forked from OSchip/llvm-project
				
			
		
			
				
	
	
		
			696 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			696 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			C++
		
	
	
	
| //===-- ObjectFile.cpp ------------------------------------------*- 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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| 
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| #include "lldb/Symbol/ObjectFile.h"
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| #include "Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.h"
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| #include "lldb/Core/Module.h"
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| #include "lldb/Core/ModuleSpec.h"
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| #include "lldb/Core/PluginManager.h"
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| #include "lldb/Core/Section.h"
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| #include "lldb/Symbol/ObjectContainer.h"
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| #include "lldb/Symbol/SymbolFile.h"
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| #include "lldb/Target/Process.h"
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| #include "lldb/Target/RegisterContext.h"
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| #include "lldb/Target/SectionLoadList.h"
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| #include "lldb/Target/Target.h"
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| #include "lldb/Utility/DataBuffer.h"
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| #include "lldb/Utility/DataBufferHeap.h"
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| #include "lldb/Utility/DataBufferLLVM.h"
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| #include "lldb/Utility/Log.h"
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| #include "lldb/Utility/RegularExpression.h"
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| #include "lldb/Utility/Timer.h"
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| #include "lldb/lldb-private.h"
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| 
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| using namespace lldb;
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| using namespace lldb_private;
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| 
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| ObjectFileSP
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| ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file,
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|                        lldb::offset_t file_offset, lldb::offset_t file_size,
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|                        DataBufferSP &data_sp, lldb::offset_t &data_offset) {
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|   ObjectFileSP object_file_sp;
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| 
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|   if (module_sp) {
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|     static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
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|     Timer scoped_timer(
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|         func_cat,
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|         "ObjectFile::FindPlugin (module = %s, file = %p, file_offset = "
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|         "0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")",
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|         module_sp->GetFileSpec().GetPath().c_str(),
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|         static_cast<const void *>(file), static_cast<uint64_t>(file_offset),
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|         static_cast<uint64_t>(file_size));
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|     if (file) {
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|       FileSpec archive_file;
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|       ObjectContainerCreateInstance create_object_container_callback;
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| 
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|       const bool file_exists = file->Exists();
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|       if (!data_sp) {
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|         // We have an object name which most likely means we have
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|         // a .o file in a static archive (.a file). Try and see if
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|         // we have a cached archive first without reading any data
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|         // first
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|         if (file_exists && module_sp->GetObjectName()) {
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|           for (uint32_t idx = 0;
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|                (create_object_container_callback =
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|                     PluginManager::GetObjectContainerCreateCallbackAtIndex(
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|                         idx)) != nullptr;
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|                ++idx) {
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|             std::unique_ptr<ObjectContainer> object_container_ap(
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|                 create_object_container_callback(module_sp, data_sp,
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|                                                  data_offset, file, file_offset,
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|                                                  file_size));
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| 
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|             if (object_container_ap.get())
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|               object_file_sp = object_container_ap->GetObjectFile(file);
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| 
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|             if (object_file_sp.get())
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|               return object_file_sp;
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|           }
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|         }
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|         // Ok, we didn't find any containers that have a named object, now
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|         // lets read the first 512 bytes from the file so the object file
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|         // and object container plug-ins can use these bytes to see if they
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|         // can parse this file.
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|         if (file_size > 0) {
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|           data_sp =
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|               DataBufferLLVM::CreateSliceFromPath(file->GetPath(), 512, file_offset);
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|           data_offset = 0;
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|         }
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|       }
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| 
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|       if (!data_sp || data_sp->GetByteSize() == 0) {
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|         // Check for archive file with format "/path/to/archive.a(object.o)"
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|         char path_with_object[PATH_MAX * 2];
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|         module_sp->GetFileSpec().GetPath(path_with_object,
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|                                          sizeof(path_with_object));
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| 
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|         ConstString archive_object;
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|         const bool must_exist = true;
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|         if (ObjectFile::SplitArchivePathWithObject(
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|                 path_with_object, archive_file, archive_object, must_exist)) {
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|           file_size = archive_file.GetByteSize();
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|           if (file_size > 0) {
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|             file = &archive_file;
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|             module_sp->SetFileSpecAndObjectName(archive_file, archive_object);
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|             // Check if this is a object container by iterating through all
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|             // object
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|             // container plugin instances and then trying to get an object file
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|             // from the container plugins since we had a name. Also, don't read
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|             // ANY data in case there is data cached in the container plug-ins
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|             // (like BSD archives caching the contained objects within an file).
