fa23f0f49a
2010-05-03 Tristan Gingold <gingold@adacore.com> * vms-lib.c (vms_lib_bopen): Fix the size threshold to read selective_search flag. Add comments. * vms-alpha.c (alpha_vms_bfd_final_link): Create the DMT section before output_has_begun is set.
2025 lines
54 KiB
C
2025 lines
54 KiB
C
/* BFD back-end for VMS archive files.
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Copyright 2010 Free Software Foundation, Inc.
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Written by Tristan Gingold <gingold@adacore.com>, AdaCore.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "safe-ctype.h"
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#include "bfdver.h"
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#include "vms.h"
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#include "vms/lbr.h"
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#include "vms/dcx.h"
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/* The standard VMS disk block size. */
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#ifndef VMS_BLOCK_SIZE
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#define VMS_BLOCK_SIZE 512
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#endif
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/* Maximum key length (which is also the maximum symbol length in archive). */
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#define MAX_KEYLEN 129
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/* DCX Submaps. */
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struct dcxsbm_desc
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{
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unsigned char min_char;
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unsigned char max_char;
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unsigned char *flags;
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unsigned char *nodes;
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unsigned short *next;
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};
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/* Kind of library. Used to filter in archive_p. */
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enum vms_lib_kind
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{
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vms_lib_vax,
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vms_lib_alpha,
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vms_lib_ia64,
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vms_lib_txt
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};
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/* Back-end private data. */
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struct lib_tdata
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{
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/* Standard tdata for an archive. But we don't use many fields. */
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struct artdata artdata;
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/* Major version. */
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unsigned char ver;
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/* Type of the archive. */
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unsigned char type;
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/* Kind of archive. Summary of its type. */
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enum vms_lib_kind kind;
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/* Total size of the mhd (element header). */
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unsigned int mhd_size;
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/* Vector of modules (archive elements), already sorted. */
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unsigned int nbr_modules;
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struct carsym *modules;
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bfd **cache;
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/* DCX (decompression) data. */
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unsigned int nbr_dcxsbm;
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struct dcxsbm_desc *dcxsbm;
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};
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#define bfd_libdata(bfd) ((struct lib_tdata *)((bfd)->tdata.any))
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/* End-Of-Text pattern. This is a special record to mark the end of file. */
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static const unsigned char eotdesc[] = { 0x03, 0x00, 0x77, 0x00, 0x77, 0x00 };
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/* Describe the current state of carsym entries while building the archive
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table of content. Things are simple with Alpha archives as the number
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of entries is known, but with IA64 archives a entry can make a reference
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to severals members. Therefore we must be able to extend the table on the
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fly, but it should be allocated on the bfd - which doesn't support realloc.
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To reduce the overhead, the table is initially allocated in the BFD's
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objalloc and extended if necessary on the heap. In the later case, it
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is finally copied to the BFD's objalloc so that it will automatically be
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freed. */
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struct carsym_mem
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{
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/* The table of content. */
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struct carsym *idx;
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/* Number of entries used in the table. */
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unsigned int nbr;
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/* Maximum number of entries. */
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unsigned int max;
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/* If true, the table was reallocated on the heap. If false, it is still
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in the BFD's objalloc. */
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bfd_boolean realloced;
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};
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/* Simply add a name to the index. */
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static bfd_boolean
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vms_add_index (struct carsym_mem *cs, char *name,
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unsigned int idx_vbn, unsigned int idx_off)
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{
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if (cs->nbr == cs->max)
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{
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struct carsym *n;
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cs->max = 2 * cs->max + 32;
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if (!cs->realloced)
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{
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n = bfd_malloc2 (cs->max, sizeof (struct carsym));
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if (n == NULL)
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return FALSE;
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memcpy (n, cs->idx, cs->nbr * sizeof (struct carsym));
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/* And unfortunately we can't free cs->idx. */
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}
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else
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{
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n = bfd_realloc_or_free (cs->idx, cs->nbr * sizeof (struct carsym));
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if (n == NULL)
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return FALSE;
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}
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cs->idx = n;
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cs->realloced = TRUE;
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}
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cs->idx[cs->nbr].file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
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cs->idx[cs->nbr].name = name;
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cs->nbr++;
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return TRUE;
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}
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/* Follow all member of a lns list (pointed by RFA) and add indexes for
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NAME. Return FALSE in case of error. */
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static bfd_boolean
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vms_add_indexes_from_list (bfd *abfd, struct carsym_mem *cs, char *name,
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struct vms_rfa *rfa)
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{
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struct vms_lns lns;
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unsigned int vbn;
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file_ptr off;
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while (1)
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{
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vbn = bfd_getl32 (rfa->vbn);
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if (vbn == 0)
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return TRUE;
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/* Read the LHS. */
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off = (vbn - 1) * VMS_BLOCK_SIZE + bfd_getl16 (rfa->offset);
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if (bfd_seek (abfd, off, SEEK_SET) != 0
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|| bfd_bread (&lns, sizeof (lns), abfd) != sizeof (lns))
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return FALSE;
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if (!vms_add_index (cs, name,
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bfd_getl32 (lns.modrfa.vbn),
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bfd_getl16 (lns.modrfa.offset)))
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return FALSE;
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rfa = &lns.nxtrfa;
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}
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}
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/* Read block VBN from ABFD and store it into BLK. */
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static bfd_boolean
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vms_read_block (bfd *abfd, unsigned int vbn, void *blk)
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{
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file_ptr off;
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/* Read the index block. */
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off = (vbn - 1) * VMS_BLOCK_SIZE;
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if (bfd_seek (abfd, off, SEEK_SET) != 0
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|| bfd_bread (blk, VMS_BLOCK_SIZE, abfd) != VMS_BLOCK_SIZE)
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return FALSE;
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return TRUE;
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}
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/* Read index block VBN and put the entry in **IDX (which is updated).
