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author | Kate Stone <katherine.stone@apple.com> | 2016-09-06 20:57:50 +0000 |
---|---|---|
committer | Kate Stone <katherine.stone@apple.com> | 2016-09-06 20:57:50 +0000 |
commit | b9c1b51e45b845debb76d8658edabca70ca56079 (patch) | |
tree | dfcb5a13ef2b014202340f47036da383eaee74aa /lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp | |
parent | d5aa73376966339caad04013510626ec2e42c760 (diff) | |
download | llvm-b9c1b51e45b845debb76d8658edabca70ca56079.zip llvm-b9c1b51e45b845debb76d8658edabca70ca56079.tar.gz llvm-b9c1b51e45b845debb76d8658edabca70ca56079.tar.bz2 |
*** This commit represents a complete reformatting of the LLDB source code
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
Diffstat (limited to 'lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp')
-rw-r--r-- | lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp | 834 |
1 files changed, 388 insertions, 446 deletions
diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp index 718134a..70961c0 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp @@ -15,158 +15,131 @@ #include "lldb/Core/Section.h" #include "lldb/Core/State.h" #include "lldb/Symbol/ClangASTContext.h" -#include "lldb/Symbol/SymbolVendor.h" #include "lldb/Symbol/ObjectFile.h" +#include "lldb/Symbol/SymbolVendor.h" #include "lldb/Target/ABI.h" +#include "lldb/Target/StackFrame.h" #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" -#include "lldb/Target/StackFrame.h" -#include "DynamicLoaderMacOS.h" #include "DynamicLoaderDarwin.h" +#include "DynamicLoaderMacOS.h" using namespace lldb; using namespace lldb_private; - //---------------------------------------------------------------------- // Create an instance of this class. This function is filled into // the plugin info class that gets handed out by the plugin factory and // allows the lldb to instantiate an instance of this class. //---------------------------------------------------------------------- -DynamicLoader * -DynamicLoaderMacOS::CreateInstance (Process* process, bool force) -{ - bool create = force; - if (!create) - { - create = true; - Module* exe_module = process->GetTarget().GetExecutableModulePointer(); - if (exe_module) - { - ObjectFile *object_file = exe_module->GetObjectFile(); - if (object_file) - { - create = (object_file->GetStrata() == ObjectFile::eStrataUser); - } - } - - if (create) - { - const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); - switch (triple_ref.getOS()) - { - case llvm::Triple::Darwin: - case llvm::Triple::MacOSX: - case llvm::Triple::IOS: - case llvm::Triple::TvOS: - case llvm::Triple::WatchOS: - create = triple_ref.getVendor() == llvm::Triple::Apple; - break; - default: - create = false; - break; - } - } +DynamicLoader *DynamicLoaderMacOS::CreateInstance(Process *process, + bool force) { + bool create = force; + if (!create) { + create = true; + Module *exe_module = process->GetTarget().GetExecutableModulePointer(); + if (exe_module) { + ObjectFile *object_file = exe_module->GetObjectFile(); + if (object_file) { + create = (object_file->GetStrata() == ObjectFile::eStrataUser); + } } - if (UseDYLDSPI (process) == false) - { + if (create) { + const llvm::Triple &triple_ref = + process->GetTarget().GetArchitecture().GetTriple(); + switch (triple_ref.getOS()) { + case llvm::Triple::Darwin: + case llvm::Triple::MacOSX: + case llvm::Triple::IOS: + case llvm::Triple::TvOS: + case llvm::Triple::WatchOS: + create = triple_ref.getVendor() == llvm::Triple::Apple; + break; + default: create = false; + break; + } } - - if (create) - return new DynamicLoaderMacOS (process); - return NULL; + } + + if (UseDYLDSPI(process) == false) { + create = false; + } + + if (create) + return new DynamicLoaderMacOS(process); + return NULL; } //---------------------------------------------------------------------- // Constructor //---------------------------------------------------------------------- -DynamicLoaderMacOS::DynamicLoaderMacOS (Process* process) : - DynamicLoaderDarwin(process), - m_image_infos_stop_id (UINT32_MAX), - m_break_id(LLDB_INVALID_BREAK_ID), - m_mutex() -{ -} +DynamicLoaderMacOS::DynamicLoaderMacOS(Process *process) + : DynamicLoaderDarwin(process), m_image_infos_stop_id(UINT32_MAX), + m_break_id(LLDB_INVALID_BREAK_ID), m_mutex() {} //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- -DynamicLoaderMacOS::~DynamicLoaderMacOS() -{ - if (LLDB_BREAK_ID_IS_VALID(m_break_id)) - m_process->GetTarget().RemoveBreakpointByID (m_break_id); +DynamicLoaderMacOS::~DynamicLoaderMacOS() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); } -bool -DynamicLoaderMacOS::ProcessDidExec () -{ - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - bool did_exec = false; - if (m_process) - { - // If we are stopped after an exec, we will have only one thread... - if (m_process->GetThreadList().GetSize() == 1) - { - // See if we are stopped at '_dyld_start' - ThreadSP thread_sp (m_process->GetThreadList().GetThreadAtIndex(0)); - if (thread_sp) - { - lldb::StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex(0)); - if (frame_sp) - { - const Symbol *symbol = frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol; - if (symbol) - { - if (symbol->GetName() == ConstString("_dyld_start")) - did_exec = true; - } - } - } - +bool DynamicLoaderMacOS::ProcessDidExec() { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + bool did_exec = false; + if (m_process) { + // If we are stopped after an exec, we will have only one thread... + if (m_process->GetThreadList().GetSize() == 1) { + // See if we are stopped at '_dyld_start' + ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0)); + if (thread_sp) { + lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0)); + if (frame_sp) { + const Symbol *symbol = + frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol; + if (symbol) { + if (symbol->GetName() == ConstString("_dyld_start")) + did_exec = true; + } } + } } + } - if (did_exec) - { - m_libpthread_module_wp.reset(); - m_pthread_getspecific_addr.Clear(); - } - return did_exec; + if (did_exec) { + m_libpthread_module_wp.reset(); + m_pthread_getspecific_addr.Clear(); + } + return did_exec; } //---------------------------------------------------------------------- // Clear out the state of this class. //---------------------------------------------------------------------- -void -DynamicLoaderMacOS::DoClear () -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); +void DynamicLoaderMacOS::DoClear() { + std::lock_guard<std::recursive_mutex> guard(m_mutex); - if (LLDB_BREAK_ID_IS_VALID(m_break_id)) - m_process->GetTarget().RemoveBreakpointByID (m_break_id); + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); - m_break_id = LLDB_INVALID_BREAK_ID; + m_break_id = LLDB_INVALID_BREAK_ID; } //---------------------------------------------------------------------- // Check if we have found DYLD yet //---------------------------------------------------------------------- -bool -DynamicLoaderMacOS::DidSetNotificationBreakpoint() -{ - return LLDB_BREAK_ID_IS_VALID (m_break_id); +bool DynamicLoaderMacOS::DidSetNotificationBreakpoint() { + return LLDB_BREAK_ID_IS_VALID(m_break_id); } -void -DynamicLoaderMacOS::ClearNotificationBreakpoint () -{ - if (LLDB_BREAK_ID_IS_VALID (m_break_id)) - { - m_process->GetTarget().RemoveBreakpointByID (m_break_id); - } +void DynamicLoaderMacOS::ClearNotificationBreakpoint() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) { + m_process->GetTarget().RemoveBreakpointByID(m_break_id); + } } //---------------------------------------------------------------------- @@ -175,407 +148,376 @@ DynamicLoaderMacOS::ClearNotificationBreakpoint () // to get the DYLD info (available on SnowLeopard only). If that fails, // then check in the default addresses. //---------------------------------------------------------------------- -void -DynamicLoaderMacOS::DoInitialImageFetch() -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - - StructuredData::ObjectSP all_image_info_json_sp (m_process->GetLoadedDynamicLibrariesInfos ()); - ImageInfo::collection image_infos; - if (all_image_info_json_sp.get() - && all_image_info_json_sp->GetAsDictionary() - && all_image_info_json_sp->GetAsDictionary()->HasKey("images") - && all_image_info_json_sp->GetAsDictionary()->GetValueForKey("images")->GetAsArray()) - { - if (JSONImageInformationIntoImageInfo (all_image_info_json_sp, image_infos)) - { - if (log) - log->Printf ("Initial module fetch: Adding %" PRId64 " modules.