| 1 | /* ld-emul.h - Linker emulation header file
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| 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2002
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| 3 | Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GLD, the Gnu Linker.
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| 6 |
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| 7 | GLD is free software; you can redistribute it and/or modify
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| 8 | it under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 1, or (at your option)
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| 10 | any later version.
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| 11 |
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| 12 | GLD is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details. */
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| 16 |
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| 17 | #ifndef LDEMUL_H
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| 18 | #define LDEMUL_H
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| 19 |
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| 20 | extern void ldemul_hll
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| 21 | PARAMS ((char *));
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| 22 | extern void ldemul_syslib
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| 23 | PARAMS ((char *));
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| 24 | extern void ldemul_after_parse
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| 25 | PARAMS ((void));
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| 26 | extern void ldemul_before_parse
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| 27 | PARAMS ((void));
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| 28 | extern void ldemul_after_open
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| 29 | PARAMS ((void));
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| 30 | extern void ldemul_after_allocation
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| 31 | PARAMS ((void));
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| 32 | extern void ldemul_before_allocation
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| 33 | PARAMS ((void));
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| 34 | extern void ldemul_set_output_arch
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| 35 | PARAMS ((void));
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| 36 | extern char *ldemul_choose_target
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| 37 | PARAMS ((int, char**));
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| 38 | extern void ldemul_choose_mode
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| 39 | PARAMS ((char *));
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| 40 | extern void ldemul_list_emulations
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| 41 | PARAMS ((FILE *));
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| 42 | extern void ldemul_list_emulation_options
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| 43 | PARAMS ((FILE *));
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| 44 | extern char *ldemul_get_script
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| 45 | PARAMS ((int *isfile));
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| 46 | extern void ldemul_finish
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| 47 | PARAMS ((void));
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| 48 | extern void ldemul_set_symbols
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| 49 | PARAMS ((void));
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| 50 | extern void ldemul_create_output_section_statements
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| 51 | PARAMS ((void));
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| 52 | extern bfd_boolean ldemul_place_orphan
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| 53 | PARAMS ((struct lang_input_statement_struct *, asection *));
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| 54 | extern bfd_boolean ldemul_parse_args
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| 55 | PARAMS ((int, char **));
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| 56 | extern void ldemul_add_options
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| 57 | PARAMS ((int, char **, int, struct option **, int, struct option **));
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| 58 | extern bfd_boolean ldemul_handle_option
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| 59 | PARAMS ((int));
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| 60 | extern bfd_boolean ldemul_unrecognized_file
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| 61 | PARAMS ((struct lang_input_statement_struct *));
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| 62 | extern bfd_boolean ldemul_recognized_file
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| 63 | PARAMS ((struct lang_input_statement_struct *));
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| 64 | extern bfd_boolean ldemul_open_dynamic_archive
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| 65 | PARAMS ((const char *, struct search_dirs *,
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| 66 | struct lang_input_statement_struct *));
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| 67 | extern char *ldemul_default_target
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| 68 | PARAMS ((int, char**));
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| 69 | extern void after_parse_default
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| 70 | PARAMS ((void));
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| 71 | extern void after_open_default
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| 72 | PARAMS ((void));
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| 73 | extern void after_allocation_default
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| 74 | PARAMS ((void));
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| 75 | extern void before_allocation_default
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| 76 | PARAMS ((void));
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| 77 | extern void set_output_arch_default
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| 78 | PARAMS ((void));
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| 79 | extern void syslib_default
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| 80 | PARAMS ((char*));
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| 81 | extern void hll_default
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| 82 | PARAMS ((char*));
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| 83 | extern int ldemul_find_potential_libraries
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| 84 | PARAMS ((char *, struct lang_input_statement_struct *));
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| 85 | extern struct bfd_elf_version_expr *ldemul_new_vers_pattern
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| 86 | PARAMS ((struct bfd_elf_version_expr *));
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| 87 |
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| 88 | typedef struct ld_emulation_xfer_struct {
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| 89 | /* Run before parsing the command line and script file.
