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https://github.com/capstone-engine/llvm-capstone.git
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1ccde53342
--gdb-index currently crashes when reading a translation unit with DWARF v5 .debug_loclists . Call stack: ``` SyntheticSections.cpp GdbIndexSection::create SyntheticSections.cpp readAddressAreas DWARFUnit.cpp DWARFUnit::tryExtractDIEsIfNeeded DWARFListTable.cpp DWARFListTableHeader::extract ... DWARFDataExtractor.cpp DWARFDataExtractor::getRelocatedValue lld/ELF/DWARF.cpp LLDDwarfObj<ELFT>::find (sec.sec is nullptr) ... ``` This patch adds support for .debug_loclists to make `DWARFUnit::tryExtractDIEsIfNeeded` happy. Building --gdb-index does not need .debug_loclists Reviewed By: dblaikie, grimar Differential Revision: https://reviews.llvm.org/D79061
103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
//===- DWARF.h -----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===-------------------------------------------------------------------===//
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#ifndef LLD_ELF_DWARF_H
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#define LLD_ELF_DWARF_H
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#include "InputFiles.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/DebugInfo/DWARF/DWARFContext.h"
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#include "llvm/Object/ELF.h"
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namespace lld {
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namespace elf {
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class InputSection;
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struct LLDDWARFSection final : public llvm::DWARFSection {
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InputSectionBase *sec = nullptr;
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};
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template <class ELFT> class LLDDwarfObj final : public llvm::DWARFObject {
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public:
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explicit LLDDwarfObj(ObjFile<ELFT> *obj);
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void forEachInfoSections(
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llvm::function_ref<void(const llvm::DWARFSection &)> f) const override {
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f(infoSection);
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}
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const llvm::DWARFSection &getLoclistsSection() const override {
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return loclistsSection;
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}
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const llvm::DWARFSection &getRangesSection() const override {
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return rangesSection;
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}
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const llvm::DWARFSection &getRnglistsSection() const override {
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return rnglistsSection;
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}
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const llvm::DWARFSection &getStrOffsetsSection() const override {
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return strOffsetsSection;
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}
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const llvm::DWARFSection &getLineSection() const override {
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return lineSection;
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}
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const llvm::DWARFSection &getAddrSection() const override {
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return addrSection;
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}
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const llvm::DWARFSection &getGnuPubnamesSection() const override {
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return gnuPubnamesSection;
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}
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const llvm::DWARFSection &getGnuPubtypesSection() const override {
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return gnuPubtypesSection;
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}
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StringRef getFileName() const override { return ""; }
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StringRef getAbbrevSection() const override { return abbrevSection; }
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StringRef getStrSection() const override { return strSection; }
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StringRef getLineStrSection() const override { return lineStrSection; }
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bool isLittleEndian() const override {
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return ELFT::TargetEndianness == llvm::support::little;
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}
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llvm::Optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec,
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uint64_t pos) const override;
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private:
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template <class RelTy>
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llvm::Optional<llvm::RelocAddrEntry> findAux(const InputSectionBase &sec,
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uint64_t pos,
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ArrayRef<RelTy> rels) const;
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LLDDWARFSection gnuPubnamesSection;
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LLDDWARFSection gnuPubtypesSection;
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LLDDWARFSection infoSection;
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LLDDWARFSection loclistsSection;
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LLDDWARFSection rangesSection;
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LLDDWARFSection rnglistsSection;
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LLDDWARFSection strOffsetsSection;
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LLDDWARFSection lineSection;
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LLDDWARFSection addrSection;
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StringRef abbrevSection;
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StringRef strSection;
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StringRef lineStrSection;
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};
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} // namespace elf
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} // namespace lld
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#endif
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