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