| //===-- ObjectFileJIT.cpp ---------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/StringRef.h" |
| |
| #include "ObjectFileJIT.h" |
| |
| #include "lldb/lldb-private-log.h" |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/DataBuffer.h" |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/FileSpecList.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/RangeMap.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/Timer.h" |
| #include "lldb/Core/UUID.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/FileSpec.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/Platform.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/SectionLoadList.h" |
| #include "lldb/Target/Target.h" |
| |
| #ifndef __APPLE__ |
| #include "Utility/UuidCompatibility.h" |
| #endif |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| |
| void |
| ObjectFileJIT::Initialize() |
| { |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance, |
| CreateMemoryInstance, |
| GetModuleSpecifications); |
| } |
| |
| void |
| ObjectFileJIT::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| |
| lldb_private::ConstString |
| ObjectFileJIT::GetPluginNameStatic() |
| { |
| static ConstString g_name("jit"); |
| return g_name; |
| } |
| |
| const char * |
| ObjectFileJIT::GetPluginDescriptionStatic() |
| { |
| return "JIT code object file"; |
| } |
| |
| ObjectFile * |
| ObjectFileJIT::CreateInstance (const lldb::ModuleSP &module_sp, |
| DataBufferSP& data_sp, |
| lldb::offset_t data_offset, |
| const FileSpec* file, |
| lldb::offset_t file_offset, |
| lldb::offset_t length) |
| { |
| // JIT'ed object file is backed by the ObjectFileJITDelegate, never |
| // read from a file |
| return NULL; |
| } |
| |
| ObjectFile * |
| ObjectFileJIT::CreateMemoryInstance (const lldb::ModuleSP &module_sp, |
| DataBufferSP& data_sp, |
| const ProcessSP &process_sp, |
| lldb::addr_t header_addr) |
| { |
| // JIT'ed object file is backed by the ObjectFileJITDelegate, never |
| // read from memory |
| return NULL; |
| } |
| |
| size_t |
| ObjectFileJIT::GetModuleSpecifications (const lldb_private::FileSpec& file, |
| lldb::DataBufferSP& data_sp, |
| lldb::offset_t data_offset, |
| lldb::offset_t file_offset, |
| lldb::offset_t length, |
| lldb_private::ModuleSpecList &specs) |
| { |
| // JIT'ed object file can't be read from a file on disk |
| return 0; |
| } |
| |
| ObjectFileJIT::ObjectFileJIT (const lldb::ModuleSP &module_sp, |
| const ObjectFileJITDelegateSP &delegate_sp) : |
| ObjectFile(module_sp, NULL, 0, 0, DataBufferSP(), 0), |
| m_delegate_wp () |
| { |
| if (delegate_sp) |
| { |
| m_delegate_wp = delegate_sp; |
| m_data.SetByteOrder(delegate_sp->GetByteOrder()); |
| m_data.SetAddressByteSize(delegate_sp->GetAddressByteSize()); |
| } |
| } |
| |
| ObjectFileJIT::~ObjectFileJIT() |
| { |
| } |
| |
| |
| bool |
| ObjectFileJIT::ParseHeader () |
| { |
| // JIT code is never in a file, nor is it required to have any header |
| return false; |
| } |
| |
| ByteOrder |
| ObjectFileJIT::GetByteOrder () const |
| { |
| return m_data.GetByteOrder(); |
| } |
| |
| bool |
| ObjectFileJIT::IsExecutable() const |
| { |
| return false; |
| } |
| |
| uint32_t |
| ObjectFileJIT::GetAddressByteSize () const |
| { |
| return m_data.GetAddressByteSize(); |
| } |
| |
| |
| Symtab * |
| ObjectFileJIT::GetSymtab() |
| { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| if (m_symtab_ap.get() == NULL) |
| { |
| m_symtab_ap.reset(new Symtab(this)); |
| Mutex::Locker symtab_locker (m_symtab_ap->GetMutex()); |
| ObjectFileJITDelegateSP delegate_sp (m_delegate_wp.lock()); |
| if (delegate_sp) |
| delegate_sp->PopulateSymtab(this, *m_symtab_ap); |
| // TODO: get symbols from delegate |
| m_symtab_ap->Finalize (); |
| } |
| } |
| return m_symtab_ap.get(); |
| } |
| |
| bool |
| ObjectFileJIT::IsStripped () |
| { |
| return false; // JIT code that is in a module is never stripped |
| } |
| |
| void |
| ObjectFileJIT::CreateSections (SectionList &unified_section_list) |
| { |
| if (!m_sections_ap.get()) |
| { |
| m_sections_ap.reset(new SectionList()); |
