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