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126 lines
3.8 KiB
126 lines
3.8 KiB
4 months ago
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//===-- DWARFBaseDIE.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 LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFBASEDIE_H
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#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFBASEDIE_H
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#include "lldb/Core/dwarf.h"
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#include "lldb/lldb-types.h"
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#include "llvm/Support/Error.h"
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class DIERef;
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class DWARFASTParser;
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class DWARFAttributes;
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class DWARFUnit;
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class DWARFDebugInfoEntry;
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class DWARFDeclContext;
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class SymbolFileDWARF;
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class DWARFBaseDIE {
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public:
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DWARFBaseDIE() : m_cu(nullptr), m_die(nullptr) {}
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DWARFBaseDIE(DWARFUnit *cu, DWARFDebugInfoEntry *die)
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: m_cu(cu), m_die(die) {}
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DWARFBaseDIE(const DWARFUnit *cu, DWARFDebugInfoEntry *die)
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: m_cu(const_cast<DWARFUnit *>(cu)), m_die(die) {}
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DWARFBaseDIE(DWARFUnit *cu, const DWARFDebugInfoEntry *die)
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: m_cu(cu), m_die(const_cast<DWARFDebugInfoEntry *>(die)) {}
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DWARFBaseDIE(const DWARFUnit *cu, const DWARFDebugInfoEntry *die)
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: m_cu(const_cast<DWARFUnit *>(cu)),
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m_die(const_cast<DWARFDebugInfoEntry *>(die)) {}
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// Tests
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explicit operator bool() const { return IsValid(); }
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bool IsValid() const { return m_cu && m_die; }
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bool HasChildren() const;
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bool Supports_DW_AT_APPLE_objc_complete_type() const;
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// Accessors
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SymbolFileDWARF *GetDWARF() const;
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DWARFUnit *GetCU() const { return m_cu; }
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DWARFDebugInfoEntry *GetDIE() const { return m_die; }
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llvm::Optional<DIERef> GetDIERef() const;
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void Set(DWARFUnit *cu, DWARFDebugInfoEntry *die) {
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if (cu && die) {
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m_cu = cu;
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m_die = die;
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} else {
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Clear();
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}
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}
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void Clear() {
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m_cu = nullptr;
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m_die = nullptr;
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}
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// Get the data that contains the attribute values for this DIE. Support
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// for .debug_types means that any DIE can have its data either in the
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// .debug_info or the .debug_types section; this method will return the
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// correct section data.
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//
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// Clients must validate that this object is valid before calling this.
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const lldb_private::DWARFDataExtractor &GetData() const;
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// Accessing information about a DIE
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dw_tag_t Tag() const;
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const char *GetTagAsCString() const;
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dw_offset_t GetOffset() const;
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// Get the LLDB user ID for this DIE. This is often just the DIE offset,
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// but it might have a SymbolFileDWARF::GetID() in the high 32 bits if
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// we are doing Darwin DWARF in .o file, or DWARF stand alone debug
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// info.
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lldb::user_id_t GetID() const;
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const char *GetName() const;
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lldb::ModuleSP GetModule() const;
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// Getting attribute values from the DIE.
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//
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// GetAttributeValueAsXXX() functions should only be used if you are
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// looking for one or two attributes on a DIE. If you are trying to
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// parse all attributes, use GetAttributes (...) instead
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const char *GetAttributeValueAsString(const dw_attr_t attr,
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const char *fail_value) const;
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uint64_t GetAttributeValueAsUnsigned(const dw_attr_t attr,
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uint64_t fail_value) const;
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uint64_t GetAttributeValueAsAddress(const dw_attr_t attr,
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uint64_t fail_value) const;
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enum class Recurse : bool { no, yes };
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size_t GetAttributes(DWARFAttributes &attributes,
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Recurse recurse = Recurse::yes) const;
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protected:
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DWARFUnit *m_cu;
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DWARFDebugInfoEntry *m_die;
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};
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bool operator==(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs);
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bool operator!=(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs);
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#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFBASEDIE_H
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