\n", (uint64_t) image_infos.size()); - - UpdateSpecialBinariesFromNewImageInfos (image_infos); - AddModulesUsingImageInfos (image_infos); - } +void DynamicLoaderMacOS::DoInitialImageFetch() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + + StructuredData::ObjectSP all_image_info_json_sp( + m_process->GetLoadedDynamicLibrariesInfos()); + ImageInfo::collection image_infos; + if (all_image_info_json_sp.get() && + all_image_info_json_sp->GetAsDictionary() && + all_image_info_json_sp->GetAsDictionary()->HasKey("images") && + all_image_info_json_sp->GetAsDictionary() + ->GetValueForKey("images") + ->GetAsArray()) { + if (JSONImageInformationIntoImageInfo(all_image_info_json_sp, + image_infos)) { + if (log) + log->Printf("Initial module fetch: Adding %" PRId64 " modules.\n", + (uint64_t)image_infos.size()); + + UpdateSpecialBinariesFromNewImageInfos(image_infos); + AddModulesUsingImageInfos(image_infos); } - - m_dyld_image_infos_stop_id = m_process->GetStopID(); -} + } -bool -DynamicLoaderMacOS::NeedToDoInitialImageFetch () -{ - return true; + m_dyld_image_infos_stop_id = m_process->GetStopID(); } +bool DynamicLoaderMacOS::NeedToDoInitialImageFetch() { return true; } + //---------------------------------------------------------------------- // Static callback function that gets called when our DYLD notification // breakpoint gets hit. We update all of our image infos and then // let our super class DynamicLoader class decide if we should stop // or not (based on global preference). //---------------------------------------------------------------------- -bool -DynamicLoaderMacOS::NotifyBreakpointHit (void *baton, - StoppointCallbackContext *context, - lldb::user_id_t break_id, - lldb::user_id_t break_loc_id) -{ - // Let the event know that the images have changed - // DYLD passes three arguments to the notification breakpoint. - // Arg1: enum dyld_notify_mode mode - 0 = adding, 1 = removing, 2 = remove all - // Arg2: unsigned long icount - Number of shared libraries added/removed - // Arg3: uint64_t mach_headers[] - Array of load addresses of binaries added/removed - - DynamicLoaderMacOS* dyld_instance = (DynamicLoaderMacOS*) baton; - - ExecutionContext exe_ctx (context->exe_ctx_ref); - Process *process = exe_ctx.GetProcessPtr(); - - // This is a sanity check just in case this dyld_instance is an old dyld plugin's breakpoint still lying around. - if (process != dyld_instance->m_process) - return false; - - if (dyld_instance->m_image_infos_stop_id != UINT32_MAX - && process->GetStopID() < dyld_instance->m_image_infos_stop_id) - { - return false; - } +bool DynamicLoaderMacOS::NotifyBreakpointHit(void *baton, + StoppointCallbackContext *context, + lldb::user_id_t break_id, + lldb::user_id_t break_loc_id) { + // Let the event know that the images have changed + // DYLD passes three arguments to the notification breakpoint. + // Arg1: enum dyld_notify_mode mode - 0 = adding, 1 = removing, 2 = remove all + // Arg2: unsigned long icount - Number of shared libraries + // added/removed + // Arg3: uint64_t mach_headers[] - Array of load addresses of binaries + // added/removed + + DynamicLoaderMacOS *dyld_instance = (DynamicLoaderMacOS *)baton; + + ExecutionContext exe_ctx(context->exe_ctx_ref); + Process *process = exe_ctx.GetProcessPtr(); + + // This is a sanity check just in case this dyld_instance is an old dyld + // plugin's breakpoint still lying around. + if (process != dyld_instance->m_process) + return false; - const lldb::ABISP &abi = process->GetABI(); - if (abi) - { - // Build up the value array to store the three arguments given