344 lines
10 KiB
C
344 lines
10 KiB
C
/* 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
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Free Software Foundation, Inc.
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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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};
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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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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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/* 1 => do not assign addresses to common symbols. */
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bfd_boolean inhibit_common_definition;
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/* Enable or disable target specific optimizations.
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Not all targets have optimizations to enable.
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Normally these optimizations are disabled by default but some targets
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prefer to enable them by default. So this field is a tri-state variable.
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The values are:
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zero: Enable the optimizations (either from --relax being specified on
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the command line or the backend's before_allocation emulation function.
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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. */
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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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/* If TRUE, build MIPS embedded PIC relocation tables in the output
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file. */
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bfd_boolean embedded_relocs;
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/* If TRUE, force generation of a file with a .exe file. */
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bfd_boolean force_exe_suffix;
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/* If TRUE, generate a cross reference report. */
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bfd_boolean cref;
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/* If TRUE (which is the default), warn about mismatched input
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files. */
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bfd_boolean warn_mismatch;
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/* Warn on attempting to open an incompatible library during a library
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search. */
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bfd_boolean warn_search_mismatch;
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/* If non-zero check section addresses, once computed,
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for overlaps. Relocatable links only check when this is > 0. */
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signed char check_section_addresses;
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/* 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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/* Big or little endian as set on command line. */
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enum endian_enum endian;
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/* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
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enum symbolic_enum symbolic;
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/* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
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and --dynamic-list FILE, as set on command line. */
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enum dynamic_list_enum dynamic_list;
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/* Name of runtime interpreter to invoke. */
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char *interpreter;
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/* Name to give runtime libary from the -soname argument. */
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char *soname;
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/* Runtime library search path from the -rpath argument. */
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char *rpath;
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/* Link time runtime library search path from the -rpath-link
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argument. */
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char *rpath_link;
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/* Name of shared object whose symbol table should be filtered with
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this shared object. From the --filter option. */
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char *filter_shlib;
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/* Name of shared object for whose symbol table this shared object
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is an auxiliary filter. From the --auxiliary option. */
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char **auxiliary_filters;
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/* A version symbol to be applied to the symbol names found in the
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.exports sections. */
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char *version_exports_section;
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/* Default linker script. */
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char *default_script;
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} args_type;
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extern args_type command_line;
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typedef int token_code_type;
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typedef struct {
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bfd_boolean magic_demand_paged;
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bfd_boolean make_executable;
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/* If TRUE, doing a dynamic link. */
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bfd_boolean dynamic_link;
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/* If TRUE, -shared is supported. */
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/* ??? 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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/* If TRUE, build constructors. */
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bfd_boolean build_constructors;
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/* If TRUE, warn about any constructors. */
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bfd_boolean warn_constructors;
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/* If TRUE, warn about merging common symbols with others. */
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bfd_boolean warn_common;
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/* If TRUE, only warn once about a particular undefined symbol. */
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bfd_boolean warn_once;
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/* If TRUE, warn if multiple global-pointers are needed (Alpha
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only). */
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bfd_boolean warn_multiple_gp;
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/* If TRUE, warn if the starting address of an output section
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changes due to the alignment of an input section. */
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bfd_boolean warn_section_align;
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/* If TRUE, warning messages are fatal */
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bfd_boolean fatal_warnings;
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sort_order sort_common;
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bfd_boolean text_read_only;
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bfd_boolean stats;
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/* If set, orphan input sections will be mapped to separate output
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sections. */
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bfd_boolean unique_orphan_sections;
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/* If set, only search library directories explicitly selected
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on the command line. */
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bfd_boolean only_cmd_line_lib_dirs;
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/* If set, numbers and absolute symbols are simply treated as
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numbers everywhere. */
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bfd_boolean sane_expr;
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/* The rpath separation character. Usually ':'. */
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char rpath_separator;
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char *map_filename;
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FILE *map_file;
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unsigned int split_by_reloc;
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bfd_size_type split_by_file;
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bfd_size_type specified_data_size;
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/* The size of the hash table to use. */
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unsigned long hash_table_size;
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/* The maximum page size for ELF. */
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bfd_vma maxpagesize;
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/* The common page size for ELF. */
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bfd_vma commonpagesize;
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} ld_config_type;
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extern ld_config_type config;
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extern FILE * saved_script_handle;
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extern bfd_boolean force_make_executable;
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/* Non-zero if we are processing a --defsym from the command line. */
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extern int parsing_defsym;
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extern int yyparse (void);
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extern void add_cref (const char *, bfd *, asection *, bfd_vma);
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extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
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extern void output_cref (FILE *);
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extern void check_nocrossrefs (void);
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extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
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/* If gcc >= 2.6, we can give a function name, too. */
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#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
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#define __PRETTY_FUNCTION__ NULL
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#endif
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#undef abort
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#define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
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#endif
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