332 lines
7.6 KiB
C
332 lines
7.6 KiB
C
/* Alpha VMS external format of Libraries.
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Copyright (C) 2010-2022 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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#ifndef _VMS_LBR_H
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#define _VMS_LBR_H
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/* Libray HeaDer. */
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/* Magic numbers. Should match the major version. */
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#define LHD_SANEID_DCX 319232342
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#define LHD_SANEID3 233579905
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#define LHD_SANEID6 233579911
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/* Library type. */
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#define LBR__C_TYP_UNK 0 /* Unknown / unspecified. */
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#define LBR__C_TYP_OBJ 1 /* Vax object. */
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#define LBR__C_TYP_MLB 2 /* Macro. */
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#define LBR__C_TYP_HLP 3 /* Help. */
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#define LBR__C_TYP_TXT 4 /* Text. */
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#define LBR__C_TYP_SHSTB 5 /* Vax shareable image. */
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#define LBR__C_TYP_NCS 6 /* NCS. */
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#define LBR__C_TYP_EOBJ 7 /* Alpha object. */
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#define LBR__C_TYP_ESHSTB 8 /* Alpha shareable image. */
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#define LBR__C_TYP_IOBJ 9 /* IA-64 object. */
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#define LBR__C_TYP_ISHSTB 10 /* IA-64 shareable image. */
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struct vms_lhd
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{
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/* Type of the library. See above. */
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unsigned char type;
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/* Number of indexes. Generally 1, 2 for object libraries. */
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unsigned char nindex;
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unsigned char fill_1[2];
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/* Sanity Id. */
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unsigned char sanity[4];
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/* Version. */
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unsigned char majorid[2];
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unsigned char minorid[2];
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/* Tool name. */
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unsigned char lbrver[32];
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/* Create time. */
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unsigned char credat[8];
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/* Update time. */
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unsigned char updtim[8];
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/* Size of the MHD. */
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unsigned char mhdusz;
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unsigned char idxblkf[2]; /* Unused. */
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unsigned char fill_2;
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unsigned char closerror[2];
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unsigned char spareword[2];
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/* First free block, and number of free blocks. */
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unsigned char freevbn[4];
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unsigned char freeblk[4];
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unsigned char nextrfa[6];
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unsigned char nextvbn[4];
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/* Free pre-allocated index block. */
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/* Number of free blocks. */
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unsigned char freidxblk[4];
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/* VBN of a simply linked list of free blocks. The list is terminated by a
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nul VBN. */
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unsigned char freeidx[4];
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/* Highest pre-allocated index block and in use. */
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unsigned char hipreal[4];
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unsigned char hiprusd[4];
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/* Number of index blocks in use. */
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unsigned char idxblks[4];
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/* Number of index entries. */
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unsigned char idxcnt[4];
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/* Number of modules entries. */
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unsigned char modcnt[4];
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unsigned char fill_3[2];
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/* Number of module headers. */
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unsigned char modhdrs[4];
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/* Overhead index pointers. */
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unsigned char idxovh[4];
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/* Update history records. */
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unsigned char maxluhrec[2];
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unsigned char numluhrec[2];
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unsigned char begluhrfa[6];
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unsigned char endluhrfa[6];
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/* DCX map. */
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unsigned char dcxmapvbn[4];
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unsigned char fill_4[4 * 13];
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};
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/* Known major ids. */
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#define LBR_MAJORID 3 /* Alpha libraries. */
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#define LBR_ELFMAJORID 6 /* Elf libraries (new index, new data). */
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/* Offset of the first IDD. */
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#define LHD_IDXDESC 196
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/* InDex Description. */
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struct vms_idd
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{
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unsigned char flags[2];
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/* Max length of the key. */
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unsigned char keylen[2];
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/* First index block. */
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unsigned char vbn[4];
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};
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/* IDD flags. */
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#define IDD__FLAGS_ASCII 1
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#define IDD__FLAGS_LOCKED 2
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#define IDD__FLAGS_VARLENIDX 4
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#define IDD__FLAGS_NOCASECMP 8
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#define IDD__FLAGS_NOCASENTR 16
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#define IDD__FLAGS_UPCASNTRY 32
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#define IDD_LENGTH 8
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/* Index block. */
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#define INDEXDEF__LENGTH 512
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#define INDEXDEF__BLKSIZ 500
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struct vms_indexdef
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{
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/* Number of bytes used. */
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unsigned char used[2];
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/* VBN of the parent. */
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unsigned char parent[4];
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unsigned char fill_1[6];
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/* The key field contains vms_idx/vms_elfidx structures, which are
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simply a key (= a string) and a rfa. */
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unsigned char keys[INDEXDEF__BLKSIZ];
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};
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/* An offset in a file. */
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struct vms_rfa
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{
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/* Logical block number, 1 based.
