1/* Copyright (C) 1999-2021 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
20int process_elf32_file (const char *file_name, const char *lib,
21 int *flag, unsigned int *osversion,
22 unsigned int *isa_level, char **soname,
23 void *file_contents, size_t file_length);
24int process_elf64_file (const char *file_name, const char *lib,
25 int *flag, unsigned int *osversion,
26 unsigned int *isa_level, char **soname,
27 void *file_contents, size_t file_length);
28
29/* Returns 0 if everything is ok, != 0 in case of error. */
30int
31process_elf_file (const char *file_name, const char *lib, int *flag,
32 unsigned int *osversion, unsigned int *isa_level,
33 char **soname, void *file_contents, size_t file_length)
34{
35 ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
36 int ret, file_flag = 0;
37
38 switch (elf_header->e_machine)
39 {
40 case EM_X86_64:
41 if (elf_header->e_ident[EI_CLASS] == ELFCLASS64)
42 /* X86-64 64bit libraries are always libc.so.6+. */
43 file_flag = FLAG_X8664_LIB64|FLAG_ELF_LIBC6;
44 else
45 /* X32 libraries are always libc.so.6+. */
46 file_flag = FLAG_X8664_LIBX32|FLAG_ELF_LIBC6;
47 break;
48#ifndef __x86_64__
49 case EM_IA_64:
50 if (elf_header->e_ident[EI_CLASS] == ELFCLASS64)
51 {
52 /* IA64 64bit libraries are always libc.so.6+. */
53 file_flag = FLAG_IA64_LIB64|FLAG_ELF_LIBC6;
54 break;
55 }
56 goto failed;
57#endif
58 case EM_386:
59 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
60 break;
61 /* Fall through. */
62 default:
63#ifndef __x86_64__
64failed:
65#endif
66 error (0, 0, _("%s is for unknown machine %d.\n"),
67 file_name, elf_header->e_machine);
68 return 1;
69 }
70
71 if (elf_header->e_ident[EI_CLASS] == ELFCLASS32)
72 ret = process_elf32_file (file_name, lib, flag, osversion, isa_level,
73 soname, file_contents, file_length);
74 else
75 ret = process_elf64_file (file_name, lib, flag, osversion, isa_level,
76 soname, file_contents, file_length);
77
78 if (!ret && file_flag)
79 *flag = file_flag;
80
81 return ret;
82}
83
84#undef __ELF_NATIVE_CLASS
85#undef process_elf_file
86#define process_elf_file process_elf32_file
87#define __ELF_NATIVE_CLASS 32
88#include "elf/readelflib.c"
89
90#undef __ELF_NATIVE_CLASS
91#undef process_elf_file
92#define process_elf_file process_elf64_file
93#define __ELF_NATIVE_CLASS 64
94#include "elf/readelflib.c"
95