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1 | /* BFD back-end for VMS archive files. |
2 | ||
3 | Copyright 2010 Free Software Foundation, Inc. | |
4 | Written by Tristan Gingold <gingold@adacore.com>, AdaCore. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | #include "safe-ctype.h" | |
27 | #include "bfdver.h" | |
28 | #include "vms.h" | |
29 | #include "vms/lbr.h" | |
30 | #include "vms/dcx.h" | |
31 | ||
32 | /* The standard VMS disk block size. */ | |
33 | #ifndef VMS_BLOCK_SIZE | |
34 | #define VMS_BLOCK_SIZE 512 | |
35 | #endif | |
36 | ||
37 | /* Maximum key length (which is also the maximum symbol length in archive). */ | |
38 | #define MAX_KEYLEN 129 | |
39 | ||
40 | /* DCX Submaps. */ | |
41 | ||
42 | struct dcxsbm_desc | |
43 | { | |
44 | unsigned char min_char; | |
45 | unsigned char max_char; | |
46 | unsigned char *flags; | |
47 | unsigned char *nodes; | |
48 | unsigned short *next; | |
49 | }; | |
50 | ||
51 | /* Kind of library. Used to filter in archive_p. */ | |
52 | ||
53 | enum vms_lib_kind | |
54 | { | |
55 | vms_lib_vax, | |
56 | vms_lib_alpha, | |
57 | vms_lib_ia64, | |
58 | vms_lib_txt | |
59 | }; | |
60 | ||
61 | /* Back-end private data. */ | |
62 | ||
63 | struct lib_tdata | |
64 | { | |
65 | /* Major version. */ | |
66 | unsigned char ver; | |
67 | ||
68 | /* Type of the archive. */ | |
69 | unsigned char type; | |
70 | ||
71 | /* Kind of archive. Summary of its type. */ | |
72 | enum vms_lib_kind kind; | |
73 | ||
74 | /* Total size of the mhd (element header). */ | |
75 | unsigned int mhd_size; | |
76 | ||
77 | /* Vector of modules (archive elements), already sorted. */ | |
78 | unsigned int nbr_modules; | |
79 | struct carsym *modules; | |
80 | bfd **cache; | |
81 | ||
82 | /* Vector of symbols (archive map), already sorted. */ | |
83 | unsigned int nbr_syms; | |
84 | struct carsym *syms; | |
85 | ||
86 | /* DCX (decompression) data. */ | |
87 | unsigned int nbr_dcxsbm; | |
88 | struct dcxsbm_desc *dcxsbm; | |
89 | }; | |
90 | ||
91 | #define bfd_libdata(bfd) ((struct lib_tdata *)((bfd)->tdata.any)) | |
92 | ||
93 | /* End-Of-Text pattern. This is a special record to mark the end of file. */ | |
94 | ||
95 | static const unsigned char eotdesc[] = { 0x03, 0x00, 0x77, 0x00, 0x77, 0x00 }; | |
96 | ||
97 | /* Read index block VBN and put the entry in **IDX (which is updated). | |
98 | If the entry is indirect, recurse. */ | |
99 | ||
100 | static bfd_boolean | |
101 | vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym **idx) | |
102 | { | |
103 | struct vms_indexdef indexdef; | |
104 | unsigned int used; | |
105 | file_ptr off; | |
106 | unsigned int i; | |
107 | ||
108 | /* Read the index block. */ | |
109 | off = (vbn - 1) * VMS_BLOCK_SIZE; | |
110 | if (bfd_seek (abfd, off, SEEK_SET) != 0 | |
111 | || bfd_bread (&indexdef, sizeof (indexdef), abfd) != sizeof (indexdef)) | |
112 | return FALSE; | |
113 | ||
114 | /* Traverse it. */ | |
115 | used = bfd_getl16 (indexdef.used); | |
116 | for (i = 0; i < used;) | |
117 | { | |
118 | unsigned int idx_vbn; | |
119 | unsigned int idx_off; | |
120 | unsigned int keylen; | |
121 | unsigned char *keyname; | |
122 | unsigned char *ridx = (unsigned char *)&indexdef.keys[i]; | |
123 | unsigned int len; | |
124 | ||
125 | idx_vbn = bfd_getl32 (ridx); | |
126 | idx_off = bfd_getl16 (ridx + 4); | |
127 | ||
128 | /* Illegal value. */ | |
129 | if (idx_vbn == 0) | |
130 | return FALSE; | |
131 | ||
132 | /* Extract key length. */ | |
133 | if (bfd_libdata (abfd)->ver == 3) | |
134 | { | |
135 | keylen = ridx[6]; | |
136 | len = 7; | |
137 | } | |
138 | else if (bfd_libdata (abfd)->ver == 4) | |
139 | { | |
140 | keylen = bfd_getl16 (ridx + 6); | |
141 | len = 9; | |
142 | } | |
143 | else | |
144 | return FALSE; | |
145 | ||
146 | keyname = ridx + len; | |
147 | i += len + keylen; | |
148 | ||
149 | if (idx_off == RFADEF__C_INDEX) | |
150 | { | |
151 | /* Indirect entry. Recurse. */ | |
152 | if (!vms_traverse_index (abfd, idx_vbn, idx)) | |
153 | return FALSE; | |
154 | } | |
155 | else | |
156 | { | |
157 | /* Add a new entry. */ | |
158 | char *name; | |
159 | ||
160 | name = bfd_alloc (abfd, keylen + 1); | |
161 | if (name == NULL) | |
162 | return FALSE; | |
163 | memcpy (name, keyname, keylen); | |
164 | name[keylen] = 0; | |
165 | (*idx)->file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off; | |
166 | (*idx)->name = name; | |
167 | (*idx)++; | |
168 | } | |
169 | } | |
170 | ||
171 | return TRUE; | |
172 | } | |
173 | ||
174 | /* Read index #IDX, which must have NBREL entries. */ | |
175 | ||
176 | static struct carsym * | |
177 | vms_lib_read_index (bfd *abfd, int idx, unsigned int nbrel) | |
178 | { | |
179 | struct carsym *res; | |
180 | struct carsym *el; | |
181 | struct vms_idd idd; | |
182 | unsigned int flags; | |
183 | unsigned int vbn; | |
184 | ||
185 | /* Read index desription. */ | |
186 | if (bfd_seek (abfd, LHD_IDXDESC + idx * IDD_LENGTH, SEEK_SET) != 0 | |
187 | || bfd_bread (&idd, sizeof (idd), abfd) != sizeof (idd)) | |
188 | return NULL; | |
189 | ||
190 | /* Sanity checks. */ | |
191 | flags = bfd_getl16 (idd.flags); | |
192 | if (!(flags & IDD__FLAGS_ASCII) | |
193 | || !(flags & IDD__FLAGS_VARLENIDX)) | |
194 | return NULL; | |
195 | ||
196 | res = bfd_alloc (abfd, nbrel * sizeof (struct carsym)); | |
197 | if (res == NULL) | |
198 | return NULL; | |
199 | ||
200 | el = res; | |
201 | ||
202 | /* Note: if the index is empty, there is no block to traverse. */ | |
203 | vbn = bfd_getl32 (idd.vbn); | |
204 | if (vbn != 0 && !vms_traverse_index (abfd, vbn, &el)) | |
205 | { | |
206 | bfd_release (abfd, res); | |
207 | return NULL; | |
208 | } | |
209 | ||
210 | if ((unsigned int)(el - res) != nbrel) | |
211 | { | |
212 | /* Inconsistency between the number of modules declared and the number | |
213 | of modules found in the index. */ | |
214 | bfd_release (abfd, res); | |
215 | return NULL; | |
216 | } | |
217 | return res; | |
218 | } | |
219 | ||
220 | /* Standard function. */ | |
221 | ||
222 | static const bfd_target * | |
223 | _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) | |
224 | { | |
225 | struct vms_lhd lhd; | |
226 | unsigned int sanity; | |
227 | struct lib_tdata *tdata_hold; | |
228 | struct lib_tdata *tdata; | |
229 | unsigned int dcxvbn; | |
230 | ||
231 | /* Read header. */ | |
232 | if (bfd_bread (&lhd, sizeof (lhd), abfd) != sizeof (lhd)) | |
233 | { | |
234 | if (bfd_get_error () != bfd_error_system_call) | |
235 | bfd_set_error (bfd_error_wrong_format); | |
236 | return NULL; | |
237 | } | |
238 | ||
239 | /* Check sanity (= magic) number. */ | |
240 | sanity = bfd_getl32 (lhd.sanity); | |
