Commit | Line | Data |
---|---|---|
57fc1e90 ILT |
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 | /* AIX emulation code for ${EMULATION_NAME} | |
7 | Copyright (C) 1991, 1993, 1995 Free Software Foundation, Inc. | |
8 | Written by Steve Chamberlain <sac@cygnus.com> | |
9 | AIX support by Ian Lance Taylor <ian@cygnus.com> | |
10 | ||
11 | This file is part of GLD, the Gnu Linker. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #define TARGET_IS_${EMULATION_NAME} | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "libiberty.h" | |
32 | #include "getopt.h" | |
33 | #include "bfdlink.h" | |
34 | ||
35 | #include <ctype.h> | |
36 | ||
37 | #include "ld.h" | |
38 | #include "ldmain.h" | |
39 | #include "ldemul.h" | |
40 | #include "ldfile.h" | |
41 | #include "ldmisc.h" | |
42 | #include "ldexp.h" | |
43 | #include "ldlang.h" | |
cf79773c | 44 | #include "ldctor.h" |
2a80ec10 | 45 | #include "ldgram.h" |
57fc1e90 ILT |
46 | |
47 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
48 | static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **)); | |
cf79773c | 49 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); |
57fc1e90 ILT |
50 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); |
51 | static void gld${EMULATION_NAME}_read_file PARAMS ((const char *, boolean)); | |
52 | static void gld${EMULATION_NAME}_free PARAMS ((PTR)); | |
cf79773c ILT |
53 | static void gld${EMULATION_NAME}_find_relocs |
54 | PARAMS ((lang_statement_union_type *)); | |
55 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
57fc1e90 ILT |
56 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); |
57 | ||
58 | /* The file alignment required for each section. */ | |
59 | static unsigned long file_align; | |
60 | ||
61 | /* The maximum size the stack is permitted to grow. This is stored in | |
62 | the a.out header. */ | |
63 | static unsigned long maxstack; | |
64 | ||
65 | /* The maximum data size. This is stored in the a.out header. */ | |
66 | static unsigned long maxdata; | |
67 | ||
68 | /* Whether to perform garbage collection. */ | |
69 | static int gc = 1; | |
70 | ||
71 | /* The module type to use. */ | |
72 | static unsigned short modtype = ('1' << 8) | 'L'; | |
73 | ||
74 | /* Whether the .text section must be read-only (i.e., no relocs | |
75 | permitted). */ | |
76 | static int textro; | |
77 | ||
5666490b | 78 | /* Structure used to hold import file list. */ |
57fc1e90 ILT |
79 | |
80 | struct filelist | |
81 | { | |
82 | struct filelist *next; | |
83 | const char *name; | |
84 | }; | |
85 | ||
86 | /* List of import files. */ | |
d29120d2 | 87 | static struct filelist *import_files; |
57fc1e90 | 88 | |
5666490b ILT |
89 | /* List of export symbols read from the export files. */ |
90 | ||
91 | struct export_symbol_list | |
92 | { | |
93 | struct export_symbol_list *next; | |
94 | const char *name; | |
95 | boolean syscall; | |
96 | }; | |
97 | ||
98 | static struct export_symbol_list *export_symbols; | |
99 | ||
100 | /* This routine is called before anything else is done. */ | |
57fc1e90 ILT |
101 | |
102 | static void | |
103 | gld${EMULATION_NAME}_before_parse() | |
104 | { | |
105 | #ifndef TARGET_ /* I.e., if not generic. */ | |
106 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
107 | #endif /* not TARGET_ */ | |
108 | } | |
109 | ||
110 | /* Handle AIX specific options. */ | |
111 | ||
112 | static int | |
113 | gld${EMULATION_NAME}_parse_args (argc, argv) | |
114 | int argc; | |
115 | char **argv; | |
116 | { | |
117 | int prevoptind = optind; | |
118 | int prevopterr = opterr; | |
5666490b | 119 | int indx; |
