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175 lines
4.4 KiB
175 lines
4.4 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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/*! @file
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* Among other things this test checks:
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* - Verify that all image load callbacks and all thread attach callbacks are being called before starting to Probe.
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*/
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#include "pin.H"
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#include <iostream>
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#include <fstream>
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#include <stdlib.h>
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#include <sched.h>
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#include <assert.h>
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#if defined(TARGET_LINUX)
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#include <elf.h>
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#endif
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#include "tool_macros.h"
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using std::ofstream;
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using std::string;
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using std::ios;
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using std::hex;
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using std::cerr;
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using std::dec;
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using std::endl;
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/* ===================================================================== */
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/* Commandline Switches */
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/* ===================================================================== */
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KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool",
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"o", "probe_tool.out", "specify file name");
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#ifdef TARGET_LINUX
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KNOB<BOOL> KnobJustQueryAuxv(KNOB_MODE_WRITEONCE, "pintool",
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"just_auxv", "0", "just test availability of auxv values");
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#endif
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ofstream TraceFile;
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/* ===================================================================== */
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INT32 Usage()
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{
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cerr <<
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"This pin tool tests MT attach in probe mode.\n"
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"\n";
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cerr << KNOB_BASE::StringKnobSummary();
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cerr << endl;
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return -1;
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}
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PIN_LOCK pinLock;
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UINT32 threadCounter=0;
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BOOL isAppStartReceived = FALSE;
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volatile BOOL probeBegan = FALSE; // True if probing has started
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#ifdef TARGET_LINUX
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void QueryAuxv(const char* name, ADDRINT value)
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{
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bool found = false;
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ADDRINT vdso = PIN_GetAuxVectorValue(value, &found);
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if (found)
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{
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TraceFile << name << " value: " << vdso << endl;
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}
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else
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{
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TraceFile << "Could not find auxv value " << name << endl;
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}
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}
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#endif
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VOID AppStart(VOID *v)
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{
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PIN_GetLock(&pinLock, PIN_GetTid());
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TraceFile << "Application Start Callback is called from thread " << dec << PIN_GetTid() << endl;
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isAppStartReceived = TRUE;
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PIN_ReleaseLock(&pinLock);
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}
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VOID AttachedThreadStart(VOID *sigmask, VOID *v)
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{
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ASSERT(!probeBegan, "Probe began before all thread attach callbacks were called");
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PIN_GetLock(&pinLock, PIN_GetTid());
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TraceFile << "Thread counter is updated to " << dec << (threadCounter+1) << endl;
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++threadCounter;
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PIN_ReleaseLock(&pinLock);
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}
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int PinReady(unsigned int numOfThreads)
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{
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probeBegan = TRUE;
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PIN_GetLock(&pinLock, PIN_GetTid());
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// Check that we don't have any extra thread
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assert(threadCounter <= numOfThreads);
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if ((threadCounter == numOfThreads) && isAppStartReceived)
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{
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TraceFile.close();
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PIN_ReleaseLock(&pinLock);
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return 1;
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}
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PIN_ReleaseLock(&pinLock);
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return 0;
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}
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VOID ImageLoad(IMG img, void *v)
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{
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ASSERT(!probeBegan, "Probe began before all image load callbacks were called");
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RTN rtn = RTN_FindByName(img, C_MANGLE("ThreadsReady"));
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if (RTN_Valid(rtn))
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{
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RTN_ReplaceProbed(rtn, AFUNPTR(PinReady));
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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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if( PIN_Init(argc,argv) )
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{
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return Usage();
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}
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#if defined(TARGET_LINUX) && defined(TARGET_IA32)
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int gs_reg_value = 0;
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asm("mov $0, %%eax\n"
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"mov %%gs, %%eax\n"
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"mov %%eax, %0\n"
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: "=r" (gs_reg_value));
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ASSERTX(0 != gs_reg_value);
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#endif
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TraceFile.open(KnobOutputFile.Value().c_str());
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TraceFile << hex;
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TraceFile.setf(ios::showbase);
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#ifdef TARGET_LINUX
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if (KnobJustQueryAuxv) {
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QueryAuxv("AT_ENTRY", AT_ENTRY);
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QueryAuxv("UNDEFINED_ENTRY", 0xFFFFFFF);
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TraceFile.close();
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PIN_ExitProcess(0);
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}
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#endif
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PIN_InitLock(&pinLock);
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IMG_AddInstrumentFunction(ImageLoad, 0);
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PIN_AddApplicationStartFunction(AppStart, 0);
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PIN_AddThreadAttachProbedFunction(AttachedThreadStart, 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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