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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 | /* AIX emulation code for ${EMULATION_NAME} | |
b71e2778 AM |
7 | Copyright (C) 1991, 93, 95, 96, 97, 98, 99, 2000 |
8 | Free Software Foundation, Inc. | |
252b5132 RH |
9 | Written by Steve Chamberlain <sac@cygnus.com> |
10 | AIX support by Ian Lance Taylor <ian@cygnus.com> | |
11 | ||
12 | This file is part of GLD, the Gnu Linker. | |
13 | ||
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
27 | ||
28 | #define TARGET_IS_${EMULATION_NAME} | |
29 | ||
30 | #include "bfd.h" | |
31 | #include "sysdep.h" | |
32 | #include "libiberty.h" | |
33 | #include "getopt.h" | |
34 | #include "obstack.h" | |
35 | #include "bfdlink.h" | |
36 | ||
37 | #include <ctype.h> | |
38 | ||
39 | #include "ld.h" | |
40 | #include "ldmain.h" | |
252b5132 RH |
41 | #include "ldmisc.h" |
42 | #include "ldexp.h" | |
43 | #include "ldlang.h" | |
b71e2778 AM |
44 | #include "ldfile.h" |
45 | #include "ldemul.h" | |
252b5132 RH |
46 | #include "ldctor.h" |
47 | #include "ldgram.h" | |
48 | ||
49 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
50 | static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **)); | |
51 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); | |
52 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
53 | static void gld${EMULATION_NAME}_read_file PARAMS ((const char *, boolean)); | |
54 | static void gld${EMULATION_NAME}_free PARAMS ((PTR)); | |
55 | static void gld${EMULATION_NAME}_find_relocs | |
56 | PARAMS ((lang_statement_union_type *)); | |
57 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
58 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
59 | ||
60 | /* The file alignment required for each section. */ | |
61 | static unsigned long file_align; | |
62 | ||
63 | /* The maximum size the stack is permitted to grow. This is stored in | |
64 | the a.out header. */ | |
65 | static unsigned long maxstack; | |
66 | ||
67 | /* The maximum data size. This is stored in the a.out header. */ | |
68 | static unsigned long maxdata; | |
69 | ||
70 | /* Whether to perform garbage collection. */ | |
71 | static int gc = 1; | |
72 | ||
73 | /* The module type to use. */ | |
74 | static unsigned short modtype = ('1' << 8) | 'L'; | |
75 | ||
76 | /* Whether the .text section must be read-only (i.e., no relocs | |
77 | permitted). */ | |
78 | static int textro; | |
79 | ||
80 | /* Whether to implement Unix like linker semantics. */ | |
81 | static int unix_ld; | |
82 | ||
83 | /* Structure used to hold import file list. */ | |
84 | ||
85 | struct filelist | |
86 | { | |
87 | struct filelist *next; | |
88 | const char *name; | |
89 | }; | |
90 | ||
91 | /* List of import files. */ | |
92 | static struct filelist *import_files; | |
93 | ||
94 | /* List of export symbols read from the export files. */ | |
95 | ||
96 | struct export_symbol_list | |
97 | { | |
98 | struct export_symbol_list *next; | |
99 | const char *name; | |
100 | boolean syscall; | |
101 | }; | |
102 | ||
103 | static struct export_symbol_list *export_symbols; | |
104 | ||
105 | /* This routine is called before anything else is done. */ | |
106 | ||
107 | static void | |
108 | gld${EMULATION_NAME}_before_parse() | |
109 | { | |
110 | #ifndef TARGET_ /* I.e., if not generic. */ | |
111 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
112 | #endif /* not TARGET_ */ | |
113 | config.has_shared = true; | |
114 | } | |
115 | ||
116 | /* Handle AIX specific options. */ | |
117 | ||
118 | static int | |
119 | gld${EMULATION_NAME}_parse_args (argc, argv) | |
120 | int argc; | |
121 | char **argv; | |
122 | { | |
123 | int prevoptind = optind; | |
124 | int prevopterr = opterr; | |
125 | int indx; | |
126 | int longind; | |
127 | int optc; | |
128 | long val; | |
129 | char *end; | |
130 | ||
131 | #define OPTION_IGNORE (300) | |
132 | #define OPTION_AUTOIMP (OPTION_IGNORE + 1) | |
133 | #define OPTION_ERNOTOK (OPTION_AUTOIMP + 1) | |
134 | #define OPTION_EROK (OPTION_ERNOTOK + 1) | |
135 | #define OPTION_EXPORT (OPTION_EROK + 1) | |
136 | #define OPTION_IMPORT (OPTION_EXPORT + 1) | |
137 | #define OPTION_LOADMAP (OPTION_IMPORT + 1) | |
138 | #define OPTION_MAXDATA (OPTION_LOADMAP + 1) | |
