OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity

Tolerate DWARF compile unit without filename. 

Summary:
The DW_AT_name attribute of compile unit is optional.
If it is missing, try to get filename from the debug_line section.
This allows the compile unit to be useful without the filename.

Differential Revision: http://reviews.llvm.org/D11003

llvm-svn: 241679
This commit is contained in:
David Srbecky 2015-07-08 14:00:04 +00:00
parent 26a4a40137
commit d515e94070
1 changed files with 28 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
View File

@ -988,24 +988,38 @@ SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
std::string remapped_file;
if (module_sp->RemapSourceFile(cu_file_spec.GetCString(), remapped_file))
cu_file_spec.SetFile(remapped_file, false);
}
LanguageType cu_language = DWARFCompileUnit::LanguageTypeFromDWARF(cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0));
LanguageType cu_language = DWARFCompileUnit::LanguageTypeFromDWARF(cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0));
cu_sp.reset(new CompileUnit (module_sp,
dwarf_cu,
cu_file_spec,
MakeUserID(dwarf_cu->GetOffset()),
cu_language));
if (cu_sp)
cu_sp.reset(new CompileUnit (module_sp,
dwarf_cu,
cu_file_spec,
MakeUserID(dwarf_cu->GetOffset()),
cu_language));
if (cu_sp)
{
// If we just created a compile unit with an invalid file spec, try and get the
// first entry in the supports files from the line table as that should be the
// compile unit.
if (!cu_file_spec)
{
dwarf_cu->SetUserData(cu_sp.get());
// Figure out the compile unit index if we weren't given one
if (cu_idx == UINT32_MAX)
DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
cu_file_spec = cu_sp->GetSupportFiles().GetFileSpecAtIndex(1);
if (cu_file_spec)
{
(FileSpec &)(*cu_sp) = cu_file_spec;
// Also fix the invalid file spec which was copied from the compile unit.
cu_sp->GetSupportFiles().Replace(0, cu_file_spec);
}
}
dwarf_cu->SetUserData(cu_sp.get());
// Figure out the compile unit index if we weren't given one
if (cu_idx == UINT32_MAX)
DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
}
}
}