forked from KolibriOS/kolibrios
854 lines
37 KiB
C
854 lines
37 KiB
C
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/**************************** elf.h ***********************************
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* Author: Agner Fog
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* Date created: 2006-07-18
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* Last modified: 2009-07-15
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* Project: objconv
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* Module: elf.h
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* Description:
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* Header file for definition of structures in 32 and 64 bit ELF object file
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* format.
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*
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* Copyright 2006-2009 GNU General Public License http://www.gnu.org/licenses
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*****************************************************************************/
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#ifndef ELF_H
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#define ELF_H
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/********************** FILE HEADER **********************/
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struct Elf32_Ehdr {
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uint8 e_ident[16]; // Magic number and other info
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uint16 e_type; // Object file type
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uint16 e_machine; // Architecture
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uint32 e_version; // Object file version
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uint32 e_entry; // Entry point virtual address
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uint32 e_phoff; // Program header table file offset
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uint32 e_shoff; // Section header table file offset
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uint32 e_flags; // Processor-specific flags
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uint16 e_ehsize; // ELF header size in bytes
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uint16 e_phentsize; // Program header table entry size
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uint16 e_phnum; // Program header table entry count
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uint16 e_shentsize; // Section header table entry size
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uint16 e_shnum; // Section header table entry count
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uint16 e_shstrndx; // Section header string table index
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};
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struct Elf64_Ehdr {
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uint8 e_ident[16]; // Magic number and other info
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uint16 e_type; // Object file type
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uint16 e_machine; // Architecture
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uint32 e_version; // Object file version
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uint64 e_entry; // Entry point virtual address
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uint64 e_phoff; // Program header table file offset
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uint64 e_shoff; // Section header table file offset
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uint32 e_flags; // Processor-specific flags
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uint16 e_ehsize; // ELF header size in bytes
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uint16 e_phentsize; // Program header table entry size
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uint16 e_phnum; // Program header table entry count
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uint16 e_shentsize; // Section header table entry size
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uint16 e_shnum; // Section header table entry count
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uint16 e_shstrndx; // Section header string table index
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};
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/* Fields in the e_ident array. The EI_* macros are indices into the
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array. The macros under each EI_* macro are the values the byte
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may have. */
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/* Conglomeration of the identification bytes, for easy testing as a word. */
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#define ELFMAG "\177ELF"
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#define EI_CLASS 4 /* File class byte index */
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#define ELFCLASSNONE 0 /* Invalid class */
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#define ELFCLASS32 1 /* 32-bit objects */
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#define ELFCLASS64 2 /* 64-bit objects */
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#define ELFCLASSNUM 3
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#define EI_DATA 5 /* Data encoding byte index */
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#define ELFDATANONE 0 /* Invalid data encoding */
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#define ELFDATA2LSB 1 /* 2's complement, little endian */
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#define ELFDATA2MSB 2 /* 2's complement, big endian */
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#define ELFDATANUM 3
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#define EI_VERSION 6 /* File version byte index */
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/* Value must be EV_CURRENT */
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#define EI_OSABI 7 /* OS ABI identification */
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#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
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#define ELFOSABI_HPUX 1 /* HP-UX */
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#define ELFOSABI_ARM 97 /* ARM */
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#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
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#define EI_ABIVERSION 8 /* ABI version */
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#define EI_PAD 9 /* Byte index of padding bytes */
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/* Legal values for e_type (object file type). */
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#define ET_NONE 0 /* No file type */
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#define ET_REL 1 /* Relocatable file */
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#define ET_EXEC 2 /* Executable file */
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#define ET_DYN 3 /* Shared object file */
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#define ET_CORE 4 /* Core file */
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#define ET_NUM 5 /* Number of defined types */
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#define ET_LOOS 0xfe00 /* OS-specific range start */
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#define ET_HIOS 0xfeff /* OS-specific range end */
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#define ET_LOPROC 0xff00 /* Processor-specific range start */
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#define ET_HIPROC 0xffff /* Processor-specific range end */
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/* Legal values for e_machine (architecture). */
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#define EM_NONE 0 /* No machine */
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#define EM_M32 1 /* AT&T WE 32100 */
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#define EM_SPARC 2 /* SUN SPARC */
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#define EM_386 3 /* Intel 80386 */
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#define EM_68K 4 /* Motorola m68k family */
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#define EM_88K 5 /* Motorola m88k family */
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#define EM_860 7 /* Intel 80860 */
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#define EM_MIPS 8 /* MIPS R3000 big-endian */
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#define EM_S370 9 /* IBM System/370 */
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#define EM_MIPS_RS3_LE 10 /* MIPS R3000 little-endian */
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#define EM_PARISC 15 /* HPPA */
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#define EM_VPP500 17 /* Fujitsu VPP500 */
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#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
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#define EM_960 19 /* Intel 80960 */
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#define EM_PPC 20 /* PowerPC */
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#define EM_PPC64 21 /* PowerPC 64-bit */
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#define EM_S390 22 /* IBM S390 */
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#define EM_V800 36 /* NEC V800 series */
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#define EM_FR20 37 /* Fujitsu FR20 */
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#define EM_RH32 38 /* TRW RH-32 */
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#define EM_RCE 39 /* Motorola RCE */
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#define EM_ARM 40 /* ARM */
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#define EM_FAKE_ALPHA 41 /* Digital Alpha */
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#define EM_SH 42 /* Hitachi SH */
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#define EM_SPARCV9 43 /* SPARC v9 64-bit */
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#define EM_TRICORE 44 /* Siemens Tricore */
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#define EM_ARC 45 /* Argonaut RISC Core */
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#define EM_H8_300 46 /* Hitachi H8/300 */
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#define EM_H8_300H 47 /* Hitachi H8/300H */
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#define EM_H8S 48 /* Hitachi H8S */