139 | #define OPTION_MAXSTACK (OPTION_MAXDATA + 1) | |
140 | #define OPTION_MODTYPE (OPTION_MAXSTACK + 1) | |
141 | #define OPTION_NOAUTOIMP (OPTION_MODTYPE + 1) | |
142 | #define OPTION_NOSTRCMPCT (OPTION_NOAUTOIMP + 1) | |
143 | #define OPTION_PD (OPTION_NOSTRCMPCT + 1) | |
144 | #define OPTION_PT (OPTION_PD + 1) | |
145 | #define OPTION_STRCMPCT (OPTION_PT + 1) | |
146 | #define OPTION_UNIX (OPTION_STRCMPCT + 1) | |
147 | ||
148 | static struct option longopts[] = { | |
149 | {"basis", no_argument, NULL, OPTION_IGNORE}, | |
150 | {"bautoimp", no_argument, NULL, OPTION_AUTOIMP}, | |
151 | {"bcomprld", no_argument, NULL, OPTION_IGNORE}, | |
152 | {"bcrld", no_argument, NULL, OPTION_IGNORE}, | |
153 | {"bcror31", no_argument, NULL, OPTION_IGNORE}, | |
154 | {"bD", required_argument, NULL, OPTION_MAXDATA}, | |
155 | {"bE", required_argument, NULL, OPTION_EXPORT}, | |
156 | {"bernotok", no_argument, NULL, OPTION_ERNOTOK}, | |
157 | {"berok", no_argument, NULL, OPTION_EROK}, | |
158 | {"berrmsg", no_argument, NULL, OPTION_IGNORE}, | |
159 | {"bexport", required_argument, NULL, OPTION_EXPORT}, | |
160 | {"bf", no_argument, NULL, OPTION_ERNOTOK}, | |
161 | {"bgc", no_argument, &gc, 1}, | |
162 | {"bh", required_argument, NULL, OPTION_IGNORE}, | |
163 | {"bhalt", required_argument, NULL, OPTION_IGNORE}, | |
164 | {"bI", required_argument, NULL, OPTION_IMPORT}, | |
165 | {"bimport", required_argument, NULL, OPTION_IMPORT}, | |
166 | {"bl", required_argument, NULL, OPTION_LOADMAP}, | |
167 | {"bloadmap", required_argument, NULL, OPTION_LOADMAP}, | |
168 | {"bmaxdata", required_argument, NULL, OPTION_MAXDATA}, | |
169 | {"bmaxstack", required_argument, NULL, OPTION_MAXSTACK}, | |
170 | {"bM", required_argument, NULL, OPTION_MODTYPE}, | |
171 | {"bmodtype", required_argument, NULL, OPTION_MODTYPE}, | |
172 | {"bnoautoimp", no_argument, NULL, OPTION_NOAUTOIMP}, | |
173 | {"bnodelcsect", no_argument, NULL, OPTION_IGNORE}, | |
174 | {"bnoentry", no_argument, NULL, OPTION_IGNORE}, | |
175 | {"bnogc", no_argument, &gc, 0}, | |
176 | {"bnso", no_argument, NULL, OPTION_NOAUTOIMP}, | |
177 | {"bnostrcmpct", no_argument, NULL, OPTION_NOSTRCMPCT}, | |
178 | {"bnotextro", no_argument, &textro, 0}, | |
179 | {"bnro", no_argument, &textro, 0}, | |
180 | {"bpD", required_argument, NULL, OPTION_PD}, | |
181 | {"bpT", required_argument, NULL, OPTION_PT}, | |
182 | {"bro", no_argument, &textro, 1}, | |
183 | {"bS", required_argument, NULL, OPTION_MAXSTACK}, | |
184 | {"bso", no_argument, NULL, OPTION_AUTOIMP}, | |
185 | {"bstrcmpct", no_argument, NULL, OPTION_STRCMPCT}, | |
186 | {"btextro", no_argument, &textro, 1}, | |
187 | {"static", no_argument, NULL, OPTION_NOAUTOIMP}, | |
188 | {"unix", no_argument, NULL, OPTION_UNIX}, | |
189 | {NULL, no_argument, NULL, 0} | |
190 | }; | |
191 | ||
192 | /* Options supported by the AIX linker which we do not support: -f, | |
193 | -S, -v, -Z, -bbindcmds, -bbinder, -bbindopts, -bcalls, -bcaps, | |
194 | -bcror15, -bdebugopt, -bdbg, -bdelcsect, -bex?, -bfilelist, -bfl, | |
195 | -bgcbypass, -bglink, -binsert, -bi, -bloadmap, -bl, -bmap, -bnl, | |
196 | -bnobind, -bnocomprld, -bnocrld, -bnoerrmsg, -bnoglink, | |
197 | -bnoloadmap, -bnl, -bnoobjreorder, -bnoquiet, -bnoreorder, | |
198 | -bnotypchk, -bnox, -bquiet, -bR, -brename, -breorder, -btypchk, | |
199 | -bx, -bX, -bxref. */ | |
200 | ||
201 | /* If the current option starts with -b, change the first : to an =. | |
202 | The AIX linker uses : to separate the option from the argument; | |
203 | changing it to = lets us treat it as a getopt option. */ | |
204 | indx = optind; | |
205 | if (indx == 0) | |
206 | indx = 1; | |
207 | if (indx < argc && strncmp (argv[indx], "-b", 2) == 0) | |
208 | { | |
209 | char *s; | |
210 | ||
211 | for (s = argv[indx]; *s != '\0'; s++) | |
212 | { | |
213 | if (*s == ':') | |
214 | { | |
215 | *s = '='; | |
216 | break; | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | /* We add s and u so to the short options list so that -s and -u on | |
222 | the command line do not match -static and -unix. */ | |
223 | ||
224 | opterr = 0; | |
225 | optc = getopt_long_only (argc, argv, "-D:H:KT:zsu", longopts, &longind); | |
226 | opterr = prevopterr; | |
