Commit | Line | Data |
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af39267e | 1 | /* simple.c -- BFD simple client routines |
5ed6aba4 | 2 | Copyright 2002, 2003 |
af39267e DJ |
3 | Free Software Foundation, Inc. |
4 | Contributed by MontaVista Software, Inc. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
25 | #include "bfdlink.h" | |
26 | ||
b34976b6 | 27 | static bfd_boolean simple_dummy_warning |
8718ac9c HPN |
28 | PARAMS ((struct bfd_link_info *, const char *, const char *, bfd *, |
29 | asection *, bfd_vma)); | |
5d661875 | 30 | |
b34976b6 | 31 | static bfd_boolean simple_dummy_undefined_symbol |
8718ac9c | 32 | PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, |
b34976b6 | 33 | bfd_vma, bfd_boolean)); |
5d661875 | 34 | |
b34976b6 | 35 | static bfd_boolean simple_dummy_reloc_overflow |
8718ac9c HPN |
36 | PARAMS ((struct bfd_link_info *, const char *, const char *, bfd_vma, |
37 | bfd *, asection *, bfd_vma)); | |
5d661875 | 38 | |
b34976b6 | 39 | static bfd_boolean simple_dummy_reloc_dangerous |
8718ac9c | 40 | PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma)); |
5d661875 | 41 | |
b34976b6 | 42 | static bfd_boolean simple_dummy_unattached_reloc |
8718ac9c | 43 | PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma)); |
5d661875 DA |
44 | |
45 | bfd_byte * bfd_simple_get_relocated_section_contents | |
46 | PARAMS ((bfd *, asection *, bfd_byte *)); | |
47 | ||
b34976b6 | 48 | static bfd_boolean |
5d661875 | 49 | simple_dummy_warning (link_info, warning, symbol, abfd, section, address) |
8718ac9c HPN |
50 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
51 | const char *warning ATTRIBUTE_UNUSED; | |
52 | const char *symbol ATTRIBUTE_UNUSED; | |
53 | bfd *abfd ATTRIBUTE_UNUSED; | |
54 | asection *section ATTRIBUTE_UNUSED; | |
55 | bfd_vma address ATTRIBUTE_UNUSED; | |
af39267e | 56 | { |
b34976b6 | 57 | return TRUE; |
af39267e DJ |
58 | } |
59 | ||
b34976b6 | 60 | static bfd_boolean |
5d661875 | 61 | simple_dummy_undefined_symbol (link_info, name, abfd, section, address, fatal) |
8718ac9c HPN |
62 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
63 | const char *name ATTRIBUTE_UNUSED; | |
64 | bfd *abfd ATTRIBUTE_UNUSED; | |
65 | asection *section ATTRIBUTE_UNUSED; | |
66 | bfd_vma address ATTRIBUTE_UNUSED; | |
b34976b6 | 67 | bfd_boolean fatal ATTRIBUTE_UNUSED; |
af39267e | 68 | { |
b34976b6 | 69 | return TRUE; |
af39267e DJ |
70 | } |
71 | ||
b34976b6 | 72 | static bfd_boolean |
5d661875 DA |
73 | simple_dummy_reloc_overflow (link_info, name, reloc_name, addend, abfd, |
74 | section, address) | |
8718ac9c HPN |
75 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
76 | const char *name ATTRIBUTE_UNUSED; | |
77 | const char *reloc_name ATTRIBUTE_UNUSED; | |
78 | bfd_vma addend ATTRIBUTE_UNUSED; | |
79 | bfd *abfd ATTRIBUTE_UNUSED; | |
80 | asection *section ATTRIBUTE_UNUSED; | |
81 | bfd_vma address ATTRIBUTE_UNUSED; | |
af39267e | 82 | { |
b34976b6 | 83 | return TRUE; |
af39267e DJ |
84 | } |
85 | ||
b34976b6 | 86 | static bfd_boolean |
5d661875 | 87 | simple_dummy_reloc_dangerous (link_info, message, abfd, section, address) |
8718ac9c HPN |
88 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
89 | const char *message ATTRIBUTE_UNUSED; | |
90 | bfd *abfd ATTRIBUTE_UNUSED; | |
91 | asection *section ATTRIBUTE_UNUSED; | |
92 | bfd_vma address ATTRIBUTE_UNUSED; | |
af39267e | 93 | { |
b34976b6 | 94 | return TRUE; |
af39267e DJ |
95 | } |
96 | ||
b34976b6 | 97 | static bfd_boolean |
5d661875 | 98 | simple_dummy_unattached_reloc (link_info, name, abfd, section, address) |
8718ac9c HPN |
99 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; |
100 | const char *name ATTRIBUTE_UNUSED; | |
101 | bfd *abfd ATTRIBUTE_UNUSED; | |
102 | asection *section ATTRIBUTE_UNUSED; | |
103 | bfd_vma address ATTRIBUTE_UNUSED; | |
af39267e | 104 | { |
b34976b6 | 105 | return TRUE; |
af39267e DJ |
106 | } |
107 | ||
108 | /* | |
109 | FUNCTION | |
110 | bfd_simple_relocate_secton | |
111 | ||
112 | SYNOPSIS | |
