ports/sysdeps/unix/sysv/linux/arm/readelflib.c

   1 /* Copyright (C) 1999-2014 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>, 1999.
   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    <http://www.gnu.org/licenses/>.  */
  19
  20
  21 int process_elf32_file (const char *file_name, const char *lib, int *flag,
  22                         unsigned int *osversion, char **soname,
  23                         void *file_contents, size_t file_length);
  24 int process_elf64_file (const char *file_name, const char *lib, int *flag,
  25                         unsigned int *osversion, 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
  30 process_elf_file (const char *file_name, const char *lib, int *flag,
  31                   unsigned int *osversion, char **soname, void *file_contents,
  32                   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, soname,
  42                                 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, soname,
  61                                 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"