int offset);
    void EmitCopy(Declaration *dst, Declaration *src);
    
    void EmitBinaryOp(Tac::OpCode code, Declaration *dst, 
			    Declaration *op1, Declaration *op2);

    void EmitLabel(const char *label);
    void EmitGoto(const char *label);
    void EmitIfZ(Declaration *test, const char*label);
    void EmitReturn(Declaration *returnVal);
    
    void EmitBeginFunction(Declaration * fun,int frameSize);
    void EmitEndFunction(Declaration * fun);

    void EmitArg(Declaration *arg);
    void EmitLCall(Declaration *result, const char* label, int bytes);
    void EmitACall(Declaration *result, Declaration *fnAddr, int bytes);
    
    void EmitVTable(const char *label, DeclList *methods);


};

#endif // !defined(AFX_EX86ASM_H__C704C173_50C6_4975_ADB1_F4AC56011F2C__INCLUDED_)