| //===-- ObjectFilePECOFF.cpp ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ObjectFilePECOFF.h" |
| |
| #include "llvm/Support/COFF.h" |
| |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/DataBuffer.h" |
| #include "lldb/Host/FileSpec.h" |
| #include "lldb/Core/FileSpecList.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/PluginManager.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/Symbol/ObjectFile.h" |
| #include "lldb/Target/SectionLoadList.h" |
| #include "lldb/Target/Target.h" |
| |
| #define IMAGE_DOS_SIGNATURE 0x5A4D // MZ |
| #define IMAGE_NT_SIGNATURE 0x00004550 // PE00 |
| #define OPT_HEADER_MAGIC_PE32 0x010b |
| #define OPT_HEADER_MAGIC_PE32_PLUS 0x020b |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| void |
| ObjectFilePECOFF::Initialize() |
| { |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance, |
| CreateMemoryInstance, |
| GetModuleSpecifications); |
| } |
| |
| void |
| ObjectFilePECOFF::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| |
| lldb_private::ConstString |
| ObjectFilePECOFF::GetPluginNameStatic() |
| { |
| static ConstString g_name("pe-coff"); |
| return g_name; |
| } |
| |
| const char * |
| ObjectFilePECOFF::GetPluginDescriptionStatic() |
| { |
| return "Portable Executable and Common Object File Format object file reader (32 and 64 bit)"; |
| } |
| |
| |
| ObjectFile * |
| ObjectFilePECOFF::CreateInstance (const lldb::ModuleSP &module_sp, |
| DataBufferSP& data_sp, |
| lldb::offset_t data_offset, |
| const lldb_private::FileSpec* file, |
| lldb::offset_t file_offset, |
| lldb::offset_t length) |
| { |
| if (!data_sp) |
| { |
| data_sp = file->MemoryMapFileContents(file_offset, length); |
| data_offset = 0; |
| } |
| |
| if (ObjectFilePECOFF::MagicBytesMatch(data_sp)) |
| { |
| // Update the data to contain the entire file if it doesn't already |
| if (data_sp->GetByteSize() < length) |
| data_sp = file->MemoryMapFileContents(file_offset, length); |
| std::unique_ptr<ObjectFile> objfile_ap(new ObjectFilePECOFF (module_sp, data_sp, data_offset, file, file_offset, length)); |
| if (objfile_ap.get() && objfile_ap->ParseHeader()) |
| return objfile_ap.release(); |
| } |
| return NULL; |
| } |
| |
| ObjectFile * |
| ObjectFilePECOFF::CreateMemoryInstance (const lldb::ModuleSP &module_sp, |
| lldb::DataBufferSP& data_sp, |
| const lldb::ProcessSP &process_sp, |
| lldb::addr_t header_addr) |
| { |
| return NULL; |
| } |
| |
| size_t |
| ObjectFilePECOFF::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) |
| { |
| const size_t initial_count = specs.GetSize(); |
| |
| if (ObjectFilePECOFF::MagicBytesMatch(data_sp)) |
| { |
| DataExtractor data; |
| data.SetData(data_sp, data_offset, length); |
| data.SetByteOrder(eByteOrderLittle); |
| |
| dos_header_t dos_header; |
| coff_header_t coff_header; |
| |
| if (ParseDOSHeader(data, dos_header)) |
| { |
| lldb::offset_t offset = dos_header.e_lfanew; |
| uint32_t pe_signature = data.GetU32(&offset); |
| if (pe_signature != IMAGE_NT_SIGNATURE) |
| return false; |
| if (ParseCOFFHeader(data, &offset, coff_header)) |
| { |
| ArchSpec spec; |
| spec.SetArchitecture(eArchTypeCOFF, coff_header.machine, LLDB_INVALID_CPUTYPE); |
| specs.Append(ModuleSpec(file, spec)); |
| } |
| } |
| } |
| |
| return specs.GetSize() - initial_count; |
| } |
| |
| |
| bool |
| ObjectFilePECOFF::MagicBytesMatch (DataBufferSP& data_sp) |
| { |
| DataExtractor data(data_sp, eByteOrderLittle, 4); |
| lldb::offset_t offset = 0; |
| uint16_t magic = data.GetU16 (&offset); |
| return magic == IMAGE_DOS_SIGNATURE; |
| } |
| |
| |
| ObjectFilePECOFF::ObjectFilePECOFF (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) : |
| ObjectFile (module_sp, file, file_offset, length, data_sp, data_offset), |
| m_dos_header (), |
| m_coff_header (), |
| m_coff_header_opt (), |
| m_sect_headers () |
| { |
| ::memset (&m_dos_header, 0, sizeof(m_dos_header)); |
| ::memset (&m_coff_header, 0, sizeof(m_coff_header)); |
| ::memset (&m_coff_header_opt, 0, sizeof(m_coff_header_opt)); |
| } |
| |
| |
| ObjectFilePECOFF::~ObjectFilePECOFF() |
| { |
| } |
| |
| |
| bool |
| ObjectFilePECOFF::ParseHeader () |
| { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| m_sect_headers.clear(); |
| m_data.SetByteOrder (eByteOrderLittle); |
