1 /* Generic support for 32-bit ELF
2 Copyright (C) 1993-2016 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 (0 = byte, 1 = short, 2 = long) */
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 void
elf_generic_info_to_howto(bfd * abfd ATTRIBUTE_UNUSED,arelent * bfd_reloc,Elf_Internal_Rela * elf_reloc ATTRIBUTE_UNUSED)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 }
51
52 static void
elf_generic_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * bfd_reloc,Elf_Internal_Rela * elf_reloc ATTRIBUTE_UNUSED)53 elf_generic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
54 arelent *bfd_reloc,
55 Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
56 {
57 bfd_reloc->howto = &dummy;
58 }
59
60 static void
check_for_relocs(bfd * abfd,asection * o,void * failed)61 check_for_relocs (bfd * abfd, asection * o, void * failed)
62 {
63 if ((o->flags & SEC_RELOC) != 0)
64 {
65 Elf_Internal_Ehdr *ehdrp;
66
67 ehdrp = elf_elfheader (abfd);
68 _bfd_error_handler (_("%B: Relocations in generic ELF (EM: %d)"),
69 abfd, ehdrp->e_machine);
70
71 bfd_set_error (bfd_error_wrong_format);
72 * (bfd_boolean *) failed = TRUE;
73 }
74 }
75
76 static bfd_boolean
elf32_generic_link_add_symbols(bfd * abfd,struct bfd_link_info * info)77 elf32_generic_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
78 {
79 bfd_boolean failed = FALSE;
80
81 /* Check if there are any relocations. */
82 bfd_map_over_sections (abfd, check_for_relocs, & failed);
83
84 if (failed)
85 return FALSE;
86 return bfd_elf_link_add_symbols (abfd, info);
87 }
88
89 #define TARGET_LITTLE_SYM elf32_le_vec
90 #define TARGET_LITTLE_NAME "elf32-little"
91 #define TARGET_BIG_SYM elf32_be_vec
92 #define TARGET_BIG_NAME "elf32-big"
93 #define ELF_ARCH bfd_arch_unknown
94 #define ELF_MACHINE_CODE EM_NONE
95 #define ELF_MAXPAGESIZE 0x1
96 #define bfd_elf32_bfd_reloc_type_lookup bfd_default_reloc_type_lookup
97 #define bfd_elf32_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
98 #define bfd_elf32_bfd_link_add_symbols elf32_generic_link_add_symbols
99 #define elf_info_to_howto elf_generic_info_to_howto
100 #define elf_info_to_howto_rel elf_generic_info_to_howto_rel
101
102 #include "elf32-target.h"
103