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If the entry is indirect, recurse. */
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static bfd_boolean
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vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym_mem *cs)
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{
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struct vms_indexdef indexdef;
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file_ptr off;
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unsigned char *p;
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unsigned char *endp;
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/* Read the index block. */
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BFD_ASSERT (sizeof (indexdef) == VMS_BLOCK_SIZE);
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if (!vms_read_block (abfd, vbn, &indexdef))
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return FALSE;
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/* Traverse it. */
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p = &indexdef.keys[0];
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endp = p + bfd_getl16 (indexdef.used);
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while (p < endp)
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{
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unsigned int idx_vbn;
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unsigned int idx_off;
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unsigned int keylen;
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unsigned char *keyname;
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unsigned int flags;
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/* Extract key length. */
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if (bfd_libdata (abfd)->ver == LBR_MAJORID)
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{
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struct vms_idx *ridx = (struct vms_idx *)p;
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idx_vbn = bfd_getl32 (ridx->rfa.vbn);
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idx_off = bfd_getl16 (ridx->rfa.offset);
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keylen = ridx->keylen;
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flags = 0;
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keyname = ridx->keyname;
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}
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else if (bfd_libdata (abfd)->ver == LBR_ELFMAJORID)
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{
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struct vms_elfidx *ridx = (struct vms_elfidx *)p;
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idx_vbn = bfd_getl32 (ridx->rfa.vbn);
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idx_off = bfd_getl16 (ridx->rfa.offset);
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keylen = bfd_getl16 (ridx->keylen);
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flags = ridx->flags;
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keyname = ridx->keyname;
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}
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else
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return FALSE;
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/* Illegal value. */
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if (idx_vbn == 0)
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return FALSE;
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if (idx_off == RFADEF__C_INDEX)
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{
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/* Indirect entry. Recurse. */
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if (!vms_traverse_index (abfd, idx_vbn, cs))
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return FALSE;
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}
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else
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{
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/* Add a new entry. */
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char *name;
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if (flags & ELFIDX__SYMESC)
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{
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/* Extended key name. */
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unsigned int noff = 0;
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unsigned int koff;
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unsigned int kvbn;
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struct vms_kbn *kbn;
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unsigned char kblk[VMS_BLOCK_SIZE];
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/* Sanity check. */
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if (keylen != sizeof (struct vms_kbn))
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return FALSE;
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kbn = (struct vms_kbn *)keyname;
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keylen = bfd_getl16 (kbn->keylen);
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name = bfd_alloc (abfd, keylen + 1);
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if (name == NULL)
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return FALSE;
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kvbn = bfd_getl32 (kbn->rfa.vbn);
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koff = bfd_getl16 (kbn->rfa.offset);
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/* Read the key, chunk by chunk. */
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do
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{
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unsigned int klen;
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if (!vms_read_block (abfd, kvbn, kblk))
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return FALSE;
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kbn = (struct vms_kbn *)(kblk + koff);
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klen = bfd_getl16 (kbn->keylen);
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kvbn = bfd_getl32 (kbn->rfa.vbn);
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koff = bfd_getl16 (kbn->rfa.offset);
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memcpy (name + noff, kbn + 1, klen);
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noff += klen;
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}
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while (kvbn != 0);
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/* Sanity check. */
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if (noff != keylen)
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return FALSE;
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}
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else
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{
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/* Usual key name. */
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name = bfd_alloc (abfd, keylen + 1);
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if (name == NULL)
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return FALSE;
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memcpy (name, keyname, keylen);
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}
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name[keylen] = 0;
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if (flags & ELFIDX__LISTRFA)
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{
