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110 lines
2.7 KiB
110 lines
2.7 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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//
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// This tool replaces my_yield, and calls the original.
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// The function my_yield is written such that there is a syscall within
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// the probe
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//
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#include "pin.H"
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#include <iostream>
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#include <stdlib.h>
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using std::cerr;
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using std::endl;
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/* ===================================================================== */
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/* Global Variables */
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/* ===================================================================== */
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static int (*pf_yield)();
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static void (*pf_marker)();
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static int my_counter = 0;
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/* ===================================================================== */
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/* Replacement Functions */
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/* ===================================================================== */
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int YieldProbe()
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{
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my_counter++;
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return (pf_yield)();
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}
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void MarkerProbe()
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{
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if (my_counter != 100)
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{
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cerr << "Unexpected number of calls to yield" << endl;
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exit(1);
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}
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int res = (pf_yield)();
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if (res != 0)
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{
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cerr << "Unexpected number of calls to yield" << endl;
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exit(1);
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}
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cerr << "Test ended succesfully" << endl;
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exit(0);
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}
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/* ===================================================================== */
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// Called every time a new image is loaded
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// Look for routines that we want to probe
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VOID ImageLoad(IMG img, VOID *v)
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{
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RTN yieldRtn = RTN_FindByName(img, "my_yield");
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if (RTN_Valid(yieldRtn))
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{
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if ( RTN_IsSafeForProbedReplacement( yieldRtn ) )
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{
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pf_yield = (int (*)()) RTN_ReplaceProbed(yieldRtn, AFUNPTR(YieldProbe));
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cerr << "Inserted probe for my_yield:" << IMG_Name(img) << endl;
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}
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}
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RTN markerRtn = RTN_FindByName(img, "my_marker");
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if (RTN_Valid(markerRtn))
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{
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if ( RTN_IsSafeForProbedReplacement( markerRtn ) )
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{
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pf_marker = (void (*)()) RTN_ReplaceProbed(markerRtn, AFUNPTR(MarkerProbe));
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cerr << "Inserted probe for my_marker:" << IMG_Name(img) << endl;
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}
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}
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}
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/* ===================================================================== */
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int main(int argc, CHAR *argv[])
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{
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PIN_InitSymbols();
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PIN_Init(argc,argv);
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IMG_AddInstrumentFunction(ImageLoad, 0);
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PIN_StartProgramProbed();
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return 0;
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}
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/* ===================================================================== */
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/* eof */
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/* ===================================================================== */
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