57fc1e90 ILT |
120 | int longind; |
121 | int optc; | |
122 | long val; | |
123 | char *end; | |
124 | ||
125 | #define OPTION_IGNORE (300) | |
126 | #define OPTION_AUTOIMP (OPTION_IGNORE + 1) | |
127 | #define OPTION_ERNOTOK (OPTION_AUTOIMP + 1) | |
128 | #define OPTION_EROK (OPTION_ERNOTOK + 1) | |
129 | #define OPTION_EXPORT (OPTION_EROK + 1) | |
130 | #define OPTION_IMPORT (OPTION_EXPORT + 1) | |
131 | #define OPTION_MAXDATA (OPTION_IMPORT + 1) | |
132 | #define OPTION_MAXSTACK (OPTION_MAXDATA + 1) | |
133 | #define OPTION_MODTYPE (OPTION_MAXSTACK + 1) | |
134 | #define OPTION_NOAUTOIMP (OPTION_MODTYPE + 1) | |
135 | #define OPTION_NOSTRCMPCT (OPTION_NOAUTOIMP + 1) | |
2a80ec10 ILT |
136 | #define OPTION_PD (OPTION_NOSTRCMPCT + 1) |
137 | #define OPTION_PT (OPTION_PD + 1) | |
138 | #define OPTION_STRCMPCT (OPTION_PT + 1) | |
57fc1e90 ILT |
139 | |
140 | static struct option longopts[] = { | |
141 | {"basis", no_argument, NULL, OPTION_IGNORE}, | |
142 | {"bautoimp", no_argument, NULL, OPTION_AUTOIMP}, | |
143 | {"bcomprld", no_argument, NULL, OPTION_IGNORE}, | |
144 | {"bcrld", no_argument, NULL, OPTION_IGNORE}, | |
145 | {"bcror31", no_argument, NULL, OPTION_IGNORE}, | |
146 | {"bD", required_argument, NULL, OPTION_MAXDATA}, | |
147 | {"bE", required_argument, NULL, OPTION_EXPORT}, | |
148 | {"bernotok", no_argument, NULL, OPTION_ERNOTOK}, | |
149 | {"berok", no_argument, NULL, OPTION_EROK}, | |
150 | {"berrmsg", no_argument, NULL, OPTION_IGNORE}, | |
151 | {"bexport", required_argument, NULL, OPTION_EXPORT}, | |
152 | {"bf", no_argument, NULL, OPTION_ERNOTOK}, | |
153 | {"bgc", no_argument, &gc, 1}, | |
154 | {"bh", required_argument, NULL, OPTION_IGNORE}, | |
155 | {"bhalt", required_argument, NULL, OPTION_IGNORE}, | |
156 | {"bI", required_argument, NULL, OPTION_IMPORT}, | |
157 | {"bimport", required_argument, NULL, OPTION_IMPORT}, | |
158 | {"bmaxdata", required_argument, NULL, OPTION_MAXDATA}, | |
159 | {"bmaxstack", required_argument, NULL, OPTION_MAXSTACK}, | |
160 | {"bM", required_argument, NULL, OPTION_MODTYPE}, | |
161 | {"bmodtype", required_argument, NULL, OPTION_MODTYPE}, | |
162 | {"bnoautoimp", no_argument, NULL, OPTION_NOAUTOIMP}, | |
163 | {"bnodelcsect", no_argument, NULL, OPTION_IGNORE}, | |
164 | {"bnogc", no_argument, &gc, 0}, | |
165 | {"bnso", no_argument, NULL, OPTION_NOAUTOIMP}, | |
166 | {"bnostrcmpct", no_argument, NULL, OPTION_NOSTRCMPCT}, | |
167 | {"bnotextro", no_argument, &textro, 0}, | |
168 | {"bnro", no_argument, &textro, 0}, | |
2a80ec10 ILT |
169 | {"bpD", required_argument, NULL, OPTION_PD}, |
170 | {"bpT", required_argument, NULL, OPTION_PT}, | |
57fc1e90 ILT |
171 | {"bro", no_argument, &textro, 1}, |
172 | {"bS", required_argument, NULL, OPTION_MAXSTACK}, | |
173 | {"bso", no_argument, NULL, OPTION_AUTOIMP}, | |
174 | {"bstrcmpct", no_argument, NULL, OPTION_STRCMPCT}, | |
175 | {"btextro", no_argument, &textro, 1}, | |
c7c8b500 | 176 | {"static", no_argument, NULL, OPTION_NOAUTOIMP}, |
57fc1e90 ILT |
177 | {NULL, no_argument, NULL, 0} |
178 | }; | |
179 | ||
180 | /* Options supported by the AIX linker which we do not support: -f, | |
181 | -S, -v, -Z, -bbindcmds, -bbinder, -bbindopts, -bcalls, -bcaps, | |
182 | -bcror15, -bdebugopt, -bdbg, -bdelcsect, -bex?, -bfilelist, -bfl, | |
183 | -bgcbypass, -bglink, -binsert, -bi, -bloadmap, -bl, -bmap, -bnl, | |
184 | -bnobind, -bnocomprld, -bnocrld, -bnoerrmsg, -bnoglink, | |
185 | -bnoloadmap, -bnl, -bnoobjreorder, -bnoquiet, -bnoreorder, | |
186 | -bnotypchk, -bnox, -bquiet, -bR, -brename, -breorder, -btypchk, | |
