461 lines
17 KiB
C
461 lines
17 KiB
C
/* ELF support for BFD.
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Copyright (C) 1991,92,93,94,95,96,97,98,1999 Free Software Foundation, Inc.
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Written by Fred Fish @ Cygnus Support, from information published
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in "UNIX System V Release 4, Programmers Guide: ANSI C and
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Programming Support Tools".
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* This file is part of ELF support for BFD, and contains the portions
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that are common to both the internal and external representations.
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For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory)
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and external (in-file) representations. */
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#ifndef _ELF_COMMON_H
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#define _ELF_COMMON_H
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/* Fields in e_ident[] */
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#define EI_MAG0 0 /* File identification byte 0 index */
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#define ELFMAG0 0x7F /* Magic number byte 0 */
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#define EI_MAG1 1 /* File identification byte 1 index */
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#define ELFMAG1 'E' /* Magic number byte 1 */
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#define EI_MAG2 2 /* File identification byte 2 index */
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#define ELFMAG2 'L' /* Magic number byte 2 */
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#define EI_MAG3 3 /* File identification byte 3 index */
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#define ELFMAG3 'F' /* Magic number byte 3 */
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#define EI_CLASS 4 /* File class */
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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 EI_DATA 5 /* Data encoding */
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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 EI_VERSION 6 /* File version */
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#define EI_OSABI 7 /* Operating System/ABI indication */
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#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
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#define ELFOSABI_HPUX 1 /* HP-UX operating system */
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#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
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#define ELFOSABI_ARM 97 /* ARM */
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#define EI_ABIVERSION 8 /* ABI version */
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#define EI_PAD 9 /* Start of padding bytes */
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/* Values for e_type, which identifies the 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_LOOS 0xFE00 /* Operating system-specific */
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#define ET_HIOS 0xFEFF /* Operating system-specific */
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#define ET_LOPROC 0xFF00 /* Processor-specific */
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#define ET_HIPROC 0xFFFF /* Processor-specific */
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/* Values for e_machine, which identifies the 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_486 6 /* Intel 80486 */
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#define EM_860 7 /* Intel 80860 */
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#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
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#define EM_S370 9 /* Amdahl */
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#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
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#define EM_PARISC 15 /* HPPA */
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#define EM_VPP550 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 /* 64-bit PowerPC */
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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 RH32 */
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#define EM_MCORE 39 /* Motorolla MCore */ /* May also be taken by Fujitsu MMA */
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#define EM_ARM 40 /* ARM */
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#define EM_OLD_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 embedded processor */
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#define EM_ARC 45 /* Argonaut RISC Core, Argonaut Technologies Inc. */
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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 MercedTM Processor */
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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_PJ 99 /* picoJava */
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/* If it is necessary to assign new unofficial EM_* values, please pick large
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random numbers (0x8523, 0xa7f2, etc.) to minimize the chances of collision
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with official or non-GNU unofficial values.
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NOTE: Do not just increment the most recent number by one.
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Somebody else somewhere will do exactly the same thing, and you
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will have a collision. Instead, pick a random number. */
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/* Cygnus PowerPC ELF backend. Written in the absence of an ABI. */
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#define EM_CYGNUS_POWERPC 0x9025
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/* Old version of Sparc v9, from before the ABI; this should be
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removed shortly. */
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#define EM_OLD_SPARCV9 11
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/* Old version of PowerPC, this should be removed shortly. */
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#define EM_PPC_OLD 17
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/* Cygnus ARC ELF backend. Written in the absence of an ABI. */
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#define EM_CYGNUS_ARC 0x9040
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/* Cygnus M32R ELF backend. Written in the absence of an ABI. */
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#define EM_CYGNUS_M32R 0x9041
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/* Alpha backend magic number. Written in the absence of an ABI. */
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#define EM_ALPHA 0x9026
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/* D10V backend magic number. Written in the absence of an ABI. */
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#define EM_CYGNUS_D10V 0x7650
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/* D30V backend magic number. Written in the absence of an ABI. */
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#define EM_CYGNUS_D30V 0x7676
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/* V850 backend magic number. Written in the absense of an ABI. */
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#define EM_CYGNUS_V850 0x9080
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/* mn10200 and mn10300 backend magic numbers.