| lldb::offset_t offset = 0; |
| |
| if (ParseDOSHeader(m_data, m_dos_header)) |
| { |
| offset = m_dos_header.e_lfanew; |
| uint32_t pe_signature = m_data.GetU32 (&offset); |
| if (pe_signature != IMAGE_NT_SIGNATURE) |
| return false; |
| if (ParseCOFFHeader(m_data, &offset, m_coff_header)) |
| { |
| if (m_coff_header.hdrsize > 0) |
| ParseCOFFOptionalHeader(&offset); |
| ParseSectionHeaders (offset); |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, bool value_is_offset) |
| { |
| bool changed = false; |
| ModuleSP module_sp = GetModule(); |
| if (module_sp) |
| { |
| size_t num_loaded_sections = 0; |
| SectionList *section_list = GetSectionList (); |
| if (section_list) |
| { |
| if (!value_is_offset) |
| { |
| value -= m_image_base; |
| } |
| |
| 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 all |
| // of the sections that have SHF_ALLOC in their flag bits. |
| SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); |
| if (section_sp && !section_sp->IsThreadSpecific()) |
| { |
| if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress() + value)) |
| ++num_loaded_sections; |
| } |
| } |
| changed = num_loaded_sections > 0; |
| } |
| } |
| return changed; |
| } |
| |
| |
| ByteOrder |
| ObjectFilePECOFF::GetByteOrder () const |
| { |
| return eByteOrderLittle; |
| } |
| |
| bool |
| ObjectFilePECOFF::IsExecutable() const |
| { |
| return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; |
| } |
| |
| uint32_t |
| ObjectFilePECOFF::GetAddressByteSize () const |
| { |
| if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) |
| return 8; |
| else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) |
| return 4; |
| return 4; |
| } |
| |
| //---------------------------------------------------------------------- |
| // NeedsEndianSwap |
| // |
| // Return true if an endian swap needs to occur when extracting data |
| // from this file. |
| //---------------------------------------------------------------------- |
| bool |
| ObjectFilePECOFF::NeedsEndianSwap() const |
| { |
| #if defined(__LITTLE_ENDIAN__) |
| return false; |
| #else |
| return true; |
| #endif |
| } |
| //---------------------------------------------------------------------- |
| // ParseDOSHeader |
| //---------------------------------------------------------------------- |
| bool |
| ObjectFilePECOFF::ParseDOSHeader (DataExtractor &data, dos_header_t &dos_header) |
| { |
| bool success = false; |
| lldb::offset_t offset = 0; |
| success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); |
| |
| if (success) |
| { |
| dos_header.e_magic = data.GetU16(&offset); // Magic number |
| success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; |
| |
| if (success) |
| { |
| dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file |
| dos_header.e_cp = data.GetU16(&offset); // Pages in file |
| dos_header.e_crlc = data.GetU16(&offset); // Relocations |
| dos_header.e_cparhdr = data.GetU16(&offset); // Size of header in paragraphs |
| dos_header.e_minalloc = data.GetU16(&offset); // Minimum extra paragraphs needed |
| dos_header.e_maxalloc = data.GetU16(&offset); // Maximum extra paragraphs needed |
| dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value |
| dos_header.e_sp = data.GetU16(&offset); // Initial SP value |
| dos_header.e_csum = data.GetU16(&offset); // Checksum |
| dos_header.e_ip = data.GetU16(&offset); // Initial IP value |
| dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value |
| dos_header.e_lfarlc = data.GetU16(&offset); // File address of relocation table |
| dos_header.e_ovno = data.GetU16(&offset); // Overlay number |
| |
| dos_header.e_res[0] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res[1] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res[2] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res[3] = data.GetU16(&offset); // Reserved words |
| |
| dos_header.e_oemid = data.GetU16(&offset); // OEM identifier (for e_oeminfo) |
| dos_header.e_oeminfo = data.GetU16(&offset); // OEM information; e_oemid specific |
| dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words |
| dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words |
| |
| dos_header.e_lfanew = data.GetU32(&offset); // File address of new exe header |
| } |
| } |
| if (!success) |
