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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 | ||
63e39178 L |
458 | if (!PRIV(vms_rec)) |
459 | return -1; | |
460 | ||
252b5132 RH |
461 | if (PRIV(is_vax)) |
462 | { | |
463 | PRIV(rec_type) = *(PRIV(vms_rec)); | |
464 | PRIV(rec_size) = PRIV(rec_length); | |
465 | } | |
466 | else | |
467 | { | |
468 | _bfd_vms_get_header_values (abfd, PRIV(vms_rec), &PRIV(rec_type), | |
469 | &PRIV(rec_size)); | |
470 | } | |
471 | PRIV(rec_length) -= PRIV(rec_size); | |
472 | ||
473 | #if VMS_DEBUG | |
474 | vms_debug (8, "_bfd_vms_next_record: rec %p, size %d, length %d, type %d\n", | |
475 | PRIV(vms_rec), PRIV(rec_size), PRIV(rec_length), | |
476 | PRIV(rec_type)); | |
477 | #endif | |
478 | ||
479 | return PRIV(rec_type); | |
480 | } | |
481 | ||
252b5132 RH |
482 | \f |
483 | /* Copy sized string (string with fixed length) to new allocated area | |
484 | size is string length (size of record) */ | |
485 | ||
486 | char * | |
487 | _bfd_vms_save_sized_string (str, size) | |
488 | unsigned char *str; | |
489 | int size; | |
490 | { | |
491 | char *newstr = bfd_malloc (size + 1); | |
492 | ||
493 | if (newstr == NULL) | |
494 | return 0; | |
495 | strncpy (newstr, (char *)str, size); | |
496 | newstr[size] = 0; | |
497 | ||
498 | return newstr; | |
499 | } | |
500 | ||
501 | /* Copy counted string (string with length at first byte) to new allocated area | |
502 | ptr points to length byte on entry */ | |
503 | ||
504 | char * | |
505 | _bfd_vms_save_counted_string (ptr) | |
506 | unsigned char *ptr; | |
507 | { | |
508 | int len = *ptr++; | |
509 | ||
510 | return _bfd_vms_save_sized_string (ptr, len); | |
511 | } | |
512 | ||
513 | \f | |
514 | /* stack routines for vms ETIR commands */ | |
515 | ||
516 | /* Push value and section index */ | |
517 | ||
518 | void | |
519 | _bfd_vms_push (abfd, val, psect) | |
520 | bfd *abfd; | |
521 | uquad val; | |
522 | int psect; | |
523 | { | |
524 | static int last_psect; | |
525 | ||
526 | #if VMS_DEBUG | |
527 | vms_debug (4, "<push %016lx(%d) at %d>\n", val, psect, PRIV(stackptr)); | |
528 | #endif | |
529 | ||
530 | if (psect >= 0) | |
531 | last_psect = psect; | |
532 | ||
533 | PRIV(stack[PRIV(stackptr)]).value = val; | |
534 | PRIV(stack[PRIV(stackptr)]).psect = last_psect; | |
535 | PRIV(stackptr)++; | |
536 | if (PRIV(stackptr) >= STACKSIZE) | |
537 | { | |
538 | bfd_set_error (bfd_error_bad_value); | |
539 | (*_bfd_error_handler) (_("Stack overflow (%d) in _bfd_vms_push"), PRIV(stackptr)); | |
540 | exit (1); | |
541 | } | |
542 | return; | |
543 | } | |
544 | ||
252b5132 RH |
545 | /* Pop value and section index */ |
546 | ||
547 | uquad | |
548 | _bfd_vms_pop (abfd, psect) | |
549 | bfd *abfd; | |
550 | int *psect; | |
551 | { | |
552 | uquad value; | |
553 | ||
554 | if (PRIV(stackptr) == 0) | |
555 | { | |
556 | bfd_set_error (bfd_error_bad_value); | |
557 | (*_bfd_error_handler) (_("Stack underflow in _bfd_vms_pop")); | |
558 | exit (1); | |
559 | } | |
560 | PRIV(stackptr)--; | |
561 | value = PRIV(stack[PRIV(stackptr)]).value; | |
562 | if ((psect != NULL) && (PRIV(stack[PRIV(stackptr)]).psect >= 0)) | |
563 | *psect = PRIV(stack[PRIV(stackptr)]).psect; | |
564 | ||
565 | #if VMS_DEBUG | |
