Subversion Repositories openrisc_2011-10-31

/* ld.h -- general linker header file

   Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,

   2001, 2002, 2003, 2004, 2005, 2006, 2007

   Free Software Foundation, Inc.

   This file is part of the GNU Binutils.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#ifndef LD_H

#define LD_H

#ifdef HAVE_LOCALE_H

#endif

#ifndef SEEK_CUR

#define SEEK_CUR 1

#endif

#ifndef SEEK_END

#define SEEK_END 2

#endif

#if defined(__GNUC__) && !defined(C_ALLOCA)

# undef alloca

# define alloca __builtin_alloca

#else

# if defined(HAVE_ALLOCA_H) && !defined(C_ALLOCA)

#  include <alloca.h>

# else

#  ifndef alloca /* predefined by HP cc +Olibcalls */

#   if !defined (__STDC__) && !defined (__hpux)

char *alloca ();

#   else

void *alloca ();

#   endif /* __STDC__, __hpux */

#  endif /* alloca */

# endif /* HAVE_ALLOCA_H */

#endif

#ifdef HAVE_LOCALE_H

# ifndef ENABLE_NLS

   /* The Solaris version of locale.h always includes libintl.h.  If we have

      been configured with --disable-nls then ENABLE_NLS will not be defined

      and the dummy definitions of bindtextdomain (et al) below will conflict

      with the defintions in libintl.h.  So we define these values to prevent

      the bogus inclusion of libintl.h.  */

#  define _LIBINTL_H

#  define _LIBGETTEXT_H

# endif

# include <locale.h>

#endif

#ifdef ENABLE_NLS

# include <libintl.h>

# define _(String) gettext (String)

# ifdef gettext_noop

#  define N_(String) gettext_noop (String)

# else

#  define N_(String) (String)

# endif

#else

# define gettext(Msgid) (Msgid)

# define dgettext(Domainname, Msgid) (Msgid)

# define dcgettext(Domainname, Msgid, Category) (Msgid)

# define textdomain(Domainname) while (0) /* nothing */

# define bindtextdomain(Domainname, Dirname) while (0) /* nothing */

# define _(String) (String)

# define N_(String) (String)

#endif

/* Look in this environment name for the linker to pretend to be */

#define EMULATION_ENVIRON "LDEMULATION"

/* If in there look for the strings: */

/* Look in this variable for a target format */

#define TARGET_ENVIRON "GNUTARGET"

/* Input sections which are put in a section of this name are actually

   discarded.  */

#define DISCARD_SECTION_NAME "/DISCARD/"

/* A file name list */

typedef struct name_list {

  const char *name;

  struct name_list *next;

}

name_list;

/* A wildcard specification.  */

typedef enum {

  none, by_name, by_alignment, by_name_alignment, by_alignment_name

} sort_type;

extern sort_type sort_section;

struct wildcard_spec {

  const char *name;

  struct name_list *exclude_name_list;

  sort_type sorted;

};

struct wildcard_list {

  struct wildcard_list *next;

  struct wildcard_spec spec;

};

struct map_symbol_def {

  struct bfd_link_hash_entry *entry;

  struct map_symbol_def *next;

};

/* The initial part of fat_user_section_struct has to be idential with

   lean_user_section_struct.  */

typedef struct fat_user_section_struct {

  /* For input sections, when writing a map file: head / tail of a linked

     list of hash table entries for symbols defined in this section.  */

  struct map_symbol_def *map_symbol_def_head;

  struct map_symbol_def **map_symbol_def_tail;

} fat_section_userdata_type;

#define get_userdata(x) ((x)->userdata)

#define BYTE_SIZE       (1)

#define SHORT_SIZE      (2)

#define LONG_SIZE       (4)

#define QUAD_SIZE       (8)

typedef struct {

  /* 1 => assign space to common symbols even if `relocatable_output'.  */

  bfd_boolean force_common_definition;

  /* 1 => do not assign addresses to common symbols.  */

  bfd_boolean inhibit_common_definition;

  bfd_boolean relax;

  /* If TRUE, build MIPS embedded PIC relocation tables in the output

     file.  */

  bfd_boolean embedded_relocs;

  /* If TRUE, force generation of a file with a .exe file.  */

  bfd_boolean force_exe_suffix;

  /* If TRUE, generate a cross reference report.  */

  bfd_boolean cref;

  /* If TRUE (which is the default), warn about mismatched input

     files.  */

  bfd_boolean warn_mismatch;