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|             for (uint32_t idx = 0;
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|                  (create_object_container_callback =
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|                       PluginManager::GetObjectContainerCreateCallbackAtIndex(
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|                           idx)) != nullptr;
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|                  ++idx) {
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|               std::unique_ptr<ObjectContainer> object_container_ap(
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|                   create_object_container_callback(module_sp, data_sp,
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|                                                    data_offset, file,
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|                                                    file_offset, file_size));
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| 
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|               if (object_container_ap.get())
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|                 object_file_sp = object_container_ap->GetObjectFile(file);
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| 
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|               if (object_file_sp.get())
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|                 return object_file_sp;
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|             }
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|             // We failed to find any cached object files in the container
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|             // plug-ins, so lets read the first 512 bytes and try again below...
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|             data_sp = DataBufferLLVM::CreateSliceFromPath(archive_file.GetPath(),
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|                                                      512, file_offset);
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|           }
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|         }
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|       }
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| 
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|       if (data_sp && data_sp->GetByteSize() > 0) {
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|         // Check if this is a normal object file by iterating through
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|         // all object file plugin instances.
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|         ObjectFileCreateInstance create_object_file_callback;
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|         for (uint32_t idx = 0;
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|              (create_object_file_callback =
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|                   PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) !=
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|              nullptr;
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|              ++idx) {
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|           object_file_sp.reset(create_object_file_callback(
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|               module_sp, data_sp, data_offset, file, file_offset, file_size));
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|           if (object_file_sp.get())
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|             return object_file_sp;
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|         }
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| 
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|         // Check if this is a object container by iterating through
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|         // all object container plugin instances and then trying to get
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|         // an object file from the container.
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|         for (uint32_t idx = 0;
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|              (create_object_container_callback =
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|                   PluginManager::GetObjectContainerCreateCallbackAtIndex(
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|                       idx)) != nullptr;
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|              ++idx) {
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|           std::unique_ptr<ObjectContainer> object_container_ap(
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|               create_object_container_callback(module_sp, data_sp, data_offset,
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|                                                file, file_offset, file_size));
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| 
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|           if (object_container_ap.get())
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|             object_file_sp = object_container_ap->GetObjectFile(file);
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| 
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|           if (object_file_sp.get())
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|             return object_file_sp;
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|         }
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|       }
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|     }
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|   }
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|   // We didn't find it, so clear our shared pointer in case it
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|   // contains anything and return an empty shared pointer
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|   object_file_sp.reset();
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|   return object_file_sp;
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| }
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| 
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| ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp,
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|                                     const ProcessSP &process_sp,
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|                                     lldb::addr_t header_addr,
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|                                     DataBufferSP &data_sp) {
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|   ObjectFileSP object_file_sp;
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| 
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|   if (module_sp) {
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|     static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
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|     Timer scoped_timer(func_cat,
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|                        "ObjectFile::FindPlugin (module = "
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|                        "%s, process = %p, header_addr = "
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|                        "0x%" PRIx64 ")",
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|                        module_sp->GetFileSpec().GetPath().c_str(),
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|                        static_cast<void *>(process_sp.get()), header_addr);
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|     uint32_t idx;
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| 
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|     // Check if this is a normal object file by iterating through
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|     // all object file plugin instances.