241 | if (!(sanity == LHD_SANEID3 | |
242 | || sanity == LHD_SANEID4 | |
243 | || sanity == LHD_SANEID_DCX)) | |
244 | { | |
245 | bfd_set_error (bfd_error_wrong_format); | |
246 | return NULL; | |
247 | } | |
248 | ||
249 | /* Check archive kind. */ | |
250 | switch (kind) | |
251 | { | |
252 | case vms_lib_alpha: | |
253 | if ((lhd.type != LBR__C_TYP_EOBJ && lhd.type != LBR__C_TYP_ESHSTB) | |
254 | || bfd_getl32 (lhd.majorid) != 3 | |
255 | || lhd.nindex != 2) | |
256 | { | |
257 | bfd_set_error (bfd_error_wrong_format); | |
258 | return NULL; | |
259 | } | |
260 | break; | |
261 | case vms_lib_txt: | |
262 | if ((lhd.type != LBR__C_TYP_TXT | |
263 | && lhd.type != LBR__C_TYP_MLB | |
264 | && lhd.type != LBR__C_TYP_HLP) | |
265 | || bfd_getl32 (lhd.majorid) != 3 | |
266 | || lhd.nindex != 1) | |
267 | { | |
268 | bfd_set_error (bfd_error_wrong_format); | |
269 | return NULL; | |
270 | } | |
271 | break; | |
272 | default: | |
273 | abort (); | |
274 | } | |
275 | ||
276 | /* Allocate and initialize private data. */ | |
277 | tdata_hold = bfd_libdata (abfd); | |
278 | tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata)); | |
279 | if (tdata == NULL) | |
280 | return NULL; | |
281 | abfd->tdata.any = (void *)tdata; | |
282 | tdata->ver = bfd_getl32 (lhd.majorid); | |
283 | tdata->mhd_size = MHD__C_USRDAT + lhd.mhdusz; | |
284 | tdata->type = lhd.type; | |
285 | tdata->kind = kind; | |
286 | ||
287 | /* Read indexes. */ | |
288 | tdata->nbr_modules = bfd_getl32 (lhd.modcnt); | |
289 | tdata->nbr_syms = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules; | |
290 | tdata->modules = vms_lib_read_index (abfd, 0, tdata->nbr_modules); | |
291 | if (tdata->modules == NULL) | |
292 | goto err; | |
293 | if (lhd.nindex == 2) | |
294 | { | |
295 | tdata->syms = vms_lib_read_index (abfd, 1, tdata->nbr_syms); | |
296 | if (tdata->syms == NULL) | |
297 | goto err; | |
298 | } | |
299 | tdata->cache = bfd_zalloc (abfd, sizeof (bfd *) * tdata->nbr_modules); | |
300 | if (tdata->cache == NULL) | |
301 | goto err; | |
302 | ||
303 | /* Read DCX submaps. */ | |
304 | dcxvbn = bfd_getl32 (lhd.dcxmapvbn); | |
305 | if (dcxvbn != 0) | |
306 | { | |
307 | unsigned char buf_reclen[4]; | |
308 | unsigned int reclen; | |
309 | unsigned char *buf; | |
310 | struct vms_dcxmap *map; | |
311 | unsigned int sbm_off; | |
312 | unsigned int i; | |
313 | ||
314 | if (bfd_seek (abfd, (dcxvbn - 1) * VMS_BLOCK_SIZE, SEEK_SET) != 0 | |
315 | || bfd_bread (buf_reclen, sizeof (buf_reclen), abfd) | |
316 | != sizeof (buf_reclen)) | |
317 | goto err; | |
318 | reclen = bfd_getl32 (buf_reclen); | |
319 | buf = bfd_malloc (reclen); | |
320 | if (buf == NULL) | |
321 | goto err; | |
322 | if (bfd_bread (buf, reclen, abfd) != reclen) | |
323 | { | |
324 | free (buf); | |
325 | goto err; | |
326 | } | |
327 | map = (struct vms_dcxmap *)buf; | |
328 | tdata->nbr_dcxsbm = bfd_getl16 (map->nsubs); | |
329 | sbm_off = bfd_getl16 (map->sub0); | |
330 | tdata->dcxsbm = (struct dcxsbm_desc *)bfd_alloc | |
331 | (abfd, tdata->nbr_dcxsbm * sizeof (struct dcxsbm_desc)); | |
332 | for (i = 0; i < tdata->nbr_dcxsbm; i++) | |
333 | { | |
334 | struct vms_dcxsbm *sbm = (struct vms_dcxsbm *) (buf + sbm_off); | |
335 | struct dcxsbm_desc *sbmdesc = &tdata->dcxsbm[i]; | |
336 | unsigned int sbm_len; | |
337 | unsigned int sbm_sz; | |
338 | unsigned char *data = (unsigned char *)sbm; | |
339 | unsigned char *buf1; | |
340 | unsigned int l, j; | |
341 | ||
342 | sbm_sz = bfd_getl16 (sbm->size); | |
343 | sbm_off += sbm_sz; | |
344 | BFD_ASSERT (sbm_off <= reclen); | |
345 | ||
346 | sbmdesc->min_char = sbm->min_char; | |
347 | BFD_ASSERT (sbmdesc->min_char == 0); | |
348 | sbmdesc->max_char = sbm->max_char; | |
349 | sbm_len = sbmdesc->max_char - sbmdesc->min_char + 1; | |
350 | l = (2 * sbm_len + 7) / 8; | |
351 | BFD_ASSERT (sbm_sz >= sizeof (struct vms_dcxsbm) + l + 3 * sbm_len); | |
352 | sbmdesc->flags = (unsigned char *)bfd_alloc (abfd, l); | |
353 | memcpy (sbmdesc->flags, data + bfd_getl16 (sbm->flags), l); | |
354 | sbmdesc->nodes = (unsigned char *)bfd_alloc (abfd, 2 * sbm_len); | |
355 | memcpy (sbmdesc->nodes, data + bfd_getl16 (sbm->nodes), 2 * sbm_len); | |
356 | sbmdesc->next = (unsigned short *)bfd_alloc | |
357 | (abfd, sbm_len * sizeof (unsigned short)); | |
358 | buf1 = data + bfd_getl16 (sbm->next); | |
359 | for (j = 0; j < sbm_len; j++) | |
360 | sbmdesc->next[j] = bfd_getl16 (buf1 + j * 2); | |
361 | } | |
362 | free (buf); | |
363 | } | |
364 | else | |
365 | { | |
366 | tdata->nbr_dcxsbm = 0; | |
367 | } | |
368 | ||
369 | /* The map is always present. Also mark shared image library. */ | |
370 | abfd->has_armap = TRUE; | |
371 | if (tdata->type == LBR__C_TYP_ESHSTB) | |
372 | abfd->is_thin_archive = TRUE; | |
373 | ||
374 | return abfd->xvec; | |
375 | ||
376 | err: | |
377 | bfd_release (abfd, tdata); | |
378 | abfd->tdata.any = (void *)tdata_hold;; | |
379 | return NULL; | |
380 | } | |
381 | ||
382 | /* Standard function for alpha libraries. */ | |
383 | ||
384 | const bfd_target * | |
385 | _bfd_vms_lib_alpha_archive_p (bfd *abfd) | |
386 | { | |
387 | return _bfd_vms_lib_archive_p (abfd, vms_lib_alpha); | |
388 | } | |
389 | ||
390 | /* Standard function for text libraries. */ | |
391 | ||
392 | static const bfd_target * | |
393 | _bfd_vms_lib_txt_archive_p (bfd *abfd) | |
394 | { | |
395 | return _bfd_vms_lib_archive_p (abfd, vms_lib_txt); | |
396 | } | |
397 | ||
398 | /* Standard bfd function. */ | |
399 | ||
400 | bfd_boolean | |
401 | _bfd_vms_lib_mkarchive (bfd *abfd) | |
402 | { | |
403 | struct lib_tdata *tdata; | |
404 | ||
405 | tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata)); | |
406 | if (tdata == NULL) | |
407 | return FALSE; | |
408 | ||
409 | abfd->tdata.any = (void *)tdata; | |
410 | tdata->ver = 3; | |
411 | tdata->mhd_size = sizeof (struct vms_mhd); | |
412 | tdata->type = LBR__C_TYP_EOBJ; | |
413 | ||
414 | tdata->nbr_modules = 0; | |
415 | tdata->nbr_syms = 0; | |
416 | tdata->modules = NULL; | |
417 | tdata->syms = NULL; | |
418 | tdata->cache = NULL; | |
419 | ||
420 | return TRUE; | |
421 | } | |
422 | ||
423 | /* Find NAME in the symbol index. Return the index. */ | |
424 | ||
425 | symindex | |
426 | _bfd_vms_lib_find_symbol (bfd *abfd, const char *name) | |
427 | { | |
428 | struct lib_tdata *tdata = bfd_libdata (abfd); | |
429 | int lo, hi; | |
430 | ||
431 | /* Open-coded binary search for speed. */ | |
432 | lo = 0; | |
433 | hi = tdata->nbr_syms - 1; | |
434 | ||
435 | while (lo <= hi) | |
436 | { | |
437 | int mid = lo + (hi - lo) / 2; | |
438 | int diff; | |
439 | ||
