1 /* BFD back-end for Intel/AMD x86_64 PECOFF files.
2 Copyright (C) 2006-2024 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 Written by Kai Tietz, OneVision Software GmbH&CoKg. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "libiberty.h"
27 #include "coff/x86_64.h"
28 #include "coff/internal.h"
29 #include "coff/pe.h"
30 #include "libcoff.h"
31
32 #define TARGET_SYM x86_64_pe_vec
33 #define TARGET_NAME "pe-x86-64"
34 #define TARGET_SYM_BIG x86_64_pe_big_vec
35 #define TARGET_NAME_BIG "pe-bigobj-x86-64"
36 #define COFF_WITH_PE
37 #define COFF_WITH_pex64
38 #define COFF_WITH_PE_BIGOBJ
39 #define PCRELOFFSET true
40 #if defined (USE_MINGW64_LEADING_UNDERSCORES)
41 #define TARGET_UNDERSCORE '_'
42 #else
43 #define TARGET_UNDERSCORE 0
44 #endif
45 #define COFF_LONG_SECTION_NAMES
46 #define COFF_SUPPORT_GNU_LINKONCE
47 #define COFF_LONG_FILENAMES
48
49 #define COFF_SECTION_ALIGNMENT_ENTRIES \
50 { COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
51 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
52 { COFF_SECTION_NAME_PARTIAL_MATCH (".data"), \
53 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
54 { COFF_SECTION_NAME_PARTIAL_MATCH (".rdata"), \
55 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
56 { COFF_SECTION_NAME_PARTIAL_MATCH (".text"), \
57 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
58 { COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
59 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
60 { COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
61 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
62 { COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
63 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
64 { COFF_SECTION_NAME_PARTIAL_MATCH (".zdebug"), \
65 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
66 { COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
67 COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
68
69 /* The function pex64_bfd_print_pdata is implemented in pei-x86_64.c
70 source, but has be extended to also handle pe objects. */
71 extern bool pex64_bfd_print_pdata (bfd *, void *);
72
73 #define bfd_pe_print_pdata pex64_bfd_print_pdata
74
75 static bool
pex64_link_add_symbols(bfd * abfd,struct bfd_link_info * info)76 pex64_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
77 {
78 if (bfd_link_pde (info)
79 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
80 {
81 /* NB: When linking Windows x86-64 relocatable object files to
82 generate ELF executable, create an indirect reference to
83 __executable_start for __ImageBase to support R_AMD64_IMAGEBASE
84 relocation which is relative to __ImageBase. */
85 struct bfd_link_hash_entry *h, *hi;
86 hi = bfd_link_hash_lookup (info->hash, "__ImageBase", true, false,
87 false);
88 if (hi->type == bfd_link_hash_new
89 || hi->type == bfd_link_hash_undefined
90 || hi->type == bfd_link_hash_undefweak)
91 {
92 h = bfd_link_hash_lookup (info->hash, "__executable_start",
93 true, false, true);
94 hi->type = bfd_link_hash_indirect;
95 hi->u.i.link = h;
96 }
97 }
98
99 return _bfd_coff_link_add_symbols (abfd, info);
100 }
101
102 #define coff_bfd_link_add_symbols pex64_link_add_symbols
103
104 #include "coff-x86_64.c"
105