rocket-tools/fsf-binutils-gdb.git - Unnamed repository; edit this file 'description' to name the repository.

index : rocket-tools/fsf-binutils-gdb.git

Unnamed repository; edit this file 'description' to name the repository.

root

diff options

author	Andrew Cagney <cagney@redhat.com>	2002-11-14 00:25:05 +0000
committer	Andrew Cagney <cagney@redhat.com>	2002-11-14 00:25:05 +0000
commit	73937e031a946d29ddfff632d478c904fed8d6ff (patch)
tree	1b4ff7e695dc5a400bfc1bd493697f2daca10f79 /gdb/regcache.h
parent	2c85904f5a63ddaf3cf7054acbe23fee9c30fad2 (diff)
download	fsf-binutils-gdb-73937e031a946d29ddfff632d478c904fed8d6ff.zip fsf-binutils-gdb-73937e031a946d29ddfff632d478c904fed8d6ff.tar.gz fsf-binutils-gdb-73937e031a946d29ddfff632d478c904fed8d6ff.tar.bz2

2002-11-13 Andrew Cagney <cagney@redhat.com>

* regcache.h (deprecated_read_register_bytes): Rename read_register_bytes. (deprecated_write_register_bytes): Rename write_register_bytes. * alpha-tdep.c, arm-tdep.c, cris-tdep.c, d10v-tdep.c: Update. * dwarf2cfi.c, frv-tdep.c, hppa-tdep.c, ia64-tdep.c: Update. * m68k-tdep.c, mcore-tdep.c, mips-tdep.c, mn10300-tdep.c: Update. * ns32k-tdep.c, regcache.c, remote-sds.c, remote-vx.c: Update. * remote.c, rs6000-tdep.c, s390-tdep.c, sh-tdep.c: Update. * sparc-tdep.c, v850-tdep.c, vax-tdep.c, x86-64-tdep.c: Update. * xstormy16-tdep.c, z8k-tdep.c, config/nm-gnu.h: Update. * config/nm-m3.h, config/h8500/tm-h8500.h: Update. * config/i386/nm-ptx4.h, config/i386/nm-symmetry.h: Update. * config/m32r/tm-m32r.h, config/m68k/nm-sun3.h: Update. * config/m68k/tm-delta68.h, config/m68k/tm-linux.h: Update. * config/mn10200/tm-mn10200.h, config/pa/tm-hppa64.h: Update. * config/sparc/nm-nbsd.h, config/sparc/nm-sun4os4.h: Update. * config/sparc/nm-sun4sol2.h, config/sparc/tm-sparclet.h: Update. 2002-11-13 Andrew Cagney <ac131313@redhat.com> * mi-main.c (mi_cmd_data_write_register_values): Use deprecated_write_register_bytes instead of write_register_bytes.

Diffstat (limited to 'gdb/regcache.h')

-rw-r--r--

gdb/regcache.h

1 files changed, 4 insertions, 4 deletions

id='n256' href='#n256'>256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351

/* BFD back-end for VMS archive files.

   Copyright (C) 2010-2015 Free Software Foundation, Inc.
   Written by Tristan Gingold <gingold@adacore.com>, AdaCore.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "safe-ctype.h"
#include "bfdver.h"
#include "libiberty.h"
#include "vms.h"
#include "vms/lbr.h"
#include "vms/dcx.h"

/* The standard VMS disk block size.  */
#ifndef VMS_BLOCK_SIZE
#define VMS_BLOCK_SIZE 512
#endif

/* Maximum key length (which is also the maximum symbol length in archive).  */
#define MAX_KEYLEN 128
#define MAX_EKEYLEN 1024

/* DCX Submaps.  */

struct dcxsbm_desc
{
  unsigned char min_char;
  unsigned char max_char;
  unsigned char *flags;
  unsigned char *nodes;
  unsigned short *next;
};

/* Kind of library.  Used to filter in archive_p.  */

enum vms_lib_kind
  {
    vms_lib_vax,
    vms_lib_alpha,
    vms_lib_ia64,
    vms_lib_txt
  };

/* Back-end private data.  */

struct lib_tdata
{
  /* Standard tdata for an archive.  But we don't use many fields.  */
  struct artdata artdata;

  /* Major version.  */
  unsigned char ver;

  /* Type of the archive.  */
  unsigned char type;

  /* Kind of archive.  Summary of its type.  */
  enum vms_lib_kind kind;

  /* Total size of the mhd (element header).  */
  unsigned int mhd_size;

  /* Creation date.  */
  unsigned int credat_lo;
  unsigned int credat_hi;

  /* Vector of modules (archive elements), already sorted.  */
  unsigned int nbr_modules;
  struct carsym *modules;
  bfd **cache;

