1 /* BFD back-end for VMS archive files.
3 Copyright 2010 Free Software Foundation, Inc.
4 Written by Tristan Gingold <gingold@adacore.com>, AdaCore.
6 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
26 #include "safe-ctype.h"
32 /* The standard VMS disk block size. */
33 #ifndef VMS_BLOCK_SIZE
34 #define VMS_BLOCK_SIZE 512
37 /* Maximum key length (which is also the maximum symbol length in archive). */
38 #define MAX_KEYLEN 129
44 unsigned char min_char;
45 unsigned char max_char;
51 /* Kind of library. Used to filter in archive_p. */
61 /* Back-end private data. */
65 /* Standard tdata for an archive. But we don't use many fields. */
66 struct artdata artdata;
71 /* Type of the archive. */
74 /* Kind of archive. Summary of its type. */
75 enum vms_lib_kind kind;
77 /* Total size of the mhd (element header). */
78 unsigned int mhd_size;
80 /* Vector of modules (archive elements), already sorted. */
81 unsigned int nbr_modules;
82 struct carsym *modules;
85 /* DCX (decompression) data. */
86 unsigned int nbr_dcxsbm;
87 struct dcxsbm_desc *dcxsbm;
90 #define bfd_libdata(bfd) ((struct lib_tdata *)((bfd)->tdata.any))
92 /* End-Of-Text pattern. This is a special record to mark the end of file. */
94 static const unsigned char eotdesc[] = { 0x03, 0x00, 0x77, 0x00, 0x77, 0x00 };
96 /* Describe the current state of carsym entries while building the archive
97 table of content. Things are simple with Alpha archives as the number
98 of entries is known, but with IA64 archives a entry can make a reference
99 to severals members. Therefore we must be able to extend the table on the
100 fly, but it should be allocated on the bfd - which doesn't support realloc.
101 To reduce the overhead, the table is initially allocated in the BFD's
102 objalloc and extended if necessary on the heap. In the later case, it
103 is finally copied to the BFD's objalloc so that it will automatically be
108 /* The table of content. */
111 /* Number of entries used in the table. */
114 /* Maximum number of entries. */
117 /* If true, the table was reallocated on the heap. If false, it is still
118 in the BFD's objalloc. */
119 bfd_boolean realloced;
122 /* Simply add a name to the index. */
125 vms_add_index (struct carsym_mem *cs, char *name,
126 unsigned int idx_vbn, unsigned int idx_off)
128 if (cs->nbr == cs->max)
132 cs->max = 2 * cs->max + 32;
136 n = bfd_malloc2 (cs->max, sizeof (struct carsym));
139 memcpy (n, cs->idx, cs->nbr * sizeof (struct carsym));
140 /* And unfortunately we can't free cs->idx. */
144 n = bfd_realloc_or_free (cs->idx, cs->nbr * sizeof (struct carsym));
149 cs->realloced = TRUE;
151 cs->idx[cs->nbr].file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
152 cs->idx[cs->nbr].name = name;
157 /* Follow all member of a lns list (pointed by RFA) and add indexes for
158 NAME. Return FALSE in case of error. */
161 vms_add_indexes_from_list (bfd *abfd, struct carsym_mem *cs, char *name,
170 vbn = bfd_getl32 (rfa->vbn);
175 off = (vbn - 1) * VMS_BLOCK_SIZE + bfd_getl16 (rfa->offset);
176 if (bfd_seek (abfd, off, SEEK_SET) != 0
177 || bfd_bread (&lns, sizeof (lns), abfd) != sizeof (lns))
180 if (!vms_add_index (cs, name,
181 bfd_getl32 (lns.modrfa.vbn),
182 bfd_getl16 (lns.modrfa.offset)))
189 /* Read index block VBN and put the entry in **IDX (which is updated).
190 If the entry is indirect, recurse. */
193 vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym_mem *cs)
195 struct vms_indexdef indexdef;
200 /* Read the index block. */
201 off = (vbn - 1) * VMS_BLOCK_SIZE;
202 if (bfd_seek (abfd, off, SEEK_SET) != 0
203 || bfd_bread (&indexdef, sizeof (indexdef), abfd) != sizeof (indexdef))
207 p = &indexdef.keys[0];
208 endp = p + bfd_getl16 (indexdef.used);
211 unsigned int idx_vbn;
212 unsigned int idx_off;
214 unsigned char *keyname;
217 /* Extract key length. */
218 if (bfd_libdata (abfd)->ver == LBR_MAJORID)
220 struct vms_idx *ridx = (struct vms_idx *)p;
222 idx_vbn = bfd_getl32 (ridx->rfa.vbn);
223 idx_off = bfd_getl16 (ridx->rfa.offset);
225 keylen = ridx->keylen;
227 keyname = ridx->keyname;
229 else if (bfd_libdata (abfd)->ver == LBR_ELFMAJORID)
231 struct vms_elfidx *ridx = (struct vms_elfidx *)p;
233 idx_vbn = bfd_getl32 (ridx->rfa.vbn);
234 idx_off = bfd_getl16 (ridx->rfa.offset);
236 keylen = bfd_getl16 (ridx->keylen);
238 keyname = ridx->keyname;
247 /* Long symbol names are not yet supported. */
248 if (flags & ELFIDX__SYMESC)
251 if (idx_off == RFADEF__C_INDEX)
253 /* Indirect entry. Recurse. */
