[PATCH] D75929: [DebugInfo] Support DWARFv5 index sections.

[Igor Kudrin via Phabricator via llvm-commits]

ikudrin created this revision.
ikudrin added reviewers: dblaikie, probinson, jhenderson, aprantl, labath.
ikudrin added projects: LLVM, debug-info.
Herald added subscribers: lldb-commits, arphaman, hiraditya.
Herald added a project: LLDB.

DWARFv5 defines index sections in package files in a slightly different way than the pre-standard GNU proposal, see Section 7.3.5 in the DWARF standard and https://gcc.gnu.org/wiki/DebugFissionDWP for GNU proposal. The main concern here is values for section identifiers, which are partially overlapped with changed meanings. The patch adds support for v5 index sections and resolves that difficulty by defining a set of identifiers for internal use which can represent and distinct values of both standards.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75929

Files:
  lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
  lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
  llvm/include/llvm/BinaryFormat/Dwarf.def
  llvm/include/llvm/DebugInfo/DWARF/DWARFUnitIndex.h
  llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
  llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp
  llvm/lib/DebugInfo/DWARF/DWARFUnitIndex.cpp
  llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
  llvm/test/DebugInfo/X86/dwp-v2-cu-index.s
  llvm/test/DebugInfo/X86/dwp-v2-loc.s
  llvm/test/DebugInfo/X86/dwp-v2-tu-index.s
  llvm/test/DebugInfo/X86/dwp-v5-cu-index.s
  llvm/test/DebugInfo/X86/dwp-v5-loclists.s
  llvm/test/DebugInfo/X86/dwp-v5-tu-index.s
  llvm/test/tools/llvm-dwp/X86/unsupported_cu_index_version.s
  llvm/tools/llvm-dwp/llvm-dwp.cpp

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