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178 lines
5.7 KiB
178 lines
5.7 KiB
4 months ago
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//===-- ObjectContainerBSDArchive.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_OBJECTCONTAINER_BSD_ARCHIVE_OBJECTCONTAINERBSDARCHIVE_H
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#define LLDB_SOURCE_PLUGINS_OBJECTCONTAINER_BSD_ARCHIVE_OBJECTCONTAINERBSDARCHIVE_H
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#include "lldb/Core/UniqueCStringMap.h"
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#include "lldb/Symbol/ObjectContainer.h"
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#include "lldb/Utility/ArchSpec.h"
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#include "lldb/Utility/ConstString.h"
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#include "lldb/Utility/FileSpec.h"
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#include "llvm/Support/Chrono.h"
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#include <map>
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#include <memory>
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#include <mutex>
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class ObjectContainerBSDArchive : public lldb_private::ObjectContainer {
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public:
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ObjectContainerBSDArchive(const lldb::ModuleSP &module_sp,
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lldb::DataBufferSP &data_sp,
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lldb::offset_t data_offset,
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const lldb_private::FileSpec *file,
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lldb::offset_t offset, lldb::offset_t length);
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~ObjectContainerBSDArchive() override;
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// Static Functions
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static void Initialize();
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static void Terminate();
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static lldb_private::ConstString GetPluginNameStatic();
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static const char *GetPluginDescriptionStatic();
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static lldb_private::ObjectContainer *
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CreateInstance(const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp,
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lldb::offset_t data_offset, const lldb_private::FileSpec *file,
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lldb::offset_t offset, lldb::offset_t length);
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static size_t GetModuleSpecifications(const lldb_private::FileSpec &file,
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lldb::DataBufferSP &data_sp,
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lldb::offset_t data_offset,
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lldb::offset_t file_offset,
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lldb::offset_t length,
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lldb_private::ModuleSpecList &specs);
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static bool MagicBytesMatch(const lldb_private::DataExtractor &data);
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// Member Functions
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bool ParseHeader() override;
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size_t GetNumObjects() const override {
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if (m_archive_sp)
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return m_archive_sp->GetNumObjects();
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return 0;
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}
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void Dump(lldb_private::Stream *s) const override;
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lldb::ObjectFileSP GetObjectFile(const lldb_private::FileSpec *file) override;
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// PluginInterface protocol
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lldb_private::ConstString GetPluginName() override;
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uint32_t GetPluginVersion() override;
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protected:
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struct Object {
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Object();
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void Clear();
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lldb::offset_t Extract(const lldb_private::DataExtractor &data,
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lldb::offset_t offset);
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/// Object name in the archive.
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lldb_private::ConstString ar_name;
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/// Object modification time in the archive.
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uint32_t modification_time;
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/// Object user id in the archive.
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uint16_t uid;
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/// Object group id in the archive.
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uint16_t gid;
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/// Object octal file permissions in the archive.
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uint16_t mode;
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/// Object size in bytes in the archive.
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uint32_t size;
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/// File offset in bytes from the beginning of the file of the object data.
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lldb::offset_t file_offset;
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/// Length of the object data.
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lldb::offset_t file_size;
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};
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class Archive {
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public:
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typedef std::shared_ptr<Archive> shared_ptr;
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typedef std::multimap<lldb_private::FileSpec, shared_ptr> Map;
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Archive(const lldb_private::ArchSpec &arch,
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const llvm::sys::TimePoint<> &mod_time, lldb::offset_t file_offset,
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lldb_private::DataExtractor &data);
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~Archive();
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static Map &GetArchiveCache();
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static std::recursive_mutex &GetArchiveCacheMutex();
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static Archive::shared_ptr FindCachedArchive(
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const lldb_private::FileSpec &file, const lldb_private::ArchSpec &arch,
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const llvm::sys::TimePoint<> &mod_time, lldb::offset_t file_offset);
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static Archive::shared_ptr ParseAndCacheArchiveForFile(
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const lldb_private::FileSpec &file, const lldb_private::ArchSpec &arch,
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const llvm::sys::TimePoint<> &mod_time, lldb::offset_t file_offset,
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lldb_private::DataExtractor &data);
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size_t GetNumObjects() const { return m_objects.size(); }
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const Object *GetObjectAtIndex(size_t idx) {
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if (idx < m_objects.size())
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return &m_objects[idx];
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return nullptr;
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}
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size_t ParseObjects();
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Object *FindObject(lldb_private::ConstString object_name,
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const llvm::sys::TimePoint<> &object_mod_time);
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lldb::offset_t GetFileOffset() const { return m_file_offset; }
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const llvm::sys::TimePoint<> &GetModificationTime() {
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return m_modification_time;
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}
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const lldb_private::ArchSpec &GetArchitecture() const { return m_arch; }
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void SetArchitecture(const lldb_private::ArchSpec &arch) { m_arch = arch; }
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bool HasNoExternalReferences() const;
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lldb_private::DataExtractor &GetData() { return m_data; }
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protected:
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typedef lldb_private::UniqueCStringMap<uint32_t> ObjectNameToIndexMap;
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// Member Variables
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lldb_private::ArchSpec m_arch;
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llvm::sys::TimePoint<> m_modification_time;
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lldb::offset_t m_file_offset;
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std::vector<Object> m_objects;
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ObjectNameToIndexMap m_object_name_to_index_map;
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lldb_private::DataExtractor m_data; ///< The data for this object container
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///so we don't lose data if the .a files
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///gets modified
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};
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void SetArchive(Archive::shared_ptr &archive_sp);
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Archive::shared_ptr m_archive_sp;
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};
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#endif // LLDB_SOURCE_PLUGINS_OBJECTCONTAINER_BSD_ARCHIVE_OBJECTCONTAINERBSDARCHIVE_H
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