254 if (!vms_traverse_index (abfd, idx_vbn, cs))
259 /* Add a new entry. */
262 name = bfd_alloc (abfd, keylen + 1);
265 memcpy (name, keyname, keylen);
268 if (flags & ELFIDX__LISTRFA)
273 off = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
274 if (bfd_seek (abfd, off, SEEK_SET) != 0
275 || bfd_bread (&lhs, sizeof (lhs), abfd) != sizeof (lhs))
278 /* FIXME: this adds extra entries that were not accounted. */
279 if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_g_rfa))
281 if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_wk_rfa))
283 if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_g_rfa))
285 if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_wk_rfa))
290 if (!vms_add_index (cs, name, idx_vbn, idx_off))
295 /* Point to the next index entry. */
296 p = keyname + keylen;
302 /* Read index #IDX, which must have NBREL entries. */
304 static struct carsym *
305 vms_lib_read_index (bfd *abfd, int idx, unsigned int *nbrel)
310 struct carsym *csbuf;
311 struct carsym_mem csm;
313 /* Read index desription. */
314 if (bfd_seek (abfd, LHD_IDXDESC + idx * IDD_LENGTH, SEEK_SET) != 0
315 || bfd_bread (&idd, sizeof (idd), abfd) != sizeof (idd))
319 flags = bfd_getl16 (idd.flags);
320 if (!(flags & IDD__FLAGS_ASCII)
321 || !(flags & IDD__FLAGS_VARLENIDX))
324 csbuf = bfd_alloc (abfd, *nbrel * sizeof (struct carsym));
330 csm.realloced = FALSE;
333 /* Note: if the index is empty, there is no block to traverse. */
334 vbn = bfd_getl32 (idd.vbn);
335 if (vbn != 0 && !vms_traverse_index (abfd, vbn, &csm))
337 if (csm.realloced && csm.idx != NULL)
340 /* Note: in case of error, we can free what was allocated on the
342 bfd_release (abfd, csbuf);
348 /* There are more entries than the first estimate. Allocate on
349 the BFD's objalloc. */
350 csbuf = bfd_alloc (abfd, csm.nbr * sizeof (struct carsym));
353 memcpy (csbuf, csm.idx, csm.nbr * sizeof (struct carsym));
360 /* Standard function. */
362 static const bfd_target *
363 _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind)
367 struct lib_tdata *tdata_hold;
368 struct lib_tdata *tdata;
370 unsigned int nbr_ent;
373 if (bfd_bread (&lhd, sizeof (lhd), abfd) != sizeof (lhd))
375 if (bfd_get_error () != bfd_error_system_call)
376 bfd_set_error (bfd_error_wrong_format);
380 /* Check sanity (= magic) number. */
381 sanity = bfd_getl32 (lhd.sanity);
382 if (!(sanity == LHD_SANEID3
383 || sanity == LHD_SANEID6
384 || sanity == LHD_SANEID_DCX))
386 bfd_set_error (bfd_error_wrong_format);
390 /* Check archive kind. */
394 if ((lhd.type != LBR__C_TYP_EOBJ && lhd.type != LBR__C_TYP_ESHSTB)
395 || bfd_getl32 (lhd.majorid) != 3
398 bfd_set_error (bfd_error_wrong_format);
403 if ((lhd.type != LBR__C_TYP_IOBJ && lhd.type != LBR__C_TYP_ISHSTB)
404 || bfd_getl32 (lhd.majorid) != 6
407 bfd_set_error (bfd_error_wrong_format);
412 if ((lhd.type != LBR__C_TYP_TXT
413 && lhd.type != LBR__C_TYP_MLB
414 && lhd.type != LBR__C_TYP_HLP)
415 || bfd_getl32 (lhd.majorid) != 3
418 bfd_set_error (bfd_error_wrong_format);
426 /* Allocate and initialize private data. */
427 tdata_hold = bfd_libdata (abfd);
428 tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata));
431 abfd->tdata.any = (void *)tdata;
432 tdata->ver = bfd_getl32 (lhd.majorid);
433 tdata->mhd_size = MHD__C_USRDAT + lhd.mhdusz;
434 tdata->type = lhd.type;
438 tdata->nbr_modules = bfd_getl32 (lhd.modcnt);
439 tdata->artdata.symdef_count = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules;
440 nbr_ent = tdata->nbr_modules;
441 tdata->modules = vms_lib_read_index (abfd, 0, &nbr_ent);
442 if (tdata->modules == NULL || nbr_ent != tdata->nbr_modules)
446 nbr_ent = tdata->artdata.symdef_count;
447 tdata->artdata.symdefs = vms_lib_read_index (abfd, 1, &nbr_ent);
448 if (tdata->artdata.symdefs == NULL)
450 /* Only IA64 archives may have more entries in the index that what
452 if (nbr_ent != tdata->artdata.symdef_count
453 && kind != vms_lib_ia64)
455 tdata->artdata.symdef_count = nbr_ent;
457 tdata->cache = bfd_zalloc (abfd, sizeof (bfd *) * tdata->nbr_modules);
458 if (tdata->cache == NULL)
461 /* Read DCX submaps. */
462 dcxvbn = bfd_getl32 (lhd.dcxmapvbn);
465 unsigned char buf_reclen[4];
468 struct vms_dcxmap *map;
469 unsigned int sbm_off;
472 if (bfd_seek (abfd, (dcxvbn - 1) * VMS_BLOCK_SIZE, SEEK_SET) != 0
473 || bfd_bread (buf_reclen, sizeof (buf_reclen), abfd)
474 != sizeof (buf_reclen))
476 reclen = bfd_getl32 (buf_reclen);
477 buf = bfd_malloc (reclen);
