sysdeps/gnu/ldsodefs.h

   1 /* Run-time dynamic linker data structures for loaded ELF shared objects.  GNU.
   2    Copyright (C) 2001-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _GNU_LDSODEFS_H
  20 #define _GNU_LDSODEFS_H 1
  21
  22 #include <elf.h>
  23 #include <libc-abis.h>
  24 #include <string.h>
  25
  26 /* Accept binaries which identify the binary as using GNU extensions.  */
  27 #define VALID_ELF_HEADER(hdr,exp,size)  (memcmp (hdr, exp, size) == 0   \
  28                                          || memcmp (hdr, expected2, size) == 0)
  29 #define VALID_ELF_OSABI(osabi)          (osabi == ELFOSABI_SYSV \
  30                                          || osabi == ELFOSABI_GNU)
  31 #define VALID_ELF_ABIVERSION(osabi,ver) \
  32   (ver == 0 || (osabi == ELFOSABI_GNU && ver < LIBC_ABI_MAX))
  33 #define MORE_ELF_HEADER_DATA \
  34   static const unsigned char expected2[EI_PAD] =        \
  35   {                                                     \
  36     [EI_MAG0] = ELFMAG0,                                \
  37     [EI_MAG1] = ELFMAG1,                                \
  38     [EI_MAG2] = ELFMAG2,                                \
  39     [EI_MAG3] = ELFMAG3,                                \
  40     [EI_CLASS] = ELFW(CLASS),                           \
  41     [EI_DATA] = byteorder,                              \
  42     [EI_VERSION] = EV_CURRENT,                          \
  43     [EI_OSABI] = ELFOSABI_GNU                           \
  44   }
  45
  46 #include_next <ldsodefs.h>
  47
  48 #endif /* _GNU_LDSODEFS_H */