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struct vms_lhs lhs;
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/* Read the LHS. */
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off = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
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if (bfd_seek (abfd, off, SEEK_SET) != 0
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|| bfd_bread (&lhs, sizeof (lhs), abfd) != sizeof (lhs))
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return FALSE;
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/* FIXME: this adds extra entries that were not accounted. */
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if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_g_rfa))
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return FALSE;
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if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_wk_rfa))
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return FALSE;
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if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_g_rfa))
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return FALSE;
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if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_wk_rfa))
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return FALSE;
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}
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else
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{
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if (!vms_add_index (cs, name, idx_vbn, idx_off))
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return FALSE;
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}
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}
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/* Point to the next index entry. */
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p = keyname + keylen;
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}
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return TRUE;
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}
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/* Read index #IDX, which must have NBREL entries. */
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static struct carsym *
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vms_lib_read_index (bfd *abfd, int idx, unsigned int *nbrel)
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{
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struct vms_idd idd;
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unsigned int flags;
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unsigned int vbn;
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struct carsym *csbuf;
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struct carsym_mem csm;
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/* Read index desription. */
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if (bfd_seek (abfd, LHD_IDXDESC + idx * IDD_LENGTH, SEEK_SET) != 0
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|| bfd_bread (&idd, sizeof (idd), abfd) != sizeof (idd))
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return NULL;
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/* Sanity checks. */
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flags = bfd_getl16 (idd.flags);
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if (!(flags & IDD__FLAGS_ASCII)
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|| !(flags & IDD__FLAGS_VARLENIDX))
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return NULL;
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csbuf = bfd_alloc (abfd, *nbrel * sizeof (struct carsym));
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if (csbuf == NULL)
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return NULL;
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csm.max = *nbrel;
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csm.nbr = 0;
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csm.realloced = FALSE;
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csm.idx = csbuf;
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/* Note: if the index is empty, there is no block to traverse. */
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vbn = bfd_getl32 (idd.vbn);
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if (vbn != 0 && !vms_traverse_index (abfd, vbn, &csm))
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{
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if (csm.realloced && csm.idx != NULL)
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free (csm.idx);
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/* Note: in case of error, we can free what was allocated on the
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BFD's objalloc. */
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bfd_release (abfd, csbuf);
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return NULL;
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}
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if (csm.realloced)
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{
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/* There are more entries than the first estimate. Allocate on
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the BFD's objalloc. */
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csbuf = bfd_alloc (abfd, csm.nbr * sizeof (struct carsym));
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if (csbuf == NULL)
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return NULL;
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memcpy (csbuf, csm.idx, csm.nbr * sizeof (struct carsym));
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free (csm.idx);
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*nbrel = csm.nbr;
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}
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return csbuf;
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}
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/* Standard function. */
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static const bfd_target *
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_bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind)
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{
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struct vms_lhd lhd;
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unsigned int sanity;
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struct lib_tdata *tdata_hold;
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struct lib_tdata *tdata;
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unsigned int dcxvbn;
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unsigned int nbr_ent;
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/* Read header. */
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if (bfd_bread (&lhd, sizeof (lhd), abfd) != sizeof (lhd))
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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/* Check sanity (= magic) number. */
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sanity = bfd_getl32 (lhd.sanity);
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if (!(sanity == LHD_SANEID3
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|| sanity == LHD_SANEID6
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|| sanity == LHD_SANEID_DCX))
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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/* Check archive kind. */
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switch (kind)
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{
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case vms_lib_alpha:
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if ((lhd.type != LBR__C_TYP_EOBJ && lhd.type != LBR__C_TYP_ESHSTB)
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|| bfd_getl32 (lhd.majorid) != 3
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|| lhd.nindex != 2)
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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break;
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case vms_lib_ia64:
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if ((lhd.type != LBR__C_TYP_IOBJ && lhd.type != LBR__C_TYP_ISHSTB)
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|| bfd_getl32 (lhd.majorid) != 6
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|| lhd.nindex != 2)
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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break;
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case vms_lib_txt:
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if ((lhd.type != LBR__C_TYP_TXT
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&& lhd.type != LBR__C_TYP_MLB
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&& lhd.type != LBR__C_TYP_HLP)
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|| bfd_getl32 (lhd.majorid) != 3
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|| lhd.nindex != 1)
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
|
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}
|
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break;
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default:
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abort ();
|
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}
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|
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/* Allocate and initialize private data. */
|
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tdata_hold = bfd_libdata (abfd);
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tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata));
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if (tdata == NULL)
|
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return NULL;
|
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abfd->tdata.any = (void *)tdata;
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tdata->ver = bfd_getl32 (lhd.majorid);
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tdata->mhd_size = MHD__C_USRDAT + lhd.mhdusz;
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tdata->type = lhd.type;
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tdata->kind = kind;
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/* Read indexes. */
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tdata->nbr_modules = bfd_getl32 (lhd.modcnt);
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tdata->artdata.symdef_count = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules;
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nbr_ent = tdata->nbr_modules;
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tdata->modules = vms_lib_read_index (abfd, 0, &nbr_ent);
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if (tdata->modules == NULL || nbr_ent != tdata->nbr_modules)
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goto err;
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if (lhd.nindex == 2)
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{
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nbr_ent = tdata->artdata.symdef_count;
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tdata->artdata.symdefs = vms_lib_read_index (abfd, 1, &nbr_ent);
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if (tdata->artdata.symdefs == NULL)
|
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goto err;
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/* Only IA64 archives may have more entries in the index that what
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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)
|
|
goto err;
|
|
|
|
/* Read DCX submaps. */
|
|
dcxvbn = bfd_getl32 (lhd.dcxmapvbn);
|
|
if (dcxvbn != 0)
|
|
{
|
|
unsigned char buf_reclen[4];
|
|
unsigned int reclen;
|
|
unsigned char *buf;
|
|
struct vms_dcxmap *map;
|
|
unsigned int sbm_off;
|
|
unsigned int i;
|
|
|
|
if (bfd_seek (abfd, (dcxvbn - 1) * VMS_BLOCK_SIZE, SEEK_SET) != 0
|
|
|| bfd_bread (buf_reclen, sizeof (buf_reclen), abfd)
|
|
!= sizeof (buf_reclen))
|
|
goto err;
|
|
reclen = bfd_getl32 (buf_reclen);
|
|
buf = bfd_malloc (reclen);
|
|
if (buf == NULL)
|
|
goto err;
|
|
if (bfd_bread (buf, reclen, abfd) != reclen)
|
|
{
|
|
free (buf);
|
|
goto err;
|
|
}
|
|
map = (struct vms_dcxmap *)buf;
|
|
tdata->nbr_dcxsbm = bfd_getl16 (map->nsubs);
|
|
sbm_off = bfd_getl16 (map->sub0);
|
|
tdata->dcxsbm = (struct dcxsbm_desc *)bfd_alloc
|
|
(abfd, tdata->nbr_dcxsbm * sizeof (struct dcxsbm_desc));
|
|
for (i = 0; i < tdata->nbr_dcxsbm; i++)
|
|
{
|
|
struct vms_dcxsbm *sbm = (struct vms_dcxsbm *) (buf + sbm_off);
|
|
struct dcxsbm_desc *sbmdesc = &tdata->dcxsbm[i];
|
|
unsigned int sbm_len;
|
|
unsigned int sbm_sz;
|
|
unsigned int off;
|
|
unsigned char *data = (unsigned char *)sbm;
|
|
unsigned char *buf1;
|
|
unsigned int l, j;
|
|
|
|
sbm_sz = bfd_getl16 (sbm->size);
|
|
sbm_off += sbm_sz;
|
|
BFD_ASSERT (sbm_off <= reclen);
|
|
|
|
sbmdesc->min_char = sbm->min_char;
|
|
BFD_ASSERT (sbmdesc->min_char == 0);
|
|
sbmdesc->max_char = sbm->max_char;
|
|
sbm_len = sbmdesc->max_char - sbmdesc->min_char + 1;
|
|
l = (2 * sbm_len + 7) / 8;
|
|
BFD_ASSERT
|
|
(sbm_sz >= sizeof (struct vms_dcxsbm) + l + 3 * sbm_len
|
|
|| (tdata->nbr_dcxsbm == 1
|
|
&& sbm_sz >= sizeof (struct vms_dcxsbm) + l + sbm_len));
|
|
sbmdesc->flags = (unsigned char *)bfd_alloc (abfd, l);
|
|
memcpy (sbmdesc->flags, data + bfd_getl16 (sbm->flags), l);
|
|
sbmdesc->nodes = (unsigned char *)bfd_alloc (abfd, 2 * sbm_len);
|
|
memcpy (sbmdesc->nodes, data + bfd_getl16 (sbm->nodes), 2 * sbm_len);
|
|
off = bfd_getl16 (sbm->next);
|
|
if (off != 0)
|
|
{
|
|
/* Read the 'next' array. */
|
|
sbmdesc->next = (unsigned short *)bfd_alloc
|
|
(abfd, sbm_len * sizeof (unsigned short));
|
|
buf1 = data + off;
|
|
for (j = 0; j < sbm_len; j++)
|
|
sbmdesc->next[j] = bfd_getl16 (buf1 + j * 2);
|
|
}
|
|
else
|
|
{
|
|
/* There is no next array if there is only one submap. */
|
|
BFD_ASSERT (tdata->nbr_dcxsbm == 1);
|
|
sbmdesc->next = NULL;
|
|
}
|
|
}
|
|
free (buf);
|
|
}
|
|
else
|
|
{
|
|
tdata->nbr_dcxsbm = 0;
|
|
}
|
|
|
|
/* The map is always present. Also mark shared image library. */
|
|
abfd->has_armap = TRUE;
|
|
if (tdata->type == LBR__C_TYP_ESHSTB || tdata->type == LBR__C_TYP_ISHSTB)
|
|
abfd->is_thin_archive = TRUE;
|
|
|
|
return abfd->xvec;
|
|
|
|
err:
|
|
bfd_release (abfd, tdata);
|
|
abfd->tdata.any = (void *)tdata_hold;;
|
|
return NULL;
|
|
}
|
|
|
|
/* Standard function for alpha libraries. */
|
|
|
|
const bfd_target *
|
|
_bfd_vms_lib_alpha_archive_p (bfd *abfd)
|
|
{
|
|
return _bfd_vms_lib_archive_p (abfd, vms_lib_alpha);
|
|
}
|
|
|
|
/* Standard function for text libraries. */
|
|
|
|
static const bfd_target *
|
|
_bfd_vms_lib_txt_archive_p (bfd *abfd)
|
|
{
|
|
return _bfd_vms_lib_archive_p (abfd, vms_lib_txt);
|
|
}
|
|
|
|
/* Standard bfd function. */
|
|
|
|
bfd_boolean
|
|
_bfd_vms_lib_mkarchive (bfd *abfd)
|
|
{
|
|
struct lib_tdata *tdata;
|
|
|
|
tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata));
|
|
if (tdata == NULL)
|
|
return FALSE;
|
|
|
|
abfd->tdata.any = (void *)tdata;
|
|
tdata->ver = 3;
|
|
tdata->mhd_size = sizeof (struct vms_mhd);
|
|
tdata->type = LBR__C_TYP_EOBJ;
|
|
|
|
tdata->nbr_modules = 0;
|
|
tdata->artdata.symdef_count = 0;
|
|
tdata->modules = NULL;
|
|
tdata->artdata.symdefs = NULL;
|
|