227 | ||
228 | switch (optc) | |
229 | { | |
230 | case 's': | |
231 | case 'u': | |
232 | default: | |
233 | optind = prevoptind; | |
234 | return 0; | |
235 | ||
236 | case 0: | |
237 | /* Long option which just sets a flag. */ | |
238 | break; | |
239 | ||
240 | case 'D': | |
241 | val = strtol (optarg, &end, 0); | |
242 | if (*end != '\0') | |
243 | einfo ("%P: warning: ignoring invalid -D number %s\n", optarg); | |
244 | else if (val != -1) | |
245 | lang_section_start (".data", exp_intop (val)); | |
246 | break; | |
247 | ||
248 | case 'H': | |
249 | val = strtoul (optarg, &end, 0); | |
250 | if (*end != '\0' | |
251 | || (val & (val - 1)) != 0) | |
252 | einfo ("%P: warning: ignoring invalid -H number %s\n", optarg); | |
253 | else | |
254 | file_align = val; | |
255 | break; | |
256 | ||
257 | case 'K': | |
258 | case 'z': | |
259 | /* FIXME: This should use the page size for the target system. */ | |
260 | file_align = 4096; | |
261 | break; | |
262 | ||
263 | case 'T': | |
264 | /* On AIX this is the same as GNU ld -Ttext. When we see -T | |
265 | number, we assume the AIX option is intended. Otherwise, we | |
266 | assume the usual GNU ld -T option is intended. We can't just | |
267 | ignore the AIX option, because gcc passes it to the linker. */ | |
268 | val = strtoul (optarg, &end, 0); | |
269 | if (*end != '\0') | |
270 | { | |
271 | optind = prevoptind; | |
272 | return 0; | |
273 | } | |
274 | lang_section_start (".text", exp_intop (val)); | |
275 | break; | |
276 | ||
277 | case OPTION_IGNORE: | |
278 | break; | |
279 | ||
280 | case OPTION_AUTOIMP: | |
281 | link_info.static_link = false; | |
282 | break; | |
283 | ||
284 | case OPTION_ERNOTOK: | |
285 | force_make_executable = false; | |
286 | break; | |
287 | ||
288 | case OPTION_EROK: | |
289 | force_make_executable = true; | |
290 | break; | |
291 | ||
292 | case OPTION_EXPORT: | |
293 | gld${EMULATION_NAME}_read_file (optarg, false); | |
294 | break; | |
295 | ||
296 | case OPTION_IMPORT: | |
297 | { | |
298 | struct filelist *n; | |
299 | struct filelist **flpp; | |
300 | ||
301 | n = (struct filelist *) xmalloc (sizeof (struct filelist)); | |
302 | n->next = NULL; | |
303 | n->name = optarg; | |
304 | flpp = &import_files; | |
305 | while (*flpp != NULL) | |
306 | flpp = &(*flpp)->next; | |
307 | *flpp = n; | |
308 | } | |
309 | break; | |
310 | ||
311 | case OPTION_LOADMAP: | |
312 | config.map_filename = optarg; | |
313 | break; | |
314 | ||
315 | case OPTION_MAXDATA: | |
316 | val = strtoul (optarg, &end, 0); | |
317 | if (*end != '\0') | |
318 | einfo ("%P: warning: ignoring invalid -bmaxdata number %s\n", | |
319 | optarg); | |
320 | else | |
321 | maxdata = val; | |
322 | break; | |
323 | ||
324 | case OPTION_MAXSTACK: | |
325 | val = strtoul (optarg, &end, 0); | |
326 | if (*end != '\0') | |
327 | einfo ("%P: warning: ignoring invalid -bmaxstack number %s\n", | |
328 | optarg); | |
329 | else | |
330 | maxstack = val; | |
331 | break; | |
332 | ||
333 | case OPTION_MODTYPE: | |
334 | if (*optarg == 'S') | |
335 | { | |
336 | link_info.shared = true; | |
337 | ++optarg; | |
338 | } | |
339 | if (*optarg == '\0' || optarg[1] == '\0') | |
340 | einfo ("%P: warning: ignoring invalid module type %s\n", optarg); | |
341 | else | |
342 | modtype = (*optarg << 8) | optarg[1]; | |
343 | break; | |
344 | ||
345 | case OPTION_NOAUTOIMP: | |
346 | link_info.static_link = true; | |
347 | break; | |
348 | ||
349 | case OPTION_NOSTRCMPCT: | |
350 | link_info.traditional_format = true; | |
351 | break; | |
352 | ||
353 | case OPTION_PD: | |
354 | /* This sets the page that the .data section is supposed to | |
355 | start on. The offset within the page should still be the | |
356 | offset within the file, so we need to build an appropriate | |
357 | expression. */ | |
358 | val = strtoul (optarg, &end, 0); | |
359 | if (*end != '\0') | |
360 | einfo ("%P: warning: ignoring invalid -pD number %s\n", optarg); | |
361 | else | |
362 | { | |
363 | etree_type *t; | |
364 | ||
365 | t = exp_binop ('+', | |
366 | exp_intop (val), | |
367 | exp_binop ('&', | |
368 | exp_nameop (NAME, "."), | |
369 | exp_intop (0xfff))); | |
370 | t = exp_binop ('&', | |
371 | exp_binop ('+', t, exp_intop (31)), | |