| memset(&dos_header, 0, sizeof(dos_header)); |
| return success; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // ParserCOFFHeader |
| //---------------------------------------------------------------------- |
| bool |
| ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, lldb::offset_t *offset_ptr, coff_header_t &coff_header) |
| { |
| bool success = data.ValidOffsetForDataOfSize (*offset_ptr, sizeof(coff_header)); |
| if (success) |
| { |
| coff_header.machine = data.GetU16(offset_ptr); |
| coff_header.nsects = data.GetU16(offset_ptr); |
| coff_header.modtime = data.GetU32(offset_ptr); |
| coff_header.symoff = data.GetU32(offset_ptr); |
| coff_header.nsyms = data.GetU32(offset_ptr); |
| coff_header.hdrsize = data.GetU16(offset_ptr); |
| coff_header.flags = data.GetU16(offset_ptr); |
| } |
| if (!success) |
| memset(&coff_header, 0, sizeof(coff_header)); |
| return success; |
| } |
| |
| bool |
| ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) |
| { |
| bool success = false; |
| const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; |
| if (*offset_ptr < end_offset) |
| { |
| success = true; |
| m_coff_header_opt.magic = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.major_linker_version = m_data.GetU8 (offset_ptr); |
| m_coff_header_opt.minor_linker_version = m_data.GetU8 (offset_ptr); |
| m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.entry = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); |
| |
| const uint32_t addr_byte_size = GetAddressByteSize (); |
| |
| if (*offset_ptr < end_offset) |
| { |
| if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) |
| { |
| // PE32 only |
| m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); |
| } |
| else |
| m_coff_header_opt.data_offset = 0; |
| |
| if (*offset_ptr < end_offset) |
| { |
| m_coff_header_opt.image_base = m_data.GetMaxU64 (offset_ptr, addr_byte_size); |
| m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); |
| m_coff_header_opt.stack_reserve_size = m_data.GetMaxU64 (offset_ptr, addr_byte_size); |
| m_coff_header_opt.stack_commit_size = m_data.GetMaxU64 (offset_ptr, addr_byte_size); |
| m_coff_header_opt.heap_reserve_size = m_data.GetMaxU64 (offset_ptr, addr_byte_size); |
| m_coff_header_opt.heap_commit_size = m_data.GetMaxU64 (offset_ptr, addr_byte_size); |
| m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); |
| uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.data_dirs.clear(); |
| m_coff_header_opt.data_dirs.resize(num_data_dir_entries); |
| uint32_t i; |
| for (i=0; i<num_data_dir_entries; i++) |
| { |
| m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); |
| m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); |
| } |
| |
| m_file_offset = m_coff_header_opt.image_base; |
| m_image_base = m_coff_header_opt.image_base; |
| } |
| } |
| } |
| // Make sure we are on track for section data which follows |
| *offset_ptr = end_offset; |
| return success; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // ParseSectionHeaders |
| //---------------------------------------------------------------------- |
| bool |
| ObjectFilePECOFF::ParseSectionHeaders (uint32_t section_header_data_offset) |
| { |
| const uint32_t nsects = m_coff_header.nsects; |
| m_sect_headers.clear(); |
| |
| if (nsects > 0) |
| { |
| const uint32_t addr_byte_size = GetAddressByteSize (); |
| const size_t section_header_byte_size = nsects * sizeof(section_header_t); |
| DataBufferSP section_header_data_sp(m_file.ReadFileContents (section_header_data_offset, section_header_byte_size)); |
| DataExtractor section_header_data (section_header_data_sp, GetByteOrder(), addr_byte_size); |
| |
| lldb::offset_t offset = 0; |
| if (section_header_data.ValidOffsetForDataOfSize (offset, section_header_byte_size)) |
| { |
| m_sect_headers.resize(nsects); |
| |
| for (uint32_t idx = 0; idx<nsects; ++idx) |
| { |
| const void *name_data = section_header_data.GetData(&offset, 8); |
| if (name_data) |
| { |
| memcpy(m_sect_headers[idx].name, name_data, 8); |
| m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].size = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].offset = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); |
| m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); |
