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252b5132 RH |
1 | /* vms-misc.c -- Miscellaneous functions for VAX (openVMS/VAX) and |
2 | EVAX (openVMS/Alpha) files. | |
e049a0de | 3 | Copyright 1996, 1997, 1998, 1999 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | Written by Klaus K"ampf (kkaempf@rmi.de) | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
252b5132 RH |
21 | #if __STDC__ |
22 | #include <stdarg.h> | |
23 | #endif | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "bfdlink.h" | |
28 | #include "libbfd.h" | |
29 | ||
30 | #include "vms.h" | |
31 | ||
32 | /*-----------------------------------------------------------------------------*/ | |
33 | #if VMS_DEBUG | |
34 | /* debug functions */ | |
35 | ||
36 | /* debug function for all vms extensions | |
37 | evaluates environment variable VMS_DEBUG for a | |
38 | numerical value on the first call | |
39 | all error levels below this value are printed | |
558e161f | 40 | |
252b5132 RH |
41 | levels: |
42 | 1 toplevel bfd calls (functions from the bfd vector) | |
43 | 2 functions called by bfd calls | |
44 | ... | |
45 | 9 almost everything | |
46 | ||
47 | level is also identation level. Indentation is performed | |
48 | if level > 0 | |
49 | */ | |
50 | ||
51 | #if __STDC__ | |
52 | void | |
53 | _bfd_vms_debug (int level, char *format, ...) | |
54 | { | |
55 | static int min_level = -1; | |
56 | static FILE *output = NULL; | |
57 | char *eptr; | |
58 | va_list args; | |
59 | int abslvl = (level > 0)?level:-level; | |
60 | ||
61 | if (min_level == -1) | |
62 | { | |
63 | if ((eptr = getenv("VMS_DEBUG")) != NULL) | |
64 | { | |
65 | min_level = atoi(eptr); | |
66 | output = stderr; | |
67 | } | |
68 | else | |
69 | min_level = 0; | |
70 | } | |
71 | if (output == NULL) | |
72 | return; | |
73 | if (abslvl > min_level) | |
74 | return; | |
75 | ||
558e161f KH |
76 | while (--level>0) |
77 | fprintf (output, " "); | |
252b5132 | 78 | va_start(args, format); |
558e161f | 79 | vfprintf (output, format, args); |
252b5132 RH |
80 | fflush(output); |
81 | va_end(args); | |
82 | ||
83 | return; | |
84 | } | |
85 | ||
86 | #else /* not __STDC__ */ | |
87 | ||
88 | void | |
89 | _bfd_vms_debug (level, format, a1, a2, a3, a4, a5, a6) | |
90 | int level; | |
91 | char *format; | |
92 | long a1; long a2; long a3; | |
93 | long a4; long a5; long a6; | |
94 | { | |
95 | static int min_level = -1; | |
96 | static FILE *output = NULL; | |
97 | char *eptr; | |
98 | ||
99 | if (min_level == -1) | |
100 | { | |
101 | if ((eptr = getenv("VMS_DEBUG")) != NULL) | |
102 | { | |
103 | min_level = atoi(eptr); | |
104 | output = stderr; | |
105 | } | |
106 | else | |
107 | min_level = 0; | |
108 | } | |
109 | if (output == NULL) | |
110 | return; | |
111 | if (level > min_level) | |
112 | return; | |
113 | ||
558e161f KH |
114 | while (--level>0) |
115 | fprintf (output, " "); | |
116 | fprintf (output, format, a1, a2, a3, a4, a5, a6); | |
252b5132 RH |
117 | fflush(output); |
118 | ||
119 | return; | |
120 | } | |
121 | #endif /* __STDC__ */ | |
122 | ||
252b5132 RH |
123 | /* a debug function |
124 | hex dump 'size' bytes starting at 'ptr' */ | |
125 | ||
126 | void | |
127 | _bfd_hexdump (level, ptr, size, offset) | |
128 | int level; | |
129 | unsigned char *ptr; | |
130 | int size; | |
131 | int offset; | |
132 | { | |
133 | unsigned char *lptr = ptr; | |
134 | int count = 0; | |
135 | long start = offset; | |
136 | ||
137 | while (size-- > 0) | |
138 | { | |
139 | if ((count%16) == 0) | |
140 | vms_debug (level, "%08lx:", start); | |
141 | vms_debug (-level, " %02x", *ptr++); | |
142 | count++; | |
143 | start++; | |
144 | if (size == 0) | |
145 | { | |
146 | while ((count%16) != 0) | |
147 | { | |
148 | vms_debug (-level, " "); | |
149 | count++; | |
150 | } | |
151 | } | |
152 | if ((count%16) == 0) | |
153 | { | |
154 | vms_debug (-level, " "); | |
155 | while (lptr < ptr) | |
156 | { | |
157 | vms_debug (-level, "%c", (*lptr < 32)?'.':*lptr); | |
158 | lptr++; | |
159 | } | |
160 | vms_debug (-level, "\n"); | |
161 | } | |
162 | } | |
163 | if ((count%16) != 0) | |
164 | vms_debug (-level, "\n"); | |