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#define EM_H8_500 49 /* Hitachi H8/500 */
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#define EM_IA_64 50 /* Intel Merced */
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#define EM_MIPS_X 51 /* Stanford MIPS-X */
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#define EM_COLDFIRE 52 /* Motorola Coldfire */
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#define EM_68HC12 53 /* Motorola M68HC12 */
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#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/
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#define EM_PCP 55 /* Siemens PCP */
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#define EM_NCPU 56 /* Sony nCPU embeeded RISC */
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#define EM_NDR1 57 /* Denso NDR1 microprocessor */
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#define EM_STARCORE 58 /* Motorola Start*Core processor */
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#define EM_ME16 59 /* Toyota ME16 processor */
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#define EM_ST100 60 /* STMicroelectronic ST100 processor */
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#define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/
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#define EM_X86_64 62 /* AMD x86-64 architecture */
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#define EM_PDSP 63 /* Sony DSP Processor */
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#define EM_FX66 66 /* Siemens FX66 microcontroller */
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#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */
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#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */
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#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */
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#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */
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#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */
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#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */
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#define EM_SVX 73 /* Silicon Graphics SVx */
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#define EM_AT19 74 /* STMicroelectronics ST19 8 bit mc */
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#define EM_VAX 75 /* Digital VAX */
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#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
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#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded processor */
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#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */
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#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */
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#define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */
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#define EM_HUANY 81 /* Harvard University machine-independent object files */
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#define EM_PRISM 82 /* SiTera Prism */
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#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
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#define EM_FR30 84 /* Fujitsu FR30 */
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#define EM_D10V 85 /* Mitsubishi D10V */
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#define EM_D30V 86 /* Mitsubishi D30V */
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#define EM_V850 87 /* NEC v850 */
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#define EM_M32R 88 /* Mitsubishi M32R */
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#define EM_MN10300 89 /* Matsushita MN10300 */
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#define EM_MN10200 90 /* Matsushita MN10200 */
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#define EM_PJ 91 /* picoJava */
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#define EM_NUM 92
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#define EM_ALPHA 0x9026
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/* Legal values for e_version (version). */
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#define EV_NONE 0 /* Invalid ELF version */
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#define EV_CURRENT 1 /* Current version */
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#define EV_NUM 2
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/* Section header. */
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struct Elf32_Shdr {
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uint32 sh_name; // Section name (string tbl index)
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uint32 sh_type; // Section type
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uint32 sh_flags; // Section flags
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uint32 sh_addr; // Section virtual addr at execution
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uint32 sh_offset; // Section file offset
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uint32 sh_size; // Section size in bytes
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uint32 sh_link; // Link to another section
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uint32 sh_info; // Additional section information
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uint32 sh_addralign; // Section alignment
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uint32 sh_entsize; // Entry size if section holds table
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};
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struct Elf64_Shdr {
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uint32 sh_name; // Section name (string tbl index)
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uint32 sh_type; // Section type
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uint64 sh_flags; // Section flags
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uint64 sh_addr; // Section virtual addr at execution
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uint64 sh_offset; // Section file offset
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uint64 sh_size; // Section size in bytes
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uint32 sh_link; // Link to another section
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uint32 sh_info; // Additional section information
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uint64 sh_addralign; // Section alignment
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uint64 sh_entsize; // Entry size if section holds table
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};
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/* Special section indices. */
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#define SHN_UNDEF 0 // Undefined section
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#define SHN_LORESERVE ((int16)0xff00) // Start of reserved indices
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#define SHN_LOPROC ((int16)0xff00) // Start of processor-specific
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#define SHN_HIPROC ((int16)0xff1f) // End of processor-specific
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#define SHN_LOOS ((int16)0xff20) // Start of OS-specific
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#define SHN_HIOS ((int16)0xff3f) // End of OS-specific
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#define SHN_ABS ((int16)0xfff1) // Associated symbol is absolute
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#define SHN_COMMON ((int16)0xfff2) // Associated symbol is common
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#define SHN_XINDEX ((int16)0xffff) // Index is in extra table
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#define SHN_HIRESERVE ((int16)0xffff) // End of reserved indices
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// Legal values for sh_type (section type).
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#define SHT_NULL 0 // Section header table entry unused
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#define SHT_PROGBITS 1 // Program data
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#define SHT_SYMTAB 2 // Symbol table
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#define SHT_STRTAB 3 // String table
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#define SHT_RELA 4 // Relocation entries with addends. Warning: Works only in 64 bit mode in my tests!
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#define SHT_HASH 5 // Symbol hash table
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#define SHT_DYNAMIC 6 // Dynamic linking information
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#define SHT_NOTE 7 // Notes
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#define SHT_NOBITS 8 // Program space with no data (bss)
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#define SHT_REL 9 // Relocation entries, no addends
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#define SHT_SHLIB 10 // Reserved
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#define SHT_DYNSYM 11 // Dynamic linker symbol table
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#define SHT_INIT_ARRAY 14 // Array of constructors
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#define SHT_FINI_ARRAY 15 // Array of destructors
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#define SHT_PREINIT_ARRAY 16 // Array of pre-constructors
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#define SHT_GROUP 17 // Section group
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#define SHT_SYMTAB_SHNDX 18 // Extended section indeces
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#define SHT_NUM 19 // Number of defined types.
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#define SHT_LOOS 0x60000000 // Start OS-specific
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#define SHT_CHECKSUM 0x6ffffff8 // Checksum for DSO content.
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#define SHT_LOSUNW 0x6ffffffa // Sun-specific low bound.
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#define SHT_SUNW_move 0x6ffffffa
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#define SHT_SUNW_COMDAT 0x6ffffffb
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#define SHT_SUNW_syminfo 0x6ffffffc
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#define SHT_GNU_verdef 0x6ffffffd // Version definition section.