tdata->cache = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Find NAME in the symbol index. Return the index. */
|
|
|
|
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->artdata.symdef_count - 1;
|
|
|
|
while (lo <= hi)
|
|
{
|
|
int mid = lo + (hi - lo) / 2;
|
|
int diff;
|
|
|
|
diff = (char)(name[0] - syms[mid].name[0]);
|
|
if (diff == 0)
|
|
diff = strcmp (name, syms[mid].name);
|
|
if (diff == 0)
|
|
return mid;
|
|
else if (diff < 0)
|
|
hi = mid - 1;
|
|
else
|
|
lo = mid + 1;
|
|
}
|
|
return BFD_NO_MORE_SYMBOLS;
|
|
}
|
|
|
|
/* IO vector for archive member. Need that because members are not linearly
|
|
stored in archives. */
|
|
|
|
struct vms_lib_iovec
|
|
{
|
|
/* Current offset. */
|
|
ufile_ptr where;
|
|
|
|
/* Length of the module, when known. */
|
|
ufile_ptr file_len;
|
|
|
|
/* Current position in the record from bfd_bread point of view (ie, after
|
|
decompression). 0 means that no data byte have been read, -2 and -1
|
|
are reserved for the length word. */
|
|
int rec_pos;
|
|
#define REC_POS_NL -4
|
|
#define REC_POS_PAD -3
|
|
#define REC_POS_LEN0 -2
|
|
#define REC_POS_LEN1 -1
|
|
|
|
/* Record length. */
|
|
unsigned short rec_len;
|
|
/* Number of bytes to read in the current record. */
|
|
unsigned short rec_rem;
|
|
/* Offset of the next block. */
|
|
file_ptr next_block;
|
|
/* Current *data* offset in the data block. */
|
|
unsigned short blk_off;
|
|
|
|
/* Offset of the first block. Extracted from the index. */
|
|
file_ptr first_block;
|
|
|
|
/* Initial next_block. Extracted when the MHD is read. */
|
|
file_ptr init_next_block;
|
|
/* Initial blk_off, once the MHD is read. */
|
|
unsigned short init_blk_off;
|
|
|
|
/* Used to store any 3 byte record, which could be the EOF pattern. */
|
|
unsigned char pattern[4];
|
|
|
|
/* DCX. */
|
|
struct dcxsbm_desc *dcxsbms;
|
|
/* Current submap. */
|
|
struct dcxsbm_desc *dcx_sbm;
|
|
/* Current offset in the submap. */
|
|
unsigned int dcx_offset;
|
|
int dcx_pos;
|
|
|
|
/* Compressed buffer. */
|
|
unsigned char *dcx_buf;
|
|
/* Size of the buffer. Used to resize. */
|
|
unsigned int dcx_max;
|
|
/* Number of valid bytes in the buffer. */
|
|
unsigned int dcx_rlen;
|
|
};
|
|
|
|
/* Return the current position. */
|
|
|
|
static file_ptr
|
|
vms_lib_btell (struct bfd *abfd)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
return vec->where;
|
|
}
|
|
|
|
/* Read the header of the next data block if all bytes of the current block
|
|
have been read. */
|
|
|
|
static bfd_boolean
|
|
vms_lib_read_block (struct bfd *abfd)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
|
|
if (vec->blk_off == DATA__LENGTH)
|
|
{
|
|
unsigned char hdr[DATA__DATA];
|
|
|
|
/* Read next block. */
|
|
if (bfd_seek (abfd->my_archive, vec->next_block, SEEK_SET) != 0)
|
|
return FALSE;
|
|
if (bfd_bread (hdr, sizeof (hdr), abfd->my_archive) != sizeof (hdr))
|
|
return FALSE;
|
|
vec->next_block = (bfd_getl32 (hdr + 2) - 1) * VMS_BLOCK_SIZE;
|
|
vec->blk_off = sizeof (hdr);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Read NBYTES from ABFD into BUF if not NULL. If BUF is NULL, bytes are
|
|
not stored. Read linearly from the library, but handle blocks. This
|
|
function does not handle records nor EOF. */
|
|
|
|
static file_ptr
|
|
vms_lib_bread_raw (struct bfd *abfd, void *buf, file_ptr nbytes)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
file_ptr res;
|
|
|
|
res = 0;
|
|
while (nbytes > 0)
|
|
{
|
|
unsigned int l;
|
|
|
|
/* Be sure the current data block is read. */
|
|
if (!vms_lib_read_block (abfd))
|
|
return -1;
|
|
|
|
/* Do not read past the data block, do not read more than requested. */
|
|
l = DATA__LENGTH - vec->blk_off;
|
|
if (l > nbytes)
|
|
l = nbytes;
|
|
if (l == 0)
|
|
return 0;
|
|
if (buf != NULL)
|
|
{
|
|
/* Really read into BUF. */
|
|
if (bfd_bread (buf, l, abfd->my_archive) != l)
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
/* Make as if we are reading. */
|
|
if (bfd_seek (abfd->my_archive, l, SEEK_CUR) != 0)
|
|
return -1;
|
|
}
|
|
|
|
if (buf != NULL)
|
|
buf += l;
|
|
vec->blk_off += l;
|
|
nbytes -= l;
|
|
res += l;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/* Decompress NBYTES from VEC. Store the bytes into BUF if not NULL. */
|
|
|
|
static file_ptr
|
|
vms_lib_dcx (struct vms_lib_iovec *vec, unsigned char *buf, file_ptr nbytes)
|
|
{
|
|
struct dcxsbm_desc *sbm;
|
|
unsigned int i;
|
|
unsigned int offset;
|
|
unsigned int j;
|
|
file_ptr res = 0;
|
|
|
|
/* The loop below expect to deliver at least one byte. */
|
|
if (nbytes == 0)
|
|
return 0;
|
|
|
|
/* Get the current state. */
|
|
sbm = vec->dcx_sbm;
|
|
offset = vec->dcx_offset;
|
|
j = vec->dcx_pos & 7;
|
|
|
|
for (i = vec->dcx_pos >> 3; i < vec->dcx_rlen; i++)
|
|
{
|
|
unsigned char b = vec->dcx_buf[i];
|
|
|
|
for (; j < 8; j++)
|
|
{
|
|
if (b & (1 << j))
|
|
offset++;
|
|
if (!(sbm->flags[offset >> 3] & (1 << (offset & 7))))
|
|
{
|
|
unsigned int n_offset = sbm->nodes[offset];
|
|
if (n_offset == 0)
|
|
{
|
|
/* End of buffer. Stay where we are. */
|
|
vec->dcx_pos = (i << 3) + j;
|
|
if (b & (1 << j))
|
|
offset--;
|
|
vec->dcx_offset = offset;
|
|
vec->dcx_sbm = sbm;
|
|
return res;
|
|
}
|
|
offset = 2 * n_offset;
|
|
}
|
|
else
|
|
{
|
|
unsigned char v = sbm->nodes[offset];
|
|
|
|
if (sbm->next != NULL)
|
|
sbm = vec->dcxsbms + sbm->next[v];
|
|
offset = 0;
|
|
res++;
|
|
|
|
if (buf)
|
|
{
|
|
*buf++ = v;
|
|
nbytes--;
|
|
|
|
if (nbytes == 0)
|
|
{
|
|
vec->dcx_pos = (i << 3) + j + 1;
|
|
vec->dcx_offset = offset;
|
|
vec->dcx_sbm = sbm;
|
|
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
j = 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* Standard IOVEC function. */
|
|
|
|
static file_ptr
|
|
vms_lib_bread (struct bfd *abfd, void *buf, file_ptr nbytes)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
file_ptr res;
|
|
file_ptr chunk;
|
|
|
|
/* Do not read past the end. */
|
|
if (vec->where >= vec->file_len)
|
|
return 0;
|
|
|
|
res = 0;
|
|
while (nbytes > 0)
|
|
{
|
|
if (vec->rec_rem == 0)
|
|
{
|
|
unsigned char blen[2];
|
|
|
|
/* Read record length. */
|
|
if (vms_lib_bread_raw (abfd, &blen, sizeof (blen)) != sizeof (blen))
|
|
return -1;
|
|
vec->rec_len = bfd_getl16 (blen);
|
|
if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt)
|
|
{
|
|
/* Discard record size and align byte. */
|
|
vec->rec_pos = 0;
|
|
vec->rec_rem = vec->rec_len;
|
|
}
|
|
else
|
|
{
|
|
/* Prepend record size. */
|
|
vec->rec_pos = REC_POS_LEN0;
|
|
vec->rec_rem = (vec->rec_len + 1) & ~1; /* With align byte. */
|
|
}
|
|
if (vec->rec_len == 3)
|
|
{
|
|
/* Possibly end of file. Check the pattern. */
|
|
if (vms_lib_bread_raw (abfd, vec->pattern, 4) != 4)
|
|
return -1;
|
|
if (!memcmp (vec->pattern, eotdesc + 2, 3))
|
|
{
|
|
/* This is really an EOF. */
|
|
vec->where += res;
|
|
vec->file_len = vec->where;
|
|
return res;
|
|
}
|
|
}
|
|
|
|
if (vec->dcxsbms != NULL)
|
|
{
|
|
/* This is a compressed member. */
|
|
unsigned int len;
|
|
file_ptr elen;
|
|
|
|
/* Be sure there is enough room for the expansion. */
|
|
len = (vec->rec_len + 1) & ~1;
|
|
if (len > vec->dcx_max)
|
|
{
|
|
while (len > vec->dcx_max)
|
|
vec->dcx_max *= 2;
|
|
vec->dcx_buf = bfd_alloc (abfd, vec->dcx_max);
|
|
if (vec->dcx_buf == NULL)
|
|
return -1;
|
|
}
|
|
|
|
/* Read the compressed record. */
|
|
vec->dcx_rlen = len;
|
|
if (vec->rec_len == 3)
|
|
{
|
|
/* Already read. */
|
|
memcpy (vec->dcx_buf, vec->pattern, 3);
|
|
}
|
|
else
|
|
{
|
|
elen = vms_lib_bread_raw (abfd, vec->dcx_buf, len);
|
|
if (elen != len)
|
|
return -1;
|
|
}
|
|
|
|
/* Dummy expansion to get the expanded length. */
|
|
vec->dcx_offset = 0;
|
|
vec->dcx_sbm = vec->dcxsbms;
|
|
vec->dcx_pos = 0;
|
|
elen = vms_lib_dcx (vec, NULL, 0x10000);
|
|
if (elen < 0)
|
|
return -1;
|
|
vec->rec_len = elen;
|
|
vec->rec_rem = elen;
