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 ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
35 int ret;
36
37 if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
38 {
39 Elf32_Ehdr *elf32_header = (Elf32_Ehdr *) elf_header;
40
41 ret = process_elf32_file (file_name, lib, flag, osversion, isa_level,
42 soname, file_contents, file_length);
43
44 if (!ret && EF_ARM_EABI_VERSION (elf32_header->e_flags) == EF_ARM_EABI_VER5)
45 {
46 if (elf32_header->e_flags & EF_ARM_ABI_FLOAT_HARD)
47 *flag = FLAG_ARM_LIBHF|FLAG_ELF_LIBC6;
48 else if (elf32_header->e_flags & EF_ARM_ABI_FLOAT_SOFT)
49 *flag = FLAG_ARM_LIBSF|FLAG_ELF_LIBC6;
50 else
51 /* We must assume the unmarked objects are compatible
52 with all ABI variants. Such objects may have been
53 generated in a transitional period when the ABI
54 tags were not added to all objects. */
55 *flag = FLAG_ELF_LIBC6;
56 }
57 }
58 else
59 {
60 ret = process_elf64_file (file_name, lib, flag, osversion, isa_level,
61 soname, file_contents, file_length);
62 /* AArch64 libraries are always libc.so.6+. */
63 if (!ret)
64 *flag = FLAG_AARCH64_LIB64|FLAG_ELF_LIBC6;
65 }
66 return ret;
67 }
68
69 #undef __ELF_NATIVE_CLASS
70 #undef process_elf_file
71 #define process_elf_file process_elf32_file
72 #define __ELF_NATIVE_CLASS 32
73 #include "elf/readelflib.c"
74
75 #undef __ELF_NATIVE_CLASS
76 #undef process_elf_file
77 #define process_elf_file process_elf64_file
78 #define __ELF_NATIVE_CLASS 64
79 #include "elf/readelflib.c"
80