1 /* ld-emul.h - Linker emulation header file 2 Copyright (C) 1991-2016 Free Software Foundation, Inc. 3 4 This file is part of the GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #ifndef LDEMUL_H 22 #define LDEMUL_H 23 24 /* Forward declaration for ldemul_add_options() and others. */ 25 struct option; 26 27 extern void ldemul_hll 28 (char *); 29 extern void ldemul_syslib 30 (char *); 31 extern void ldemul_after_parse 32 (void); 33 extern void ldemul_before_parse 34 (void); 35 extern void ldemul_after_open 36 (void); 37 extern void ldemul_after_allocation 38 (void); 39 extern void ldemul_before_allocation 40 (void); 41 extern void ldemul_set_output_arch 42 (void); 43 extern char *ldemul_choose_target 44 (int, char**); 45 extern void ldemul_choose_mode 46 (char *); 47 extern void ldemul_list_emulations 48 (FILE *); 49 extern void ldemul_list_emulation_options 50 (FILE *); 51 extern char *ldemul_get_script 52 (int *isfile); 53 extern void ldemul_finish 54 (void); 55 extern void ldemul_set_symbols 56 (void); 57 extern void ldemul_create_output_section_statements 58 (void); 59 extern lang_output_section_statement_type *ldemul_place_orphan 60 (asection *, const char *, int); 61 extern bfd_boolean ldemul_parse_args 62 (int, char **); 63 extern void ldemul_add_options 64 (int, char **, int, struct option **, int, struct option **); 65 extern bfd_boolean ldemul_handle_option 66 (int); 67 extern bfd_boolean ldemul_unrecognized_file 68 (struct lang_input_statement_struct *); 69 extern bfd_boolean ldemul_recognized_file 70 (struct lang_input_statement_struct *); 71 extern bfd_boolean ldemul_open_dynamic_archive 72 (const char *, struct search_dirs *, struct lang_input_statement_struct *); 73 extern char *ldemul_default_target 74 (int, char**); 75 extern void after_parse_default 76 (void); 77 extern void after_open_default 78 (void); 79 extern void after_allocation_default 80 (void); 81 extern void before_allocation_default 82 (void); 83 extern void finish_default 84 (void); 85 extern void finish_default 86 (void); 87 extern void set_output_arch_default 88 (void); 89 extern void syslib_default 90 (char*); 91 extern void hll_default 92 (char*); 93 extern int ldemul_find_potential_libraries 94 (char *, struct lang_input_statement_struct *); 95 extern struct bfd_elf_version_expr *ldemul_new_vers_pattern 96 (struct bfd_elf_version_expr *); 97 extern void ldemul_extra_map_file_text 98 (bfd *, struct bfd_link_info *, FILE *); 99 100 typedef struct ld_emulation_xfer_struct { 101 /* Run before parsing the command line and script file. 102 Set the architecture, maybe other things. */ 103 void (*before_parse) (void); 104 105 /* Handle the SYSLIB (low level library) script command. */ 106 void (*syslib) (char *); 107 108 /* Handle the HLL (high level library) script command. */ 109 void (*hll) (char *); 110 111 /* Run after parsing the command line and script file. */ 112 void (*after_parse) (void); 113 114 /* Run after opening all input files, and loading the symbols. */ 115 void (*after_open) (void); 116 117 /* Run after allocating output sections. */ 118 void (*after_allocation) (void); 119 120 /* Set the output architecture and machine if possible. */ 121 void (*set_output_arch) (void); 122 123 /* Decide which target name to use. */ 124 char * (*choose_target) (int, char**); 125 126 /* Run before allocating output sections. */ 127 void (*before_allocation) (void); 128 129 /* Return the appropriate linker script. */ 130 char * (*get_script) (int *isfile); 131 132 /* The name of this emulation. */ 133 char *emulation_name; 134 135 /* The output format. */ 136 char *target_name; 137 138 /* Run after assigning values from the script. */ 139 void (*finish) (void); 140 141 /* Create any output sections needed by the target. */ 142 void (*create_output_section_statements) (void); 143 144 /* Try to open a dynamic library. ARCH is an architecture name, and 145 is normally the empty string. ENTRY is the lang_input_statement 146 that should be opened. */ 147 bfd_boolean (*open_dynamic_archive) 148 (const char *arch, struct search_dirs *, 149 struct lang_input_statement_struct *entry); 150 151 /* Place an orphan section. Return TRUE if it was placed, FALSE if 152 the default action should be taken. This field may be NULL, in 153 which case the default action will always be taken. */ 154 lang_output_section_statement_type *(*place_orphan) 155 (asection *, const char *, int); 156 157 /* Run after assigning parsing with the args, but before 158 reading the script. Used to initialize symbols used in the script. */ 159 void (*set_symbols) (void); 160 161 /* Parse args which the base linker doesn't understand. 162 Return TRUE if the arg needs no further processing. */ 163 bfd_boolean (*parse_args) (int, char **); 164 165 /* Hook to add options to parameters passed by the base linker to 166 getopt_long and getopt_long_only calls. */ 167 void (*add_options) 168 (int, char **, int, struct option **, int, struct option **); 169 170 /* Companion to the above to handle an option. Returns TRUE if it is 171 one of our options. */ 172 bfd_boolean (*handle_option) (int); 173 174 /* Run to handle files which are not recognized as object files or 175 archives. Return TRUE if the file was handled. */ 176 bfd_boolean (*unrecognized_file) 177 (struct lang_input_statement_struct *); 178 179 /* Run to list the command line options which parse_args handles. */ 180 void (* list_options) (FILE *); 181 182 /* Run to specially handle files which *are* recognized as object 183 files or archives. Return TRUE if the file was handled. */ 184 bfd_boolean (*recognized_file) 185 (struct lang_input_statement_struct *); 186 187 /* Called when looking for libraries in a directory specified 188 via a linker command line option or linker script option. 189 Files that match the pattern "lib*.a" have already been scanned. 190 (For VMS files matching ":lib*.a" have also been scanned). */ 191 int (* find_potential_libraries) 192 (char *, struct lang_input_statement_struct *); 193 194 /* Called when adding a new version pattern. PowerPC64-ELF uses 195 this hook to add a pattern matching ".foo" for every "foo". */ 196 struct bfd_elf_version_expr * (*new_vers_pattern) 197 (struct bfd_elf_version_expr *); 198 199 /* Called when printing the map file, in case there are 200 emulation-specific sections for it. */ 201 void (*extra_map_file_text) 202 (bfd *, struct bfd_link_info *, FILE *); 203 204 } ld_emulation_xfer_type; 205 206 typedef enum { 207 intel_ic960_ld_mode_enum, 208 default_mode_enum, 209 intel_gld960_ld_mode_enum 210 } lang_emulation_mode_enum_type; 211 212 extern ld_emulation_xfer_type *ld_emulations[]; 213 214 #endif 215
