C++获取寄存器eip的值

程序中需要打印当前代码段位置 如下

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#ifdef WIN32
#include <windows.h>
#endif
typedef void (*pFunGetip)(int n);
void getip(int n);
void __declspec(naked) fun()
{
__asm {
  mov eax,[esp];
  ret;
}
}
int main()
{
    printf("main=0x%p
",main);
    void* p=0;
    __asm {
        lea edi,p
        call fun
        mov [edi],eax
    }
    printf("p=0x%x
",p);
#ifdef WIN32
    system("pause");
#endif
    return 0;
}

 来个纯C++的函数

static unsigned char* getEIP()
{
  unsigned int n=0;
  unsigned int* p=&n;
  unsigned int* p2=(unsigned int*)getEIP;
  unsigned int m=(((unsigned int)p2)&0xfff00000);
  unsigned int m2=m+0xfffff;
  for(int i=0;i<0xff;++i)
  {
      if(m&p[i])
      {
          if(p[i]<m2)
          {
              return (unsigned char*)p[i];
          }
      }
  }
  return 0;
}