372 | exp_intop (~ (bfd_vma) 31)); | |
373 | lang_section_start (".data", t); | |
374 | } | |
375 | break; | |
376 | ||
377 | case OPTION_PT: | |
378 | /* This set the page that the .text section is supposed to start | |
379 | on. The offset within the page should still be the offset | |
380 | within the file. */ | |
381 | val = strtoul (optarg, &end, 0); | |
382 | if (*end != '\0') | |
383 | einfo ("%P: warning: ignoring invalid -pT number %s\n", optarg); | |
384 | else | |
385 | { | |
386 | etree_type *t; | |
387 | ||
388 | t = exp_binop ('+', | |
389 | exp_intop (val), | |
390 | exp_nameop (SIZEOF_HEADERS, NULL)); | |
391 | t = exp_binop ('&', | |
392 | exp_binop ('+', t, exp_intop (31)), | |
393 | exp_intop (~ (bfd_vma) 31)); | |
394 | lang_section_start (".text", t); | |
395 | } | |
396 | break; | |
397 | ||
398 | case OPTION_STRCMPCT: | |
399 | link_info.traditional_format = false; | |
400 | break; | |
401 | ||
402 | case OPTION_UNIX: | |
403 | unix_ld = true; | |
404 | break; | |
405 | } | |
406 | ||
407 | return 1; | |
408 | } | |
409 | ||
410 | /* This is called when an input file can not be recognized as a BFD | |
411 | object or an archive. If the file starts with #!, we must treat it | |
412 | as an import file. This is for AIX compatibility. */ | |
413 | ||
414 | static boolean | |
415 | gld${EMULATION_NAME}_unrecognized_file (entry) | |
416 | lang_input_statement_type *entry; | |
417 | { | |
418 | FILE *e; | |
419 | boolean ret; | |
420 | ||
421 | e = fopen (entry->filename, FOPEN_RT); | |
422 | if (e == NULL) | |
423 | return false; | |
424 | ||
425 | ret = false; | |
426 | ||
427 | if (getc (e) == '#' && getc (e) == '!') | |
428 | { | |
429 | struct filelist *n; | |
430 | struct filelist **flpp; | |
431 | ||
432 | n = (struct filelist *) xmalloc (sizeof (struct filelist)); | |
433 | n->next = NULL; | |
434 | n->name = entry->filename; | |
435 | flpp = &import_files; | |
436 | while (*flpp != NULL) | |
437 | flpp = &(*flpp)->next; | |
438 | *flpp = n; | |
439 | ||
440 | ret = true; | |
441 | entry->loaded = true; | |
442 | } | |
443 | ||
444 | fclose (e); | |
445 | ||
446 | return ret; | |
447 | } | |
448 | ||
449 | /* This is called after the input files have been opened. */ | |
450 | ||
451 | static void | |
452 | gld${EMULATION_NAME}_after_open () | |
453 | { | |
454 | boolean r; | |
455 | struct set_info *p; | |
456 | ||
457 | /* Call ldctor_build_sets, after pretending that this is a | |
458 | relocateable link. We do this because AIX requires relocation | |
459 | entries for all references to symbols, even in a final | |
460 | executable. Of course, we only want to do this if we are | |
461 | producing an XCOFF output file. */ | |
462 | r = link_info.relocateable; | |
463 | if (strstr (bfd_get_target (output_bfd), "xcoff") != NULL) | |
464 | link_info.relocateable = true; | |
465 | ldctor_build_sets (); | |
466 | link_info.relocateable = r; | |
467 | ||
468 | /* For each set, record the size, so that the XCOFF backend can | |
469 | output the correct csect length. */ | |
470 | for (p = sets; p != (struct set_info *) NULL; p = p->next) | |
471 | { | |
472 | bfd_size_type size; | |
473 | ||
474 | /* If the symbol is defined, we may have been invoked from | |
475 | collect, and the sets may already have been built, so we do | |
476 | not do anything. */ | |
477 | if (p->h->type == bfd_link_hash_defined | |
478 | || p->h->type == bfd_link_hash_defweak) | |
479 | continue; | |
480 | ||
481 | if (p->reloc != BFD_RELOC_CTOR) | |
482 | { | |
483 | /* Handle this if we need to. */ | |
484 | abort (); | |
485 | } | |
486 | ||
487 | size = (p->count + 2) * 4; | |
488 | if (! bfd_xcoff_link_record_set (output_bfd, &link_info, p->h, size)) | |
489 | einfo ("%F%P: bfd_xcoff_link_record_set failed: %E\n"); | |
490 | } | |
491 | } | |
492 | ||
493 | /* This is called after the sections have been attached to output | |
494 | sections, but before any sizes or addresses have been set. */ | |
495 | ||
496 | static void | |
497 | gld${EMULATION_NAME}_before_allocation () | |
498 | { | |
499 | struct filelist *fl; | |
500 | struct export_symbol_list *el; | |
501 | char *libpath; | |
502 | asection *special_sections[6]; | |
503 | int i; | |
