1/* BFD back-end for Intel/AMD x86_64 PECOFF files.
2   Copyright (C) 2006-2022 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#define PEI_HEADERS
24#include "sysdep.h"
25#include "bfd.h"
26#include "libbfd.h"
27#include "libiberty.h"
28#include "coff/x86_64.h"
29#include "coff/internal.h"
30#include "coff/pe.h"
31#include "libcoff.h"
32
33#define TARGET_SYM		x86_64_pe_vec
34#define TARGET_NAME		"pe-x86-64"
35#define TARGET_SYM_BIG		x86_64_pe_big_vec
36#define TARGET_NAME_BIG		"pe-bigobj-x86-64"
37#define COFF_WITH_PE
38#define COFF_WITH_pex64
39#define COFF_WITH_PE_BIGOBJ
40#define PCRELOFFSET		true
41#if defined (USE_MINGW64_LEADING_UNDERSCORES)
42#define TARGET_UNDERSCORE	'_'
43#else
44#define TARGET_UNDERSCORE	0
45#endif
46#define COFF_LONG_SECTION_NAMES
47#define COFF_SUPPORT_GNU_LINKONCE
48#define COFF_LONG_FILENAMES
49
50#define COFF_SECTION_ALIGNMENT_ENTRIES \
51{ COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
52  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
53{ COFF_SECTION_NAME_PARTIAL_MATCH (".data"), \
54  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
55{ COFF_SECTION_NAME_PARTIAL_MATCH (".rdata"), \
56  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
57{ COFF_SECTION_NAME_PARTIAL_MATCH (".text"), \
58  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
59{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
60  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
61{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
62  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
63{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
64  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
65{ COFF_SECTION_NAME_PARTIAL_MATCH (".zdebug"), \
66  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
67{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
68  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
69
70/* The function pex64_bfd_print_pdata is implemented in pei-x86_64.c
71   source, but has be extended to also handle pe objects.  */
72extern bool pex64_bfd_print_pdata (bfd *, void *);
73
74#define bfd_pe_print_pdata   pex64_bfd_print_pdata
75
76static bool
77pex64_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
78{
79  if (bfd_link_pde (info)
80      && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
81    {
82      /* NB: When linking Windows x86-64 relocatable object files to
83	 generate ELF executable, create an indirect reference to
84	 __executable_start for __ImageBase to support R_AMD64_IMAGEBASE
85	 relocation which is relative to __ImageBase.  */
86      struct bfd_link_hash_entry *h, *hi;
87      hi = bfd_link_hash_lookup (info->hash, "__ImageBase", true, false,
88				 false);
89      if (hi->type == bfd_link_hash_new
90	  || hi->type == bfd_link_hash_undefined
91	  || hi->type == bfd_link_hash_undefweak)
92	{
93	  h = bfd_link_hash_lookup (info->hash, "__executable_start",
94				    true, false, true);
95	  hi->type = bfd_link_hash_indirect;
96	  hi->u.i.link = h;
97	}
98    }
99
100  return _bfd_coff_link_add_symbols (abfd, info);
101}
102
103#define coff_bfd_link_add_symbols pex64_link_add_symbols
104
105#include "coff-x86_64.c"
106