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Written in the absense of an ABI. */
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#define EM_CYGNUS_MN10200 0xdead
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#define EM_CYGNUS_MN10300 0xbeef
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/* FR30 magic number - no EABI available. */
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#define EM_CYGNUS_FR30 0x3330
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/* See the above comment before you add a new EM_* value here. */
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/* Values for e_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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/* Values for program header, p_type field */
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#define PT_NULL 0 /* Program header table entry unused */
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#define PT_LOAD 1 /* Loadable program segment */
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#define PT_DYNAMIC 2 /* Dynamic linking information */
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#define PT_INTERP 3 /* Program interpreter */
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#define PT_NOTE 4 /* Auxiliary information */
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#define PT_SHLIB 5 /* Reserved, unspecified semantics */
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#define PT_PHDR 6 /* Entry for header table itself */
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#define PT_LOOS 0x60000000 /* OS-specific */
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#define PT_HIOS 0x6fffffff /* OS-specific */
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#define PT_LOPROC 0x70000000 /* Processor-specific */
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#define PT_HIPROC 0x7FFFFFFF /* Processor-specific */
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/* Program segment permissions, in program header p_flags field */
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#define PF_X (1 << 0) /* Segment is executable */
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#define PF_W (1 << 1) /* Segment is writable */
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#define PF_R (1 << 2) /* Segment is readable */
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#define PF_MASKOS 0x0F000000 /* OS-specific reserved bits */
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#define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */
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/* Values for section header, sh_type field */
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#define SHT_NULL 0 /* Section header table entry unused */
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#define SHT_PROGBITS 1 /* Program specific (private) data */
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#define SHT_SYMTAB 2 /* Link editing symbol table */
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#define SHT_STRTAB 3 /* A string table */
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#define SHT_RELA 4 /* Relocation entries with addends */
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#define SHT_HASH 5 /* A symbol hash table */
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#define SHT_DYNAMIC 6 /* Information for dynamic linking */
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#define SHT_NOTE 7 /* Information that marks file */
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#define SHT_NOBITS 8 /* Section occupies no space in file */
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#define SHT_REL 9 /* Relocation entries, no addends */
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#define SHT_SHLIB 10 /* Reserved, unspecified semantics */
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#define SHT_DYNSYM 11 /* Dynamic linking symbol table */
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#define SHT_LOOS 0x60000000 /* Operating system specific semantics, lo */
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#define SHT_HIOS 0x6fffffff /* Operating system specific semantics, hi */
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/* The next three section types are defined by Solaris, and are named
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SHT_SUNW*. We use them in GNU code, so we also define SHT_GNU*
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versions. */
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#define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */
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#define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */
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#define SHT_SUNW_versym 0x6fffffff /* Symbol versions */
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#define SHT_GNU_verdef SHT_SUNW_verdef
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#define SHT_GNU_verneed SHT_SUNW_verneed
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#define SHT_GNU_versym SHT_SUNW_versym
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#define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */
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#define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */
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#define SHT_LOUSER 0x80000000 /* Application-specific semantics */
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#define SHT_HIUSER 0x8FFFFFFF /* Application-specific semantics */
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/* Values for section header, sh_flags field */
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#define SHF_WRITE (1 << 0) /* Writable data during execution */
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#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
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#define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */
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#define SHF_MASKOS 0x0F000000 /* OS-specific semantics */
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#define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */
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/* Values of note segment descriptor types for core files. */
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#define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
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#define NT_FPREGSET 2 /* Contains copy of fpregset struct */
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#define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */
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#define NT_TASKSTRUCT 4 /* Contains copy of task struct */
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#define NT_PRXFPREG 0x46e62b7f /* Contains a user_xfpregs_struct;
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note name must be "LINUX". */
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/* Note segments for core files on dir-style procfs systems. */
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#define NT_PSTATUS 10 /* Has a struct pstatus */
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#define NT_FPREGS 12 /* Has a struct fpregset */