504 | ||
505 | /* Handle the import and export files, if any. */ | |
506 | for (fl = import_files; fl != NULL; fl = fl->next) | |
507 | gld${EMULATION_NAME}_read_file (fl->name, true); | |
508 | for (el = export_symbols; el != NULL; el = el->next) | |
509 | { | |
510 | struct bfd_link_hash_entry *h; | |
511 | ||
512 | h = bfd_link_hash_lookup (link_info.hash, el->name, false, false, false); | |
513 | if (h == NULL) | |
514 | einfo ("%P%F: bfd_link_hash_lookup of export symbol failed: %E\n"); | |
515 | if (! bfd_xcoff_export_symbol (output_bfd, &link_info, h, el->syscall)) | |
516 | einfo ("%P%F: bfd_xcoff_export_symbol failed: %E\n"); | |
517 | } | |
518 | ||
519 | /* Track down all relocations called for by the linker script (these | |
520 | are typically constructor/destructor entries created by | |
521 | CONSTRUCTORS) and let the backend know it will need to create | |
522 | .loader relocs for them. */ | |
523 | lang_for_each_statement (gld${EMULATION_NAME}_find_relocs); | |
524 | ||
525 | /* We need to build LIBPATH from the -L arguments. If any -rpath | |
526 | arguments were used, though, we use -rpath instead, as a GNU | |
527 | extension. */ | |
528 | if (command_line.rpath != NULL) | |
529 | libpath = command_line.rpath; | |
530 | else if (search_head == NULL) | |
531 | libpath = (char *) ""; | |
532 | else | |
533 | { | |
534 | size_t len; | |
535 | search_dirs_type *search; | |
536 | ||
537 | len = strlen (search_head->name); | |
538 | libpath = xmalloc (len + 1); | |
539 | strcpy (libpath, search_head->name); | |
540 | for (search = search_head->next; search != NULL; search = search->next) | |
541 | { | |
542 | size_t nlen; | |
543 | ||
544 | nlen = strlen (search->name); | |
545 | libpath = xrealloc (libpath, len + nlen + 2); | |
546 | libpath[len] = ':'; | |
547 | strcpy (libpath + len + 1, search->name); | |
548 | len += nlen + 1; | |
549 | } | |
550 | } | |
551 | ||
552 | /* Let the XCOFF backend set up the .loader section. */ | |
553 | if (! bfd_xcoff_size_dynamic_sections (output_bfd, &link_info, libpath, | |
554 | entry_symbol, file_align, | |
555 | maxstack, maxdata, | |
556 | gc && ! unix_ld ? true : false, | |
557 | modtype, | |
558 | textro ? true : false, | |
559 | unix_ld, | |
560 | special_sections)) | |
561 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
562 | ||
563 | /* Look through the special sections, and put them in the right | |
564 | place in the link ordering. This is especially magic. */ | |
565 | for (i = 0; i < 6; i++) | |
566 | { | |
567 | asection *sec; | |
568 | lang_output_section_statement_type *os; | |
569 | lang_statement_union_type **pls; | |
570 | lang_input_section_type *is; | |
571 | const char *oname; | |
572 | boolean start; | |
573 | ||
574 | sec = special_sections[i]; | |
575 | if (sec == NULL) | |
576 | continue; | |
577 | ||
578 | /* Remove this section from the list of the output section. | |
579 | This assumes we know what the script looks like. */ | |
580 | is = NULL; | |
581 | os = lang_output_section_find (sec->output_section->name); | |
582 | if (os == NULL) | |
583 | einfo ("%P%F: can't find output section %s\n", | |
584 | sec->output_section->name); | |
585 | for (pls = &os->children.head; *pls != NULL; pls = &(*pls)->next) | |
586 | { | |
587 | if ((*pls)->header.type == lang_input_section_enum | |
588 | && (*pls)->input_section.section == sec) | |
589 | { | |
590 | is = (lang_input_section_type *) *pls; | |
591 | *pls = (*pls)->next; | |
592 | break; | |
593 | } | |
594 | if ((*pls)->header.type == lang_wild_statement_enum) | |
595 | { | |
596 | lang_statement_union_type **pwls; | |
597 | ||
598 | for (pwls = &(*pls)->wild_statement.children.head; | |
599 | *pwls != NULL; | |
600 | pwls = &(*pwls)->next) | |
601 | { | |
602 | if ((*pwls)->header.type == lang_input_section_enum | |
603 | && (*pwls)->input_section.section == sec) | |
604 | { | |
605 | is = (lang_input_section_type *) *pwls; | |
606 | *pwls = (*pwls)->next; | |
607 | break; | |
608 | } | |
609 | } | |
610 | if (is != NULL) | |
611 | break; | |
612 | } | |
613 | } | |
614 | ||
615 | if (is == NULL) | |
616 | einfo ("%P%F: can't find %s in output section\n", | |
617 | bfd_get_section_name (sec->owner, sec)); | |