  /* DCX (decompression) data.  */
  unsigned int nbr_dcxsbm;
  struct dcxsbm_desc *dcxsbm;
};

#define bfd_libdata(bfd) ((struct lib_tdata *)((bfd)->tdata.any))

/* End-Of-Text pattern.  This is a special record to mark the end of file.  */

static const unsigned char eotdesc[] = { 0x03, 0x00, 0x77, 0x00, 0x77, 0x00 };

/* Describe the current state of carsym entries while building the archive
   table of content.  Things are simple with Alpha archives as the number
   of entries is known, but with IA64 archives a entry can make a reference
   to severals members.  Therefore we must be able to extend the table on the
   fly, but it should be allocated on the bfd - which doesn't support realloc.
   To reduce the overhead, the table is initially allocated in the BFD's
   objalloc and extended if necessary on the heap.  In the later case, it
   is finally copied to the BFD's objalloc so that it will automatically be
   freed.  */

struct carsym_mem
{
  /* The table of content.  */
  struct carsym *idx;

  /* Number of entries used in the table.  */
  unsigned int nbr;

  /* Maximum number of entries.  */
  unsigned int max;

  /* If true, the table was reallocated on the heap.  If false, it is still
     in the BFD's objalloc.  */
  bfd_boolean realloced;
};

/* Simply add a name to the index.  */

static bfd_boolean
vms_add_index (struct carsym_mem *cs, char *name,
               unsigned int idx_vbn, unsigned int idx_off)
{
  if (cs->nbr == cs->max)
    {
      struct carsym *n;

      cs->max = 2 * cs->max + 32;

      if (!cs->realloced)
        {
          n = bfd_malloc2 (cs->max, sizeof (struct carsym));
          if (n == NULL)
            return FALSE;
          memcpy (n, cs->idx, cs->nbr * sizeof (struct carsym));
          /* And unfortunately we can't free cs->idx.  */
        }
      else
        {
          n = bfd_realloc_or_free (cs->idx, cs->nbr * sizeof (struct carsym));
          if (n == NULL)
            return FALSE;
        }
      cs->idx = n;
      cs->realloced = TRUE;
    }
  cs->idx[cs->nbr].file_offset = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
  cs->idx[cs->nbr].name = name;
  cs->nbr++;
  return TRUE;
}

/* Follow all member of a lns list (pointed by RFA) and add indexes for
   NAME.  Return FALSE in case of error.  */

static bfd_boolean
vms_add_indexes_from_list (bfd *abfd, struct carsym_mem *cs, char *name,
                           struct vms_rfa *rfa)
{
  struct vms_lns lns;
  unsigned int vbn;
  file_ptr off;

  while (1)
    {
      vbn = bfd_getl32 (rfa->vbn);
      if (vbn == 0)
        return TRUE;

      /* Read the LHS.  */
      off = (vbn - 1) * VMS_BLOCK_SIZE + bfd_getl16 (rfa->offset);
      if (bfd_seek (abfd, off, SEEK_SET) != 0
          || bfd_bread (&lns, sizeof (lns), abfd) != sizeof (lns))
        return FALSE;

      if (!vms_add_index (cs, name,
                          bfd_getl32 (lns.modrfa.vbn),
                          bfd_getl16 (lns.modrfa.offset)))
        return FALSE;

      rfa = &lns.nxtrfa;
    }
}

/* Read block VBN from ABFD and store it into BLK.  Return FALSE in case of error.  */

static bfd_boolean
vms_read_block (bfd *abfd, unsigned int vbn, void *blk)
{
  file_ptr off;

  off = (vbn - 1) * VMS_BLOCK_SIZE;
  if (bfd_seek (abfd, off, SEEK_SET) != 0
      || bfd_bread (blk, VMS_BLOCK_SIZE, abfd) != VMS_BLOCK_SIZE)
    return FALSE;

  return TRUE;
}

/* Write the content of BLK to block VBN of ABFD.  Return FALSE in case of error.  */

static bfd_boolean
vms_write_block (bfd *abfd, unsigned int vbn, void *blk)
{
  file_ptr off;

  off = (vbn - 1) * VMS_BLOCK_SIZE;
  if (bfd_seek (abfd, off, SEEK_SET) != 0
      || bfd_bwrite (blk, VMS_BLOCK_SIZE, abfd) != VMS_BLOCK_SIZE)
    return FALSE;

  return TRUE;
}

/* Read index block VBN and put the entry in **IDX (which is updated).
   If the entry is indirect, recurse.  */

static bfd_boolean
vms_traverse_index (bfd *abfd, unsigned int vbn, struct carsym_mem *cs)
{
  struct vms_indexdef indexdef;
  file_ptr off;
  unsigned char *p;
  unsigned char *endp;