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|     ObjectFileCreateMemoryInstance create_callback;
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|     for (idx = 0;
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|          (create_callback =
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|               PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) !=
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|          nullptr;
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|          ++idx) {
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|       object_file_sp.reset(
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|           create_callback(module_sp, data_sp, process_sp, header_addr));
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|       if (object_file_sp.get())
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|         return object_file_sp;
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|     }
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|   }
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| 
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|   // We didn't find it, so clear our shared pointer in case it
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|   // contains anything and return an empty shared pointer
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|   object_file_sp.reset();
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|   return object_file_sp;
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| }
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| 
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| size_t ObjectFile::GetModuleSpecifications(const FileSpec &file,
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|                                            lldb::offset_t file_offset,
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|                                            lldb::offset_t file_size,
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|                                            ModuleSpecList &specs) {
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|   DataBufferSP data_sp = DataBufferLLVM::CreateSliceFromPath(file.GetPath(), 512, file_offset);
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|   if (data_sp) {
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|     if (file_size == 0) {
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|       const lldb::offset_t actual_file_size = file.GetByteSize();
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|       if (actual_file_size > file_offset)
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|         file_size = actual_file_size - file_offset;
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|     }
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|     return ObjectFile::GetModuleSpecifications(file,        // file spec
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|                                                data_sp,     // data bytes
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|                                                0,           // data offset
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|                                                file_offset, // file offset
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|                                                file_size,   // file length
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|                                                specs);
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|   }
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|   return 0;
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| }
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| 
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| size_t ObjectFile::GetModuleSpecifications(
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|     const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp,
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|     lldb::offset_t data_offset, lldb::offset_t file_offset,
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|     lldb::offset_t file_size, lldb_private::ModuleSpecList &specs) {
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|   const size_t initial_count = specs.GetSize();
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|   ObjectFileGetModuleSpecifications callback;
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|   uint32_t i;
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|   // Try the ObjectFile plug-ins
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|   for (i = 0;
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|        (callback =
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|             PluginManager::GetObjectFileGetModuleSpecificationsCallbackAtIndex(
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|                 i)) != nullptr;
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|        ++i) {
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|     if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0)
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|       return specs.GetSize() - initial_count;
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|   }
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| 
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|   // Try the ObjectContainer plug-ins
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|   for (i = 0;
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|        (callback = PluginManager::
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|             GetObjectContainerGetModuleSpecificationsCallbackAtIndex(i)) !=
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|        nullptr;
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|        ++i) {
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|     if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0)
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|       return specs.GetSize() - initial_count;
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|   }
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|   return 0;
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| }
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| 
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| ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp,
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|                        const FileSpec *file_spec_ptr,
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|                        lldb::offset_t file_offset, lldb::offset_t length,
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|                        const lldb::DataBufferSP &data_sp,
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|                        lldb::offset_t data_offset)
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|     : ModuleChild(module_sp),
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|       m_file(), // This file could be different from the original module's file
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|       m_type(eTypeInvalid), m_strata(eStrataInvalid),
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|       m_file_offset(file_offset), m_length(length), m_data(),
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|       m_unwind_table(*this), m_process_wp(),
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|       m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_ap(), m_symtab_ap(),
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|       m_synthetic_symbol_idx(0) {
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|   if (file_spec_ptr)
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|     m_file = *file_spec_ptr;
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|   if (data_sp)
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|     m_data.SetData(data_sp, data_offset, length);
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|   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
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|   if (log)
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|     log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), file = %s, "
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|                 "file_offset = 0x%8.8" PRIx64 ", size = %" PRIu64,
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|                 static_cast<void *>(this), static_cast<void *>(module_sp.get()),
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|                 module_sp->GetSpecificationDescription().c_str(),
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|                 m_file ? m_file.GetPath().c_str() : "<NULL>", m_file_offset,
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|                 m_length);
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| }
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| 
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| ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp,
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|                        const ProcessSP &process_sp, lldb::addr_t header_addr,
