[PATCH] D74560: [WIP] Introduce DWARFDataExtractor::getInitialLength
Pavel Labath via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 13 08:06:22 PST 2020
labath created this revision.
labath added reviewers: dblaikie, jhenderson, ikudrin.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.
This patch introduces a function to house the code needed to do the
DWARF64 detection dance. It also updates two instances of DWARF64
parsing code to use this function instead of the hand-rolled
implementation.
This patch does _not_ attempt to handle the problem of detecting lengths
which extend past the size of the section, or cases when reads of a
single contribution accidentally escape beyond its specified length, but
I think it's useful in its own right.
The idea is that this functionality will be built on top of that, though
I don't have an exact idea of how that will be achieved.
This patch is WIP mainly because I haven't written a unit test for the
new API yet, but I wanted to get this out the door before I call it a
day.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D74560
Files:
llvm/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h
llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp
llvm/lib/DebugInfo/DWARF/DWARFDataExtractor.cpp
llvm/lib/DebugInfo/DWARF/DWARFListTable.cpp
llvm/test/tools/llvm-dwarfdump/X86/debug-names-verify-short1.s
llvm/test/tools/llvm-dwarfdump/X86/debug_rnglists_invalid.s
llvm/test/tools/llvm-dwarfdump/X86/debug_rnglists_reserved_length.s
llvm/unittests/DebugInfo/DWARF/DWARFAcceleratorTableTest.cpp
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