above, then get the values from the ABI: - - ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext(); - ValueList argument_values; - - Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0, dyld_notify_removing=1, dyld_notify_remove_all=2 }; - Value count_value; // unsigned long count - Value headers_value; // uint64_t machHeaders[] (aka void*) - - CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); - CompilerType clang_uint32_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); - CompilerType clang_uint64_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); - - mode_value.SetValueType (Value::eValueTypeScalar); - mode_value.SetCompilerType (clang_uint32_type); - - if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 4) - { - count_value.SetValueType (Value::eValueTypeScalar); - count_value.SetCompilerType (clang_uint32_type); - } - else - { - count_value.SetValueType (Value::eValueTypeScalar); - count_value.SetCompilerType (clang_uint64_type); - } + if (dyld_instance->m_image_infos_stop_id != UINT32_MAX && + process->GetStopID() < dyld_instance->m_image_infos_stop_id) { + return false; + } + + const lldb::ABISP &abi = process->GetABI(); + if (abi) { + // Build up the value array to store the three arguments given above, then + // get the values from the ABI: + + ClangASTContext *clang_ast_context = + process->GetTarget().GetScratchClangASTContext(); + ValueList argument_values; + + Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0, + // dyld_notify_removing=1, dyld_notify_remove_all=2 }; + Value count_value; // unsigned long count + Value headers_value; // uint64_t machHeaders[] (aka void*) + + CompilerType clang_void_ptr_type = + clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); + CompilerType clang_uint32_type = + clang_ast_context->GetBuiltinTypeForEncodingAndBitSize( + lldb::eEncodingUint, 32); + CompilerType clang_uint64_type = + clang_ast_context->GetBuiltinTypeForEncodingAndBitSize( + lldb::eEncodingUint, 32); + + mode_value.SetValueType(Value::eValueTypeScalar); + mode_value.SetCompilerType(clang_uint32_type); + + if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 4) { + count_value.SetValueType(Value::eValueTypeScalar); + count_value.SetCompilerType(clang_uint32_type); + } else { + count_value.SetValueType(Value::eValueTypeScalar); + count_value.SetCompilerType(clang_uint64_type); + } - headers_value.SetValueType (Value::eValueTypeScalar); - headers_value.SetCompilerType (clang_void_ptr_type); - - argument_values.PushValue (mode_value); - argument_values.PushValue (count_value); - argument_values.PushValue (headers_value); - - if (abi->GetArgumentValues (exe_ctx.GetThreadRef(), argument_values)) - { - uint32_t dyld_mode = argument_values.GetValueAtIndex(0)->GetScalar().UInt (-1); - if (dyld_mode != static_cast<uint32_t>(-1)) - { - // Okay the mode was right, now get the number of elements, and the array of new elements... - uint32_t image_infos_count = argument_values.GetValueAtIndex(1)->GetScalar().UInt (-1); - if (image_infos_count != static_cast<uint32_t>(-1)) - { - addr_t header_array = argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1); - if (header_array != static_cast<uint64_t>(-1)) - { - std::vector<addr_t> image_load_addresses; - for (uint64_t i = 0; i < image_infos_count ; i++) - { - Error error; - addr_t addr = process->ReadUnsignedIntegerFromMemory (header_array + (8 * i), 8, LLDB_INVALID_ADDRESS, error); - if (addr != LLDB_INVALID_ADDRESS) - { - image_load_addresses.push_back (addr); - } - } - if (dyld_mode == 0) - { - // dyld_notify_adding - dyld_instance->AddBinaries (image_load_addresses); - } - else if (dyld_mode == 1) - { - // dyld_notify_removing - dyld_instance->UnloadImages (image_load_addresses); - } - else if (dyld_mode == 2) - { - // dyld_notify_remove_all - dyld_instance->UnloadAllImages (); - } - } - } + headers_value.SetValueType(Value::eValueTypeScalar); + headers_value.SetCompilerType(clang_void_ptr_type); + + argument_values.PushValue(mode_value); + argument_values.PushValue(count_value); + argument_values.PushValue(headers_value); + + if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) { + uint32_t