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|                        DataBufferSP &header_data_sp)
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|     : ModuleChild(module_sp), m_file(), m_type(eTypeInvalid),
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|       m_strata(eStrataInvalid), m_file_offset(0), m_length(0), m_data(),
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|       m_unwind_table(*this), m_process_wp(process_sp),
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|       m_memory_addr(header_addr), m_sections_ap(), m_symtab_ap(),
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|       m_synthetic_symbol_idx(0) {
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|   if (header_data_sp)
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|     m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize());
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|   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
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|   if (log)
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|     log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), process = %p, "
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|                 "header_addr = 0x%" PRIx64,
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|                 static_cast<void *>(this), static_cast<void *>(module_sp.get()),
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|                 module_sp->GetSpecificationDescription().c_str(),
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|                 static_cast<void *>(process_sp.get()), m_memory_addr);
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| }
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| 
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| ObjectFile::~ObjectFile() {
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|   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
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|   if (log)
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|     log->Printf("%p ObjectFile::~ObjectFile ()\n", static_cast<void *>(this));
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| }
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| 
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| bool ObjectFile::SetModulesArchitecture(const ArchSpec &new_arch) {
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|   ModuleSP module_sp(GetModule());
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|   if (module_sp)
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|     return module_sp->SetArchitecture(new_arch);
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|   return false;
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| }
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| 
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| AddressClass ObjectFile::GetAddressClass(addr_t file_addr) {
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|   Symtab *symtab = GetSymtab();
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|   if (symtab) {
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|     Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr);
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|     if (symbol) {
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|       if (symbol->ValueIsAddress()) {
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|         const SectionSP section_sp(symbol->GetAddressRef().GetSection());
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|         if (section_sp) {
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|           const SectionType section_type = section_sp->GetType();
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|           switch (section_type) {
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|           case eSectionTypeInvalid:
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|             return eAddressClassUnknown;
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|           case eSectionTypeCode:
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|             return eAddressClassCode;
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|           case eSectionTypeContainer:
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|             return eAddressClassUnknown;
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|           case eSectionTypeData:
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|           case eSectionTypeDataCString:
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|           case eSectionTypeDataCStringPointers:
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|           case eSectionTypeDataSymbolAddress:
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|           case eSectionTypeData4:
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|           case eSectionTypeData8:
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|           case eSectionTypeData16:
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|           case eSectionTypeDataPointers:
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|           case eSectionTypeZeroFill:
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|           case eSectionTypeDataObjCMessageRefs:
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|           case eSectionTypeDataObjCCFStrings:
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|           case eSectionTypeGoSymtab:
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|             return eAddressClassData;
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|           case eSectionTypeDebug:
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|           case eSectionTypeDWARFDebugAbbrev:
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|           case eSectionTypeDWARFDebugAddr:
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|           case eSectionTypeDWARFDebugAranges:
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|           case eSectionTypeDWARFDebugFrame:
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|           case eSectionTypeDWARFDebugInfo:
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|           case eSectionTypeDWARFDebugLine:
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|           case eSectionTypeDWARFDebugLoc:
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|           case eSectionTypeDWARFDebugMacInfo:
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|           case eSectionTypeDWARFDebugMacro:
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|           case eSectionTypeDWARFDebugPubNames:
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|           case eSectionTypeDWARFDebugPubTypes:
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|           case eSectionTypeDWARFDebugRanges:
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|           case eSectionTypeDWARFDebugStr:
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|           case eSectionTypeDWARFDebugStrOffsets:
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|           case eSectionTypeDWARFAppleNames:
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|           case eSectionTypeDWARFAppleTypes:
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|           case eSectionTypeDWARFAppleNamespaces:
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|           case eSectionTypeDWARFAppleObjC:
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|             return eAddressClassDebug;
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|           case eSectionTypeEHFrame:
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|           case eSectionTypeARMexidx:
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|           case eSectionTypeARMextab:
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|           case eSectionTypeCompactUnwind:
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|             return eAddressClassRuntime;
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|           case eSectionTypeELFSymbolTable:
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|           case eSectionTypeELFDynamicSymbols:
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|           case eSectionTypeELFRelocationEntries:
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|           case eSectionTypeELFDynamicLinkInfo:
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|           case eSectionTypeOther:
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|             return eAddressClassUnknown;
 | |
|           case eSectionTypeAbsoluteAddress:
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|             // In case of absolute sections decide the address class based on
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|             // the symbol
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|             // type because the section type isn't specify if it is a code or a
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|             // data
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|             // section.
