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//===-- DynamicLoaderDarwin.h -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_DynamicLoaderDarwin_h_
#define liblldb_DynamicLoaderDarwin_h_
// C Includes
// C++ Includes
#include <map>
#include <mutex>
#include <vector>
// Other libraries and framework includes
// Project includes
#include "lldb/Core/StructuredData.h"
#include "lldb/Core/UUID.h"
#include "lldb/Host/FileSpec.h"
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Target/Process.h"
#include "lldb/Utility/SafeMachO.h"
#include "llvm/ADT/Triple.h"
namespace lldb_private {
class DynamicLoaderDarwin : public lldb_private::DynamicLoader {
public:
DynamicLoaderDarwin(lldb_private::Process *process);
virtual ~DynamicLoaderDarwin() override;
//------------------------------------------------------------------
/// Called after attaching a process.
///
/// Allow DynamicLoader plug-ins to execute some code after
/// attaching to a process.
//------------------------------------------------------------------
void DidAttach() override;
void DidLaunch() override;
lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread,
bool stop_others) override;
size_t FindEquivalentSymbols(
lldb_private::Symbol *original_symbol,
lldb_private::ModuleList &module_list,
lldb_private::SymbolContextList &equivalent_symbols) override;
lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module,
const lldb::ThreadSP thread,
lldb::addr_t tls_file_addr) override;
bool AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override;
virtual void DoInitialImageFetch() = 0;
virtual bool NeedToDoInitialImageFetch() = 0;
protected:
void PrivateInitialize(lldb_private::Process *process);
void PrivateProcessStateChanged(lldb_private::Process *process,
lldb::StateType state);
void Clear(bool clear_process);
// Clear method for classes derived from this one
virtual void DoClear() = 0;
void SetDYLDModule(lldb::ModuleSP &dyld_module_sp);
lldb::ModuleSP GetDYLDModule();
class Segment {
public:
Segment()
: name(), vmaddr(LLDB_INVALID_ADDRESS), vmsize(0), fileoff(0),
filesize(0), maxprot(0), initprot(0), nsects(0), flags(0) {}
lldb_private::ConstString name;
lldb::addr_t vmaddr;
lldb::addr_t vmsize;
lldb::addr_t fileoff;
lldb::addr_t filesize;
uint32_t maxprot;
uint32_t initprot;
uint32_t nsects;
uint32_t flags;
bool operator==(const Segment &rhs) const {
return name == rhs.name && vmaddr == rhs.vmaddr && vmsize == rhs.vmsize;
}
void PutToLog(lldb_private::Log *log, lldb::addr_t slide) const;
};
struct ImageInfo {
lldb::addr_t address; // Address of mach header for this dylib
lldb::addr_t slide; // The amount to slide all segments by if there is a
// global slide.