480 if (bfd_bread (buf, reclen, abfd) != reclen)
485 map = (struct vms_dcxmap *)buf;
486 tdata->nbr_dcxsbm = bfd_getl16 (map->nsubs);
487 sbm_off = bfd_getl16 (map->sub0);
488 tdata->dcxsbm = (struct dcxsbm_desc *)bfd_alloc
489 (abfd, tdata->nbr_dcxsbm * sizeof (struct dcxsbm_desc));
490 for (i = 0; i < tdata->nbr_dcxsbm; i++)
492 struct vms_dcxsbm *sbm = (struct vms_dcxsbm *) (buf + sbm_off);
493 struct dcxsbm_desc *sbmdesc = &tdata->dcxsbm[i];
494 unsigned int sbm_len;
496 unsigned char *data = (unsigned char *)sbm;
500 sbm_sz = bfd_getl16 (sbm->size);
502 BFD_ASSERT (sbm_off <= reclen);
504 sbmdesc->min_char = sbm->min_char;
505 BFD_ASSERT (sbmdesc->min_char == 0);
506 sbmdesc->max_char = sbm->max_char;
507 sbm_len = sbmdesc->max_char - sbmdesc->min_char + 1;
508 l = (2 * sbm_len + 7) / 8;
509 BFD_ASSERT (sbm_sz >= sizeof (struct vms_dcxsbm) + l + 3 * sbm_len);
510 sbmdesc->flags = (unsigned char *)bfd_alloc (abfd, l);
511 memcpy (sbmdesc->flags, data + bfd_getl16 (sbm->flags), l);
512 sbmdesc->nodes = (unsigned char *)bfd_alloc (abfd, 2 * sbm_len);
513 memcpy (sbmdesc->nodes, data + bfd_getl16 (sbm->nodes), 2 * sbm_len);
514 sbmdesc->next = (unsigned short *)bfd_alloc
515 (abfd, sbm_len * sizeof (unsigned short));
516 buf1 = data + bfd_getl16 (sbm->next);
517 for (j = 0; j < sbm_len; j++)
518 sbmdesc->next[j] = bfd_getl16 (buf1 + j * 2);
524 tdata->nbr_dcxsbm = 0;
527 /* The map is always present. Also mark shared image library. */
528 abfd->has_armap = TRUE;
529 if (tdata->type == LBR__C_TYP_ESHSTB || tdata->type == LBR__C_TYP_ISHSTB)
530 abfd->is_thin_archive = TRUE;
535 bfd_release (abfd, tdata);
536 abfd->tdata.any = (void *)tdata_hold;;
540 /* Standard function for alpha libraries. */
543 _bfd_vms_lib_alpha_archive_p (bfd *abfd)
545 return _bfd_vms_lib_archive_p (abfd, vms_lib_alpha);
548 /* Standard function for text libraries. */
550 static const bfd_target *
551 _bfd_vms_lib_txt_archive_p (bfd *abfd)
553 return _bfd_vms_lib_archive_p (abfd, vms_lib_txt);
556 /* Standard bfd function. */
559 _bfd_vms_lib_mkarchive (bfd *abfd)
561 struct lib_tdata *tdata;
563 tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata));
567 abfd->tdata.any = (void *)tdata;
569 tdata->mhd_size = sizeof (struct vms_mhd);
570 tdata->type = LBR__C_TYP_EOBJ;
572 tdata->nbr_modules = 0;
573 tdata->artdata.symdef_count = 0;
574 tdata->modules = NULL;
575 tdata->artdata.symdefs = NULL;
581 /* Find NAME in the symbol index. Return the index. */
584 _bfd_vms_lib_find_symbol (bfd *abfd, const char *name)
586 struct lib_tdata *tdata = bfd_libdata (abfd);
587 carsym *syms = tdata->artdata.symdefs;
590 /* Open-coded binary search for speed. */
592 hi = tdata->artdata.symdef_count - 1;
596 int mid = lo + (hi - lo) / 2;
599 diff = (char)(name[0] - syms[mid].name[0]);
601 diff = strcmp (name, syms[mid].name);
609 return BFD_NO_MORE_SYMBOLS;
612 /* IO vector for archive member. Need that because members are not linearly
613 stored in archives. */
617 /* Current offset. */
620 /* Length of the module, when known. */
623 /* Current position in the record from bfd_bread point of view (ie, after
624 decompression). 0 means that no data byte have been read, -2 and -1
625 are reserved for the length word. */
627 #define REC_POS_NL -4
628 #define REC_POS_PAD -3
629 #define REC_POS_LEN0 -2
630 #define REC_POS_LEN1 -1
633 unsigned short rec_len;
634 /* Number of bytes to read in the current record. */
635 unsigned short rec_rem;
636 /* Offset of the next block. */
638 /* Current *data* offset in the data block. */
639 unsigned short blk_off;
641 /* Offset of the first block. Extracted from the index. */
642 file_ptr first_block;
644 /* Initial next_block. Extracted when the MHD is read. */
645 file_ptr init_next_block;
646 /* Initial blk_off, once the MHD is read. */
647 unsigned short init_blk_off;
649 /* Used to store any 3 byte record, which could be the EOF pattern. */
650 unsigned char pattern[4];
653 struct dcxsbm_desc *dcxsbms;
654 /* Current submap. */
655 struct dcxsbm_desc *dcx_sbm;
656 /* Current offset in the submap. */
657 unsigned int dcx_offset;
660 /* Compressed buffer. */
661 unsigned char *dcx_buf;
662 /* Size of the buffer. Used to resize. */
663 unsigned int dcx_max;
664 /* Number of valid bytes in the buffer. */
665 unsigned int dcx_rlen;
668 /* Return the current position. */
671 vms_lib_btell (struct bfd *abfd)
673 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
677 /* Read the header of the next data block if all bytes of the current block
