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| //===-- ObjectFileMachO.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_ObjectFileMachO_h_
#define liblldb_ObjectFileMachO_h_
#include "lldb/Core/Address.h"
#include "lldb/Core/FileSpecList.h"
#include "lldb/Host/SafeMachO.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/RangeMap.h"
#include "lldb/Utility/UUID.h"
// This class needs to be hidden as eventually belongs in a plugin that
// will export the ObjectFile protocol
class ObjectFileMachO : public lldb_private::ObjectFile {
public:
ObjectFileMachO(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);
ObjectFileMachO(const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp,
const lldb::ProcessSP &process_sp, lldb::addr_t header_addr);
~ObjectFileMachO() override = default;
// Static Functions
static void Initialize();
static void Terminate();
static lldb_private::ConstString GetPluginNameStatic();
static const char *GetPluginDescriptionStatic();
static lldb_private::ObjectFile *
CreateInstance(const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp,
lldb::offset_t data_offset, const lldb_private::FileSpec *file,
lldb::offset_t file_offset, lldb::offset_t length);
static lldb_private::ObjectFile *CreateMemoryInstance(
const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp,
const lldb::ProcessSP &process_sp, lldb::addr_t header_addr);
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 SaveCore(const lldb::ProcessSP &process_sp,
const lldb_private::FileSpec &outfile,
lldb_private::Status &error);
static bool MagicBytesMatch(lldb::DataBufferSP &data_sp, lldb::addr_t offset,
lldb::addr_t length);
// LLVM RTTI support
static char ID;
bool isA(const void *ClassID) const override {
return ClassID == &ID || ObjectFile::isA(ClassID);
}
static bool classof(const ObjectFile *obj) { return obj->isA(&ID); }
// Member Functions
bool ParseHeader() override;
bool SetLoadAddress(lldb_private::Target &target, lldb::addr_t value,
bool value_is_offset) override;
lldb::ByteOrder GetByteOrder() const override;
bool IsExecutable() const override;
bool IsDynamicLoader() const;
uint32_t GetAddressByteSize() const override;
lldb_private::AddressClass GetAddressClass(lldb::addr_t file_addr) override;
lldb_private::Symtab *GetSymtab() override;
bool IsStripped() override;
void CreateSections(lldb_private::SectionList &unified_section_list) override;
void Dump(lldb_private::Stream *s) override;
lldb_private::ArchSpec GetArchitecture() override;
lldb_private::UUID GetUUID() override;
uint32_t GetDependentModules(lldb_private::FileSpecList &files) override;
lldb_private::FileSpecList GetReExportedLibraries() override {
return m_reexported_dylibs;
}
lldb_private::Address GetEntryPointAddress() override;
lldb_private::Address GetBaseAddress() override;
uint32_t GetNumThreadContexts() override;
std::string GetIdentifierString() override;
bool GetCorefileMainBinaryInfo (lldb::addr_t &address, lldb_private::UUID &uuid) override;
lldb::RegisterContextSP
GetThreadContextAtIndex(uint32_t idx, lldb_private::Thread &thread) override;
ObjectFile::Type CalculateType() override;
ObjectFile::Strata CalculateStrata() override;
llvm::VersionTuple GetVersion() override;
llvm::VersionTuple GetMinimumOSVersion() override;
llvm::VersionTuple GetSDKVersion() override;
bool GetIsDynamicLinkEditor() override;
static bool ParseHeader(lldb_private::DataExtractor &data,
lldb::offset_t *data_offset_ptr,
llvm::MachO::mach_header &header);
bool AllowAssemblyEmulationUnwindPlans() override;
// PluginInterface protocol
lldb_private::ConstString GetPluginName() override;
uint32_t GetPluginVersion() override;
protected:
static lldb_private::UUID
GetUUID(const llvm::MachO::mach_header &header,
const lldb_private::DataExtractor &data,
lldb::offset_t lc_offset); // Offset to the first load command
static lldb_private::ArchSpec GetArchitecture(
lldb::ModuleSP module_sp, const llvm::MachO::mach_header &header,
const lldb_private::DataExtractor &data, lldb::offset_t lc_offset);
/// Enumerate all ArchSpecs supported by this Mach-O file.