165 | ||
166 | return; | |
167 | } | |
168 | #endif | |
169 | ||
170 | \f | |
171 | /* hash functions | |
172 | ||
173 | These are needed when reading an object file. */ | |
174 | ||
175 | /* allocate new vms_hash_entry | |
176 | keep the symbol name and a pointer to the bfd symbol in the table */ | |
177 | ||
178 | struct bfd_hash_entry * | |
179 | _bfd_vms_hash_newfunc (entry, table, string) | |
180 | struct bfd_hash_entry *entry; | |
181 | struct bfd_hash_table *table; | |
182 | const char *string; | |
183 | { | |
184 | vms_symbol_entry *ret; | |
185 | ||
186 | #if VMS_DEBUG | |
187 | vms_debug (5, "_bfd_vms_hash_newfunc(%p, %p, %s)\n", entry, table, string); | |
188 | #endif | |
189 | ||
190 | if (entry == (struct bfd_hash_entry *)NULL) | |
191 | { | |
192 | ret = (vms_symbol_entry *) | |
193 | bfd_hash_allocate (table, sizeof (vms_symbol_entry)); | |
194 | if (ret == (vms_symbol_entry *) NULL) | |
195 | { | |
196 | bfd_set_error (bfd_error_no_memory); | |
197 | return (struct bfd_hash_entry *)NULL; | |
198 | } | |
015985c9 | 199 | entry = (struct bfd_hash_entry *) ret; |
252b5132 RH |
200 | } |
201 | ||
202 | /* Call the allocation method of the base class. */ | |
203 | ||
015985c9 | 204 | ret = (vms_symbol_entry *) bfd_hash_newfunc (entry, table, string); |
252b5132 RH |
205 | #if VMS_DEBUG |
206 | vms_debug (6, "_bfd_vms_hash_newfunc ret %p\n", ret); | |
207 | #endif | |
208 | ||
209 | ret->symbol = (asymbol *)NULL; | |
210 | ||
211 | return (struct bfd_hash_entry *)ret; | |
212 | } | |
213 | ||
214 | \f | |
215 | /* object file input functions */ | |
216 | ||
217 | /* Return type and length from record header (buf) on Alpha. */ | |
218 | ||
219 | void | |
220 | _bfd_vms_get_header_values (abfd, buf, type, length) | |
5f771d47 | 221 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
222 | unsigned char *buf; |
223 | int *type; | |
224 | int *length; | |
225 | { | |
226 | if (type != 0) | |
227 | *type = bfd_getl16 (buf); | |
228 | buf += 2; | |
229 | if (length != 0) | |
230 | *length = bfd_getl16 (buf); | |
231 | ||
232 | #if VMS_DEBUG | |
233 | vms_debug (10, "_bfd_vms_get_header_values type %x, length %x\n", (type?*type:0), (length?*length:0)); | |
234 | #endif | |
235 | ||
252b5132 RH |
236 | return; |
237 | } | |
238 | ||
252b5132 RH |
239 | /* Get next record from object file to vms_buf |
240 | set PRIV(buf_size) and return it | |
558e161f | 241 | |
252b5132 | 242 | this is a little tricky since it should be portable. |
558e161f | 243 | |
252b5132 RH |
244 | the openVMS object file has 'variable length' which means that |
245 | read() returns data in chunks of (hopefully) correct and expected | |
246 | size. The linker (and other tools on vms) depend on that. Unix doesn't | |
247 | know about 'formatted' files, so reading and writing such an object | |
248 | file in a unix environment is not trivial. | |
558e161f | 249 | |
252b5132 RH |
250 | With the tool 'file' (available on all vms ftp sites), one |
251 | can view and change the attributes of a file. Changing from | |
252 | 'variable length' to 'fixed length, 512 bytes' reveals the | |
253 | record length at the first 2 bytes of every record. The same | |
254 | happens during the transfer of object files from vms to unix, | |
255 | at least with ucx, dec's implementation of tcp/ip. | |
558e161f | 256 | |
252b5132 | 257 | The vms format repeats the length at bytes 2 & 3 of every record. |
558e161f | 258 | |
252b5132 RH |
259 | On the first call (file_format == FF_UNKNOWN) we check if |
260 | the first and the third byte pair (!) of the record match. | |
261 | If they do it's an object file in an unix environment or with | |
262 | wrong attributes (FF_FOREIGN), else we should be in a vms | |
263 | environment where read() returns the record size (FF_NATIVE). | |
558e161f | 264 | |
252b5132 RH |
265 | reading is always done in 2 steps. |
266 | first just the record header is read and the length extracted | |
267 | by get_header_values | |
268 | then the read buffer is adjusted and the remaining bytes are | |
269 | read in. | |
558e161f | 270 | |
252b5132 RH |