| m_sect_headers[idx].nline = section_header_data.GetU16(&offset); |
| m_sect_headers[idx].flags = section_header_data.GetU32(&offset); |
| } |
| } |
| } |
| } |
| |
| return m_sect_headers.empty() == false; |
| } |
| |
| bool |
| ObjectFilePECOFF::GetSectionName(std::string& sect_name, const section_header_t& sect) |
| { |
| if (sect.name[0] == '/') |
| { |
| lldb::offset_t stroff = strtoul(§.name[1], NULL, 10); |
| lldb::offset_t string_file_offset = m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; |
| const char *name = m_data.GetCStr (&string_file_offset); |
| if (name) |
| { |
| sect_name = name; |
| return true; |
| } |
| |
| return false; |
| } |
| sect_name = sect.name; |
| return true; |
| } |
| |
| //---------------------------------------------------------------------- |
| // GetNListSymtab |
| //---------------------------------------------------------------------- |
| Symtab * |
| ObjectFilePECOFF::GetSymtab() |
| { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| if (m_symtab_ap.get() == NULL) |
| { |
| SectionList *sect_list = GetSectionList(); |
| m_symtab_ap.reset(new Symtab(this)); |
| Mutex::Locker symtab_locker (m_symtab_ap->GetMutex()); |
| |
| const uint32_t num_syms = m_coff_header.nsyms; |
| |
| if (num_syms > 0 && m_coff_header.symoff > 0) |
| { |
| const uint32_t symbol_size = 18; |
| const uint32_t addr_byte_size = GetAddressByteSize (); |
| const size_t symbol_data_size = num_syms * symbol_size; |
| // Include the 4 bytes string table size at the end of the symbols |
| DataBufferSP symtab_data_sp(m_file.ReadFileContents (m_coff_header.symoff, symbol_data_size + 4)); |
| DataExtractor symtab_data (symtab_data_sp, GetByteOrder(), addr_byte_size); |
| lldb::offset_t offset = symbol_data_size; |
| const uint32_t strtab_size = symtab_data.GetU32 (&offset); |
| DataBufferSP strtab_data_sp(m_file.ReadFileContents (m_coff_header.symoff + symbol_data_size, strtab_size)); |
| DataExtractor strtab_data (strtab_data_sp, GetByteOrder(), addr_byte_size); |
| |
| // First 4 bytes should be zeroed after strtab_size has been read, |
| // because it is used as offset 0 to encode a NULL string. |
| uint32_t* strtab_data_start = (uint32_t*)strtab_data_sp->GetBytes(); |
| strtab_data_start[0] = 0; |
| |
| offset = 0; |
| std::string symbol_name; |
| Symbol *symbols = m_symtab_ap->Resize (num_syms); |
| for (uint32_t i=0; i<num_syms; ++i) |
| { |
| coff_symbol_t symbol; |
| const uint32_t symbol_offset = offset; |
| const char *symbol_name_cstr = NULL; |
| // If the first 4 bytes of the symbol string are zero, then we |
| // it is followed by a 4 byte string table offset. Else these |
| // 8 bytes contain the symbol name |
| if (symtab_data.GetU32 (&offset) == 0) |
| { |
| // Long string that doesn't fit into the symbol table name, |
| // so now we must read the 4 byte string table offset |
| uint32_t strtab_offset = symtab_data.GetU32 (&offset); |
| symbol_name_cstr = strtab_data.PeekCStr (strtab_offset); |
| symbol_name.assign (symbol_name_cstr); |
| } |
| else |
| { |
| // Short string that fits into the symbol table name which is 8 bytes |
| offset += sizeof(symbol.name) - 4; // Skip remaining |
| symbol_name_cstr = symtab_data.PeekCStr (symbol_offset); |
| if (symbol_name_cstr == NULL) |
| break; |
| symbol_name.assign (symbol_name_cstr, sizeof(symbol.name)); |
| } |
| symbol.value = symtab_data.GetU32 (&offset); |
| symbol.sect = symtab_data.GetU16 (&offset); |
| symbol.type = symtab_data.GetU16 (&offset); |
| symbol.storage = symtab_data.GetU8 (&offset); |
| symbol.naux = symtab_data.GetU8 (&offset); |
| symbols[i].GetMangled ().SetValue (ConstString(symbol_name.c_str())); |
| if ((int16_t)symbol.sect >= 1) |
| { |
| Address symbol_addr(sect_list->GetSectionAtIndex(symbol.sect-1), symbol.value); |
| symbols[i].GetAddress() = symbol_addr; |
| } |
| |
| if (symbol.naux > 0) |
| { |
| i += symbol.naux; |
| offset += symbol_size; |
| } |
| } |
| |
| } |
| |
| // Read export header |
| if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() |
| && m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) |
| { |
| export_directory_entry export_table; |
| uint32_t data_start = m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; |
| Address address(m_coff_header_opt.image_base + data_start, sect_list); |