lldb::addr_t mod_date; // Modification date for this dylib
lldb_private::FileSpec file_spec; // Resolved path for this dylib
lldb_private::UUID
uuid; // UUID for this dylib if it has one, else all zeros
llvm::MachO::mach_header header; // The mach header for this image
std::vector<Segment> segments; // All segment vmaddr and vmsize pairs for
// this executable (from memory of inferior)
uint32_t load_stop_id; // The process stop ID that the sections for this
// image were loaded
llvm::Triple::OSType os_type; // LC_VERSION_MIN_... load command os type
std::string min_version_os_sdk; // LC_VERSION_MIN_... sdk value
ImageInfo()
: address(LLDB_INVALID_ADDRESS), slide(0), mod_date(0), file_spec(),
uuid(), header(), segments(), load_stop_id(0),
os_type(llvm::Triple::OSType::UnknownOS), min_version_os_sdk() {}
void Clear(bool load_cmd_data_only) {
if (!load_cmd_data_only) {
address = LLDB_INVALID_ADDRESS;
slide = 0;
mod_date = 0;
file_spec.Clear();
::memset(&header, 0, sizeof(header));
}
uuid.Clear();
segments.clear();
load_stop_id = 0;
os_type = llvm::Triple::OSType::UnknownOS;
min_version_os_sdk.clear();
}
bool operator==(const ImageInfo &rhs) const {
return address == rhs.address && slide == rhs.slide &&
mod_date == rhs.mod_date && file_spec == rhs.file_spec &&
uuid == rhs.uuid &&
memcmp(&header, &rhs.header, sizeof(header)) == 0 &&
segments == rhs.segments && os_type == rhs.os_type;
}
bool UUIDValid() const { return uuid.IsValid(); }
uint32_t GetAddressByteSize() {
if (header.cputype) {
if (header.cputype & llvm::MachO::CPU_ARCH_ABI64)
return 8;
else
return 4;
}
return 0;
}
lldb_private::ArchSpec GetArchitecture() const {
return lldb_private::ArchSpec(lldb_private::eArchTypeMachO,
header.cputype, header.cpusubtype);
}
const Segment *FindSegment(const lldb_private::ConstString &name) const;
void PutToLog(lldb_private::Log *log) const;
typedef std::vector<ImageInfo> collection;
typedef collection::iterator iterator;
typedef collection::const_iterator const_iterator;
};
bool UpdateImageLoadAddress(lldb_private::Module *module, ImageInfo &info);
bool UnloadModuleSections(lldb_private::Module *module, ImageInfo &info);
lldb::ModuleSP FindTargetModuleForImageInfo(ImageInfo &image_info,
bool can_create,
bool *did_create_ptr);
void UnloadImages(const std::vector<lldb::addr_t> &solib_addresses);
void UnloadAllImages();
virtual bool SetNotificationBreakpoint() = 0;
virtual void ClearNotificationBreakpoint() = 0;
virtual bool DidSetNotificationBreakpoint() = 0;
typedef std::map<uint64_t, lldb::addr_t> PthreadKeyToTLSMap;
typedef std::map<lldb::user_id_t, PthreadKeyToTLSMap> ThreadIDToTLSMap;
std::recursive_mutex &GetMutex() const { return m_mutex; }
lldb::ModuleSP GetPThreadLibraryModule();
lldb_private::Address GetPthreadSetSpecificAddress();
bool JSONImageInformationIntoImageInfo(
lldb_private::StructuredData::ObjectSP image_details,
ImageInfo::collection &image_infos);
// If image_infos contains / may contain dyld or executable image, call this
// method
// to keep our internal record keeping of the special binaries up-to-date.
void
UpdateSpecialBinariesFromNewImageInfos(ImageInfo::collection &image_infos);
// if image_info is a dyld binary, call this method
void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info);
// If image_infos contains / may contain executable image, call this method
// to keep our internal record keeping of the special dyld binary up-to-date.
void AddExecutableModuleIfInImageInfos(ImageInfo::collection &image_infos);
bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos);
// Whether we should use the new dyld SPI to get shared library information,
// or read
// it directly out of the dyld_all_image_infos. Whether we use the (newer)
// DynamicLoaderMacOS
// plugin or the (older) DynamicLoaderMacOSX plugin.
static bool UseDYLDSPI(lldb_private::Process *process);
lldb::ModuleWP m_dyld_module_wp; // the dyld whose file type (mac, ios, etc)
// matches the process
lldb::ModuleWP m_libpthread_module_wp;
lldb_private::Address m_pthread_getspecific_addr;
ThreadIDToTLSMap m_tid_to_tls_map;
ImageInfo::collection
m_dyld_image_infos; // Current shared libraries information
uint32_t m_dyld_image_infos_stop_id; // The process stop ID that
// "m_dyld_image_infos" is valid for
ImageInfo m_dyld;
mutable std::recursive_mutex m_mutex;
private:
DISALLOW_COPY_AND_ASSIGN(DynamicLoaderDarwin);
};
} // namespace lldb_private
#endif // liblldb_DynamicLoaderDarwin_h_
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