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 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 "config.h" 24#include "bfd.h" 25#include "sysdep.h" 26#include "getopt.h" 27#include "bfdlink.h" 28 29#include "ld.h" 30#include "ldmisc.h" 31#include "ldexp.h" 32#include "ldlang.h" 33#include "ldfile.h" 34#include "ldemul.h" 35#include "ldmain.h" 36#include "ldemul-list.h" 37 38static ld_emulation_xfer_type *ld_emulation; 39 40void 41ldemul_hll (char *name) 42{ 43 ld_emulation->hll (name); 44} 45 46void 47ldemul_syslib (char *name) 48{ 49 ld_emulation->syslib (name); 50} 51 52void 53ldemul_after_parse (void) 54{ 55 ld_emulation->after_parse (); 56} 57 58void 59ldemul_before_parse (void) 60{ 61 ld_emulation->before_parse (); 62} 63 64void 65ldemul_after_open (void) 66{ 67 ld_emulation->after_open (); 68} 69 70void 71ldemul_after_allocation (void) 72{ 73 ld_emulation->after_allocation (); 74} 75 76void 77ldemul_before_allocation (void) 78{ 79 ld_emulation->before_allocation (); 80} 81 82void 83ldemul_set_output_arch (void) 84{ 85 ld_emulation->set_output_arch (); 86} 87 88void 89ldemul_finish (void) 90{ 91 ld_emulation->finish (); 92} 93 94void 95ldemul_set_symbols (void) 96{ 97 if (ld_emulation->set_symbols) 98 ld_emulation->set_symbols (); 99} 100 101void 102ldemul_create_output_section_statements (void) 103{ 104 if (ld_emulation->create_output_section_statements) 105 ld_emulation->create_output_section_statements (); 106} 107 108char * 109ldemul_get_script (int *isfile) 110{ 111 return ld_emulation->get_script (isfile); 112} 113 114bfd_boolean 115ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search, 116 lang_input_statement_type *entry) 117{ 118 if (ld_emulation->open_dynamic_archive) 119 return (*ld_emulation->open_dynamic_archive) (arch, search, entry); 120 return FALSE; 121} 122 123bfd_boolean 124ldemul_place_orphan (asection *s) 125{ 126 if (ld_emulation->place_orphan) 127 return (*ld_emulation->place_orphan) (s); 128 return FALSE; 129} 130 131void 132ldemul_add_options (int ns, char **shortopts, int nl, 133 struct option **longopts, int nrl, 134 struct option **really_longopts) 135{ 136 if (ld_emulation->add_options) 137 (*ld_emulation->add_options) (ns, shortopts, nl, longopts, 138 nrl, really_longopts); 139} 140 141bfd_boolean 142ldemul_handle_option (int optc) 143{ 144 if (ld_emulation->handle_option) 145 return (*ld_emulation->handle_option) (optc); 146 return FALSE; 147} 148 149bfd_boolean 150ldemul_parse_args (int argc, char **argv) 151{ 152 /* Try and use the emulation parser if there is one. */ 153 if (ld_emulation->parse_args) 154 return (*ld_emulation->parse_args) (argc, argv); 155 return FALSE; 156} 157 158/* Let the emulation code handle an unrecognized file. */ 159 160bfd_boolean 161ldemul_unrecognized_file (lang_input_statement_type *entry) 162{ 163 if (ld_emulation->unrecognized_file) 164 return (*ld_emulation->unrecognized_file) (entry); 165 return FALSE; 166} 167 168/* Let the emulation code handle a recognized file. */ 169 170bfd_boolean 171ldemul_recognized_file (lang_input_statement_type *entry) 172{ 173 if (ld_emulation->recognized_file) 174 return (*ld_emulation->recognized_file) (entry); 175 return FALSE; 176} 177 178char * 179ldemul_choose_target (int argc, char **argv) 180{ 181 return ld_emulation->choose_target (argc, argv); 182} 183 184 185/* The default choose_target function. */ 186 187char * 188ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) 189{ 190 char *from_outside = getenv (TARGET_ENVIRON); 191 if (from_outside != (char *) NULL) 192 return from_outside; 193 return ld_emulation->target_name; 194} 195 196void 197after_parse_default (void) 198{ 199} 200 201void 202after_open_default (void) 203{ 204} 205 206void 207after_allocation_default (void) 208{ 209} 210 211void 212before_allocation_default (void) 213{ 214 if (!link_info.relocatable) 215 strip_excluded_output_sections (); 216} 217 218void 219finish_default (void) 220{ 221 if (!link_info.relocatable) 222 _bfd_fix_excluded_sec_syms (output_bfd, &link_info); 223} 224 225void 226set_output_arch_default (void) 227{ 228 /* Set the output architecture and machine if possible. */ 229 bfd_set_arch_mach (output_bfd, 230 ldfile_output_architecture, ldfile_output_machine); 231} 232 233void 234syslib_default (char *ignore ATTRIBUTE_UNUSED) 235{ 236 info_msg (_("%S SYSLIB ignored\n")); 237} 238 239void 240hll_default (char *ignore ATTRIBUTE_UNUSED) 241{ 242 info_msg (_("%S HLL ignored\n")); 243} 244 245ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST }; 246 247void 248ldemul_choose_mode (char *target) 249{ 250 ld_emulation_xfer_type **eptr = ld_emulations; 251 /* Ignore "gld" prefix. */ 252 if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd') 253 target += 3; 254 for (; *eptr; eptr++) 255 { 256 if (strcmp (target, (*eptr)->emulation_name) == 0) 257 { 258 ld_emulation = *eptr; 259 return; 260 } 261 } 262 einfo (_("%P: unrecognised emulation mode: %s\n"), target); 263 einfo (_("Supported emulations: ")); 264 ldemul_list_emulations (stderr); 265 einfo ("%F\n"); 266} 267 268void 269ldemul_list_emulations (FILE *f) 270{ 271 ld_emulation_xfer_type **eptr = ld_emulations; 272 bfd_boolean first = TRUE; 273 274 for (; *eptr; eptr++) 275 { 276 if (first) 277 first = FALSE; 278 else 279 fprintf (f, " "); 280 fprintf (f, "%s", (*eptr)->emulation_name); 281 } 282} 283 284void 285ldemul_list_emulation_options (FILE *f) 286{ 287 ld_emulation_xfer_type **eptr; 288 int options_found = 0; 289 290 for (eptr = ld_emulations; *eptr; eptr++) 291 { 292 ld_emulation_xfer_type *emul = *eptr; 293 294 if (emul->list_options) 295 { 296 fprintf (f, "%s: \n", emul->emulation_name); 297 298 emul->list_options (f); 299 300 options_found = 1; 301 } 302 } 303 304 if (! options_found) 305 fprintf (f, _(" no emulation specific options.\n")); 306} 307 308int 309ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry) 310{ 311 if (ld_emulation->find_potential_libraries) 312 return ld_emulation->find_potential_libraries (name, entry); 313 314 return 0; 315} 316 317struct bfd_elf_version_expr * 318ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry) 319{ 320 if (ld_emulation->new_vers_pattern) 321 entry = (*ld_emulation->new_vers_pattern) (entry); 322 return entry; 323} 324