271 | all file i/o is always done on even file positions */ |
272 | ||
273 | int | |
274 | _bfd_vms_get_record (abfd) | |
275 | bfd *abfd; | |
276 | { | |
277 | int test_len, test_start, remaining; | |
278 | unsigned char *vms_buf; | |
279 | ||
280 | #if VMS_DEBUG | |
281 | vms_debug (8, "_bfd_vms_get_record\n"); | |
282 | #endif | |
283 | ||
284 | /* minimum is 6 bytes on Alpha | |
285 | (2 bytes length, 2 bytes record id, 2 bytes length repeated) | |
286 | ||
287 | on VAX there's no length information in the record | |
288 | so start with OBJ_S_C_MAXRECSIZ */ | |
289 | ||
290 | if (PRIV(buf_size) == 0) | |
291 | { | |
292 | if (PRIV(is_vax)) | |
293 | { | |
294 | PRIV(vms_buf) = (unsigned char *) malloc (OBJ_S_C_MAXRECSIZ); | |
295 | PRIV(buf_size) = OBJ_S_C_MAXRECSIZ; | |
296 | PRIV(file_format) = FF_VAX; | |
297 | } | |
298 | else | |
299 | PRIV(vms_buf) = (unsigned char *) malloc (6); | |
300 | } | |
301 | ||
302 | vms_buf = PRIV(vms_buf); | |
303 | ||
304 | if (vms_buf == 0) | |
305 | { | |
306 | bfd_set_error (bfd_error_no_memory); | |
307 | return -1; | |
308 | } | |
309 | ||
310 | switch (PRIV(file_format)) | |
311 | { | |
02b89dce NC |
312 | case FF_UNKNOWN: |
313 | case FF_FOREIGN: | |
314 | test_len = 6; /* probe 6 bytes */ | |
315 | test_start = 2; /* where the record starts */ | |
252b5132 | 316 | break; |
558e161f | 317 | |
02b89dce NC |
318 | case FF_NATIVE: |
319 | test_len = 4; | |
320 | test_start = 0; | |
252b5132 | 321 | break; |
558e161f | 322 | |
02b89dce NC |
323 | default: |
324 | case FF_VAX: | |
325 | test_len = 0; | |
326 | test_start = 0; | |
252b5132 | 327 | break; |
02b89dce | 328 | } |
252b5132 RH |
329 | |
330 | /* skip odd alignment byte */ | |
331 | ||
332 | if (bfd_tell (abfd) & 1) | |
333 | { | |
334 | if (bfd_read (PRIV(vms_buf), 1, 1, abfd) != 1) | |
335 | { | |
336 | bfd_set_error (bfd_error_file_truncated); | |
337 | return 0; | |
338 | } | |
339 | } | |
340 | ||
341 | /* read the record header on Alpha. */ | |
342 | ||
343 | if ((test_len != 0) | |
5f771d47 ILT |
344 | && (bfd_read (PRIV(vms_buf), 1, test_len, abfd) |
345 | != (bfd_size_type) test_len)) | |
252b5132 RH |
346 | { |
347 | bfd_set_error (bfd_error_file_truncated); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | /* check file format on first call */ | |
352 | ||
353 | if (PRIV(file_format) == FF_UNKNOWN) | |
354 | { /* record length repeats ? */ | |
355 | if ( (vms_buf[0] == vms_buf[4]) | |
356 | && (vms_buf[1] == vms_buf[5])) | |
357 | { | |
358 | PRIV(file_format) = FF_FOREIGN; /* Y: foreign environment */ | |
359 | test_start = 2; | |
360 | } | |
361 | else | |
362 | { | |
363 | PRIV(file_format) = FF_NATIVE; /* N: native environment */ | |
364 | test_start = 0; | |
365 | } | |
366 | } | |
367 | ||
368 | if (PRIV(is_vax)) | |
369 | { | |
370 | PRIV(rec_length) = bfd_read (vms_buf, 1, PRIV(buf_size), abfd); | |
371 | if (PRIV(rec_length) <= 0) | |
372 | { | |
373 | bfd_set_error (bfd_error_file_truncated); | |
374 | return 0; | |
375 | } | |
376 | PRIV(vms_rec) = vms_buf; | |
377 | } | |
378 | else /* Alpha */ | |
379 | { | |
380 | /* extract vms record length */ | |
381 | ||
382 | _bfd_vms_get_header_values (abfd, vms_buf+test_start, NULL, | |
383 | &PRIV(rec_length)); | |
384 | ||
385 | if (PRIV(rec_length) <= 0) | |
386 | { | |
387 | bfd_set_error (bfd_error_file_truncated); | |
388 | return 0; | |
389 | } | |
390 | ||
391 | /* that's what the linker manual says */ | |
392 | ||
393 | if (PRIV(rec_length) > EOBJ_S_C_MAXRECSIZ) | |
394 | { | |
395 | bfd_set_error (bfd_error_file_truncated); | |
396 | return 0; | |
397 | } | |
398 | ||
399 | /* adjust the buffer */ | |
400 | ||
401 | if (PRIV(rec_length) > PRIV(buf_size)) | |
402 | { | |
403 | PRIV(vms_buf) = (unsigned char *) realloc (vms_buf, PRIV(rec_length)); | |
404 | vms_buf = PRIV(vms_buf); | |
405 | if (vms_buf == 0) | |
406 | { | |
407 | bfd_set_error (bfd_error_no_memory); | |
408 | return -1; | |
409 | } | |
410 | PRIV(buf_size) = PRIV(rec_length); | |
411 | } | |
412 | ||
413 | /* read the remaining record */ | |
414 | ||
415 | remaining = PRIV(rec_length) - test_len + test_start; | |
416 | ||