440 | diff = (char)(name[0] - tdata->syms[mid].name[0]); | |
441 | if (diff == 0) | |
442 | diff = strcmp (name, tdata->syms[mid].name); | |
443 | if (diff == 0) | |
444 | return tdata->syms[mid].file_offset; | |
445 | else if (diff < 0) | |
446 | hi = mid - 1; | |
447 | else | |
448 | lo = mid + 1; | |
449 | } | |
450 | return 0; | |
451 | } | |
452 | ||
453 | /* IO vector for archive member. Need that because members are not linearly | |
454 | stored in archives. */ | |
455 | ||
456 | struct vms_lib_iovec | |
457 | { | |
458 | /* Current offset. */ | |
459 | ufile_ptr where; | |
460 | ||
461 | /* Length of the module, when known. */ | |
462 | ufile_ptr file_len; | |
463 | ||
464 | /* Current position in the record from bfd_bread point of view (ie, after | |
465 | decompression). 0 means that no data byte have been read, -2 and -1 | |
466 | are reserved for the length word. */ | |
467 | int rec_pos; | |
468 | #define REC_POS_NL -4 | |
469 | #define REC_POS_PAD -3 | |
470 | #define REC_POS_LEN0 -2 | |
471 | #define REC_POS_LEN1 -1 | |
472 | ||
473 | /* Record length. */ | |
474 | unsigned short rec_len; | |
475 | /* Number of bytes to read in the current record. */ | |
476 | unsigned short rec_rem; | |
477 | /* Offset of the next block. */ | |
478 | file_ptr next_block; | |
479 | /* Current *data* offset in the data block. */ | |
480 | unsigned short blk_off; | |
481 | ||
482 | /* Offset of the first block. Extracted from the index. */ | |
483 | file_ptr first_block; | |
484 | ||
485 | /* Initial next_block. Extracted when the MHD is read. */ | |
486 | file_ptr init_next_block; | |
487 | /* Initial blk_off, once the MHD is read. */ | |
488 | unsigned short init_blk_off; | |
489 | ||
490 | /* Used to store any 3 byte record, which could be the EOF pattern. */ | |
491 | unsigned char pattern[4]; | |
492 | ||
493 | /* DCX. */ | |
494 | struct dcxsbm_desc *dcxsbms; | |
495 | /* Current submap. */ | |
496 | struct dcxsbm_desc *dcx_sbm; | |
497 | /* Current offset in the submap. */ | |
498 | unsigned int dcx_offset; | |
499 | int dcx_pos; | |
500 | ||
501 | /* Compressed buffer. */ | |
502 | unsigned char *dcx_buf; | |
503 | /* Size of the buffer. Used to resize. */ | |
504 | unsigned int dcx_max; | |
505 | /* Number of valid bytes in the buffer. */ | |
506 | unsigned int dcx_rlen; | |
507 | }; | |
508 | ||
509 | /* Return the current position. */ | |
510 | ||
511 | static file_ptr | |
512 | vms_lib_btell (struct bfd *abfd) | |
513 | { | |
514 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
515 | return vec->where; | |
516 | } | |
517 | ||
518 | /* Read the header of the next data block if all bytes of the current block | |
519 | have been read. */ | |
520 | ||
521 | static bfd_boolean | |
522 | vms_lib_read_block (struct bfd *abfd) | |
523 | { | |
524 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
525 | ||
526 | if (vec->blk_off == DATA__LENGTH) | |
527 | { | |
528 | unsigned char hdr[DATA__DATA]; | |
529 | ||
530 | /* Read next block. */ | |
531 | if (bfd_seek (abfd->my_archive, vec->next_block, SEEK_SET) != 0) | |
532 | return FALSE; | |
533 | if (bfd_bread (hdr, sizeof (hdr), abfd->my_archive) != sizeof (hdr)) | |
534 | return FALSE; | |
535 | vec->next_block = (bfd_getl32 (hdr + 2) - 1) * VMS_BLOCK_SIZE; | |
536 | vec->blk_off = sizeof (hdr); | |
537 | } | |
538 | return TRUE; | |
539 | } | |
540 | ||
541 | /* Read NBYTES from ABFD into BUF if not NULL. If BUF is NULL, bytes are | |
542 | not stored. Read linearly from the library, but handle blocks. This | |
543 | function does not handle records nor EOF. */ | |
544 | ||
545 | static file_ptr | |
546 | vms_lib_bread_raw (struct bfd *abfd, void *buf, file_ptr nbytes) | |
547 | { | |
548 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
549 | file_ptr res; | |
550 | ||
551 | res = 0; | |
552 | while (nbytes > 0) | |
553 | { | |
554 | unsigned int l; | |
555 | ||
556 | /* Be sure the current data block is read. */ | |
557 | if (!vms_lib_read_block (abfd)) | |
558 | return -1; | |
559 | ||
560 | l = DATA__LENGTH - vec->blk_off; | |
561 | if (l > nbytes) | |
562 | l = nbytes; | |
563 | if (l == 0) | |
564 | return 0; | |
565 | if (buf != NULL) | |
566 | { | |
567 | if (bfd_bread (buf, l, abfd->my_archive) != l) | |
568 | return -1; | |
569 | } | |
570 | else | |
571 | { | |
572 | if (bfd_seek (abfd->my_archive, l, SEEK_CUR) != 0) | |
573 | return -1; | |
574 | } | |
575 | ||
576 | if (buf != NULL) | |
577 | buf += l; | |
578 | vec->blk_off += l; | |
579 | nbytes -= l; | |
580 | res += l; | |
581 | } | |
582 | return res; | |
583 | } | |
584 | ||
585 | /* Decompress NBYTES from VEC. Store the bytes into BUF if not NULL. */ | |
586 | ||
587 | static file_ptr | |
588 | vms_lib_dcx (struct vms_lib_iovec *vec, unsigned char *buf, file_ptr nbytes) | |
589 | { | |
590 | struct dcxsbm_desc *sbm; | |
591 | unsigned int i; | |
592 | unsigned int offset; | |
593 | unsigned int j; | |
594 | file_ptr res = 0; | |
595 | ||
596 | /* The loop below expect to deliver at least one byte. */ | |
597 | if (nbytes == 0) | |
598 | return 0; | |
599 | ||
600 | /* Get the current state. */ | |
601 | sbm = vec->dcx_sbm; | |
602 | offset = vec->dcx_offset; | |
603 | j = vec->dcx_pos & 7; | |
604 | ||
605 | for (i = vec->dcx_pos >> 3; i < vec->dcx_rlen; i++) | |
606 | { | |
607 | unsigned char b = vec->dcx_buf[i]; | |
608 | ||
609 | for (; j < 8; j++) | |
610 | { | |
611 | if (b & (1 << j)) | |
612 | offset++; | |
613 | if (!(sbm->flags[offset >> 3] & (1 << (offset & 7)))) | |
614 | { | |
615 | unsigned int n_offset = sbm->nodes[offset]; | |
616 | if (n_offset == 0) | |
617 | { | |
618 | /* End of buffer. Stay where we are. */ | |
619 | vec->dcx_pos = (i << 3) + j; | |
620 | if (b & (1 << j)) | |
621 | offset--; | |
622 | vec->dcx_offset = offset; | |
623 | vec->dcx_sbm = sbm; | |
624 | return res; | |
625 | } | |
626 | offset = 2 * n_offset; | |
627 | } | |
628 | else | |
629 | { | |
630 | unsigned char v = sbm->nodes[offset]; | |
631 | ||
632 | sbm = vec->dcxsbms + sbm->next[v]; | |
633 | offset = 0; | |
634 | res++; | |
635 | ||
636 | if (buf) | |
637 | { | |
638 | *buf++ = v; | |
639 | nbytes--; | |
640 | ||
641 | if (nbytes == 0) | |
642 | { | |
643 | vec->dcx_pos = (i << 3) + j + 1; | |
644 | vec->dcx_offset = offset; | |
645 | vec->dcx_sbm = sbm; | |
646 | ||
647 | return res; | |
648 | } | |
649 | } | |
650 | } | |
651 | } | |
652 | j = 0; | |
653 | } | |
654 | return -1; | |
655 | } | |
656 | ||
657 | /* Standard IOVEC function. */ | |
658 | ||
659 | static file_ptr | |
660 | vms_lib_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
661 | { | |