  /* Read the index block.  */
  BFD_ASSERT (sizeof (indexdef) == VMS_BLOCK_SIZE);
  if (!vms_read_block (abfd, vbn, &indexdef))
    return FALSE;

  /* Traverse it.  */
  p = &indexdef.keys[0];
  endp = p + bfd_getl16 (indexdef.used);
  while (p < endp)
    {
      unsigned int idx_vbn;
      unsigned int idx_off;
      unsigned int keylen;
      unsigned char *keyname;
      unsigned int flags;

      /* Extract key length.  */
      if (bfd_libdata (abfd)->ver == LBR_MAJORID)
        {
          struct vms_idx *ridx = (struct vms_idx *)p;

          idx_vbn = bfd_getl32 (ridx->rfa.vbn);
          idx_off = bfd_getl16 (ridx->rfa.offset);

          keylen = ridx->keylen;
          flags = 0;
          keyname = ridx->keyname;
        }
      else if (bfd_libdata (abfd)->ver == LBR_ELFMAJORID)
        {
          struct vms_elfidx *ridx = (struct vms_elfidx *)p;

          idx_vbn = bfd_getl32 (ridx->rfa.vbn);
          idx_off = bfd_getl16 (ridx->rfa.offset);

          keylen = bfd_getl16 (ridx->keylen);
          flags = ridx->flags;
          keyname = ridx->keyname;
        }
      else
        return FALSE;

      /* Illegal value.  */
      if (idx_vbn == 0)
        return FALSE;

      /* Point to the next index entry.  */
      p = keyname + keylen;

      if (idx_off == RFADEF__C_INDEX)
        {
          /* Indirect entry.  Recurse.  */
          if (!vms_traverse_index (abfd, idx_vbn, cs))
            return FALSE;
        }
      else
        {
          /* Add a new entry.  */
          char *name;

          if (flags & ELFIDX__SYMESC)
            {
              /* Extended key name.  */
              unsigned int noff = 0;
              unsigned int koff;
              unsigned int kvbn;
              struct vms_kbn *kbn;
              unsigned char kblk[VMS_BLOCK_SIZE];

              /* Sanity check.  */
              if (keylen != sizeof (struct vms_kbn))
                return FALSE;

              kbn = (struct vms_kbn *)keyname;
              keylen = bfd_getl16 (kbn->keylen);

              name = bfd_alloc (abfd, keylen + 1);
              if (name == NULL)
                return FALSE;
              kvbn = bfd_getl32 (kbn->rfa.vbn);
              koff = bfd_getl16 (kbn->rfa.offset);

              /* Read the key, chunk by chunk.  */
              do
                {
                  unsigned int klen;

                  if (!vms_read_block (abfd, kvbn, kblk))
                    return FALSE;
                  kbn = (struct vms_kbn *)(kblk + koff);
                  klen = bfd_getl16 (kbn->keylen);
                  kvbn = bfd_getl32 (kbn->rfa.vbn);
                  koff = bfd_getl16 (kbn->rfa.offset);

                  memcpy (name + noff, kbn + 1, klen);
                  noff += klen;
                }
              while (kvbn != 0);

              /* Sanity check.  */
              if (noff != keylen)
                return FALSE;
            }
          else
            {
              /* Usual key name.  */
              name = bfd_alloc (abfd, keylen + 1);
              if (name == NULL)
                return FALSE;

              memcpy (name, keyname, keylen);
            }
          name[keylen] = 0;

          if (flags & ELFIDX__LISTRFA)
            {
              struct vms_lhs lhs;

              /* Read the LHS.  */
              off = (idx_vbn - 1) * VMS_BLOCK_SIZE + idx_off;
              if (bfd_seek (abfd, off, SEEK_SET) != 0
                  || bfd_bread (&lhs, sizeof (lhs), abfd) != sizeof (lhs))
                return FALSE;

              /* FIXME: this adds extra entries that were not accounted.  */
              if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_g_rfa))
                return FALSE;
              if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.ng_wk_rfa))
                return FALSE;
              if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_g_rfa))
                return FALSE;
              if (!vms_add_indexes_from_list (abfd, cs, name, &lhs.g_wk_rfa))
                return FALSE;
            }
          else
            {
              if (!vms_add_index (cs, name, idx_vbn, idx_off))
                return FALSE;
            }
        }
    }

  return TRUE;
}

/* Read index #IDX, which must have NBREL entries.  */

static struct carsym *
vms_lib_read_index (bfd *abfd, int idx, unsigned int *nbrel)
{
  struct vms_idd idd;
  unsigned int flags;
  unsigned int vbn;
  struct carsym *csbuf;
  struct carsym_mem csm;

