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102 lines
2.9 KiB
102 lines
2.9 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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Replace an original function with a custom function defined in the tool.
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Its purpose is to check delivery of original SP value.
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*/
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/* ===================================================================== */
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#include "pin.H"
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/* ===================================================================== */
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// Replaces original function. Returns 0 if all SP values are valid.
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int check_sp_value( void* arg0,
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ADDRINT gsp, ADDRINT esp, ADDRINT sp )
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{
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ADDRINT orig_sp = (ADDRINT)arg0;
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if ((orig_sp == gsp) &&
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((unsigned int)orig_sp == esp) &&
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((unsigned short)orig_sp == sp))
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{
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return 0;
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}
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return 1;
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}
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/* ===================================================================== */
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VOID ImageLoad(IMG img, VOID *v)
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{
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if (!IMG_IsMainExecutable(img))
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{
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return;
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}
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const char * name = "check_sp_value";
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RTN rtn = RTN_FindByName(img, name);
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if (RTN_Valid(rtn))
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{
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PROTO proto = PROTO_Allocate(PIN_PARG(int),
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CALLINGSTD_DEFAULT, name,
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PIN_PARG(void*),
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PIN_PARG_END() );
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if ( ! PIN_IsProbeMode() )
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{
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RTN_ReplaceSignature(
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rtn, AFUNPTR(check_sp_value),
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IARG_PROTOTYPE, proto,
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IARG_FUNCARG_ENTRYPOINT_VALUE, 0,
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IARG_REG_VALUE, REG_STACK_PTR,
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IARG_REG_VALUE, REG_ESP,
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IARG_REG_VALUE, REG_SP,
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IARG_END);
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}
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else if (RTN_IsSafeForProbedReplacement(rtn))
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{
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RTN_ReplaceSignatureProbed(
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rtn, AFUNPTR(check_sp_value),
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IARG_PROTOTYPE, proto,
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IARG_FUNCARG_ENTRYPOINT_VALUE, 0,
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IARG_REG_VALUE, REG_STACK_PTR,
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IARG_REG_VALUE, REG_ESP,
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IARG_REG_VALUE, REG_SP,
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IARG_END);
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}
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PROTO_Free( proto);
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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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if ( PIN_IsProbeMode() )
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PIN_StartProgramProbed();
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else
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PIN_StartProgram();
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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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