417 | #if VMS_DEBUG | |
418 | vms_debug (10, "bfd_read remaining %d\n", remaining); | |
419 | #endif | |
5f771d47 ILT |
420 | if (bfd_read (vms_buf + test_len, 1, remaining, abfd) != |
421 | (bfd_size_type) remaining) | |
252b5132 RH |
422 | { |
423 | bfd_set_error (bfd_error_file_truncated); | |
424 | return 0; | |
425 | } | |
426 | PRIV(vms_rec) = vms_buf + test_start; | |
427 | } | |
428 | ||
429 | #if VMS_DEBUG | |
430 | vms_debug (11, "bfd_read rec_length %d\n", PRIV(rec_length)); | |
431 | #endif | |
432 | ||
433 | return PRIV(rec_length); | |
434 | } | |
435 | ||
252b5132 RH |
436 | /* get next vms record from file |
437 | update vms_rec and rec_length to new (remaining) values */ | |
438 | ||
439 | int | |
440 | _bfd_vms_next_record (abfd) | |
441 | bfd *abfd; | |
442 | { | |
443 | #if VMS_DEBUG | |
444 | vms_debug (8, "_bfd_vms_next_record (len %d, size %d)\n", | |
445 | PRIV(rec_length), PRIV(rec_size)); | |
446 | #endif | |
447 | ||
448 | if (PRIV(rec_length) > 0) | |
449 | { | |
450 | PRIV(vms_rec) += PRIV(rec_size); | |
451 | } | |
452 | else | |
453 | { | |
454 | if (_bfd_vms_get_record (abfd) <= 0) | |
455 | return -1; | |
456 | } | |
457 | ||
0007625f L |
458 | if (!PRIV(vms_rec) || !PRIV(vms_buf) |
459 | || PRIV(vms_rec) >= (PRIV(vms_buf) + PRIV(buf_size))) | |
63e39178 L |
460 | return -1; |
461 | ||
252b5132 RH |
462 | if (PRIV(is_vax)) |
463 | { | |
464 | PRIV(rec_type) = *(PRIV(vms_rec)); | |
465 | PRIV(rec_size) = PRIV(rec_length); | |
466 | } | |
467 | else | |
468 | { | |
469 | _bfd_vms_get_header_values (abfd, PRIV(vms_rec), &PRIV(rec_type), | |
470 | &PRIV(rec_size)); | |
471 | } | |
472 | PRIV(rec_length) -= PRIV(rec_size); | |
473 | ||
474 | #if VMS_DEBUG | |
475 | vms_debug (8, "_bfd_vms_next_record: rec %p, size %d, length %d, type %d\n", | |
476 | PRIV(vms_rec), PRIV(rec_size), PRIV(rec_length), | |
477 | PRIV(rec_type)); | |
478 | #endif | |
479 | ||
480 | return PRIV(rec_type); | |
481 | } | |
482 | ||
252b5132 RH |
483 | \f |
484 | /* Copy sized string (string with fixed length) to new allocated area | |
485 | size is string length (size of record) */ | |
486 | ||
487 | char * | |
488 | _bfd_vms_save_sized_string (str, size) | |
489 | unsigned char *str; | |
490 | int size; | |
491 | { | |
492 | char *newstr = bfd_malloc (size + 1); | |
493 | ||
494 | if (newstr == NULL) | |
495 | return 0; | |
496 | strncpy (newstr, (char *)str, size); | |
497 | newstr[size] = 0; | |
498 | ||
499 | return newstr; | |
500 | } | |
501 | ||
502 | /* Copy counted string (string with length at first byte) to new allocated area | |
503 | ptr points to length byte on entry */ | |
504 | ||
505 | char * | |
506 | _bfd_vms_save_counted_string (ptr) | |
507 | unsigned char *ptr; | |
508 | { | |
509 | int len = *ptr++; | |
510 | ||
511 | return _bfd_vms_save_sized_string (ptr, len); | |
512 | } | |
513 | ||
514 | \f | |
515 | /* stack routines for vms ETIR commands */ | |
516 | ||
517 | /* Push value and section index */ | |
518 | ||
519 | void | |
520 | _bfd_vms_push (abfd, val, psect) | |
521 | bfd *abfd; | |
522 | uquad val; | |
523 | int psect; | |
524 | { | |
525 | static int last_psect; | |
526 | ||
527 | #if VMS_DEBUG | |
528 | vms_debug (4, "<push %016lx(%d) at %d>\n", val, psect, PRIV(stackptr)); | |
529 | #endif | |
530 | ||
531 | if (psect >= 0) | |
532 | last_psect = psect; | |
533 | ||
534 | PRIV(stack[PRIV(stackptr)]).value = val; | |
535 | PRIV(stack[PRIV(stackptr)]).psect = last_psect; | |
536 | PRIV(stackptr)++; | |
537 | if (PRIV(stackptr) >= STACKSIZE) | |
538 | { | |
539 | bfd_set_error (bfd_error_bad_value); | |
540 | (*_bfd_error_handler) (_("Stack overflow (%d) in _bfd_vms_push"), PRIV(stackptr)); | |
541 | exit (1); | |
542 | } | |
543 | return; | |
544 | } | |
545 | ||
252b5132 RH |
546 | /* Pop value and section index */ |
547 | ||
548 | uquad | |
549 | _bfd_vms_pop (abfd, psect) | |
550 | bfd *abfd; | |
551 | int *psect; | |
552 | { | |
553 | uquad value; | |
554 | ||
555 | if (PRIV(stackptr) == 0) | |
556 | { | |
557 | bfd_set_error (bfd_error_bad_value); | |
558 | (*_bfd_error_handler) (_("Stack underflow in _bfd_vms_pop")); | |
