ldemul.c revision 302408
1/* ldemul.c -- clearing house for ld emulation states 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2005, 2007 4 Free Software Foundation, Inc. 5 6This file is part of GLD, the Gnu Linker. 7 8GLD is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GLD is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GLD; see the file COPYING. If not, write to the Free 20Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 2102110-1301, USA. */ 22 23#include "sysdep.h" 24#include "bfd.h" 25#include "getopt.h" 26#include "bfdlink.h" 27 28#include "ld.h" 29#include "ldmisc.h" 30#include "ldexp.h" 31#include "ldlang.h" 32#include "ldfile.h" 33#include "ldemul.h" 34#include "ldmain.h" 35#include "ldemul-list.h" 36 37static ld_emulation_xfer_type *ld_emulation; 38 39void 40ldemul_hll (char *name) 41{ 42 ld_emulation->hll (name); 43} 44 45void 46ldemul_syslib (char *name) 47{ 48 ld_emulation->syslib (name); 49} 50 51void 52ldemul_after_parse (void) 53{ 54 ld_emulation->after_parse (); 55} 56 57void 58ldemul_before_parse (void) 59{ 60 ld_emulation->before_parse (); 61} 62 63void 64ldemul_after_open (void) 65{ 66 ld_emulation->after_open (); 67} 68 69void 70ldemul_after_allocation (void) 71{ 72 ld_emulation->after_allocation (); 73} 74 75void 76ldemul_before_allocation (void) 77{ 78 ld_emulation->before_allocation (); 79} 80 81void 82ldemul_set_output_arch (void) 83{ 84 ld_emulation->set_output_arch (); 85} 86 87void 88ldemul_finish (void) 89{ 90 ld_emulation->finish (); 91} 92 93void 94ldemul_set_symbols (void) 95{ 96 if (ld_emulation->set_symbols) 97 ld_emulation->set_symbols (); 98} 99 100void 101ldemul_create_output_section_statements (void) 102{ 103 if (ld_emulation->create_output_section_statements) 104 ld_emulation->create_output_section_statements (); 105} 106 107char * 108ldemul_get_script (int *isfile) 109{ 110 return ld_emulation->get_script (isfile); 111} 112 113bfd_boolean 114ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search, 115 lang_input_statement_type *entry) 116{ 117 if (ld_emulation->open_dynamic_archive) 118 return (*ld_emulation->open_dynamic_archive) (arch, search, entry); 119 return FALSE; 120} 121 122bfd_boolean 123ldemul_place_orphan (asection *s) 124{ 125 if (ld_emulation->place_orphan) 126 return (*ld_emulation->place_orphan) (s); 127 return FALSE; 128} 129 130void 131ldemul_add_options (int ns, char **shortopts, int nl, 132 struct option **longopts, int nrl, 133 struct option **really_longopts) 134{ 135 if (ld_emulation->add_options) 136 (*ld_emulation->add_options) (ns, shortopts, nl, longopts, 137 nrl, really_longopts); 138} 139 140bfd_boolean 141ldemul_handle_option (int optc) 142{ 143 if (ld_emulation->handle_option) 144 return (*ld_emulation->handle_option) (optc); 145 return FALSE; 146} 147 148bfd_boolean 149ldemul_parse_args (int argc, char **argv) 150{ 151 /* Try and use the emulation parser if there is one. */ 152 if (ld_emulation->parse_args) 153 return (*ld_emulation->parse_args) (argc, argv); 154 return FALSE; 155} 156 157/* Let the emulation code handle an unrecognized file. */ 158 159bfd_boolean 160ldemul_unrecognized_file (lang_input_statement_type *entry) 161{ 162 if (ld_emulation->unrecognized_file) 163 return (*ld_emulation->unrecognized_file) (entry); 164 return FALSE; 165} 166 167/* Let the emulation code handle a recognized file. */ 168 169bfd_boolean 170ldemul_recognized_file (lang_input_statement_type *entry) 171{ 172 if (ld_emulation->recognized_file) 173 return (*ld_emulation->recognized_file) (entry); 174 return FALSE; 175} 176 177char * 178ldemul_choose_target (int argc, char **argv) 179{ 180 return ld_emulation->choose_target (argc, argv); 181} 182 183 184/* The default choose_target function. */ 185 186char * 187ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) 188{ 189 char *from_outside = getenv (TARGET_ENVIRON); 190 if (from_outside != (char *) NULL) 191 return from_outside; 192 return ld_emulation->target_name; 193} 194 195void 196after_parse_default (void) 197{ 198} 199 200void 201after_open_default (void) 202{ 203} 204 205void 206after_allocation_default (void) 207{ 208} 209 210void 211before_allocation_default (void) 212{ 213 if (!link_info.relocatable) 214 strip_excluded_output_sections (); 215} 216 217void 218finish_default (void) 219{ 220 if (!link_info.relocatable) 221 _bfd_fix_excluded_sec_syms (output_bfd, &link_info); 222} 223 224void 225set_output_arch_default (void) 226{ 227 /* Set the output architecture and machine if possible. */ 228 bfd_set_arch_mach (output_bfd, 229 ldfile_output_architecture, ldfile_output_machine); 230} 231 232void 233syslib_default (char *ignore ATTRIBUTE_UNUSED) 234{ 235 info_msg (_("%S SYSLIB ignored\n")); 236} 237 238void 239hll_default (char *ignore ATTRIBUTE_UNUSED) 240{ 241 info_msg (_("%S HLL ignored\n")); 242} 243 244ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; 245 246void 247ldemul_choose_mode (char *target) 248{ 249 ld_emulation_xfer_type **eptr = ld_emulations; 250 /* Ignore "gld" prefix. */ 251 if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') 252 target += 3; 253 for (; *eptr; eptr++) 254 { 255 if (strcmp (target, (*eptr)->emulation_name) == 0) 256 { 257 ld_emulation = *eptr; 258 return; 259 } 260 } 261 einfo (_("%P: unrecognised emulation mode: %s\n"), target); 262 einfo (_("Supported emulations: ")); 263 ldemul_list_emulations (stderr); 264 einfo ("%F\n"); 265} 266 267void 268ldemul_list_emulations (FILE *f) 269{ 270 ld_emulation_xfer_type **eptr = ld_emulations; 271 bfd_boolean first = TRUE; 272 273 for (; *eptr; eptr++) 274 { 275 if (first) 276 first = FALSE; 277 else 278 fprintf (f, " "); 279 fprintf (f, "%s", (*eptr)->emulation_name); 280 } 281} 282 283void 284ldemul_list_emulation_options (FILE *f) 285{ 286 ld_emulation_xfer_type **eptr; 287 int options_found = 0; 288 289 for (eptr = ld_emulations; *eptr; eptr++) 290 { 291 ld_emulation_xfer_type *emul = *eptr; 292 293 if (emul->list_options) 294 { 295 fprintf (f, "%s: \n", emul->emulation_name); 296 297 emul->list_options (f); 298 299 options_found = 1; 300 } 301 } 302 303 if (! options_found) 304 fprintf (f, _(" no emulation specific options.\n")); 305} 306 307int 308ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) 309{ 310 if (ld_emulation->find_potential_libraries) 311 return ld_emulation->find_potential_libraries (name, entry); 312 313 return 0; 314} 315 316struct bfd_elf_version_expr * 317ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) 318{ 319 if (ld_emulation->new_vers_pattern) 320 entry = (*ld_emulation->new_vers_pattern) (entry); 321 return entry; 322} 323