681 vms_lib_read_block (struct bfd *abfd)
683 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
685 if (vec->blk_off == DATA__LENGTH)
687 unsigned char hdr[DATA__DATA];
689 /* Read next block. */
690 if (bfd_seek (abfd->my_archive, vec->next_block, SEEK_SET) != 0)
692 if (bfd_bread (hdr, sizeof (hdr), abfd->my_archive) != sizeof (hdr))
694 vec->next_block = (bfd_getl32 (hdr + 2) - 1) * VMS_BLOCK_SIZE;
695 vec->blk_off = sizeof (hdr);
700 /* Read NBYTES from ABFD into BUF if not NULL. If BUF is NULL, bytes are
701 not stored. Read linearly from the library, but handle blocks. This
702 function does not handle records nor EOF. */
705 vms_lib_bread_raw (struct bfd *abfd, void *buf, file_ptr nbytes)
707 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
715 /* Be sure the current data block is read. */
716 if (!vms_lib_read_block (abfd))
719 /* Do not read past the data block, do not read more than requested. */
720 l = DATA__LENGTH - vec->blk_off;
727 /* Really read into BUF. */
728 if (bfd_bread (buf, l, abfd->my_archive) != l)
733 /* Make as if we are reading. */
734 if (bfd_seek (abfd->my_archive, l, SEEK_CUR) != 0)
747 /* Decompress NBYTES from VEC. Store the bytes into BUF if not NULL. */
750 vms_lib_dcx (struct vms_lib_iovec *vec, unsigned char *buf, file_ptr nbytes)
752 struct dcxsbm_desc *sbm;
758 /* The loop below expect to deliver at least one byte. */
762 /* Get the current state. */
764 offset = vec->dcx_offset;
765 j = vec->dcx_pos & 7;
767 for (i = vec->dcx_pos >> 3; i < vec->dcx_rlen; i++)
769 unsigned char b = vec->dcx_buf[i];
775 if (!(sbm->flags[offset >> 3] & (1 << (offset & 7))))
777 unsigned int n_offset = sbm->nodes[offset];
780 /* End of buffer. Stay where we are. */
781 vec->dcx_pos = (i << 3) + j;
784 vec->dcx_offset = offset;
788 offset = 2 * n_offset;
792 unsigned char v = sbm->nodes[offset];
794 sbm = vec->dcxsbms + sbm->next[v];
805 vec->dcx_pos = (i << 3) + j + 1;
806 vec->dcx_offset = offset;
819 /* Standard IOVEC function. */
822 vms_lib_bread (struct bfd *abfd, void *buf, file_ptr nbytes)
824 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
828 /* Do not read past the end. */
829 if (vec->where >= vec->file_len)
835 if (vec->rec_rem == 0)
837 unsigned char blen[2];
839 /* Read record length. */
840 if (vms_lib_bread_raw (abfd, &blen, sizeof (blen)) != sizeof (blen))
842 vec->rec_len = bfd_getl16 (blen);
843 if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt)
845 /* Discard record size and align byte. */
847 vec->rec_rem = vec->rec_len;
851 /* Prepend record size. */
852 vec->rec_pos = REC_POS_LEN0;
853 vec->rec_rem = (vec->rec_len + 1) & ~1; /* With align byte. */
855 if (vec->rec_len == 3)
857 /* Possibly end of file. Check the pattern. */
858 if (vms_lib_bread_raw (abfd, vec->pattern, 4) != 4)
860 if (!memcmp (vec->pattern, eotdesc + 2, 3))
862 /* This is really an EOF. */
864 vec->file_len = vec->where;
869 if (vec->dcxsbms != NULL)
871 /* This is a compressed member. */
875 /* Be sure there is enough room for the expansion. */
876 len = (vec->rec_len + 1) & ~1;
877 if (len > vec->dcx_max)
879 while (len > vec->dcx_max)
881 vec->dcx_buf = bfd_alloc (abfd, vec->dcx_max);
882 if (vec->dcx_buf == NULL)
886 /* Read the compressed record. */
888 if (vec->rec_len == 3)
891 memcpy (vec->dcx_buf, vec->pattern, 3);
895 elen = vms_lib_bread_raw (abfd, vec->dcx_buf, len);
900 /* Dummy expansion to get the expanded length. */
902 vec->dcx_sbm = vec->dcxsbms;
904 elen = vms_lib_dcx (vec, NULL, 0x10000);
910 /* Reset the state. */
912 vec->dcx_sbm = vec->dcxsbms;
916 if (vec->rec_pos < 0)
919 switch (vec->rec_pos)
922 c = vec->rec_len & 0xff;
923 vec->rec_pos = REC_POS_LEN1;
926 c = (vec->rec_len >> 8) & 0xff;
942 *(unsigned char *)buf = c;
950 if (nbytes > vec->rec_rem)
951 chunk = vec->rec_rem;
955 if (vec->dcxsbms != NULL)
957 /* Optimize the stat() case: no need to decompress again as we
959 if (!(buf == NULL && chunk == vec->rec_rem))
960 chunk = vms_lib_dcx (vec, buf, chunk);
964 if (vec->rec_len == 3)
967 memcpy (buf, vec->pattern + vec->rec_pos, chunk);
970 chunk = vms_lib_bread_raw (abfd, buf, chunk);
978 vec->rec_pos += chunk;
979 vec->rec_rem -= chunk;
981 if (vec->rec_rem == 0)
983 /* End of record reached. */
984 if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt)
986 if ((vec->rec_len & 1) == 1
988 && vec->dcxsbms == NULL)
990 /* Eat the pad byte. */
992 if (vms_lib_bread_raw (abfd, &pad, 1) != 1)
995 vec->rec_pos = REC_POS_NL;