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#define NT_PSINFO 13 /* Has a struct psinfo */
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#define NT_LWPSTATUS 16 /* Has a struct lwpstatus_t */
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#define NT_LWPSINFO 17 /* Has a struct lwpsinfo_t */
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/* Values of note segment descriptor types for object files. */
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/* (Only for hppa right now. Should this be moved elsewhere?) */
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#define NT_VERSION 1 /* Contains a version string. */
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/* These three macros disassemble and assemble a symbol table st_info field,
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which contains the symbol binding and symbol type. The STB_ and STT_
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defines identify the binding and type. */
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#define ELF_ST_BIND(val) (((unsigned int)(val)) >> 4)
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#define ELF_ST_TYPE(val) ((val) & 0xF)
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#define ELF_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xF))
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#define STN_UNDEF 0 /* undefined symbol index */
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#define STB_LOCAL 0 /* Symbol not visible outside obj */
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#define STB_GLOBAL 1 /* Symbol visible outside obj */
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#define STB_WEAK 2 /* Like globals, lower precedence */
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#define STB_LOOS 10 /* OS-specific semantics */
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#define STB_HIOS 12 /* OS-specific semantics */
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#define STB_LOPROC 13 /* Application-specific semantics */
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#define STB_HIPROC 15 /* Application-specific semantics */
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#define STT_NOTYPE 0 /* Symbol type is unspecified */
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#define STT_OBJECT 1 /* Symbol is a data object */
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#define STT_FUNC 2 /* Symbol is a code object */
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#define STT_SECTION 3 /* Symbol associated with a section */
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#define STT_FILE 4 /* Symbol gives a file name */
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#define STT_LOOS 10 /* OS-specific semantics */
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#define STT_HIOS 12 /* OS-specific semantics */
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#define STT_LOPROC 13 /* Application-specific semantics */
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#define STT_HIPROC 15 /* Application-specific semantics */
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/* Special section indices, which may show up in st_shndx fields, among
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other places. */
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#define SHN_UNDEF 0 /* Undefined section reference */
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#define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */
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#define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */
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#define SHN_HIPROC 0xFF1F /* End range of appl-specific */
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#define SHN_LOOS 0xFF20 /* OS specific semantics, lo */
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#define SHN_HIOS 0xFF3F /* OS specific semantics, hi */
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#define SHN_ABS 0xFFF1 /* Associated symbol is absolute */
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#define SHN_COMMON 0xFFF2 /* Associated symbol is in common */
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#define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */
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/* relocation info handling macros */
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#define ELF32_R_SYM(i) ((i) >> 8)
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#define ELF32_R_TYPE(i) ((i) & 0xff)
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#define ELF32_R_INFO(s,t) (((s) << 8) + ((t) & 0xff))
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#define ELF64_R_SYM(i) ((i) >> 32)
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#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
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#define ELF64_R_INFO(s,t) (((bfd_vma) (s) << 32) + (bfd_vma) (t))
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/* Dynamic section tags */
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#define DT_NULL 0
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#define DT_NEEDED 1
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#define DT_PLTRELSZ 2
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#define DT_PLTGOT 3
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#define DT_HASH 4
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#define DT_STRTAB 5
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#define DT_SYMTAB 6
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#define DT_RELA 7
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#define DT_RELASZ 8
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#define DT_RELAENT 9
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#define DT_STRSZ 10
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#define DT_SYMENT 11
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#define DT_INIT 12
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#define DT_FINI 13
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#define DT_SONAME 14
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#define DT_RPATH 15
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#define DT_SYMBOLIC 16
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#define DT_REL 17
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#define DT_RELSZ 18
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#define DT_RELENT 19
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#define DT_PLTREL 20
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#define DT_DEBUG 21
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#define DT_TEXTREL 22
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#define DT_JMPREL 23
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#define DT_BIND_NOW 24
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#define DT_INIT_ARRAY 25
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#define DT_FINI_ARRAY 26
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#define DT_INIT_ARRAYSZ 27
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#define DT_FINI_ARRAYSZ 28
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#define DT_LOOS 0x60000000
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#define DT_HIOS 0x6fffffff
