| //===- DWARFDebugInfoEntry.h ------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H |
| #define LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H |
| |
| #include "llvm/BinaryFormat/Dwarf.h" |
| #include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h" |
| #include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h" |
| #include <cstdint> |
| |
| namespace llvm { |
| |
| class DWARFUnit; |
| |
| /// DWARFDebugInfoEntry - A DIE with only the minimum required data. |
| class DWARFDebugInfoEntry { |
| /// Offset within the .debug_info of the start of this entry. |
| uint64_t Offset = 0; |
| |
| /// Index of the parent die. UINT32_MAX if there is no parent. |
| uint32_t ParentIdx = UINT32_MAX; |
| |
| /// Index of the sibling die. Zero if there is no sibling. |
| uint32_t SiblingIdx = 0; |
| |
| const DWARFAbbreviationDeclaration *AbbrevDecl = nullptr; |
| |
| public: |
| DWARFDebugInfoEntry() = default; |
| |
| /// Extracts a debug info entry, which is a child of a given unit, |
| /// starting at a given offset. If DIE can't be extracted, returns false and |
| /// doesn't change OffsetPtr. |
| /// High performance extraction should use this call. |
| bool extractFast(const DWARFUnit &U, uint64_t *OffsetPtr, |
| const DWARFDataExtractor &DebugInfoData, uint64_t UEndOffset, |
| uint32_t ParentIdx); |
| |
| uint64_t getOffset() const { return Offset; } |
| |
| /// Returns index of the parent die. |
| Optional<uint32_t> getParentIdx() const { |
| if (ParentIdx == UINT32_MAX) |
| return None; |
| |
| return ParentIdx; |
| } |
| |
| /// Returns index of the sibling die. |
| Optional<uint32_t> getSiblingIdx() const { |
| if (SiblingIdx == 0) |
| return None; |
| |
| return SiblingIdx; |
| } |
| |
| /// Set index of sibling. |
| void setSiblingIdx(uint32_t Idx) { SiblingIdx = Idx; } |
| |
| dwarf::Tag getTag() const { |
| return AbbrevDecl ? AbbrevDecl->getTag() : dwarf::DW_TAG_null; |
| } |
| |
| bool hasChildren() const { return AbbrevDecl && AbbrevDecl->hasChildren(); } |
| |
| const DWARFAbbreviationDeclaration *getAbbreviationDeclarationPtr() const { |
| return AbbrevDecl; |
| } |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGINFOENTRY_H |