///
/// On macOS one Mach-O slice can contain multiple load commands:
/// One load command for being loaded into a macOS process and one
/// load command for being loaded into a macCatalyst process. In
/// contrast to ObjectContainerUniversalMachO, this is the same
/// binary that can be loaded into different contexts.
static void GetAllArchSpecs(const llvm::MachO::mach_header &header,
const lldb_private::DataExtractor &data,
lldb::offset_t lc_offset,
lldb_private::ModuleSpec &base_spec,
lldb_private::ModuleSpecList &all_specs);
/// Intended for same-host arm device debugging where lldb needs to
/// detect libraries in the shared cache and augment the nlist entries
/// with an on-disk dyld_shared_cache file. The process will record
/// the shared cache UUID so the on-disk cache can be matched or rejected
/// correctly.
void GetProcessSharedCacheUUID(lldb_private::Process *,
lldb::addr_t &base_addr,
lldb_private::UUID &uuid);
/// Intended for same-host arm device debugging where lldb will read
/// shared cache libraries out of its own memory instead of the remote
/// process' memory as an optimization. If lldb's shared cache UUID
/// does not match the process' shared cache UUID, this optimization
/// should not be used.
void GetLLDBSharedCacheUUID(lldb::addr_t &base_addir, lldb_private::UUID &uuid);
lldb_private::Section *GetMachHeaderSection();
lldb::addr_t CalculateSectionLoadAddressForMemoryImage(
lldb::addr_t mach_header_load_address,
const lldb_private::Section *mach_header_section,
const lldb_private::Section *section);
lldb_private::UUID
GetSharedCacheUUID(lldb_private::FileSpec dyld_shared_cache,
const lldb::ByteOrder byte_order,
const uint32_t addr_byte_size);
size_t ParseSymtab();
typedef lldb_private::RangeArray<uint32_t, uint32_t, 8> EncryptedFileRanges;
EncryptedFileRanges GetEncryptedFileRanges();
struct SegmentParsingContext;
void ProcessDysymtabCommand(const llvm::MachO::load_command &load_cmd,
lldb::offset_t offset);
void ProcessSegmentCommand(const llvm::MachO::load_command &load_cmd,
lldb::offset_t offset, uint32_t cmd_idx,
SegmentParsingContext &context);
void SanitizeSegmentCommand(llvm::MachO::segment_command_64 &seg_cmd,
uint32_t cmd_idx);
bool SectionIsLoadable(const lldb_private::Section *section);
llvm::MachO::mach_header m_header;
static lldb_private::ConstString GetSegmentNameTEXT();
static lldb_private::ConstString GetSegmentNameDATA();
static lldb_private::ConstString GetSegmentNameDATA_DIRTY();
static lldb_private::ConstString GetSegmentNameDATA_CONST();
static lldb_private::ConstString GetSegmentNameOBJC();
static lldb_private::ConstString GetSegmentNameLINKEDIT();
static lldb_private::ConstString GetSegmentNameDWARF();
static lldb_private::ConstString GetSectionNameEHFrame();
llvm::MachO::dysymtab_command m_dysymtab;
std::vector<llvm::MachO::segment_command_64> m_mach_segments;
std::vector<llvm::MachO::section_64> m_mach_sections;
llvm::Optional<llvm::VersionTuple> m_min_os_version;
llvm::Optional<llvm::VersionTuple> m_sdk_versions;
typedef lldb_private::RangeVector<uint32_t, uint32_t> FileRangeArray;
lldb_private::Address m_entry_point_address;
FileRangeArray m_thread_context_offsets;
bool m_thread_context_offsets_valid;
lldb_private::FileSpecList m_reexported_dylibs;
bool m_allow_assembly_emulation_unwind_plans;
};
#endif // liblldb_ObjectFileMachO_h_
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