| //===-- 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/MachO.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/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" |
| |
| static uint32_t COFFMachineToMachCPU(uint16_t machine); |
| |
| #define IMAGE_FILE_MACHINE_UNKNOWN 0x0000 |
| #define IMAGE_FILE_MACHINE_AM33 0x01d3 // Matsushita AM33 |
| #define IMAGE_FILE_MACHINE_AMD64 0x8664 // x64 |
| #define IMAGE_FILE_MACHINE_ARM 0x01c0 // ARM little endian |
| #define IMAGE_FILE_MACHINE_EBC 0x0ebc // EFI byte code |
| #define IMAGE_FILE_MACHINE_I386 0x014c // Intel 386 or later processors and compatible processors |
| #define IMAGE_FILE_MACHINE_IA64 0x0200 // Intel Itanium processor family |
| #define IMAGE_FILE_MACHINE_M32R 0x9041 // Mitsubishi M32R little endian |
| #define IMAGE_FILE_MACHINE_MIPS16 0x0266 // MIPS16 |
| #define IMAGE_FILE_MACHINE_MIPSFPU 0x0366 // MIPS with FPU |
| #define IMAGE_FILE_MACHINE_MIPSFPU16 0x0466 // MIPS16 with FPU |
| #define IMAGE_FILE_MACHINE_POWERPC 0x01f0 // Power PC little endian |
| #define IMAGE_FILE_MACHINE_POWERPCFP 0x01f1 // Power PC with floating point support |
| #define IMAGE_FILE_MACHINE_R4000 0x0166 // MIPS little endian |
| #define IMAGE_FILE_MACHINE_SH3 0x01a2 // Hitachi SH3 |
| #define IMAGE_FILE_MACHINE_SH3DSP 0x01a3 // Hitachi SH3 DSP |
| #define IMAGE_FILE_MACHINE_SH4 0x01a6 // Hitachi SH4 |
| #define IMAGE_FILE_MACHINE_SH5 0x01a8 // Hitachi SH5 |
| #define IMAGE_FILE_MACHINE_THUMB 0x01c2 // Thumb |
| #define IMAGE_FILE_MACHINE_WCEMIPSV2 0x0169 // MIPS little-endian WCE v2 |
| |
| |
| #define IMAGE_DOS_SIGNATURE 0x5A4D // MZ |
| #define IMAGE_OS2_SIGNATURE 0x454E // NE |
| #define IMAGE_OS2_SIGNATURE_LE 0x454C // LE |
| #define IMAGE_NT_SIGNATURE 0x00004550 // PE00 |
| #define OPT_HEADER_MAGIC_PE32 0x010b |
| #define OPT_HEADER_MAGIC_PE32_PLUS 0x020b |
| |
| #define IMAGE_FILE_RELOCS_STRIPPED 0x0001 |
| #define IMAGE_FILE_EXECUTABLE_IMAGE 0x0002 |
| #define IMAGE_FILE_LINE_NUMS_STRIPPED 0x0004 |
| #define IMAGE_FILE_LOCAL_SYMS_STRIPPED 0x0008 |
| #define IMAGE_FILE_AGGRESSIVE_WS_TRIM 0x0010 |
| #define IMAGE_FILE_LARGE_ADDRESS_AWARE 0x0020 |
| //#define 0x0040 // Reserved |
| #define IMAGE_FILE_BYTES_REVERSED_LO 0x0080 |
| #define IMAGE_FILE_32BIT_MACHINE 0x0100 |
| #define IMAGE_FILE_DEBUG_STRIPPED 0x0200 |
| #define IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP 0x0400 |
| #define IMAGE_FILE_NET_RUN_FROM_SWAP 0x0800 |
| #define IMAGE_FILE_SYSTEM 0x1000 |
| #define IMAGE_FILE_DLL 0x2000 |
| #define IMAGE_FILE_UP_SYSTEM_ONLY 0x4000 |
| #define IMAGE_FILE_BYTES_REVERSED_HI 0x8000 |
| |
| |
| // Section Flags |
| // The section flags in the Characteristics field of the section header indicate |
| // characteristics of the section. |
| #define IMAGE_SCN_TYPE_NO_PAD 0x00000008 // The section should not be padded to the next boundary. This flag is obsolete and is replaced by IMAGE_SCN_ALIGN_1BYTES. This is valid only for object files. |
| #define IMAGE_SCN_CNT_CODE 0x00000020 // The section contains executable code. |
| #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 // The section contains initialized data. |
| #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 // The section contains uninitialized data. |
| #define IMAGE_SCN_LNK_OTHER 0x00000100 // Reserved for future use. |
| #define IMAGE_SCN_LNK_INFO 0x00000200 // The section contains comments or other information. The .drectve section has this type. This is valid for object files only. |
| #define IMAGE_SCN_LNK_REMOVE 0x00000800 // The section will not become part of the image. This is valid only for object files. |
| #define IMAGE_SCN_LNK_COMDAT 0x00001000 // The section contains COMDAT data. For more information, see section 5.5.6, “COMDAT Sections (Object Only).” This is valid only for object files. |
| #define IMAGE_SCN_GPREL 0x00008000 // The section contains data referenced through the global pointer (GP). |
| #define IMAGE_SCN_MEM_PURGEABLE 0x00020000 |
| #define IMAGE_SCN_MEM_16BIT 0x00020000 // For ARM machine types, the section contains Thumb code. Reserved for future use with other machine types. |
| #define IMAGE_SCN_MEM_LOCKED 0x00040000 |
| #define IMAGE_SCN_MEM_PRELOAD 0x00080000 |