662 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
663 | file_ptr res; | |
664 | file_ptr chunk; | |
665 | ||
666 | /* Do not read past the end. */ | |
667 | if (vec->where >= vec->file_len) | |
668 | return 0; | |
669 | ||
670 | res = 0; | |
671 | while (nbytes > 0) | |
672 | { | |
673 | if (vec->rec_rem == 0) | |
674 | { | |
675 | unsigned char blen[2]; | |
676 | ||
677 | /* Read record length. */ | |
678 | if (vms_lib_bread_raw (abfd, &blen, sizeof (blen)) != sizeof (blen)) | |
679 | return -1; | |
680 | vec->rec_len = bfd_getl16 (blen); | |
681 | if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt) | |
682 | { | |
683 | /* Discard record size and align byte. */ | |
684 | vec->rec_pos = 0; | |
685 | vec->rec_rem = vec->rec_len; | |
686 | } | |
687 | else | |
688 | { | |
689 | /* Prepend record size. */ | |
690 | vec->rec_pos = REC_POS_LEN0; | |
691 | vec->rec_rem = (vec->rec_len + 1) & ~1; /* With align byte. */ | |
692 | } | |
693 | if (vec->rec_len == 3) | |
694 | { | |
695 | /* Possibly end of file. Check the pattern. */ | |
696 | if (vms_lib_bread_raw (abfd, vec->pattern, 4) != 4) | |
697 | return -1; | |
698 | if (!memcmp (vec->pattern, eotdesc + 2, 3)) | |
699 | { | |
700 | /* This is really an EOF. */ | |
701 | vec->where += res; | |
702 | vec->file_len = vec->where; | |
703 | return res; | |
704 | } | |
705 | } | |
706 | ||
707 | if (vec->dcxsbms != NULL) | |
708 | { | |
709 | /* This is a compressed member. */ | |
710 | unsigned int len; | |
711 | file_ptr elen; | |
712 | ||
713 | /* Be sure there is enough room for the expansion. */ | |
714 | len = (vec->rec_len + 1) & ~1; | |
715 | if (len > vec->dcx_max) | |
716 | { | |
717 | while (len > vec->dcx_max) | |
718 | vec->dcx_max *= 2; | |
719 | vec->dcx_buf = bfd_alloc (abfd, vec->dcx_max); | |
720 | if (vec->dcx_buf == NULL) | |
721 | return -1; | |
722 | } | |
723 | ||
724 | /* Read the compressed record. */ | |
725 | vec->dcx_rlen = len; | |
726 | if (vec->rec_len == 3) | |
727 | { | |
728 | /* Already read. */ | |
729 | memcpy (vec->dcx_buf, vec->pattern, 3); | |
730 | } | |
731 | else | |
732 | { | |
733 | elen = vms_lib_bread_raw (abfd, vec->dcx_buf, len); | |
734 | if (elen != len) | |
735 | return -1; | |
736 | } | |
737 | ||
738 | /* Dummy expansion to get the expanded length. */ | |
739 | vec->dcx_offset = 0; | |
740 | vec->dcx_sbm = vec->dcxsbms; | |
741 | vec->dcx_pos = 0; | |
742 | elen = vms_lib_dcx (vec, NULL, 0x10000); | |
743 | if (elen < 0) | |
744 | return -1; | |
745 | vec->rec_len = elen; | |
746 | vec->rec_rem = elen; | |
747 | ||
748 | /* Reset the state. */ | |
749 | vec->dcx_offset = 0; | |
750 | vec->dcx_sbm = vec->dcxsbms; | |
751 | vec->dcx_pos = 0; | |
752 | } | |
753 | } | |
754 | if (vec->rec_pos < 0) | |
755 | { | |
756 | unsigned char c; | |
757 | switch (vec->rec_pos) | |
758 | { | |
759 | case REC_POS_LEN0: | |
760 | c = vec->rec_len & 0xff; | |
761 | vec->rec_pos = REC_POS_LEN1; | |
762 | break; | |
763 | case REC_POS_LEN1: | |
764 | c = (vec->rec_len >> 8) & 0xff; | |
765 | vec->rec_pos = 0; | |
766 | break; | |
767 | case REC_POS_PAD: | |
768 | c = 0; | |
769 | vec->rec_rem = 0; | |
770 | break; | |
771 | case REC_POS_NL: | |
772 | c = '\n'; | |
773 | vec->rec_rem = 0; | |
774 | break; | |
775 | default: | |
776 | abort (); | |
777 | } | |
778 | if (buf != NULL) | |
779 | { | |
780 | *(unsigned char *)buf = c; | |
781 | buf++; | |
782 | } | |
783 | nbytes--; | |
784 | res++; | |
785 | continue; | |
786 | } | |
787 | ||
788 | if (nbytes > vec->rec_rem) | |
789 | chunk = vec->rec_rem; | |
790 | else | |
791 | chunk = nbytes; | |
792 | ||
793 | if (vec->dcxsbms != NULL) | |
794 | { | |
795 | /* Optimize the stat() case: no need to decompress again as we | |
796 | know the length. */ | |
797 | if (!(buf == NULL && chunk == vec->rec_rem)) | |
798 | chunk = vms_lib_dcx (vec, buf, chunk); | |
799 | } | |
800 | else | |
801 | { | |
802 | if (vec->rec_len == 3) | |
803 | { | |
804 | if (buf != NULL) | |
805 | memcpy (buf, vec->pattern + vec->rec_pos, chunk); | |
806 | } | |
807 | else | |
808 | chunk = vms_lib_bread_raw (abfd, buf, chunk); | |
809 | } | |
810 | if (chunk < 0) | |
811 | return -1; | |
812 | res += chunk; | |
813 | if (buf != NULL) | |
814 | buf += chunk; | |
815 | nbytes -= chunk; | |
816 | vec->rec_pos += chunk; | |
817 | vec->rec_rem -= chunk; | |
818 | ||
819 | if (vec->rec_rem == 0) | |
820 | { | |
821 | if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt) | |
822 | { | |
823 | if ((vec->rec_len & 1) == 1 | |
824 | && vec->rec_len != 3 | |
825 | && vec->dcxsbms == NULL) | |
826 | { | |
827 | /* Eat the pad byte. */ | |
828 | unsigned char pad; | |
829 | if (vms_lib_bread_raw (abfd, &pad, 1) != 1) | |
830 | return -1; | |
831 | } | |
832 | vec->rec_pos = REC_POS_NL; | |
833 | vec->rec_rem = 1; | |
834 | } | |
835 | else | |
836 | { | |
837 | if ((vec->rec_len & 1) == 1 && vec->dcxsbms != NULL) | |
838 | { | |
839 | vec->rec_pos = REC_POS_PAD; | |
840 | vec->rec_rem = 1; | |
841 | } | |
842 | } | |
843 | } | |
844 | } | |
845 | vec->where += res; | |
846 | return res; | |
847 | } | |
848 | ||
849 | /* Standard function, but we currently only handle the rewind case. */ | |
850 | ||
851 | static int | |
852 | vms_lib_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
853 | { | |
854 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
855 | ||
856 | if (whence == SEEK_SET && offset == 0) | |
857 | { | |
858 | vec->where = 0; | |
859 | vec->rec_rem = 0; | |
860 | vec->dcx_pos = -1; | |
861 | vec->blk_off = vec->init_blk_off; | |
862 | vec->next_block = vec->init_next_block; | |
863 | ||
864 | if (bfd_seek (abfd->my_archive, vec->first_block, SEEK_SET) != 0) | |
865 | return -1; | |
866 | } | |
867 | else | |
868 | abort (); | |
869 | return 0; | |
870 | } | |
871 | ||
872 | static file_ptr | |
873 | vms_lib_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
874 | const void *where ATTRIBUTE_UNUSED, | |
875 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
876 | { | |
877 | return -1; | |
878 | } | |
879 | ||
880 | static int | |
881 | vms_lib_bclose (struct bfd *abfd) | |
882 | { | |
883 | abfd->iostream = NULL; | |
884 | return 0; | |
885 | } | |
886 | ||
887 | static int | |
888 | vms_lib_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
889 | { | |
890 | return 0; | |
891 | } | |
892 | ||
893 | static int | |
894 | vms_lib_bstat (struct bfd *abfd ATTRIBUTE_UNUSED, | |
895 | struct stat *sb ATTRIBUTE_UNUSED) | |
896 | { | |
897 | /* Not supported. */ | |
898 | return 0; | |
899 | } | |
900 | ||
901 | static void * | |
902 | vms_lib_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED, | |