559 | exit (1); | |
560 | } | |
561 | PRIV(stackptr)--; | |
562 | value = PRIV(stack[PRIV(stackptr)]).value; | |
563 | if ((psect != NULL) && (PRIV(stack[PRIV(stackptr)]).psect >= 0)) | |
564 | *psect = PRIV(stack[PRIV(stackptr)]).psect; | |
565 | ||
566 | #if VMS_DEBUG | |
567 | vms_debug (4, "<pop %016lx(%d)>\n", value, PRIV(stack[PRIV(stackptr)]).psect); | |
568 | #endif | |
569 | ||
570 | return value; | |
571 | } | |
572 | ||
573 | \f | |
574 | /* object file output functions */ | |
575 | ||
576 | /* GAS tends to write sections in little chunks (bfd_set_section_contents) | |
577 | which we can't use directly. So we save the little chunks in linked | |
578 | lists (one per section) and write them later. */ | |
579 | ||
580 | /* Add a new vms_section structure to vms_section_table | |
581 | - forward chaining - */ | |
582 | ||
583 | static vms_section * | |
584 | add_new_contents (abfd, section) | |
585 | bfd *abfd; | |
586 | sec_ptr section; | |
587 | { | |
588 | vms_section *sptr, *newptr; | |
589 | ||
590 | sptr = PRIV(vms_section_table)[section->index]; | |
591 | if (sptr != NULL) | |
592 | return sptr; | |
593 | ||
594 | newptr = (vms_section *) bfd_malloc (sizeof (vms_section)); | |
595 | if (newptr == (vms_section *) NULL) | |
596 | return NULL; | |
597 | newptr->contents = (unsigned char *) bfd_alloc (abfd, (int)section->_raw_size); | |
598 | if (newptr->contents == (unsigned char *)NULL) | |
599 | return NULL; | |
600 | newptr->offset = 0; | |
601 | newptr->size = section->_raw_size; | |
602 | newptr->next = 0; | |
603 | PRIV(vms_section_table)[section->index] = newptr; | |
604 | return newptr; | |
605 | } | |
606 | ||
252b5132 RH |
607 | /* Save section data & offset to an vms_section structure |
608 | vms_section_table[] holds the vms_section chain */ | |
609 | ||
610 | boolean | |
611 | _bfd_save_vms_section (abfd, section, data, offset, count) | |
612 | bfd *abfd; | |
613 | sec_ptr section; | |
614 | PTR data; | |
615 | file_ptr offset; | |
616 | bfd_size_type count; | |
617 | { | |
618 | vms_section *sptr; | |
619 | ||
620 | if (section->index >= VMS_SECTION_COUNT) | |
621 | { | |
622 | bfd_set_error (bfd_error_nonrepresentable_section); | |
623 | return false; | |
624 | } | |
625 | if (count == (bfd_size_type)0) | |
626 | return true; | |
627 | sptr = add_new_contents (abfd, section); | |
628 | if (sptr == NULL) | |
629 | return false; | |
630 | memcpy (sptr->contents + offset, data, (size_t) count); | |
631 | ||
632 | return true; | |
633 | } | |
634 | ||
252b5132 RH |
635 | /* Get vms_section pointer to saved contents for section # index */ |
636 | ||
637 | vms_section * | |
638 | _bfd_get_vms_section (abfd, index) | |
639 | bfd *abfd; | |
640 | int index; | |
641 | { | |
642 | if (index >= VMS_SECTION_COUNT) | |
643 | { | |
644 | bfd_set_error (bfd_error_nonrepresentable_section); | |
645 | return NULL; | |
646 | } | |
647 | return PRIV(vms_section_table)[index]; | |
648 | } | |
649 | ||
650 | \f | |
651 | /* Object output routines */ | |
652 | ||
653 | /* Begin new record or record header | |
654 | write 2 bytes rectype | |
655 | write 2 bytes record length (filled in at flush) | |
656 | write 2 bytes header type (ommitted if rechead == -1) */ | |
657 | ||
658 | void | |
659 | _bfd_vms_output_begin (abfd, rectype, rechead) | |
660 | bfd *abfd; | |
661 | int rectype; | |
662 | int rechead; | |
663 | { | |
664 | #if VMS_DEBUG | |
665 | vms_debug (6, "_bfd_vms_output_begin(type %d, head %d)\n", rectype, | |
666 | rechead); | |
667 | #endif | |
668 | ||
669 | _bfd_vms_output_short (abfd,rectype); | |
670 | ||
671 | /* save current output position to fill in lenght later */ | |
672 | ||
673 | if (PRIV(push_level) > 0) | |
674 | PRIV(length_pos) = PRIV(output_size); | |
675 | ||
676 | #if VMS_DEBUG | |
677 | vms_debug (6, "_bfd_vms_output_begin: length_pos = %d\n", | |
678 | PRIV(length_pos)); | |
679 | #endif | |
680 | ||
681 | _bfd_vms_output_short (abfd,0); /* placeholder for length */ | |
682 | ||
683 | if (rechead != -1) | |
684 | _bfd_vms_output_short (abfd,rechead); | |
685 | ||
686 | return; | |
687 | } | |
688 | ||
252b5132 RH |
