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
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD 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, or (at your option)
13 GLD 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 GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
35 #if defined(__GNUC__) && !defined(C_ALLOCA)
37 # define alloca __builtin_alloca
39 # if defined(HAVE_ALLOCA_H) && !defined(C_ALLOCA)
42 # ifndef alloca /* predefined by HP cc +Olibcalls */
43 # if !defined (__STDC__) && !defined (__hpux)
47 # endif /* __STDC__, __hpux */
49 # endif /* HAVE_ALLOCA_H */
55 /* The Solaris version of locale.h always includes libintl.h. If we have
56 been configured with --disable-nls then ENABLE_NLS will not be defined
57 and the dummy definitions of bindtextdomain (et al) below will conflict
58 with the defintions in libintl.h. So we define these values to prevent
59 the bogus inclusion of libintl.h. */
61 # define _LIBGETTEXT_H
68 # define _(String) gettext (String)
70 # define N_(String) gettext_noop (String)
72 # define N_(String) (String)
75 # define gettext(Msgid) (Msgid)
76 # define dgettext(Domainname, Msgid) (Msgid)
77 # define dcgettext(Domainname, Msgid, Category) (Msgid)
78 # define textdomain(Domainname) while (0) /* nothing */
79 # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
80 # define _(String) (String)
81 # define N_(String) (String)
86 /* Look in this environment name for the linker to pretend to be */
87 #define EMULATION_ENVIRON "LDEMULATION"
88 /* If in there look for the strings: */
90 /* Look in this variable for a target format */
91 #define TARGET_ENVIRON "GNUTARGET"
93 /* Input sections which are put in a section of this name are actually
95 #define DISCARD_SECTION_NAME "/DISCARD/"
97 /* A file name list */
98 typedef struct name_list {
100 struct name_list *next;
104 /* A wildcard specification. */
107 none, by_name, by_alignment, by_name_alignment, by_alignment_name
110 extern sort_type sort_section;
112 struct wildcard_spec {
114 struct name_list *exclude_name_list;
118 struct wildcard_list {
119 struct wildcard_list *next;
120 struct wildcard_spec spec;
123 struct map_symbol_def {
124 struct bfd_link_hash_entry *entry;
125 struct map_symbol_def *next;
128 /* The initial part of fat_user_section_struct has to be idential with
129 lean_user_section_struct. */
130 typedef struct fat_user_section_struct {
131 /* For input sections, when writing a map file: head / tail of a linked
132 list of hash table entries for symbols defined in this section. */
133 struct map_symbol_def *map_symbol_def_head;
134 struct map_symbol_def **map_symbol_def_tail;
135 } fat_section_userdata_type;
137 #define get_userdata(x) ((x)->userdata)
139 #define BYTE_SIZE (1)
140 #define SHORT_SIZE (2)
141 #define LONG_SIZE (4)
142 #define QUAD_SIZE (8)
145 /* 1 => assign space to common symbols even if `relocatable_output'. */
146 bfd_boolean force_common_definition;
148 /* 1 => do not assign addresses to common symbols. */
149 bfd_boolean inhibit_common_definition;
152 /* Name of runtime interpreter to invoke. */
155 /* Name to give runtime libary from the -soname argument. */
158 /* Runtime library search path from the -rpath argument. */
161 /* Link time runtime library search path from the -rpath-link
165 /* Big or little endian as set on command line. */
166 enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE } endian;
168 /* If TRUE, build MIPS embedded PIC relocation tables in the output
170 bfd_boolean embedded_relocs;
172 /* If TRUE, force generation of a file with a .exe file. */
173 bfd_boolean force_exe_suffix;
175 /* If TRUE, generate a cross reference report. */
178 /* If TRUE (which is the default), warn about mismatched input
180 bfd_boolean warn_mismatch;
182 /* Name of shared object whose symbol table should be filtered with
183 this shared object. From the --filter option. */
186 /* Name of shared object for whose symbol table this shared object
187 is an auxiliary filter. From the --auxiliary option. */
188 char **auxiliary_filters;
190 /* A version symbol to be applied to the symbol names found in the
191 .exports sections. */
192 char *version_exports_section;
194 /* Default linker script. */
195 char *default_script;
197 /* If TRUE (the default) check section addresses, once compute,
199 bfd_boolean check_section_addresses;
201 /* If TRUE allow the linking of input files in an unknown architecture
202 assuming that the user knows what they are doing. This was the old
203 behaviour of the linker. The new default behaviour is to reject such
205 bfd_boolean accept_unknown_input_arch;
207 /* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
215 /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
216 and --dynamic-list FILE, as set on command line. */
219 dynamic_list_unset = 0,
225 extern args_type command_line;
227 typedef int token_code_type;
230 bfd_size_type specified_data_size;
231 bfd_boolean magic_demand_paged;
232 bfd_boolean make_executable;
234 /* If TRUE, doing a dynamic link. */
235 bfd_boolean dynamic_link;
237 /* If TRUE, -shared is supported. */
238 /* ??? A better way to do this is perhaps to define this in the
239 ld_emulation_xfer_struct since this is really a target dependent
241 bfd_boolean has_shared;
243 /* If TRUE, build constructors. */
244 bfd_boolean build_constructors;
246 /* If TRUE, warn about any constructors. */
247 bfd_boolean warn_constructors;
249 /* If TRUE, warn about merging common symbols with others. */
250 bfd_boolean warn_common;
252 /* If TRUE, only warn once about a particular undefined symbol. */
253 bfd_boolean warn_once;
255 /* If TRUE, warn if multiple global-pointers are needed (Alpha
257 bfd_boolean warn_multiple_gp;
259 /* If TRUE, warn if the starting address of an output section
260 changes due to the alignment of an input section. */
261 bfd_boolean warn_section_align;
263 /* If TRUE, warning messages are fatal */
264 bfd_boolean fatal_warnings;
266 bfd_boolean sort_common;
268 bfd_boolean text_read_only;
275 /* If set, orphan input sections will be mapped to separate output
277 bfd_boolean unique_orphan_sections;
279 unsigned int split_by_reloc;
280 bfd_size_type split_by_file;
282 /* If set, only search library directories explicitly selected
283 on the command line. */
284 bfd_boolean only_cmd_line_lib_dirs;
286 /* The size of the hash table to use. */
287 bfd_size_type hash_table_size;
289 /* The maximum page size for ELF. */
292 /* The common page size for ELF. */
293 bfd_vma commonpagesize;
296 extern ld_config_type config;
298 extern FILE * saved_script_handle;
299 extern bfd_boolean force_make_executable;
301 /* Non-zero if we are processing a --defsym from the command line. */
302 extern int parsing_defsym;
304 extern int yyparse (void);
305 extern void add_cref (const char *, bfd *, asection *, bfd_vma);
306 extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
307 extern void output_cref (FILE *);
308 extern void check_nocrossrefs (void);
309 extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
311 /* If gcc >= 2.6, we can give a function name, too. */
312 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
313 #define __PRETTY_FUNCTION__ NULL
317 #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)