1 /* BFD back-end for AArch64 COFF files.
2 Copyright (C) 2021-2022 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
22 #ifndef COFF_WITH_peAArch64
23 #define COFF_WITH_peAArch64
24 #endif
25
26 /* Note we have to make sure not to include headers twice.
27 Not all headers are wrapped in #ifdef guards, so we define
28 PEI_HEADERS to prevent double including here. */
29 #ifndef PEI_HEADERS
30 #include "sysdep.h"
31 #include "bfd.h"
32 #include "libbfd.h"
33 #include "coff/aarch64.h"
34 #include "coff/internal.h"
35 #include "coff/pe.h"
36 #include "libcoff.h"
37 #include "libiberty.h"
38 #endif
39
40 #include "libcoff.h"
41
42 /* The page size is a guess based on ELF. */
43
44 #define COFF_PAGE_SIZE 0x1000
45
46 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
47 #define OCTETS_PER_BYTE(ABFD, SEC) 1
48
49 #ifndef PCRELOFFSET
50 #define PCRELOFFSET true
51 #endif
52
53 /* Currently we don't handle any relocations. */
54 static reloc_howto_type pe_aarch64_std_reloc_howto[] =
55 {
56
57 };
58
59 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2
60 #define COFF_PAGE_SIZE 0x1000
61
62 #ifndef NUM_ELEM
63 #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
64 #endif
65
66 #define NUM_RELOCS NUM_ELEM (pe_aarch64_std_reloc_howto)
67
68 #define RTYPE2HOWTO(cache_ptr, dst) \
69 (cache_ptr)->howto = NULL
70
71 #ifndef bfd_pe_print_pdata
72 #define bfd_pe_print_pdata NULL
73 #endif
74
75 /* Return TRUE if this relocation should
76 appear in the output .reloc section. */
77
78 static bool
in_reloc_p(bfd * abfd ATTRIBUTE_UNUSED,reloc_howto_type * howto)79 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
80 reloc_howto_type * howto)
81 {
82 return !howto->pc_relative;
83 }
84
85 #include "coffcode.h"
86
87 /* Target vectors. */
88 const bfd_target
89 #ifdef TARGET_SYM
90 TARGET_SYM =
91 #else
92 aarch64_pei_vec =
93 #endif
94 {
95 #ifdef TARGET_NAME
96 TARGET_NAME,
97 #else
98 "pei-aarch64-little", /* Name. */
99 #endif
100 bfd_target_coff_flavour,
101 BFD_ENDIAN_LITTLE, /* Data byte order is little. */
102 BFD_ENDIAN_LITTLE, /* Header byte order is little. */
103
104 (HAS_RELOC | EXEC_P /* Object flags. */
105 | HAS_LINENO | HAS_DEBUG
106 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
107
108 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */
109 #if defined(COFF_WITH_PE)
110 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
111 #endif
112 | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
113
114 #ifdef TARGET_UNDERSCORE
115 TARGET_UNDERSCORE, /* Leading underscore. */
116 #else
117 0, /* Leading underscore. */
118 #endif
119 '/', /* Ar_pad_char. */
120 15, /* Ar_max_namelen. */
121 0, /* match priority. */
122 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
123
124 /* Data conversion functions. */
125 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
126 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
127 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
128 /* Header conversion functions. */
129 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
130 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
131 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs. */
132
133 /* Note that we allow an object file to be treated as a core file as well. */
134 { /* bfd_check_format. */
135 _bfd_dummy_target,
136 coff_object_p,
137 bfd_generic_archive_p,
138 coff_object_p
139 },
140 { /* bfd_set_format. */
141 _bfd_bool_bfd_false_error,
142 coff_mkobject,
143 _bfd_generic_mkarchive,
144 _bfd_bool_bfd_false_error
145 },
146 { /* bfd_write_contents. */
147 _bfd_bool_bfd_false_error,
148 coff_write_object_contents,
149 _bfd_write_archive_contents,
150 _bfd_bool_bfd_false_error
151 },
152
153 BFD_JUMP_TABLE_GENERIC (coff),
154 BFD_JUMP_TABLE_COPY (coff),
155 BFD_JUMP_TABLE_CORE (_bfd_nocore),
156 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
157 BFD_JUMP_TABLE_SYMBOLS (coff),
158 BFD_JUMP_TABLE_RELOCS (coff),
159 BFD_JUMP_TABLE_WRITE (coff),
160 BFD_JUMP_TABLE_LINK (coff),
161 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
162
163 NULL,
164
165 COFF_SWAP_TABLE
166 };
167