689 | /* Set record/subrecord alignment */ |
690 | ||
691 | void | |
692 | _bfd_vms_output_alignment (abfd, alignto) | |
693 | bfd *abfd; | |
694 | int alignto; | |
695 | { | |
696 | #if VMS_DEBUG | |
697 | vms_debug (6, "_bfd_vms_output_alignment(%d)\n", alignto); | |
698 | #endif | |
699 | ||
700 | PRIV(output_alignment) = alignto; | |
701 | return; | |
702 | } | |
703 | ||
252b5132 RH |
704 | /* Prepare for subrecord fields */ |
705 | ||
706 | void | |
707 | _bfd_vms_output_push (abfd) | |
708 | bfd *abfd; | |
709 | { | |
710 | #if VMS_DEBUG | |
711 | vms_debug (6, "vms_output_push(pushed_size = %d)\n", PRIV(output_size)); | |
712 | #endif | |
713 | ||
714 | PRIV(push_level)++; | |
715 | PRIV(pushed_size) = PRIV(output_size); | |
716 | return; | |
717 | } | |
718 | ||
252b5132 RH |
719 | /* End of subrecord fields */ |
720 | ||
721 | void | |
722 | _bfd_vms_output_pop (abfd) | |
723 | bfd *abfd; | |
724 | { | |
725 | #if VMS_DEBUG | |
726 | vms_debug (6, "vms_output_pop(pushed_size = %d)\n", PRIV(pushed_size)); | |
727 | #endif | |
728 | ||
729 | _bfd_vms_output_flush (abfd); | |
730 | PRIV(length_pos) = 2; | |
731 | ||
732 | #if VMS_DEBUG | |
733 | vms_debug (6, "vms_output_pop: length_pos = %d\n", PRIV(length_pos)); | |
734 | #endif | |
735 | ||
736 | PRIV(pushed_size) = 0; | |
737 | PRIV(push_level)--; | |
738 | return; | |
739 | } | |
740 | ||
252b5132 RH |
741 | /* Flush unwritten output, ends current record */ |
742 | ||
743 | void | |
744 | _bfd_vms_output_flush (abfd) | |
745 | bfd *abfd; | |
746 | { | |
747 | int real_size = PRIV(output_size); | |
748 | int aligncount; | |
749 | int length; | |
750 | ||
751 | #if VMS_DEBUG | |
752 | vms_debug (6, "_bfd_vms_output_flush(real_size = %d, pushed_size %d at lenpos %d)\n", | |
753 | real_size, PRIV(pushed_size), PRIV(length_pos)); | |
754 | #endif | |
755 | ||
756 | if (PRIV(push_level) > 0) | |
757 | length = real_size - PRIV(pushed_size); | |
758 | else | |
759 | length = real_size; | |
760 | ||
761 | if (length == 0) | |
762 | return; | |
763 | aligncount = (PRIV(output_alignment) | |
764 | - (length % PRIV(output_alignment))) % PRIV(output_alignment); | |
765 | ||
766 | #if VMS_DEBUG | |
767 | vms_debug (6, "align: adding %d bytes\n", aligncount); | |
768 | #endif | |
769 | ||
558e161f | 770 | while (aligncount-- > 0) |
252b5132 RH |
771 | { |
772 | PRIV(output_buf)[real_size++] = 0; | |
773 | #if 0 | |
774 | /* this is why I *love* vms: inconsistency :-} | |
775 | alignment is added to the subrecord length | |
776 | but not to the record length */ | |
777 | if (PRIV(push_level) > 0) | |
778 | #endif | |
779 | length++; | |
780 | } | |
781 | ||
782 | /* put length to buffer */ | |
783 | PRIV(output_size) = PRIV(length_pos); | |
784 | _bfd_vms_output_short (abfd, (unsigned int)length); | |
785 | ||
786 | if (PRIV(push_level) == 0) | |
787 | { | |
788 | #ifndef VMS | |
789 | /* write length first, see FF_FOREIGN in the input routines */ | |
790 | fwrite (PRIV(output_buf)+2, 2, 1, (FILE *)abfd->iostream); | |
791 | #endif | |
792 | fwrite (PRIV(output_buf), real_size, 1, (FILE *)abfd->iostream); | |
793 | ||
794 | PRIV(output_size) = 0; | |
795 | } | |
796 | else | |
797 | { | |
798 | PRIV(output_size) = real_size; | |
799 | PRIV(pushed_size) = PRIV(output_size); | |
800 | } | |
801 | ||
802 | return; | |
803 | } | |
804 | ||
252b5132 RH |
805 | /* End record output */ |
806 | ||
807 | void | |
808 | _bfd_vms_output_end (abfd) | |
809 | bfd *abfd; | |
810 | { | |
811 | #if VMS_DEBUG | |
812 | vms_debug (6, "_bfd_vms_output_end\n"); | |
813 | #endif | |
814 | ||
815 | _bfd_vms_output_flush (abfd); | |
816 | ||
817 | return; | |
818 | } | |
819 | ||
252b5132 RH |
820 | /* check remaining buffer size |
821 | ||
822 | return what's left. */ | |
823 | ||
824 | int | |
825 | _bfd_vms_output_check (abfd, size) | |
826 | bfd *abfd; | |
827 | int size; | |
828 | { | |
829 | #if VMS_DEBUG | |
830 | vms_debug (6, "_bfd_vms_output_check(%d)\n", size); | |
831 | #endif | |
832 | ||
833 | return (MAX_OUTREC_SIZE - (PRIV(output_size) + size + MIN_OUTREC_LUFT)); | |
834 | } | |
835 | ||
252b5132 RH |
