1ad655e255
This patch removes the size_t return value and the append parameter from the remainder of the Find.* functions in LLDB's internal API. As in the previous patches, this is motivated by the fact that these parameters aren't really used, and in the case of the append parameter were frequently implemented incorrectly. Differential Revision: https://reviews.llvm.org/D69119 llvm-svn: 375160
247 lines
8.0 KiB
C++
247 lines
8.0 KiB
C++
//===-- DynamicLoaderDarwin.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 liblldb_DynamicLoaderDarwin_h_
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#define liblldb_DynamicLoaderDarwin_h_
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#include <map>
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#include <mutex>
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#include <vector>
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#include "lldb/Host/SafeMachO.h"
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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/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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~DynamicLoaderDarwin() override;
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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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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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void 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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/// Address of mach header for this dylib.
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lldb::addr_t address = LLDB_INVALID_ADDRESS;
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/// The amount to slide all segments by if there is a global
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/// slide.
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lldb::addr_t slide = 0;
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/// Modification date for this dylib.
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lldb::addr_t mod_date = 0;
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/// Resolved path for this dylib.
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lldb_private::FileSpec file_spec;
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/// UUID for this dylib if it has one, else all zeros.
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lldb_private::UUID uuid;
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/// The mach header for this image.
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llvm::MachO::mach_header header;
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/// All segment vmaddr and vmsize pairs for this executable (from
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/// memory of inferior).
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std::vector<Segment> segments;
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/// The process stop ID that the sections for this image were
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/// loaded.
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uint32_t load_stop_id = 0;
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/// LC_VERSION_MIN_... load command os type.
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llvm::Triple::OSType os_type = llvm::Triple::OSType::UnknownOS;
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/// LC_VERSION_MIN_... load command os environment.
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llvm::Triple::EnvironmentType os_env =
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llvm::Triple::EnvironmentType::UnknownEnvironment;
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/// LC_VERSION_MIN_... SDK.
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std::string min_version_os_sdk;
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ImageInfo() = default;
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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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os_env = llvm::Triple::EnvironmentType::UnknownEnvironment;
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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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os_env == rhs.os_env;
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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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const Segment *FindSegment(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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