6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
//===- DWARFDebugInfoEntry.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 LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H
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#define LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H
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#include "llvm/BinaryFormat/Dwarf.h"
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#include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h"
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#include <cstdint>
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namespace llvm {
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class DWARFUnit;
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class DWARFDataExtractor;
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/// DWARFDebugInfoEntry - A DIE with only the minimum required data.
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class DWARFDebugInfoEntry {
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/// Offset within the .debug_info of the start of this entry.
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uint64_t Offset = 0;
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/// Index of the parent die. UINT32_MAX if there is no parent.
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uint32_t ParentIdx = UINT32_MAX;
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/// Index of the sibling die. Zero if there is no sibling.
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uint32_t SiblingIdx = 0;
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const DWARFAbbreviationDeclaration *AbbrevDecl = nullptr;
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public:
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DWARFDebugInfoEntry() = default;
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/// Extracts a debug info entry, which is a child of a given unit,
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/// starting at a given offset. If DIE can't be extracted, returns false and
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/// doesn't change OffsetPtr.
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/// High performance extraction should use this call.
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bool extractFast(const DWARFUnit &U, uint64_t *OffsetPtr,
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const DWARFDataExtractor &DebugInfoData, uint64_t UEndOffset,
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uint32_t ParentIdx);
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uint64_t getOffset() const { return Offset; }
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/// Returns index of the parent die.
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std::optional<uint32_t> getParentIdx() const {
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if (ParentIdx == UINT32_MAX)
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return std::nullopt;
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return ParentIdx;
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}
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/// Returns index of the sibling die.
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std::optional<uint32_t> getSiblingIdx() const {
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if (SiblingIdx == 0)
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return std::nullopt;
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return SiblingIdx;
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}
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/// Set index of sibling.
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void setSiblingIdx(uint32_t Idx) { SiblingIdx = Idx; }
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dwarf::Tag getTag() const {
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return AbbrevDecl ? AbbrevDecl->getTag() : dwarf::DW_TAG_null;
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}
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bool hasChildren() const { return AbbrevDecl && AbbrevDecl->hasChildren(); }
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const DWARFAbbreviationDeclaration *getAbbreviationDeclarationPtr() const {
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return AbbrevDecl;
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}
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};
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H
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