1 /* ld.h -- general linker header file
2 Copyright (C) 1991-2017 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 textdomain(Domainname) while (0) /* nothing */
59 # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
60 # define _(String) (String)
61 # define N_(String) (String)
64 /* Look in this environment name for the linker to pretend to be */
65 #define EMULATION_ENVIRON "LDEMULATION"
66 /* If in there look for the strings: */
68 /* Look in this variable for a target format */
69 #define TARGET_ENVIRON "GNUTARGET"
71 /* Input sections which are put in a section of this name are actually
73 #define DISCARD_SECTION_NAME "/DISCARD/"
75 /* A file name list. */
76 typedef struct name_list
79 struct name_list *next;
83 typedef enum {sort_none, sort_ascending, sort_descending} sort_order;
85 /* A wildcard specification. */
89 none, by_name, by_alignment, by_name_alignment, by_alignment_name,
90 by_none, by_init_priority
93 extern sort_type sort_section;
98 struct name_list *exclude_name_list;
100 struct flag_info *section_flag_list;
105 struct wildcard_list *next;
106 struct wildcard_spec spec;
109 #define BYTE_SIZE (1)
110 #define SHORT_SIZE (2)
111 #define LONG_SIZE (4)
112 #define QUAD_SIZE (8)
114 enum endian_enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE };
123 enum dynamic_list_enum
125 dynamic_list_unset = 0,
132 /* 1 => assign space to common symbols even if `relocatable_output'. */
133 bfd_boolean force_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 /* Name of the import library to generate. */
164 char *out_implib_filename;
166 /* If TRUE we'll just print the default output on stdout. */
167 bfd_boolean print_output_format;
169 /* If set, display the target memory usage (per memory region). */
170 bfd_boolean print_memory_usage;
172 /* Should we force section groups to be resolved? Controlled with
173 --force-group-allocation on the command line or FORCE_GROUP_ALLOCATION
174 in the linker script. */
175 bfd_boolean force_group_allocation;
177 /* Big or little endian as set on command line. */
178 enum endian_enum endian;
180 /* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
181 enum symbolic_enum symbolic;
183 /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
184 and --dynamic-list FILE, as set on command line. */
185 enum dynamic_list_enum dynamic_list;
187 /* Name of runtime interpreter to invoke. */
190 /* Name to give runtime library from the -soname argument. */
193 /* Runtime library search path from the -rpath argument. */
196 /* Link time runtime library search path from the -rpath-link
200 /* Name of shared object whose symbol table should be filtered with
201 this shared object. From the --filter option. */
204 /* Name of shared object for whose symbol table this shared object
205 is an auxiliary filter. From the --auxiliary option. */
206 char **auxiliary_filters;
208 /* A version symbol to be applied to the symbol names found in the
209 .exports sections. */
210 char *version_exports_section;
212 /* Default linker script. */
213 char *default_script;
216 extern args_type command_line;
218 typedef int token_code_type;
220 /* Different ways we can handle orphan sections. */
222 enum orphan_handling_enum
224 /* The classic strategy, find a suitable section to place the orphan
226 orphan_handling_place = 0,
228 /* Discard any orphan sections as though they were assign to the section
230 orphan_handling_discard,
232 /* Find somewhere to place the orphan section, as with
233 ORPHAN_HANDLING_PLACE, but also issue a warning. */
234 orphan_handling_warn,
236 /* Issue a fatal error if any orphan sections are found. */
237 orphan_handling_error,
242 bfd_boolean magic_demand_paged;
243 bfd_boolean make_executable;
245 /* If TRUE, -shared is supported. */
246 /* ??? A better way to do this is perhaps to define this in the
247 ld_emulation_xfer_struct since this is really a target dependent
249 bfd_boolean has_shared;
251 /* If TRUE, build constructors. */
252 bfd_boolean build_constructors;
254 /* If TRUE, warn about any constructors. */
255 bfd_boolean warn_constructors;
257 /* If TRUE, warn about merging common symbols with others. */
258 bfd_boolean warn_common;
260 /* If TRUE, only warn once about a particular undefined symbol. */
261 bfd_boolean warn_once;
263 /* How should we deal with orphan sections. */
264 enum orphan_handling_enum orphan_handling;
266 /* If TRUE, warn if multiple global-pointers are needed (Alpha
268 bfd_boolean warn_multiple_gp;
270 /* If TRUE, warn if the starting address of an output section
271 changes due to the alignment of an input section. */
272 bfd_boolean warn_section_align;
274 /* If TRUE, warning messages are fatal */
275 bfd_boolean fatal_warnings;
277 sort_order sort_common;
279 bfd_boolean text_read_only;
283 /* If set, orphan input sections will be mapped to separate output
285 bfd_boolean unique_orphan_sections;
287 /* If set, only search library directories explicitly selected
288 on the command line. */
289 bfd_boolean only_cmd_line_lib_dirs;
291 /* If set, numbers and absolute symbols are simply treated as
292 numbers everywhere. */
293 bfd_boolean sane_expr;
295 /* If set, code and non-code sections should never be in one segment. */
296 bfd_boolean separate_code;
298 /* The rpath separation character. Usually ':'. */
299 char rpath_separator;
304 unsigned int split_by_reloc;
305 bfd_size_type split_by_file;
307 /* The size of the hash table to use. */
308 unsigned long hash_table_size;
310 /* The maximum page size for ELF. */
313 /* The common page size for ELF. */
314 bfd_vma commonpagesize;
317 extern ld_config_type config;
319 extern FILE * saved_script_handle;
320 extern bfd_boolean force_make_executable;
322 extern int yyparse (void);
323 extern void add_cref (const char *, bfd *, asection *, bfd_vma);
324 extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
325 extern void output_cref (FILE *);
326 extern void check_nocrossrefs (void);
327 extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
329 /* If gcc >= 2.6, we can give a function name, too. */
330 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
331 #define __PRETTY_FUNCTION__ NULL
335 #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)