dyld_mode = + argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1); + if (dyld_mode != static_cast<uint32_t>(-1)) { + // Okay the mode was right, now get the number of elements, and the + // array of new elements... + uint32_t image_infos_count = + argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1); + if (image_infos_count != static_cast<uint32_t>(-1)) { + addr_t header_array = + argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1); + if (header_array != static_cast<uint64_t>(-1)) { + std::vector<addr_t> image_load_addresses; + for (uint64_t i = 0; i < image_infos_count; i++) { + Error error; + addr_t addr = process->ReadUnsignedIntegerFromMemory( + header_array + (8 * i), 8, LLDB_INVALID_ADDRESS, error); + if (addr != LLDB_INVALID_ADDRESS) { + image_load_addresses.push_back(addr); + } + } + if (dyld_mode == 0) { + // dyld_notify_adding + dyld_instance->AddBinaries(image_load_addresses); + } else if (dyld_mode == 1) { + // dyld_notify_removing + dyld_instance->UnloadImages(image_load_addresses); + } else if (dyld_mode == 2) { + // dyld_notify_remove_all + dyld_instance->UnloadAllImages(); } + } } + } } - else - { - process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf("No ABI plugin located for triple %s -- shared libraries will not be registered!\n", process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); - } - - // Return true to stop the target, false to just let the target run - return dyld_instance->GetStopWhenImagesChange(); + } else { + process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf( + "No ABI plugin located for triple %s -- shared libraries will not be " + "registered!\n", + process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); + } + + // Return true to stop the target, false to just let the target run + return dyld_instance->GetStopWhenImagesChange(); } -void -DynamicLoaderMacOS::AddBinaries (const std::vector<lldb::addr_t> &load_addresses) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - ImageInfo::collection image_infos; - - if (log) - log->Printf ("Adding %" PRId64 " modules.", (uint64_t) load_addresses.size()); - StructuredData::ObjectSP binaries_info_sp = m_process->GetLoadedDynamicLibrariesInfos (load_addresses); - if (binaries_info_sp.get() - && binaries_info_sp->GetAsDictionary() - && binaries_info_sp->GetAsDictionary()->HasKey("images") - && binaries_info_sp->GetAsDictionary()->GetValueForKey("images")->GetAsArray() - && binaries_info_sp->GetAsDictionary()->GetValueForKey("images")->GetAsArray()->GetSize() == load_addresses.size()) - { - if (JSONImageInformationIntoImageInfo (binaries_info_sp, image_infos)) - { - UpdateSpecialBinariesFromNewImageInfos (image_infos); - AddModulesUsingImageInfos (image_infos); - } - m_dyld_image_infos_stop_id = m_process->GetStopID(); +void DynamicLoaderMacOS::AddBinaries( + const std::vector<lldb::addr_t> &load_addresses) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + ImageInfo::collection image_infos; + + if (log) + log->Printf("Adding %" PRId64 " modules.", (uint64_t)load_addresses.size()); + StructuredData::ObjectSP binaries_info_sp = + m_process->GetLoadedDynamicLibrariesInfos(load_addresses); + if (binaries_info_sp.get() && binaries_info_sp->GetAsDictionary() && + binaries_info_sp->GetAsDictionary()->HasKey("images") && + binaries_info_sp->GetAsDictionary() + ->GetValueForKey("images") + ->GetAsArray() && + binaries_info_sp->GetAsDictionary() + ->GetValueForKey("images") + ->GetAsArray() + ->GetSize() == load_addresses.size()) { + if (JSONImageInformationIntoImageInfo(binaries_info_sp, image_infos)) { + UpdateSpecialBinariesFromNewImageInfos(image_infos); + AddModulesUsingImageInfos(image_infos); } + m_dyld_image_infos_stop_id = m_process->GetStopID(); + } } - // Dump the _dyld_all_image_infos members and all current image infos // that we have parsed to the file handle