618 | ||
619 | /* Now figure out where the section should go. */ | |
620 | switch (i) | |
621 | { | |
622 | default: /* to avoid warnings */ | |
623 | case 0: | |
624 | /* _text */ | |
625 | oname = ".text"; | |
626 | start = true; | |
627 | break; | |
628 | case 1: | |
629 | /* _etext */ | |
630 | oname = ".text"; | |
631 | start = false; | |
632 | break; | |
633 | case 2: | |
634 | /* _data */ | |
635 | oname = ".data"; | |
636 | start = true; | |
637 | break; | |
638 | case 3: | |
639 | /* _edata */ | |
640 | oname = ".data"; | |
641 | start = false; | |
642 | break; | |
643 | case 4: | |
644 | case 5: | |
645 | /* _end and end */ | |
646 | oname = ".bss"; | |
647 | start = false; | |
648 | break; | |
649 | } | |
650 | ||
651 | os = lang_output_section_find (oname); | |
652 | ||
653 | if (start) | |
654 | { | |
655 | is->header.next = os->children.head; | |
656 | os->children.head = (lang_statement_union_type *) is; | |
657 | } | |
658 | else | |
659 | { | |
660 | is->header.next = NULL; | |
661 | lang_statement_append (&os->children, | |
662 | (lang_statement_union_type *) is, | |
663 | &is->header.next); | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
668 | /* Read an import or export file. For an import file, this is called | |
669 | by the before_allocation emulation routine. For an export file, | |
670 | this is called by the parse_args emulation routine. */ | |
671 | ||
672 | static void | |
673 | gld${EMULATION_NAME}_read_file (filename, import) | |
674 | const char *filename; | |
675 | boolean import; | |
676 | { | |
677 | struct obstack *o; | |
678 | FILE *f; | |
679 | int lineno; | |
680 | int c; | |
681 | boolean keep; | |
682 | const char *imppath; | |
683 | const char *impfile; | |
684 | const char *impmember; | |
685 | ||
686 | o = (struct obstack *) xmalloc (sizeof (struct obstack)); | |
687 | obstack_specify_allocation (o, 0, 0, xmalloc, gld${EMULATION_NAME}_free); | |
688 | ||
689 | f = fopen (filename, FOPEN_RT); | |
690 | if (f == NULL) | |
691 | { | |
692 | bfd_set_error (bfd_error_system_call); | |
693 | einfo ("%F%s: %E\n", filename); | |
694 | } | |
695 | ||
696 | keep = false; | |
697 | ||
698 | imppath = NULL; | |
699 | impfile = NULL; | |
700 | impmember = NULL; | |
701 | ||
702 | lineno = 0; | |
703 | while ((c = getc (f)) != EOF) | |
704 | { | |
705 | char *s; | |
706 | char *symname; | |
707 | boolean syscall; | |
708 | bfd_vma address; | |
709 | struct bfd_link_hash_entry *h; | |
710 | ||
711 | if (c != '\n') | |
712 | { | |
713 | obstack_1grow (o, c); | |
714 | continue; | |
715 | } | |
716 | ||
717 | obstack_1grow (o, '\0'); | |
718 | ++lineno; | |
719 | ||
720 | s = (char *) obstack_base (o); | |
721 | while (isspace ((unsigned char) *s)) | |
722 | ++s; | |
723 | if (*s == '\0' | |
724 | || *s == '*' | |
725 | || (*s == '#' && s[1] == ' ') | |
726 | || (! import && *s == '#' && s[1] == '!')) | |
727 | { | |
728 | obstack_free (o, obstack_base (o)); | |
729 | continue; | |
730 | } | |
731 | ||
732 | if (*s == '#' && s[1] == '!') | |
733 | { | |
734 | s += 2; | |
735 | while (isspace ((unsigned char) *s)) | |
736 | ++s; | |
737 | if (*s == '\0') | |
738 | { | |
739 | imppath = NULL; | |
740 | impfile = NULL; | |
741 | impmember = NULL; | |
742 | obstack_free (o, obstack_base (o)); | |
743 | } | |
744 | else if (*s == '(') | |
745 | einfo ("%F%s%d: #! ([member]) is not supported in import files\n", | |
746 | filename, lineno); | |
747 | else | |
748 | { | |
749 | char cs; | |
750 | char *file; | |
751 | ||
752 | (void) obstack_finish (o); | |
753 | keep = true; | |
754 | imppath = s; | |
755 | file = NULL; | |
756 | while (! isspace ((unsigned char) *s) && *s != '(' && *s != '\0') | |
757 | { | |
758 | if (*s == '/') | |
759 | file = s + 1; | |
760 | ++s; | |
761 | } | |
762 | if (file != NULL) | |
763 | { | |
764 | file[-1] = '\0'; | |
765 | impfile = file; | |
766 | if (imppath == file - 1) | |
767 | imppath = "/"; | |
768 | } | |
769 | else | |
770 | { | |
771 | impfile = imppath; | |
772 | imppath = ""; | |
773 | } | |
774 | cs = *s; | |
775 | *s = '\0'; | |
776 | while (isspace ((unsigned char) cs)) | |
777 | { | |
778 | ++s; | |
779 | cs = *s; | |
780 | } | |
781 | if (cs != '(') | |
782 | { | |