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| 90 | Set the architecture, maybe other things. */
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| 91 | void (*before_parse) PARAMS ((void));
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| 92 |
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| 93 | /* Handle the SYSLIB (low level library) script command. */
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| 94 | void (*syslib) PARAMS ((char *));
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| 95 |
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| 96 | /* Handle the HLL (high level library) script command. */
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| 97 | void (*hll) PARAMS ((char *));
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| 98 |
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| 99 | /* Run after parsing the command line and script file. */
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| 100 | void (*after_parse) PARAMS ((void));
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| 101 |
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| 102 | /* Run after opening all input files, and loading the symbols. */
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| 103 | void (*after_open) PARAMS ((void));
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| 104 |
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| 105 | /* Run after allocating output sections. */
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| 106 | void (*after_allocation) PARAMS ( (void));
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| 107 |
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| 108 | /* Set the output architecture and machine if possible. */
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| 109 | void (*set_output_arch) PARAMS ((void));
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| 110 |
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| 111 | /* Decide which target name to use. */
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| 112 | char * (*choose_target) PARAMS ((int, char**));
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| 113 |
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| 114 | /* Run before allocating output sections. */
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| 115 | void (*before_allocation) PARAMS ((void));
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| 116 |
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| 117 | /* Return the appropriate linker script. */
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| 118 | char * (*get_script) PARAMS ((int *isfile));
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| 119 |
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| 120 | /* The name of this emulation. */
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| 121 | char *emulation_name;
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| 122 |
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| 123 | /* The output format. */
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| 124 | char *target_name;
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| 125 |
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| 126 | /* Run after assigning values from the script. */
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| 127 | void (*finish) PARAMS ((void));
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| 128 |
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| 129 | /* Create any output sections needed by the target. */
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| 130 | void (*create_output_section_statements) PARAMS ((void));
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| 131 |
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| 132 | /* Try to open a dynamic library. ARCH is an architecture name, and
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| 133 | is normally the empty string. ENTRY is the lang_input_statement
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| 134 | that should be opened. */
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| 135 | bfd_boolean (*open_dynamic_archive)
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| 136 | PARAMS ((const char *arch, struct search_dirs *,
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| 137 | struct lang_input_statement_struct *entry));
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| 138 |
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| 139 | /* Place an orphan section. Return TRUE if it was placed, FALSE if
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| 140 | the default action should be taken. This field may be NULL, in
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| 141 | which case the default action will always be taken. */
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| 142 | bfd_boolean (*place_orphan)
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| 143 | PARAMS ((struct lang_input_statement_struct *, asection *));
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| 144 |
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| 145 | /* Run after assigning parsing with the args, but before
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| 146 | reading the script. Used to initialize symbols used in the script. */
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| 147 | void (*set_symbols) PARAMS ((void));
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| 148 |
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| 149 | /* Parse args which the base linker doesn't understand.
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| 150 | Return TRUE if the arg needs no further processing. */
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| 151 | bfd_boolean (*parse_args) PARAMS ((int, char **));
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| 152 |
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| 153 | /* Hook to add options to parameters passed by the base linker to
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| 154 | getopt_long and getopt_long_only calls. */
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| 155 | void (*add_options)
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| 156 | PARAMS ((int, char **, int, struct option **, int, struct option **));
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| 157 |
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| 158 | /* Companion to the above to handle an option. Returns TRUE if it is
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| 159 | one of our options. */
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| 160 | bfd_boolean (*handle_option) PARAMS ((int));
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| 161 |
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| 162 | /* Run to handle files which are not recognized as object files or
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| 163 | archives. Return TRUE if the file was handled. */
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| 164 | bfd_boolean (*unrecognized_file)
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| 165 | PARAMS ((struct lang_input_statement_struct *));
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| 166 |
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| 167 | /* Run to list the command line options which parse_args handles. */
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| 168 | void (* list_options) PARAMS ((FILE *));
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| 169 |
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| 170 | /* Run to specially handle files which *are* recognized as object
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| 171 | files or archives. Return TRUE if the file was handled. */
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| 172 | bfd_boolean (*recognized_file)
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| 173 | PARAMS ((struct lang_input_statement_struct *));
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| 174 |
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| 175 | /* Called when looking for libraries in a directory specified
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| 176 | via a linker command line option or linker script option.
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| 177 | Files that match the pattern "lib*.a" have already been scanned.
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| 178 | (For VMS files matching ":lib*.a" have also been scanned). */
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| 179 | int (* find_potential_libraries)
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| 180 | PARAMS ((char *, struct lang_input_statement_struct *));
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| 181 |
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| 182 | /* Called when adding a new version pattern. PowerPC64-ELF uses
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| 183 | this hook to add a pattern matching ".foo" for every "foo". */
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| 184 | struct bfd_elf_version_expr * (*new_vers_pattern)
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| 185 | PARAMS ((struct bfd_elf_version_expr *));
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| 186 |
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| 187 | /* Perform final action(s) on output file
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| 188 | Note: Added by the EMX/OS2 port, so keep it at the end! */
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| 189 | void (*finish_link) PARAMS ((char *));
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| 190 |
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| 191 | } ld_emulation_xfer_type;
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| 192 |
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| 193 | typedef enum {
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| 194 | intel_ic960_ld_mode_enum,
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| 195 | default_mode_enum,
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| 196 | intel_gld960_ld_mode_enum
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| 197 | } lang_emulation_mode_enum_type;
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| 198 |
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| 199 | extern ld_emulation_xfer_type *ld_emulations[];
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| 200 |
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| 201 | #endif
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