1/* Copyright (C) 1999-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Andreas Jaeger <aj@suse.de>, 1999 and
4 Jakub Jelinek <jakub@redhat.com>, 2000.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20
21int process_elf32_file (const char *file_name, const char *lib, int *flag,
22 unsigned int *osversion, char **soname,
23 void *file_contents, size_t file_length);
24int process_elf64_file (const char *file_name, const char *lib, int *flag,
25 unsigned int *osversion, char **soname,
26 void *file_contents, size_t file_length);
27
28/* Returns 0 if everything is ok, != 0 in case of error. */
29int
30process_elf_file (const char *file_name, const char *lib, int *flag,
31 unsigned int *osversion, char **soname, void *file_contents,
32 size_t file_length)
33{
34 ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
35 int ret, file_flag = 0;
36
37 switch (elf_header->e_machine)
38 {
39 case EM_X86_64:
40 if (elf_header->e_ident[EI_CLASS] == ELFCLASS64)
41 /* X86-64 64bit libraries are always libc.so.6+. */
42 file_flag = FLAG_X8664_LIB64|FLAG_ELF_LIBC6;
43 else
44 /* X32 libraries are always libc.so.6+. */
45 file_flag = FLAG_X8664_LIBX32|FLAG_ELF_LIBC6;
46 break;
47#ifndef SKIP_EM_IA_64
48 case EM_IA_64:
49 if (elf_header->e_ident[EI_CLASS] == ELFCLASS64)
50 {
51 /* IA64 64bit libraries are always libc.so.6+. */
52 file_flag = FLAG_IA64_LIB64|FLAG_ELF_LIBC6;
53 break;
54 }
55 goto failed;
56#endif
57 case EM_386:
58 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
59 break;
60 /* Fall through. */
61 default:
62#ifndef SKIP_EM_IA_64
63failed:
64#endif
65 error (0, 0, _("%s is for unknown machine %d.\n"),
66 file_name, elf_header->e_machine);
67 return 1;
68 }
69
70 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
71 ret = process_elf32_file (file_name, lib, flag, osversion, soname,
72 file_contents, file_length);
73 else
74 ret = process_elf64_file (file_name, lib, flag, osversion, soname,
75 file_contents, file_length);
76
77 if (!ret && file_flag)
78 *flag = file_flag;
79
80 return ret;
81}
82
83#undef __ELF_NATIVE_CLASS
84#undef process_elf_file
85#define process_elf_file process_elf32_file
86#define __ELF_NATIVE_CLASS 32
87#include "elf/readelflib.c"
88
89#undef __ELF_NATIVE_CLASS
90#undef process_elf_file
91#define process_elf_file process_elf64_file
92#define __ELF_NATIVE_CLASS 64
93#include "elf/readelflib.c"
94