187 | -bx, -bX, -bxref. */ | |
188 | ||
5666490b | 189 | /* If the current option starts with -b, change the first : to an =. |
57fc1e90 ILT |
190 | The AIX linker uses : to separate the option from the argument; |
191 | changing it to = lets us treat it as a getopt option. */ | |
5666490b ILT |
192 | indx = optind; |
193 | if (indx == 0) | |
194 | indx = 1; | |
195 | if (indx < argc && strncmp (argv[indx], "-b", 2) == 0) | |
57fc1e90 ILT |
196 | { |
197 | char *s; | |
198 | ||
5666490b | 199 | for (s = argv[indx]; *s != '\0'; s++) |
57fc1e90 ILT |
200 | { |
201 | if (*s == ':') | |
202 | { | |
203 | *s = '='; | |
204 | break; | |
205 | } | |
206 | } | |
207 | } | |
208 | ||
209 | opterr = 0; | |
210 | optc = getopt_long_only (argc, argv, "-D:H:KT:z", longopts, &longind); | |
211 | opterr = prevopterr; | |
212 | ||
213 | switch (optc) | |
214 | { | |
215 | default: | |
216 | optind = prevoptind; | |
217 | return 0; | |
218 | ||
1764521f ILT |
219 | case 0: |
220 | /* Long option which just sets a flag. */ | |
221 | break; | |
222 | ||
57fc1e90 ILT |
223 | case 'D': |
224 | val = strtol (optarg, &end, 0); | |
225 | if (*end != '\0') | |
226 | einfo ("%P: warning: ignoring invalid -D number %s\n", optarg); | |
227 | else if (val != -1) | |
228 | lang_section_start (".data", exp_intop (val)); | |
229 | break; | |
230 | ||
231 | case 'H': | |
232 | val = strtoul (optarg, &end, 0); | |
233 | if (*end != '\0' | |
234 | || (val & (val - 1)) != 0) | |
235 | einfo ("%P: warning: ignoring invalid -H number %s\n", optarg); | |
236 | else | |
237 | file_align = val; | |
238 | break; | |
239 | ||
240 | case 'K': | |
241 | case 'z': | |
242 | /* FIXME: This should use the page size for the target system. */ | |
243 | file_align = 4096; | |
244 | break; | |
245 | ||
246 | case 'T': | |
247 | /* On AIX this is the same as GNU ld -Ttext. When we see -T | |
248 | number, we assume the AIX option is intended. Otherwise, we | |
249 | assume the usual GNU ld -T option is intended. We can't just | |
250 | ignore the AIX option, because gcc passes it to the linker. */ | |
251 | val = strtoul (optarg, &end, 0); | |
252 | if (*end != '\0') | |
253 | { | |
254 | optind = prevoptind; | |
255 | return 0; | |
256 | } | |
257 | lang_section_start (".text", exp_intop (val)); | |
258 | break; | |
259 | ||
260 | case OPTION_IGNORE: | |
261 | break; | |
262 | ||
263 | case OPTION_AUTOIMP: | |
264 | link_info.static_link = false; | |
265 | break; | |
266 | ||
267 | case OPTION_ERNOTOK: | |
268 | force_make_executable = false; | |
269 | break; | |
270 | ||
271 | case OPTION_EROK: | |
272 | force_make_executable = true; | |
273 | break; | |
274 | ||
275 | case OPTION_EXPORT: | |
5666490b ILT |
276 | gld${EMULATION_NAME}_read_file (optarg, false); |
277 | break; | |
278 | ||
57fc1e90 ILT |
279 | case OPTION_IMPORT: |
280 | { | |
281 | struct filelist *n; | |
282 | struct filelist **flpp; | |
283 | ||
284 | n = (struct filelist *) xmalloc (sizeof (struct filelist)); | |
285 | n->next = NULL; | |
286 | n->name = optarg; | |
5666490b | 287 | flpp = &import_files; |
57fc1e90 ILT |
288 | while (*flpp != NULL) |
289 | flpp = &(*flpp)->next; | |
290 | *flpp = n; | |
291 | } | |
292 | break; | |
293 | ||
294 | case OPTION_MAXDATA: | |
295 | val = strtoul (optarg, &end, 0); | |
296 | if (*end != '\0') | |
297 | einfo ("%P: warning: ignoring invalid -bmaxdata number %s\n", | |
298 | optarg); | |
299 | else | |
300 | maxdata = val; | |
301 | break; | |
302 | ||
303 | case OPTION_MAXSTACK: | |
304 | val = strtoul (optarg, &end, 0); | |
305 | if (*end != '\0') | |
