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
19 int process_elf32_file (const char *file_name, const char *lib,
20 int *flag, unsigned int *osversion,
21 unsigned int *isa_level, char **soname,
22 void *file_contents, size_t file_length);
23 int process_elf64_file (const char *file_name, const char *lib,
24 int *flag, unsigned int *osversion,
25 unsigned int *isa_level, char **soname,
26 void *file_contents, size_t file_length);
27
28 /* Returns 0 if everything is ok, != 0 in case of error. */
29 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)30 process_elf_file (const char *file_name, const char *lib, int *flag,
31 unsigned int *osversion, unsigned int *isa_level,
32 char **soname, void *file_contents, size_t file_length)
33 {
34 union
35 {
36 Elf64_Ehdr *eh64;
37 Elf32_Ehdr *eh32;
38 ElfW(Ehdr) *eh;
39 }
40 elf_header;
41 int ret;
42
43 elf_header.eh = file_contents;
44 if (elf_header.eh->e_ident [EI_CLASS] == ELFCLASS32)
45 {
46 ret = process_elf32_file (file_name, lib, flag, osversion, isa_level,
47 soname, file_contents, file_length);
48 if (!ret)
49 {
50 Elf32_Word flags = elf_header.eh32->e_flags;
51 int nan2008 = (flags & EF_MIPS_NAN2008) != 0;
52
53 /* n32 libraries are always libc.so.6+, o32 only if 2008 NaN. */
54 if ((flags & EF_MIPS_ABI2) != 0)
55 *flag = (nan2008 ? FLAG_MIPS64_LIBN32_NAN2008
56 : FLAG_MIPS64_LIBN32) | FLAG_ELF_LIBC6;
57 else if (nan2008)
58 *flag = FLAG_MIPS_LIB32_NAN2008 | FLAG_ELF_LIBC6;
59 }
60 }
61 else
62 {
63 ret = process_elf64_file (file_name, lib, flag, osversion, isa_level,
64 soname, file_contents, file_length);
65 /* n64 libraries are always libc.so.6+. */
66 if (!ret)
67 {
68 Elf64_Word flags = elf_header.eh64->e_flags;
69 int nan2008 = (flags & EF_MIPS_NAN2008) != 0;
70
71 *flag = (nan2008 ? FLAG_MIPS64_LIBN64_NAN2008
72 : FLAG_MIPS64_LIBN64) | FLAG_ELF_LIBC6;
73 }
74 }
75
76 return ret;
77 }
78
79 #undef __ELF_NATIVE_CLASS
80 #undef process_elf_file
81 #define process_elf_file process_elf32_file
82 #define __ELF_NATIVE_CLASS 32
83 #include "elf/readelflib.c"
84
85 #undef __ELF_NATIVE_CLASS
86 #undef process_elf_file
87 #define process_elf_file process_elf64_file
88 #define __ELF_NATIVE_CLASS 64
89 #include "elf/readelflib.c"
90