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src/interfaces/idapro/STARSInterface.cpp
View file @ 732a3a9b
...@@ -477,38 +477,46 @@ bool STARS_IDA_Interface_t::AuditEHFunctionBoundaries(void) { ...@@ -477,38 +477,46 @@ bool STARS_IDA_Interface_t::AuditEHFunctionBoundaries(void) {
// Use the FDEs (Frame Descriptor Entries) from the eh_frame section // Use the FDEs (Frame Descriptor Entries) from the eh_frame section
// to perform the same algorithm as above: an FDE should contain only one func. // to perform the same algorithm as above: an FDE should contain only one func.
const string ExeFileName = global_STARS_program->GetRootFileName(); const string ExeFileName = global_STARS_program->GetRootFileName();
auto EHParser = EHP::EHFrameParser_t::factory(ExeFileName); try
const auto FDEvecptr = EHParser->getFDEs(); {
for (const auto FDEveciter : *FDEvecptr) { auto EHParser = EHP::EHFrameParser_t::factory(ExeFileName);
uint64_t startAddr = FDEveciter->getStartAddress(); const auto FDEvecptr = EHParser->getFDEs();
uint64_t endAddr = FDEveciter->getEndAddress(); for (const auto FDEveciter : *FDEvecptr) {
uint64_t startAddr = FDEveciter->getStartAddress();
// See if start and end of FDE landing pad are in the same IDA Pro func. uint64_t endAddr = FDEveciter->getEndAddress();
STARS_ea_t CurrStartEA = (STARS_ea_t) startAddr;
STARS_ea_t CurrEndEA = (STARS_ea_t) endAddr; // See if start and end of FDE landing pad are in the same IDA Pro func.
func_t *StartFunc = ::get_func(CurrStartEA); STARS_ea_t CurrStartEA = (STARS_ea_t) startAddr;
func_t *EndFunc = ::get_func(CurrEndEA - 1); STARS_ea_t CurrEndEA = (STARS_ea_t) endAddr;
func_t *StartFunc = ::get_func(CurrStartEA);
if (StartFunc != EndFunc) { func_t *EndFunc = ::get_func(CurrEndEA - 1);
STARS_Segment_t *FuncSeg = this->getseg(CurrStartEA);
assert(nullptr != FuncSeg); if (StartFunc != EndFunc) {
char SegName[STARS_MAXSTR]; STARS_Segment_t *FuncSeg = this->getseg(CurrStartEA);
STARS_ssize_t SegNameLen = FuncSeg->GetSegmentName(SegName, STARS_MAXSTR - 1); assert(nullptr != FuncSeg);
assert(0 < SegNameLen); char SegName[STARS_MAXSTR];
const bool PLTflag = (nullptr != strstr(SegName, "plt")); STARS_ssize_t SegNameLen = FuncSeg->GetSegmentName(SegName, STARS_MAXSTR - 1);
const bool DYNflag = (nullptr != strstr(SegName, "dyn")); assert(0 < SegNameLen);
if (!(PLTflag || DYNflag)) { const bool PLTflag = (nullptr != strstr(SegName, "plt"));
ProblemFound = true; const bool DYNflag = (nullptr != strstr(SegName, "dyn"));
SMP_msg("INFO: FUNCBOUNDS: FDE range from %llx to %llx spans functions in segment %s\n", if (!(PLTflag || DYNflag)) {
(uint64_t) CurrStartEA, (uint64_t) (CurrEndEA - 1), SegName); ProblemFound = true;
bool success = this->RedefineIDAFuncBounds(StartFunc, EndFunc, CurrStartEA, CurrEndEA); SMP_msg("INFO: FUNCBOUNDS: FDE range from %llx to %llx spans functions in segment %s\n",
if (success) (uint64_t) CurrStartEA, (uint64_t) (CurrEndEA - 1), SegName);
SMP_msg("INFO: Redefined IDA FuncBounds successfully.\n"); bool success = this->RedefineIDAFuncBounds(StartFunc, EndFunc, CurrStartEA, CurrEndEA);
else if (success)
SMP_msg("ERROR: Failed to redefine IDA FuncBounds.\n"); SMP_msg("INFO: Redefined IDA FuncBounds successfully.\n");
else
SMP_msg("ERROR: Failed to redefine IDA FuncBounds.\n");
}
} }
} } // end for (const auto FDEveciter : *FDEvecptr)
} // end for (const auto FDEveciter : *FDEvecptr) }
catch(const std::exception& e)
{
const auto msg = string("WARN: Unhandled exception when processing EH frame: ")+e.what();
SMP_msg(msg.c_str());
}
#endif // __X64__ #endif // __X64__
#endif // STARS_USE_EHP_LIB #endif // STARS_USE_EHP_LIB
......