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
18
19int process_elf32_file (const char *file_name, const char *lib,
20 int *flag, unsigned int *isa_level, char **soname,
21 void *file_contents, size_t file_length);
22int process_elf64_file (const char *file_name, const char *lib,
23 int *flag, unsigned int *isa_level, char **soname,
24 void *file_contents, size_t file_length);
25
26/* Returns 0 if everything is ok, != 0 in case of error. */
27int
28process_elf_file (const char *file_name, const char *lib, int *flag,
29 unsigned int *isa_level, char **soname, void *file_contents,
30 size_t file_length)
31{
32 union
33 {
34 Elf64_Ehdr *eh64;
35 Elf32_Ehdr *eh32;
36 ElfW(Ehdr) *eh;
37 }
38 elf_header;
39 int ret;
40
41 elf_header.eh = file_contents;
42 if (elf_header.eh->e_ident [EI_CLASS] == ELFCLASS32)
43 {
44 ret = process_elf32_file (file_name, lib, flag, isa_level, soname,
45 file_contents, file_length);
46 if (!ret)
47 {
48 Elf32_Word flags = elf_header.eh32->e_flags;
49 int nan2008 = (flags & EF_MIPS_NAN2008) != 0;
50
51 /* n32 libraries are always libc.so.6+, o32 only if 2008 NaN. */
52 if ((flags & EF_MIPS_ABI2) != 0)
53 *flag = (nan2008 ? FLAG_MIPS64_LIBN32_NAN2008
54 : FLAG_MIPS64_LIBN32) | FLAG_ELF_LIBC6;
55 else if (nan2008)
56 *flag = FLAG_MIPS_LIB32_NAN2008 | FLAG_ELF_LIBC6;
57 }
58 }
59 else
60 {
61 ret = process_elf64_file (file_name, lib, flag, isa_level, soname,
62 file_contents, file_length);
63 /* n64 libraries are always libc.so.6+. */
64 if (!ret)
65 {
66 Elf64_Word flags = elf_header.eh64->e_flags;
67 int nan2008 = (flags & EF_MIPS_NAN2008) != 0;
68
69 *flag = (nan2008 ? FLAG_MIPS64_LIBN64_NAN2008
70 : FLAG_MIPS64_LIBN64) | FLAG_ELF_LIBC6;
71 }
72 }
73
74 return ret;
75}
76
77#undef __ELF_NATIVE_CLASS
78#undef process_elf_file
79#define process_elf_file process_elf32_file
80#define __ELF_NATIVE_CLASS 32
81#include "elf/readelflib.c"
82
83#undef __ELF_NATIVE_CLASS
84#undef process_elf_file
85#define process_elf_file process_elf64_file
86#define __ELF_NATIVE_CLASS 64
87#include "elf/readelflib.c"
88

source code of glibc/sysdeps/unix/sysv/linux/mips/readelflib.c