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#define SHT_GNU_verneed 0x6ffffffe // Version needs section.
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#define SHT_GNU_versym 0x6fffffff // Version symbol table.
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#define SHT_HISUNW 0x6fffffff // Sun-specific high bound.
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#define SHT_HIOS 0x6fffffff // End OS-specific type
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#define SHT_LOPROC 0x70000000 // Start of processor-specific
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#define SHT_HIPROC 0x7fffffff // End of processor-specific
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#define SHT_LOUSER 0x80000000 // Start of application-specific
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#define SHT_HIUSER 0x8fffffff // End of application-specific
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#define SHT_REMOVE_ME 0xffffff99 // Specific to objconv program: Removed debug or exception handler section
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// Legal values for sh_flags (section flags).
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#define SHF_WRITE (1 << 0) // Writable
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#define SHF_ALLOC (1 << 1) // Occupies memory during execution
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#define SHF_EXECINSTR (1 << 2) // Executable
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#define SHF_MERGE (1 << 4) // Might be merged
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#define SHF_STRINGS (1 << 5) // Contains nul-terminated strings
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#define SHF_INFO_LINK (1 << 6) // `sh_info' contains SHT index
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#define SHF_LINK_ORDER (1 << 7) // Preserve order after combining
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#define SHF_OS_NONCONFORMING (1 << 8) // Non-standard OS specific handling required
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#define SHF_MASKOS 0x0ff00000 // OS-specific.
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#define SHF_MASKPROC 0xf0000000 // Processor-specific
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/* Section group handling. */
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#define GRP_COMDAT 0x1 /* Mark group as COMDAT. */
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/* Symbol table entry. */
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struct Elf32_Sym {
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uint32 st_name; // Symbol name (string tbl index)
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uint32 st_value; // Symbol value
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uint32 st_size; // Symbol size
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uint8 st_type: 4, // Symbol type
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st_bind: 4; // Symbol binding
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uint8 st_other; // Symbol visibility
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uint16 st_shndx; // Section index
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};
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struct Elf64_Sym {
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uint32 st_name; // Symbol name (string tbl index)
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uint8 st_type: 4, // Symbol type
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st_bind: 4; // Symbol binding
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uint8 st_other; // Symbol visibility
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uint16 st_shndx; // Section index
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uint64 st_value; // Symbol value
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uint64 st_size; // Symbol size
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};
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/* The syminfo section if available contains additional information about
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every dynamic symbol. */
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struct Elf32_Syminfo {
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uint16 si_boundto; /* Direct bindings, symbol bound to */
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uint16 si_flags; /* Per symbol flags */
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};
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struct Elf64_Syminfo {
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uint16 si_boundto; /* Direct bindings, symbol bound to */
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uint16 si_flags; /* Per symbol flags */
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};
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/* Possible values for si_boundto. */
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#define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */
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#define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */
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#define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */
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/* Possible bitmasks for si_flags. */
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#define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */
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#define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */
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#define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */
|
||
|
|
#define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy loaded */
|
||
|
|
/* Syminfo version values. */
|
||
|
|
#define SYMINFO_NONE 0
|
||
|
|
#define SYMINFO_CURRENT 1
|
||
|
|
#define SYMINFO_NUM 2
|
||
|
|
|
||
|
|
|
||
|
|
/* Special section index. */
|
||
|
|
|
||
|
|
#define SHN_UNDEF 0 /* No section, undefined symbol. */
|
||
|
|
|
||
|
|
// How to extract and insert information held in the st_info field.
|
||
|
|
// Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field.
|
||
|
|
|
||
|
|
//#define ELF32_ST_BIND(val) (((uint8) (val)) >> 4)
|
||
|
|
//#define ELF32_ST_TYPE(val) ((val) & 0xf)
|
||
|
|
//#define ELF32_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xf))
|
||
|
|
|
||
|
|
// Legal values for ST_BIND subfield of st_info (symbol binding).
|
||
|
|
|
||
|
|
#define STB_LOCAL 0 // Local symbol
|
||
|
|
#define STB_GLOBAL 1 // Global symbol
|
||
|
|
#define STB_WEAK 2 // Weak symbol
|
||
|
|
#define STB_NUM 3 // Number of defined types.
|
||
|
|
#define STB_LOOS 10 // Start of OS-specific
|
||
|
|
#define STB_HIOS 12 // End of OS-specific
|
||
|
|
#define STB_LOPROC 13 // Start of processor-specific
|
||
|
|
#define STB_HIPROC 15 // End of processor-specific
|
||
|
|
|
||
|
|
// Legal values for ST_TYPE subfield of st_info (symbol type).
|
||
|
|
|
||
|
|
#define STT_NOTYPE 0 // Symbol type is unspecified
|
||
|
|
#define STT_OBJECT 1 // Symbol is a data object
|
||
|
|
#define STT_FUNC 2 // Symbol is a code object
|
||
|
|
#define STT_SECTION 3 // Symbol associated with a section
|
||
|
|
#define STT_FILE 4 // Symbol's name is file name
|
||
|
|
#define STT_COMMON 5 // Symbol is a common data object
|
||
|
|
#define STT_NUM 6 // Number of defined types.
