Commit | Line | Data |
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252b5132 RH |
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! */ | |
5 | ||
6 | /* emulate the original gld for the given ${EMULATION_NAME} | |
a2b64bed | 7 | Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000 |
b71e2778 | 8 | Free Software Foundation, Inc. |
252b5132 RH |
9 | Written by Steve Chamberlain steve@cygnus.com |
10 | ||
11 | This file is part of GLD, the Gnu Linker. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #define TARGET_IS_${EMULATION_NAME} | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | #include "getopt.h" | |
33 | ||
34 | #include "ld.h" | |
35 | #include "ldmain.h" | |
252b5132 RH |
36 | #include "ldmisc.h" |
37 | ||
38 | #include "ldexp.h" | |
39 | #include "ldlang.h" | |
b71e2778 AM |
40 | #include "ldfile.h" |
41 | #include "ldemul.h" | |
252b5132 RH |
42 | |
43 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
44 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
45 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
46 | static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **)); | |
229cf42b | 47 | static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *)); |
1ac6a752 | 48 | static void gld${EMULATION_NAME}_finish PARAMS ((void)); |
252b5132 RH |
49 | |
50 | /* If true, then interworking stubs which support calls to old, non-interworking | |
51 | aware ARM code should be generated. */ | |
52 | ||
53 | static int support_old_code = 0; | |
6f798e5c | 54 | static char * thumb_entry_symbol = NULL; |
252b5132 RH |
55 | |
56 | #define OPTION_SUPPORT_OLD_CODE 300 | |
6f798e5c | 57 | #define OPTION_THUMB_ENTRY 301 |
252b5132 RH |
58 | |
59 | static struct option longopts[] = | |
60 | { | |
61 | {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, | |
6f798e5c | 62 | {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, |
252b5132 RH |
63 | {NULL, no_argument, NULL, 0} |
64 | }; | |
65 | ||
66 | static void | |
67 | gld${EMULATION_NAME}_list_options (file) | |
68 | FILE * file; | |
69 | { | |
70 | fprintf (file, _(" --support-old-code Support interworking with old code\n")); | |
6f798e5c | 71 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
252b5132 RH |
72 | } |
73 | ||
74 | static int | |
75 | gld${EMULATION_NAME}_parse_args (argc, argv) | |
76 | int argc; | |
77 | char ** argv; | |
78 | { | |
79 | int longind; | |
80 | int optc; | |
81 | int prevoptind = optind; | |
82 | int prevopterr = opterr; | |
83 | int wanterror; | |
84 | static int lastoptind = -1; | |
85 | ||
86 | if (lastoptind != optind) | |
87 | opterr = 0; | |
88 | ||
89 | wanterror = opterr; | |
90 | lastoptind = optind; | |
91 | ||
92 | optc = getopt_long_only (argc, argv, "-", longopts, & longind); | |
93 | opterr = prevopterr; | |
94 | ||
95 | switch (optc) | |
96 | { | |
97 | default: | |
98 | if (wanterror) | |
99 | xexit (1); | |
100 | optind = prevoptind; | |
101 | return 0; | |
102 | ||
103 | case OPTION_SUPPORT_OLD_CODE: | |
104 | support_old_code = 1; | |
105 | break; | |
6f798e5c NC |
106 | |
107 | case OPTION_THUMB_ENTRY: | |
108 | thumb_entry_symbol = optarg; | |
109 | break; | |
252b5132 RH |
110 | } |
111 | ||
112 | return 1; | |
113 | } | |
114 | \f | |
115 | static void | |
116 | gld${EMULATION_NAME}_before_parse () | |
117 | { | |
118 | #ifndef TARGET_ /* I.e., if not generic. */ | |
119 | ldfile_set_output_arch ("`echo ${ARCH}`"); | |
120 | #endif /* not TARGET_ */ | |
121 | } | |
122 | ||
123 | /* This is called after the sections have been attached to output | |
124 | sections, but before any sizes or addresses have been set. */ | |
125 | ||
126 | static void | |
127 | gld${EMULATION_NAME}_before_allocation () | |
128 | { | |
129 | /* we should be able to set the size of the interworking stub section */ | |
130 | ||
131 | /* Here we rummage through the found bfds to collect glue information */ | |
132 | /* FIXME: should this be based on a command line option? krk@cygnus.com */ | |
133 | { | |
134 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
135 | { | |
136 | if (! bfd_arm_process_before_allocation | |
137 | (is->the_bfd, & link_info, support_old_code)) | |
138 | { | |
139 | /* xgettext:c-format */ | |
140 | einfo (_("Errors encountered processing file %s"), is->filename); | |
141 | } | |
142 | } | |
143 | } | |
144 | ||
145 | /* We have seen it all. Allocate it, and carry on */ | |
146 | bfd_arm_allocate_interworking_sections (& link_info); | |
147 | } | |
148 | ||
149 | static void | |
150 | gld${EMULATION_NAME}_after_open () | |
151 | { | |
f11523b0 | 152 | if (strstr (bfd_get_target (output_bfd), "arm") == NULL) |
252b5132 | 153 | { |
f11523b0 NC |
154 | /* The arm backend needs special fields in the output hash structure. |
155 | These will only be created if the output format is an arm format, | |
