caio/clang-p2996
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Add support for the DWP debug info format

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Summary:
The DWP (DWARF package) format is used to pack multiple dwo files
generated by split-dwarf into a single ELF file to make distributing
them easier. It is part of the DWARFv5 spec and can be generated by
dwp or llvm-dwp from a set of dwo files.

Caviats:
* Only the new version of the dwp format is supported (v2 in GNU
  numbering schema and v5 in the DWARF spec). The old version (v1) is
  already deprecated but binutils 2.24 still generates that one.
* Combining DWP files with module debugging is not yet supported.

Subscribers: emaste, mgorny, aprantl

Differential Revision: https://reviews.llvm.org/D36062

llvm-svn: 311775
This commit is contained in:
Tamas Berghammer
2017-08-25 13:56:14 +00:00
parent c0a6aab6b6
commit 963ce483b8
14 changed files with 318 additions and 14 deletions
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18
lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
View File

@@ -1835,6 +1835,7 @@ void ObjectFileELF::CreateSections(SectionList &unified_section_list) {
static ConstString g_sect_name_dwarf_debug_abbrev(".debug_abbrev");
static ConstString g_sect_name_dwarf_debug_addr(".debug_addr");
static ConstString g_sect_name_dwarf_debug_aranges(".debug_aranges");
static ConstString g_sect_name_dwarf_debug_cu_index(".debug_cu_index");
static ConstString g_sect_name_dwarf_debug_frame(".debug_frame");
static ConstString g_sect_name_dwarf_debug_info(".debug_info");
static ConstString g_sect_name_dwarf_debug_line(".debug_line");
@@ -1904,6 +1905,8 @@ void ObjectFileELF::CreateSections(SectionList &unified_section_list) {
sect_type = eSectionTypeDWARFDebugAddr;
else if (name == g_sect_name_dwarf_debug_aranges)
sect_type = eSectionTypeDWARFDebugAranges;
else if (name == g_sect_name_dwarf_debug_cu_index)
sect_type = eSectionTypeDWARFDebugCuIndex;
else if (name == g_sect_name_dwarf_debug_frame)
sect_type = eSectionTypeDWARFDebugFrame;
else if (name == g_sect_name_dwarf_debug_info)
@@ -2017,13 +2020,14 @@ void ObjectFileELF::CreateSections(SectionList &unified_section_list) {
if (m_sections_ap.get()) {
if (GetType() == eTypeDebugInfo) {
static const SectionType g_sections[] = {
eSectionTypeDWARFDebugAbbrev, eSectionTypeDWARFDebugAddr,
eSectionTypeDWARFDebugAranges, eSectionTypeDWARFDebugFrame,
eSectionTypeDWARFDebugInfo, eSectionTypeDWARFDebugLine,
eSectionTypeDWARFDebugLoc, eSectionTypeDWARFDebugMacInfo,
eSectionTypeDWARFDebugPubNames, eSectionTypeDWARFDebugPubTypes,
eSectionTypeDWARFDebugRanges, eSectionTypeDWARFDebugStr,
eSectionTypeDWARFDebugStrOffsets, eSectionTypeELFSymbolTable,
eSectionTypeDWARFDebugAbbrev, eSectionTypeDWARFDebugAddr,
eSectionTypeDWARFDebugAranges, eSectionTypeDWARFDebugCuIndex,
eSectionTypeDWARFDebugFrame, eSectionTypeDWARFDebugInfo,
eSectionTypeDWARFDebugLine, eSectionTypeDWARFDebugLoc,
eSectionTypeDWARFDebugMacInfo, eSectionTypeDWARFDebugPubNames,
eSectionTypeDWARFDebugPubTypes, eSectionTypeDWARFDebugRanges,
eSectionTypeDWARFDebugStr, eSectionTypeDWARFDebugStrOffsets,
eSectionTypeELFSymbolTable,
};
SectionList *elf_section_list = m_sections_ap.get();
for (size_t idx = 0; idx < sizeof(g_sections) / sizeof(g_sections[0]);