  /* Read index desription.  */
  if (bfd_seek (abfd, LHD_IDXDESC + idx * IDD_LENGTH, SEEK_SET) != 0
      || bfd_bread (&idd, sizeof (idd), abfd) != sizeof (idd))
    return NULL;

  /* Sanity checks.  */
  flags = bfd_getl16 (idd.flags);
  if (!(flags & IDD__FLAGS_ASCII)
      || !(flags & IDD__FLAGS_VARLENIDX))
    return NULL;

  csbuf = bfd_alloc (abfd, *nbrel * sizeof (struct carsym));
  if (csbuf == NULL)
    return NULL;

  csm.max = *nbrel;
  csm.nbr = 0;
  csm.realloced = FALSE;
  csm.idx = csbuf;

  /* Note: if the index is empty, there is no block to traverse.  */
  vbn = bfd_getl32 (idd.vbn);
  if (vbn != 0 && !vms_traverse_index (abfd, vbn, &csm))
    {
      if (csm.realloced && csm.idx != NULL)
        free (csm.idx);

      /* Note: in case of error, we can free what was allocated on the
         BFD's objalloc.  */
      bfd_release (abfd, csbuf);
      return NULL;
    }

  if (csm.realloced)
    {
      /* There are more entries than the first estimate.  Allocate on
         the BFD's objalloc.  */
      csbuf = bfd_alloc (abfd, csm.nbr * sizeof (struct carsym));
      if (csbuf == NULL)
        return NULL;
      memcpy (csbuf, csm.idx, csm.nbr * sizeof (struct carsym));
      free (csm.idx);
      *nbrel = csm.nbr;
    }
  return csbuf;
}

/* Standard function.  */

static const bfd_target *
_bfd_vms_lib_archive_p (bfd *abfd, enum vms_lib_kind kind)
{
  struct vms_lhd lhd;
  unsigned int sanity;
  unsigned int majorid;
  struct lib_tdata *tdata_hold;
  struct lib_tdata *tdata;
  unsigned int dcxvbn;
  unsigned int nbr_ent;

  /* Read header.  */
  if (bfd_bread (&lhd, sizeof (lhd), abfd) != sizeof (lhd))
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  /* Check sanity (= magic) number.  */
  sanity = bfd_getl32 (lhd.sanity);
  if (!(sanity == LHD_SANEID3
        || sanity == LHD_SANEID6
        || sanity == LHD_SANEID_DCX))
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  majorid = bfd_getl32 (lhd.majorid);

  /* Check archive kind.  */
  switch (kind)
    {
    case vms_lib_alpha:
      if ((lhd.type != LBR__C_TYP_EOBJ && lhd.type != LBR__C_TYP_ESHSTB)
          || majorid != LBR_MAJORID
          || lhd.nindex != 2)
        {
          bfd_set_error (bfd_error_wrong_format);
          return NULL;
        }
      break;
    case vms_lib_ia64:
      if ((lhd.type != LBR__C_TYP_IOBJ && lhd.type != LBR__C_TYP_ISHSTB)
          || majorid != LBR_ELFMAJORID
          || lhd.nindex != 2)
        {
          bfd_set_error (bfd_error_wrong_format);
          return NULL;
        }
      break;
    case vms_lib_txt:
      if ((lhd.type != LBR__C_TYP_TXT
           && lhd.type != LBR__C_TYP_MLB
           && lhd.type != LBR__C_TYP_HLP)
          || majorid != LBR_MAJORID
          || lhd.nindex != 1)
        {
          bfd_set_error (bfd_error_wrong_format);
          return NULL;
        }
      break;
    default:
      abort ();
    }

  /* Allocate and initialize private data.  */
  tdata_hold = bfd_libdata (abfd);
  tdata = (struct lib_tdata *) bfd_zalloc (abfd, sizeof (struct lib_tdata));
  if (tdata == NULL)
    return NULL;
  abfd->tdata.any = (void *)tdata;
  tdata->ver = majorid;
  tdata->mhd_size = MHD__C_USRDAT + lhd.mhdusz;
  tdata->type = lhd.type;
  tdata->kind = kind;
  tdata->credat_lo = bfd_getl32 (lhd.credat + 0);
  tdata->credat_hi = bfd_getl32 (lhd.credat + 4);