903 | void *addr ATTRIBUTE_UNUSED, | |
904 | bfd_size_type len ATTRIBUTE_UNUSED, | |
905 | int prot ATTRIBUTE_UNUSED, | |
906 | int flags ATTRIBUTE_UNUSED, | |
907 | file_ptr offset ATTRIBUTE_UNUSED) | |
908 | { | |
909 | return (void *) -1; | |
910 | } | |
911 | ||
912 | static const struct bfd_iovec vms_lib_iovec = { | |
913 | &vms_lib_bread, &vms_lib_bwrite, &vms_lib_btell, &vms_lib_bseek, | |
914 | &vms_lib_bclose, &vms_lib_bflush, &vms_lib_bstat, &vms_lib_bmmap | |
915 | }; | |
916 | ||
917 | /* Open a library module. FILEPOS is the position of the module header. */ | |
918 | ||
919 | static bfd_boolean | |
920 | vms_lib_bopen (bfd *el, file_ptr filepos) | |
921 | { | |
922 | struct vms_lib_iovec *vec; | |
923 | char buf[256]; | |
924 | struct vms_mhd *mhd; | |
925 | struct lib_tdata *tdata = bfd_libdata (el->my_archive); | |
926 | unsigned int len; | |
927 | ||
928 | /* Allocate and initialized the iovec. */ | |
929 | vec = bfd_zalloc (el, sizeof (*vec)); | |
930 | if (vec == NULL) | |
931 | return FALSE; | |
932 | ||
933 | el->iostream = vec; | |
934 | el->iovec = &vms_lib_iovec; | |
935 | ||
936 | /* File length is not known. */ | |
937 | vec->file_len = -1; | |
938 | ||
939 | /* Read the first data block. */ | |
940 | vec->next_block = filepos & ~(VMS_BLOCK_SIZE - 1); | |
941 | vec->blk_off = DATA__LENGTH; | |
942 | if (!vms_lib_read_block (el)) | |
943 | return FALSE; | |
944 | ||
945 | /* Prepare to read the first record. */ | |
946 | vec->blk_off = filepos & (VMS_BLOCK_SIZE - 1); | |
947 | vec->rec_rem = 0; | |
948 | if (bfd_seek (el->my_archive, filepos, SEEK_SET) != 0) | |
949 | return FALSE; | |
950 | ||
951 | /* Read Record length + MHD + align byte. */ | |
952 | len = tdata->mhd_size; | |
953 | if (vms_lib_bread_raw (el, buf, 2) != 2) | |
954 | return -1; | |
955 | if (bfd_getl16 (buf) != len) | |
956 | return -1; | |
957 | len = (len + 1) & ~1; | |
958 | BFD_ASSERT (len <= sizeof (buf)); | |
959 | if (vms_lib_bread_raw (el, buf, len) != len) | |
960 | return -1; | |
961 | ||
962 | /* Get info from mhd. */ | |
963 | mhd = (struct vms_mhd *)buf; | |
964 | if (len >= sizeof (struct vms_mhd)) | |
965 | el->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0; | |
966 | el->mtime = vms_rawtime_to_time_t (mhd->datim); | |
967 | el->mtime_set = TRUE; | |
968 | ||
969 | /* Reinit the iovec so that seek() will point to the first record after | |
970 | the mhd. */ | |
971 | vec->where = 0; | |
972 | vec->init_blk_off = vec->blk_off; | |
973 | vec->init_next_block = vec->next_block; | |
974 | vec->first_block = bfd_tell (el->my_archive); | |
975 | vec->dcxsbms = bfd_libdata (el->my_archive)->dcxsbm; | |
976 | ||
977 | if (vec->dcxsbms != NULL) | |
978 | { | |
979 | /* Handle DCX. */ | |
980 | vec->dcx_max = 10 * 1024; | |
981 | vec->dcx_buf = bfd_alloc (el, vec->dcx_max); | |
982 | vec->dcx_pos = -1; | |
983 | if (vec->dcx_buf == NULL) | |
984 | return -1; | |
985 | } | |
986 | return TRUE; | |
987 | } | |
988 | ||
989 | /* Standard function: get member at IDX. */ | |
990 | ||
991 | bfd * | |
992 | _bfd_vms_lib_get_elt_at_index (bfd *abfd, symindex idx) | |
993 | { | |
994 | struct lib_tdata *tdata = bfd_libdata (abfd); | |
995 | bfd *res; | |
996 | unsigned int i; | |
997 | ||
998 | /* Linear-scan. */ | |
999 | for (i = 0; i < tdata->nbr_modules; i++) | |
1000 | { | |
1001 | if (tdata->modules[i].file_offset == (file_ptr)idx) | |
1002 | break; | |
1003 | } | |
1004 | ||
1005 | /* Invalid index. */ | |
1006 | if (i >= tdata->nbr_modules) | |
1007 | return NULL; | |
1008 | ||
1009 | /* Already loaded. */ | |
1010 | if (tdata->cache[i]) | |
1011 | return tdata->cache[i]; | |
1012 | ||
1013 | /* Build it. */ | |
1014 | res = _bfd_create_empty_archive_element_shell (abfd); | |
1015 | if (!vms_lib_bopen (res, idx)) | |
1016 | return NULL; | |
1017 | res->filename = tdata->modules[i].name; | |
1018 | ||
1019 | tdata->cache[i] = res; | |
1020 | ||
1021 | return res; | |
1022 | } | |
1023 | ||
1024 | /* Elements of an imagelib are stubs. You can get the real image with this | |
1025 | function. */ | |
1026 | ||
1027 | bfd * | |
1028 | _bfd_vms_lib_get_imagelib_file (bfd *el) | |
1029 | { | |
1030 | bfd *archive = el->my_archive; | |
1031 | const char *modname = el->filename; | |
1032 | int modlen = strlen (modname); | |
1033 | char *filename; | |
1034 | int j; | |
1035 | bfd *res; | |
1036 | ||
1037 | /* Convert module name to lower case and append '.exe'. */ | |
1038 | filename = bfd_alloc (el, modlen + 5); | |
1039 | if (filename == NULL) | |
1040 | return NULL; | |
1041 | for (j = 0; j < modlen; j++) | |
1042 | if (ISALPHA (modname[j])) | |
1043 | filename[j] = TOLOWER (modname[j]); | |
1044 | else | |
1045 | filename[j] = modname[j]; | |
1046 | memcpy (filename + modlen, ".exe", 5); | |
1047 | ||
1048 | filename = _bfd_append_relative_path (archive, filename); | |
1049 | if (filename == NULL) | |
1050 | return NULL; | |
1051 | res = bfd_openr (filename, NULL); | |
1052 | ||
1053 | if (res == NULL) | |
1054 | { | |
1055 | (*_bfd_error_handler)(_("could not open shared image '%s' from '%s'"), | |
1056 | filename, archive->filename); | |
1057 | bfd_release (archive, filename); | |
1058 | return NULL; | |
1059 | } | |
1060 | ||
1061 | /* FIXME: put it in a cache ? */ | |
1062 | return res; | |
1063 | } | |
1064 | ||
1065 | /* Standard function. */ | |
1066 | ||
1067 | bfd * | |
1068 | _bfd_vms_lib_openr_next_archived_file (bfd *archive, | |
1069 | bfd *last_file) | |
1070 | { | |
1071 | unsigned int idx; | |
1072 | bfd *res; | |
1073 | ||
1074 | if (!last_file) | |
1075 | idx = 0; | |
1076 | else | |
1077 | idx = last_file->proxy_origin + 1; | |
1078 | ||
1079 | if (idx >= bfd_libdata (archive)->nbr_modules) | |
1080 | { | |
1081 | bfd_set_error (bfd_error_no_more_archived_files); | |
1082 | return NULL; | |
1083 | } | |
1084 | ||
1085 | res = _bfd_vms_lib_get_elt_at_index | |
1086 | (archive, bfd_libdata (archive)->modules[idx].file_offset); | |
1087 | if (res == NULL) | |
1088 | return res; | |
1089 | res->proxy_origin = idx; | |
1090 | return res; | |
1091 | } | |
1092 | ||
1093 | /* Standard function. Just compute the length. */ | |
1094 | ||
1095 | int | |
1096 | _bfd_vms_lib_generic_stat_arch_elt (bfd *abfd, struct stat *st) | |
1097 | { | |
1098 | struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; | |
1099 | ||
1100 | if (abfd->my_archive == NULL) | |
1101 | { | |
1102 | bfd_set_error (bfd_error_invalid_operation); | |
1103 | return -1; | |
1104 | } | |
1105 | ||
1106 | if (vec->file_len == (ufile_ptr)-1) | |
1107 | { | |
1108 | if (vms_lib_bseek (abfd, 0, SEEK_SET) != 0) | |
1109 | return -1; | |
1110 | ||
