1 /* ld.h -- general linker header file
2 Copyright (C) 1991-2019 Free Software Foundation, Inc.
4 This file is part of the GNU Binutils.
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.
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.
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. */
35 /* The Solaris version of locale.h always includes libintl.h. If we have
36 been configured with --disable-nls then ENABLE_NLS will not be defined
37 and the dummy definitions of bindtextdomain (et al) below will conflict
38 with the defintions in libintl.h. So we define these values to prevent
39 the bogus inclusion of libintl.h. */
41 # define _LIBGETTEXT_H
48 # define _(String) gettext (String)
50 # define N_(String) gettext_noop (String)
52 # define N_(String) (String)
55 # define gettext(Msgid) (Msgid)
56 # define dgettext(Domainname, Msgid) (Msgid)
57 # define dcgettext(Domainname, Msgid, Category) (Msgid)
58 # define ngettext(Msgid1, Msgid2, n) \
59 (n == 1 ? Msgid1 : Msgid2)
60 # define dngettext(Domainname, Msgid1, Msgid2, n) \
61 (n == 1 ? Msgid1 : Msgid2)
62 # define dcngettext(Domainname, Msgid1, Msgid2, n, Category) \
63 (n == 1 ? Msgid1 : Msgid2)
64 # define textdomain(Domainname) do {} while (0)
65 # define bindtextdomain(Domainname, Dirname) do {} while (0)
66 # define _(String) (String)
67 # define N_(String) (String)
70 /* Look in this environment name for the linker to pretend to be */
71 #define EMULATION_ENVIRON "LDEMULATION"
72 /* If in there look for the strings: */
74 /* Look in this variable for a target format */
75 #define TARGET_ENVIRON "GNUTARGET"
77 /* Input sections which are put in a section of this name are actually
79 #define DISCARD_SECTION_NAME "/DISCARD/"
81 /* A file name list. */
82 typedef struct name_list
85 struct name_list *next;
89 typedef enum {sort_none, sort_ascending, sort_descending} sort_order;
91 /* A wildcard specification. */
95 none, by_name, by_alignment, by_name_alignment, by_alignment_name,
96 by_none, by_init_priority
99 extern sort_type sort_section;
104 struct name_list *exclude_name_list;
106 struct flag_info *section_flag_list;
111 struct wildcard_list *next;
112 struct wildcard_spec spec;
115 #define BYTE_SIZE (1)
116 #define SHORT_SIZE (2)
117 #define LONG_SIZE (4)
118 #define QUAD_SIZE (8)
120 enum endian_enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE };
129 enum dynamic_list_enum
131 dynamic_list_unset = 0,
138 /* 1 => assign space to common symbols even if `relocatable_output'. */
139 bfd_boolean force_common_definition;
141 /* If TRUE, build MIPS embedded PIC relocation tables in the output
143 bfd_boolean embedded_relocs;
145 /* If TRUE, force generation of a file with a .exe file. */
146 bfd_boolean force_exe_suffix;
148 /* If TRUE, generate a cross reference report. */
151 /* If TRUE (which is the default), warn about mismatched input
153 bfd_boolean warn_mismatch;
155 /* Warn on attempting to open an incompatible library during a library
157 bfd_boolean warn_search_mismatch;
159 /* If non-zero check section addresses, once computed,
160 for overlaps. Relocatable links only check when this is > 0. */
161 signed char check_section_addresses;
163 /* If TRUE allow the linking of input files in an unknown architecture
164 assuming that the user knows what they are doing. This was the old
165 behaviour of the linker. The new default behaviour is to reject such
167 bfd_boolean accept_unknown_input_arch;
169 /* Name of the import library to generate. */
170 char *out_implib_filename;
172 /* If TRUE we'll just print the default output on stdout. */
173 bfd_boolean print_output_format;
175 /* If set, display the target memory usage (per memory region). */
176 bfd_boolean print_memory_usage;
178 /* Should we force section groups to be resolved? Controlled with
179 --force-group-allocation on the command line or FORCE_GROUP_ALLOCATION
180 in the linker script. */
181 bfd_boolean force_group_allocation;
183 /* Big or little endian as set on command line. */
184 enum endian_enum endian;
186 /* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
187 enum symbolic_enum symbolic;