  /* Warn on attempting to open an incompatible library during a library

     search.  */

  bfd_boolean warn_search_mismatch;

  /* If TRUE (the default) check section addresses, once compute,

     fpor overlaps.  */

  bfd_boolean check_section_addresses;

  /* If TRUE allow the linking of input files in an unknown architecture

     assuming that the user knows what they are doing.  This was the old

     behaviour of the linker.  The new default behaviour is to reject such

     input files.  */

  bfd_boolean accept_unknown_input_arch;

  /* Big or little endian as set on command line.  */

  enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE } endian;

  /* -Bsymbolic and -Bsymbolic-functions, as set on command line.  */

  enum

    {

      symbolic_unset = 0,

      symbolic,

      symbolic_functions,

    } symbolic;

  /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo

     and --dynamic-list FILE, as set on command line.  */

  enum

    {

      dynamic_list_unset = 0,

      dynamic_list_data,

      dynamic_list

    } dynamic_list;

  /* Name of runtime interpreter to invoke.  */

  char *interpreter;

  /* Name to give runtime libary from the -soname argument.  */

  char *soname;

  /* Runtime library search path from the -rpath argument.  */

  char *rpath;

  /* Link time runtime library search path from the -rpath-link

     argument.  */

  char *rpath_link;

  /* Name of shared object whose symbol table should be filtered with

     this shared object.  From the --filter option.  */

  char *filter_shlib;

  /* Name of shared object for whose symbol table this shared object

     is an auxiliary filter.  From the --auxiliary option.  */

  char **auxiliary_filters;

  /* A version symbol to be applied to the symbol names found in the

     .exports sections.  */

  char *version_exports_section;

  /* Default linker script.  */

  char *default_script;

} args_type;

extern args_type command_line;

typedef int token_code_type;

typedef struct {

  bfd_boolean magic_demand_paged;

  bfd_boolean make_executable;

  /* If TRUE, doing a dynamic link.  */

  bfd_boolean dynamic_link;

  /* If TRUE, -shared is supported.  */

  /* ??? A better way to do this is perhaps to define this in the

     ld_emulation_xfer_struct since this is really a target dependent

     parameter.  */

  bfd_boolean has_shared;

  /* If TRUE, build constructors.  */

  bfd_boolean build_constructors;

  /* If TRUE, warn about any constructors.  */

  bfd_boolean warn_constructors;

  /* If TRUE, warn about merging common symbols with others.  */

  bfd_boolean warn_common;

  /* If TRUE, only warn once about a particular undefined symbol.  */

  bfd_boolean warn_once;

  /* If TRUE, warn if multiple global-pointers are needed (Alpha

     only).  */

  bfd_boolean warn_multiple_gp;

  /* If TRUE, warn if the starting address of an output section

     changes due to the alignment of an input section.  */

  bfd_boolean warn_section_align;

  /* If TRUE, warning messages are fatal */

  bfd_boolean fatal_warnings;

  bfd_boolean sort_common;

  bfd_boolean text_read_only;

  bfd_boolean stats;

  /* If set, orphan input sections will be mapped to separate output

     sections.  */

  bfd_boolean unique_orphan_sections;

  /* If set, only search library directories explicitly selected

     on the command line.  */

  bfd_boolean only_cmd_line_lib_dirs;

  /* The rpath separation character.  Usually ':'.  */

  char rpath_separator;

  char *map_filename;

  FILE *map_file;

  unsigned int split_by_reloc;

  bfd_size_type split_by_file;

  bfd_size_type specified_data_size;

  /* The size of the hash table to use.  */

  bfd_size_type hash_table_size;

  /* The maximum page size for ELF.  */

  bfd_vma maxpagesize;

  /* The common page size for ELF.  */

  bfd_vma commonpagesize;

} ld_config_type;

extern ld_config_type config;

extern FILE * saved_script_handle;

extern bfd_boolean force_make_executable;

/* Non-zero if we are processing a --defsym from the command line.  */

extern int parsing_defsym;

extern int yyparse (void);

extern void add_cref (const char *, bfd *, asection *, bfd_vma);

extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);

extern void output_cref (FILE *);

extern void check_nocrossrefs (void);

extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;

/* If gcc >= 2.6, we can give a function name, too.  */

#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)

#define __PRETTY_FUNCTION__  NULL

#endif

#undef abort

#define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)

#endif