783 | impmember = ""; | |
784 | if (cs != '\0') | |
785 | einfo ("%s:%d: warning: syntax error in import file\n", | |
786 | filename, lineno); | |
787 | } | |
788 | else | |
789 | { | |
790 | ++s; | |
791 | impmember = s; | |
792 | while (*s != ')' && *s != '\0') | |
793 | ++s; | |
794 | if (*s == ')') | |
795 | *s = '\0'; | |
796 | else | |
797 | einfo ("%s:%d: warning: syntax error in import file\n", | |
798 | filename, lineno); | |
799 | } | |
800 | } | |
801 | ||
802 | continue; | |
803 | } | |
804 | ||
805 | /* This is a symbol to be imported or exported. */ | |
806 | symname = s; | |
807 | syscall = false; | |
808 | address = (bfd_vma) -1; | |
809 | ||
810 | while (! isspace ((unsigned char) *s) && *s != '\0') | |
811 | ++s; | |
812 | if (*s != '\0') | |
813 | { | |
814 | char *se; | |
815 | ||
816 | *s++ = '\0'; | |
817 | ||
818 | while (isspace ((unsigned char) *s)) | |
819 | ++s; | |
820 | ||
821 | se = s; | |
822 | while (! isspace ((unsigned char) *se) && *se != '\0') | |
823 | ++se; | |
824 | if (*se != '\0') | |
825 | { | |
826 | *se++ = '\0'; | |
827 | while (isspace ((unsigned char) *se)) | |
828 | ++se; | |
829 | if (*se != '\0') | |
830 | einfo ("%s%d: warning: syntax error in import/export file\n", | |
831 | filename, lineno); | |
832 | } | |
833 | ||
834 | if (s == se) | |
835 | { | |
836 | /* There was no address after all. */ | |
837 | } | |
838 | else if (strcasecmp (s, "svc") == 0 | |
839 | || strcasecmp (s, "syscall") == 0) | |
840 | syscall = true; | |
841 | else | |
842 | { | |
843 | char *end; | |
844 | ||
845 | address = strtoul (s, &end, 0); | |
846 | if (*end != '\0') | |
847 | einfo ("%s:%d: warning: syntax error in import/export file\n", | |
848 | filename, lineno); | |
849 | } | |
850 | } | |
851 | ||
852 | if (! import) | |
853 | { | |
854 | struct export_symbol_list *n; | |
855 | ||
856 | ldlang_add_undef (symname); | |
857 | n = ((struct export_symbol_list *) | |
858 | xmalloc (sizeof (struct export_symbol_list))); | |
859 | n->next = export_symbols; | |
860 | n->name = buystring (symname); | |
861 | n->syscall = syscall; | |
862 | export_symbols = n; | |
863 | } | |
864 | else | |
865 | { | |
866 | h = bfd_link_hash_lookup (link_info.hash, symname, false, false, | |
867 | true); | |
868 | if (h == NULL || h->type == bfd_link_hash_new) | |
869 | { | |
870 | /* We can just ignore attempts to import an unreferenced | |
871 | symbol. */ | |
872 | } | |
873 | else | |
874 | { | |
875 | if (! bfd_xcoff_import_symbol (output_bfd, &link_info, h, | |
876 | address, imppath, impfile, | |
877 | impmember)) | |
878 | einfo ("%X%s:%d: failed to import symbol %s: %E\n", | |
879 | filename, lineno, symname); | |
880 | } | |
881 | } | |
882 | ||
883 | obstack_free (o, obstack_base (o)); | |
884 | } | |
885 | ||
886 | if (obstack_object_size (o) > 0) | |
887 | { | |
888 | einfo ("%s:%d: warning: ignoring unterminated last line\n", | |
889 | filename, lineno); | |
890 | obstack_free (o, obstack_base (o)); | |
891 | } | |
892 | ||
893 | if (! keep) | |
894 | { | |
895 | obstack_free (o, NULL); | |
896 | free (o); | |
897 | } | |
898 | } | |
899 | ||
900 | /* This routine saves us from worrying about declaring free. */ | |
901 | ||
902 | static void | |
903 | gld${EMULATION_NAME}_free (p) | |
904 | PTR p; | |
905 | { | |
906 | free (p); | |
907 | } | |
908 | ||
909 | /* This is called by the before_allocation routine via | |
910 | lang_for_each_statement. It looks for relocations and assignments | |
911 | to symbols. */ | |
912 | ||
913 | static void | |
914 | gld${EMULATION_NAME}_find_relocs (s) | |
915 | lang_statement_union_type *s; | |
916 | { | |
917 | if (s->header.type == lang_reloc_statement_enum) | |
918 | { | |
919 | lang_reloc_statement_type *rs; | |
920 | ||
921 | rs = &s->reloc_statement; | |
922 | if (rs->name == NULL) | |
923 | einfo ("%F%P: only relocations against symbols are permitted\n"); | |
924 | if (! bfd_xcoff_link_count_reloc (output_bfd, &link_info, rs->name)) | |
925 | einfo ("%F%P: bfd_xcoff_link_count_reloc failed: %E\n"); | |
926 | } | |
927 | ||
928 | if (s->header.type == lang_assignment_statement_enum) | |
929 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
930 | } | |
931 | ||