306 | einfo ("%P: warning: ignoring invalid -bmaxstack number %s\n", | |
307 | optarg); | |
308 | else | |
309 | maxstack = val; | |
310 | break; | |
311 | ||
312 | case OPTION_MODTYPE: | |
313 | if (*optarg == 'S') | |
314 | { | |
315 | link_info.shared = true; | |
316 | ++optarg; | |
317 | } | |
318 | if (*optarg == '\0' || optarg[1] == '\0') | |
319 | einfo ("%P: warning: ignoring invalid module type %s\n", optarg); | |
320 | else | |
321 | modtype = (*optarg << 8) | optarg[1]; | |
322 | break; | |
323 | ||
324 | case OPTION_NOAUTOIMP: | |
325 | link_info.static_link = true; | |
326 | break; | |
327 | ||
328 | case OPTION_NOSTRCMPCT: | |
329 | config.traditional_format = true; | |
330 | break; | |
331 | ||
2a80ec10 ILT |
332 | case OPTION_PD: |
333 | /* This sets the page that the .data section is supposed to | |
334 | start on. The offset within the page should still be the | |
335 | offset within the file, so we need to build an appropriate | |
336 | expression. */ | |
337 | val = strtoul (optarg, &end, 0); | |
338 | if (*end != '\0') | |
339 | einfo ("%P: warning: ignoring invalid -pD number %s\n", optarg); | |
340 | else | |
341 | { | |
342 | etree_type *t; | |
343 | ||
344 | t = exp_binop ('+', | |
345 | exp_intop (val), | |
346 | exp_binop ('&', | |
347 | exp_nameop (NAME, "."), | |
348 | exp_intop (0xfff))); | |
349 | t = exp_binop ('&', | |
350 | exp_binop ('+', t, exp_intop (7)), | |
351 | exp_intop (~ (bfd_vma) 7)); | |
352 | lang_section_start (".data", t); | |
353 | } | |
354 | break; | |
355 | ||
356 | case OPTION_PT: | |
357 | /* This set the page that the .text section is supposed to start | |
358 | on. The offset within the page should still be the offset | |
359 | within the file. */ | |
360 | val = strtoul (optarg, &end, 0); | |
361 | if (*end != '\0') | |
362 | einfo ("%P: warning: ignoring invalid -pT number %s\n", optarg); | |
363 | else | |
364 | { | |
365 | etree_type *t; | |
366 | ||
367 | t = exp_binop ('+', | |
368 | exp_intop (val), | |
369 | exp_nameop (SIZEOF_HEADERS, NULL)); | |
370 | t = exp_binop ('&', | |
371 | exp_binop ('+', t, exp_intop (7)), | |
372 | exp_intop (~ (bfd_vma) 7)); | |
373 | lang_section_start (".text", t); | |
374 | } | |
375 | break; | |
376 | ||
57fc1e90 ILT |
377 | case OPTION_STRCMPCT: |
378 | config.traditional_format = false; | |
379 | break; | |
380 | } | |
381 | ||
382 | return 1; | |
383 | } | |
384 | ||
cf79773c ILT |
385 | /* This is called after the input files have been opened. */ |
386 | ||
387 | static void | |
388 | gld${EMULATION_NAME}_after_open () | |
389 | { | |
390 | boolean r; | |
391 | struct set_info *p; | |
392 | ||
393 | /* Call ldctor_build_sets, after pretending that this is a | |
394 | relocateable link. We do this because AIX requires relocation | |
395 | entries for all references to symbols, even in a final | |
396 | executable. */ | |
397 | r = link_info.relocateable; | |
398 | link_info.relocateable = true; | |
399 | ldctor_build_sets (); | |
400 | link_info.relocateable = r; | |
401 | ||
402 | /* For each set, record the size, so that the XCOFF backend can | |
403 | output the correct csect length. */ | |
404 | for (p = sets; p != (struct set_info *) NULL; p = p->next) | |
405 | { | |
406 | bfd_size_type size; | |
407 | ||
408 | /* If the symbol is defined, we may have been invoked from | |
409 | collect, and the sets may already have been built, so we do | |
410 | not do anything. */ | |
411 | if (p->h->type == bfd_link_hash_defined | |
412 | || p->h->type == bfd_link_hash_defweak) | |
413 | continue; | |
414 | ||
415 | if (p->reloc != BFD_RELOC_CTOR) | |
416 | { | |