|
|
|
|
/* Reset the state. */
|
|
vec->dcx_offset = 0;
|
|
vec->dcx_sbm = vec->dcxsbms;
|
|
vec->dcx_pos = 0;
|
|
}
|
|
}
|
|
if (vec->rec_pos < 0)
|
|
{
|
|
unsigned char c;
|
|
switch (vec->rec_pos)
|
|
{
|
|
case REC_POS_LEN0:
|
|
c = vec->rec_len & 0xff;
|
|
vec->rec_pos = REC_POS_LEN1;
|
|
break;
|
|
case REC_POS_LEN1:
|
|
c = (vec->rec_len >> 8) & 0xff;
|
|
vec->rec_pos = 0;
|
|
break;
|
|
case REC_POS_PAD:
|
|
c = 0;
|
|
vec->rec_rem = 0;
|
|
break;
|
|
case REC_POS_NL:
|
|
c = '\n';
|
|
vec->rec_rem = 0;
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
if (buf != NULL)
|
|
{
|
|
*(unsigned char *)buf = c;
|
|
buf++;
|
|
}
|
|
nbytes--;
|
|
res++;
|
|
continue;
|
|
}
|
|
|
|
if (nbytes > vec->rec_rem)
|
|
chunk = vec->rec_rem;
|
|
else
|
|
chunk = nbytes;
|
|
|
|
if (vec->dcxsbms != NULL)
|
|
{
|
|
/* Optimize the stat() case: no need to decompress again as we
|
|
know the length. */
|
|
if (!(buf == NULL && chunk == vec->rec_rem))
|
|
chunk = vms_lib_dcx (vec, buf, chunk);
|
|
}
|
|
else
|
|
{
|
|
if (vec->rec_len == 3)
|
|
{
|
|
if (buf != NULL)
|
|
memcpy (buf, vec->pattern + vec->rec_pos, chunk);
|
|
}
|
|
else
|
|
chunk = vms_lib_bread_raw (abfd, buf, chunk);
|
|
}
|
|
if (chunk < 0)
|
|
return -1;
|
|
res += chunk;
|
|
if (buf != NULL)
|
|
buf += chunk;
|
|
nbytes -= chunk;
|
|
vec->rec_pos += chunk;
|
|
vec->rec_rem -= chunk;
|
|
|
|
if (vec->rec_rem == 0)
|
|
{
|
|
/* End of record reached. */
|
|
if (bfd_libdata (abfd->my_archive)->kind == vms_lib_txt)
|
|
{
|
|
if ((vec->rec_len & 1) == 1
|
|
&& vec->rec_len != 3
|
|
&& vec->dcxsbms == NULL)
|
|
{
|
|
/* Eat the pad byte. */
|
|
unsigned char pad;
|
|
if (vms_lib_bread_raw (abfd, &pad, 1) != 1)
|
|
return -1;
|
|
}
|
|
vec->rec_pos = REC_POS_NL;
|
|
vec->rec_rem = 1;
|
|
}
|
|
else
|
|
{
|
|
if ((vec->rec_len & 1) == 1 && vec->dcxsbms != NULL)
|
|
{
|
|
vec->rec_pos = REC_POS_PAD;
|
|
vec->rec_rem = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
vec->where += res;
|
|
return res;
|
|
}
|
|
|
|
/* Standard function, but we currently only handle the rewind case. */
|
|
|
|
static int
|
|
vms_lib_bseek (struct bfd *abfd, file_ptr offset, int whence)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
|
|
if (whence == SEEK_SET && offset == 0)
|
|
{
|
|
vec->where = 0;
|
|
vec->rec_rem = 0;
|
|
vec->dcx_pos = -1;
|
|
vec->blk_off = vec->init_blk_off;
|
|
vec->next_block = vec->init_next_block;
|
|
|
|
if (bfd_seek (abfd->my_archive, vec->first_block, SEEK_SET) != 0)
|
|
return -1;
|
|
}
|
|
else
|
|
abort ();
|
|
return 0;
|
|
}
|
|
|
|
static file_ptr
|
|
vms_lib_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED,
|
|
const void *where ATTRIBUTE_UNUSED,
|
|
file_ptr nbytes ATTRIBUTE_UNUSED)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
vms_lib_bclose (struct bfd *abfd)
|
|
{
|
|
abfd->iostream = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vms_lib_bflush (struct bfd *abfd ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vms_lib_bstat (struct bfd *abfd ATTRIBUTE_UNUSED,
|
|
struct stat *sb ATTRIBUTE_UNUSED)
|
|
{
|
|
/* Not supported. */
|
|
return 0;
|
|
}
|
|
|
|
static void *
|
|
vms_lib_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED,
|
|
void *addr ATTRIBUTE_UNUSED,
|
|
bfd_size_type len ATTRIBUTE_UNUSED,
|
|
int prot ATTRIBUTE_UNUSED,
|
|
int flags ATTRIBUTE_UNUSED,
|
|
file_ptr offset ATTRIBUTE_UNUSED)
|
|
{
|
|
return (void *) -1;
|
|
}
|
|
|
|
static const struct bfd_iovec vms_lib_iovec = {
|
|
&vms_lib_bread, &vms_lib_bwrite, &vms_lib_btell, &vms_lib_bseek,
|
|
&vms_lib_bclose, &vms_lib_bflush, &vms_lib_bstat, &vms_lib_bmmap
|
|
};
|
|
|
|
/* Open a library module. FILEPOS is the position of the module header. */
|
|
|
|
static bfd_boolean
|
|
vms_lib_bopen (bfd *el, file_ptr filepos)
|
|
{
|
|
struct vms_lib_iovec *vec;
|
|
char buf[256];
|
|
struct vms_mhd *mhd;
|
|
struct lib_tdata *tdata = bfd_libdata (el->my_archive);
|
|
unsigned int len;
|
|
|
|
/* Allocate and initialized the iovec. */
|
|
vec = bfd_zalloc (el, sizeof (*vec));
|
|
if (vec == NULL)
|
|
return FALSE;
|
|
|
|
el->iostream = vec;
|
|
el->iovec = &vms_lib_iovec;
|
|
|
|
/* File length is not known. */
|
|
vec->file_len = -1;
|
|
|
|
/* Read the first data block. */
|
|
vec->next_block = filepos & ~(VMS_BLOCK_SIZE - 1);
|
|
vec->blk_off = DATA__LENGTH;
|
|
if (!vms_lib_read_block (el))
|
|
return FALSE;
|
|
|
|
/* Prepare to read the first record. */
|
|
vec->blk_off = filepos & (VMS_BLOCK_SIZE - 1);
|
|
vec->rec_rem = 0;
|
|
if (bfd_seek (el->my_archive, filepos, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
/* Read Record length + MHD + align byte. */
|
|
len = tdata->mhd_size;
|
|
if (vms_lib_bread_raw (el, buf, 2) != 2)
|
|
return FALSE;
|
|
if (bfd_getl16 (buf) != len)
|
|
return FALSE;
|
|
len = (len + 1) & ~1;
|
|
BFD_ASSERT (len <= sizeof (buf));
|
|
if (vms_lib_bread_raw (el, buf, len) != len)
|
|
return FALSE;
|
|
|
|
/* Get info from mhd. */
|
|
mhd = (struct vms_mhd *)buf;
|
|
/* Check id. */
|
|
if (mhd->id != MHD__C_MHDID)
|
|
return FALSE;
|
|
if (len >= MHD__C_MHDLEN + 1)
|
|
el->selective_search = (mhd->objstat & MHD__M_SELSRC) ? 1 : 0;
|
|
el->mtime = vms_rawtime_to_time_t (mhd->datim);
|
|
el->mtime_set = TRUE;
|
|
|
|
/* Reinit the iovec so that seek() will point to the first record after
|
|
the mhd. */
|
|
vec->where = 0;
|
|
vec->init_blk_off = vec->blk_off;
|
|
vec->init_next_block = vec->next_block;
|
|
vec->first_block = bfd_tell (el->my_archive);
|
|
vec->dcxsbms = bfd_libdata (el->my_archive)->dcxsbm;
|
|
|
|
if (vec->dcxsbms != NULL)
|
|
{
|
|
/* Handle DCX. */
|
|
vec->dcx_max = 10 * 1024;
|
|
vec->dcx_buf = bfd_alloc (el, vec->dcx_max);
|
|
vec->dcx_pos = -1;
|
|
if (vec->dcx_buf == NULL)
|
|
return -1;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Get member MODIDX. Return NULL in case of error. */
|
|
|
|
static bfd *
|
|
_bfd_vms_lib_get_module (bfd *abfd, unsigned int modidx)
|
|
{
|
|
struct lib_tdata *tdata = bfd_libdata (abfd);
|
|
bfd *res;
|
|
file_ptr file_off;
|
|
|
|
/* Sanity check. */
|
|
if (modidx >= tdata->nbr_modules)
|
|
return NULL;
|
|
|
|
/* Already loaded. */
|
|
if (tdata->cache[modidx])
|
|
return tdata->cache[modidx];
|
|
|
|
/* Build it. */
|
|
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[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. */
|
|
|
|
bfd *
|
|
_bfd_vms_lib_get_imagelib_file (bfd *el)
|
|
{
|
|
bfd *archive = el->my_archive;
|
|
const char *modname = el->filename;
|
|
int modlen = strlen (modname);
|
|
char *filename;
|
|
int j;
|
|
bfd *res;
|
|
|
|
/* Convert module name to lower case and append '.exe'. */
|
|
filename = bfd_alloc (el, modlen + 5);
|
|
if (filename == NULL)
|
|
return NULL;
|
|
for (j = 0; j < modlen; j++)
|
|
if (ISALPHA (modname[j]))
|
|
filename[j] = TOLOWER (modname[j]);
|
|
else
|
|
filename[j] = modname[j];
|
|
memcpy (filename + modlen, ".exe", 5);
|
|
|
|
filename = _bfd_append_relative_path (archive, filename);
|
|
if (filename == NULL)
|
|
return NULL;
|
|
res = bfd_openr (filename, NULL);
|
|
|
|
if (res == NULL)
|
|
{
|
|
(*_bfd_error_handler)(_("could not open shared image '%s' from '%s'"),
|
|
filename, archive->filename);
|
|
bfd_release (archive, filename);
|
|
return NULL;
|
|
}
|
|
|
|
/* FIXME: put it in a cache ? */
|
|
return res;
|
|
}
|
|
|
|
/* Standard function. */
|
|
|
|
bfd *
|
|
_bfd_vms_lib_openr_next_archived_file (bfd *archive,
|
|
bfd *last_file)
|
|
{
|
|
unsigned int idx;
|
|
bfd *res;
|
|
|
|
if (!last_file)
|
|
idx = 0;
|
|
else
|
|
idx = last_file->proxy_origin + 1;
|
|
|
|
if (idx >= bfd_libdata (archive)->nbr_modules)
|
|
{
|
|
bfd_set_error (bfd_error_no_more_archived_files);
|
|
return NULL;
|
|
}
|
|
|
|
res = _bfd_vms_lib_get_module (archive, idx);
|
|
if (res == NULL)
|
|
return res;
|
|
res->proxy_origin = idx;
|
|
return res;
|