836 | /* Output byte (8 bit) value */ |
837 | ||
838 | void | |
839 | _bfd_vms_output_byte (abfd, value) | |
840 | bfd *abfd; | |
841 | unsigned int value; | |
842 | { | |
843 | #if VMS_DEBUG | |
844 | vms_debug (6, "_bfd_vms_output_byte(%02x)\n", value); | |
845 | #endif | |
846 | ||
847 | bfd_put_8 (abfd, value & 0xff, PRIV(output_buf) + PRIV(output_size)); | |
848 | PRIV(output_size) += 1; | |
849 | return; | |
850 | } | |
851 | ||
252b5132 RH |
852 | /* Output short (16 bit) value */ |
853 | ||
854 | void | |
855 | _bfd_vms_output_short (abfd, value) | |
856 | bfd *abfd; | |
857 | unsigned int value; | |
858 | { | |
859 | #if VMS_DEBUG | |
860 | vms_debug (6, "_bfd_vms_output_short (%04x)\n", value); | |
861 | #endif | |
862 | ||
863 | bfd_put_16 (abfd, value & 0xffff, PRIV(output_buf) + PRIV(output_size)); | |
864 | PRIV(output_size) += 2; | |
865 | return; | |
866 | } | |
867 | ||
252b5132 RH |
868 | /* Output long (32 bit) value */ |
869 | ||
870 | void | |
871 | _bfd_vms_output_long (abfd, value) | |
872 | bfd *abfd; | |
873 | unsigned long value; | |
874 | { | |
875 | #if VMS_DEBUG | |
876 | vms_debug (6, "_bfd_vms_output_long (%08lx)\n", value); | |
877 | #endif | |
878 | ||
879 | bfd_put_32 (abfd, value, PRIV(output_buf) + PRIV(output_size)); | |
880 | PRIV(output_size) += 4; | |
881 | return; | |
882 | } | |
883 | ||
252b5132 RH |
884 | /* Output quad (64 bit) value */ |
885 | ||
886 | void | |
887 | _bfd_vms_output_quad (abfd, value) | |
888 | bfd *abfd; | |
889 | uquad value; | |
890 | { | |
891 | #if VMS_DEBUG | |
892 | vms_debug (6, "_bfd_vms_output_quad(%016lx)\n", value); | |
893 | #endif | |
894 | ||
895 | bfd_put_64(abfd, value, PRIV(output_buf) + PRIV(output_size)); | |
896 | PRIV(output_size) += 8; | |
897 | return; | |
898 | } | |
899 | ||
252b5132 RH |
900 | /* Output c-string as counted string */ |
901 | ||
902 | void | |
903 | _bfd_vms_output_counted (abfd, value) | |
904 | bfd *abfd; | |
905 | char *value; | |
906 | { | |
907 | int len; | |
908 | ||
909 | #if VMS_DEBUG | |
910 | vms_debug (6, "_bfd_vms_output_counted(%s)\n", value); | |
911 | #endif | |
912 | ||
913 | len = strlen (value); | |
914 | if (len == 0) | |
915 | { | |
916 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with zero bytes")); | |
917 | return; | |
918 | } | |
919 | if (len > 255) | |
920 | { | |
921 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with too many bytes")); | |
922 | return; | |
923 | } | |
924 | _bfd_vms_output_byte (abfd, len & 0xff); | |
925 | _bfd_vms_output_dump (abfd, (unsigned char *)value, len); | |
926 | } | |
927 | ||
252b5132 RH |
928 | /* Output character area */ |
929 | ||
930 | void | |
931 | _bfd_vms_output_dump (abfd, data, length) | |
932 | bfd *abfd; | |
933 | unsigned char *data; | |
934 | int length; | |
935 | { | |
936 | #if VMS_DEBUG | |
937 | vms_debug (6, "_bfd_vms_output_dump(%d)\n", length); | |
938 | #endif | |
939 | ||
940 | if (length == 0) | |
941 | return; | |
942 | ||
943 | memcpy (PRIV(output_buf) + PRIV(output_size), data, length); | |
944 | PRIV(output_size) += length; | |
945 | ||
946 | return; | |
947 | } | |
948 | ||
252b5132 RH |
949 | /* Output count bytes of value */ |
950 | ||
951 | void | |
952 | _bfd_vms_output_fill (abfd, value, count) | |
953 | bfd *abfd; | |
954 | int value; | |
955 | int count; | |
956 | { | |
957 | #if VMS_DEBUG | |
958 | vms_debug (6, "_bfd_vms_output_fill(val %02x times %d)\n", value, count); | |
959 | #endif | |
960 | ||
961 | if (count == 0) | |
962 | return; | |
963 | memset (PRIV(output_buf) + PRIV(output_size), value, count); | |
964 | PRIV(output_size) += count; | |
965 | ||
966 | return; | |
967 | } | |
968 | ||
969 | /* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ | |
970 | ||
971 | static int | |
972 | hash_string (ptr) | |
973 | const char *ptr; | |
974 | { | |
975 | register const unsigned char *p = (unsigned char *) ptr; | |
976 | register const unsigned char *end = p + strlen (ptr); | |
977 | register unsigned char c; | |
978 | register int hash = 0; | |
979 | ||
980 | while (p != end) | |
981 | { | |
982 | c = *p++; | |