566 | vms_debug (4, "<pop %016lx(%d)>\n", value, PRIV(stack[PRIV(stackptr)]).psect); | |
567 | #endif | |
568 | ||
569 | return value; | |
570 | } | |
571 | ||
572 | \f | |
573 | /* object file output functions */ | |
574 | ||
575 | /* GAS tends to write sections in little chunks (bfd_set_section_contents) | |
576 | which we can't use directly. So we save the little chunks in linked | |
577 | lists (one per section) and write them later. */ | |
578 | ||
579 | /* Add a new vms_section structure to vms_section_table | |
580 | - forward chaining - */ | |
581 | ||
582 | static vms_section * | |
583 | add_new_contents (abfd, section) | |
584 | bfd *abfd; | |
585 | sec_ptr section; | |
586 | { | |
587 | vms_section *sptr, *newptr; | |
588 | ||
589 | sptr = PRIV(vms_section_table)[section->index]; | |
590 | if (sptr != NULL) | |
591 | return sptr; | |
592 | ||
593 | newptr = (vms_section *) bfd_malloc (sizeof (vms_section)); | |
594 | if (newptr == (vms_section *) NULL) | |
595 | return NULL; | |
596 | newptr->contents = (unsigned char *) bfd_alloc (abfd, (int)section->_raw_size); | |
597 | if (newptr->contents == (unsigned char *)NULL) | |
598 | return NULL; | |
599 | newptr->offset = 0; | |
600 | newptr->size = section->_raw_size; | |
601 | newptr->next = 0; | |
602 | PRIV(vms_section_table)[section->index] = newptr; | |
603 | return newptr; | |
604 | } | |
605 | ||
252b5132 RH |
606 | /* Save section data & offset to an vms_section structure |
607 | vms_section_table[] holds the vms_section chain */ | |
608 | ||
609 | boolean | |
610 | _bfd_save_vms_section (abfd, section, data, offset, count) | |
611 | bfd *abfd; | |
612 | sec_ptr section; | |
613 | PTR data; | |
614 | file_ptr offset; | |
615 | bfd_size_type count; | |
616 | { | |
617 | vms_section *sptr; | |
618 | ||
619 | if (section->index >= VMS_SECTION_COUNT) | |
620 | { | |
621 | bfd_set_error (bfd_error_nonrepresentable_section); | |
622 | return false; | |
623 | } | |
624 | if (count == (bfd_size_type)0) | |
625 | return true; | |
626 | sptr = add_new_contents (abfd, section); | |
627 | if (sptr == NULL) | |
628 | return false; | |
629 | memcpy (sptr->contents + offset, data, (size_t) count); | |
630 | ||
631 | return true; | |
632 | } | |
633 | ||
252b5132 RH |
634 | /* Get vms_section pointer to saved contents for section # index */ |
635 | ||
636 | vms_section * | |
637 | _bfd_get_vms_section (abfd, index) | |
638 | bfd *abfd; | |
639 | int index; | |
640 | { | |
641 | if (index >= VMS_SECTION_COUNT) | |
642 | { | |
643 | bfd_set_error (bfd_error_nonrepresentable_section); | |
644 | return NULL; | |
645 | } | |
646 | return PRIV(vms_section_table)[index]; | |
647 | } | |
648 | ||
649 | \f | |
650 | /* Object output routines */ | |
651 | ||
652 | /* Begin new record or record header | |
653 | write 2 bytes rectype | |
654 | write 2 bytes record length (filled in at flush) | |
655 | write 2 bytes header type (ommitted if rechead == -1) */ | |
656 | ||
657 | void | |
658 | _bfd_vms_output_begin (abfd, rectype, rechead) | |
659 | bfd *abfd; | |
660 | int rectype; | |
661 | int rechead; | |
662 | { | |
663 | #if VMS_DEBUG | |
664 | vms_debug (6, "_bfd_vms_output_begin(type %d, head %d)\n", rectype, | |
665 | rechead); | |