| ObjectFileJITDelegateSP delegate_sp (m_delegate_wp.lock()); |
| if (delegate_sp) |
| { |
| delegate_sp->PopulateSectionList(this, *m_sections_ap); |
| unified_section_list = *m_sections_ap; |
| } |
| } |
| } |
| |
| void |
| ObjectFileJIT::Dump (Stream *s) |
| { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| s->Printf("%p: ", static_cast<void*>(this)); |
| s->Indent(); |
| s->PutCString("ObjectFileJIT"); |
| |
| ArchSpec arch; |
| if (GetArchitecture(arch)) |
| *s << ", arch = " << arch.GetArchitectureName(); |
| |
| s->EOL(); |
| |
| SectionList *sections = GetSectionList(); |
| if (sections) |
| sections->Dump(s, NULL, true, UINT32_MAX); |
| |
| if (m_symtab_ap.get()) |
| m_symtab_ap->Dump(s, NULL, eSortOrderNone); |
| } |
| } |
| |
| bool |
| ObjectFileJIT::GetUUID (lldb_private::UUID* uuid) |
| { |
| // TODO: maybe get from delegate, not needed for first pass |
| return false; |
| } |
| |
| |
| uint32_t |
| ObjectFileJIT::GetDependentModules (FileSpecList& files) |
| { |
| // JIT modules don't have dependencies, but they could |
| // if external functions are called and we know where they are |
| files.Clear(); |
| return 0; |
| } |
| |
| lldb_private::Address |
| ObjectFileJIT::GetEntryPointAddress () |
| { |
| return Address(); |
| } |
| |
| lldb_private::Address |
| ObjectFileJIT::GetHeaderAddress () |
| { |
| return Address(); |
| } |
| |
| |
| |
| ObjectFile::Type |
| ObjectFileJIT::CalculateType() |
| { |
| return eTypeJIT; |
| } |
| |
| ObjectFile::Strata |
| ObjectFileJIT::CalculateStrata() |
| { |
| return eStrataJIT; |
| } |
| |
| |
| bool |
| ObjectFileJIT::GetArchitecture (ArchSpec &arch) |
| { |
| ObjectFileJITDelegateSP delegate_sp (m_delegate_wp.lock()); |
| if (delegate_sp) |
| return delegate_sp->GetArchitecture(arch); |
| return false; |
| } |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| lldb_private::ConstString |
| ObjectFileJIT::GetPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| ObjectFileJIT::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| |
| bool |
| ObjectFileJIT::SetLoadAddress (Target &target, |
| lldb::addr_t value, |
| bool value_is_offset) |
| { |
| size_t num_loaded_sections = 0; |
| SectionList *section_list = GetSectionList (); |
| if (section_list) |
| { |
| const size_t num_sections = section_list->GetSize(); |
| // "value" is an offset to apply to each top level segment |
| for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) |
| { |
| // Iterate through the object file sections to find all |
| // of the sections that size on disk (to avoid __PAGEZERO) |
| // and load them |
| SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); |
| if (section_sp && |
| section_sp->GetFileSize() > 0 && |
| section_sp->IsThreadSpecific() == false) |
| { |
| if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress() + value)) |
| ++num_loaded_sections; |
| } |
| } |
| } |
| return num_loaded_sections > 0; |
| } |
| |
| |
| size_t |
| ObjectFileJIT::ReadSectionData (const lldb_private::Section *section, |
| lldb::offset_t section_offset, |
| void *dst, |
| size_t dst_len) const |
| { |
| lldb::offset_t file_size = section->GetFileSize(); |
| if (section_offset < file_size) |
| { |
| size_t src_len = file_size - section_offset; |
| if (src_len > dst_len) |
| src_len = dst_len; |
| const uint8_t *src = ((uint8_t *)(uintptr_t)section->GetFileOffset()) + section_offset; |
| |
| memcpy (dst, src, src_len); |
| return src_len; |
| } |
| return 0; |
| } |
| |
| size_t |
| ObjectFileJIT::ReadSectionData (const lldb_private::Section *section, |
| lldb_private::DataExtractor& section_data) const |
| { |
| if (section->GetFileSize()) |
| { |
| const void *src = (void *)(uintptr_t)section->GetFileOffset(); |
| |
| DataBufferSP data_sp (new lldb_private::DataBufferHeap(src, section->GetFileSize())); |
| if (data_sp) |
| { |
| section_data.SetData (data_sp, 0, data_sp->GetByteSize()); |
| section_data.SetByteOrder (GetByteOrder()); |
| section_data.SetAddressByteSize (GetAddressByteSize()); |
| return section_data.GetByteSize(); |
| } |
| } |
| section_data.Clear(); |
| return 0; |
| } |
| |