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Diffstat (limited to 'source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp')
| -rw-r--r-- | source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp b/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp new file mode 100644 index 000000000000..274ba328ad1f --- /dev/null +++ b/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp @@ -0,0 +1,209 @@ +//===-- DynamicLoaderStatic.cpp ---------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "lldb/Core/Module.h" +#include "lldb/Core/PluginManager.h" +#include "lldb/Core/Section.h" +#include "lldb/Symbol/ObjectFile.h" +#include "lldb/Target/Target.h" + +#include "DynamicLoaderStatic.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 * +DynamicLoaderStatic::CreateInstance (Process* process, bool force) +{ + bool create = force; + if (!create) + { + const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); + const llvm::Triple::OSType os_type = triple_ref.getOS(); + if ((os_type == llvm::Triple::UnknownOS)) + create = true; + } + + if (!create) + { + Module *exe_module = process->GetTarget().GetExecutableModulePointer(); + if (exe_module) + { + ObjectFile *object_file = exe_module->GetObjectFile(); + if (object_file) + { + create = (object_file->GetStrata() == ObjectFile::eStrataRawImage); + } + } + } + + if (create) + return new DynamicLoaderStatic (process); + return NULL; +} + +//---------------------------------------------------------------------- +// Constructor +//---------------------------------------------------------------------- +DynamicLoaderStatic::DynamicLoaderStatic (Process* process) : + DynamicLoader(process) +{ +} + +//---------------------------------------------------------------------- +// Destructor +//---------------------------------------------------------------------- +DynamicLoaderStatic::~DynamicLoaderStatic() +{ +} + +//------------------------------------------------------------------ +/// Called after attaching a process. +/// +/// Allow DynamicLoader plug-ins to execute some code after +/// attaching to a process. +//------------------------------------------------------------------ +void +DynamicLoaderStatic::DidAttach () +{ + LoadAllImagesAtFileAddresses(); +} + +//------------------------------------------------------------------ +/// Called after attaching a process. +/// +/// Allow DynamicLoader plug-ins to execute some code after +/// attaching to a process. +//------------------------------------------------------------------ +void +DynamicLoaderStatic::DidLaunch () +{ + LoadAllImagesAtFileAddresses(); +} + +void +DynamicLoaderStatic::LoadAllImagesAtFileAddresses () +{ + const ModuleList &module_list = m_process->GetTarget().GetImages(); + + ModuleList loaded_module_list; + + // Disable JIT for static dynamic loader targets + m_process->SetCanJIT(false); + + Mutex::Locker mutex_locker(module_list.GetMutex()); + + const size_t num_modules = module_list.GetSize(); + for (uint32_t idx = 0; idx < num_modules; ++idx) + { + ModuleSP module_sp (module_list.GetModuleAtIndexUnlocked (idx)); + if (module_sp) + { + bool changed = false; + ObjectFile *image_object_file = module_sp->GetObjectFile(); + if (image_object_file) + { + SectionList *section_list = image_object_file->GetSectionList (); + if (section_list) + { + // All sections listed in the dyld image info structure will all + // either be fixed up already, or they will all be off by a single + // slide amount that is determined by finding the first segment + // that is at file offset zero which also has bytes (a file size + // that is greater than zero) in the object file. + + // Determine the slide amount (if any) + const size_t num_sections = section_list->GetSize(); + size_t sect_idx = 0; + for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) + { + // Iterate through the object file sections to find the + // first section that starts of file offset zero and that + // has bytes in the file... + SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); + if (section_sp) + { + if (m_process->GetTarget().GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress())) + changed = true; + } + } + } + } + + if (changed) + loaded_module_list.AppendIfNeeded (module_sp); + } + } + + m_process->GetTarget().ModulesDidLoad (loaded_module_list); +} + +ThreadPlanSP +DynamicLoaderStatic::GetStepThroughTrampolinePlan (Thread &thread, bool stop_others) +{ + return ThreadPlanSP(); +} + +Error +DynamicLoaderStatic::CanLoadImage () +{ + Error error; + error.SetErrorString ("can't load images on with a static debug session"); + return error; +} + +void +DynamicLoaderStatic::Initialize() +{ + PluginManager::RegisterPlugin (GetPluginNameStatic(), + GetPluginDescriptionStatic(), + CreateInstance); +} + +void +DynamicLoaderStatic::Terminate() +{ + PluginManager::UnregisterPlugin (CreateInstance); +} + + +lldb_private::ConstString +DynamicLoaderStatic::GetPluginNameStatic() +{ + static ConstString g_name("static"); + return g_name; +} + +const char * +DynamicLoaderStatic::GetPluginDescriptionStatic() +{ + return "Dynamic loader plug-in that will load any images at the static addresses contained in each image."; +} + + +//------------------------------------------------------------------ +// PluginInterface protocol +//------------------------------------------------------------------ +lldb_private::ConstString +DynamicLoaderStatic::GetPluginName() +{ + return GetPluginNameStatic(); +} + +uint32_t +DynamicLoaderStatic::GetPluginVersion() +{ + return 1; +} + |