provided. //---------------------------------------------------------------------- -void -DynamicLoaderMacOS::PutToLog(Log *log) const -{ - if (log == NULL) - return; +void DynamicLoaderMacOS::PutToLog(Log *log) const { + if (log == NULL) + return; } -bool -DynamicLoaderMacOS::SetNotificationBreakpoint () -{ - if (m_break_id == LLDB_INVALID_BREAK_ID) - { - ConstString g_symbol_name ("_dyld_debugger_notification"); - const Symbol *symbol = nullptr; - ModuleSP dyld_sp (GetDYLDModule()); - if (dyld_sp) - { - symbol = dyld_sp->FindFirstSymbolWithNameAndType (g_symbol_name, eSymbolTypeCode); - } - if (symbol && (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) - { - addr_t symbol_address = symbol->GetAddressRef().GetOpcodeLoadAddress(&m_process->GetTarget()); - if (symbol_address != LLDB_INVALID_ADDRESS) - { - bool internal = true; - bool hardware = false; - Breakpoint *breakpoint = m_process->GetTarget().CreateBreakpoint(symbol_address, internal, hardware).get(); - breakpoint->SetCallback (DynamicLoaderMacOS::NotifyBreakpointHit, this, true); - breakpoint->SetBreakpointKind ("shared-library-event"); - m_break_id = breakpoint->GetID(); - } - } +bool DynamicLoaderMacOS::SetNotificationBreakpoint() { + if (m_break_id == LLDB_INVALID_BREAK_ID) { + ConstString g_symbol_name("_dyld_debugger_notification"); + const Symbol *symbol = nullptr; + ModuleSP dyld_sp(GetDYLDModule()); + if (dyld_sp) { + symbol = dyld_sp->FindFirstSymbolWithNameAndType(g_symbol_name, + eSymbolTypeCode); } - return m_break_id != LLDB_INVALID_BREAK_ID; + if (symbol && + (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) { + addr_t symbol_address = + symbol->GetAddressRef().GetOpcodeLoadAddress(&m_process->GetTarget()); + if (symbol_address != LLDB_INVALID_ADDRESS) { + bool internal = true; + bool hardware = false; + Breakpoint *breakpoint = + m_process->GetTarget() + .CreateBreakpoint(symbol_address, internal, hardware) + .get(); + breakpoint->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, + true); + breakpoint->SetBreakpointKind("shared-library-event"); + m_break_id = breakpoint->GetID(); + } + } + } + return m_break_id != LLDB_INVALID_BREAK_ID; } - addr_t -DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule (Module *module) -{ - SymbolContext sc; - SymbolVendor *sym_vendor = module->GetSymbolVendor (); - Target &target = m_process->GetTarget (); - if (sym_vendor) - { - Symtab *symtab = sym_vendor->GetSymtab(); - if (symtab) - { - std::vector<uint32_t> match_indexes; - ConstString g_symbol_name ("_dyld_global_lock_held"); - uint32_t num_matches = 0; - num_matches = symtab->AppendSymbolIndexesWithName (g_symbol_name, match_indexes); - if (num_matches == 1) - { - Symbol *symbol = symtab->SymbolAtIndex (match_indexes[0]); - if (symbol && (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) - { - return symbol->GetAddressRef().GetOpcodeLoadAddress(&target); - } - } +DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule(Module *module) { + SymbolContext sc; + SymbolVendor *sym_vendor = module->GetSymbolVendor(); + Target &target = m_process->GetTarget(); + if (sym_vendor) { + Symtab *symtab = sym_vendor->GetSymtab(); + if (symtab) { + std::vector<uint32_t> match_indexes; + ConstString g_symbol_name("_dyld_global_lock_held"); + uint32_t num_matches = 0; + num_matches = + symtab->AppendSymbolIndexesWithName(g_symbol_name, match_indexes); + if (num_matches == 1) { + Symbol *symbol = symtab->SymbolAtIndex(match_indexes[0]); + if (symbol && + (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) { + return symbol->GetAddressRef().GetOpcodeLoadAddress(&target); } + } } - return LLDB_INVALID_ADDRESS; + } + return LLDB_INVALID_ADDRESS; } // Look for this symbol: // -// int __attribute__((visibility("hidden"))) _dyld_global_lock_held = 0; +// int __attribute__((visibility("hidden"))) _dyld_global_lock_held = +// 0; // // in libdyld.dylib. -Error -DynamicLoaderMacOS::CanLoadImage () -{ - Error error; - addr_t symbol_address = LLDB_INVALID_ADDRESS; - Target &target = m_process->GetTarget (); - const ModuleList &target_modules = target.GetImages(); - std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); - const size_t num_modules = target_modules.GetSize(); - ConstString g_libdyld_name ("libdyld.dylib"); - - // Find any modules named "libdyld.dylib" and look for the symbol there first - for (size_t i = 0; i < num_modules; i++) - { - Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked (i); - if (module_pointer) - { - if (module_pointer->GetFileSpec().GetFilename() == g_libdyld_name) - { - symbol_address = GetDyldLockVariableAddressFromModule (module_pointer); - if (symbol_address != LLDB_INVALID_ADDRESS) - break; - } - } +Error DynamicLoaderMacOS::CanLoadImage() { + Error error; + addr_t symbol_address = LLDB_INVALID_ADDRESS; + Target &target = m_process->GetTarget(); + const ModuleList &target_modules = target.GetImages(); + std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); + const size_t num_modules = target_modules.GetSize(); + ConstString g_libdyld_name("libdyld.dylib"); + + // Find any modules named "libdyld.dylib" and look for the symbol there first + for (size_t i = 0; i < num_modules; i++) { + Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked(i); + if (module_pointer) { + if (module_pointer->GetFileSpec().GetFilename() == g_libdyld_name) { + symbol_address = GetDyldLockVariableAddressFromModule(module_pointer); + if (symbol_address != LLDB_INVALID_ADDRESS) + break; + } } - - // Search through all modules looking for the symbol in them - if (symbol_address == LLDB_INVALID_ADDRESS) - { - for (size_t i = 0; i < num_modules; i++) - { - Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked (i); - if (module_pointer) - { - addr_t symbol_address = GetDyldLockVariableAddressFromModule (module_pointer); - if (symbol_address != LLDB_INVALID_ADDRESS) - break; - } - } + } + + // Search through all modules looking for the symbol in them + if (symbol_address == LLDB_INVALID_ADDRESS) { + for (size_t i = 0; i < num_modules; i++) { + Module *module_pointer = + target_modules.GetModulePointerAtIndexUnlocked(i); + if (module_pointer) { + addr_t symbol_address = + GetDyldLockVariableAddressFromModule(module_pointer); + if (symbol_address != LLDB_INVALID_ADDRESS) + break; + } } + } - // Default assumption is that it is OK to load images. - // Only say that we cannot load images if we find the symbol in libdyld and it indicates that - // we cannot. + // Default assumption is that it is OK to load images. + // Only say that we cannot load images if we find the symbol in libdyld and it + // indicates that + // we cannot. - if (symbol_address != LLDB_INVALID_ADDRESS) - { - { - int lock_held = m_process->ReadUnsignedIntegerFromMemory (symbol_address, 4, 0, error); - if (lock_held != 0) - { - error.SetErrorToGenericError(); - } - } - } - else + if (symbol_address != LLDB_INVALID_ADDRESS) { { - // If we were unable to find _dyld_global_lock_held in any modules, or it is not loaded into - // memory yet, we may be at process startup (sitting at _dyld_start) - so we should not allow - // dlopen calls. + int lock_held = + m_process->ReadUnsignedIntegerFromMemory(symbol_address, 4, 0, error); + if (lock_held != 0) { error.SetErrorToGenericError(); + } } - return error; + } else { + // If we were unable to find _dyld_global_lock_held in any modules, or it is + // not loaded into + // memory yet, we may be at process startup (sitting at _dyld_start) - so we + // should not allow + // dlopen calls. + error.SetErrorToGenericError(); + } + return error; } -bool -DynamicLoaderMacOS::GetSharedCacheInformation (lldb::addr_t &base_address, - UUID &uuid, - LazyBool &using_shared_cache, - LazyBool &private_shared_cache) -{ - base_address = LLDB_INVALID_ADDRESS; - uuid.Clear(); - using_shared_cache = eLazyBoolCalculate; - private_shared_cache = eLazyBoolCalculate; - - if (m_process) - { - StructuredData::ObjectSP info = m_process->GetSharedCacheInfo(); - StructuredData::Dictionary *info_dict = nullptr; - if (info.get() && info->GetAsDictionary()) - { - info_dict = info->GetAsDictionary(); - } +bool