1000 if ((vec->rec_len & 1) == 1 && vec->dcxsbms != NULL)
1002 vec->rec_pos = REC_POS_PAD;
1012 /* Standard function, but we currently only handle the rewind case. */
1015 vms_lib_bseek (struct bfd *abfd, file_ptr offset, int whence)
1017 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
1019 if (whence == SEEK_SET && offset == 0)
1024 vec->blk_off = vec->init_blk_off;
1025 vec->next_block = vec->init_next_block;
1027 if (bfd_seek (abfd->my_archive, vec->first_block, SEEK_SET) != 0)
1036 vms_lib_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED,
1037 const void *where ATTRIBUTE_UNUSED,
1038 file_ptr nbytes ATTRIBUTE_UNUSED)
1044 vms_lib_bclose (struct bfd *abfd)
1046 abfd->iostream = NULL;
1051 vms_lib_bflush (struct bfd *abfd ATTRIBUTE_UNUSED)
1057 vms_lib_bstat (struct bfd *abfd ATTRIBUTE_UNUSED,
1058 struct stat *sb ATTRIBUTE_UNUSED)
1060 /* Not supported. */
1065 vms_lib_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED,
1066 void *addr ATTRIBUTE_UNUSED,
1067 bfd_size_type len ATTRIBUTE_UNUSED,
1068 int prot ATTRIBUTE_UNUSED,
1069 int flags ATTRIBUTE_UNUSED,
1070 file_ptr offset ATTRIBUTE_UNUSED)
1075 static const struct bfd_iovec vms_lib_iovec = {
1076 &vms_lib_bread, &vms_lib_bwrite, &vms_lib_btell, &vms_lib_bseek,
1077 &vms_lib_bclose, &vms_lib_bflush, &vms_lib_bstat, &vms_lib_bmmap
1080 /* Open a library module. FILEPOS is the position of the module header. */
1083 vms_lib_bopen (bfd *el, file_ptr filepos)
1085 struct vms_lib_iovec *vec;
1087 struct vms_mhd *mhd;
1088 struct lib_tdata *tdata = bfd_libdata (el->my_archive);
1091 /* Allocate and initialized the iovec. */
1092 vec = bfd_zalloc (el, sizeof (*vec));
1097 el->iovec = &vms_lib_iovec;
1099 /* File length is not known. */
1102 /* Read the first data block. */
1103 vec->next_block = filepos & ~(VMS_BLOCK_SIZE - 1);
1104 vec->blk_off = DATA__LENGTH;
1105 if (!vms_lib_read_block (el))
1108 /* Prepare to read the first record. */
1109 vec->blk_off = filepos & (VMS_BLOCK_SIZE - 1);
1111 if (bfd_seek (el->my_archive, filepos, SEEK_SET) != 0)
1114 /* Read Record length + MHD + align byte. */
1115 len = tdata->mhd_size;
1116 if (vms_lib_bread_raw (el, buf, 2) != 2)
1118 if (bfd_getl16 (buf) != len)
1120 len = (len + 1) & ~1;
1121 BFD_ASSERT (len <= sizeof (buf));
1122 if (vms_lib_bread_raw (el, buf, len) != len)
1125 /* Get info from mhd. */
1126 mhd = (struct vms_mhd *)buf;
1128 if (mhd->id != MHD__C_MHDID)
1130 if (len >= sizeof (struct vms_mhd))
1131 el->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0;
1132 el->mtime = vms_rawtime_to_time_t (mhd->datim);
1133 el->mtime_set = TRUE;
1135 /* Reinit the iovec so that seek() will point to the first record after
1138 vec->init_blk_off = vec->blk_off;
1139 vec->init_next_block = vec->next_block;
1140 vec->first_block = bfd_tell (el->my_archive);
1141 vec->dcxsbms = bfd_libdata (el->my_archive)->dcxsbm;
1143 if (vec->dcxsbms != NULL)
1146 vec->dcx_max = 10 * 1024;
1147 vec->dcx_buf = bfd_alloc (el, vec->dcx_max);
1149 if (vec->dcx_buf == NULL)
1155 /* Get member MODIDX. Return NULL in case of error. */
1158 _bfd_vms_lib_get_module (bfd *abfd, unsigned int modidx)
1160 struct lib_tdata *tdata = bfd_libdata (abfd);
1165 if (modidx >= tdata->nbr_modules)
1168 /* Already loaded. */
1169 if (tdata->cache[modidx])
1170 return tdata->cache[modidx];
1173 file_off = tdata->modules[modidx].file_offset;
1174 if (tdata->type != LBR__C_TYP_IOBJ)
1176 res = _bfd_create_empty_archive_element_shell (abfd);
1180 /* Special reader to deal with data blocks. */
1181 if (!vms_lib_bopen (res, file_off))
1187 struct vms_mhd *mhd;
1188 struct areltdata *arelt;
1190 /* Sanity check. The MHD must be big enough to contain module size. */
1191 if (tdata->mhd_size < offsetof (struct vms_mhd, modsize) + 4)
1194 /* Read the MHD now. */
1195 if (bfd_seek (abfd, file_off, SEEK_SET) != 0)
1197 if (bfd_bread (buf, tdata->mhd_size, abfd) != tdata->mhd_size)
1200 res = _bfd_create_empty_archive_element_shell (abfd);
1203 arelt = bfd_zalloc (res, sizeof (*arelt));
1206 res->arelt_data = arelt;
1208 /* Get info from mhd. */
1209 mhd = (struct vms_mhd *)buf;
1210 if (mhd->id != MHD__C_MHDID)
1212 if (tdata->mhd_size >= offsetof (struct vms_mhd, objstat) + 1)
1213 res->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0;
1214 res->mtime = vms_rawtime_to_time_t (mhd->datim);
1215 res->mtime_set = TRUE;
1217 arelt->parsed_size = bfd_getl32 (mhd->modsize);
1219 /* No need for a special reader as members are stored linearly.