417 | /* Handle this if we need to. */ | |
418 | abort (); | |
419 | } | |
420 | ||
421 | size = (p->count + 2) * 4; | |
422 | if (! bfd_xcoff_link_record_set (output_bfd, &link_info, p->h, size)) | |
423 | einfo ("%F%P: bfd_xcoff_link_record_set failed: %E\n"); | |
424 | } | |
425 | } | |
426 | ||
57fc1e90 ILT |
427 | /* This is called after the sections have been attached to output |
428 | sections, but before any sizes or addresses have been set. */ | |
429 | ||
430 | static void | |
431 | gld${EMULATION_NAME}_before_allocation () | |
432 | { | |
433 | struct filelist *fl; | |
5666490b | 434 | struct export_symbol_list *el; |
57fc1e90 ILT |
435 | char *libpath; |
436 | ||
437 | /* Handle the import and export files, if any. */ | |
438 | for (fl = import_files; fl != NULL; fl = fl->next) | |
439 | gld${EMULATION_NAME}_read_file (fl->name, true); | |
5666490b ILT |
440 | for (el = export_symbols; el != NULL; el = el->next) |
441 | { | |
442 | struct bfd_link_hash_entry *h; | |
443 | ||
444 | h = bfd_link_hash_lookup (link_info.hash, el->name, false, false, false); | |
445 | if (h == NULL) | |
446 | einfo ("%P%F: bfd_link_hash_lookup of export symbol failed: %E\n"); | |
447 | if (! bfd_xcoff_export_symbol (output_bfd, &link_info, h, el->syscall)) | |
448 | einfo ("%P%F: bfd_xcoff_export_symbol failed: %E\n"); | |
449 | } | |
57fc1e90 | 450 | |
cf79773c ILT |
451 | /* Track down all relocations called for by the linker script (these |
452 | are typically constructor/destructor entries created by | |
453 | CONSTRUCTORS) and let the backend know it will need to create | |
454 | .loader relocs for them. */ | |
455 | lang_for_each_statement (gld${EMULATION_NAME}_find_relocs); | |
456 | ||
57fc1e90 ILT |
457 | /* We need to build LIBPATH from the -L arguments. If any -rpath |
458 | arguments were used, though, we use -rpath instead, as a GNU | |
459 | extension. */ | |
460 | if (command_line.rpath != NULL) | |
461 | libpath = command_line.rpath; | |
462 | else if (search_head == NULL) | |
463 | libpath = (char *) ""; | |
464 | else | |
465 | { | |
466 | size_t len; | |
467 | search_dirs_type *search; | |
468 | ||
469 | len = strlen (search_head->name); | |
470 | libpath = xmalloc (len + 1); | |
471 | strcpy (libpath, search_head->name); | |
472 | for (search = search_head->next; search != NULL; search = search->next) | |
473 | { | |
474 | size_t nlen; | |
475 | ||
476 | nlen = strlen (search->name); | |
477 | libpath = xrealloc (libpath, len + nlen + 2); | |
478 | libpath[len] = ':'; | |
479 | strcpy (libpath + len + 1, search->name); | |
480 | len += nlen + 1; | |
481 | } | |
482 | } | |
483 | ||
484 | /* Let the XCOFF backend set up the .loader section. */ | |
485 | if (! bfd_xcoff_size_dynamic_sections (output_bfd, &link_info, libpath, | |
486 | entry_symbol, file_align, | |
487 | maxstack, maxdata, | |
488 | gc ? true : false, | |
489 | modtype, | |
490 | textro ? true : false)) | |
491 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
492 | } | |
493 | ||
5666490b ILT |
494 | /* Read an import or export file. For an import file, this is called |
495 | by the before_allocation emulation routine. For an export file, | |
496 | this is called by the parse_args emulation routine. */ | |
57fc1e90 ILT |
497 | |
498 | static void | |
499 | gld${EMULATION_NAME}_read_file (filename, import) | |
500 | const char *filename; | |
501 | boolean import; | |
502 | { | |
503 | struct obstack *o; | |
504 | FILE *f; | |
505 | int lineno; | |
506 | int c; | |
507 | boolean keep; | |
508 | const char *imppath; | |
509 | const char *impfile; | |
