1/* Copyright (C) 1999-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18int process_elf32_file (const char *file_name, const char *lib,
19 int *flag, unsigned int *isa_level, char **soname,
20 void *file_contents, size_t file_length);
21int process_elf64_file (const char *file_name, const char *lib,
22 int *flag, unsigned int *isa_level, char **soname,
23 void *file_contents, size_t file_length);
24
25/* Returns 0 if everything is ok, != 0 in case of error. */
26int
27process_elf_file (const char *file_name, const char *lib, int *flag,
28 unsigned int *isa_level, char **soname, void *file_contents,
29 size_t file_length)
30{
31 ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
32 int ret, file_flag = 0;
33
34 switch (elf_header->e_machine)
35 {
36 case EM_X86_64:
37 if (elf_header->e_ident[EI_CLASS] == ELFCLASS64)
38 /* X86-64 64bit libraries are always libc.so.6+. */
39 file_flag = FLAG_X8664_LIB64|FLAG_ELF_LIBC6;
40 else
41 /* X32 libraries are always libc.so.6+. */
42 file_flag = FLAG_X8664_LIBX32|FLAG_ELF_LIBC6;
43 break;
44 case EM_386:
45 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
46 break;
47 /* Fall through. */
48 default:
49 error (status: 0, errnum: 0, _("%s is for unknown machine %d.\n"),
50 file_name, elf_header->e_machine);
51 return 1;
52 }
53
54 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
55 ret = process_elf32_file (file_name, lib, flag, isa_level, soname,
56 file_contents, file_length);
57 else
58 ret = process_elf64_file (file_name, lib, flag, isa_level, soname,
59 file_contents, file_length);
60
61 if (!ret && file_flag)
62 *flag = file_flag;
63
64 return ret;
65}
66
67#undef __ELF_NATIVE_CLASS
68#undef process_elf_file
69#define process_elf_file process_elf32_file
70#define __ELF_NATIVE_CLASS 32
71#include "elf/readelflib.c"
72
73#undef __ELF_NATIVE_CLASS
74#undef process_elf_file
75#define process_elf_file process_elf64_file
76#define __ELF_NATIVE_CLASS 64
77#include "elf/readelflib.c"
78

source code of glibc/sysdeps/x86/readelflib.c