|
||
|
|
#define STT_LOOS 10 // Start of OS-specific
|
||
|
|
#define STT_GNU_IFUNC 10 // Symbol is an indirect code object (function dispatcher)
|
||
|
|
#define STT_HIOS 12 // End of OS-specific
|
||
|
|
#define STT_LOPROC 13 // Start of processor-specific
|
||
|
|
#define STT_HIPROC 15 // End of processor-specific
|
||
|
|
|
||
|
|
|
||
|
|
/* Symbol table indices are found in the hash buckets and chain table
|
||
|
|
of a symbol hash table section. This special index value indicates
|
||
|
|
the end of a chain, meaning no further symbols are found in that bucket. */
|
||
|
|
|
||
|
|
#define STN_UNDEF 0 /* End of a chain. */
|
||
|
|
|
||
|
|
|
||
|
|
/* How to extract and insert information held in the st_other field. */
|
||
|
|
|
||
|
|
#define ELF32_ST_VISIBILITY(o) ((o) & 0x03)
|
||
|
|
|
||
|
|
/* For ELF64 the definitions are the same. */
|
||
|
|
#define ELF64_ST_VISIBILITY(o) ELF32_ST_VISIBILITY (o)
|
||
|
|
|
||
|
|
/* Symbol visibility specification encoded in the st_other field. */
|
||
|
|
#define STV_DEFAULT 0 /* Default symbol visibility rules */
|
||
|
|
#define STV_INTERNAL 1 /* Processor specific hidden class */
|
||
|
|
#define STV_HIDDEN 2 /* Sym unavailable in other modules */
|
||
|
|
#define STV_PROTECTED 3 /* Not preemptible, not exported */
|
||
|
|
|
||
|
|
|
||
|
|
// Relocation table entry structures
|
||
|
|
// How to extract and insert information held in the r_info field.
|
||
|
|
//#define ELF32_R_SYM(val) ((val) >> 8)
|
||
|
|
//#define ELF32_R_TYPE(val) ((val) & 0xff)
|
||
|
|
//#define ELF32_R_INFO(sym,type) (((sym) << 8) + ((type) & 0xff))
|
||
|
|
|
||
|
|
//#define ELF64_R_SYM(i) ((uint32)((i) >> 32))
|
||
|
|
//#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
|
||
|
|
//#define ELF64_R_INFO(sym,type) ((((uint64) (sym)) << 32) + (type))
|
||
|
|
|
||
|
|
|
||
|
|
// Relocation table entry without addend (in section of type SHT_REL)
|
||
|
|
struct Elf32_Rel {
|
||
|
|
uint32 r_offset; // Address
|
||
|
|
uint32 r_type: 8, // Relocation type
|
||
|
|
r_sym: 24; // Symbol index
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Rel {
|
||
|
|
uint64 r_offset; // Address
|
||
|
|
uint32 r_type; // Relocation type
|
||
|
|
uint32 r_sym; // Symbol index
|
||
|
|
};
|
||
|
|
|
||
|
|
// Relocation table entry with addend (in section of type SHT_RELA)
|
||
|
|
|
||
|
|
// Warning: Elf32_Rela doesn't work in any of the systems I have tried.
|
||
|
|
// Use Elf32_Rel instead with addend in relocated field.
|
||
|
|
// Use Elf64_Rela in 64 bit mode. Elf64_Rel not accepted?
|
||
|
|
|
||
|
|
struct Elf32_Rela {
|
||
|
|
uint32 r_offset; // Address
|
||
|
|
uint32 r_type: 8, // Relocation type
|
||
|
|
r_sym: 24; // Symbol index
|
||
|
|
int32 r_addend; // Addend
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Rela {
|
||
|
|
uint64 r_offset; // Address
|
||
|
|
uint32 r_type; // Relocation type
|
||
|
|
uint32 r_sym; // Symbol index
|
||
|
|
int64 r_addend; // Addend
|
||
|
|
};
|
||
|
|
|
||
|
|
// i386 Relocation types
|
||
|
|
|
||
|
|
#define R_386_NONE 0 // No reloc
|
||
|
|
#define R_386_32 1 // Direct 32 bit
|
||
|
|
#define R_386_PC32 2 // Self-relative 32 bit (not EIP relative in the sense used in COFF files)
|
||
|
|
#define R_386_GOT32 3 // 32 bit GOT entry
|
||
|
|
#define R_386_PLT32 4 // 32 bit PLT address
|
||
|
|
#define R_386_COPY 5 // Copy symbol at runtime
|
||
|
|
#define R_386_GLOB_DAT 6 // Create GOT entry
|
||
|
|
#define R_386_JMP_SLOT 7 // Create PLT entry
|
||
|
|
#define R_386_RELATIVE 8 // Adjust by program base
|
||
|
|
#define R_386_GOTOFF 9 // 32 bit offset to GOT
|
||
|
|
#define R_386_GOTPC 10 // 32 bit self relative offset to GOT
|
||
|
|
#define R_386_IRELATIVE 42 // Reference to PLT entry of indirect function (STT_GNU_IFUNC)
|
||
|
|
//#define R_386_NUM 11 // Number of entries
|
||
|
|
|
||
|
|
// AMD x86-64 relocation types
|
||
|
|
#define R_X86_64_NONE 0 // No reloc
|
||
|
|
#define R_X86_64_64 1 // Direct 64 bit
|
||
|
|
#define R_X86_64_PC32 2 // Self relative 32 bit signed (not RIP relative in the sense used in COFF files)
|
||
|
|
#define R_X86_64_GOT32 3 // 32 bit GOT entry
|
||
|
|
#define R_X86_64_PLT32 4 // 32 bit PLT address
|
||
|
|
#define R_X86_64_COPY 5 // Copy symbol at runtime
|
||
|
|
#define R_X86_64_GLOB_DAT 6 // Create GOT entry
|
||
|
|
#define R_X86_64_JUMP_SLOT 7 // Create PLT entry
|
||
|
|
#define R_X86_64_RELATIVE 8 // Adjust by program base
|
||
|
|
#define R_X86_64_GOTPCREL 9 // 32 bit signed self relative offset to GOT
|
||
|
|
#define R_X86_64_32 10 // Direct 32 bit zero extended
|
||
|
|
#define R_X86_64_32S 11 // Direct 32 bit sign extended
|
||
|
|
#define R_X86_64_16 12 // Direct 16 bit zero extended
|
||
|
|
#define R_X86_64_PC16 13 // 16 bit sign extended self relative
|
||
|
|
#define R_X86_64_8 14 // Direct 8 bit sign extended
|
||
|
|
#define R_X86_64_PC8 15 // 8 bit sign extended self relative
|
||
|
|
#define R_X86_64_IRELATIVE 37 // Reference to PLT entry of indirect function (STT_GNU_IFUNC)
|
||
|
|
//#define R_X86_64_NUM 16 // Number of entries
|
||
|
|
// Pseudo-record when ELF is used as intermediary between COFF and MachO:
|
||
|
|
#define R_UNSUPPORTED_IMAGEREL 21 // Image-relative not supported
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// Program segment header.