510 | const char *impmember; | |
511 | ||
512 | o = (struct obstack *) xmalloc (sizeof (struct obstack)); | |
513 | obstack_specify_allocation (o, 0, 0, xmalloc, gld${EMULATION_NAME}_free); | |
514 | ||
515 | f = fopen (filename, "r"); | |
516 | if (f == NULL) | |
517 | { | |
518 | bfd_set_error (bfd_error_system_call); | |
519 | einfo ("%F%s: %E\n", filename); | |
520 | } | |
521 | ||
522 | keep = false; | |
523 | ||
524 | imppath = NULL; | |
525 | impfile = NULL; | |
526 | impmember = NULL; | |
527 | ||
528 | lineno = 0; | |
529 | while ((c = getc (f)) != EOF) | |
530 | { | |
531 | char *s; | |
532 | char *symname; | |
533 | boolean syscall; | |
534 | bfd_vma address; | |
535 | struct bfd_link_hash_entry *h; | |
536 | ||
537 | if (c != '\n') | |
538 | { | |
539 | obstack_1grow (o, c); | |
540 | continue; | |
541 | } | |
542 | ||
543 | obstack_1grow (o, '\0'); | |
544 | ++lineno; | |
545 | ||
546 | s = (char *) obstack_base (o); | |
547 | while (isspace ((unsigned char) *s)) | |
548 | ++s; | |
549 | if (*s == '\0' | |
550 | || *s == '*' | |
551 | || (*s == '#' && s[1] == ' ') | |
552 | || (! import && *s == '#' && s[1] == '!')) | |
553 | { | |
554 | obstack_free (o, obstack_base (o)); | |
555 | continue; | |
556 | } | |
557 | ||
558 | if (*s == '#' && s[1] == '!') | |
559 | { | |
560 | s += 2; | |
561 | while (isspace ((unsigned char) *s)) | |
562 | ++s; | |
563 | if (*s == '\0') | |
564 | { | |
565 | imppath = NULL; | |
566 | impfile = NULL; | |
567 | impmember = NULL; | |
568 | obstack_free (o, obstack_base (o)); | |
569 | } | |
570 | else if (*s == '(') | |
571 | einfo ("%F%s%d: #! ([member]) is not supported in import files", | |
572 | filename, lineno); | |
573 | else | |
574 | { | |
575 | char cs; | |
576 | char *file; | |
577 | ||
578 | (void) obstack_finish (o); | |
579 | keep = true; | |
580 | imppath = s; | |
581 | impfile = NULL; | |
582 | while (! isspace ((unsigned char) *s) && *s != '(' && *s != '\0') | |
583 | { | |
584 | if (*s == '/') | |
585 | file = s + 1; | |
586 | ++s; | |
587 | } | |
588 | if (file != NULL) | |
589 | { | |
590 | file[-1] = '\0'; | |
591 | impfile = file; | |
592 | if (imppath == file - 1) | |
593 | imppath = "/"; | |
594 | } | |
595 | else | |
596 | { | |
597 | impfile = imppath; | |
598 | imppath = ""; | |
599 | } | |
600 | cs = *s; | |
601 | *s = '\0'; | |
602 | while (isspace ((unsigned char) cs)) | |
603 | { | |
604 | ++s; | |
605 | cs = *s; | |
606 | } | |
607 | if (cs != '(') | |
608 | { | |
609 | impmember = ""; | |
610 | if (cs != '\0') | |
611 | einfo ("%s:%d: warning: syntax error in import file\n", | |
612 | filename, lineno); | |
613 | } | |
614 | else | |
615 | { | |
616 | ++s; | |
617 | impmember = s; | |
618 | while (*s != ')' && *s != '\0') | |
619 | ++s; | |
620 | if (*s == ')') | |
621 | *s = '\0'; | |
622 | else | |
623 | einfo ("%s:%d: warning: syntax error in import file\n", | |
624 | filename, lineno); | |
625 | } | |
626 | } | |
627 | ||
628 | continue; | |
629 | } | |
630 | ||
631 | /* This is a symbol to be imported or exported. */ | |
632 | symname = s; | |
633 | syscall = false; | |
634 | address = (bfd_vma) -1; | |
635 | ||
636 | while (! isspace ((unsigned char) *s) && *s != '\0') | |
637 | ++s; | |
638 | if (*s != '\0') | |
639 | { | |
640 | char *se; | |
641 | ||
642 | *s++ = '\0'; | |
643 | ||
644 | while (isspace ((unsigned char) *s)) | |
645 | ++s; | |
646 | ||
647 | se = s; | |
648 | while (! isspace ((unsigned char) *se) && *se != '\0') | |
649 | ++se; | |
650 | if (*se != '\0') | |
651 | { | |
652 | *se++ = '\0'; | |
653 | while (isspace ((unsigned char) *se)) | |
