1  /* Generic support for 64-bit ELF
       2     Copyright (C) 1993-2023 Free Software Foundation, Inc.
       3  
       4     This file is part of BFD, the Binary File Descriptor library.
       5  
       6     This program is free software; you can redistribute it and/or modify
       7     it under the terms of the GNU General Public License as published by
       8     the Free Software Foundation; either version 3 of the License, or
       9     (at your option) any later version.
      10  
      11     This program 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
      14     GNU General Public License for more details.
      15  
      16     You should have received a copy of the GNU General Public License
      17     along with this program; if not, write to the Free Software
      18     Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
      19     MA 02110-1301, USA.  */
      20  
      21  #include "sysdep.h"
      22  #include "bfd.h"
      23  #include "libbfd.h"
      24  #include "elf-bfd.h"
      25  
      26  /* This does not include any relocation information, but should be
      27     good enough for GDB or objdump to read the file.  */
      28  
      29  static reloc_howto_type dummy =
      30    HOWTO (0,			/* type */
      31  	 0,			/* rightshift */
      32  	 0,			/* size */
      33  	 0,			/* bitsize */
      34  	 false,			/* pc_relative */
      35  	 0,			/* bitpos */
      36  	 complain_overflow_dont, /* complain_on_overflow */
      37  	 NULL,			/* special_function */
      38  	 "UNKNOWN",		/* name */
      39  	 false,			/* partial_inplace */
      40  	 0,			/* src_mask */
      41  	 0,			/* dst_mask */
      42  	 false);		/* pcrel_offset */
      43  
      44  static bool
      45  elf_generic_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
      46  			   arelent *bfd_reloc,
      47  			   Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
      48  {
      49    bfd_reloc->howto = &dummy;
      50    return true;
      51  }
      52  
      53  static bool
      54  elf_generic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
      55  			       arelent *bfd_reloc,
      56  			       Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
      57  {
      58    bfd_reloc->howto = &dummy;
      59    return true;
      60  }
      61  
      62  static void
      63  check_for_relocs (bfd * abfd, asection * o, void * failed)
      64  {
      65    if ((o->flags & SEC_RELOC) != 0)
      66      {
      67        Elf_Internal_Ehdr *ehdrp;
      68  
      69        ehdrp = elf_elfheader (abfd);
      70        /* xgettext:c-format */
      71        _bfd_error_handler (_("%pB: Relocations in generic ELF (EM: %d)"),
      72  			  abfd, ehdrp->e_machine);
      73  
      74        bfd_set_error (bfd_error_wrong_format);
      75        * (bool *) failed = true;
      76      }
      77  }
      78  
      79  static bool
      80  elf64_generic_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
      81  {
      82    bool failed = false;
      83  
      84    /* Check if there are any relocations.  */
      85    bfd_map_over_sections (abfd, check_for_relocs, & failed);
      86  
      87    if (failed)
      88      return false;
      89    return bfd_elf_link_add_symbols (abfd, info);
      90  }
      91  
      92  #define TARGET_LITTLE_SYM		elf64_le_vec
      93  #define TARGET_LITTLE_NAME		"elf64-little"
      94  #define TARGET_BIG_SYM			elf64_be_vec
      95  #define TARGET_BIG_NAME			"elf64-big"
      96  #define ELF_ARCH			bfd_arch_unknown
      97  #define ELF_MACHINE_CODE		EM_NONE
      98  #define ELF_MAXPAGESIZE			0x1
      99  #define bfd_elf64_bfd_reloc_type_lookup bfd_default_reloc_type_lookup
     100  #define bfd_elf64_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
     101  #define bfd_elf64_bfd_link_add_symbols	elf64_generic_link_add_symbols
     102  #define elf_info_to_howto		elf_generic_info_to_howto
     103  #define elf_info_to_howto_rel		elf_generic_info_to_howto_rel
     104  
     105  #include "elf64-target.h"