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MFC r258873: Workaround lldb issue with main module base address

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On FreeBSD lldb sometimes reloads the the main module's (executable's)
  symbols at the wrong address.  Work around this for now by explicitly
  reloading at base_address=0 when it happens.

  A proper fix is needed but early testers have reported this issue so
  this workaround should allow them to make further progress.

  http://llvm.org/bugs/show_bug.cgi?id=17880

Sponsored by:	DARPA, AFRL
This commit is contained in:
emaste 2014-03-19 13:16:58 +00:00
parent 0c69499498
commit 7327a493ea
1 changed files with 11 additions and 0 deletions
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11
contrib/llvm/tools/lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
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@ -454,6 +454,17 @@ DynamicLoaderPOSIXDYLD::LoadAllCurrentModules()
const char *module_path = I->path.c_str();
FileSpec file(module_path, false);
ModuleSP module_sp = LoadModuleAtAddress(file, I->link_addr, I->base_addr);
#ifdef __FreeBSD__ // llvm.org/pr17880
if (module_sp == executable)
{
Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
if (log)
log->Printf("DynamicLoaderPOSIXDYLD::%s reloading main module, ignoring rendezvous base addr %" PRIx64,
__FUNCTION__, I->base_addr);
ModuleSP module_sp = LoadModuleAtAddress(file, I->link_addr, 0);
}
#endif
if (module_sp.get())
{
module_list.Append(module_sp);