1111 | /* Compute length. */ | |
1112 | while (vms_lib_bread (abfd, NULL, 1 << 20) > 0) | |
1113 | ; | |
1114 | } | |
1115 | ||
1116 | st->st_size = vec->file_len; | |
1117 | if (abfd->mtime_set) | |
1118 | st->st_mtime = abfd->mtime; | |
1119 | else | |
1120 | st->st_mtime = 0; | |
1121 | st->st_uid = 0; | |
1122 | st->st_gid = 0; | |
1123 | st->st_mode = 0644; | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | /* Internal representation of an index entry. */ | |
1129 | ||
1130 | struct vms_index | |
1131 | { | |
1132 | /* Corresponding archive member. */ | |
1133 | bfd *abfd; | |
1134 | ||
1135 | /* Number of reference to this entry. */ | |
1136 | unsigned int ref; | |
1137 | ||
1138 | /* Length of the key. */ | |
1139 | unsigned short namlen; | |
1140 | ||
1141 | /* Key. */ | |
1142 | const char *name; | |
1143 | }; | |
1144 | ||
1145 | /* Used to sort index entries. */ | |
1146 | ||
1147 | static int | |
1148 | vms_index_cmp (const void *lv, const void *rv) | |
1149 | { | |
1150 | const struct vms_index *l = lv; | |
1151 | const struct vms_index *r = rv; | |
1152 | ||
1153 | return strcmp (l->name, r->name); | |
1154 | } | |
1155 | ||
1156 | /* Maximum number of index blocks level. */ | |
1157 | ||
1158 | #define MAX_LEVEL 10 | |
1159 | ||
1160 | /* Get the size of an index entry. */ | |
1161 | ||
1162 | static unsigned int | |
1163 | get_idxlen (struct vms_index *idx) | |
1164 | { | |
1165 | return 7 + idx->namlen; | |
1166 | } | |
1167 | ||
1168 | /* Write the index. VBN is the first vbn to be used, and will contain | |
1169 | on return the last vbn. | |
1170 | Return TRUE on success. */ | |
1171 | ||
1172 | static bfd_boolean | |
1173 | vms_write_index (bfd *abfd, | |
1174 | struct vms_index *idx, unsigned int nbr, unsigned int *vbn, | |
1175 | unsigned int *topvbn) | |
1176 | { | |
1177 | unsigned int i; | |
1178 | int j; | |
1179 | int level; | |
1180 | struct vms_indexdef *rblk[MAX_LEVEL]; | |
1181 | struct idxblk | |
1182 | { | |
1183 | unsigned int vbn; | |
1184 | unsigned short len; | |
1185 | unsigned short lastlen; | |
1186 | } blk[MAX_LEVEL]; | |
1187 | ||
1188 | if (nbr == 0) | |
1189 | { | |
1190 | if (topvbn != NULL) | |
1191 | *topvbn = 0; | |
1192 | return TRUE; | |
1193 | } | |
1194 | ||
1195 | if (abfd == NULL) | |
1196 | { | |
1197 | /* Sort the index the first time this function is called. */ | |
1198 | qsort (idx, nbr, sizeof (struct vms_index), vms_index_cmp); | |
1199 | } | |
1200 | ||
1201 | /* Allocate first index block. */ | |
1202 | level = 1; | |
1203 | if (abfd != NULL) | |
1204 | rblk[0] = bfd_malloc (sizeof (struct vms_indexdef)); | |
1205 | blk[0].vbn = (*vbn)++; | |
1206 | blk[0].len = 0; | |
1207 | blk[0].lastlen = 0; | |
1208 | ||
1209 | for (i = 0; i < nbr; i++, idx++) | |
1210 | { | |
1211 | unsigned int idxlen = get_idxlen (idx); | |
1212 | struct vms_idxdef *en; | |
1213 | int flush = 0; | |
1214 | ||
1215 | /* Check if a block might overflow. In this case we will flush this | |
1216 | block and all the blocks below it. */ | |
1217 | for (j = 0; j < level; j++) | |
1218 | if (blk[j].len + blk[j].lastlen + idxlen > INDEXDEF__BLKSIZ) | |
1219 | flush = j + 1; | |
1220 | ||
1221 | for (j = 0; j < level; j++) | |
1222 | { | |
1223 | if (j < flush) | |
1224 | { | |
1225 | /* There is not enough room to write the new entry in this | |
1226 | block or in a parent block. */ | |
1227 | ||
1228 | if (j + 1 == level) | |
1229 | { | |
1230 | BFD_ASSERT (level < MAX_LEVEL); | |
1231 | ||
1232 | /* Need to create a parent. */ | |
1233 | if (abfd != NULL) | |
1234 | { | |
1235 | rblk[level] = bfd_malloc (sizeof (struct vms_indexdef)); | |
1236 | bfd_putl32 (*vbn, rblk[j]->parent); | |
1237 | } | |
1238 | blk[level].vbn = (*vbn)++; | |
1239 | blk[level].len = 0; | |
1240 | blk[level].lastlen = 0; | |
1241 | ||
1242 | level++; | |
1243 | } | |
1244 | ||
1245 | /* Update parent block: write the new entry. */ | |
1246 | if (abfd != NULL) | |
1247 | { | |
1248 | en = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); | |
1249 | memcpy (rblk[j + 1]->keys + blk[j + 1].len, en, | |
1250 | blk[j].lastlen); | |
1251 | en = (struct vms_idxdef *) | |
1252 | (rblk[j + 1]->keys + blk[j + 1].len); | |
1253 | bfd_putl32 (blk[j].vbn, en->vbn); | |
1254 | bfd_putl16 (RFADEF__C_INDEX, en->offset); | |
1255 | } | |
1256 | ||
1257 | if (j + 1 == flush) | |
1258 | { | |
1259 | /* And allocate it. Do it only on the block that won't be | |
1260 | flushed (so that the parent of the parent can be | |
1261 | updated too). */ | |
1262 | blk[j + 1].len += blk[j].lastlen; | |
1263 | blk[j + 1].lastlen = 0; | |
1264 | } | |
1265 | ||
1266 | /* Write this block on the disk. */ | |
1267 | if (abfd != NULL) | |
1268 | { | |
1269 | bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used); | |
1270 | if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE, | |
1271 | SEEK_SET) != 0) | |
1272 | return FALSE; | |
1273 | if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd) | |
1274 | != sizeof (struct vms_indexdef)) | |
1275 | return FALSE; | |
1276 | } | |
1277 | ||
1278 | /* Reset this block. */ | |
1279 | blk[j].len = 0; | |
1280 | blk[j].lastlen = 0; | |
1281 | blk[j].vbn = (*vbn)++; | |
1282 | } | |
1283 | ||
1284 | /* Append it to the block. */ | |
1285 | if (j == 0) | |
1286 | { | |
1287 | blk[j].len += blk[j].lastlen; | |
1288 | ||
1289 | if (abfd != NULL) | |
1290 | { | |
1291 | en = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); | |
1292 | bfd_putl32 ((idx->abfd->proxy_origin / VMS_BLOCK_SIZE) + 1, | |
1293 | en->vbn); | |
1294 | bfd_putl16 | |
1295 | ((idx->abfd->proxy_origin % VMS_BLOCK_SIZE) + DATA__DATA, | |
1296 | en->offset); | |
1297 | en->keylen = idx->namlen; | |
1298 | memcpy (en->keyname, idx->name, idx->namlen); | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | blk[j].lastlen = idxlen; | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | if (topvbn != NULL) | |
1307 | *topvbn = blk[level - 1].vbn; | |
1308 | ||
1309 | if (abfd == NULL) | |
1310 | return TRUE; | |
1311 | ||
1312 | /* Flush. */ | |
1313 | for (j = 0; j < level; j++) | |
1314 | { | |
1315 | if (j > 0) | |
1316 | { | |
1317 | /* Update parent block: write the new entry. */ | |
1318 | struct vms_idxdef *en; | |
1319 | struct vms_idxdef *par; | |
1320 | ||
1321 | en = (struct vms_idxdef *)(rblk[j - 1]->keys + blk[j - 1].len); | |
1322 | par = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); | |
1323 | memcpy (par, en, blk[j - 1].lastlen); | |
1324 | bfd_putl32 (blk[j - 1].vbn, par->vbn); | |
1325 | bfd_putl16 (RFADEF__C_INDEX, par->offset); | |
1326 | } | |
1327 | ||
1328 | /* Write this block on the disk. */ | |