|
}
|
|
|
|
/* Standard function. Just compute the length. */
|
|
|
|
int
|
|
_bfd_vms_lib_generic_stat_arch_elt (bfd *abfd, struct stat *st)
|
|
{
|
|
struct lib_tdata *tdata;
|
|
|
|
/* Sanity check. */
|
|
if (abfd->my_archive == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
return -1;
|
|
}
|
|
|
|
tdata = bfd_libdata (abfd->my_archive);
|
|
if (tdata->type != LBR__C_TYP_IOBJ)
|
|
{
|
|
struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
|
|
|
|
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;
|
|
}
|
|
|
|
if (abfd->mtime_set)
|
|
st->st_mtime = abfd->mtime;
|
|
else
|
|
st->st_mtime = 0;
|
|
st->st_uid = 0;
|
|
st->st_gid = 0;
|
|
st->st_mode = 0644;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Internal representation of an index entry. */
|
|
|
|
struct vms_index
|
|
{
|
|
/* Corresponding archive member. */
|
|
bfd *abfd;
|
|
|
|
/* Number of reference to this entry. */
|
|
unsigned int ref;
|
|
|
|
/* Length of the key. */
|
|
unsigned short namlen;
|
|
|
|
/* Key. */
|
|
const char *name;
|
|
};
|
|
|
|
/* Used to sort index entries. */
|
|
|
|
static int
|
|
vms_index_cmp (const void *lv, const void *rv)
|
|
{
|
|
const struct vms_index *l = lv;
|
|
const struct vms_index *r = rv;
|
|
|
|
return strcmp (l->name, r->name);
|
|
}
|
|
|
|
/* Maximum number of index blocks level. */
|
|
|
|
#define MAX_LEVEL 10
|
|
|
|
/* Get the size of an index entry. */
|
|
|
|
static unsigned int
|
|
get_idxlen (struct vms_index *idx)
|
|
{
|
|
return 7 + idx->namlen;
|
|
}
|
|
|
|
/* Write the index. VBN is the first vbn to be used, and will contain
|
|
on return the last vbn.
|
|
Return TRUE on success. */
|
|
|
|
static bfd_boolean
|
|
vms_write_index (bfd *abfd,
|
|
struct vms_index *idx, unsigned int nbr, unsigned int *vbn,
|
|
unsigned int *topvbn)
|
|
{
|
|
unsigned int i;
|
|
int j;
|
|
int level;
|
|
struct vms_indexdef *rblk[MAX_LEVEL];
|
|
struct idxblk
|
|
{
|
|
unsigned int vbn;
|
|
unsigned short len;
|
|
unsigned short lastlen;
|
|
} blk[MAX_LEVEL];
|
|
|
|
if (nbr == 0)
|
|
{
|
|
if (topvbn != NULL)
|
|
*topvbn = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
if (abfd == NULL)
|
|
{
|
|
/* Sort the index the first time this function is called. */
|
|
qsort (idx, nbr, sizeof (struct vms_index), vms_index_cmp);
|
|
}
|
|
|
|
/* Allocate first index block. */
|
|
level = 1;
|
|
if (abfd != NULL)
|
|
rblk[0] = bfd_malloc (sizeof (struct vms_indexdef));
|
|
blk[0].vbn = (*vbn)++;
|
|
blk[0].len = 0;
|
|
blk[0].lastlen = 0;
|
|
|
|
for (i = 0; i < nbr; i++, idx++)
|
|
{
|
|
unsigned int idxlen = get_idxlen (idx);
|
|
struct vms_idx *en;
|
|
int flush = 0;
|
|
|
|
/* Check if a block might overflow. In this case we will flush this
|
|
block and all the blocks below it. */
|
|
for (j = 0; j < level; j++)
|
|
if (blk[j].len + blk[j].lastlen + idxlen > INDEXDEF__BLKSIZ)
|
|
flush = j + 1;
|
|
|
|
for (j = 0; j < level; j++)
|
|
{
|
|
if (j < flush)
|
|
{
|
|
/* There is not enough room to write the new entry in this
|
|
block or in a parent block. */
|
|
|
|
if (j + 1 == level)
|
|
{
|
|
BFD_ASSERT (level < MAX_LEVEL);
|
|
|
|
/* Need to create a parent. */
|
|
if (abfd != NULL)
|
|
{
|
|
rblk[level] = bfd_malloc (sizeof (struct vms_indexdef));
|
|
bfd_putl32 (*vbn, rblk[j]->parent);
|
|
}
|
|
blk[level].vbn = (*vbn)++;
|
|
blk[level].len = 0;
|
|
blk[level].lastlen = 0;
|
|
|
|
level++;
|
|
}
|
|
|
|
/* Update parent block: write the new entry. */
|
|
if (abfd != NULL)
|
|
{
|
|
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_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)
|
|
{
|
|
/* And allocate it. Do it only on the block that won't be
|
|
flushed (so that the parent of the parent can be
|
|
updated too). */
|
|
blk[j + 1].len += blk[j].lastlen;
|
|
blk[j + 1].lastlen = 0;
|
|
}
|
|
|
|
/* Write this block on the disk. */
|
|
if (abfd != NULL)
|
|
{
|
|
bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used);
|
|
if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE,
|
|
SEEK_SET) != 0)
|
|
return FALSE;
|
|
if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd)
|
|
!= sizeof (struct vms_indexdef))
|
|
return FALSE;
|
|
}
|
|
|
|
/* Reset this block. */
|
|
blk[j].len = 0;
|
|
blk[j].lastlen = 0;
|
|
blk[j].vbn = (*vbn)++;
|
|
}
|
|
|
|
/* Append it to the block. */
|
|
if (j == 0)
|
|
{
|
|
blk[j].len += blk[j].lastlen;
|
|
|
|
if (abfd != NULL)
|
|
{
|
|
en = (struct vms_idx *)(rblk[j]->keys + blk[j].len);
|
|
bfd_putl32 ((idx->abfd->proxy_origin / VMS_BLOCK_SIZE) + 1,
|
|
en->rfa.vbn);
|
|
bfd_putl16
|
|
((idx->abfd->proxy_origin % VMS_BLOCK_SIZE) + DATA__DATA,
|
|
en->rfa.offset);
|
|
en->keylen = idx->namlen;
|
|
memcpy (en->keyname, idx->name, idx->namlen);
|
|
}
|
|
}
|
|
|
|
blk[j].lastlen = idxlen;
|
|
}
|
|
}
|
|
|
|
if (topvbn != NULL)
|
|
*topvbn = blk[level - 1].vbn;
|
|
|
|
if (abfd == NULL)
|
|
return TRUE;
|
|
|
|
/* Flush. */
|
|
for (j = 0; j < level; j++)
|
|
{
|
|
if (j > 0)
|
|
{
|
|
/* Update parent block: write the new entry. */
|
|
struct vms_idx *en;
|
|
struct vms_idx *par;
|
|
|
|
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->rfa.vbn);
|
|
bfd_putl16 (RFADEF__C_INDEX, par->rfa.offset);
|
|
}
|
|
|
|
/* Write this block on the disk. */
|
|
bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used);
|
|
if (bfd_seek (abfd, (blk[j].vbn - 1) * VMS_BLOCK_SIZE,
|
|
SEEK_SET) != 0)
|
|
return FALSE;
|
|
if (bfd_bwrite (rblk[j], sizeof (struct vms_indexdef), abfd)
|
|
!= sizeof (struct vms_indexdef))
|
|
return FALSE;
|
|
|
|
free (rblk[j]);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Append data to the data block DATA. Force write if PAD is true. */
|
|
|
|
static bfd_boolean
|
|
vms_write_data_block (bfd *arch, struct vms_datadef *data, file_ptr *off,
|
|
const unsigned char *buf, unsigned int len, int pad)
|
|
{
|
|
while (len > 0 || pad)
|
|
{
|
|
unsigned int doff = *off & (VMS_BLOCK_SIZE - 1);
|
|
unsigned int remlen = (DATA__LENGTH - DATA__DATA) - doff;
|
|
unsigned int l;
|
|
|
|
l = (len > remlen) ? remlen : len;
|
|
memcpy (data->data + doff, buf, l);
|
|
buf += l;
|
|
len -= l;
|
|
doff += l;
|
|
*off += l;
|
|
|
|
if (doff == (DATA__LENGTH - DATA__DATA) || (len == 0 && pad))
|
|
{
|
|
data->recs = 0;
|
|
data->fill_1 = 0;
|
|
bfd_putl32 ((*off / VMS_BLOCK_SIZE) + 2, data->link);
|
|
|
|
if (bfd_bwrite (data, sizeof (*data), arch) != sizeof (*data))
|
|
return FALSE;
|
|
|
|
*off += DATA__LENGTH - doff;
|
|
|
|
if (len == 0)
|
|
break;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Build the symbols index. */
|
|
|
|
static bfd_boolean
|
|
_bfd_vms_lib_build_map (unsigned int nbr_modules,
|
|
struct vms_index *modules,
|
|
unsigned int *res_cnt,
|
|
struct vms_index **res)
|
|
{
|
|
unsigned int i;
|
|
asymbol **syms = NULL;
|
|
long syms_max = 0;
|
|
struct vms_index *map = NULL;
|
|
unsigned int map_max = 1024; /* Fine initial default. */
|
|
unsigned int map_count = 0;
|
|
|
|
map = (struct vms_index *) bfd_malloc (map_max * sizeof (struct vms_index));
|
|
if (map == NULL)
|
|
goto error_return;
|
|
|
|
/* Gather symbols. */
|
|
for (i = 0; i < nbr_modules; i++)
|
|
{
|
|
long storage;
|
|
long symcount;
|
|
long src_count;
|
|
bfd *current = modules[i].abfd;
|
|
|
|
if ((bfd_get_file_flags (current) & HAS_SYMS) == 0)
|
|
continue;
|
|
|
|
storage = bfd_get_symtab_upper_bound (current);
|
|
if (storage < 0)
|
|
goto error_return;
|
|
|
|
if (storage != 0)
|
|
{
|
|
if (storage > syms_max)
|
|
{
|
|
if (syms_max > 0)
|
|
free (syms);
|
|
syms_max = storage;
|
|
syms = (asymbol **) bfd_malloc (syms_max);
|
|
if (syms == NULL)
|
|
goto error_return;
|
|
}
|
|
symcount = bfd_canonicalize_symtab (current, syms);
|
|
if (symcount < 0)
|
|
goto error_return;
|
|
|
|
/* Now map over all the symbols, picking out the ones we
|
|
want. */
|
|