654 | ++se; | |
655 | if (*se != '\0') | |
656 | einfo ("%s%d: warning: syntax error in import/export file\n", | |
657 | filename, lineno); | |
658 | } | |
659 | ||
660 | if (strcasecmp (s, "svc") == 0 | |
661 | || strcasecmp (s, "syscall") == 0) | |
662 | syscall = true; | |
663 | else | |
664 | { | |
665 | char *end; | |
666 | ||
667 | address = strtoul (s, &end, 0); | |
668 | if (*end != '\0') | |
669 | einfo ("%s:%d: warning: syntax error in import/export file\n", | |
670 | filename, lineno); | |
671 | } | |
672 | } | |
673 | ||
5666490b | 674 | if (! import) |
57fc1e90 | 675 | { |
5666490b ILT |
676 | struct export_symbol_list *n; |
677 | ||
678 | ldlang_add_undef (symname); | |
679 | n = ((struct export_symbol_list *) | |
680 | xmalloc (sizeof (struct export_symbol_list))); | |
681 | n->next = export_symbols; | |
682 | n->name = buystring (symname); | |
683 | n->syscall = syscall; | |
684 | export_symbols = n; | |
57fc1e90 ILT |
685 | } |
686 | else | |
687 | { | |
5666490b ILT |
688 | h = bfd_link_hash_lookup (link_info.hash, symname, false, false, |
689 | true); | |
690 | if (h == NULL || h->type == bfd_link_hash_new) | |
691 | { | |
692 | /* We can just ignore attempts to import an unreferenced | |
693 | symbol. */ | |
694 | } | |
695 | else | |
696 | { | |
697 | if (! bfd_xcoff_import_symbol (output_bfd, &link_info, h, | |
698 | address, imppath, impfile, | |
699 | impmember)) | |
700 | einfo ("%X%s:%d: failed to import symbol %s: %E\n", | |
701 | filename, lineno, symname); | |
702 | } | |
57fc1e90 ILT |
703 | } |
704 | ||
705 | obstack_free (o, obstack_base (o)); | |
706 | } | |
707 | ||
708 | if (obstack_object_size (o) > 0) | |
709 | { | |
710 | einfo ("%s:%d: warning: ignoring unterminated last line\n", | |
711 | filename, lineno); | |
712 | obstack_free (o, obstack_base (o)); | |
713 | } | |
714 | ||
715 | if (! keep) | |
716 | { | |
717 | obstack_free (o, NULL); | |
718 | free (o); | |
719 | } | |
720 | } | |
721 | ||
722 | /* This routine saves us from worrying about declaring free. */ | |
723 | ||
724 | static void | |
725 | gld${EMULATION_NAME}_free (p) | |
726 | PTR p; | |
727 | { | |
728 | free (p); | |
729 | } | |
730 | ||
cf79773c ILT |
731 | /* This is called by the before_allocation routine via |
732 | lang_for_each_statement. It looks for relocations and assignments | |
733 | to symbols. */ | |
734 | ||
735 | static void | |
736 | gld${EMULATION_NAME}_find_relocs (s) | |
737 | lang_statement_union_type *s; | |
738 | { | |
739 | if (s->header.type == lang_reloc_statement_enum) | |
740 | { | |
741 | lang_reloc_statement_type *rs; | |
742 | ||
743 | rs = &s->reloc_statement; | |
744 | if (rs->name == NULL) | |
745 | einfo ("%F%P: only relocations against symbols are permitted\n"); | |
746 | if (! bfd_xcoff_link_count_reloc (output_bfd, &link_info, rs->name)) | |
747 | einfo ("%F%P: bfd_xcoff_link_count_reloc failed: %E\n"); | |
748 | } | |
749 | ||
750 | if (s->header.type == lang_assignment_statement_enum) | |
751 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
752 | } | |
753 | ||
754 | /* Look through an expression for an assignment statement. */ | |
755 | ||
756 | static void | |
757 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
758 | etree_type *exp; | |
759 | { | |
760 | struct bfd_link_hash_entry *h; | |
761 | ||
762 | switch (exp->type.node_class) | |
763 | { | |
764 | case etree_provide: | |
765 | h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, | |
766 | false, false, false); | |
767 | if (h == NULL) | |
768 | break; | |
769 | /* Fall through. */ | |
770 | case etree_assign: | |
