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issue 243 - Linux dumper should use build id produced by ld --build-id if available

Browse source 
R=thestig at http://breakpad.appspot.com/185001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@830 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2011-08-30 15:21:07 +00:00
parent 68e380d5a7
commit 8ade75f955
5 changed files with 259 additions and 95 deletions
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32
src/common/linux/synth_elf.cc
View file

@ -3,10 +3,15 @@
#include <assert.h>
#include <elf.h>
#include <stdio.h>
#include <string.h>
namespace google_breakpad {
namespace synth_elf {
#ifndef NT_GNU_BUILD_ID
#define NT_GNU_BUILD_ID 3
#endif
ELF::ELF(uint16_t machine,
uint8_t file_class,
Endianness endianness)
@ -169,6 +174,31 @@ void SymbolTable::AddSymbol(const string& name, uint64_t value,
D64(size);
}
BuildIDNote::BuildIDNote(const uint8_t* id_bytes,
size_t id_size,
Endianness endianness) : Section(endianness) {
const char kNoteName[] = "GNU";
// Elf32_Nhdr and Elf64_Nhdr are exactly the same.
Elf32_Nhdr note_header;
memset(&note_header, 0, sizeof(note_header));
note_header.n_namesz = sizeof(kNoteName);
note_header.n_descsz = id_size;
note_header.n_type = NT_GNU_BUILD_ID;
Append(reinterpret_cast<const uint8_t*>(&note_header),
sizeof(note_header));
AppendCString(kNoteName);
Append(id_bytes, id_size);
}
// static
void BuildIDNote::AppendSection(ELF& elf,
const uint8_t* id_bytes,
size_t id_size) {
const char kBuildIDSectionName[] = ".note.gnu.build-id";
BuildIDNote note(id_bytes, id_size, elf.endianness());
elf.AddSection(kBuildIDSectionName, note, SHT_NOTE);
}
} // namespace synth_elf
} // namespace google_breakpad