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|             break;
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|           }
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|         }
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|       }
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| 
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|       const SymbolType symbol_type = symbol->GetType();
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|       switch (symbol_type) {
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|       case eSymbolTypeAny:
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|         return eAddressClassUnknown;
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|       case eSymbolTypeAbsolute:
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|         return eAddressClassUnknown;
 | |
|       case eSymbolTypeCode:
 | |
|         return eAddressClassCode;
 | |
|       case eSymbolTypeTrampoline:
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|         return eAddressClassCode;
 | |
|       case eSymbolTypeResolver:
 | |
|         return eAddressClassCode;
 | |
|       case eSymbolTypeData:
 | |
|         return eAddressClassData;
 | |
|       case eSymbolTypeRuntime:
 | |
|         return eAddressClassRuntime;
 | |
|       case eSymbolTypeException:
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|         return eAddressClassRuntime;
 | |
|       case eSymbolTypeSourceFile:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeHeaderFile:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeObjectFile:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeCommonBlock:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeBlock:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeLocal:
 | |
|         return eAddressClassData;
 | |
|       case eSymbolTypeParam:
 | |
|         return eAddressClassData;
 | |
|       case eSymbolTypeVariable:
 | |
|         return eAddressClassData;
 | |
|       case eSymbolTypeVariableType:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeLineEntry:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeLineHeader:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeScopeBegin:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeScopeEnd:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeAdditional:
 | |
|         return eAddressClassUnknown;
 | |
|       case eSymbolTypeCompiler:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeInstrumentation:
 | |
|         return eAddressClassDebug;
 | |
|       case eSymbolTypeUndefined:
 | |
|         return eAddressClassUnknown;
 | |
|       case eSymbolTypeObjCClass:
 | |
|         return eAddressClassRuntime;
 | |
|       case eSymbolTypeObjCMetaClass:
 | |
|         return eAddressClassRuntime;
 | |
|       case eSymbolTypeObjCIVar:
 | |
|         return eAddressClassRuntime;
 | |
|       case eSymbolTypeReExported:
 | |
|         return eAddressClassRuntime;
 | |
|       }
 | |
|     }
 | |
|   }
 | |
|   return eAddressClassUnknown;
 | |
| }
 | |
| 
 | |
| DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp,
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|                                     lldb::addr_t addr, size_t byte_size) {
 | |
|   DataBufferSP data_sp;
 | |
|   if (process_sp) {
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|     std::unique_ptr<DataBufferHeap> data_ap(new DataBufferHeap(byte_size, 0));
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|     Status error;
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|     const size_t bytes_read = process_sp->ReadMemory(
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|         addr, data_ap->GetBytes(), data_ap->GetByteSize(), error);
 | |
|     if (bytes_read == byte_size)
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|       data_sp.reset(data_ap.release());
 | |
|   }
 | |
|   return data_sp;
 | |
| }
 | |
| 
 | |
| size_t ObjectFile::GetData(lldb::offset_t offset, size_t length,
 | |
|                            DataExtractor &data) const {
 | |
|   // The entire file has already been mmap'ed into m_data, so just copy from
 | |
|   // there
 | |
|   // as the back mmap buffer will be shared with shared pointers.
 | |
|   return data.SetData(m_data, offset, length);
 | |
| }
 | |
| 
 | |
| size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length,
 | |
|                             void *dst) const {
 | |
|   // The entire file has already been mmap'ed into m_data, so just copy from
 | |
|   // there
 | |
|   // Note that the data remains in target byte order.
 | |
|   return m_data.CopyData(offset, length, dst);
 | |
| }
 | |
| 
 | |
| size_t ObjectFile::ReadSectionData(const Section *section,
 | |
|                                    lldb::offset_t section_offset, void *dst,
 | |
|                                    size_t dst_len) const {
 | |
|   assert(section);
 | |
|   section_offset *= section->GetTargetByteSize();
 | |
| 
 | |
|   // If some other objectfile owns this data, pass this to them.
 | |
|   if (section->GetObjectFile() != this)
 | |
|     return section->GetObjectFile()->ReadSectionData(section, section_offset,
 | |
|                                                      dst, dst_len);
 | |
| 
 | |
|   if (IsInMemory()) {
 | |
|     ProcessSP process_sp(m_process_wp.lock());
 | |
|     if (process_sp) {
 | |
|       Status error;
 | |
|       const addr_t base_load_addr =
 | |
|           section->GetLoadBaseAddress(&process_sp->GetTarget());
 | |
|       if (base_load_addr != LLDB_INVALID_ADDRESS)
 | |
|         return process_sp->ReadMemory(base_load_addr + section_offset, dst,
 | |
|                                       dst_len, error);
 | |
|     }
 | |
|   } else {
 | |
|     const lldb::offset_t section_file_size = section->GetFileSize();
 | |
|     if (section_offset < section_file_size) {
 | |
|       const size_t section_bytes_left = section_file_size - section_offset;
 | |
|       size_t section_dst_len = dst_len;
 | |
|       if (section_dst_len > section_bytes_left)
 | |
|         section_dst_len = section_bytes_left;
 | |
|       return CopyData(section->GetFileOffset() + section_offset,
 | |
|                       section_dst_len, dst);
 | |
|     } else {
 | |
|       if (section->GetType() == eSectionTypeZeroFill) {
 | |
|         const uint64_t section_size = section->GetByteSize();
 | |
|         const uint64_t section_bytes_left = section_size - section_offset;
 | |
|         uint64_t section_dst_len = dst_len;
 | |
|         if (section_dst_len > section_bytes_left)
 | |
|           section_dst_len = section_bytes_left;
 | |
|         memset(dst, 0, section_dst_len);
 | |
|         return section_dst_len;
 | |
|       }
 | |
|     }
 | |
|   }
 | |
|   return 0;
 | |
| }
 | |
| 
 | |
| //----------------------------------------------------------------------
 | |
| // Get the section data the file on disk
 | |
| //----------------------------------------------------------------------
 | |
| size_t ObjectFile::ReadSectionData(const Section *section,
 | |
|                                    DataExtractor §ion_data) const {
 | |
|   // If some other objectfile owns this data, pass this to them.