771 | if (strcmp (exp->assign.dst, ".") != 0) | |
772 | { | |
773 | if (! bfd_xcoff_record_link_assignment (output_bfd, &link_info, | |
774 | exp->assign.dst)) | |
775 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
776 | exp->assign.dst); | |
777 | } | |
778 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
779 | break; | |
780 | ||
781 | case etree_binary: | |
782 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
783 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
784 | break; | |
785 | ||
786 | case etree_trinary: | |
787 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
788 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
789 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
790 | break; | |
791 | ||
792 | case etree_unary: | |
793 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
794 | break; | |
795 | ||
796 | default: | |
797 | break; | |
798 | } | |
799 | } | |
800 | ||
57fc1e90 ILT |
801 | static char * |
802 | gld${EMULATION_NAME}_get_script(isfile) | |
803 | int *isfile; | |
804 | EOF | |
805 | ||
806 | if test -n "$COMPILE_IN" | |
807 | then | |
808 | # Scripts compiled in. | |
809 | ||
810 | # sed commands to quote an ld script as a C string. | |
811 | sc="-f ${srcdir}/emultempl/stringify.sed" | |
812 | ||
813 | cat >>e${EMULATION_NAME}.c <<EOF | |
814 | { | |
815 | *isfile = 0; | |
816 | ||
817 | if (link_info.relocateable == true && config.build_constructors == true) | |
818 | return | |
819 | EOF | |
820 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
821 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
822 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
823 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
824 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
825 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
826 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
827 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
828 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
829 | echo '; }' >> e${EMULATION_NAME}.c | |
830 | ||
831 | else | |
832 | # Scripts read from the filesystem. | |
833 | ||
834 | cat >>e${EMULATION_NAME}.c <<EOF | |
835 | { | |
836 | *isfile = 1; | |
837 | ||
838 | if (link_info.relocateable == true && config.build_constructors == true) | |
839 | return "ldscripts/${EMULATION_NAME}.xu"; | |
840 | else if (link_info.relocateable == true) | |
841 | return "ldscripts/${EMULATION_NAME}.xr"; | |
842 | else if (!config.text_read_only) | |
843 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
844 | else if (!config.magic_demand_paged) | |
845 | return "ldscripts/${EMULATION_NAME}.xn"; | |
846 | else | |
847 | return "ldscripts/${EMULATION_NAME}.x"; | |
848 | } | |
849 | EOF | |
850 | ||
851 | fi | |
852 | ||
853 | cat >>e${EMULATION_NAME}.c <<EOF | |
854 | ||
855 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
856 | { | |
857 | gld${EMULATION_NAME}_before_parse, | |
858 | syslib_default, | |
859 | hll_default, | |
860 | after_parse_default, | |
cf79773c | 861 | gld${EMULATION_NAME}_after_open, |
57fc1e90 ILT |
862 | after_allocation_default, |
863 | set_output_arch_default, | |
864 | ldemul_default_target, | |
865 | gld${EMULATION_NAME}_before_allocation, | |
866 | gld${EMULATION_NAME}_get_script, | |
867 | "${EMULATION_NAME}", | |
868 | "${OUTPUT_FORMAT}", | |
869 | 0, /* finish */ | |
870 | 0, /* create_output_section_statements */ | |
871 | 0, /* open_dynamic_archive */ | |
872 | 0, /* place_orphan */ | |
873 | 0, /* set_symbols */ | |
874 | gld${EMULATION_NAME}_parse_args, | |
875 | }; | |
876 | EOF |