|
||
|
|
|
||
|
|
struct Elf32_Phdr {
|
||
|
|
uint32 p_type; /* Segment type */
|
||
|
|
uint32 p_offset; /* Segment file offset */
|
||
|
|
uint32 p_vaddr; /* Segment virtual address */
|
||
|
|
uint32 p_paddr; /* Segment physical address */
|
||
|
|
uint32 p_filesz; /* Segment size in file */
|
||
|
|
uint32 p_memsz; /* Segment size in memory */
|
||
|
|
uint32 p_flags; /* Segment flags */
|
||
|
|
uint32 p_align; /* Segment alignment */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Phdr {
|
||
|
|
uint32 p_type; /* Segment type */
|
||
|
|
uint32 p_flags; /* Segment flags */
|
||
|
|
uint64 p_offset; /* Segment file offset */
|
||
|
|
uint64 p_vaddr; /* Segment virtual address */
|
||
|
|
uint64 p_paddr; /* Segment physical address */
|
||
|
|
uint64 p_filesz; /* Segment size in file */
|
||
|
|
uint64 p_memsz; /* Segment size in memory */
|
||
|
|
uint64 p_align; /* Segment alignment */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Legal values for p_type (segment type). */
|
||
|
|
|
||
|
|
#define PT_NULL 0 /* Program header table entry unused */
|
||
|
|
#define PT_LOAD 1 /* Loadable program segment */
|
||
|
|
#define PT_DYNAMIC 2 /* Dynamic linking information */
|
||
|
|
#define PT_INTERP 3 /* Program interpreter */
|
||
|
|
#define PT_NOTE 4 /* Auxiliary information */
|
||
|
|
#define PT_SHLIB 5 /* Reserved */
|
||
|
|
#define PT_PHDR 6 /* Entry for header table itself */
|
||
|
|
#define PT_NUM 7 /* Number of defined types */
|
||
|
|
#define PT_LOOS 0x60000000 /* Start of OS-specific */
|
||
|
|
#define PT_HIOS 0x6fffffff /* End of OS-specific */
|
||
|
|
#define PT_LOPROC 0x70000000 /* Start of processor-specific */
|
||
|
|
#define PT_HIPROC 0x7fffffff /* End of processor-specific */
|
||
|
|
|
||
|
|
/* Legal values for p_flags (segment flags). */
|
||
|
|
|
||
|
|
#define PF_X (1 << 0) /* Segment is executable */
|
||
|
|
#define PF_W (1 << 1) /* Segment is writable */
|
||
|
|
#define PF_R (1 << 2) /* Segment is readable */
|
||
|
|
#define PF_MASKOS 0x0ff00000 /* OS-specific */
|
||
|
|
#define PF_MASKPROC 0xf0000000 /* Processor-specific */
|
||
|
|
|
||
|
|
/* Legal values for note segment descriptor types for core files. */
|
||
|
|
|
||
|
|
#define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
|
||
|
|
#define NT_FPREGSET 2 /* Contains copy of fpregset struct */
|
||
|
|
#define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */
|
||
|
|
#define NT_PRXREG 4 /* Contains copy of prxregset struct */
|
||
|
|
#define NT_PLATFORM 5 /* String from sysinfo(SI_PLATFORM) */
|
||
|
|
#define NT_AUXV 6 /* Contains copy of auxv array */
|
||
|
|
#define NT_GWINDOWS 7 /* Contains copy of gwindows struct */
|
||
|
|
#define NT_PSTATUS 10 /* Contains copy of pstatus struct */
|
||
|
|
#define NT_PSINFO 13 /* Contains copy of psinfo struct */
|
||
|
|
#define NT_PRCRED 14 /* Contains copy of prcred struct */
|
||
|
|
#define NT_UTSNAME 15 /* Contains copy of utsname struct */
|
||
|
|
#define NT_LWPSTATUS 16 /* Contains copy of lwpstatus struct */
|
||
|
|
#define NT_LWPSINFO 17 /* Contains copy of lwpinfo struct */
|
||
|
|
#define NT_PRFPXREG 20 /* Contains copy of fprxregset struct*/
|
||
|
|
|
||
|
|
/* Legal values for the note segment descriptor types for object files. */
|
||
|
|
|
||
|
|
#define NT_VERSION 1 /* Contains a version string. */
|
||
|
|
|
||
|
|
|
||
|
|
/* Dynamic section entry. */
|
||
|
|
|
||
|
|
struct Elf32_Dyn {
|
||
|
|
int32 d_tag; /* Dynamic entry type */
|
||
|
|
union {
|
||
|
|
uint32 d_val; /* Integer value */
|
||
|
|
uint32 d_ptr; /* Address value */
|
||
|
|
} d_un;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Dyn {
|
||
|
|
int64 d_tag; /* Dynamic entry type */
|
||
|
|
union {
|
||
|
|
uint64 d_val; /* Integer value */
|
||
|
|
uint64 d_ptr; /* Address value */
|
||
|
|
} d_un;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Legal values for d_tag (dynamic entry type). */
|
||
|
|
|
||
|
|
#define DT_NULL 0 /* Marks end of dynamic section */
|
||
|
|
#define DT_NEEDED 1 /* Name of needed library */
|
||
|
|
#define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */
|
||
|
|
#define DT_PLTGOT 3 /* Processor defined value */
|
||
|
|
#define DT_HASH 4 /* Address of symbol hash table */
|
||
|
|
#define DT_STRTAB 5 /* Address of string table */
|
||
|
|
#define DT_SYMTAB 6 /* Address of symbol table */
|
||
|
|
#define DT_RELA 7 /* Address of Rela relocs */
|
||
|
|
