intel Pin中的全局变量

时间:2016-10-11 20:01:35

标签: c++ global-variables global intel intel-pin

我的pintool中有这个全局变量,我希望将其内容放在Instruction(我的仪器功能)中。

UINT32 windowCnt=0;

LOCALFUN VOID Instruction(INS ins, VOID *v)
{

    const AFUNPTR InsRefFun = ((wcount % 2)==0 ? (AFUNPTR) InsRef_Skip : (AFUNPTR) InsRef);



    INS_InsertIfCall(
       ins, IPOINT_BEFORE, (AFUNPTR)InsRefFun,
       IARG_THREAD_ID,
       IARG_INST_PTR,
       IARG_END);
  ...
}

我该怎么做?我已经尝试了GLOBALVAR,LOCALVAR,const和static,但没有给我任何正确的值。

1 个答案:

答案 0 :(得分:0)

静态全局变量(在文件范围内)应该起作用:

static UINT32 foo = 0;

否则,您可以使用INS_AddInstrumentFunction的第二个参数:

int main(int argc, char * argv[])
{
    // Initialize pin
    if (PIN_Init(argc, argv)) return Usage();

    UINT32 foo = 0;

    // Register Instruction to be called to instrument instructions
    INS_AddInstrumentFunction(Instruction, &foo);

    // Register Fini to be called when the application exits
    PIN_AddFiniFunction(Fini, 0);

    // Start the program, never returns
    PIN_StartProgram();

    return 0;
}

在你的仪器功能中,还有:

// Pin calls this function every time a new instruction is encountered
VOID Instruction(INS ins, VOID *v)
{
    if(v == NULL)
        return;

    UINT32 myfoo = *((UINT32*)v); //in c++: myFoo = *reinterptet_cast<UINT32*>(v)

    // Insert a call to doSomething before every instruction, no arguments are passed
    INS_InsertCall(ins, IPOINT_BEFORE, (AFUNPTR)doSomething, IARG_END);
}