| #define IMAGE_SCN_ALIGN_1BYTES 0x00100000 // Align data on a 1-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_2BYTES 0x00200000 // Align data on a 2-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_4BYTES 0x00300000 // Align data on a 4-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_8BYTES 0x00400000 // Align data on an 8-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_16BYTES 0x00500000 // Align data on a 16-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_32BYTES 0x00600000 // Align data on a 32-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_64BYTES 0x00700000 // Align data on a 64-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_128BYTES 0x00800000 // Align data on a 128-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_256BYTES 0x00900000 // Align data on a 256-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_512BYTES 0x00A00000 // Align data on a 512-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_1024BYTES 0x00B00000 // Align data on a 1024-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_2048BYTES 0x00C00000 // Align data on a 2048-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_4096BYTES 0x00D00000 // Align data on a 4096-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_ALIGN_8192BYTES 0x00E00000 // Align data on an 8192-byte boundary. Valid only for object files. |
| #define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 // The section contains extended relocations. |
| #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000 // The section can be discarded as needed. |
| #define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 // The section cannot be cached. |
| #define IMAGE_SCN_MEM_NOT_PAGED 0x08000000 // The section is not pageable. |
| #define IMAGE_SCN_MEM_SHARED 0x10000000 // The section can be shared in memory. |
| #define IMAGE_SCN_MEM_EXECUTE 0x20000000 // The section can be executed as code. |
| #define IMAGE_SCN_MEM_READ 0x40000000 // The section can be read. |
| #define IMAGE_SCN_MEM_WRITE 0x80000000 // The section can be written to. |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| void |
| ObjectFilePECOFF::Initialize() |
| { |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance, |
| CreateMemoryInstance); |
| } |
| |
| void |
| ObjectFilePECOFF::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| |
| const char * |
| ObjectFilePECOFF::GetPluginNameStatic() |
| { |
| return "object-file.pe-coff"; |
| } |
| |
| 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& dataSP, const FileSpec* file, addr_t offset, addr_t length) |
| { |
| if (ObjectFilePECOFF::MagicBytesMatch(dataSP)) |
| { |
| std::auto_ptr<ObjectFile> objfile_ap(new ObjectFilePECOFF (module_sp, dataSP, 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; |
| } |
| |
| bool |
| ObjectFilePECOFF::MagicBytesMatch (DataBufferSP& dataSP) |
| { |
| DataExtractor data(dataSP, eByteOrderLittle, 4); |
| uint32_t offset = 0; |
| uint16_t magic = data.GetU16 (&offset); |
| return magic == IMAGE_DOS_SIGNATURE; |
| } |
| |
| |
| ObjectFilePECOFF::ObjectFilePECOFF (const lldb::ModuleSP &module_sp, |
| DataBufferSP& dataSP, |
| const FileSpec* file, |
| addr_t offset, |
| addr_t length) : |
| ObjectFile (module_sp, file, offset, length, dataSP), |
| 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); |
| uint32_t offset = 0; |
| |
| if (ParseDOSHeader()) |
| { |
| offset = m_dos_header.e_lfanew; |
| uint32_t pe_signature = m_data.GetU32 (&offset); |
| if (pe_signature != IMAGE_NT_SIGNATURE) |
| return false; |
| if (ParseCOFFHeader(&offset)) |
| { |
| if (m_coff_header.hdrsize > 0) |
| ParseCOFFOptionalHeader(&offset); |
| ParseSectionHeaders (offset); |
| } |
| StreamFile s(stdout, false);// REMOVE THIS LINE!!! |
| Dump(&s);// REMOVE THIS LINE!!! |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| |
| ByteOrder |
| ObjectFilePECOFF::GetByteOrder () const |
| { |
| return eByteOrderLittle; |
| } |
| |
| bool |
| ObjectFilePECOFF::IsExecutable() const |
| { |
| return (m_coff_header.flags & IMAGE_FILE_DLL) == 0; |
| } |
| |
| size_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 () |
| { |
| bool success = false; |
| uint32_t offset = 0; |
