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5199 serge 1
/* ld-emul.h - Linker emulation header file
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   Copyright (C) 1991-2015 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 LDEMUL_H
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#define LDEMUL_H
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/* Forward declaration for ldemul_add_options() and others.  */
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struct option;
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extern void ldemul_hll
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  (char *);
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extern void ldemul_syslib
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  (char *);
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extern void ldemul_after_parse
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  (void);
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extern void ldemul_before_parse
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  (void);
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extern void ldemul_after_open
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  (void);
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extern void ldemul_after_allocation
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  (void);
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extern void ldemul_before_allocation
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  (void);
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extern void ldemul_set_output_arch
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  (void);
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extern char *ldemul_choose_target
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  (int, char**);
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extern void ldemul_choose_mode
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  (char *);
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extern void ldemul_list_emulations
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  (FILE *);
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extern void ldemul_list_emulation_options
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  (FILE *);
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extern char *ldemul_get_script
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  (int *isfile);
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extern void ldemul_finish
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  (void);
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extern void ldemul_set_symbols
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  (void);
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extern void ldemul_create_output_section_statements
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  (void);
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extern lang_output_section_statement_type *ldemul_place_orphan
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  (asection *, const char *, int);
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extern bfd_boolean ldemul_parse_args
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  (int, char **);
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extern void ldemul_add_options
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  (int, char **, int, struct option **, int, struct option **);
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extern bfd_boolean ldemul_handle_option
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  (int);
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extern bfd_boolean ldemul_unrecognized_file
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  (struct lang_input_statement_struct *);
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extern bfd_boolean ldemul_recognized_file
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  (struct lang_input_statement_struct *);
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extern bfd_boolean ldemul_open_dynamic_archive
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  (const char *, struct search_dirs *, struct lang_input_statement_struct *);
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extern char *ldemul_default_target
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  (int, char**);
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extern void after_parse_default
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  (void);
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extern void after_open_default
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  (void);
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extern void after_allocation_default
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  (void);
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extern void before_allocation_default
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  (void);
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extern void finish_default
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  (void);
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extern void finish_default
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  (void);
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extern void set_output_arch_default
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  (void);
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extern void syslib_default
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  (char*);
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extern void hll_default
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  (char*);
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extern int  ldemul_find_potential_libraries
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  (char *, struct lang_input_statement_struct *);
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extern struct bfd_elf_version_expr *ldemul_new_vers_pattern
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  (struct bfd_elf_version_expr *);
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extern void ldemul_extra_map_file_text
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  (bfd *, struct bfd_link_info *, FILE *);
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typedef struct ld_emulation_xfer_struct {
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  /* Run before parsing the command line and script file.
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     Set the architecture, maybe other things.  */
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  void   (*before_parse) (void);
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  /* Handle the SYSLIB (low level library) script command.  */
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  void   (*syslib) (char *);
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  /* Handle the HLL (high level library) script command.  */
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  void   (*hll) (char *);
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  /* Run after parsing the command line and script file.  */
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  void   (*after_parse) (void);
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  /* Run after opening all input files, and loading the symbols.  */
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  void   (*after_open) (void);
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  /* Run after allocating output sections.  */
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  void   (*after_allocation)  (void);
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  /* Set the output architecture and machine if possible.  */
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  void   (*set_output_arch) (void);
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  /* Decide which target name to use.  */
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  char * (*choose_target) (int, char**);
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  /* Run before allocating output sections.  */
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  void   (*before_allocation) (void);
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  /* Return the appropriate linker script.  */
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  char * (*get_script) (int *isfile);
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  /* The name of this emulation.  */
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  char *emulation_name;
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  /* The output format.  */
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  char *target_name;
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  /* Run after assigning values from the script.  */
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  void	(*finish) (void);
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  /* Create any output sections needed by the target.  */
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  void	(*create_output_section_statements) (void);
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  /* Try to open a dynamic library.  ARCH is an architecture name, and
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     is normally the empty string.  ENTRY is the lang_input_statement
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     that should be opened.  */
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  bfd_boolean (*open_dynamic_archive)
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    (const char *arch, struct search_dirs *,
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     struct lang_input_statement_struct *entry);
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  /* Place an orphan section.  Return TRUE if it was placed, FALSE if
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     the default action should be taken.  This field may be NULL, in
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     which case the default action will always be taken.  */
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  lang_output_section_statement_type *(*place_orphan)
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    (asection *, const char *, int);
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  /* Run after assigning parsing with the args, but before
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     reading the script.  Used to initialize symbols used in the script.  */
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  void	(*set_symbols) (void);
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  /* Parse args which the base linker doesn't understand.
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     Return TRUE if the arg needs no further processing.  */
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  bfd_boolean (*parse_args) (int, char **);
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  /* Hook to add options to parameters passed by the base linker to
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     getopt_long and getopt_long_only calls.  */
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  void (*add_options)
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    (int, char **, int, struct option **, int, struct option **);
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  /* Companion to the above to handle an option.  Returns TRUE if it is
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     one of our options.  */
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  bfd_boolean (*handle_option) (int);
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  /* Run to handle files which are not recognized as object files or
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     archives.  Return TRUE if the file was handled.  */
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  bfd_boolean (*unrecognized_file)
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    (struct lang_input_statement_struct *);
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  /* Run to list the command line options which parse_args handles.  */
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  void (* list_options) (FILE *);
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  /* Run to specially handle files which *are* recognized as object
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     files or archives.  Return TRUE if the file was handled.  */
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  bfd_boolean (*recognized_file)
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    (struct lang_input_statement_struct *);
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  /* Called when looking for libraries in a directory specified
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     via a linker command line option or linker script option.
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     Files that match the pattern "lib*.a" have already been scanned.
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     (For VMS files matching ":lib*.a" have also been scanned).  */
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  int (* find_potential_libraries)
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    (char *, struct lang_input_statement_struct *);
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  /* Called when adding a new version pattern.  PowerPC64-ELF uses
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     this hook to add a pattern matching ".foo" for every "foo".  */
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  struct bfd_elf_version_expr * (*new_vers_pattern)
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    (struct bfd_elf_version_expr *);
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  /* Called when printing the map file, in case there are
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     emulation-specific sections for it.  */
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  void (*extra_map_file_text)
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    (bfd *, struct bfd_link_info *, FILE *);
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} ld_emulation_xfer_type;
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typedef enum {
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  intel_ic960_ld_mode_enum,
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  default_mode_enum,
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  intel_gld960_ld_mode_enum
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} lang_emulation_mode_enum_type;
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extern ld_emulation_xfer_type *ld_emulations[];
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#endif