| DataBufferSP symtab_data_sp(m_file.ReadFileContents(address.GetSection()->GetFileOffset() + address.GetOffset(), m_coff_header_opt.data_dirs[0].vmsize)); |
| DataExtractor symtab_data (symtab_data_sp, GetByteOrder(), GetAddressByteSize()); |
| lldb::offset_t offset = 0; |
| |
| // Read export_table header |
| export_table.characteristics = symtab_data.GetU32(&offset); |
| export_table.time_date_stamp = symtab_data.GetU32(&offset); |
| export_table.major_version = symtab_data.GetU16(&offset); |
| export_table.minor_version = symtab_data.GetU16(&offset); |
| export_table.name = symtab_data.GetU32(&offset); |
| export_table.base = symtab_data.GetU32(&offset); |
| export_table.number_of_functions = symtab_data.GetU32(&offset); |
| export_table.number_of_names = symtab_data.GetU32(&offset); |
| export_table.address_of_functions = symtab_data.GetU32(&offset); |
| export_table.address_of_names = symtab_data.GetU32(&offset); |
| export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); |
| |
| bool has_ordinal = export_table.address_of_name_ordinals != 0; |
| |
| lldb::offset_t name_offset = export_table.address_of_names - data_start; |
| lldb::offset_t name_ordinal_offset = export_table.address_of_name_ordinals - data_start; |
| |
| Symbol *symbols = m_symtab_ap->Resize(export_table.number_of_names); |
| |
| std::string symbol_name; |
| |
| // Read each export table entry |
| for (size_t i = 0; i < export_table.number_of_names; ++i) |
| { |
| uint32_t name_ordinal = has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; |
| uint32_t name_address = symtab_data.GetU32(&name_offset); |
| |
| const char* symbol_name_cstr = symtab_data.PeekCStr(name_address - data_start); |
| symbol_name.assign(symbol_name_cstr); |
| |
| lldb::offset_t function_offset = export_table.address_of_functions - data_start + sizeof(uint32_t) * name_ordinal; |
| uint32_t function_rva = symtab_data.GetU32(&function_offset); |
| |
| Address symbol_addr(m_coff_header_opt.image_base + function_rva, sect_list); |
| symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); |
| symbols[i].GetAddress() = symbol_addr; |
| symbols[i].SetType(lldb::eSymbolTypeCode); |
| symbols[i].SetDebug(true); |
| } |
| } |
| } |
| } |
| return m_symtab_ap.get(); |
| |
| } |
| |
| bool |
| ObjectFilePECOFF::IsStripped () |
| { |
| // TODO: determine this for COFF |
| return false; |
| } |
| |
| |
| |
| void |
| ObjectFilePECOFF::CreateSections (SectionList &unified_section_list) |
| { |
| if (!m_sections_ap.get()) |
| { |
| m_sections_ap.reset(new SectionList()); |
| |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| const uint32_t nsects = m_sect_headers.size(); |
| ModuleSP module_sp (GetModule()); |
| for (uint32_t idx = 0; idx<nsects; ++idx) |
| { |
| std::string sect_name; |
| GetSectionName (sect_name, m_sect_headers[idx]); |
| ConstString const_sect_name (sect_name.c_str()); |
| static ConstString g_code_sect_name (".code"); |
| static ConstString g_CODE_sect_name ("CODE"); |
| static ConstString g_data_sect_name (".data"); |
| static ConstString g_DATA_sect_name ("DATA"); |
| static ConstString g_bss_sect_name (".bss"); |
| static ConstString g_BSS_sect_name ("BSS"); |
| static ConstString g_debug_sect_name (".debug"); |
| static ConstString g_reloc_sect_name (".reloc"); |
| static ConstString g_stab_sect_name (".stab"); |
| static ConstString g_stabstr_sect_name (".stabstr"); |
| static ConstString g_sect_name_dwarf_debug_abbrev (".debug_abbrev"); |
| static ConstString g_sect_name_dwarf_debug_aranges (".debug_aranges"); |
| static ConstString g_sect_name_dwarf_debug_frame (".debug_frame"); |
| static ConstString g_sect_name_dwarf_debug_info (".debug_info"); |
| static ConstString g_sect_name_dwarf_debug_line (".debug_line"); |
| static ConstString g_sect_name_dwarf_debug_loc (".debug_loc"); |
| static ConstString g_sect_name_dwarf_debug_macinfo (".debug_macinfo"); |
| static ConstString g_sect_name_dwarf_debug_pubnames (".debug_pubnames"); |
| static ConstString g_sect_name_dwarf_debug_pubtypes (".debug_pubtypes"); |
| static ConstString g_sect_name_dwarf_debug_ranges (".debug_ranges"); |
| static ConstString g_sect_name_dwarf_debug_str (".debug_str"); |
| static ConstString g_sect_name_eh_frame (".eh_frame"); |
