WinCE 下进程可访问的代码页的地址获取
此功能是在看 TCPMP 代码时发现的，感觉以后的工作中可能用到此部分功能，所以记录下来。
1 #include "windef.h" 2 #include "windows.h" 3 /* 4 * 功能: 进程可访问的代码页 5 * 参数: pPtr(in) 进程中一函数的指针 6 ppucMin,ppucMax(out) 输出进程可访问地址的最小/最大值 7 puiPageSize(in/out) 页面大小设置与输出 8 */ 9 void CodeAddrFindPages(void *pPtr,unsigned char **ppucMin,unsigned char **ppucMax,unsigned int *puiPageSize) 10 { 11 unsigned char *pucMin = NULL; 12 unsigned char *pucMax = NULL; 13 unsigned int uiPageSize = 14 #if defined(MIPS) 15 1024; 16 #else 17 4096; 18 #endif 19 if(puiPageSize) 20 *puiPageSize = uiPageSize; 21 22 pucMin = pucMax = (unsigned char *)((unsigned int)pPtr & (~(uiPageSize - 1))); // ~ 的优先级高于位操作符 & 23 // Leo: IsBadCodePtr - Determines whether the calling process has read access to the memory at the specified address. 24 while(!IsBadCodePtr((FARPROC)(pucMin - uiPageSize))) 25 pucMin -= uiPageSize; 26 while(!IsBadCodePtr((FARPROC)pucMax)) 27 pucMax += uiPageSize; 28 29 *ppucMin = pucMin; 30 *ppucMax = pucMax; 31 #ifdef _USE_WINDOWS_CE_PLATFORM 32 RETAILMSG(1,(L"[CodeAddr]min = 0x%X; max = 0x%X\r\n",pucMin,pucMax)); 33 #else 34 printf("[CodeAddr]min = 0x%X; max = 0x%X\r\n",pucMin,pucMax); 35 #endif 36 }
运行结果：
[CodeAddr]min = 0x11000; max = 0x195000
