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 */
49