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