666 | #endif | |
667 | ||
668 | _bfd_vms_output_short (abfd,rectype); | |
669 | ||
670 | /* save current output position to fill in lenght later */ | |
671 | ||
672 | if (PRIV(push_level) > 0) | |
673 | PRIV(length_pos) = PRIV(output_size); | |
674 | ||
675 | #if VMS_DEBUG | |
676 | vms_debug (6, "_bfd_vms_output_begin: length_pos = %d\n", | |
677 | PRIV(length_pos)); | |
678 | #endif | |
679 | ||
680 | _bfd_vms_output_short (abfd,0); /* placeholder for length */ | |
681 | ||
682 | if (rechead != -1) | |
683 | _bfd_vms_output_short (abfd,rechead); | |
684 | ||
685 | return; | |
686 | } | |
687 | ||
252b5132 RH |
688 | /* Set record/subrecord alignment */ |
689 | ||
690 | void | |
691 | _bfd_vms_output_alignment (abfd, alignto) | |
692 | bfd *abfd; | |
693 | int alignto; | |
694 | { | |
695 | #if VMS_DEBUG | |
696 | vms_debug (6, "_bfd_vms_output_alignment(%d)\n", alignto); | |
697 | #endif | |
698 | ||
699 | PRIV(output_alignment) = alignto; | |
700 | return; | |
701 | } | |
702 | ||
252b5132 RH |
703 | /* Prepare for subrecord fields */ |
704 | ||
705 | void | |
706 | _bfd_vms_output_push (abfd) | |
707 | bfd *abfd; | |
708 | { | |
709 | #if VMS_DEBUG | |
710 | vms_debug (6, "vms_output_push(pushed_size = %d)\n", PRIV(output_size)); | |
711 | #endif | |
712 | ||
713 | PRIV(push_level)++; | |
714 | PRIV(pushed_size) = PRIV(output_size); | |
715 | return; | |
716 | } | |
717 | ||
252b5132 RH |
718 | /* End of subrecord fields */ |
719 | ||
720 | void | |
721 | _bfd_vms_output_pop (abfd) | |
722 | bfd *abfd; | |
723 | { | |
724 | #if VMS_DEBUG | |
725 | vms_debug (6, "vms_output_pop(pushed_size = %d)\n", PRIV(pushed_size)); | |
726 | #endif | |
727 | ||
728 | _bfd_vms_output_flush (abfd); | |
729 | PRIV(length_pos) = 2; | |
730 | ||
731 | #if VMS_DEBUG | |
732 | vms_debug (6, "vms_output_pop: length_pos = %d\n", PRIV(length_pos)); | |
733 | #endif | |
734 | ||
735 | PRIV(pushed_size) = 0; | |
736 | PRIV(push_level)--; | |
737 | return; | |
738 | } | |
739 | ||
252b5132 RH |
740 | /* Flush unwritten output, ends current record */ |
741 | ||
742 | void | |
743 | _bfd_vms_output_flush (abfd) | |
744 | bfd *abfd; | |
745 | { | |
746 | int real_size = PRIV(output_size); | |
747 | int aligncount; | |
748 | int length; | |
749 | ||
750 | #if VMS_DEBUG | |
751 | vms_debug (6, "_bfd_vms_output_flush(real_size = %d, pushed_size %d at lenpos %d)\n", | |
752 | real_size, PRIV(pushed_size), PRIV(length_pos)); | |
753 | #endif | |
754 | ||
755 | if (PRIV(push_level) > 0) | |
756 | length = real_size - PRIV(pushed_size); | |
757 | else | |
758 | length = real_size; | |
759 | ||
760 | if (length == 0) | |
761 | return; | |
762 | aligncount = (PRIV(output_alignment) | |
763 | - (length % PRIV(output_alignment))) % PRIV(output_alignment); | |
764 | ||
765 | #if VMS_DEBUG | |
766 | vms_debug (6, "align: adding %d bytes\n", aligncount); | |
767 | #endif | |
768 | ||
558e161f | 769 | while (aligncount-- > 0) |
252b5132 RH |
770 | { |
771 | PRIV(output_buf)[real_size++] = 0; | |
772 | #if 0 | |
773 | /* this is why I *love* vms: inconsistency :-} | |
774 | alignment is added to the subrecord length | |
775 | but not to the record length */ | |
776 | if (PRIV(push_level) > 0) | |
777 | #endif | |
778 | length++; | |
