addrspace.h

来自「操作系统课程设计。在UNIX平台下实现Solary操作系统的一些功能」· C头文件 代码 · 共 40 行

/////////////////////////////////////////////////////////////
//FileName		: addrspace.h
//
//Creator		: Li Shouchao(0410716)
//CreateTime	: 2007-1-3
//
//File Desc:
//	1.Data structures to keep track of executing user programs 
//		(address spaces).
/////////////////////////////////////////////////////////////
#ifndef ADDRSPACE_H
#define ADDRSPACE_H

#include "copyright.h"
#include "filesys.h"

#define UserStackSize		1024 	// increase this as necessary!

class AddrSpace {
  public:
    AddrSpace(OpenFile *executable);	// Create an address space,
					// initializing it with the program
					// stored in the file "executable"
    ~AddrSpace();			// De-allocate an address space

    void InitRegisters();		// Initialize user-level CPU registers,
					// before jumping to user code

    void SaveState();			// Save/restore address space-specific
    void RestoreState();		// info on a context switch 

    TranslationEntry *pageTable;	// Assume linear page table translation
					// for now!
    unsigned int numPages;		// Number of pages in the virtual 
					// address space
	int s_reg[NumTotalRegs];
};

#endif // ADDRSPACE_H