| SectionType section_type = eSectionTypeOther; |
| if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_CODE && |
| ((const_sect_name == g_code_sect_name) || (const_sect_name == g_CODE_sect_name))) |
| { |
| section_type = eSectionTypeCode; |
| } |
| else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && |
| ((const_sect_name == g_data_sect_name) || (const_sect_name == g_DATA_sect_name))) |
| { |
| section_type = eSectionTypeData; |
| } |
| else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && |
| ((const_sect_name == g_bss_sect_name) || (const_sect_name == g_BSS_sect_name))) |
| { |
| if (m_sect_headers[idx].size == 0) |
| section_type = eSectionTypeZeroFill; |
| else |
| section_type = eSectionTypeData; |
| } |
| else if (const_sect_name == g_debug_sect_name) |
| { |
| section_type = eSectionTypeDebug; |
| } |
| else if (const_sect_name == g_stabstr_sect_name) |
| { |
| section_type = eSectionTypeDataCString; |
| } |
| else if (const_sect_name == g_reloc_sect_name) |
| { |
| section_type = eSectionTypeOther; |
| } |
| else if (const_sect_name == g_sect_name_dwarf_debug_abbrev) section_type = eSectionTypeDWARFDebugAbbrev; |
| else if (const_sect_name == g_sect_name_dwarf_debug_aranges) section_type = eSectionTypeDWARFDebugAranges; |
| else if (const_sect_name == g_sect_name_dwarf_debug_frame) section_type = eSectionTypeDWARFDebugFrame; |
| else if (const_sect_name == g_sect_name_dwarf_debug_info) section_type = eSectionTypeDWARFDebugInfo; |
| else if (const_sect_name == g_sect_name_dwarf_debug_line) section_type = eSectionTypeDWARFDebugLine; |
| else if (const_sect_name == g_sect_name_dwarf_debug_loc) section_type = eSectionTypeDWARFDebugLoc; |
| else if (const_sect_name == g_sect_name_dwarf_debug_macinfo) section_type = eSectionTypeDWARFDebugMacInfo; |
| else if (const_sect_name == g_sect_name_dwarf_debug_pubnames) section_type = eSectionTypeDWARFDebugPubNames; |
| else if (const_sect_name == g_sect_name_dwarf_debug_pubtypes) section_type = eSectionTypeDWARFDebugPubTypes; |
| else if (const_sect_name == g_sect_name_dwarf_debug_ranges) section_type = eSectionTypeDWARFDebugRanges; |
| else if (const_sect_name == g_sect_name_dwarf_debug_str) section_type = eSectionTypeDWARFDebugStr; |
| else if (const_sect_name == g_sect_name_eh_frame) section_type = eSectionTypeEHFrame; |
| else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_CODE) |
| { |
| section_type = eSectionTypeCode; |
| } |
| else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) |
| { |
| section_type = eSectionTypeData; |
| } |
| else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) |
| { |
| if (m_sect_headers[idx].size == 0) |
| section_type = eSectionTypeZeroFill; |
| else |
| section_type = eSectionTypeData; |
| } |
| |
| // Use a segment ID of the segment index shifted left by 8 so they |
| // never conflict with any of the sections. |
| SectionSP section_sp (new Section (module_sp, // Module to which this section belongs |
| this, // Object file to which this section belongs |
| idx + 1, // Section ID is the 1 based segment index shifted right by 8 bits as not to collide with any of the 256 section IDs that are possible |
| const_sect_name, // Name of this section |
| section_type, // This section is a container of other sections. |
| m_coff_header_opt.image_base + m_sect_headers[idx].vmaddr, // File VM address == addresses as they are found in the object file |
| m_sect_headers[idx].vmsize, // VM size in bytes of this section |
| m_sect_headers[idx].offset, // Offset to the data for this section in the file |
| m_sect_headers[idx].size, // Size in bytes of this section as found in the file |
| m_coff_header_opt.sect_alignment, // Section alignment |
| m_sect_headers[idx].flags)); // Flags for this section |
| |
| //section_sp->SetIsEncrypted (segment_is_encrypted); |
| |
| unified_section_list.AddSection(section_sp); |
| m_sections_ap->AddSection (section_sp); |
| } |
| } |
| } |
| } |
| |
| bool |
| ObjectFilePECOFF::GetUUID (UUID* uuid) |
| { |
| return false; |
| } |
| |
| uint32_t |
| ObjectFilePECOFF::GetDependentModules (FileSpecList& files) |
| { |
| return 0; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Dump |
| // |
| // Dump the specifics of the runtime file container (such as any headers |