932 | /* Look through an expression for an assignment statement. */ | |
933 | ||
934 | static void | |
935 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
936 | etree_type *exp; | |
937 | { | |
938 | struct bfd_link_hash_entry *h; | |
939 | ||
940 | switch (exp->type.node_class) | |
941 | { | |
942 | case etree_provide: | |
943 | h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, | |
944 | false, false, false); | |
945 | if (h == NULL) | |
946 | break; | |
947 | /* Fall through. */ | |
948 | case etree_assign: | |
949 | if (strcmp (exp->assign.dst, ".") != 0) | |
950 | { | |
951 | if (! bfd_xcoff_record_link_assignment (output_bfd, &link_info, | |
952 | exp->assign.dst)) | |
953 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
954 | exp->assign.dst); | |
955 | } | |
956 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
957 | break; | |
958 | ||
959 | case etree_binary: | |
960 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
961 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
962 | break; | |
963 | ||
964 | case etree_trinary: | |
965 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
966 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
967 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
968 | break; | |
969 | ||
970 | case etree_unary: | |
971 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
972 | break; | |
973 | ||
974 | default: | |
975 | break; | |
976 | } | |
977 | } | |
978 | ||
979 | static char * | |
980 | gld${EMULATION_NAME}_get_script(isfile) | |
981 | int *isfile; | |
982 | EOF | |
983 | ||
984 | if test -n "$COMPILE_IN" | |
985 | then | |
986 | # Scripts compiled in. | |
987 | ||
988 | # sed commands to quote an ld script as a C string. | |
597e2591 | 989 | sc="-f stringify.sed" |
252b5132 RH |
990 | |
991 | cat >>e${EMULATION_NAME}.c <<EOF | |
992 | { | |
993 | *isfile = 0; | |
994 | ||
995 | if (link_info.relocateable == true && config.build_constructors == true) | |
996 | return | |
997 | EOF | |
998 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
999 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
1000 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
1001 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
1002 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
1003 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
1004 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
1005 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
1006 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1007 | echo '; }' >> e${EMULATION_NAME}.c | |
1008 | ||
1009 | else | |
1010 | # Scripts read from the filesystem. | |
1011 | ||
1012 | cat >>e${EMULATION_NAME}.c <<EOF | |
1013 | { | |
1014 | *isfile = 1; | |
1015 | ||
1016 | if (link_info.relocateable == true && config.build_constructors == true) | |
1017 | return "ldscripts/${EMULATION_NAME}.xu"; | |
1018 | else if (link_info.relocateable == true) | |
1019 | return "ldscripts/${EMULATION_NAME}.xr"; | |
1020 | else if (!config.text_read_only) | |
1021 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1022 | else if (!config.magic_demand_paged) | |
1023 | return "ldscripts/${EMULATION_NAME}.xn"; | |
1024 | else | |
1025 | return "ldscripts/${EMULATION_NAME}.x"; | |
1026 | } | |
1027 | EOF | |
1028 | ||
1029 | fi | |
1030 | ||
1031 | cat >>e${EMULATION_NAME}.c <<EOF | |
1032 | ||
1033 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
1034 | { | |
1035 | gld${EMULATION_NAME}_before_parse, | |
1036 | syslib_default, | |
1037 | hll_default, | |
1038 | after_parse_default, | |
1039 | gld${EMULATION_NAME}_after_open, | |
1040 | after_allocation_default, | |
1041 | set_output_arch_default, | |
1042 | ldemul_default_target, | |
1043 | gld${EMULATION_NAME}_before_allocation, | |
1044 | gld${EMULATION_NAME}_get_script, | |
1045 | "${EMULATION_NAME}", | |
1046 | "${OUTPUT_FORMAT}", | |
1047 | 0, /* finish */ | |
1048 | 0, /* create_output_section_statements */ | |
1049 | 0, /* open_dynamic_archive */ | |
1050 | 0, /* place_orphan */ | |
1051 | 0, /* set_symbols */ | |
1052 | gld${EMULATION_NAME}_parse_args, | |
40d109bf AM |
1053 | gld${EMULATION_NAME}_unrecognized_file, |
1054 | NULL /* find_potential_libraries */ | |
252b5132 RH |
1055 | }; |
1056 | EOF |