1329 | bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used); | |
1330 | if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE, | |
1331 | SEEK_SET) != 0) | |
1332 | return FALSE; | |
1333 | if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd) | |
1334 | != sizeof (struct vms_indexdef)) | |
1335 | return FALSE; | |
1336 | ||
1337 | free (rblk[j]); | |
1338 | } | |
1339 | ||
1340 | return TRUE; | |
1341 | } | |
1342 | ||
1343 | /* Append data to the data block DATA. Force write if PAD is true. */ | |
1344 | ||
1345 | static bfd_boolean | |
1346 | vms_write_data_block (bfd *arch, struct vms_datadef *data, file_ptr *off, | |
1347 | const unsigned char *buf, unsigned int len, int pad) | |
1348 | { | |
1349 | while (len > 0 || pad) | |
1350 | { | |
1351 | unsigned int doff = *off & (VMS_BLOCK_SIZE - 1); | |
1352 | unsigned int remlen = (DATA__LENGTH - DATA__DATA) - doff; | |
1353 | unsigned int l; | |
1354 | ||
1355 | l = (len > remlen) ? remlen : len; | |
1356 | memcpy (data->data + doff, buf, l); | |
1357 | buf += l; | |
1358 | len -= l; | |
1359 | doff += l; | |
1360 | *off += l; | |
1361 | ||
1362 | if (doff == (DATA__LENGTH - DATA__DATA) || (len == 0 && pad)) | |
1363 | { | |
1364 | data->recs = 0; | |
1365 | data->fill_1 = 0; | |
1366 | bfd_putl32 ((*off / VMS_BLOCK_SIZE) + 2, data->link); | |
1367 | ||
1368 | if (bfd_bwrite (data, sizeof (*data), arch) != sizeof (*data)) | |
1369 | return FALSE; | |
1370 | ||
1371 | *off += DATA__LENGTH - doff; | |
1372 | ||
1373 | if (len == 0) | |
1374 | break; | |
1375 | } | |
1376 | } | |
1377 | return TRUE; | |
1378 | } | |
1379 | ||
1380 | /* Build the symbols index. */ | |
1381 | ||
1382 | static bfd_boolean | |
1383 | _bfd_vms_lib_build_map (unsigned int nbr_modules, | |
1384 | struct vms_index *modules, | |
1385 | unsigned int *res_cnt, | |
1386 | struct vms_index **res) | |
1387 | { | |
1388 | unsigned int i; | |
1389 | asymbol **syms = NULL; | |
1390 | long syms_max = 0; | |
1391 | struct vms_index *map = NULL; | |
1392 | unsigned int map_max = 1024; /* Fine initial default. */ | |
1393 | unsigned int map_count = 0; | |
1394 | ||
1395 | map = (struct vms_index *) bfd_malloc (map_max * sizeof (struct vms_index)); | |
1396 | if (map == NULL) | |
1397 | goto error_return; | |
1398 | ||
1399 | /* Gather symbols. */ | |
1400 | for (i = 0; i < nbr_modules; i++) | |
1401 | { | |
1402 | long storage; | |
1403 | long symcount; | |
1404 | long src_count; | |
1405 | bfd *current = modules[i].abfd; | |
1406 | ||
1407 | if ((bfd_get_file_flags (current) & HAS_SYMS) == 0) | |
1408 | continue; | |
1409 | ||
1410 | storage = bfd_get_symtab_upper_bound (current); | |
1411 | if (storage < 0) | |
1412 | goto error_return; | |
1413 | ||
1414 | if (storage != 0) | |
1415 | { | |
1416 | if (storage > syms_max) | |
1417 | { | |
1418 | if (syms_max > 0) | |
1419 | free (syms); | |
1420 | syms_max = storage; | |
1421 | syms = (asymbol **) bfd_malloc (syms_max); | |
1422 | if (syms == NULL) | |
1423 | goto error_return; | |
1424 | } | |
1425 | symcount = bfd_canonicalize_symtab (current, syms); | |
1426 | if (symcount < 0) | |
1427 | goto error_return; | |
1428 | ||
1429 | /* Now map over all the symbols, picking out the ones we | |
1430 | want. */ | |
1431 | for (src_count = 0; src_count < symcount; src_count++) | |
1432 | { | |
1433 | flagword flags = (syms[src_count])->flags; | |
1434 | asection *sec = syms[src_count]->section; | |
1435 | ||
1436 | if ((flags & BSF_GLOBAL | |
1437 | || flags & BSF_WEAK | |
1438 | || flags & BSF_INDIRECT | |
1439 | || bfd_is_com_section (sec)) | |
1440 | && ! bfd_is_und_section (sec)) | |
1441 | { | |
1442 | struct vms_index *new_map; | |
1443 | ||
1444 | /* This symbol will go into the archive header. */ | |
1445 | if (map_count == map_max) | |
1446 | { | |
1447 | map_max *= 2; | |
1448 | new_map = (struct vms_index *) | |
1449 | bfd_realloc (map, map_max * sizeof (struct vms_index)); | |
1450 | if (new_map == NULL) | |
1451 | goto error_return; | |
1452 | map = new_map; | |
1453 | } | |
1454 | ||
1455 | map[map_count].abfd = current; | |
1456 | /* FIXME: check length. */ | |
1457 | map[map_count].namlen = strlen (syms[src_count]->name); | |
1458 | map[map_count].name = syms[src_count]->name; | |
1459 | map_count++; | |
1460 | modules[i].ref++; | |
1461 | } | |
1462 | } | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | *res_cnt = map_count; | |
1467 | *res = map; | |
1468 | return TRUE; | |
1469 | ||
1470 | error_return: | |
1471 | if (syms_max > 0) | |
1472 | free (syms); | |
1473 | if (map != NULL) | |
1474 | free (map); | |
1475 | return FALSE; | |
1476 | } | |
1477 | ||
1478 | /* Do the hard work: write an archive on the disk. */ | |
1479 | ||
1480 | bfd_boolean | |
1481 | _bfd_vms_lib_write_archive_contents (bfd *arch) | |
1482 | { | |
1483 | bfd *current; | |
1484 | unsigned int nbr_modules; | |
1485 | struct vms_index *modules; | |
1486 | unsigned int nbr_symbols; | |
1487 | struct vms_index *symbols; | |
1488 | struct lib_tdata *tdata = bfd_libdata (arch); | |
1489 | unsigned int i; | |
1490 | file_ptr off; | |
1491 | unsigned int nbr_mod_iblk; | |
1492 | unsigned int nbr_sym_iblk; | |
1493 | unsigned int vbn; | |
1494 | unsigned int mod_idx_vbn; | |
1495 | unsigned int sym_idx_vbn; | |
1496 | ||
1497 | /* Count the number of modules (and do a first sanity check). */ | |
1498 | nbr_modules = 0; | |
1499 | for (current = arch->archive_head; | |
1500 | current != NULL; | |
1501 | current = current->archive_next) | |
1502 | { | |
1503 | /* This check is checking the bfds for the objects we're reading | |
1504 | from (which are usually either an object file or archive on | |
1505 | disk), not the archive entries we're writing to. We don't | |
1506 | actually create bfds for the archive members, we just copy | |
1507 | them byte-wise when we write out the archive. */ | |
1508 | if (bfd_write_p (current) || !bfd_check_format (current, bfd_object)) | |
1509 | { | |
1510 | bfd_set_error (bfd_error_invalid_operation); | |
1511 | goto input_err; | |
1512 | } | |
1513 | ||
1514 | nbr_modules++; | |
1515 | } | |
1516 | ||
1517 | /* Build the modules list. */ | |
1518 | BFD_ASSERT (tdata->modules == NULL); | |
1519 | modules = bfd_alloc (arch, nbr_modules * sizeof (struct vms_index)); | |
1520 | if (modules == NULL) | |
1521 | return FALSE; | |
1522 | ||
1523 | for (current = arch->archive_head, i = 0; | |
1524 | current != NULL; | |
1525 | current = current->archive_next, i++) | |
1526 | { | |
1527 | int nl; | |
1528 | ||
1529 | modules[i].abfd = current; | |
1530 | modules[i].name = vms_get_module_name (current->filename, FALSE); | |
