1 /* ld.h -- general linker header file
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of the GNU Binutils.
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 3 of the License, or
11 (at your option) any later version.
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.
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., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
37 /* The Solaris version of locale.h always includes libintl.h. If we have
38 been configured with --disable-nls then ENABLE_NLS will not be defined
39 and the dummy definitions of bindtextdomain (et al) below will conflict
40 with the defintions in libintl.h. So we define these values to prevent
41 the bogus inclusion of libintl.h. */
43 # define _LIBGETTEXT_H
50 # define _(String) gettext (String)
52 # define N_(String) gettext_noop (String)
54 # define N_(String) (String)
57 # define gettext(Msgid) (Msgid)
58 # define dgettext(Domainname, Msgid) (Msgid)
59 # define dcgettext(Domainname, Msgid, Category) (Msgid)
60 # define textdomain(Domainname) while (0) /* nothing */
61 # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
62 # define _(String) (String)
63 # define N_(String) (String)
66 /* Look in this environment name for the linker to pretend to be */
67 #define EMULATION_ENVIRON "LDEMULATION"
68 /* If in there look for the strings: */
70 /* Look in this variable for a target format */
71 #define TARGET_ENVIRON "GNUTARGET"
73 /* Input sections which are put in a section of this name are actually
75 #define DISCARD_SECTION_NAME "/DISCARD/"
77 /* A file name list */
78 typedef struct name_list
{
80 struct name_list
*next
;
84 typedef enum {sort_none
, sort_ascending
, sort_descending
} sort_order
;
86 /* A wildcard specification. */
89 none
, by_name
, by_alignment
, by_name_alignment
, by_alignment_name
92 extern sort_type sort_section
;
94 struct wildcard_spec
{
96 struct name_list
*exclude_name_list
;
100 struct wildcard_list
{
101 struct wildcard_list
*next
;
102 struct wildcard_spec spec
;
105 struct map_symbol_def
{
106 struct bfd_link_hash_entry
*entry
;
107 struct map_symbol_def
*next
;
110 /* The initial part of fat_user_section_struct has to be idential with
111 lean_user_section_struct. */
112 typedef struct fat_user_section_struct
{
113 /* For input sections, when writing a map file: head / tail of a linked
114 list of hash table entries for symbols defined in this section. */
115 struct map_symbol_def
*map_symbol_def_head
;
116 struct map_symbol_def
**map_symbol_def_tail
;
117 unsigned long map_symbol_def_count
;
118 } fat_section_userdata_type
;
120 #define get_userdata(x) ((x)->userdata)
122 #define BYTE_SIZE (1)
123 #define SHORT_SIZE (2)
124 #define LONG_SIZE (4)
125 #define QUAD_SIZE (8)
128 /* 1 => assign space to common symbols even if `relocatable_output'. */
129 bfd_boolean force_common_definition
;
131 /* 1 => do not assign addresses to common symbols. */
132 bfd_boolean inhibit_common_definition
;
135 /* If TRUE, build MIPS embedded PIC relocation tables in the output
137 bfd_boolean embedded_relocs
;
139 /* If TRUE, force generation of a file with a .exe file. */
140 bfd_boolean force_exe_suffix
;
142 /* If TRUE, generate a cross reference report. */
145 /* If TRUE (which is the default), warn about mismatched input
147 bfd_boolean warn_mismatch
;
149 /* Warn on attempting to open an incompatible library during a library
151 bfd_boolean warn_search_mismatch
;
153 /* If non-zero check section addresses, once computed,
154 for overlaps. Relocatable links only check when this is > 0. */
155 signed char check_section_addresses
;
157 /* If TRUE allow the linking of input files in an unknown architecture
158 assuming that the user knows what they are doing. This was the old
159 behaviour of the linker. The new default behaviour is to reject such
161 bfd_boolean accept_unknown_input_arch
;
163 /* Big or little endian as set on command line. */
164 enum { ENDIAN_UNSET
= 0, ENDIAN_BIG
, ENDIAN_LITTLE
} endian
;
166 /* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
174 /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
175 and --dynamic-list FILE, as set on command line. */
178 dynamic_list_unset
= 0,
183 /* Name of runtime interpreter to invoke. */
186 /* Name to give runtime libary from the -soname argument. */
189 /* Runtime library search path from the -rpath argument. */
192 /* Link time runtime library search path from the -rpath-link
196 /* Name of shared object whose symbol table should be filtered with
197 this shared object. From the --filter option. */
200 /* Name of shared object for whose symbol table this shared object
201 is an auxiliary filter. From the --auxiliary option. */
202 char **auxiliary_filters
;
204 /* A version symbol to be applied to the symbol names found in the
205 .exports sections. */
206 char *version_exports_section
;
208 /* Default linker script. */
209 char *default_script
;
212 extern args_type command_line
;
214 typedef int token_code_type
;
217 bfd_boolean magic_demand_paged
;
218 bfd_boolean make_executable
;
220 /* If TRUE, doing a dynamic link. */
221 bfd_boolean dynamic_link
;
223 /* If TRUE, -shared is supported. */
224 /* ??? A better way to do this is perhaps to define this in the
225 ld_emulation_xfer_struct since this is really a target dependent
227 bfd_boolean has_shared
;
229 /* If TRUE, build constructors. */
230 bfd_boolean build_constructors
;
232 /* If TRUE, warn about any constructors. */
233 bfd_boolean warn_constructors
;
235 /* If TRUE, warn about merging common symbols with others. */
236 bfd_boolean warn_common
;
238 /* If TRUE, only warn once about a particular undefined symbol. */
239 bfd_boolean warn_once
;
241 /* If TRUE, warn if multiple global-pointers are needed (Alpha
243 bfd_boolean warn_multiple_gp
;
245 /* If TRUE, warn if the starting address of an output section
246 changes due to the alignment of an input section. */
247 bfd_boolean warn_section_align
;
249 /* If TRUE, warning messages are fatal */
250 bfd_boolean fatal_warnings
;
252 sort_order sort_common
;
254 bfd_boolean text_read_only
;
258 /* If set, orphan input sections will be mapped to separate output
260 bfd_boolean unique_orphan_sections
;
262 /* If set, only search library directories explicitly selected
263 on the command line. */
264 bfd_boolean only_cmd_line_lib_dirs
;
266 /* The rpath separation character. Usually ':'. */
267 char rpath_separator
;
272 unsigned int split_by_reloc
;
273 bfd_size_type split_by_file
;
275 bfd_size_type specified_data_size
;
277 /* The size of the hash table to use. */
278 bfd_size_type hash_table_size
;
280 /* The maximum page size for ELF. */
283 /* The common page size for ELF. */
284 bfd_vma commonpagesize
;
287 extern ld_config_type config
;
289 extern FILE * saved_script_handle
;
290 extern bfd_boolean force_make_executable
;
292 /* Non-zero if we are processing a --defsym from the command line. */
293 extern int parsing_defsym
;
295 extern int yyparse (void);
296 extern void add_cref (const char *, bfd
*, asection
*, bfd_vma
);
297 extern bfd_boolean
handle_asneeded_cref (bfd
*, enum notice_asneeded_action
);
298 extern void output_cref (FILE *);
299 extern void check_nocrossrefs (void);
300 extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN
;
302 /* If gcc >= 2.6, we can give a function name, too. */
303 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
304 #define __PRETTY_FUNCTION__ NULL
308 #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)