#define DT_RELASZ 8 /* Total size of Rela relocs */
|
||
|
|
#define DT_RELAENT 9 /* Size of one Rela reloc */
|
||
|
|
#define DT_STRSZ 10 /* Size of string table */
|
||
|
|
#define DT_SYMENT 11 /* Size of one symbol table entry */
|
||
|
|
#define DT_INIT 12 /* Address of init function */
|
||
|
|
#define DT_FINI 13 /* Address of termination function */
|
||
|
|
#define DT_SONAME 14 /* Name of shared object */
|
||
|
|
#define DT_RPATH 15 /* Library search path (deprecated) */
|
||
|
|
#define DT_SYMBOLIC 16 /* Start symbol search here */
|
||
|
|
#define DT_REL 17 /* Address of Rel relocs */
|
||
|
|
#define DT_RELSZ 18 /* Total size of Rel relocs */
|
||
|
|
#define DT_RELENT 19 /* Size of one Rel reloc */
|
||
|
|
#define DT_PLTREL 20 /* Type of reloc in PLT */
|
||
|
|
#define DT_DEBUG 21 /* For debugging; unspecified */
|
||
|
|
#define DT_TEXTREL 22 /* Reloc might modify .text */
|
||
|
|
#define DT_JMPREL 23 /* Address of PLT relocs */
|
||
|
|
#define DT_BIND_NOW 24 /* Process relocations of object */
|
||
|
|
#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */
|
||
|
|
#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */
|
||
|
|
#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */
|
||
|
|
#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */
|
||
|
|
#define DT_RUNPATH 29 /* Library search path */
|
||
|
|
#define DT_FLAGS 30 /* Flags for the object being loaded */
|
||
|
|
#define DT_ENCODING 32 /* Start of encoded range */
|
||
|
|
#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/
|
||
|
|
#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */
|
||
|
|
#define DT_NUM 34 /* Number used */
|
||
|
|
#define DT_LOOS 0x60000000 /* Start of OS-specific */
|
||
|
|
#define DT_HIOS 0x6fffffff /* End of OS-specific */
|
||
|
|
#define DT_LOPROC 0x70000000 /* Start of processor-specific */
|
||
|
|
#define DT_HIPROC 0x7fffffff /* End of processor-specific */
|
||
|
|
#define DT_PROCNUM DT_MIPS_NUM /* Most used by any processor */
|
||
|
|
|
||
|
|
/* DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
|
||
|
|
Dyn.d_un.d_val field of the Elf*_Dyn structure. This follows Sun's
|
||
|
|
approach. */
|
||
|
|
#define DT_VALRNGLO 0x6ffffd00
|
||
|
|
#define DT_CHECKSUM 0x6ffffdf8
|
||
|
|
#define DT_PLTPADSZ 0x6ffffdf9
|
||
|
|
#define DT_MOVEENT 0x6ffffdfa
|
||
|
|
#define DT_MOVESZ 0x6ffffdfb
|
||
|
|
#define DT_FEATURE_1 0x6ffffdfc /* Feature selection (DTF_*). */
|
||
|
|
#define DT_POSFLAG_1 0x6ffffdfd /* Flags for DT_* entries, effecting the following DT_* entry. */
|
||
|
|
#define DT_SYMINSZ 0x6ffffdfe /* Size of syminfo table (in bytes) */
|
||
|
|
#define DT_SYMINENT 0x6ffffdff /* Entry size of syminfo */
|
||
|
|
#define DT_VALRNGHI 0x6ffffdff
|
||
|
|
|
||
|
|
/* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
|
||
|
|
Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
|
||
|
|
|
||
|
|
If any adjustment is made to the ELF object after it has been
|
||
|
|
built these entries will need to be adjusted. */
|
||
|
|
#define DT_ADDRRNGLO 0x6ffffe00
|
||
|
|
#define DT_SYMINFO 0x6ffffeff /* syminfo table */
|
||
|
|
#define DT_ADDRRNGHI 0x6ffffeff
|
||
|
|
|
||
|
|
/* The versioning entry types. The next are defined as part of the GNU extension. */
|
||
|
|
#define DT_VERSYM 0x6ffffff0
|
||
|
|
|
||
|
|
#define DT_RELACOUNT 0x6ffffff9
|
||
|
|
#define DT_RELCOUNT 0x6ffffffa
|
||
|
|
|
||
|
|
/* These were chosen by Sun. */
|
||
|
|
#define DT_FLAGS_1 0x6ffffffb /* State flags, see DF_1_* below. */
|
||
|
|
#define DT_VERDEF 0x6ffffffc /* Address of version definition table */
|
||
|
|
#define DT_VERDEFNUM 0x6ffffffd /* Number of version definitions */
|
||
|
|
#define DT_VERNEED 0x6ffffffe /* Address of table with needed versions */
|
||
|
|
#define DT_VERNEEDNUM 0x6fffffff /* Number of needed versions */
|
||
|
|
#define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */
|
||
|
|
#define DT_VERSIONTAGNUM 16
|
||
|
|
|
||
|
|
/* Sun added these machine-independent extensions in the "processor-specific"
|
||
|
|
range. Be compatible. */
|
||
|
|
#define DT_AUXILIARY 0x7ffffffd /* Shared object to load before self */
|
||
|
|
#define DT_FILTER 0x7fffffff /* Shared object to get values from */
|
||
|
|
#define DT_EXTRATAGIDX(tag) ((uint32)-((int32) (tag) <<1>>1)-1)
|
||
|
|
#define DT_EXTRANUM 3
|
||
|
|
|
||
|
|
/* Values of `d_un.d_val' in the DT_FLAGS entry. */
|
||
|
|
#define DF_ORIGIN 0x00000001 /* Object may use DF_ORIGIN */
|
||
|
|