1220 Just skip the MHD. */
1221 res->origin = file_off + tdata->mhd_size;
1224 res->filename = tdata->modules[modidx].name;
1226 tdata->cache[modidx] = res;
1231 /* Standard function: get member at IDX. */
1234 _bfd_vms_lib_get_elt_at_index (bfd *abfd, symindex symidx)
1236 struct lib_tdata *tdata = bfd_libdata (abfd);
1238 unsigned int modidx;
1241 if (symidx > tdata->artdata.symdef_count)
1243 file_off = tdata->artdata.symdefs[symidx].file_offset;
1246 for (modidx = 0; modidx < tdata->nbr_modules; modidx++)
1248 if (tdata->modules[modidx].file_offset == file_off)
1251 if (modidx >= tdata->nbr_modules)
1254 return _bfd_vms_lib_get_module (abfd, modidx);
1257 /* Elements of an imagelib are stubs. You can get the real image with this
1261 _bfd_vms_lib_get_imagelib_file (bfd *el)
1263 bfd *archive = el->my_archive;
1264 const char *modname = el->filename;
1265 int modlen = strlen (modname);
1270 /* Convert module name to lower case and append '.exe'. */
1271 filename = bfd_alloc (el, modlen + 5);
1272 if (filename == NULL)
1274 for (j = 0; j < modlen; j++)
1275 if (ISALPHA (modname[j]))
1276 filename[j] = TOLOWER (modname[j]);
1278 filename[j] = modname[j];
1279 memcpy (filename + modlen, ".exe", 5);
1281 filename = _bfd_append_relative_path (archive, filename);
1282 if (filename == NULL)
1284 res = bfd_openr (filename, NULL);
1288 (*_bfd_error_handler)(_("could not open shared image '%s' from '%s'"),
1289 filename, archive->filename);
1290 bfd_release (archive, filename);
1294 /* FIXME: put it in a cache ? */
1298 /* Standard function. */
1301 _bfd_vms_lib_openr_next_archived_file (bfd *archive,
1310 idx = last_file->proxy_origin + 1;
1312 if (idx >= bfd_libdata (archive)->nbr_modules)
1314 bfd_set_error (bfd_error_no_more_archived_files);
1318 res = _bfd_vms_lib_get_module (archive, idx);
1321 res->proxy_origin = idx;
1325 /* Standard function. Just compute the length. */
1328 _bfd_vms_lib_generic_stat_arch_elt (bfd *abfd, struct stat *st)
1330 struct lib_tdata *tdata;
1333 if (abfd->my_archive == NULL)
1335 bfd_set_error (bfd_error_invalid_operation);
1339 tdata = bfd_libdata (abfd->my_archive);
1340 if (tdata->type != LBR__C_TYP_IOBJ)
1342 struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
1344 if (vec->file_len == (ufile_ptr)-1)
1346 if (vms_lib_bseek (abfd, 0, SEEK_SET) != 0)
1349 /* Compute length. */
1350 while (vms_lib_bread (abfd, NULL, 1 << 20) > 0)
1353 st->st_size = vec->file_len;
1357 st->st_size = ((struct areltdata *)abfd->arelt_data)->parsed_size;
1360 if (abfd->mtime_set)
1361 st->st_mtime = abfd->mtime;
1371 /* Internal representation of an index entry. */
1375 /* Corresponding archive member. */
1378 /* Number of reference to this entry. */
1381 /* Length of the key. */
1382 unsigned short namlen;
1388 /* Used to sort index entries. */
1391 vms_index_cmp (const void *lv, const void *rv)
1393 const struct vms_index *l = lv;
1394 const struct vms_index *r = rv;
1396 return strcmp (l->name, r->name);
1399 /* Maximum number of index blocks level. */
1401 #define MAX_LEVEL 10
1403 /* Get the size of an index entry. */
1406 get_idxlen (struct vms_index *idx)
1408 return 7 + idx->namlen;
1411 /* Write the index. VBN is the first vbn to be used, and will contain
1412 on return the last vbn.
1413 Return TRUE on success. */
1416 vms_write_index (bfd *abfd,
1417 struct vms_index *idx, unsigned int nbr, unsigned int *vbn,
1418 unsigned int *topvbn)
1423 struct vms_indexdef *rblk[MAX_LEVEL];
1428 unsigned short lastlen;
1440 /* Sort the index the first time this function is called. */
1441 qsort (idx, nbr, sizeof (struct vms_index), vms_index_cmp);
1444 /* Allocate first index block. */
1447 rblk[0] = bfd_malloc (sizeof (struct vms_indexdef));
1448 blk[0].vbn = (*vbn)++;
1452 for (i = 0; i < nbr; i++, idx++)
1454 unsigned int idxlen = get_idxlen (idx);
1458 /* Check if a block might overflow. In this case we will flush this
1459 block and all the blocks below it. */
1460 for (j = 0; j < level; j++)
1461 if (blk[j].len + blk[j].lastlen + idxlen > INDEXDEF__BLKSIZ)
1464 for (j = 0; j < level; j++)
1468 /* There is not enough room to write the new entry in this
1469 block or in a parent block. */
1473 BFD_ASSERT (level < MAX_LEVEL);
1475 /* Need to create a parent. */
1478 rblk[level] = bfd_malloc (sizeof (struct vms_indexdef));
1479 bfd_putl32 (*vbn, rblk[j]->parent);
1481 blk[level].vbn = (*vbn)++;
1483 blk[level].lastlen = 0;
1488 /* Update parent block: write the new entry. */
1491 en = (struct vms_idx *)(rblk[j]->keys + blk[j].len);
1492 memcpy (rblk[j + 1]->keys + blk[j + 1].len, en,
1494 en = (struct vms_idx *)(rblk[j + 1]->keys + blk[j + 1].len);
1495 bfd_putl32 (blk[j].vbn, en->rfa.vbn);
1496 bfd_putl16 (RFADEF__C_INDEX, en->rfa.offset);
1501 /* And allocate it. Do it only on the block that won't be
1502 flushed (so that the parent of the parent can be
1504 blk[j + 1].len += blk[j].lastlen;