DynamicLoaderMacOS::GetSharedCacheInformation( + lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache, + LazyBool &private_shared_cache) { + base_address = LLDB_INVALID_ADDRESS; + uuid.Clear(); + using_shared_cache = eLazyBoolCalculate; + private_shared_cache = eLazyBoolCalculate; + + if (m_process) { + StructuredData::ObjectSP info = m_process->GetSharedCacheInfo(); + StructuredData::Dictionary *info_dict = nullptr; + if (info.get() && info->GetAsDictionary()) { + info_dict = info->GetAsDictionary(); + } - // {"shared_cache_base_address":140735683125248,"shared_cache_uuid":"DDB8D70C-C9A2-3561-B2C8-BE48A4F33F96","no_shared_cache":false,"shared_cache_private_cache":false} - - if (info_dict - && info_dict->HasKey("shared_cache_uuid") - && info_dict->HasKey("no_shared_cache") - && info_dict->HasKey("shared_cache_base_address")) - { - base_address = info_dict->GetValueForKey("shared_cache_base_address")->GetIntegerValue(LLDB_INVALID_ADDRESS); - std::string uuid_str = info_dict->GetValueForKey("shared_cache_uuid")->GetStringValue().c_str(); - if (!uuid_str.empty()) - uuid.SetFromCString (uuid_str.c_str()); - if (info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue() == false) - using_shared_cache = eLazyBoolYes; - else - using_shared_cache = eLazyBoolNo; - if (info_dict->GetValueForKey("shared_cache_private_cache")->GetBooleanValue()) - private_shared_cache = eLazyBoolYes; - else - private_shared_cache = eLazyBoolNo; - - return true; - } + // {"shared_cache_base_address":140735683125248,"shared_cache_uuid":"DDB8D70C-C9A2-3561-B2C8-BE48A4F33F96","no_shared_cache":false,"shared_cache_private_cache":false} + + if (info_dict && info_dict->HasKey("shared_cache_uuid") && + info_dict->HasKey("no_shared_cache") && + info_dict->HasKey("shared_cache_base_address")) { + base_address = info_dict->GetValueForKey("shared_cache_base_address") + ->GetIntegerValue(LLDB_INVALID_ADDRESS); + std::string uuid_str = info_dict->GetValueForKey("shared_cache_uuid") + ->GetStringValue() + .c_str(); + if (!uuid_str.empty()) + uuid.SetFromCString(uuid_str.c_str()); + if (info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue() == + false) + using_shared_cache = eLazyBoolYes; + else + using_shared_cache = eLazyBoolNo; + if (info_dict->GetValueForKey("shared_cache_private_cache") + ->GetBooleanValue()) + private_shared_cache = eLazyBoolYes; + else + private_shared_cache = eLazyBoolNo; + + return true; } - return false; + } + return false; } -void -DynamicLoaderMacOS::Initialize() -{ - PluginManager::RegisterPlugin (GetPluginNameStatic(), - GetPluginDescriptionStatic(), - CreateInstance); +void DynamicLoaderMacOS::Initialize() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), CreateInstance); } -void -DynamicLoaderMacOS::Terminate() -{ - PluginManager::UnregisterPlugin (CreateInstance); +void DynamicLoaderMacOS::Terminate() { + PluginManager::UnregisterPlugin(CreateInstance); } - -lldb_private::ConstString -DynamicLoaderMacOS::GetPluginNameStatic() -{ - static ConstString g_name("macos-dyld"); - return g_name; +lldb_private::ConstString DynamicLoaderMacOS::GetPluginNameStatic() { + static ConstString g_name("macos-dyld"); + return g_name; } -const char * -DynamicLoaderMacOS::GetPluginDescriptionStatic() -{ - return "Dynamic loader plug-in that watches for shared library loads/unloads in MacOSX user processes."; +const char *DynamicLoaderMacOS::GetPluginDescriptionStatic() { + return "Dynamic loader plug-in that watches for shared library loads/unloads " + "in MacOSX user processes."; } - //------------------------------------------------------------------ // PluginInterface protocol //------------------------------------------------------------------ -lldb_private::ConstString -DynamicLoaderMacOS::GetPluginName() -{ - return GetPluginNameStatic(); +lldb_private::ConstString DynamicLoaderMacOS::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -DynamicLoaderMacOS::GetPluginVersion() -{ - return 1; -} +uint32_t DynamicLoaderMacOS::GetPluginVersion() { return 1; } |