| success = m_data.ValidOffsetForDataOfSize(0, sizeof(m_dos_header)); |
| |
| if (success) |
| { |
| m_dos_header.e_magic = m_data.GetU16(&offset); // Magic number |
| success = m_dos_header.e_magic == IMAGE_DOS_SIGNATURE; |
| |
| if (success) |
| { |
| m_dos_header.e_cblp = m_data.GetU16(&offset); // Bytes on last page of file |
| m_dos_header.e_cp = m_data.GetU16(&offset); // Pages in file |
| m_dos_header.e_crlc = m_data.GetU16(&offset); // Relocations |
| m_dos_header.e_cparhdr = m_data.GetU16(&offset); // Size of header in paragraphs |
| m_dos_header.e_minalloc = m_data.GetU16(&offset); // Minimum extra paragraphs needed |
| m_dos_header.e_maxalloc = m_data.GetU16(&offset); // Maximum extra paragraphs needed |
| m_dos_header.e_ss = m_data.GetU16(&offset); // Initial (relative) SS value |
| m_dos_header.e_sp = m_data.GetU16(&offset); // Initial SP value |
| m_dos_header.e_csum = m_data.GetU16(&offset); // Checksum |
| m_dos_header.e_ip = m_data.GetU16(&offset); // Initial IP value |
| m_dos_header.e_cs = m_data.GetU16(&offset); // Initial (relative) CS value |
| m_dos_header.e_lfarlc = m_data.GetU16(&offset); // File address of relocation table |
| m_dos_header.e_ovno = m_data.GetU16(&offset); // Overlay number |
| |
| m_dos_header.e_res[0] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res[1] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res[2] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res[3] = m_data.GetU16(&offset); // Reserved words |
| |
| m_dos_header.e_oemid = m_data.GetU16(&offset); // OEM identifier (for e_oeminfo) |
| m_dos_header.e_oeminfo = m_data.GetU16(&offset); // OEM information; e_oemid specific |
| m_dos_header.e_res2[0] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[1] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[2] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[3] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[4] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[5] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[6] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[7] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[8] = m_data.GetU16(&offset); // Reserved words |
| m_dos_header.e_res2[9] = m_data.GetU16(&offset); // Reserved words |
| |
| m_dos_header.e_lfanew = m_data.GetU32(&offset); // File address of new exe header |
| } |
| } |
| if (!success) |
| memset(&m_dos_header, 0, sizeof(m_dos_header)); |
| return success; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // ParserCOFFHeader |
| //---------------------------------------------------------------------- |
| bool |
| ObjectFilePECOFF::ParseCOFFHeader(uint32_t* offset_ptr) |
| { |
| bool success = m_data.ValidOffsetForDataOfSize (*offset_ptr, sizeof(m_coff_header)); |
| if (success) |
| { |
| m_coff_header.machine = m_data.GetU16(offset_ptr); |
| m_coff_header.nsects = m_data.GetU16(offset_ptr); |
| m_coff_header.modtime = m_data.GetU32(offset_ptr); |
| m_coff_header.symoff = m_data.GetU32(offset_ptr); |
| m_coff_header.nsyms = m_data.GetU32(offset_ptr); |
| m_coff_header.hdrsize = m_data.GetU16(offset_ptr); |
| m_coff_header.flags = m_data.GetU16(offset_ptr); |
| } |
| if (!success) |
| memset(&m_coff_header, 0, sizeof(m_coff_header)); |
| return success; |
| } |
| |
| bool |
| ObjectFilePECOFF::ParseCOFFOptionalHeader(uint32_t* offset_ptr) |
| { |
| bool success = false; |
| const uint32_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); |
| } |
| } |
| } |
| } |
| // 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); |
| |
| uint32_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] == '/') |
| { |
| uint32_t stroff = strtoul(§.name[1], NULL, 10); |
| uint32_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 = sizeof(section_header_t); |
| 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); |
| uint32_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 + 4, strtab_size)); |
| DataExtractor strtab_data (strtab_data_sp, GetByteOrder(), addr_byte_size); |
| |
| 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); |
| Address symbol_addr(sect_list->GetSectionAtIndex(symbol.sect-1), symbol.value); |