779 | } | |
780 | ||
781 | /* put length to buffer */ | |
782 | PRIV(output_size) = PRIV(length_pos); | |
783 | _bfd_vms_output_short (abfd, (unsigned int)length); | |
784 | ||
785 | if (PRIV(push_level) == 0) | |
786 | { | |
787 | #ifndef VMS | |
788 | /* write length first, see FF_FOREIGN in the input routines */ | |
789 | fwrite (PRIV(output_buf)+2, 2, 1, (FILE *)abfd->iostream); | |
790 | #endif | |
791 | fwrite (PRIV(output_buf), real_size, 1, (FILE *)abfd->iostream); | |
792 | ||
793 | PRIV(output_size) = 0; | |
794 | } | |
795 | else | |
796 | { | |
797 | PRIV(output_size) = real_size; | |
798 | PRIV(pushed_size) = PRIV(output_size); | |
799 | } | |
800 | ||
801 | return; | |
802 | } | |
803 | ||
252b5132 RH |
804 | /* End record output */ |
805 | ||
806 | void | |
807 | _bfd_vms_output_end (abfd) | |
808 | bfd *abfd; | |
809 | { | |
810 | #if VMS_DEBUG | |
811 | vms_debug (6, "_bfd_vms_output_end\n"); | |
812 | #endif | |
813 | ||
814 | _bfd_vms_output_flush (abfd); | |
815 | ||
816 | return; | |
817 | } | |
818 | ||
252b5132 RH |
819 | /* check remaining buffer size |
820 | ||
821 | return what's left. */ | |
822 | ||
823 | int | |
824 | _bfd_vms_output_check (abfd, size) | |
825 | bfd *abfd; | |
826 | int size; | |
827 | { | |
828 | #if VMS_DEBUG | |
829 | vms_debug (6, "_bfd_vms_output_check(%d)\n", size); | |
830 | #endif | |
831 | ||
832 | return (MAX_OUTREC_SIZE - (PRIV(output_size) + size + MIN_OUTREC_LUFT)); | |
833 | } | |
834 | ||
252b5132 RH |
835 | /* Output byte (8 bit) value */ |
836 | ||
837 | void | |
838 | _bfd_vms_output_byte (abfd, value) | |
839 | bfd *abfd; | |
840 | unsigned int value; | |
841 | { | |
842 | #if VMS_DEBUG | |
843 | vms_debug (6, "_bfd_vms_output_byte(%02x)\n", value); | |
844 | #endif | |
845 | ||
846 | bfd_put_8 (abfd, value & 0xff, PRIV(output_buf) + PRIV(output_size)); | |
847 | PRIV(output_size) += 1; | |
848 | return; | |
849 | } | |
850 | ||
252b5132 RH |
851 | /* Output short (16 bit) value */ |
852 | ||
853 | void | |
854 | _bfd_vms_output_short (abfd, value) | |
855 | bfd *abfd; | |
856 | unsigned int value; | |
857 | { | |
858 | #if VMS_DEBUG | |
859 | vms_debug (6, "_bfd_vms_output_short (%04x)\n", value); | |
860 | #endif | |
861 | ||
862 | bfd_put_16 (abfd, value & 0xffff, PRIV(output_buf) + PRIV(output_size)); | |
863 | PRIV(output_size) += 2; | |
864 | return; | |
865 | } | |
866 | ||
252b5132 RH |
867 | /* Output long (32 bit) value */ |
868 | ||
869 | void | |
870 | _bfd_vms_output_long (abfd, value) | |
871 | bfd *abfd; | |
872 | unsigned long value; | |
873 | { | |
874 | #if VMS_DEBUG | |
875 | vms_debug (6, "_bfd_vms_output_long (%08lx)\n", value); | |
876 | #endif | |
877 | ||
878 | bfd_put_32 (abfd, value, PRIV(output_buf) + PRIV(output_size)); | |
879 | PRIV(output_size) += 4; | |
880 | return; | |
881 | } | |
882 | ||
252b5132 RH |
883 | /* Output quad (64 bit) value */ |
884 | ||
885 | void | |
886 | _bfd_vms_output_quad (abfd, value) | |
887 | bfd *abfd; | |
888 | uquad value; | |
889 | { | |
890 | #if VMS_DEBUG | |
891 | vms_debug (6, "_bfd_vms_output_quad(%016lx)\n", value); | |
892 | #endif | |
893 | ||
894 | bfd_put_64(abfd, value, PRIV(output_buf) + PRIV(output_size)); | |
895 | PRIV(output_size) += 8; | |
896 | return; | |