  /* Read indexes.  */
  tdata->nbr_modules = bfd_getl32 (lhd.modcnt);
  tdata->artdata.symdef_count = bfd_getl32 (lhd.idxcnt) - tdata->nbr_modules;
  nbr_ent = tdata->nbr_modules;
  tdata->modules = vms_lib_read_index (abfd, 0, &nbr_ent);
  if (tdata->modules == NULL || nbr_ent != tdata->nbr_modules)
    goto err;
  if (lhd.nindex == 2)
    {
      nbr_ent = tdata->artdata.symdef_count;
      tdata->artdata.symdefs = vms_lib_read_index (abfd, 1, &nbr_ent);
      if (tdata->artdata.symdefs == NULL)
        goto err;
      /* Only IA64 archives may have more entries in the index that what
         was declared.  */
      if (nbr_ent != tdata->artdata.symdef_count
          && kind != vms_lib_ia64)
        goto err;
      tdata->artdata.symdef_count = nbr_ent;
    }
  tdata->cache = bfd_zalloc (abfd, sizeof (bfd *) * tdata->nbr_modules);
  if (tdata->cache == NULL)
    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 ia64 libraries.  */

const bfd_target *
_bfd_vms_lib_ia64_archive_p (bfd *abfd)
{
  return _bfd_vms_lib_archive_p (abfd, vms_lib_ia64);
}

/* 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.  */

static bfd_boolean
_bfd_vms_lib_mkarchive (bfd *abfd, enum vms_lib_kind kind)
{
  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;
  vms_get_time (&tdata->credat_hi, &tdata->credat_lo);

  tdata->kind = kind;
  switch (kind)
    {
    case vms_lib_alpha:
      tdata->ver = LBR_MAJORID;
      tdata->mhd_size = offsetof (struct vms_mhd, pad1);
      tdata->type = LBR__C_TYP_EOBJ;
      break;
    case vms_lib_ia64:
      tdata->ver = LBR_ELFMAJORID;
      tdata->mhd_size = sizeof (struct vms_mhd);
      tdata->type = LBR__C_TYP_IOBJ;
      break;
    default:
      abort ();
    }

  tdata->nbr_modules = 0;
  tdata->artdata.symdef_count = 0;
  tdata->modules = NULL;
  tdata->artdata.symdefs = NULL;
  tdata->cache = NULL;

  return TRUE;
}

bfd_boolean
_bfd_vms_lib_alpha_mkarchive (bfd *abfd)
{
  return _bfd_vms_lib_mkarchive (abfd, vms_lib_alpha);
}

bfd_boolean
_bfd_vms_lib_ia64_mkarchive (bfd *abfd)
{
  return _bfd_vms_lib_mkarchive (abfd, vms_lib_ia64);
}

/* 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, unsigned char *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 *vbuf, file_ptr nbytes)
{
  struct vms_lib_iovec *vec = (struct vms_lib_iovec *) abfd->iostream;
  file_ptr res;
  file_ptr chunk;
  unsigned char *buf = (unsigned char *)vbuf;

  /* 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)
            {
              *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,
               void **map_addr ATTRIBUTE_UNUSED,
               bfd_size_type *map_len 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;
  unsigned 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;
  char *name;

  /* 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_zmalloc (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;
    }

  /* Set filename.  */
  name = tdata->modules[modidx].name;
  switch (tdata->type)
    {
    case LBR__C_TYP_IOBJ:
    case LBR__C_TYP_EOBJ:
      /* For object archives, append .obj to mimic standard behaviour.  */
      {
	size_t namelen = strlen (name);
	char *name1 = bfd_alloc (res, namelen + 4 + 1);
	memcpy (name1, name, namelen);
	strcpy (name1 + namelen, ".obj");
	name = name1;
      }
      break;
    default:
      break;
    }
  res->filename = xstrdup (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 lib_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
lib_index_cmp (const void *lv, const void *rv)
{
  const struct lib_index *l = lv;
  const struct lib_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 lib_index *idx, bfd_boolean is_elfidx)
{
  if (is_elfidx)
    {
      /* 9 is the size of struct vms_elfidx without keyname.  */
      if (idx->namlen > MAX_KEYLEN)
        return 9 + sizeof (struct vms_kbn);
      else
        return 9 + idx->namlen;
    }
  else
    {
      /* 7 is the size of struct vms_idx without keyname.  */
      return 7 + idx->namlen;
    }
}