| symbols[i].GetMangled ().SetValue (symbol_name.c_str(), symbol_name[0]=='_' && symbol_name[1] == 'Z'); |
| symbols[i].GetAddress() = symbol_addr; |
| |
| if (symbol.naux > 0) |
| i += symbol.naux; |
| } |
| |
| } |
| } |
| } |
| return m_symtab_ap.get(); |
| |
| } |
| |
| SectionList * |
| ObjectFilePECOFF::GetSectionList() |
| { |
| ModuleSP module_sp(GetModule()); |
| if (module_sp) |
| { |
| lldb_private::Mutex::Locker locker(module_sp->GetMutex()); |
| if (m_sections_ap.get() == NULL) |
| { |
| m_sections_ap.reset(new SectionList()); |
| 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"); |
| SectionType section_type = eSectionTypeOther; |
| if (m_sect_headers[idx].flags & 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 & 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 & 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 (m_sect_headers[idx].flags & IMAGE_SCN_CNT_CODE) |
| { |
| section_type = eSectionTypeCode; |
| } |
| else if (m_sect_headers[idx].flags & IMAGE_SCN_CNT_INITIALIZED_DATA) |
| { |
| section_type = eSectionTypeData; |
| } |
| else if (m_sect_headers[idx].flags & 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 |
| 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_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 the file |
| m_sect_headers[idx].flags)); // Flags for this section |
| |
| //section_sp->SetIsEncrypted (segment_is_encrypted); |
| |
| m_sections_ap->AddSection(section_sp); |
| } |
| } |
| } |
| return m_sections_ap.get(); |
| } |
| |
| 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: ", this); |
| s->Indent(); |
| s->PutCString("ObjectFilePECOFF"); |
| |
| ArchSpec header_arch; |
| GetArchitecture (header_arch); |
| |
| *s << ", file = '" << m_file << "', arch = " << header_arch.GetArchitectureName() << "\n"; |
| |
| if (m_sections_ap.get()) |
| m_sections_ap->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%16.16llx\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%16.16llx\n", header.stack_reserve_size); |
| s->Printf (" stack_commit_size = 0x%16.16llx\n", header.stack_commit_size); |
| s->Printf (" heap_reserve_size = 0x%16.16llx\n", header.heap_reserve_size); |
| s->Printf (" heap_commit_size = 0x%16.16llx\n", header.heap_commit_size); |
| s->Printf (" loader_flags = 0x%8.8x\n", header.loader_flags); |
| s->Printf (" num_data_dir_entries = 0x%8.8zx\n", 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); |
| } |
| } |
| |
| static bool |
| COFFMachineToMachCPU (uint16_t machine, ArchSpec &arch) |
| { |
| switch (machine) |
| { |
| case IMAGE_FILE_MACHINE_AMD64: |
| case IMAGE_FILE_MACHINE_IA64: |
| arch.SetArchitecture (eArchTypeMachO, |
| llvm::MachO::CPUTypeX86_64, |
| llvm::MachO::CPUSubType_X86_64_ALL); |
| return true; |
| |
| case IMAGE_FILE_MACHINE_I386: |
| arch.SetArchitecture (eArchTypeMachO, |
| llvm::MachO::CPUTypeI386, |
| llvm::MachO::CPUSubType_I386_ALL); |
| return true; |
| |
| case IMAGE_FILE_MACHINE_POWERPC: |
| case IMAGE_FILE_MACHINE_POWERPCFP: |
| arch.SetArchitecture (eArchTypeMachO, |
| llvm::MachO::CPUTypePowerPC, |
| llvm::MachO::CPUSubType_POWERPC_ALL); |
| return true; |
| case IMAGE_FILE_MACHINE_ARM: |
| case IMAGE_FILE_MACHINE_THUMB: |
| arch.SetArchitecture (eArchTypeMachO, |
| llvm::MachO::CPUTypeARM, |
| llvm::MachO::CPUSubType_ARM_V7); |
| return true; |
| } |
| return false; |
| } |
| bool |
| ObjectFilePECOFF::GetArchitecture (ArchSpec &arch) |
| { |
| // For index zero return our cpu type |
| return COFFMachineToMachCPU (m_coff_header.machine, arch); |
| } |
| |
| ObjectFile::Type |
| ObjectFilePECOFF::CalculateType() |
| { |
| if (m_coff_header.machine != 0) |
| { |
| if ((m_coff_header.flags & IMAGE_FILE_DLL) == 0) |
| return eTypeExecutable; |
| else |
| return eTypeSharedLibrary; |
| } |
| return eTypeExecutable; |
| } |
| |
| ObjectFile::Strata |
| ObjectFilePECOFF::CalculateStrata() |
| { |
| return eStrataUser; |
| } |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| const char * |
| ObjectFilePECOFF::GetPluginName() |
| { |
| return "ObjectFilePECOFF"; |
| } |
| |
| const char * |
| ObjectFilePECOFF::GetShortPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| ObjectFilePECOFF::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
