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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [ld/] [ld.h] - Blame information for rev 268

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1 145 khays
/* ld.h -- general linker header file
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   Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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   Free Software Foundation, Inc.
5
 
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   This file is part of the GNU Binutils.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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#ifndef LD_H
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#define LD_H
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#ifdef HAVE_LOCALE_H
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#endif
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#ifndef SEEK_CUR
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#define SEEK_CUR 1
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#endif
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#ifndef SEEK_END
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#define SEEK_END 2
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#endif
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#ifdef HAVE_LOCALE_H
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# ifndef ENABLE_NLS
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   /* The Solaris version of locale.h always includes libintl.h.  If we have
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      been configured with --disable-nls then ENABLE_NLS will not be defined
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      and the dummy definitions of bindtextdomain (et al) below will conflict
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      with the defintions in libintl.h.  So we define these values to prevent
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      the bogus inclusion of libintl.h.  */
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#  define _LIBINTL_H
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#  define _LIBGETTEXT_H
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# endif
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# include <locale.h>
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#endif
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#ifdef ENABLE_NLS
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# include <libintl.h>
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# define _(String) gettext (String)
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# ifdef gettext_noop
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#  define N_(String) gettext_noop (String)
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# else
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#  define N_(String) (String)
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# endif
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#else
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# define gettext(Msgid) (Msgid)
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# define dgettext(Domainname, Msgid) (Msgid)
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# define dcgettext(Domainname, Msgid, Category) (Msgid)
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# define textdomain(Domainname) while (0) /* nothing */
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# define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
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# define _(String) (String)
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# define N_(String) (String)
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#endif
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/* Look in this environment name for the linker to pretend to be */
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#define EMULATION_ENVIRON "LDEMULATION"
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/* If in there look for the strings: */
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/* Look in this variable for a target format */
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#define TARGET_ENVIRON "GNUTARGET"
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/* Input sections which are put in a section of this name are actually
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   discarded.  */
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#define DISCARD_SECTION_NAME "/DISCARD/"
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/* A file name list */
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typedef struct name_list {
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  const char *name;
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  struct name_list *next;
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}
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name_list;
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typedef enum {sort_none, sort_ascending, sort_descending} sort_order;
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/* A wildcard specification.  */
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typedef enum {
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  none, by_name, by_alignment, by_name_alignment, by_alignment_name,
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  by_init_priority
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} sort_type;
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extern sort_type sort_section;
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struct wildcard_spec {
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  const char *name;
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  struct name_list *exclude_name_list;
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  sort_type sorted;
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  struct flag_info *section_flag_list;
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};
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struct wildcard_list {
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  struct wildcard_list *next;
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  struct wildcard_spec spec;
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};
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struct map_symbol_def {
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  struct bfd_link_hash_entry *entry;
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  struct map_symbol_def *next;
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};
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/* The initial part of fat_user_section_struct has to be idential with
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   lean_user_section_struct.  */
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typedef struct fat_user_section_struct {
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  /* For input sections, when writing a map file: head / tail of a linked
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     list of hash table entries for symbols defined in this section.  */
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  struct map_symbol_def *map_symbol_def_head;
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  struct map_symbol_def **map_symbol_def_tail;
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  unsigned long map_symbol_def_count;
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} fat_section_userdata_type;
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#define get_userdata(x) ((x)->userdata)
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#define BYTE_SIZE       (1)
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#define SHORT_SIZE      (2)
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#define LONG_SIZE       (4)
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#define QUAD_SIZE       (8)
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enum endian_enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE };
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enum symbolic_enum
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  {
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    symbolic_unset = 0,
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    symbolic,
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    symbolic_functions,
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  };
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138
enum dynamic_list_enum
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  {
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    dynamic_list_unset = 0,
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    dynamic_list_data,
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    dynamic_list
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  };
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typedef struct {
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  /* 1 => assign space to common symbols even if `relocatable_output'.  */
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  bfd_boolean force_common_definition;
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149
  /* 1 => do not assign addresses to common symbols.  */
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  bfd_boolean inhibit_common_definition;
151
 
152
  /* Enable or disable target specific optimizations.
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     Not all targets have optimizations to enable.
155
 
156
     Normally these optimizations are disabled by default but some targets
157
     prefer to enable them by default.  So this field is a tri-state variable.
158
     The values are:
159
 
160
     zero: Enable the optimizations (either from --relax being specified on
161
       the command line or the backend's before_allocation emulation function.
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163
     positive: The user has requested that these optimizations be disabled.
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       (Via the --no-relax command line option).
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     negative: The optimizations are disabled.  (Set when initializing the
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       args_type structure in ldmain.c:main.  */
168
  signed int disable_target_specific_optimizations;
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#define RELAXATION_DISABLED_BY_DEFAULT (command_line.disable_target_specific_optimizations < 0)
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#define RELAXATION_DISABLED_BY_USER    (command_line.disable_target_specific_optimizations > 0)
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#define RELAXATION_ENABLED (command_line.disable_target_specific_optimizations == 0)
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#define DISABLE_RELAXATION do { command_line.disable_target_specific_optimizations = 1; } while (0)
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#define ENABLE_RELAXATION  do { command_line.disable_target_specific_optimizations = 0; } while (0)
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175
  /* If TRUE, build MIPS embedded PIC relocation tables in the output
176
     file.  */
177
  bfd_boolean embedded_relocs;
178
 
179
  /* If TRUE, force generation of a file with a .exe file.  */
180
  bfd_boolean force_exe_suffix;
181
 