/* Write the index composed by NBR symbols contained in IDX.
   VBN is the first vbn to be used, and will contain on return the last vbn.
   Can be called with ABFD set to NULL just to size the index.
   If not null, TOPVBN will be assigned to the vbn of the root index tree.
   IS_ELFIDX is true for elfidx (ie ia64) indexes layout.
   Return TRUE on success.  */

static bfd_boolean
vms_write_index (bfd *abfd,
                 struct lib_index *idx, unsigned int nbr, unsigned int *vbn,
                 unsigned int *topvbn, bfd_boolean is_elfidx)
{
  /* The index is organized as a tree.  This function implements a naive
     algorithm to balance the tree: it fills the leaves, and create a new
     branch when all upper leaves and branches are full.  We only keep in
     memory a path to the current leaf.  */
  unsigned int i;
  int j;
  int level;
  /* Disk blocks for the current path.  */
  struct vms_indexdef *rblk[MAX_LEVEL];
  /* Info on the current blocks.  */
  struct idxblk
  {
    unsigned int vbn;		/* VBN of the block.  */
    /* The last entry is identified so that it could be copied to the
       parent block.  */
    unsigned short len;		/* Length up to the last entry.  */
    unsigned short lastlen;	/* Length of the last entry.  */
  } blk[MAX_LEVEL];

  /* The kbn blocks are used to store long symbol names.  */
  unsigned int kbn_sz = 0;   /* Number of bytes available in the kbn block.  */
  unsigned int kbn_vbn = 0;  /* VBN of the kbn block.  */
  unsigned char *kbn_blk = NULL; /* Contents of the kbn block.  */

  if (nbr == 0)
    {
      /* No entries.  Very easy to handle.  */
      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 lib_index), lib_index_cmp);
    }

  /* Allocate first index block.  */
  level = 1;
  if (abfd != NULL)
    rblk[0] = bfd_zmalloc (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;
      int flush = 0;
      unsigned int key_vbn = 0;
      unsigned int key_off = 0;

      idxlen = get_idxlen (idx, is_elfidx);

      if (is_elfidx && idx->namlen > MAX_KEYLEN)
        {
          /* If the key (ie name) is too long, write it in the kbn block.  */
          unsigned int kl = idx->namlen;
          unsigned int kl_chunk;
          const char *key = idx->name;

          /* Write the key in the kbn, chunk after chunk.  */
          do
            {
              if (kbn_sz < sizeof (struct vms_kbn))
                {
                  /* Not enough room in the kbn block.  */
                  if (abfd != NULL)
                    {
                      /* Write it to the disk (if there is one).  */
                      if (kbn_vbn != 0)
                        {
                          if (vms_write_block (abfd, kbn_vbn, kbn_blk) != TRUE)
                            return FALSE;
                        }
                      else
                        {
                          kbn_blk = bfd_malloc (VMS_BLOCK_SIZE);
                          if (kbn_blk == NULL)
                            return FALSE;
                        }
                      *(unsigned short *)kbn_blk = 0;
                    }
                  /* Allocate a new block for the keys.  */
                  kbn_vbn = (*vbn)++;
                  kbn_sz = VMS_BLOCK_SIZE - 2;
                }
              /* Size of the chunk written to the current key block.  */
              if (kl + sizeof (struct vms_kbn) > kbn_sz)
                kl_chunk = kbn_sz - sizeof (struct vms_kbn);
              else
                kl_chunk = kl;

              if (kbn_blk != NULL)
                {
                  struct vms_kbn *kbn;

                  kbn = (struct vms_kbn *)(kbn_blk + VMS_BLOCK_SIZE - kbn_sz);

                  if (key_vbn == 0)
                    {
                      /* Save the rfa of the first chunk.  */
                      key_vbn = kbn_vbn;
                      key_off = VMS_BLOCK_SIZE - kbn_sz;
                    }

                  bfd_putl16 (kl_chunk, kbn->keylen);
                  if (kl_chunk == kl)
                    {
                      /* No next chunk.  */
                      bfd_putl32 (0, kbn->rfa.vbn);
                      bfd_putl16 (0, kbn->rfa.offset);
                    }
                  else
                    {
                      /* Next chunk will be at the start of the next block.  */
                      bfd_putl32 (*vbn, kbn->rfa.vbn);
                      bfd_putl16 (2, kbn->rfa.offset);
                    }
                  memcpy ((char *)(kbn + 1), key, kl_chunk);
                  key += kl_chunk;
                }
              kl -= kl_chunk;
              kl_chunk = (kl_chunk + 1) & ~1;	  /* Always align.  */
              kbn_sz -= kl_chunk + sizeof (struct vms_kbn);
            }
          while (kl > 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_zmalloc (sizeof (struct vms_indexdef));
                      bfd_putl32 (*vbn, rblk[j]->parent);
                    }
                  blk[level].vbn = (*vbn)++;
                  blk[level].len = 0;
                  blk[level].lastlen = blk[j].lastlen;

                  level++;
                }

              /* Update parent block: write the last entry from the current
		 block.  */
              if (abfd != NULL)
                {
                  struct vms_rfa *rfa;

