diff options
Diffstat (limited to 'bfd/vms-lib.c')
| -rw-r--r-- | bfd/vms-lib.c | 450 |
1 files changed, 344 insertions, 106 deletions
diff --git a/bfd/vms-lib.c b/bfd/vms-lib.c index d05fab70818..fcfdf0fd932 100644 --- a/bfd/vms-lib.c +++ b/bfd/vms-lib.c @@ -62,6 +62,9 @@ enum vms_lib_kind struct lib_tdata { + /* Standard tdata for an archive. But we don't use many fields. */ + struct artdata artdata; + /* Major version. */ unsigned char ver; @@ -79,10 +82,6 @@ struct lib_tdata struct carsym *modules; bfd **cache; - /* Vector of symbols (archive map), already sorted. */ - unsigned int nbr_syms; - struct carsym *syms; - /* DCX (decompression) data. */ unsigned int nbr_dcxsbm; struct dcxsbm_desc *dcxsbm; @@ -94,16 +93,109 @@ struct lib_tdata static const unsigned char eotdesc[] = { 0x03, 0x00, 0x77, 0x00, 0x77, 0x00 }; +/* Describe the current state of carsym entries while building the archive + table of content. Things are simple with Alpha archives as the number + of entries is known, but with IA64 archives a entry can make a reference + to severals members. Therefore we must be able to extend the table on the + fly, but it should be allocated on the bfd - which doesn't support realloc. + To reduce the overhead, the table is initially allocated in the BFD's + objalloc and extended if necessary on the heap. In the later case, it + is finally copied to the BFD's objalloc so that it will automatically be + freed. */ + +struct carsym_mem +{ + /* The table of content. */ + struct carsym *idx; + + /* Number of entries used in the table. */ + unsigned int nbr; + + /* Maximum number of entries. */ + unsigned int max; + + /* If true, the table was reallocated on the heap. If false, it is still + in the BFD's objalloc. */ + bfd_boolean realloced; +}; + +/* Simply add a name to the index. */ + +static bfd_boolean +vms_add_index (struct carsym_mem *cs, char *name, + unsigned int idx_vbn, unsigned int idx_off) +{ + if (cs->nbr == cs->max) + { + struct carsym *n; + + cs->max = 2 * cs->max + 32; + + if (!cs->realloced) + { + n = bfd_malloc2 (cs->max, sizeof (struct carsym)); + if (n == NULL) + return FALSE; + memcpy (n, cs->idx, cs->nbr * sizeof (struct carsym)); + /* And unfortunately we can't free cs->idx. */ + } + else + { + n = bfd_realloc_or_free (cs->idx, cs->nbr * sizeof (struct carsym)); + if (n == NULL) + return FALSE; + } + cs->idx = n; + cs->realloced = TRUE; + } + cs->idx[cs->nbr].file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off; + cs->idx[cs->nbr].name = name; + cs->nbr++; + return TRUE; +} + +/* Follow all member of a lns list (pointed by RFA) and add indexes for + NAME. Return FALSE in case of error. */ + +static bfd_boolean +vms_add_indexes_from_list (bfd *abfd, struct carsym_mem *cs, char *name, + struct vms_rfa *rfa) +{ + struct vms_lns lns; + unsigned int vbn; + file_ptr off; + + while (1) + { + vbn = bfd_getl32 (rfa->vbn); + if (vbn == 0) + return TRUE; + + /* Read the LHS. */ + off = (vbn - 1) * VMS_BLOCK_SIZE + bfd_getl16 (rfa->offset); + if (bfd_seek (abfd, off, SEEK_SET) != 0 + || bfd_bread (&lns, sizeof (lns), abfd) != sizeof (lns)) + return FALSE; + + if (!vms_add_index (cs, name, + bfd_getl32 (lns.modrfa.vbn), + bfd_getl16 (lns.modrfa.offset))) + return FALSE; + + rfa = &lns.nxtrfa; + } +} + /* Read index block VBN and put the entry in **IDX (which is updated). If the entry is indirect, recurse. */ static bfd_boolean -vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym **idx) +vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym_mem *cs) { struct vms_indexdef indexdef; - unsigned int used; file_ptr off; - unsigned int i; + unsigned char *p; + unsigned char *endp; /* Read the index block. */ off = (vbn - 1) * VMS_BLOCK_SIZE; @@ -112,44 +204,54 @@ vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym **idx) return FALSE; /* Traverse it. */ - used = bfd_getl16 (indexdef.used); - for (i = 0; i < used;) + p = &indexdef.keys[0]; + endp = p + bfd_getl16 (indexdef.used); + while (p < endp) { unsigned int idx_vbn; unsigned int idx_off; unsigned int keylen; unsigned char *keyname; - unsigned char *ridx = (unsigned char *)&indexdef.keys[i]; - unsigned int len; - - idx_vbn = bfd_getl32 (ridx); - idx_off = bfd_getl16 (ridx + 4); - - /* Illegal value. */ - if (idx_vbn == 0) - return FALSE; + unsigned int flags; /* Extract key length. */ - if (bfd_libdata (abfd)->ver == 3) + if (bfd_libdata (abfd)->ver == LBR_MAJORID) { - keylen = ridx[6]; - len = 7; + struct vms_idx *ridx = (struct vms_idx *)p; + + idx_vbn = bfd_getl32 (ridx->rfa.vbn); + idx_off = bfd_getl16 (ridx->rfa.offset); + + keylen = ridx->keylen; + flags = 0; + keyname = ridx->keyname; } - else if (bfd_libdata (abfd)->ver == 4) + else if (bfd_libdata (abfd)->ver == LBR_ELFMAJORID) { - keylen = bfd_getl16 (ridx + 6); - len = 9; + struct vms_elfidx *ridx = (struct vms_elfidx *)p; + + idx_vbn = bfd_getl32 (ridx->rfa.vbn); + idx_off = bfd_getl16 (ridx->rfa.offset); + + keylen = bfd_getl16 (ridx->keylen); + flags = ridx->flags; + keyname = ridx->keyname; } else return FALSE; - keyname = ridx + len; - i += len + keylen; + /* Illegal value. */ + if (idx_vbn == 0) + return FALSE; + + /* Long symbol names are not yet supported. */ + if (flags & ELFIDX__SYMESC) + return FALSE; if (idx_off == RFADEF__C_INDEX) { /* Indirect entry. Recurse. */ - if (!vms_traverse_index (abfd, idx_vbn, idx)) + if (!vms_traverse_index (abfd, idx_vbn, cs)) return FALSE; } else @@ -162,10 +264,36 @@ vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym **idx) return FALSE; memcpy (name, keyname, keylen); name[keylen] = 0; - (*idx)->file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off; - (*idx)->name = name; - (*idx)++; + + if (flags & ELFIDX__LISTRFA) + { + struct vms_lhs lhs; + + /* Read the LHS. */ + off = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off; + if (bfd_seek (abfd, off, SEEK_SET) != 0 + || bfd_bread (&lhs, sizeof (lhs), abfd) != sizeof (lhs)) + return FALSE; + + /* FIXME: this adds extra entries that were not accounted. */ + if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_g_rfa)) + return FALSE; + if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_wk_rfa)) + return FALSE; + if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_g_rfa)) + return FALSE; + if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_wk_rfa)) + return FALSE; + } + else + { + if (!vms_add_index (cs, name, idx_vbn, idx_off)) + return FALSE; + } } + + /* Point to the next index entry. */ + p = keyname + keylen; } return TRUE; @@ -174,13 +302,13 @@ vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym **idx) /* Read index #IDX, which must have NBREL entries. */ static struct carsym * -vms_lib_read_index (bfd *abfd, int idx, unsigned int nbrel) +vms_lib_read_index (bfd *abfd, int idx, unsigned int *nbrel) { - struct carsym *res; - struct carsym *el; struct vms_idd idd; unsigned int flags; unsigned int vbn; + struct carsym *csbuf; + struct carsym_mem csm; /* Read index desription. */ if (bfd_seek (abfd, LHD_IDXDESC + idx * IDD_LENGTH, SEEK_SET) != 0 @@ -193,28 +321,40 @@ vms_lib_read_index (bfd *abfd, int idx, unsigned int nbrel) || !(flags & IDD__FLAGS_VARLENIDX)) return NULL; - res = bfd_alloc (abfd, nbrel * sizeof (struct carsym)); - if (res == NULL) + csbuf = bfd_alloc (abfd, *nbrel * sizeof (struct carsym)); + if (csbuf == NULL) return NULL; - el = res; + csm.max = *nbrel; + csm.nbr = 0; + csm.realloced = FALSE; + csm.idx = csbuf; /* Note: if the index is empty, there is no block to traverse. */ vbn = bfd_getl32 (idd.vbn); - if (vbn != 0 && !vms_traverse_index (abfd, vbn, &el)) + if (vbn != 0 && !vms_traverse_index (abfd, vbn, &csm)) { - bfd_release (abfd, res); + if (csm.realloced && csm.idx != NULL) + free (csm.idx); + + /* Note: in case of error, we can free what was allocated on the + BFD's objalloc. */ + bfd_release (abfd, csbuf); return NULL; } - if ((unsigned int)(el - res) != nbrel) + if (csm.realloced) { - /* Inconsistency between the number of modules declared and the number - of modules found in the index. */ - bfd_release (abfd, res); - return NULL; + /* There are more entries than the first estimate. Allocate on + the BFD's objalloc. */ + csbuf = bfd_alloc (abfd, csm.nbr * sizeof (struct carsym)); + if (csbuf == NULL) + return NULL; + memcpy (csbuf, csm.idx, csm.nbr * sizeof (struct carsym)); + free (csm.idx); + *nbrel = csm.nbr; } - return res; + return csbuf; } /* Standard function. */ @@ -227,6 +367,7 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) struct lib_tdata *tdata_hold; struct lib_tdata *tdata; unsigned int dcxvbn; + unsigned int nbr_ent; /* Read header. */ if (bfd_bread (&lhd, sizeof (lhd), abfd) != sizeof (lhd)) @@ -239,7 +380,7 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) /* Check sanity (= magic) number. */ sanity = bfd_getl32 (lhd.sanity); if (!(sanity == LHD_SANEID3 - || sanity == LHD_SANEID4 + || sanity == LHD_SANEID6 || sanity == LHD_SANEID_DCX)) { bfd_set_error (bfd_error_wrong_format); @@ -258,6 +399,15 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) return NULL; } break; + case vms_lib_ia64: + if ((lhd.type != LBR__C_TYP_IOBJ && lhd.type != LBR__C_TYP_ISHSTB) + || bfd_getl32 (lhd.majorid) != 6 + || lhd.nindex != 2) + { + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + break; case vms_lib_txt: if ((lhd.type != LBR__C_TYP_TXT && lhd.type != LBR__C_TYP_MLB @@ -286,15 +436,23 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) /* Read indexes. */ tdata->nbr_modules = bfd_getl32 (lhd.modcnt); - tdata->nbr_syms = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules; - tdata->modules = vms_lib_read_index (abfd, 0, tdata->nbr_modules); - if (tdata->modules == NULL) + tdata->artdata.symdef_count = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules; + nbr_ent = tdata->nbr_modules; + tdata->modules = vms_lib_read_index (abfd, 0, &nbr_ent); + if (tdata->modules == NULL || nbr_ent != tdata->nbr_modules) goto err; if (lhd.nindex == 2) { - tdata->syms = vms_lib_read_index (abfd, 1, tdata->nbr_syms); - if (tdata->syms == NULL) + nbr_ent = tdata->artdata.symdef_count; + tdata->artdata.symdefs = vms_lib_read_index (abfd, 1, &nbr_ent); + if (tdata->artdata.symdefs == NULL) + goto err; + /* Only IA64 archives may have more entries in the index that what + was declared. */ + if (nbr_ent != tdata->artdata.symdef_count + && kind != vms_lib_ia64) goto err; + tdata->artdata.symdef_count = nbr_ent; } tdata->cache = bfd_zalloc (abfd, sizeof (bfd *) * tdata->nbr_modules); if (tdata->cache == NULL) @@ -368,7 +526,7 @@ _bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind) /* The map is always present. Also mark shared image library. */ abfd->has_armap = TRUE; - if (tdata->type == LBR__C_TYP_ESHSTB) + if (tdata->type == LBR__C_TYP_ESHSTB || tdata->type == LBR__C_TYP_ISHSTB) abfd->is_thin_archive = TRUE; return abfd->xvec; @@ -412,9 +570,9 @@ _bfd_vms_lib_mkarchive (bfd *abfd) tdata->type = LBR__C_TYP_EOBJ; tdata->nbr_modules = 0; - tdata->nbr_syms = 0; + tdata->artdata.symdef_count = 0; tdata->modules = NULL; - tdata->syms = NULL; + tdata->artdata.symdefs = NULL; tdata->cache = NULL; return TRUE; @@ -426,28 +584,29 @@ symindex _bfd_vms_lib_find_symbol (bfd *abfd, const char *name) { struct lib_tdata *tdata = bfd_libdata (abfd); + carsym *syms = tdata->artdata.symdefs; int lo, hi; /* Open-coded binary search for speed. */ lo = 0; - hi = tdata->nbr_syms - 1; + hi = tdata->artdata.symdef_count - 1; while (lo <= hi) { int mid = lo + (hi - lo) / 2; int diff; - diff = (char)(name[0] - tdata->syms[mid].name[0]); + diff = (char)(name[0] - syms[mid].name[0]); if (diff == 0) - diff = strcmp (name, tdata->syms[mid].name); + diff = strcmp (name, syms[mid].name); if (diff == 0) - return tdata->syms[mid].file_offset; + return mid; else if (diff < 0) hi = mid - 1; else lo = mid + 1; } - return 0; + return BFD_NO_MORE_SYMBOLS; } /* IO vector for archive member. Need that because members are not linearly @@ -955,16 +1114,19 @@ vms_lib_bopen (bfd *el, file_ptr filepos) /* Read Record length + MHD + align byte. */ len = tdata->mhd_size; if (vms_lib_bread_raw (el, buf, 2) != 2) - return -1; + return FALSE; if (bfd_getl16 (buf) != len) - return -1; + return FALSE; len = (len + 1) & ~1; BFD_ASSERT (len <= sizeof (buf)); if (vms_lib_bread_raw (el, buf, len) != len) - return -1; + return FALSE; /* Get info from mhd. */ mhd = (struct vms_mhd *)buf; + /* Check id. */ + if (mhd->id != MHD__C_MHDID) + return FALSE; if (len >= sizeof (struct vms_mhd)) el->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0; el->mtime = vms_rawtime_to_time_t (mhd->datim); @@ -990,41 +1152,108 @@ vms_lib_bopen (bfd *el, file_ptr filepos) return TRUE; } -/* Standard function: get member at IDX. */ +/* Get member MODIDX. Return NULL in case of error. */ -bfd * -_bfd_vms_lib_get_elt_at_index (bfd *abfd, symindex idx) +static bfd * +_bfd_vms_lib_get_module (bfd *abfd, unsigned int modidx) { struct lib_tdata *tdata = bfd_libdata (abfd); bfd *res; - unsigned int i; + file_ptr file_off; - /* Linear-scan. */ - for (i = 0; i < tdata->nbr_modules; i++) - { - if (tdata->modules[i].file_offset == (file_ptr)idx) - break; - } - - /* Invalid index. */ - if (i >= tdata->nbr_modules) + /* Sanity check. */ + if (modidx >= tdata->nbr_modules) return NULL; /* Already loaded. */ - if (tdata->cache[i]) - return tdata->cache[i]; + if (tdata->cache[modidx]) + return tdata->cache[modidx]; /* Build it. */ - res = _bfd_create_empty_archive_element_shell (abfd); - if (!vms_lib_bopen (res, idx)) - return NULL; - res->filename = tdata->modules[i].name; + file_off = tdata->modules[modidx].file_offset; + if (tdata->type != LBR__C_TYP_IOBJ) + { + res = _bfd_create_empty_archive_element_shell (abfd); + if (res == NULL) + return NULL; + + /* Special reader to deal with data blocks. */ + if (!vms_lib_bopen (res, file_off)) + return NULL; + } + else + { + char buf[256]; + struct vms_mhd *mhd; + struct areltdata *arelt; + + /* Sanity check. The MHD must be big enough to contain module size. */ + if (tdata->mhd_size < offsetof (struct vms_mhd, modsize) + 4) + return NULL; + + /* Read the MHD now. */ + if (bfd_seek (abfd, file_off, SEEK_SET) != 0) + return NULL; + if (bfd_bread (buf, tdata->mhd_size, abfd) != tdata->mhd_size) + return NULL; + + res = _bfd_create_empty_archive_element_shell (abfd); + if (res == NULL) + return NULL; + arelt = bfd_zalloc (res, sizeof (*arelt)); + if (arelt == NULL) + return NULL; + res->arelt_data = arelt; + + /* Get info from mhd. */ + mhd = (struct vms_mhd *)buf; + if (mhd->id != MHD__C_MHDID) + return NULL; + if (tdata->mhd_size >= offsetof (struct vms_mhd, objstat) + 1) + res->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0; + res->mtime = vms_rawtime_to_time_t (mhd->datim); + res->mtime_set = TRUE; + + arelt->parsed_size = bfd_getl32 (mhd->modsize); + + /* No need for a special reader as members are stored linearly. + Just skip the MHD. */ + res->origin = file_off + tdata->mhd_size; + } + + res->filename = tdata->modules[modidx].name; - tdata->cache[i] = res; + tdata->cache[modidx] = res; return res; } +/* Standard function: get member at IDX. */ + +bfd * +_bfd_vms_lib_get_elt_at_index (bfd *abfd, symindex symidx) +{ + struct lib_tdata *tdata = bfd_libdata (abfd); + file_ptr file_off; + unsigned int modidx; + + /* Check symidx. */ + if (symidx > tdata->artdata.symdef_count) + return NULL; + file_off = tdata->artdata.symdefs[symidx].file_offset; + + /* Linear-scan. */ + for (modidx = 0; modidx < tdata->nbr_modules; modidx++) + { + if (tdata->modules[modidx].file_offset == file_off) + break; + } + if (modidx >= tdata->nbr_modules) + return NULL; + + return _bfd_vms_lib_get_module (abfd, modidx); +} + /* Elements of an imagelib are stubs. You can get the real image with this function. */ @@ -1086,8 +1315,7 @@ _bfd_vms_lib_openr_next_archived_file (bfd *archive, return NULL; } - res = _bfd_vms_lib_get_elt_at_index - (archive, bfd_libdata (archive)->modules[idx].file_offset); + res = _bfd_vms_lib_get_module (archive, idx); if (res == NULL) return res; res->proxy_origin = idx; @@ -1099,25 +1327,36 @@ _bfd_vms_lib_openr_next_archived_file (bfd *archive, int _bfd_vms_lib_generic_stat_arch_elt (bfd *abfd, struct stat *st) { - struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; + struct lib_tdata *tdata; + /* Sanity check. */ if (abfd->my_archive == NULL) { bfd_set_error (bfd_error_invalid_operation); return -1; } - if (vec->file_len == (ufile_ptr)-1) + tdata = bfd_libdata (abfd->my_archive); + if (tdata->type != LBR__C_TYP_IOBJ) { - if (vms_lib_bseek (abfd, 0, SEEK_SET) != 0) - return -1; + struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream; - /* Compute length. */ - while (vms_lib_bread (abfd, NULL, 1 << 20) > 0) - ; + if (vec->file_len == (ufile_ptr)-1) + { + if (vms_lib_bseek (abfd, 0, SEEK_SET) != 0) + return -1; + + /* Compute length. */ + while (vms_lib_bread (abfd, NULL, 1 << 20) > 0) + ; + } + st->st_size = vec->file_len; + } + else + { + st->st_size = ((struct areltdata *)abfd->arelt_data)->parsed_size; } - st->st_size = vec->file_len; if (abfd->mtime_set) st->st_mtime = abfd->mtime; else @@ -1213,7 +1452,7 @@ vms_write_index (bfd *abfd, for (i = 0; i < nbr; i++, idx++) { unsigned int idxlen = get_idxlen (idx); - struct vms_idxdef *en; + struct vms_idx *en; int flush = 0; /* Check if a block might overflow. In this case we will flush this @@ -1249,13 +1488,12 @@ vms_write_index (bfd *abfd, /* Update parent block: write the new entry. */ if (abfd != NULL) { - en = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); + en = (struct vms_idx *)(rblk[j]->keys + blk[j].len); memcpy (rblk[j + 1]->keys + blk[j + 1].len, en, blk[j].lastlen); - en = (struct vms_idxdef *) - (rblk[j + 1]->keys + blk[j + 1].len); - bfd_putl32 (blk[j].vbn, en->vbn); - bfd_putl16 (RFADEF__C_INDEX, en->offset); + en = (struct vms_idx *)(rblk[j + 1]->keys + blk[j + 1].len); + bfd_putl32 (blk[j].vbn, en->rfa.vbn); + bfd_putl16 (RFADEF__C_INDEX, en->rfa.offset); } if (j + 1 == flush) @@ -1292,12 +1530,12 @@ vms_write_index (bfd *abfd, if (abfd != NULL) { - en = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); + en = (struct vms_idx *)(rblk[j]->keys + blk[j].len); bfd_putl32 ((idx->abfd->proxy_origin / VMS_BLOCK_SIZE) + 1, - en->vbn); + en->rfa.vbn); bfd_putl16 ((idx->abfd->proxy_origin % VMS_BLOCK_SIZE) + DATA__DATA, - en->offset); + en->rfa.offset); en->keylen = idx->namlen; memcpy (en->keyname, idx->name, idx->namlen); } @@ -1319,14 +1557,14 @@ vms_write_index (bfd *abfd, if (j > 0) { /* Update parent block: write the new entry. */ - struct vms_idxdef *en; - struct vms_idxdef *par; + struct vms_idx *en; + struct vms_idx *par; - en = (struct vms_idxdef *)(rblk[j - 1]->keys + blk[j - 1].len); - par = (struct vms_idxdef *)(rblk[j]->keys + blk[j].len); + en = (struct vms_idx *)(rblk[j - 1]->keys + blk[j - 1].len); + par = (struct vms_idx *)(rblk[j]->keys + blk[j].len); memcpy (par, en, blk[j - 1].lastlen); - bfd_putl32 (blk[j - 1].vbn, par->vbn); - bfd_putl16 (RFADEF__C_INDEX, par->offset); + bfd_putl32 (blk[j - 1].vbn, par->rfa.vbn); + bfd_putl16 (RFADEF__C_INDEX, par->rfa.offset); } /* Write this block on the disk. */ |