182
  /* If TRUE, generate a cross reference report.  */
183
  bfd_boolean cref;
184
 
185
  /* If TRUE (which is the default), warn about mismatched input
186
     files.  */
187
  bfd_boolean warn_mismatch;
188
 
189
  /* Warn on attempting to open an incompatible library during a library
190
     search.  */
191
  bfd_boolean warn_search_mismatch;
192
 
193
  /* If non-zero check section addresses, once computed,
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     for overlaps.  Relocatable links only check when this is > 0.  */
195
  signed char check_section_addresses;
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197
  /* If TRUE allow the linking of input files in an unknown architecture
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     assuming that the user knows what they are doing.  This was the old
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     behaviour of the linker.  The new default behaviour is to reject such
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     input files.  */
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  bfd_boolean accept_unknown_input_arch;
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  /* If TRUE we'll just print the default output on stdout.  */
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  bfd_boolean print_output_format;
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206 145 khays
  /* Big or little endian as set on command line.  */
207
  enum endian_enum endian;
208
 
209
  /* -Bsymbolic and -Bsymbolic-functions, as set on command line.  */
210
  enum symbolic_enum symbolic;
211
 
212
  /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
213
     and --dynamic-list FILE, as set on command line.  */
214
  enum dynamic_list_enum dynamic_list;
215
 
216
  /* Name of runtime interpreter to invoke.  */
217
  char *interpreter;
218
 
219
  /* Name to give runtime libary from the -soname argument.  */
220
  char *soname;
221
 
222
  /* Runtime library search path from the -rpath argument.  */
223
  char *rpath;
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225
  /* Link time runtime library search path from the -rpath-link
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     argument.  */
227
  char *rpath_link;
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229
  /* Name of shared object whose symbol table should be filtered with
230
     this shared object.  From the --filter option.  */
231
  char *filter_shlib;
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233
  /* Name of shared object for whose symbol table this shared object
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     is an auxiliary filter.  From the --auxiliary option.  */
235
  char **auxiliary_filters;
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237
  /* A version symbol to be applied to the symbol names found in the
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     .exports sections.  */
239
  char *version_exports_section;
240
 
241
  /* Default linker script.  */
242
  char *default_script;
243
} args_type;
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245
extern args_type command_line;
246
 
247
typedef int token_code_type;
248
 
249
typedef struct {
250
  bfd_boolean magic_demand_paged;
251
  bfd_boolean make_executable;
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253
  /* If TRUE, doing a dynamic link.  */
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  bfd_boolean dynamic_link;
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  /* If TRUE, -shared is supported.  */
257
  /* ??? A better way to do this is perhaps to define this in the
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     ld_emulation_xfer_struct since this is really a target dependent
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     parameter.  */
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  bfd_boolean has_shared;
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262
  /* If TRUE, build constructors.  */
263
  bfd_boolean build_constructors;
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265
  /* If TRUE, warn about any constructors.  */
266
  bfd_boolean warn_constructors;
267
 
268
  /* If TRUE, warn about merging common symbols with others.  */
269
  bfd_boolean warn_common;
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271
  /* If TRUE, only warn once about a particular undefined symbol.  */
272
  bfd_boolean warn_once;
273
 
274
  /* If TRUE, warn if multiple global-pointers are needed (Alpha
275
     only).  */
276
  bfd_boolean warn_multiple_gp;
277
 
278
  /* If TRUE, warn if the starting address of an output section
279
     changes due to the alignment of an input section.  */
280
  bfd_boolean warn_section_align;
281
 
282
  /* If TRUE, warning messages are fatal */
283
  bfd_boolean fatal_warnings;
284
 
285
  sort_order sort_common;
286
 
287
  bfd_boolean text_read_only;
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289
  bfd_boolean stats;
290
 
291
  /* If set, orphan input sections will be mapped to separate output
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     sections.  */
293
  bfd_boolean unique_orphan_sections;
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295
  /* If set, only search library directories explicitly selected
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     on the command line.  */
297
  bfd_boolean only_cmd_line_lib_dirs;
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299
  /* If set, numbers and absolute symbols are simply treated as
300
     numbers everywhere.  */
301
  bfd_boolean sane_expr;
302
 
303
  /* The rpath separation character.  Usually ':'.  */
304
  char rpath_separator;
305
 
306
  char *map_filename;
307
  FILE *map_file;
308
 
309
  unsigned int split_by_reloc;
310
  bfd_size_type split_by_file;
311
 
312
  bfd_size_type specified_data_size;
313
 
314
  /* The size of the hash table to use.  */
315
  unsigned long hash_table_size;
316
 
317
  /* The maximum page size for ELF.  */
318
  bfd_vma maxpagesize;
319
 
320
  /* The common page size for ELF.  */
321
  bfd_vma commonpagesize;
322
} ld_config_type;
323
 
324
extern ld_config_type config;
325
 
326
extern FILE * saved_script_handle;
327
extern bfd_boolean force_make_executable;
328
 
329
extern int yyparse (void);
330
extern void add_cref (const char *, bfd *, asection *, bfd_vma);
331
extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
332
extern void output_cref (FILE *);
333
extern void check_nocrossrefs (void);
334
extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
335
 
336
/* If gcc >= 2.6, we can give a function name, too.  */
337
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
338
#define __PRETTY_FUNCTION__  NULL
339
#endif
340
 
341
#undef abort
342
#define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
343
 
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#endif

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