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/* The next four dynamic tags are used on Solaris. We support them
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everywhere. */
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#define DT_VALRNGLO 0x6ffffd00
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#define DT_PLTPADSZ 0x6ffffdf9
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#define DT_MOVEENT 0x6ffffdfa
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#define DT_MOVESZ 0x6ffffdfb
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#define DT_FEATURE_1 0x6ffffdfc
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#define DT_POSFLAG_1 0x6ffffdfd
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#define DT_SYMINSZ 0x6ffffdfe
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#define DT_SYMINENT 0x6ffffdff
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#define DT_VALRNGHI 0x6ffffdff
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#define DT_ADDRRNGLO 0x6ffffe00
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#define DT_SYMINFO 0x6ffffeff
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#define DT_ADDRRNGHI 0x6ffffeff
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#define DT_RELACOUNT 0x6ffffff9
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#define DT_RELCOUNT 0x6ffffffa
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#define DT_FLAGS_1 0x6ffffffb
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#define DT_VERDEF 0x6ffffffc
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#define DT_VERDEFNUM 0x6ffffffd
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#define DT_VERNEED 0x6ffffffe
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#define DT_VERNEEDNUM 0x6fffffff
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/* This tag is a GNU extension to the Solaris version scheme. */
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#define DT_VERSYM 0x6ffffff0
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#define DT_LOPROC 0x70000000
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#define DT_HIPROC 0x7fffffff
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/* These section tags are used on Solaris. We support them
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everywhere, and hope they do not conflict. */
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#define DT_AUXILIARY 0x7ffffffd
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#define DT_USED 0x7ffffffe
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#define DT_FILTER 0x7fffffff
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/* Values used in DT_FEATURE_1 .dynamic entry. */
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#define DTF_1_PARINIT 0x00000001
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/* Flag values used in the DT_POSFLAG_1 .dynamic entry. */
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#define DF_P1_LAZYLOAD 0x00000001
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#define DF_P1_GROUPPERM 0x00000002
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/* Flag value in in the DT_1_FLAGS .dynamic entry. */
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#define DF_1_NOW 0x00000001
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#define DF_1_GLOBAL 0x00000002
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#define DF_1_GROUP 0x00000004
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#define DF_1_NODELETE 0x00000008
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#define DF_1_LOADFLTR 0x00000010
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#define DF_1_INITFIRST 0x00000020
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#define DF_1_NOOPEN 0x00000040
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#define DF_1_ORIGIN 0x00000080
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#define DF_1_DIRECT 0x00000100
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#define DF_1_TRANS 0x00000200
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#define DF_1_INTERPOSE 0x00000400
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/* These constants are used for the version number of a Elf32_Verdef
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structure. */
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#define VER_DEF_NONE 0
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#define VER_DEF_CURRENT 1
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/* These constants appear in the vd_flags field of a Elf32_Verdef
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structure. */
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#define VER_FLG_BASE 0x1
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#define VER_FLG_WEAK 0x2
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/* These special constants can be found in an Elf32_Versym field. */
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#define VER_NDX_LOCAL 0
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#define VER_NDX_GLOBAL 1
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/* These constants are used for the version number of a Elf32_Verneed
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structure. */
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#define VER_NEED_NONE 0
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#define VER_NEED_CURRENT 1
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/* This flag appears in a Versym structure. It means that the symbol
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is hidden, and is only visible with an explicit version number.
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This is a GNU extension. */
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#define VERSYM_HIDDEN 0x8000
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/* This is the mask for the rest of the Versym information. */
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#define VERSYM_VERSION 0x7fff
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/* This is a special token which appears as part of a symbol name. It
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indictes that the rest of the name is actually the name of a
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version node, and is not part of the actual name. This is a GNU
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extension. For example, the symbol name `stat@ver2' is taken to
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mean the symbol `stat' in version `ver2'. */
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#define ELF_VER_CHR '@'
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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 */
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#define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy
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loaded */
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/* Syminfo version values. */
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#define SYMINFO_NONE 0
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#define SYMINFO_CURRENT 1
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#define SYMINFO_NUM 2
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#endif /* _ELF_COMMON_H */
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