		  /* Pointer to the last entry in parent block.  */
		  rfa = (struct vms_rfa *)(rblk[j + 1]->keys + blk[j + 1].len);

                  /* Copy the whole entry.  */
		  BFD_ASSERT (blk[j + 1].lastlen == blk[j].lastlen);
                  memcpy (rfa, rblk[j]->keys + blk[j].len, blk[j].lastlen);
                  /* Fix the entry (which in always the first field of an
		     entry.  */
                  bfd_putl32 (blk[j].vbn, rfa->vbn);
                  bfd_putl16 (RFADEF__C_INDEX, 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 + 1].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 (vms_write_block (abfd, blk[j].vbn, rblk[j]) != TRUE)
                    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)
            {
	      /* Keep the previous last entry.  */
              blk[j].len += blk[j].lastlen;

              if (abfd != NULL)
                {
                  struct vms_rfa *rfa;

                  rfa = (struct vms_rfa *)(rblk[j]->keys + blk[j].len);
                  bfd_putl32 ((idx->abfd->proxy_origin / VMS_BLOCK_SIZE) + 1,
                              rfa->vbn);
                  bfd_putl16
                    ((idx->abfd->proxy_origin % VMS_BLOCK_SIZE)
                     + (is_elfidx ? 0 : DATA__DATA),
                     rfa->offset);

                  if (is_elfidx)
                    {
                      /* Use elfidx format.  */
                      struct vms_elfidx *en = (struct vms_elfidx *)rfa;

                      en->flags = 0;
                      if (key_vbn != 0)
                        {
                          /* Long symbol name.  */
                          struct vms_kbn *k = (struct vms_kbn *)(en->keyname);
                          bfd_putl16 (sizeof (struct vms_kbn), en->keylen);
                          bfd_putl16 (idx->namlen, k->keylen);
                          bfd_putl32 (key_vbn, k->rfa.vbn);
                          bfd_putl16 (key_off, k->rfa.offset);
                          en->flags |= ELFIDX__SYMESC;
                        }
                      else
                        {
                          bfd_putl16 (idx->namlen, en->keylen);
                          memcpy (en->keyname, idx->name, idx->namlen);
                        }
                    }
                  else
                    {
                      /* Use idx format.  */
                      struct vms_idx *en = (struct vms_idx *)rfa;
                      en->keylen = idx->namlen;
                      memcpy (en->keyname, idx->name, idx->namlen);
                    }
                }
	    }
	  /* The last added key can now be the last one all blocks in the
	     path.  */
	  blk[j].lastlen = idxlen;
        }
    }

  /* Save VBN of the root.  */
  if (topvbn != NULL)
    *topvbn = blk[level - 1].vbn;

  if (abfd == NULL)
    return TRUE;

  /* Flush.  */
  for (j = 1; j < level; j++)
    {
      /* Update parent block: write the new entry.  */
      unsigned char *en;
      unsigned char *par;
      struct vms_rfa *rfa;

      en = rblk[j - 1]->keys + blk[j - 1].len;
      par = rblk[j]->keys + blk[j].len;
      BFD_ASSERT (blk[j].lastlen == blk[j - 1].lastlen);
      memcpy (par, en, blk[j - 1].lastlen);
      rfa = (struct vms_rfa *)par;
      bfd_putl32 (blk[j - 1].vbn, rfa->vbn);
      bfd_putl16 (RFADEF__C_INDEX, rfa->offset);
    }

  for (j = 0; j < level; j++)
    {
      /* Write this block on the disk.  */
      bfd_putl16 (blk[j].len + blk[j].lastlen, rblk[j]->used);
      if (vms_write_block (abfd, blk[j].vbn, rblk[j]) != TRUE)
        return FALSE;

      free (rblk[j]);
    }

  /* Write the last kbn (if any).  */
  if (kbn_vbn != 0)
    {
      if (vms_write_block (abfd, kbn_vbn, kbn_blk) != TRUE)
        return FALSE;
      free (kbn_blk);
    }

  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 lib_index *modules,
                        unsigned int *res_cnt,
                        struct lib_index **res)
{
  unsigned int i;
  asymbol **syms = NULL;
  long syms_max = 0;
  struct lib_index *map = NULL;
  unsigned int map_max = 1024;		/* Fine initial default.  */
  unsigned int map_count = 0;

  map = (struct lib_index *) bfd_malloc (map_max * sizeof (struct lib_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 lib_index *new_map;

