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502fd5ddfa
Requires callers to directly associate relocations with a DataExtractor used to read data from a DWARF section, which helps a callee not make assumptions about which section it is reading. This is the next step in reducing DWARFFormValue's dependence on DWARFUnit. Differential Revision: https://reviews.llvm.org/D34704 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306699 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===- DWARFDebugInfoEntry.h ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_DWARFDEBUGINFOENTRY_H
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#define LLVM_DEBUGINFO_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 "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
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#include <cstdint>
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namespace llvm {
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class DataExtractor;
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class DWARFUnit;
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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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uint32_t Offset = 0;
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/// The integer depth of this DIE within the compile unit DIEs where the
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/// compile/type unit DIE has a depth of zero.
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uint32_t Depth = 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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bool extractFast(const DWARFUnit &U, uint32_t *OffsetPtr);
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/// High performance extraction should use this call.
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bool extractFast(const DWARFUnit &U, uint32_t *OffsetPtr,
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const DWARFDataExtractor &DebugInfoData, uint32_t UEndOffset,
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uint32_t Depth);
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uint32_t getOffset() const { return Offset; }
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uint32_t getDepth() const { return Depth; }
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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_DWARFDEBUGINFOENTRY_H
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