1  /* Copyright (C) 1999-2023 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 *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 *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.  */
      27  int
      28  process_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    ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
      33    int ret;
      34  
      35    if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
      36      {
      37        Elf32_Ehdr *elf32_header = (Elf32_Ehdr *) elf_header;
      38  
      39        ret = process_elf32_file (file_name, lib, flag, isa_level, soname,
      40  				file_contents, file_length);
      41  
      42        if (!ret && EF_ARM_EABI_VERSION (elf32_header->e_flags) == EF_ARM_EABI_VER5)
      43  	{
      44  	  if (elf32_header->e_flags & EF_ARM_ABI_FLOAT_HARD)
      45  	    *flag = FLAG_ARM_LIBHF|FLAG_ELF_LIBC6;
      46  	  else if (elf32_header->e_flags & EF_ARM_ABI_FLOAT_SOFT)
      47  	    *flag = FLAG_ARM_LIBSF|FLAG_ELF_LIBC6;
      48  	  else
      49  	    /* We must assume the unmarked objects are compatible
      50  	       with all ABI variants. Such objects may have been
      51  	       generated in a transitional period when the ABI
      52  	       tags were not added to all objects.  */
      53  	    *flag = FLAG_ELF_LIBC6;
      54  	}
      55      }
      56    else
      57      {
      58        ret = process_elf64_file (file_name, lib, flag, isa_level, soname,
      59  				file_contents, file_length);
      60        /* AArch64 libraries are always libc.so.6+.  */
      61        if (!ret)
      62  	*flag = FLAG_AARCH64_LIB64|FLAG_ELF_LIBC6;
      63      }
      64    return ret;
      65  }
      66  
      67  #undef __ELF_NATIVE_CLASS
      68  #undef process_elf_file
      69  #define process_elf_file process_elf32_file
      70  #define __ELF_NATIVE_CLASS 32
      71  #include "elf/readelflib.c"
      72  
      73  #undef __ELF_NATIVE_CLASS
      74  #undef process_elf_file
      75  #define process_elf_file process_elf64_file
      76  #define __ELF_NATIVE_CLASS 64
      77  #include "elf/readelflib.c"