 | |
|   if (section->GetObjectFile() != this)
 | |
|     return section->GetObjectFile()->ReadSectionData(section, section_data);
 | |
| 
 | |
|   if (IsInMemory()) {
 | |
|     ProcessSP process_sp(m_process_wp.lock());
 | |
|     if (process_sp) {
 | |
|       const addr_t base_load_addr =
 | |
|           section->GetLoadBaseAddress(&process_sp->GetTarget());
 | |
|       if (base_load_addr != LLDB_INVALID_ADDRESS) {
 | |
|         DataBufferSP data_sp(
 | |
|             ReadMemory(process_sp, base_load_addr, section->GetByteSize()));
 | |
|         if (data_sp) {
 | |
|           section_data.SetData(data_sp, 0, data_sp->GetByteSize());
 | |
|           section_data.SetByteOrder(process_sp->GetByteOrder());
 | |
|           section_data.SetAddressByteSize(process_sp->GetAddressByteSize());
 | |
|           return section_data.GetByteSize();
 | |
|         }
 | |
|       }
 | |
|     }
 | |
|     return GetData(section->GetFileOffset(), section->GetFileSize(),
 | |
|                    section_data);
 | |
|   } else {
 | |
|     // The object file now contains a full mmap'ed copy of the object file data,
 | |
|     // so just use this
 | |
|     return MemoryMapSectionData(section, section_data);
 | |
|   }
 | |
| }
 | |
| 
 | |
| size_t ObjectFile::MemoryMapSectionData(const Section *section,
 | |
|                                         DataExtractor §ion_data) const {
 | |
|   // If some other objectfile owns this data, pass this to them.
 | |
|   if (section->GetObjectFile() != this)
 | |
|     return section->GetObjectFile()->MemoryMapSectionData(section,
 | |
|                                                           section_data);
 | |
| 
 | |
|   if (IsInMemory()) {
 | |
|     return ReadSectionData(section, section_data);
 | |
|   } else {
 | |
|     // The object file now contains a full mmap'ed copy of the object file data,
 | |
|     // so just use this
 | |
|     return GetData(section->GetFileOffset(), section->GetFileSize(),
 | |
|                    section_data);
 | |
|   }
 | |
| }
 | |
| 
 | |
| bool ObjectFile::SplitArchivePathWithObject(const char *path_with_object,
 | |
|                                             FileSpec &archive_file,
 | |
|                                             ConstString &archive_object,
 | |
|                                             bool must_exist) {
 | |
|   RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$"));
 | |
|   RegularExpression::Match regex_match(2);
 | |
|   if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object),
 | |
|                              ®ex_match)) {
 | |
|     std::string path;
 | |
|     std::string obj;
 | |
|     if (regex_match.GetMatchAtIndex(path_with_object, 1, path) &&
 | |
|         regex_match.GetMatchAtIndex(path_with_object, 2, obj)) {
 | |
|       archive_file.SetFile(path, false);
 | |
|       archive_object.SetCString(obj.c_str());
 | |
|       if (must_exist && !archive_file.Exists())
 | |
|         return false;
 | |
|       return true;
 | |
|     }
 | |
|   }
 | |
|   return false;
 | |
| }
 | |
| 
 | |
| void ObjectFile::ClearSymtab() {
 | |
|   ModuleSP module_sp(GetModule());
 | |
|   if (module_sp) {
 | |
|     std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
 | |
|     Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
 | |
|     if (log)
 | |
|       log->Printf("%p ObjectFile::ClearSymtab () symtab = %p",
 | |
|                   static_cast<void *>(this),
 | |