156 | hence we do not support linking and changing output formats at the | |
157 | same time. Use a link followed by objcopy to change output formats. */ | |
158 | einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); | |
159 | return; | |
252b5132 | 160 | } |
f11523b0 NC |
161 | |
162 | { | |
163 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
164 | { | |
165 | if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) | |
166 | break; | |
167 | } | |
168 | } | |
252b5132 RH |
169 | } |
170 | ||
6f798e5c NC |
171 | static void |
172 | gld${EMULATION_NAME}_finish PARAMS((void)) | |
173 | { | |
174 | struct bfd_link_hash_entry * h; | |
175 | ||
176 | if (thumb_entry_symbol == NULL) | |
177 | return; | |
178 | ||
179 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true); | |
180 | ||
181 | if (h != (struct bfd_link_hash_entry *) NULL | |
182 | && (h->type == bfd_link_hash_defined | |
183 | || h->type == bfd_link_hash_defweak) | |
184 | && h->u.def.section->output_section != NULL) | |
185 | { | |
186 | static char buffer[32]; | |
187 | bfd_vma val; | |
188 | ||
189 | /* Special procesing is required for a Thumb entry symbol. The | |
190 | bottom bit of its address must be set. */ | |
191 | val = (h->u.def.value | |
192 | + bfd_get_section_vma (output_bfd, | |
193 | h->u.def.section->output_section) | |
194 | + h->u.def.section->output_offset); | |
195 | ||
196 | val |= 1; | |
197 | ||
198 | /* Now convert this value into a string and store it in entry_symbol | |
199 | where the lang_finish() function will pick it up. */ | |
200 | buffer[0] = '0'; | |
201 | buffer[1] = 'x'; | |
202 | ||
203 | sprintf_vma (buffer + 2, val); | |
204 | ||
205 | if (entry_symbol != NULL && entry_from_cmdline) | |
206 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), | |
207 | thumb_entry_symbol, entry_symbol); | |
208 | entry_symbol = buffer; | |
209 | } | |
210 | else | |
211 | einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); | |
212 | } | |
213 | ||
252b5132 RH |
214 | static char * |
215 | gld${EMULATION_NAME}_get_script (isfile) | |
216 | int *isfile; | |
217 | EOF | |
218 | ||
219 | if test -n "$COMPILE_IN" | |
220 | then | |
221 | # Scripts compiled in. | |
222 | ||
223 | # sed commands to quote an ld script as a C string. | |
597e2591 | 224 | sc="-f stringify.sed" |
252b5132 RH |
225 | |
226 | cat >>e${EMULATION_NAME}.c <<EOF | |
227 | { | |
228 | *isfile = 0; | |
229 | ||
230 | if (link_info.relocateable == true && config.build_constructors == true) | |
231 | return | |
232 | EOF | |
233 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
234 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
235 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
236 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
237 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
238 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
239 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
240 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
241 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
242 | echo '; }' >> e${EMULATION_NAME}.c | |
243 | ||
244 | else | |
245 | # Scripts read from the filesystem. | |
246 | ||
247 | cat >>e${EMULATION_NAME}.c <<EOF | |
248 | { | |
249 | *isfile = 1; | |
250 | ||
251 | if (link_info.relocateable == true && config.build_constructors == true) | |
252 | return "ldscripts/${EMULATION_NAME}.xu"; | |
253 | else if (link_info.relocateable == true) | |
254 | return "ldscripts/${EMULATION_NAME}.xr"; | |
255 | else if (!config.text_read_only) | |
256 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
257 | else if (!config.magic_demand_paged) | |
258 | return "ldscripts/${EMULATION_NAME}.xn"; | |
259 | else | |
260 | return "ldscripts/${EMULATION_NAME}.x"; | |
261 | } | |
262 | EOF | |
263 | ||
264 | fi | |
265 | ||
266 | cat >>e${EMULATION_NAME}.c <<EOF | |
267 | ||
268 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
269 | { | |
270 | gld${EMULATION_NAME}_before_parse, | |
271 | syslib_default, | |
272 | hll_default, | |
273 | after_parse_default, | |
274 | gld${EMULATION_NAME}_after_open, | |
275 | after_allocation_default, | |
276 | set_output_arch_default, | |
277 | ldemul_default_target, | |
278 | gld${EMULATION_NAME}_before_allocation, | |
279 | gld${EMULATION_NAME}_get_script, | |
280 | "${EMULATION_NAME}", | |
281 | "${OUTPUT_FORMAT}", | |
e1c47aa4 AM |
282 | gld${EMULATION_NAME}_finish, |
283 | NULL, /* create output section statements */ | |
284 | NULL, /* open dynamic archive */ | |
285 | NULL, /* place orphan */ | |
286 | NULL, /* set symbols */ | |
252b5132 | 287 | gld${EMULATION_NAME}_parse_args, |
e1c47aa4 AM |
288 | NULL, /* unrecognised file */ |
289 | gld${EMULATION_NAME}_list_options, | |
40d109bf AM |
290 | NULL, /* recognized file */ |
291 | NULL /* find_potential_libraries */ | |
252b5132 RH |
292 | }; |
293 | EOF |