113 | bfd_byte *bfd_simple_get_relocated_section_contents (bfd *abfd, asection *sec, bfd_byte *outbuf); | |
114 | ||
115 | DESCRIPTION | |
116 | Returns the relocated contents of section @var{sec}. Only symbols | |
117 | from @var{abfd} and the output offsets assigned to sections in | |
118 | @var{abfd} are used. The result will be stored at @var{outbuf} | |
119 | or allocated with @code{bfd_malloc} if @var{outbuf} is @code{NULL}. | |
120 | ||
121 | Generally all sections in @var{abfd} should have their | |
122 | @code{output_section} pointing back to the original section. | |
123 | ||
124 | Returns @code{NULL} on a fatal error; ignores errors applying | |
125 | particular relocations. | |
126 | */ | |
127 | ||
128 | bfd_byte * | |
5d661875 DA |
129 | bfd_simple_get_relocated_section_contents (abfd, sec, outbuf) |
130 | bfd *abfd; | |
131 | asection *sec; | |
132 | bfd_byte *outbuf; | |
af39267e DJ |
133 | { |
134 | struct bfd_link_info link_info; | |
135 | struct bfd_link_order link_order; | |
136 | struct bfd_link_callbacks callbacks; | |
137 | bfd_byte *contents, *data; | |
5ed6aba4 | 138 | int storage_needed; |
af39267e DJ |
139 | asymbol **symbol_table; |
140 | ||
ec4530b5 NC |
141 | if (! (sec->flags & SEC_RELOC)) |
142 | { | |
143 | bfd_size_type size = bfd_section_size (abfd, sec); | |
144 | ||
145 | if (outbuf == NULL) | |
146 | contents = bfd_malloc (size); | |
147 | else | |
148 | contents = outbuf; | |
149 | ||
150 | if (contents) | |
151 | bfd_get_section_contents (abfd, sec, contents, 0, size); | |
152 | ||
153 | return contents; | |
154 | } | |
155 | ||
af39267e DJ |
156 | /* In order to use bfd_get_relocated_section_contents, we need |
157 | to forge some data structures that it expects. */ | |
158 | ||
159 | /* Fill in the bare minimum number of fields for our purposes. */ | |
160 | memset (&link_info, 0, sizeof (link_info)); | |
161 | link_info.input_bfds = abfd; | |
162 | ||
163 | link_info.hash = bfd_link_hash_table_create (abfd); | |
164 | link_info.callbacks = &callbacks; | |
165 | callbacks.warning = simple_dummy_warning; | |
166 | callbacks.undefined_symbol = simple_dummy_undefined_symbol; | |
167 | callbacks.reloc_overflow = simple_dummy_reloc_overflow; | |
168 | callbacks.reloc_dangerous = simple_dummy_reloc_dangerous; | |
169 | callbacks.unattached_reloc = simple_dummy_unattached_reloc; | |
170 | ||
171 | memset (&link_order, 0, sizeof (link_order)); | |
172 | link_order.next = NULL; | |
173 | link_order.type = bfd_indirect_link_order; | |
174 | link_order.offset = 0; | |
175 | link_order.size = bfd_section_size (abfd, sec); | |
176 | link_order.u.indirect.section = sec; | |
177 | ||
178 | data = NULL; | |
179 | if (outbuf == NULL) | |
180 | { | |
181 | data = bfd_malloc (bfd_section_size (abfd, sec)); | |
182 | if (data == NULL) | |
183 | return NULL; | |
184 | outbuf = data; | |
185 | } | |
186 | bfd_link_add_symbols (abfd, &link_info); | |
187 | ||
188 | storage_needed = bfd_get_symtab_upper_bound (abfd); | |
189 | symbol_table = (asymbol **) bfd_malloc (storage_needed); | |
5ed6aba4 | 190 | bfd_canonicalize_symtab (abfd, symbol_table); |
af39267e DJ |
191 | |
192 | contents = bfd_get_relocated_section_contents (abfd, | |
193 | &link_info, | |
194 | &link_order, | |
195 | outbuf, | |
196 | 0, | |
197 | symbol_table); | |
198 | if (contents == NULL && data != NULL) | |
199 | free (data); | |
200 | ||
201 | /* Foul hack to prevent bfd_section_size aborts. This flag only controls | |
202 | that macro (and the related size macros), selecting between _raw_size | |
203 | and _cooked_size. Debug sections won't change size while we're only | |
204 | relocating. There may be trouble here someday if it tries to run | |
205 | relaxation unexpectedly, so make sure. */ | |
206 | BFD_ASSERT (sec->_raw_size == sec->_cooked_size); | |
207 | sec->reloc_done = 0; | |
208 | ||
209 | bfd_link_hash_table_free (abfd, link_info.hash); | |
210 | ||
5ed6aba4 | 211 | free (symbol_table); |
af39267e DJ |
212 | return contents; |
213 | } |