897 | } | |
898 | ||
252b5132 RH |
899 | /* Output c-string as counted string */ |
900 | ||
901 | void | |
902 | _bfd_vms_output_counted (abfd, value) | |
903 | bfd *abfd; | |
904 | char *value; | |
905 | { | |
906 | int len; | |
907 | ||
908 | #if VMS_DEBUG | |
909 | vms_debug (6, "_bfd_vms_output_counted(%s)\n", value); | |
910 | #endif | |
911 | ||
912 | len = strlen (value); | |
913 | if (len == 0) | |
914 | { | |
915 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with zero bytes")); | |
916 | return; | |
917 | } | |
918 | if (len > 255) | |
919 | { | |
920 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with too many bytes")); | |
921 | return; | |
922 | } | |
923 | _bfd_vms_output_byte (abfd, len & 0xff); | |
924 | _bfd_vms_output_dump (abfd, (unsigned char *)value, len); | |
925 | } | |
926 | ||
252b5132 RH |
927 | /* Output character area */ |
928 | ||
929 | void | |
930 | _bfd_vms_output_dump (abfd, data, length) | |
931 | bfd *abfd; | |
932 | unsigned char *data; | |
933 | int length; | |
934 | { | |
935 | #if VMS_DEBUG | |
936 | vms_debug (6, "_bfd_vms_output_dump(%d)\n", length); | |
937 | #endif | |
938 | ||
939 | if (length == 0) | |
940 | return; | |
941 | ||
942 | memcpy (PRIV(output_buf) + PRIV(output_size), data, length); | |
943 | PRIV(output_size) += length; | |
944 | ||
945 | return; | |
946 | } | |
947 | ||
252b5132 RH |
948 | /* Output count bytes of value */ |
949 | ||
950 | void | |
951 | _bfd_vms_output_fill (abfd, value, count) | |
952 | bfd *abfd; | |
953 | int value; | |
954 | int count; | |
955 | { | |
956 | #if VMS_DEBUG | |
957 | vms_debug (6, "_bfd_vms_output_fill(val %02x times %d)\n", value, count); | |
958 | #endif | |
959 | ||
960 | if (count == 0) | |
961 | return; | |
962 | memset (PRIV(output_buf) + PRIV(output_size), value, count); | |
963 | PRIV(output_size) += count; | |
964 | ||
965 | return; | |
966 | } | |
967 | ||
968 | /* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ | |
969 | ||
970 | static int | |
971 | hash_string (ptr) | |
972 | const char *ptr; | |
973 | { | |
974 | register const unsigned char *p = (unsigned char *) ptr; | |
975 | register const unsigned char *end = p + strlen (ptr); | |
976 | register unsigned char c; | |
977 | register int hash = 0; | |
978 | ||
979 | while (p != end) | |
980 | { | |
981 | c = *p++; | |
982 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); | |
983 | } | |
984 | return hash; | |
985 | } | |
986 | ||
987 | /* Generate a length-hashed VMS symbol name (limited to maxlen chars). */ | |
988 | ||
989 | char * | |
990 | _bfd_vms_length_hash_symbol (abfd, in, maxlen) | |
991 | bfd *abfd; | |
992 | const char *in; | |
993 | int maxlen; | |
994 | { | |
252b5132 RH |
995 | long int result; |
996 | int in_len; | |
252b5132 RH |
997 | char *new_name; |
998 | const char *old_name; | |
999 | int i; | |
1000 | static char outbuf[EOBJ_S_C_SYMSIZ+1]; | |
1001 | char *out = outbuf; | |
1002 | ||
1003 | #if VMS_DEBUG | |
1004 | vms_debug(4, "_bfd_vms_length_hash_symbol \"%s\"\n", in); | |
1005 | #endif | |
1006 | ||
1007 | if (maxlen > EOBJ_S_C_SYMSIZ) | |
1008 | maxlen = EOBJ_S_C_SYMSIZ; | |
1009 | ||
1010 | new_name = out; /* save this for later. */ | |
1011 | ||