| // segments, sections, etc). |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::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("ObjectFilePECOFF"); |
| |
| ArchSpec header_arch; |
| GetArchitecture (header_arch); |
| |
| *s << ", file = '" << m_file << "', arch = " << header_arch.GetArchitectureName() << "\n"; |
| |
| SectionList *sections = GetSectionList(); |
| if (sections) |
| sections->Dump(s, NULL, true, UINT32_MAX); |
| |
| if (m_symtab_ap.get()) |
| m_symtab_ap->Dump(s, NULL, eSortOrderNone); |
| |
| if (m_dos_header.e_magic) |
| DumpDOSHeader (s, m_dos_header); |
| if (m_coff_header.machine) |
| { |
| DumpCOFFHeader (s, m_coff_header); |
| if (m_coff_header.hdrsize) |
| DumpOptCOFFHeader (s, m_coff_header_opt); |
| } |
| s->EOL(); |
| DumpSectionHeaders(s); |
| s->EOL(); |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // DumpDOSHeader |
| // |
| // Dump the MS-DOS header to the specified output stream |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t& header) |
| { |
| s->PutCString ("MSDOS Header\n"); |
| s->Printf (" e_magic = 0x%4.4x\n", header.e_magic); |
| s->Printf (" e_cblp = 0x%4.4x\n", header.e_cblp); |
| s->Printf (" e_cp = 0x%4.4x\n", header.e_cp); |
| s->Printf (" e_crlc = 0x%4.4x\n", header.e_crlc); |
| s->Printf (" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); |
| s->Printf (" e_minalloc = 0x%4.4x\n", header.e_minalloc); |
| s->Printf (" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); |
| s->Printf (" e_ss = 0x%4.4x\n", header.e_ss); |
| s->Printf (" e_sp = 0x%4.4x\n", header.e_sp); |
| s->Printf (" e_csum = 0x%4.4x\n", header.e_csum); |
| s->Printf (" e_ip = 0x%4.4x\n", header.e_ip); |
| s->Printf (" e_cs = 0x%4.4x\n", header.e_cs); |
| s->Printf (" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); |
| s->Printf (" e_ovno = 0x%4.4x\n", header.e_ovno); |
| s->Printf (" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", |
| header.e_res[0], |
| header.e_res[1], |
| header.e_res[2], |
| header.e_res[3]); |
| s->Printf (" e_oemid = 0x%4.4x\n", header.e_oemid); |
| s->Printf (" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); |
| s->Printf (" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", |
| header.e_res2[0], |
| header.e_res2[1], |
| header.e_res2[2], |
| header.e_res2[3], |
| header.e_res2[4], |
| header.e_res2[5], |
| header.e_res2[6], |
| header.e_res2[7], |
| header.e_res2[8], |
| header.e_res2[9]); |
| s->Printf (" e_lfanew = 0x%8.8x\n", header.e_lfanew); |
| } |
| |
| //---------------------------------------------------------------------- |
| // DumpCOFFHeader |
| // |
| // Dump the COFF header to the specified output stream |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t& header) |
| { |
| s->PutCString ("COFF Header\n"); |
| s->Printf (" machine = 0x%4.4x\n", header.machine); |
| s->Printf (" nsects = 0x%4.4x\n", header.nsects); |
| s->Printf (" modtime = 0x%8.8x\n", header.modtime); |
| s->Printf (" symoff = 0x%8.8x\n", header.symoff); |
| s->Printf (" nsyms = 0x%8.8x\n", header.nsyms); |
| s->Printf (" hdrsize = 0x%4.4x\n", header.hdrsize); |
| } |
| |
| //---------------------------------------------------------------------- |
| // DumpOptCOFFHeader |
| // |
| // Dump the optional COFF header to the specified output stream |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, const coff_opt_header_t& header) |
| { |
| s->PutCString ("Optional COFF Header\n"); |
| s->Printf (" magic = 0x%4.4x\n", header.magic); |
| s->Printf (" major_linker_version = 0x%2.2x\n", header.major_linker_version); |
| s->Printf (" minor_linker_version = 0x%2.2x\n", header.minor_linker_version); |
| s->Printf (" code_size = 0x%8.8x\n", header.code_size); |
| s->Printf (" data_size = 0x%8.8x\n", header.data_size); |
| s->Printf (" bss_size = 0x%8.8x\n", header.bss_size); |
| s->Printf (" entry = 0x%8.8x\n", header.entry); |
| s->Printf (" code_offset = 0x%8.8x\n", header.code_offset); |
| s->Printf (" data_offset = 0x%8.8x\n", header.data_offset); |
| s->Printf (" image_base = 0x%16.16" PRIx64 "\n", header.image_base); |
| s->Printf (" sect_alignment = 0x%8.8x\n", header.sect_alignment); |
| s->Printf (" file_alignment = 0x%8.8x\n", header.file_alignment); |
| s->Printf (" major_os_system_version = 0x%4.4x\n", header.major_os_system_version); |