1531 | modules[i].ref = 1; | |
1532 | ||
1533 | /* FIXME: silently truncate long names ? */ | |
1534 | nl = strlen (modules[i].name); | |
1535 | modules[i].namlen = (nl > MAX_KEYLEN ? MAX_KEYLEN : nl); | |
1536 | } | |
1537 | ||
1538 | /* Create the module index. */ | |
1539 | vbn = 0; | |
1540 | if (!vms_write_index (NULL, modules, nbr_modules, &vbn, NULL)) | |
1541 | return FALSE; | |
1542 | nbr_mod_iblk = vbn; | |
1543 | ||
1544 | /* Create symbol index. */ | |
1545 | if (!_bfd_vms_lib_build_map (nbr_modules, modules, &nbr_symbols, &symbols)) | |
1546 | return FALSE; | |
1547 | ||
1548 | vbn = 0; | |
1549 | if (!vms_write_index (NULL, symbols, nbr_symbols, &vbn, NULL)) | |
1550 | return FALSE; | |
1551 | nbr_sym_iblk = vbn; | |
1552 | ||
1553 | /* Write modules and remember their position. */ | |
1554 | off = (1 + nbr_mod_iblk + nbr_sym_iblk) * VMS_BLOCK_SIZE; | |
1555 | ||
1556 | if (bfd_seek (arch, off, SEEK_SET) != 0) | |
1557 | return FALSE; | |
1558 | ||
1559 | for (i = 0; i < nbr_modules; i++) | |
1560 | { | |
1561 | struct vms_datadef data; | |
1562 | unsigned char blk[VMS_BLOCK_SIZE]; | |
1563 | struct vms_mhd *mhd; | |
1564 | unsigned int sz; | |
1565 | ||
1566 | current = modules[i].abfd; | |
1567 | current->proxy_origin = off; | |
1568 | ||
1569 | bfd_putl16 (sizeof (struct vms_mhd), blk); | |
1570 | mhd = (struct vms_mhd *)(blk + 2); | |
1571 | memset (mhd, 0, sizeof (struct vms_mhd)); | |
1572 | mhd->lbrflag = 0; | |
1573 | mhd->id = MHD__C_MHDID; | |
1574 | mhd->objidlng = 4; | |
1575 | memcpy (mhd->objid, "V1.0", 4); | |
1576 | bfd_putl32 (modules[i].ref, mhd->refcnt); | |
1577 | /* FIXME: datim. */ | |
1578 | ||
1579 | sz = (2 + sizeof (struct vms_mhd) + 1) & ~1; | |
1580 | if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0) | |
1581 | goto input_err; | |
1582 | ||
1583 | if (bfd_seek (current, 0, SEEK_SET) != 0) | |
1584 | goto input_err; | |
1585 | ||
1586 | while (1) | |
1587 | { | |
1588 | sz = bfd_bread (blk, sizeof (blk), current); | |
1589 | if (sz == 0) | |
1590 | break; | |
1591 | if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0) | |
1592 | goto input_err; | |
1593 | } | |
1594 | if (vms_write_data_block (arch, &data, &off, | |
1595 | eotdesc, sizeof (eotdesc), 1) < 0) | |
1596 | goto input_err; | |
1597 | } | |
1598 | ||
1599 | /* Write the indexes. */ | |
1600 | vbn = 2; | |
1601 | if (vms_write_index (arch, modules, nbr_modules, &vbn, &mod_idx_vbn) != TRUE) | |
1602 | return FALSE; | |
1603 | if (vms_write_index (arch, symbols, nbr_symbols, &vbn, &sym_idx_vbn) != TRUE) | |
1604 | return FALSE; | |
1605 | ||
1606 | /* Write libary header. */ | |
1607 | { | |
1608 | unsigned char blk[VMS_BLOCK_SIZE]; | |
1609 | struct vms_lhd *lhd = (struct vms_lhd *)blk; | |
1610 | struct vms_idd *idd = (struct vms_idd *)(blk + sizeof (*lhd)); | |
1611 | ||
1612 | memset (blk, 0, sizeof (blk)); | |
1613 | ||
1614 | lhd->type = LBR__C_TYP_EOBJ; | |
1615 | lhd->nindex = 2; | |
1616 | bfd_putl32 (LHD_SANEID3, lhd->sanity); | |
1617 | bfd_putl16 (3, lhd->majorid); | |
1618 | bfd_putl16 (0, lhd->minorid); | |
1619 | snprintf ((char *)lhd->lbrver + 1, sizeof (lhd->lbrver) - 1, | |
1620 | "GNU ar %u.%u.%u", | |
1621 | (unsigned)(BFD_VERSION / 100000000UL), | |
1622 | (unsigned)(BFD_VERSION / 1000000UL) % 100, | |
1623 | (unsigned)(BFD_VERSION / 10000UL) % 100); | |
1624 | lhd->lbrver[sizeof (lhd->lbrver) - 1] = 0; | |
1625 | lhd->lbrver[0] = strlen ((char *)lhd->lbrver + 1); | |
1626 | ||
1627 | /* FIXME. */ | |
1628 | bfd_putl64 (0, lhd->credat); | |
1629 | bfd_putl64 (0, lhd->updtim); | |
1630 | ||
1631 | lhd->mhdusz = sizeof (struct vms_mhd) - MHD__C_USRDAT; | |
1632 | ||
1633 | bfd_putl32 (nbr_modules + nbr_symbols, lhd->idxcnt); | |
1634 | bfd_putl32 (nbr_modules, lhd->modcnt); | |
1635 | bfd_putl32 (nbr_modules, lhd->modhdrs); | |
1636 | ||
1637 | bfd_putl32 (vbn - 1, lhd->hipreal); | |
1638 | bfd_putl32 (vbn - 1, lhd->hiprusd); | |
1639 | ||
1640 | /* First index (modules name). */ | |
1641 | bfd_putl16 (IDD__FLAGS_ASCII | IDD__FLAGS_VARLENIDX, idd->flags); | |
1642 | bfd_putl16 (MAX_KEYLEN, idd->keylen); | |
1643 | bfd_putl16 (mod_idx_vbn, idd->vbn); | |
1644 | idd++; | |
1645 | ||
1646 | /* Second index (symbols name). */ | |
1647 | bfd_putl16 (IDD__FLAGS_ASCII | IDD__FLAGS_VARLENIDX, idd->flags); | |
1648 | bfd_putl16 (MAX_KEYLEN, idd->keylen); | |
1649 | bfd_putl16 (sym_idx_vbn, idd->vbn); | |
1650 | idd++; | |
1651 | ||
1652 | if (bfd_seek (arch, 0, SEEK_SET) != 0) | |
1653 | return FALSE; | |
1654 | if (bfd_bwrite (blk, sizeof (blk), arch) != sizeof (blk)) | |
1655 | return FALSE; | |
1656 | } | |
1657 | ||
1658 | return TRUE; | |
1659 | ||
1660 | input_err: | |
1661 | bfd_set_error (bfd_error_on_input, current, bfd_get_error ()); | |
1662 | return FALSE; | |
1663 | } | |
1664 | ||
1665 | /* Add a target for text library. This costs almost nothing and is useful to | |
1666 | read VMS library on the host. */ | |
1667 | ||
1668 | const bfd_target vms_lib_txt_vec = | |
1669 | { | |
1670 | "vms-libtxt", /* Name. */ | |
1671 | bfd_target_unknown_flavour, | |
1672 | BFD_ENDIAN_UNKNOWN, /* byteorder */ | |
1673 | BFD_ENDIAN_UNKNOWN, /* header_byteorder */ | |
1674 | 0, /* Object flags. */ | |
1675 | 0, /* Sect flags. */ | |
1676 | 0, /* symbol_leading_char. */ | |
1677 | ' ', /* ar_pad_char. */ | |
1678 | 15, /* ar_max_namelen. */ | |
1679 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
1680 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
1681 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, | |
1682 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
1683 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
1684 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, | |
1685 | ||
1686 | {_bfd_dummy_target, _bfd_dummy_target, /* bfd_check_format. */ | |
1687 | _bfd_vms_lib_txt_archive_p, _bfd_dummy_target}, | |
1688 | {bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_set_format. */ | |
1689 | {bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_write_contents. */ | |
1690 | ||
1691 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), | |
1692 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
1693 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
1694 | BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib), | |
1695 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), | |
1696 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
1697 | BFD_JUMP_TABLE_WRITE (_bfd_nowrite), | |
1698 | BFD_JUMP_TABLE_LINK (_bfd_nolink), | |
1699 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
1700 | ||
1701 | NULL, | |
1702 | ||
1703 | (PTR) 0 | |
1704 | }; |