1505 blk[j + 1].lastlen = 0;
1508 /* Write this block on the disk. */
1511 bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used);
1512 if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE,
1515 if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd)
1516 != sizeof (struct vms_indexdef))
1520 /* Reset this block. */
1523 blk[j].vbn = (*vbn)++;
1526 /* Append it to the block. */
1529 blk[j].len += blk[j].lastlen;
1533 en = (struct vms_idx *)(rblk[j]->keys + blk[j].len);
1534 bfd_putl32 ((idx->abfd->proxy_origin / VMS_BLOCK_SIZE) + 1,
1537 ((idx->abfd->proxy_origin % VMS_BLOCK_SIZE) + DATA__DATA,
1539 en->keylen = idx->namlen;
1540 memcpy (en->keyname, idx->name, idx->namlen);
1544 blk[j].lastlen = idxlen;
1549 *topvbn = blk[level - 1].vbn;
1555 for (j = 0; j < level; j++)
1559 /* Update parent block: write the new entry. */
1561 struct vms_idx *par;
1563 en = (struct vms_idx *)(rblk[j - 1]->keys + blk[j - 1].len);
1564 par = (struct vms_idx *)(rblk[j]->keys + blk[j].len);
1565 memcpy (par, en, blk[j - 1].lastlen);
1566 bfd_putl32 (blk[j - 1].vbn, par->rfa.vbn);
1567 bfd_putl16 (RFADEF__C_INDEX, par->rfa.offset);
1570 /* Write this block on the disk. */
1571 bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used);
1572 if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE,
1575 if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd)
1576 != sizeof (struct vms_indexdef))
1585 /* Append data to the data block DATA. Force write if PAD is true. */
1588 vms_write_data_block (bfd *arch, struct vms_datadef *data, file_ptr *off,
1589 const unsigned char *buf, unsigned int len, int pad)
1591 while (len > 0 || pad)
1593 unsigned int doff = *off & (VMS_BLOCK_SIZE - 1);
1594 unsigned int remlen = (DATA__LENGTH - DATA__DATA) - doff;
1597 l = (len > remlen) ? remlen : len;
1598 memcpy (data->data + doff, buf, l);
1604 if (doff == (DATA__LENGTH - DATA__DATA) || (len == 0 && pad))
1608 bfd_putl32 ((*off / VMS_BLOCK_SIZE) + 2, data->link);
1610 if (bfd_bwrite (data, sizeof (*data), arch) != sizeof (*data))
1613 *off += DATA__LENGTH - doff;
1622 /* Build the symbols index. */
1625 _bfd_vms_lib_build_map (unsigned int nbr_modules,
1626 struct vms_index *modules,
1627 unsigned int *res_cnt,
1628 struct vms_index **res)
1631 asymbol **syms = NULL;
1633 struct vms_index *map = NULL;
1634 unsigned int map_max = 1024; /* Fine initial default. */
1635 unsigned int map_count = 0;
1637 map = (struct vms_index *) bfd_malloc (map_max * sizeof (struct vms_index));
1641 /* Gather symbols. */
1642 for (i = 0; i < nbr_modules; i++)
1647 bfd *current = modules[i].abfd;
1649 if ((bfd_get_file_flags (current) & HAS_SYMS) == 0)
1652 storage = bfd_get_symtab_upper_bound (current);
1658 if (storage > syms_max)
1663 syms = (asymbol **) bfd_malloc (syms_max);
1667 symcount = bfd_canonicalize_symtab (current, syms);
1671 /* Now map over all the symbols, picking out the ones we
1673 for (src_count = 0; src_count < symcount; src_count++)
1675 flagword flags = (syms[src_count])->flags;
1676 asection *sec = syms[src_count]->section;
1678 if ((flags & BSF_GLOBAL
1680 || flags & BSF_INDIRECT
1681 || bfd_is_com_section (sec))
1682 && ! bfd_is_und_section (sec))
1684 struct vms_index *new_map;
1686 /* This symbol will go into the archive header. */
1687 if (map_count == map_max)
1690 new_map = (struct vms_index *)
1691 bfd_realloc (map, map_max * sizeof (struct vms_index));
1692 if (new_map == NULL)
1697 map[map_count].abfd = current;
1698 /* FIXME: check length. */
1699 map[map_count].namlen = strlen (syms[src_count]->name);
1700 map[map_count].name = syms[src_count]->name;
1708 *res_cnt = map_count;
1720 /* Do the hard work: write an archive on the disk. */
1723 _bfd_vms_lib_write_archive_contents (bfd *arch)
1726 unsigned int nbr_modules;
1727 struct vms_index *modules;
1728 unsigned int nbr_symbols;
1729 struct vms_index *symbols;
1730 struct lib_tdata *tdata = bfd_libdata (arch);
1733 unsigned int nbr_mod_iblk;
1734 unsigned int nbr_sym_iblk;
1736 unsigned int mod_idx_vbn;
1737 unsigned int sym_idx_vbn;
1739 /* Count the number of modules (and do a first sanity check). */
1741 for (current = arch->archive_head;
1743 current = current->archive_next)
1745 /* This check is checking the bfds for the objects we're reading
1746 from (which are usually either an object file or archive on
1747 disk), not the archive entries we're writing to. We don't
1748 actually create bfds for the archive members, we just copy
1749 them byte-wise when we write out the archive. */
1750 if (bfd_write_p (current) || !bfd_check_format (current, bfd_object))
1752 bfd_set_error (bfd_error_invalid_operation);
1759 /* Build the modules list. */
1760 BFD_ASSERT (tdata->modules == NULL);
1761 modules = bfd_alloc (arch, nbr_modules * sizeof (struct vms_index));
1762 if (modules == NULL)
1765 for (current = arch->archive_head, i = 0;
1767 current = current->archive_next, i++)