for (src_count = 0; src_count < symcount; src_count++)
|
|
{
|
|
flagword flags = (syms[src_count])->flags;
|
|
asection *sec = syms[src_count]->section;
|
|
|
|
if ((flags & BSF_GLOBAL
|
|
|| flags & BSF_WEAK
|
|
|| flags & BSF_INDIRECT
|
|
|| bfd_is_com_section (sec))
|
|
&& ! bfd_is_und_section (sec))
|
|
{
|
|
struct vms_index *new_map;
|
|
|
|
/* This symbol will go into the archive header. */
|
|
if (map_count == map_max)
|
|
{
|
|
map_max *= 2;
|
|
new_map = (struct vms_index *)
|
|
bfd_realloc (map, map_max * sizeof (struct vms_index));
|
|
if (new_map == NULL)
|
|
goto error_return;
|
|
map = new_map;
|
|
}
|
|
|
|
map[map_count].abfd = current;
|
|
/* FIXME: check length. */
|
|
map[map_count].namlen = strlen (syms[src_count]->name);
|
|
map[map_count].name = syms[src_count]->name;
|
|
map_count++;
|
|
modules[i].ref++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*res_cnt = map_count;
|
|
*res = map;
|
|
return TRUE;
|
|
|
|
error_return:
|
|
if (syms_max > 0)
|
|
free (syms);
|
|
if (map != NULL)
|
|
free (map);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Do the hard work: write an archive on the disk. */
|
|
|
|
bfd_boolean
|
|
_bfd_vms_lib_write_archive_contents (bfd *arch)
|
|
{
|
|
bfd *current;
|
|
unsigned int nbr_modules;
|
|
struct vms_index *modules;
|
|
unsigned int nbr_symbols;
|
|
struct vms_index *symbols;
|
|
struct lib_tdata *tdata = bfd_libdata (arch);
|
|
unsigned int i;
|
|
file_ptr off;
|
|
unsigned int nbr_mod_iblk;
|
|
unsigned int nbr_sym_iblk;
|
|
unsigned int vbn;
|
|
unsigned int mod_idx_vbn;
|
|
unsigned int sym_idx_vbn;
|
|
|
|
/* Count the number of modules (and do a first sanity check). */
|
|
nbr_modules = 0;
|
|
for (current = arch->archive_head;
|
|
current != NULL;
|
|
current = current->archive_next)
|
|
{
|
|
/* This check is checking the bfds for the objects we're reading
|
|
from (which are usually either an object file or archive on
|
|
disk), not the archive entries we're writing to. We don't
|
|
actually create bfds for the archive members, we just copy
|
|
them byte-wise when we write out the archive. */
|
|
if (bfd_write_p (current) || !bfd_check_format (current, bfd_object))
|
|
{
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
goto input_err;
|
|
}
|
|
|
|
nbr_modules++;
|
|
}
|
|
|
|
/* Build the modules list. */
|
|
BFD_ASSERT (tdata->modules == NULL);
|
|
modules = bfd_alloc (arch, nbr_modules * sizeof (struct vms_index));
|
|
if (modules == NULL)
|
|
return FALSE;
|
|
|
|
for (current = arch->archive_head, i = 0;
|
|
current != NULL;
|
|
current = current->archive_next, i++)
|
|
{
|
|
int nl;
|
|
|
|
modules[i].abfd = current;
|
|
modules[i].name = vms_get_module_name (current->filename, FALSE);
|
|
modules[i].ref = 1;
|
|
|
|
/* FIXME: silently truncate long names ? */
|
|
nl = strlen (modules[i].name);
|
|
modules[i].namlen = (nl > MAX_KEYLEN ? MAX_KEYLEN : nl);
|
|
}
|
|
|
|
/* Create the module index. */
|
|
vbn = 0;
|
|
if (!vms_write_index (NULL, modules, nbr_modules, &vbn, NULL))
|
|
return FALSE;
|
|
nbr_mod_iblk = vbn;
|
|
|
|
/* Create symbol index. */
|
|
if (!_bfd_vms_lib_build_map (nbr_modules, modules, &nbr_symbols, &symbols))
|
|
return FALSE;
|
|
|
|
vbn = 0;
|
|
if (!vms_write_index (NULL, symbols, nbr_symbols, &vbn, NULL))
|
|
return FALSE;
|
|
nbr_sym_iblk = vbn;
|
|
|
|
/* Write modules and remember their position. */
|
|
off = (1 + nbr_mod_iblk + nbr_sym_iblk) * VMS_BLOCK_SIZE;
|
|
|
|
if (bfd_seek (arch, off, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < nbr_modules; i++)
|
|
{
|
|
struct vms_datadef data;
|
|
unsigned char blk[VMS_BLOCK_SIZE];
|
|
struct vms_mhd *mhd;
|
|
unsigned int sz;
|
|
|
|
current = modules[i].abfd;
|
|
current->proxy_origin = off;
|
|
|
|
bfd_putl16 (sizeof (struct vms_mhd), blk);
|
|
mhd = (struct vms_mhd *)(blk + 2);
|
|
memset (mhd, 0, sizeof (struct vms_mhd));
|
|
mhd->lbrflag = 0;
|
|
mhd->id = MHD__C_MHDID;
|
|
mhd->objidlng = 4;
|
|
memcpy (mhd->objid, "V1.0", 4);
|
|
bfd_putl32 (modules[i].ref, mhd->refcnt);
|
|
/* FIXME: datim. */
|
|
|
|
sz = (2 + sizeof (struct vms_mhd) + 1) & ~1;
|
|
if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0)
|
|
goto input_err;
|
|
|
|
if (bfd_seek (current, 0, SEEK_SET) != 0)
|
|
goto input_err;
|
|
|
|
while (1)
|
|
{
|
|
sz = bfd_bread (blk, sizeof (blk), current);
|
|
if (sz == 0)
|
|
break;
|
|
if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0)
|
|
goto input_err;
|
|
}
|
|
if (vms_write_data_block (arch, &data, &off,
|
|
eotdesc, sizeof (eotdesc), 1) < 0)
|
|
goto input_err;
|
|
}
|
|
|
|
/* Write the indexes. */
|
|
vbn = 2;
|
|
if (vms_write_index (arch, modules, nbr_modules, &vbn, &mod_idx_vbn) != TRUE)
|
|
return FALSE;
|
|
if (vms_write_index (arch, symbols, nbr_symbols, &vbn, &sym_idx_vbn) != TRUE)
|
|
return FALSE;
|
|
|
|
/* Write libary header. */
|
|
{
|
|
unsigned char blk[VMS_BLOCK_SIZE];
|
|
struct vms_lhd *lhd = (struct vms_lhd *)blk;
|
|
struct vms_idd *idd = (struct vms_idd *)(blk + sizeof (*lhd));
|
|
unsigned int idd_flags;
|
|
|
|
memset (blk, 0, sizeof (blk));
|
|
|
|
lhd->type = LBR__C_TYP_EOBJ;
|
|
lhd->nindex = 2;
|
|
bfd_putl32 (LHD_SANEID3, lhd->sanity);
|
|
bfd_putl16 (3, lhd->majorid);
|
|
bfd_putl16 (0, lhd->minorid);
|
|
snprintf ((char *)lhd->lbrver + 1, sizeof (lhd->lbrver) - 1,
|
|
"GNU ar %u.%u.%u",
|
|
(unsigned)(BFD_VERSION / 100000000UL),
|
|
(unsigned)(BFD_VERSION / 1000000UL) % 100,
|
|
(unsigned)(BFD_VERSION / 10000UL) % 100);
|
|
lhd->lbrver[sizeof (lhd->lbrver) - 1] = 0;
|
|
lhd->lbrver[0] = strlen ((char *)lhd->lbrver + 1);
|
|
|
|
/* FIXME. */
|
|
bfd_putl64 (0, lhd->credat);
|
|
bfd_putl64 (0, lhd->updtim);
|
|
|
|
lhd->mhdusz = sizeof (struct vms_mhd) - MHD__C_USRDAT;
|
|
|
|
bfd_putl32 (nbr_modules + nbr_symbols, lhd->idxcnt);
|
|
bfd_putl32 (nbr_modules, lhd->modcnt);
|
|
bfd_putl32 (nbr_modules, lhd->modhdrs);
|
|
|
|
bfd_putl32 (vbn - 1, lhd->hipreal);
|
|
bfd_putl32 (vbn - 1, lhd->hiprusd);
|
|
|
|
/* First index (modules name). */
|
|
idd_flags = IDD__FLAGS_ASCII | IDD__FLAGS_VARLENIDX
|
|
| IDD__FLAGS_NOCASECMP | IDD__FLAGS_NOCASENTR;
|
|
bfd_putl16 (idd_flags, idd->flags);
|
|
bfd_putl16 (MAX_KEYLEN, idd->keylen);
|
|
bfd_putl16 (mod_idx_vbn, idd->vbn);
|
|
idd++;
|
|
|
|
/* Second index (symbols name). */
|
|
bfd_putl16 (idd_flags, idd->flags);
|
|
bfd_putl16 (MAX_KEYLEN, idd->keylen);
|
|
bfd_putl16 (sym_idx_vbn, idd->vbn);
|
|
idd++;
|
|
|
|
if (bfd_seek (arch, 0, SEEK_SET) != 0)
|
|
return FALSE;
|
|
if (bfd_bwrite (blk, sizeof (blk), arch) != sizeof (blk))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
input_err:
|
|
bfd_set_error (bfd_error_on_input, current, bfd_get_error ());
|
|
return FALSE;
|
|
}
|
|
|
|
/* Add a target for text library. This costs almost nothing and is useful to
|
|
read VMS library on the host. */
|
|
|
|
const bfd_target vms_lib_txt_vec =
|
|
{
|
|
"vms-libtxt", /* Name. */
|
|
bfd_target_unknown_flavour,
|
|
BFD_ENDIAN_UNKNOWN, /* byteorder */
|
|
BFD_ENDIAN_UNKNOWN, /* header_byteorder */
|
|
0, /* Object flags. */
|
|
0, /* Sect flags. */
|
|
0, /* symbol_leading_char. */
|
|
' ', /* ar_pad_char. */
|
|
15, /* ar_max_namelen. */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
|
|
|
|
{_bfd_dummy_target, _bfd_dummy_target, /* bfd_check_format. */
|
|
_bfd_vms_lib_txt_archive_p, _bfd_dummy_target},
|
|
{bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_set_format. */
|
|
{bfd_false, bfd_false, bfd_false, bfd_false}, /* bfd_write_contents. */
|
|
|
|
BFD_JUMP_TABLE_GENERIC (_bfd_generic),
|
|
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib),
|
|
BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
|
|
BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
|
|
BFD_JUMP_TABLE_WRITE (_bfd_nowrite),
|
|
BFD_JUMP_TABLE_LINK (_bfd_nolink),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
(PTR) 0
|
|
};
|