|                   static_cast<void *>(m_symtab_ap.get()));
 | |
|     m_symtab_ap.reset();
 | |
|   }
 | |
| }
 | |
| 
 | |
| SectionList *ObjectFile::GetSectionList(bool update_module_section_list) {
 | |
|   if (m_sections_ap.get() == nullptr) {
 | |
|     if (update_module_section_list) {
 | |
|       ModuleSP module_sp(GetModule());
 | |
|       if (module_sp) {
 | |
|         std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
 | |
|         CreateSections(*module_sp->GetUnifiedSectionList());
 | |
|       }
 | |
|     } else {
 | |
|       SectionList unified_section_list;
 | |
|       CreateSections(unified_section_list);
 | |
|     }
 | |
|   }
 | |
|   return m_sections_ap.get();
 | |
| }
 | |
| 
 | |
| lldb::SymbolType
 | |
| ObjectFile::GetSymbolTypeFromName(llvm::StringRef name,
 | |
|                                   lldb::SymbolType symbol_type_hint) {
 | |
|   if (!name.empty()) {
 | |
|     if (name.startswith("_OBJC_")) {
 | |
|       // ObjC
 | |
|       if (name.startswith("_OBJC_CLASS_$_"))
 | |
|         return lldb::eSymbolTypeObjCClass;
 | |
|       if (name.startswith("_OBJC_METACLASS_$_"))
 | |
|         return lldb::eSymbolTypeObjCMetaClass;
 | |
|       if (name.startswith("_OBJC_IVAR_$_"))
 | |
|         return lldb::eSymbolTypeObjCIVar;
 | |
|     } else if (name.startswith(".objc_class_name_")) {
 | |
|       // ObjC v1
 | |
|       return lldb::eSymbolTypeObjCClass;
 | |
|     }
 | |
|   }
 | |
|   return symbol_type_hint;
 | |
| }
 | |
| 
 | |
| ConstString ObjectFile::GetNextSyntheticSymbolName() {
 | |
|   StreamString ss;
 | |
|   ConstString file_name = GetModule()->GetFileSpec().GetFilename();
 | |
|   ss.Printf("___lldb_unnamed_symbol%u$$%s", ++m_synthetic_symbol_idx,
 | |
|             file_name.GetCString());
 | |
|   return ConstString(ss.GetString());
 | |
| }
 | |
| 
 | |
| Status ObjectFile::LoadInMemory(Target &target, bool set_pc) {
 | |
|   Status error;
 | |
|   ProcessSP process = target.CalculateProcess();
 | |
|   if (!process)
 | |
|     return Status("No Process");
 | |
|   if (set_pc && !GetEntryPointAddress().IsValid())
 | |
|     return Status("No entry address in object file");
 | |
| 
 | |
|   SectionList *section_list = GetSectionList();
 | |
|   if (!section_list)
 | |
|     return Status("No section in object file");
 | |
|   size_t section_count = section_list->GetNumSections(0);
 | |
|   for (size_t i = 0; i < section_count; ++i) {
 | |
|     SectionSP section_sp = section_list->GetSectionAtIndex(i);
 | |
|     addr_t addr = target.GetSectionLoadList().GetSectionLoadAddress(section_sp);
 | |
|     if (addr != LLDB_INVALID_ADDRESS) {
 | |
|       DataExtractor section_data;
 | |
|       // We can skip sections like bss
 | |
|       if (section_sp->GetFileSize() == 0)
 | |
|         continue;
 | |
|       section_sp->GetSectionData(section_data);
 | |
|       lldb::offset_t written = process->WriteMemory(
 | |
|           addr, section_data.GetDataStart(), section_data.GetByteSize(), error);
 | |
|       if (written != section_data.GetByteSize())
 | |
|         return error;
 | |
|     }
 | |
|   }
 | |
|   if (set_pc) {
 | |
|     ThreadList &thread_list = process->GetThreadList();
 | |
|     ThreadSP curr_thread(thread_list.GetSelectedThread());
 | |
|     RegisterContextSP reg_context(curr_thread->GetRegisterContext());
 | |
|     Address file_entry = GetEntryPointAddress();
 | |
|     reg_context->SetPC(file_entry.GetLoadAddress(&target));
 | |
|   }
 | |
|   return error;
 | |
| }
 |