#define DF_SYMBOLIC 0x00000002 /* Symbol resolutions starts here */
|
||
|
|
#define DF_TEXTREL 0x00000004 /* Object contains text relocations */
|
||
|
|
#define DF_BIND_NOW 0x00000008 /* No lazy binding for this object */
|
||
|
|
|
||
|
|
/* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1
|
||
|
|
entry in the dynamic section. */
|
||
|
|
#define DF_1_NOW 0x00000001 /* Set RTLD_NOW for this object. */
|
||
|
|
#define DF_1_GLOBAL 0x00000002 /* Set RTLD_GLOBAL for this object. */
|
||
|
|
#define DF_1_GROUP 0x00000004 /* Set RTLD_GROUP for this object. */
|
||
|
|
#define DF_1_NODELETE 0x00000008 /* Set RTLD_NODELETE for this object.*/
|
||
|
|
#define DF_1_LOADFLTR 0x00000010 /* Trigger filtee loading at runtime.*/
|
||
|
|
#define DF_1_INITFIRST 0x00000020 /* Set RTLD_INITFIRST for this object*/
|
||
|
|
#define DF_1_NOOPEN 0x00000040 /* Set RTLD_NOOPEN for this object. */
|
||
|
|
#define DF_1_ORIGIN 0x00000080 /* $ORIGIN must be handled. */
|
||
|
|
#define DF_1_DIRECT 0x00000100 /* Direct binding enabled. */
|
||
|
|
#define DF_1_TRANS 0x00000200
|
||
|
|
#define DF_1_INTERPOSE 0x00000400 /* Object is used to interpose. */
|
||
|
|
#define DF_1_NODEFLIB 0x00000800 /* Ignore default lib search path. */
|
||
|
|
#define DF_1_NODUMP 0x00001000
|
||
|
|
#define DF_1_CONFALT 0x00002000
|
||
|
|
#define DF_1_ENDFILTEE 0x00004000
|
||
|
|
|
||
|
|
/* Flags for the feature selection in DT_FEATURE_1. */
|
||
|
|
#define DTF_1_PARINIT 0x00000001
|
||
|
|
#define DTF_1_CONFEXP 0x00000002
|
||
|
|
|
||
|
|
/* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry. */
|
||
|
|
#define DF_P1_LAZYLOAD 0x00000001 /* Lazyload following object. */
|
||
|
|
#define DF_P1_GROUPPERM 0x00000002 /* Symbols from next object are not generally available. */
|
||
|
|
|
||
|
|
/* Version definition sections. */
|
||
|
|
|
||
|
|
struct Elf32_Verdef {
|
||
|
|
uint16 vd_version; /* Version revision */
|
||
|
|
uint16 vd_flags; /* Version information */
|
||
|
|
uint16 vd_ndx; /* Version Index */
|
||
|
|
uint16 vd_cnt; /* Number of associated aux entries */
|
||
|
|
uint32 vd_hash; /* Version name hash value */
|
||
|
|
uint32 vd_aux; /* Offset in bytes to verdaux array */
|
||
|
|
uint32 vd_next; /* Offset in bytes to next verdef entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Verdef {
|
||
|
|
uint16 vd_version; /* Version revision */
|
||
|
|
uint16 vd_flags; /* Version information */
|
||
|
|
uint16 vd_ndx; /* Version Index */
|
||
|
|
uint16 vd_cnt; /* Number of associated aux entries */
|
||
|
|
uint32 vd_hash; /* Version name hash value */
|
||
|
|
uint32 vd_aux; /* Offset in bytes to verdaux array */
|
||
|
|
uint32 vd_next; /* Offset in bytes to next verdef entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Legal values for vd_version (version revision). */
|
||
|
|
#define VER_DEF_NONE 0 /* No version */
|
||
|
|
#define VER_DEF_CURRENT 1 /* Current version */
|
||
|
|
#define VER_DEF_NUM 2 /* Given version number */
|
||
|
|
|
||
|
|
/* Legal values for vd_flags (version information flags). */
|
||
|
|
#define VER_FLG_BASE 0x1 /* Version definition of file itself */
|
||
|
|
#define VER_FLG_WEAK 0x2 /* Weak version identifier */
|
||
|
|
|
||
|
|
/* Auxialiary version information. */
|
||
|
|
|
||
|
|
struct Elf32_Verdaux {
|
||
|
|
uint32 vda_name; /* Version or dependency names */
|
||
|
|
uint32 vda_next; /* Offset in bytes to next verdaux entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Verdaux {
|
||
|
|
uint32 vda_name; /* Version or dependency names */
|
||
|
|
uint32 vda_next; /* Offset in bytes to next verdaux entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Version dependency section. */
|
||
|
|
|
||
|
|
struct Elf32_Verneed {
|
||
|
|
uint16 vn_version; /* Version of structure */
|
||
|
|
uint16 vn_cnt; /* Number of associated aux entries */
|
||
|
|
uint32 vn_file; /* Offset of filename for this dependency */
|
||
|
|
uint32 vn_aux; /* Offset in bytes to vernaux array */
|
||
|
|
uint32 vn_next; /* Offset in bytes to next verneed entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Verneed {
|
||
|
|
uint16 vn_version; /* Version of structure */
|
||
|
|
uint16 vn_cnt; /* Number of associated aux entries */
|
||
|
|
uint32 vn_file; /* Offset of filename for this dependency */
|
||
|
|
uint32 vn_aux; /* Offset in bytes to vernaux array */
|
||
|
|
uint32 vn_next; /* Offset in bytes to next verneed entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Legal values for vn_version (version revision). */
