1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 cat >e${EMULATION_NAME}.c <<EOF
4 /* This file is is generated by a shell script. DO NOT EDIT! */
6 /* emulate the original gld for the given ${EMULATION_NAME}
7 Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
8 2004, 2005 Free Software Foundation, Inc.
9 Written by Steve Chamberlain steve@cygnus.com
11 This file is part of GLD, the Gnu Linker.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 #define TARGET_IS_${EMULATION_NAME}
43 /* If TRUE, then interworking stubs which support calls to old,
44 non-interworking aware ARM code should be generated. */
46 static int support_old_code = 0;
47 static char * thumb_entry_symbol = NULL;
49 #define OPTION_SUPPORT_OLD_CODE 300
50 #define OPTION_THUMB_ENTRY 301
53 gld${EMULATION_NAME}_add_options
54 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
55 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
56 struct option **really_longopts ATTRIBUTE_UNUSED)
58 static const struct option xtra_long[] = {
59 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
60 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
61 {NULL, no_argument, NULL, 0}
64 *longopts = xrealloc (*longopts,
65 nl * sizeof (struct option) + sizeof (xtra_long));
66 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
70 gld${EMULATION_NAME}_list_options (FILE *file)
72 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
73 fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
77 gld${EMULATION_NAME}_handle_option (int optc)
84 case OPTION_SUPPORT_OLD_CODE:
88 case OPTION_THUMB_ENTRY:
89 thumb_entry_symbol = optarg;
97 gld${EMULATION_NAME}_before_parse (void)
99 #ifndef TARGET_ /* I.e., if not generic. */
100 ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
101 #endif /* not TARGET_ */
104 /* This is called after the sections have been attached to output
105 sections, but before any sizes or addresses have been set. */
108 gld${EMULATION_NAME}_before_allocation (void)
110 /* we should be able to set the size of the interworking stub section */
112 /* Here we rummage through the found bfds to collect glue information */
113 /* FIXME: should this be based on a command line option? krk@cygnus.com */
115 LANG_FOR_EACH_INPUT_STATEMENT (is)
117 if (! bfd_arm_process_before_allocation
118 (is->the_bfd, & link_info, support_old_code))
120 /* xgettext:c-format */
121 einfo (_("Errors encountered processing file %s"), is->filename);
126 /* We have seen it all. Allocate it, and carry on */
127 bfd_arm_allocate_interworking_sections (& link_info);
129 before_allocation_default ();
133 gld${EMULATION_NAME}_after_open (void)
135 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
137 /* The arm backend needs special fields in the output hash structure.
138 These will only be created if the output format is an arm format,
139 hence we do not support linking and changing output formats at the
140 same time. Use a link followed by objcopy to change output formats. */
141 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
146 LANG_FOR_EACH_INPUT_STATEMENT (is)
148 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
155 gld${EMULATION_NAME}_finish (void)
157 struct bfd_link_hash_entry * h;
159 if (thumb_entry_symbol == NULL)
162 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
165 if (h != (struct bfd_link_hash_entry *) NULL
166 && (h->type == bfd_link_hash_defined
167 || h->type == bfd_link_hash_defweak)
168 && h->u.def.section->output_section != NULL)
170 static char buffer[32];
173 /* Special procesing is required for a Thumb entry symbol. The
174 bottom bit of its address must be set. */
175 val = (h->u.def.value
176 + bfd_get_section_vma (output_bfd,
177 h->u.def.section->output_section)
178 + h->u.def.section->output_offset);
182 /* Now convert this value into a string and store it in entry_symbol
183 where the lang_finish() function will pick it up. */
187 sprintf_vma (buffer + 2, val);
189 if (entry_symbol.name != NULL && entry_from_cmdline)
190 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
191 thumb_entry_symbol, entry_symbol.name);
192 entry_symbol.name = buffer;
195 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
201 gld${EMULATION_NAME}_get_script (int *isfile)
204 if test -n "$COMPILE_IN"
206 # Scripts compiled in.
208 # sed commands to quote an ld script as a C string.
209 sc="-f stringify.sed"
211 cat >>e${EMULATION_NAME}.c <<EOF
215 if (link_info.relocatable && config.build_constructors)
218 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
219 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
220 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
221 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
222 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
223 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
224 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
225 echo ' ; else return' >> e${EMULATION_NAME}.c
226 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
227 echo '; }' >> e${EMULATION_NAME}.c
230 # Scripts read from the filesystem.
232 cat >>e${EMULATION_NAME}.c <<EOF
236 if (link_info.relocatable && config.build_constructors)
237 return "ldscripts/${EMULATION_NAME}.xu";
238 else if (link_info.relocatable)
239 return "ldscripts/${EMULATION_NAME}.xr";
240 else if (!config.text_read_only)
241 return "ldscripts/${EMULATION_NAME}.xbn";
242 else if (!config.magic_demand_paged)
243 return "ldscripts/${EMULATION_NAME}.xn";
245 return "ldscripts/${EMULATION_NAME}.x";
251 cat >>e${EMULATION_NAME}.c <<EOF
253 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
255 gld${EMULATION_NAME}_before_parse,
259 gld${EMULATION_NAME}_after_open,
260 after_allocation_default,
261 set_output_arch_default,
262 ldemul_default_target,
263 gld${EMULATION_NAME}_before_allocation,
264 gld${EMULATION_NAME}_get_script,
267 gld${EMULATION_NAME}_finish,
268 NULL, /* create output section statements */
269 NULL, /* open dynamic archive */
270 NULL, /* place orphan */
271 NULL, /* set symbols */
272 NULL, /* parse_args */
273 gld${EMULATION_NAME}_add_options,
274 gld${EMULATION_NAME}_handle_option,
275 NULL, /* unrecognised file */
276 gld${EMULATION_NAME}_list_options,
277 NULL, /* recognized file */
278 NULL, /* find_potential_libraries */
279 NULL /* new_vers_pattern */