/*
 * Copyright 2002-2019 Intel Corporation.
 * 
 * This software is provided to you as Sample Source Code as defined in the accompanying
 * End User License Agreement for the Intel(R) Software Development Products ("Agreement")
 * section 1.L.
 * 
 * This software and the related documents are provided as is, with no express or implied
 * warranties, other than those that are expressly stated in the License.
 */

#include <stdio.h>
#include <stdlib.h>
#include "pin.H"
#include <iostream>
unsigned int n = 0xdeadbeef;
unsigned int res = 0;

VOID ahal()
{ 
#if defined(PIN_GNU_COMPATIBLE)
    asm("mov %0,%%eax; mov %%ah,%%al; mov %%eax,%1" : "=m"(n) : "m"(res) : "eax");
#elif defined(PIN_MS_COMPATIBLE)
   __asm {
       mov eax, [n]
       mov al, ah
       mov [res], eax
  }
#endif	
}
    
VOID Check(INT32 code, VOID *v)
{
    if (res != 0xdeadbebe)
    {
        printf("n %x res %x\n",n,res);
        exit(1);
    }
}

VOID Instruction(INS ins, VOID *v)
{
    static bool first = true;
    if (first)
    {
        INS_InsertCall(ins, IPOINT_AFTER, (AFUNPTR)ahal, IARG_END);
        INS_InsertCall(ins, IPOINT_AFTER, (AFUNPTR)Check, IARG_END);
    }
    first = false;
}


int main(int argc, char * argv[])
{
    PIN_Init(argc, argv);

    INS_AddInstrumentFunction(Instruction, 0);
    
    // Never returns
    PIN_StartProgram();
    
    return 0;
}