|
||
|
|
#define VER_NEED_NONE 0 /* No version */
|
||
|
|
#define VER_NEED_CURRENT 1 /* Current version */
|
||
|
|
#define VER_NEED_NUM 2 /* Given version number */
|
||
|
|
|
||
|
|
/* Auxiliary needed version information. */
|
||
|
|
|
||
|
|
struct Elf32_Vernaux {
|
||
|
|
uint32 vna_hash; /* Hash value of dependency name */
|
||
|
|
uint16 vna_flags; /* Dependency specific information */
|
||
|
|
uint16 vna_other; /* Unused */
|
||
|
|
uint32 vna_name; /* Dependency name string offset */
|
||
|
|
uint32 vna_next; /* Offset in bytes to next vernaux entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Vernaux {
|
||
|
|
uint32 vna_hash; /* Hash value of dependency name */
|
||
|
|
uint16 vna_flags; /* Dependency specific information */
|
||
|
|
uint16 vna_other; /* Unused */
|
||
|
|
uint32 vna_name; /* Dependency name string offset */
|
||
|
|
uint32 vna_next; /* Offset in bytes to next vernaux entry */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Legal values for vna_flags. */
|
||
|
|
#define VER_FLG_WEAK 0x2 /* Weak version identifier */
|
||
|
|
|
||
|
|
|
||
|
|
/* Note section contents. Each entry in the note section begins with
|
||
|
|
a header of a fixed form. */
|
||
|
|
|
||
|
|
struct Elf32_Nhdr {
|
||
|
|
uint32 n_namesz; /* Length of the note's name. */
|
||
|
|
uint32 n_descsz; /* Length of the note's descriptor. */
|
||
|
|
uint32 n_type; /* Type of the note. */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Nhdr {
|
||
|
|
uint32 n_namesz; /* Length of the note's name. */
|
||
|
|
uint32 n_descsz; /* Length of the note's descriptor. */
|
||
|
|
uint32 n_type; /* Type of the note. */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Known names of notes. */
|
||
|
|
|
||
|
|
/* Solaris entries in the note section have this name. */
|
||
|
|
#define ELF_NOTE_SOLARIS "SUNW Solaris"
|
||
|
|
|
||
|
|
/* Note entries for GNU systems have this name. */
|
||
|
|
#define ELF_NOTE_GNU "GNU"
|
||
|
|
|
||
|
|
|
||
|
|
/* Defined types of notes for Solaris. */
|
||
|
|
|
||
|
|
/* Value of descriptor (one word) is desired pagesize for the binary. */
|
||
|
|
#define ELF_NOTE_PAGESIZE_HINT 1
|
||
|
|
|
||
|
|
|
||
|
|
/* Defined note types for GNU systems. */
|
||
|
|
|
||
|
|
/* ABI information. The descriptor consists of words:
|
||
|
|
word 0: OS descriptor
|
||
|
|
word 1: major version of the ABI
|
||
|
|
word 2: minor version of the ABI
|
||
|
|
word 3: subminor version of the ABI
|
||
|
|
*/
|
||
|
|
#define ELF_NOTE_ABI 1
|
||
|
|
|
||
|
|
/* Known OSes. These value can appear in word 0 of an ELF_NOTE_ABI
|
||
|
|
note section entry. */
|
||
|
|
#define ELF_NOTE_OS_LINUX 0
|
||
|
|
#define ELF_NOTE_OS_GNU 1
|
||
|
|
#define ELF_NOTE_OS_SOLARIS2 2
|
||
|
|
|
||
|
|
|
||
|
|
/* Move records. */
|
||
|
|
struct Elf32_Move {
|
||
|
|
uint64 m_value; /* Symbol value. */
|
||
|
|
uint32 m_info; /* Size and index. */
|
||
|
|
uint32 m_poffset; /* Symbol offset. */
|
||
|
|
uint16 m_repeat; /* Repeat count. */
|
||
|
|
uint16 m_stride; /* Stride info. */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Elf64_Move {
|
||
|
|
uint64 m_value; /* Symbol value. */
|
||
|
|
uint64 m_info; /* Size and index. */
|
||
|
|
uint64 m_poffset; /* Symbol offset. */
|
||
|
|
uint16 m_repeat; /* Repeat count. */
|
||
|
|
uint16 m_stride; /* Stride info. */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Macro to construct move records. */
|
||
|
|
#define ELF32_M_SYM(info) ((info) >> 8)
|
||
|
|
#define ELF32_M_SIZE(info) ((uint8) (info))
|
||
|
|
#define ELF32_M_INFO(sym, size) (((sym) << 8) + (uint8) (size))
|
||
|
|
|
||
|
|
#define ELF64_M_SYM(info) ELF32_M_SYM (info)
|
||
|
|
#define ELF64_M_SIZE(info) ELF32_M_SIZE (info)
|
||
|
|
#define ELF64_M_INFO(sym, size) ELF32_M_INFO (sym, size)
|
||
|
|
|
||
|
|
|
||
|
|
/********************** Strings **********************/
|
||
|
|
#define ELF_CONSTRUCTOR_NAME ".ctors" // Name of constructors segment
|
||
|
|
|
||
|
|
|
||
|
|
// Macros listing all word-size dependent structures, used as template parameter list
|
||
|
|
#define ELFSTRUCTURES TELF_Header, TELF_SectionHeader, TELF_Symbol, TELF_Relocation
|
||
|
|
#define ELF32STRUCTURES Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, Elf32_Rela
|
||
|
|
#define ELF64STRUCTURES Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, Elf64_Rela
|
||
|
|
|
||
|
|
#endif // #ifndef ELF_H
|