1771 modules[i].abfd = current;
1772 modules[i].name = vms_get_module_name (current->filename, FALSE);
1775 /* FIXME: silently truncate long names ? */
1776 nl = strlen (modules[i].name);
1777 modules[i].namlen = (nl > MAX_KEYLEN ? MAX_KEYLEN : nl);
1780 /* Create the module index. */
1782 if (!vms_write_index (NULL, modules, nbr_modules, &vbn, NULL))
1786 /* Create symbol index. */
1787 if (!_bfd_vms_lib_build_map (nbr_modules, modules, &nbr_symbols, &symbols))
1791 if (!vms_write_index (NULL, symbols, nbr_symbols, &vbn, NULL))
1795 /* Write modules and remember their position. */
1796 off = (1 + nbr_mod_iblk + nbr_sym_iblk) * VMS_BLOCK_SIZE;
1798 if (bfd_seek (arch, off, SEEK_SET) != 0)
1801 for (i = 0; i < nbr_modules; i++)
1803 struct vms_datadef data;
1804 unsigned char blk[VMS_BLOCK_SIZE];
1805 struct vms_mhd *mhd;
1808 current = modules[i].abfd;
1809 current->proxy_origin = off;
1811 bfd_putl16 (sizeof (struct vms_mhd), blk);
1812 mhd = (struct vms_mhd *)(blk + 2);
1813 memset (mhd, 0, sizeof (struct vms_mhd));
1815 mhd->id = MHD__C_MHDID;
1817 memcpy (mhd->objid, "V1.0", 4);
1818 bfd_putl32 (modules[i].ref, mhd->refcnt);
1821 sz = (2 + sizeof (struct vms_mhd) + 1) & ~1;
1822 if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0)
1825 if (bfd_seek (current, 0, SEEK_SET) != 0)
1830 sz = bfd_bread (blk, sizeof (blk), current);
1833 if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0)
1836 if (vms_write_data_block (arch, &data, &off,
1837 eotdesc, sizeof (eotdesc), 1) < 0)
1841 /* Write the indexes. */
1843 if (vms_write_index (arch, modules, nbr_modules, &vbn, &mod_idx_vbn) != TRUE)
1845 if (vms_write_index (arch, symbols, nbr_symbols, &vbn, &sym_idx_vbn) != TRUE)
1848 /* Write libary header. */
1850 unsigned char blk[VMS_BLOCK_SIZE];
1851 struct vms_lhd *lhd = (struct vms_lhd *)blk;
1852 struct vms_idd *idd = (struct vms_idd *)(blk + sizeof (*lhd));
1853 unsigned int idd_flags;
1855 memset (blk, 0, sizeof (blk));
1857 lhd->type = LBR__C_TYP_EOBJ;
1859 bfd_putl32 (LHD_SANEID3, lhd->sanity);
1860 bfd_putl16 (3, lhd->majorid);
1861 bfd_putl16 (0, lhd->minorid);
1862 snprintf ((char *)lhd->lbrver + 1, sizeof (lhd->lbrver) - 1,
1864 (unsigned)(BFD_VERSION / 100000000UL),
1865 (unsigned)(BFD_VERSION / 1000000UL) % 100,
1866 (unsigned)(BFD_VERSION / 10000UL) % 100);
1867 lhd->lbrver[sizeof (lhd->lbrver) - 1] = 0;
1868 lhd->lbrver[0] = strlen ((char *)lhd->lbrver + 1);
1871 bfd_putl64 (0, lhd->credat);
1872 bfd_putl64 (0, lhd->updtim);
1874 lhd->mhdusz = sizeof (struct vms_mhd) - MHD__C_USRDAT;
1876 bfd_putl32 (nbr_modules + nbr_symbols, lhd->idxcnt);
1877 bfd_putl32 (nbr_modules, lhd->modcnt);
1878 bfd_putl32 (nbr_modules, lhd->modhdrs);
1880 bfd_putl32 (vbn - 1, lhd->hipreal);
1881 bfd_putl32 (vbn - 1, lhd->hiprusd);
1883 /* First index (modules name). */
1884 idd_flags = IDD__FLAGS_ASCII | IDD__FLAGS_VARLENIDX
1885 | IDD__FLAGS_NOCASECMP | IDD__FLAGS_NOCASENTR;
1886 bfd_putl16 (idd_flags, idd->flags);
1887 bfd_putl16 (MAX_KEYLEN, idd->keylen);
1888 bfd_putl16 (mod_idx_vbn, idd->vbn);
1891 /* Second index (symbols name). */
1892 bfd_putl16 (idd_flags, idd->flags);
1893 bfd_putl16 (MAX_KEYLEN, idd->keylen);
1894 bfd_putl16 (sym_idx_vbn, idd->vbn);
1897 if (bfd_seek (arch, 0, SEEK_SET) != 0)
1899 if (bfd_bwrite (blk, sizeof (blk), arch) != sizeof (blk))
1906 bfd_set_error (bfd_error_on_input, current, bfd_get_error ());
1910 /* Add a target for text library. This costs almost nothing and is useful to
1911 read VMS library on the host. */
1913 const bfd_target vms_lib_txt_vec =
1915 "vms-libtxt", /* Name. */
1916 bfd_target_unknown_flavour,
1917 BFD_ENDIAN_UNKNOWN, /* byteorder */
1918 BFD_ENDIAN_UNKNOWN, /* header_byteorder */
1919 0, /* Object flags. */
1920 0, /* Sect flags. */
1921 0, /* symbol_leading_char. */
1922 ' ', /* ar_pad_char. */
1923 15, /* ar_max_namelen. */
1924 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
1925 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
1926 bfd_getl16, bfd_getl_signed_16, bfd_putl16,
1927 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
1928 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
1929 bfd_getl16, bfd_getl_signed_16, bfd_putl16,
1931 {_bfd_dummy_target, _bfd_dummy_target, /* bfd_check_format. */
1932 _bfd_vms_lib_txt_archive_p, _bfd_dummy_target},
1933 {bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_set_format. */
1934 {bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_write_contents. */
1936 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
1937 BFD_JUMP_TABLE_COPY (_bfd_generic),
1938 BFD_JUMP_TABLE_CORE (_bfd_nocore),
1939 BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib),
1940 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
1941 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1942 BFD_JUMP_TABLE_WRITE (_bfd_nowrite),
1943 BFD_JUMP_TABLE_LINK (_bfd_nolink),
1944 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),