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0 means that the field is absent. Block size is 512. */
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unsigned char vbn[4];
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/* Offset within the block. */
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unsigned char offset[2];
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};
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/* Index keys. For version 3. */
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struct vms_idx
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{
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/* Offset from the start of the vbn, so minimum should be
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DATA__DATA (ie 6). */
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struct vms_rfa rfa;
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unsigned char keylen;
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/* The length of this field is in fact keylen. */
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unsigned char keyname[256];
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};
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/* Index keys, for version 4 and later. */
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struct vms_elfidx
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{
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struct vms_rfa rfa;
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unsigned char keylen[2];
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unsigned char flags;
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unsigned char keyname[256];
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};
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/* Flags of elfidx. */
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#define ELFIDX__WEAK 0x01 /* Weak symbol. */
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#define ELFIDX__GROUP 0x02 /* Group symbol. */
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#define ELFIDX__LISTRFA 0x04 /* RFA field points to an LHS. */
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#define ELFIDX__SYMESC 0x08 /* Long symbol. */
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#define RFADEF__C_INDEX 0xffff
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/* List head structure. That's what is pointed by rfa when LISTRFA flag
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is set in elfidx. */
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struct vms_lhs
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{
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struct vms_rfa ng_g_rfa; /* Non-group global. */
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struct vms_rfa ng_wk_rfa; /* Non-group weak. */
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struct vms_rfa g_g_rfa; /* Group global. */
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struct vms_rfa g_wk_rfa; /* Group weak. */
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unsigned char flags;
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};
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/* List node structure. Fields of LHS point to this structure. */
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struct vms_lns
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{
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/* Next node in the list. */
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struct vms_rfa nxtrfa;
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/* Module associated with the key. */
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struct vms_rfa modrfa;
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};
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struct vms_datadef
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{
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/* Number of records in this block. */
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unsigned char recs;
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unsigned char fill_1;
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/* Next vbn. */
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unsigned char link[4];
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/* Data. The first word is the record length, followed by record
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data and a possible pad byte so that record length is always aligned. */
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unsigned char data[506];
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};
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#define DATA__LENGTH 512
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#define DATA__DATA 6
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/* Key name block. This is used for keys longer than 128 bytes. */
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struct vms_kbn
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{
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/* Length of the key chunk. */
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unsigned char keylen[2];
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/* RFA of the next chunk. */
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struct vms_rfa rfa;
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/* Followed by the key chunk. */
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};
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/* Module header. */
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struct vms_mhd
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{
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/* Fixed part. */
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unsigned char lbrflag;
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unsigned char id;
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unsigned char fill_1[2];
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unsigned char refcnt[4];
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unsigned char datim[8];
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unsigned char objstat;
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/* Ident or GSMATCH. */
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unsigned char objidlng;
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unsigned char objid[31];
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unsigned char pad1[3];
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unsigned char otherefcnt[4];
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unsigned char modsize[4];
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unsigned char pad2[4];
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};
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#define MHD__C_MHDID 0xad /* Value for id. */
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#define MHD__C_MHDLEN 16 /* Fixed part length. */
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#define MHD__C_USRDAT 16
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/* Flags for objstat. */
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#define MHD__M_SELSRC 0x1 /* Selective search. */
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#define MHD__M_OBJTIR 0x2
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#define MHD__M_WKSYM 0x4
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struct vms_luh
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{
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unsigned char nxtluhblk[4];
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unsigned char spare[2];
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unsigned char data[506];
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};
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struct vms_luhdef
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{
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unsigned char rechdr[2];
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unsigned char reclen[2];
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};
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#define LUH__RECHDRLEN 4
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#define LUH__RECHDRMRK 0xabba
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#define LUH__DATAFLDLEN 506
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/* Entry in the history. */
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struct vms_leh
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{
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unsigned char date[8];
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unsigned char nbr_units[2];
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unsigned char action[2]; /* 1: delete, 2: insert, 3: replaced. */
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unsigned char idlen;
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/* username
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modules... */
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};
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#endif /* _VMS_LBR_H */
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