| s->Printf (" minor_os_system_version = 0x%4.4x\n", header.minor_os_system_version); |
| s->Printf (" major_image_version = 0x%4.4x\n", header.major_image_version); |
| s->Printf (" minor_image_version = 0x%4.4x\n", header.minor_image_version); |
| s->Printf (" major_subsystem_version = 0x%4.4x\n", header.major_subsystem_version); |
| s->Printf (" minor_subsystem_version = 0x%4.4x\n", header.minor_subsystem_version); |
| s->Printf (" reserved1 = 0x%8.8x\n", header.reserved1); |
| s->Printf (" image_size = 0x%8.8x\n", header.image_size); |
| s->Printf (" header_size = 0x%8.8x\n", header.header_size); |
| s->Printf (" checksum = 0x%8.8x\n", header.checksum); |
| s->Printf (" subsystem = 0x%4.4x\n", header.subsystem); |
| s->Printf (" dll_flags = 0x%4.4x\n", header.dll_flags); |
| s->Printf (" stack_reserve_size = 0x%16.16" PRIx64 "\n", header.stack_reserve_size); |
| s->Printf (" stack_commit_size = 0x%16.16" PRIx64 "\n", header.stack_commit_size); |
| s->Printf (" heap_reserve_size = 0x%16.16" PRIx64 "\n", header.heap_reserve_size); |
| s->Printf (" heap_commit_size = 0x%16.16" PRIx64 "\n", header.heap_commit_size); |
| s->Printf (" loader_flags = 0x%8.8x\n", header.loader_flags); |
| s->Printf (" num_data_dir_entries = 0x%8.8x\n", (uint32_t)header.data_dirs.size()); |
| uint32_t i; |
| for (i=0; i<header.data_dirs.size(); i++) |
| { |
| s->Printf (" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", |
| i, |
| header.data_dirs[i].vmaddr, |
| header.data_dirs[i].vmsize); |
| } |
| } |
| //---------------------------------------------------------------------- |
| // DumpSectionHeader |
| // |
| // Dump a single ELF section header to the specified output stream |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::DumpSectionHeader(Stream *s, const section_header_t& sh) |
| { |
| std::string name; |
| GetSectionName(name, sh); |
| s->Printf ("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x 0x%4.4x 0x%8.8x\n", |
| name.c_str(), |
| sh.vmaddr, |
| sh.vmsize, |
| sh.offset, |
| sh.size, |
| sh.reloff, |
| sh.lineoff, |
| sh.nreloc, |
| sh.nline, |
| sh.flags); |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // DumpSectionHeaders |
| // |
| // Dump all of the ELF section header to the specified output stream |
| //---------------------------------------------------------------------- |
| void |
| ObjectFilePECOFF::DumpSectionHeaders(Stream *s) |
| { |
| |
| s->PutCString ("Section Headers\n"); |
| s->PutCString ("IDX name vm addr vm size file off file size reloc off line off nreloc nline flags\n"); |
| s->PutCString ("==== ---------------- ---------- ---------- ---------- ---------- ---------- ---------- ------ ------ ----------\n"); |
| |
| uint32_t idx = 0; |
| SectionHeaderCollIter pos, end = m_sect_headers.end(); |
| |
| for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) |
| { |
| s->Printf ("[%2u] ", idx); |
| ObjectFilePECOFF::DumpSectionHeader(s, *pos); |
| } |
| } |
| |
| bool |
| ObjectFilePECOFF::GetArchitecture (ArchSpec &arch) |
| { |
| uint16_t machine = m_coff_header.machine; |
| switch (machine) |
| { |
| case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: |
| case llvm::COFF::IMAGE_FILE_MACHINE_I386: |
| case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: |
| case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: |
| case llvm::COFF::IMAGE_FILE_MACHINE_ARM: |
| case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: |
| case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: |
| arch.SetArchitecture (eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE); |
| return true; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| ObjectFile::Type |
| ObjectFilePECOFF::CalculateType() |
| { |
| if (m_coff_header.machine != 0) |
| { |
| if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) |
| return eTypeExecutable; |
| else |
| return eTypeSharedLibrary; |
| } |
| return eTypeExecutable; |
| } |
| |
| ObjectFile::Strata |
| ObjectFilePECOFF::CalculateStrata() |
| { |
| return eStrataUser; |
| } |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| ConstString |
| ObjectFilePECOFF::GetPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| ObjectFilePECOFF::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