189 /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
190 and --dynamic-list FILE, as set on command line. */
191 enum dynamic_list_enum dynamic_list;
193 /* Name of runtime interpreter to invoke. */
196 /* Name to give runtime library from the -soname argument. */
199 /* Runtime library search path from the -rpath argument. */
202 /* Link time runtime library search path from the -rpath-link
206 /* Name of shared object whose symbol table should be filtered with
207 this shared object. From the --filter option. */
210 /* Name of shared object for whose symbol table this shared object
211 is an auxiliary filter. From the --auxiliary option. */
212 char **auxiliary_filters;
214 /* A version symbol to be applied to the symbol names found in the
215 .exports sections. */
216 char *version_exports_section;
218 /* Default linker script. */
219 char *default_script;
222 extern args_type command_line;
224 typedef int token_code_type;
226 /* Different ways we can handle orphan sections. */
228 enum orphan_handling_enum
230 /* The classic strategy, find a suitable section to place the orphan
232 orphan_handling_place = 0,
234 /* Discard any orphan sections as though they were assign to the section
236 orphan_handling_discard,
238 /* Find somewhere to place the orphan section, as with
239 ORPHAN_HANDLING_PLACE, but also issue a warning. */
240 orphan_handling_warn,
242 /* Issue a fatal error if any orphan sections are found. */
243 orphan_handling_error,
248 bfd_boolean magic_demand_paged;
249 bfd_boolean make_executable;
251 /* If TRUE, -shared is supported. */
252 /* ??? A better way to do this is perhaps to define this in the
253 ld_emulation_xfer_struct since this is really a target dependent
255 bfd_boolean has_shared;
257 /* If TRUE, build constructors. */
258 bfd_boolean build_constructors;
260 /* If TRUE, warn about any constructors. */
261 bfd_boolean warn_constructors;
263 /* If TRUE, warn about merging common symbols with others. */
264 bfd_boolean warn_common;
266 /* If TRUE, only warn once about a particular undefined symbol. */
267 bfd_boolean warn_once;
269 /* How should we deal with orphan sections. */
270 enum orphan_handling_enum orphan_handling;
272 /* If TRUE, warn if multiple global-pointers are needed (Alpha
274 bfd_boolean warn_multiple_gp;
276 /* If TRUE, warn if the starting address of an output section
277 changes due to the alignment of an input section. */
278 bfd_boolean warn_section_align;
280 /* If TRUE, warning messages are fatal */
281 bfd_boolean fatal_warnings;
283 sort_order sort_common;
285 bfd_boolean text_read_only;
289 /* If set, orphan input sections will be mapped to separate output
291 bfd_boolean unique_orphan_sections;
293 /* If set, only search library directories explicitly selected
294 on the command line. */
295 bfd_boolean only_cmd_line_lib_dirs;
297 /* If set, numbers and absolute symbols are simply treated as
298 numbers everywhere. */
299 bfd_boolean sane_expr;
301 /* If set, code and non-code sections should never be in one segment. */
302 bfd_boolean separate_code;
304 /* The rpath separation character. Usually ':'. */
305 char rpath_separator;
310 unsigned int split_by_reloc;
311 bfd_size_type split_by_file;
313 /* The size of the hash table to use. */
314 unsigned long hash_table_size;
316 /* The maximum page size for ELF. */
319 /* The common page size for ELF. */
320 bfd_vma commonpagesize;
322 /* If set, print discarded sections in map file output. */
323 bfd_boolean print_map_discarded;
326 extern ld_config_type config;
328 extern FILE * saved_script_handle;
329 extern bfd_boolean force_make_executable;
331 extern int yyparse (void);
332 extern void add_cref (const char *, bfd *, asection *, bfd_vma);
333 extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
334 extern void output_cref (FILE *);
335 extern void check_nocrossrefs (void);
336 extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
338 /* If gcc >= 2.6, we can give a function name, too. */
339 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
340 #define __PRETTY_FUNCTION__ NULL
344 #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)