1012 | /* We may need to truncate the symbol, save the hash for later. */ | |
1013 | ||
1014 | in_len = strlen (in); | |
1015 | ||
1016 | result = (in_len > maxlen) ? hash_string (in) : 0; | |
1017 | ||
1018 | old_name = in; | |
1019 | ||
1020 | /* Do the length checking. */ | |
1021 | ||
1022 | if (in_len <= maxlen) | |
1023 | { | |
1024 | i = in_len; | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | if (PRIV(flag_hash_long_names)) | |
1029 | i = maxlen-9; | |
1030 | else | |
1031 | i = maxlen; | |
1032 | } | |
1033 | ||
1034 | strncpy (out, in, i); | |
1035 | in += i; | |
1036 | out += i; | |
1037 | ||
1038 | if ((in_len > maxlen) | |
1039 | && PRIV(flag_hash_long_names)) | |
e049a0de | 1040 | sprintf (out, "_%08lx", result); |
252b5132 RH |
1041 | else |
1042 | *out = 0; | |
1043 | ||
1044 | #if VMS_DEBUG | |
1045 | vms_debug(4, "--> [%d]\"%s\"\n", strlen (outbuf), outbuf); | |
1046 | #endif | |
1047 | ||
1048 | if (in_len > maxlen | |
1049 | && PRIV(flag_hash_long_names) | |
1050 | && PRIV(flag_show_after_trunc)) | |
1051 | printf (_("Symbol %s replaced by %s\n"), old_name, new_name); | |
1052 | ||
1053 | return outbuf; | |
1054 | } | |
1055 | ||
252b5132 RH |
1056 | /* Allocate and initialize a new symbol. */ |
1057 | ||
1058 | static asymbol * | |
1059 | new_symbol (abfd, name) | |
1060 | bfd *abfd; | |
1061 | char *name; | |
1062 | { | |
1063 | asymbol *symbol; | |
1064 | ||
1065 | #if VMS_DEBUG | |
1066 | _bfd_vms_debug (7, "new_symbol %s\n", name); | |
1067 | #endif | |
1068 | ||
1069 | symbol = _bfd_vms_make_empty_symbol (abfd); | |
1070 | if (symbol == 0) | |
1071 | return symbol; | |
1072 | symbol->name = name; | |
1073 | symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME); | |
1074 | ||
1075 | return symbol; | |
1076 | } | |
1077 | ||
252b5132 RH |
1078 | /* Allocate and enter a new private symbol. */ |
1079 | ||
1080 | vms_symbol_entry * | |
1081 | _bfd_vms_enter_symbol (abfd, name) | |
1082 | bfd *abfd; | |
1083 | char *name; | |
1084 | { | |
1085 | vms_symbol_entry *entry; | |
1086 | ||
1087 | #if VMS_DEBUG | |
1088 | _bfd_vms_debug (6, "_bfd_vms_enter_symbol %s\n", name); | |
1089 | #endif | |
1090 | ||
1091 | entry = (vms_symbol_entry *) | |
1092 | bfd_hash_lookup (PRIV(vms_symbol_table), name, false, false); | |
1093 | if (entry == 0) | |
1094 | { | |
1095 | #if VMS_DEBUG | |
1096 | _bfd_vms_debug (8, "creating hash entry for %s\n", name); | |
1097 | #endif | |
1098 | entry = (vms_symbol_entry *)bfd_hash_lookup (PRIV(vms_symbol_table), name, true, false); | |
1099 | if (entry != 0) | |
1100 | { | |
1101 | asymbol *symbol; | |
1102 | symbol = new_symbol (abfd, name); | |
1103 | if (symbol != 0) | |
1104 | { | |
1105 | entry->symbol = symbol; | |
1106 | PRIV(gsd_sym_count)++; | |
1107 | abfd->symcount++; | |
1108 | } | |
1109 | else | |
1110 | entry = 0; | |
1111 | } | |
1112 | else | |
1113 | (*_bfd_error_handler) (_("failed to enter %s"), name); | |
1114 | } | |
1115 | else | |
1116 | { | |
1117 | #if VMS_DEBUG | |
1118 | _bfd_vms_debug (8, "found hash entry for %s\n", name); | |
1119 | #endif | |
1120 | } | |
1121 | ||
1122 | #if VMS_DEBUG | |
1123 | _bfd_vms_debug (7, "-> entry %p, entry->symbol %p\n", entry, entry->symbol); | |
1124 | #endif | |
1125 | return entry; | |
1126 | } |