983 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); | |
984 | } | |
985 | return hash; | |
986 | } | |
987 | ||
988 | /* Generate a length-hashed VMS symbol name (limited to maxlen chars). */ | |
989 | ||
990 | char * | |
991 | _bfd_vms_length_hash_symbol (abfd, in, maxlen) | |
992 | bfd *abfd; | |
993 | const char *in; | |
994 | int maxlen; | |
995 | { | |
252b5132 RH |
996 | long int result; |
997 | int in_len; | |
252b5132 RH |
998 | char *new_name; |
999 | const char *old_name; | |
1000 | int i; | |
1001 | static char outbuf[EOBJ_S_C_SYMSIZ+1]; | |
1002 | char *out = outbuf; | |
1003 | ||
1004 | #if VMS_DEBUG | |
1005 | vms_debug(4, "_bfd_vms_length_hash_symbol \"%s\"\n", in); | |
1006 | #endif | |
1007 | ||
1008 | if (maxlen > EOBJ_S_C_SYMSIZ) | |
1009 | maxlen = EOBJ_S_C_SYMSIZ; | |
1010 | ||
1011 | new_name = out; /* save this for later. */ | |
1012 | ||
1013 | /* We may need to truncate the symbol, save the hash for later. */ | |
1014 | ||
1015 | in_len = strlen (in); | |
1016 | ||
1017 | result = (in_len > maxlen) ? hash_string (in) : 0; | |
1018 | ||
1019 | old_name = in; | |
1020 | ||
1021 | /* Do the length checking. */ | |
1022 | ||
1023 | if (in_len <= maxlen) | |
1024 | { | |
1025 | i = in_len; | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | if (PRIV(flag_hash_long_names)) | |
1030 | i = maxlen-9; | |
1031 | else | |
1032 | i = maxlen; | |
1033 | } | |
1034 | ||
1035 | strncpy (out, in, i); | |
1036 | in += i; | |
1037 | out += i; | |
1038 | ||
1039 | if ((in_len > maxlen) | |
1040 | && PRIV(flag_hash_long_names)) | |
e049a0de | 1041 | sprintf (out, "_%08lx", result); |
252b5132 RH |
1042 | else |
1043 | *out = 0; | |
1044 | ||
1045 | #if VMS_DEBUG | |
1046 | vms_debug(4, "--> [%d]\"%s\"\n", strlen (outbuf), outbuf); | |
1047 | #endif | |
1048 | ||
1049 | if (in_len > maxlen | |
1050 | && PRIV(flag_hash_long_names) | |
1051 | && PRIV(flag_show_after_trunc)) | |
1052 | printf (_("Symbol %s replaced by %s\n"), old_name, new_name); | |
1053 | ||
1054 | return outbuf; | |
1055 | } | |
1056 | ||
252b5132 RH |
1057 | /* Allocate and initialize a new symbol. */ |
1058 | ||
1059 | static asymbol * | |
1060 | new_symbol (abfd, name) | |
1061 | bfd *abfd; | |
1062 | char *name; | |
1063 | { | |
1064 | asymbol *symbol; | |
1065 | ||
1066 | #if VMS_DEBUG | |
1067 | _bfd_vms_debug (7, "new_symbol %s\n", name); | |
1068 | #endif | |
1069 | ||
1070 | symbol = _bfd_vms_make_empty_symbol (abfd); | |
1071 | if (symbol == 0) | |
1072 | return symbol; | |
1073 | symbol->name = name; | |
1074 | symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME); | |
1075 | ||
1076 | return symbol; | |
1077 | } | |
1078 | ||
252b5132 RH |
1079 | /* Allocate and enter a new private symbol. */ |
1080 | ||
1081 | vms_symbol_entry * | |
1082 | _bfd_vms_enter_symbol (abfd, name) | |
1083 | bfd *abfd; | |
1084 | char *name; | |
1085 | { | |
1086 | vms_symbol_entry *entry; | |
1087 | ||
1088 | #if VMS_DEBUG | |
1089 | _bfd_vms_debug (6, "_bfd_vms_enter_symbol %s\n", name); | |
1090 | #endif | |
1091 | ||
1092 | entry = (vms_symbol_entry *) | |
1093 | bfd_hash_lookup (PRIV(vms_symbol_table), name, false, false); | |
1094 | if (entry == 0) | |
1095 | { | |
1096 | #if VMS_DEBUG | |
1097 | _bfd_vms_debug (8, "creating hash entry for %s\n", name); | |
1098 | #endif | |
1099 | entry = (vms_symbol_entry *)bfd_hash_lookup (PRIV(vms_symbol_table), name, true, false); | |
1100 | if (entry != 0) | |
1101 | { | |
1102 | asymbol *symbol; | |
1103 | symbol = new_symbol (abfd, name); | |
1104 | if (symbol != 0) | |
1105 | { | |
1106 | entry->symbol = symbol; | |
1107 | PRIV(gsd_sym_count)++; | |
1108 | abfd->symcount++; | |
1109 | } | |
1110 | else | |
1111 | entry = 0; | |
1112 | } | |
1113 | else | |
1114 | (*_bfd_error_handler) (_("failed to enter %s"), name); | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | #if VMS_DEBUG | |
1119 | _bfd_vms_debug (8, "found hash entry for %s\n", name); | |
1120 | #endif | |
1121 | } | |
1122 | ||
1123 | #if VMS_DEBUG | |
1124 | _bfd_vms_debug (7, "-> entry %p, entry->symbol %p\n", entry, entry->symbol); | |
1125 | #endif | |
1126 | return entry; | |
1127 | } |