                  /* This symbol will go into the archive header.  */
                  if (map_count == map_max)
                    {
                      map_max *= 2;
                      new_map = (struct lib_index *)
                        bfd_realloc (map, map_max * sizeof (struct lib_index));
                      if (new_map == NULL)
                        goto error_return;
                      map = new_map;
                    }

                  map[map_count].abfd = current;
                  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 lib_index *modules;
  unsigned int nbr_symbols;
  struct lib_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;
  bfd_boolean is_elfidx = tdata->kind == vms_lib_ia64;
  unsigned int max_keylen = is_elfidx ? MAX_EKEYLEN : MAX_KEYLEN;

  /* 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 lib_index));
  if (modules == NULL)
    return FALSE;

  for (current = arch->archive_head, i = 0;
       current != NULL;
       current = current->archive_next, i++)
    {
      unsigned 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, is_elfidx))
    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, is_elfidx))
    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;

      if (is_elfidx)
        sz = 0;
      else
        {
          /* Write the MHD as a record (ie, size first).  */
          sz = 2;
          bfd_putl16 (tdata->mhd_size, blk);
        }
      mhd = (struct vms_mhd *)(blk + sz);
      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 += tdata->mhd_size;
      sz = (sz + 1) & ~1;

      /* Rewind the member to be put into the archive.  */
      if (bfd_seek (current, 0, SEEK_SET) != 0)
        goto input_err;

      /* Copy the member into the archive.  */
      if (is_elfidx)
        {
          unsigned int modsize = 0;
          bfd_size_type amt;
          file_ptr off_hdr = off;

          /* Read to complete the first block.  */
          amt = bfd_bread (blk + sz, VMS_BLOCK_SIZE - sz, current);
          if (amt == (bfd_size_type)-1)
            goto input_err;
          modsize = amt;
          if (amt < VMS_BLOCK_SIZE - sz)
            {
              /* The member size is less than a block.  Pad the block.  */
              memset (blk + sz + amt, 0, VMS_BLOCK_SIZE - sz - amt);
            }
          bfd_putl32 (modsize, mhd->modsize);

          /* Write the first block (which contains an mhd).  */
          if (bfd_bwrite (blk, VMS_BLOCK_SIZE, arch) != VMS_BLOCK_SIZE)
            goto input_err;
          off += VMS_BLOCK_SIZE;

          if (amt == VMS_BLOCK_SIZE - sz)
            {
              /* Copy the remaining.  */
              char buffer[DEFAULT_BUFFERSIZE];

              while (1)
                {
                  amt = bfd_bread (buffer, sizeof (buffer), current);
                  if (amt == (bfd_size_type)-1)
                    goto input_err;
                  if (amt == 0)
                    break;
                  modsize += amt;
                  if (amt != sizeof (buffer))
                    {
                      /* Clear the padding.  */
                      memset (buffer + amt, 0, sizeof (buffer) - amt);
                      amt = (amt + VMS_BLOCK_SIZE) & ~(VMS_BLOCK_SIZE - 1);
                    }
                  if (bfd_bwrite (buffer, amt, arch) != amt)
                    goto input_err;
                  off += amt;
                }

              /* Now that the size is known, write the first block (again).  */
              bfd_putl32 (modsize, mhd->modsize);
              if (bfd_seek (arch, off_hdr, SEEK_SET) != 0
                  || bfd_bwrite (blk, VMS_BLOCK_SIZE, arch) != VMS_BLOCK_SIZE)
                goto input_err;
              if (bfd_seek (arch, off, SEEK_SET) != 0)
                goto input_err;
            }
        }
      else
        {
          /* Write the MHD.  */
          if (vms_write_data_block (arch, &data, &off, blk, sz, 0) < 0)
            goto input_err;

          /* Write the member.  */
          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;
            }

          /* Write the end of module marker.  */
          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,
                       is_elfidx) != TRUE)
    return FALSE;
  if (vms_write_index (arch, symbols, nbr_symbols, &vbn, &sym_idx_vbn,
                       is_elfidx) != 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;
    unsigned int saneid;

    memset (blk, 0, sizeof (blk));

    lhd->type = tdata->type;
    lhd->nindex = 2;
    switch (tdata->kind)
      {
      case vms_lib_alpha:
        saneid = LHD_SANEID3;
        break;
      case vms_lib_ia64:
        saneid = LHD_SANEID6;
        break;
      default:
        abort ();
      }
    bfd_putl32 (saneid, lhd->sanity);
    bfd_putl16 (tdata->ver, 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);

    bfd_putl32 (tdata->credat_lo, lhd->credat + 0);
    bfd_putl32 (tdata->credat_hi, lhd->credat + 4);
    vms_raw_get_time (lhd->updtim);

    lhd->mhdusz = tdata->mhd_size - MHD__C_USRDAT;

    bfd_putl32 (nbr_modules + nbr_symbols, lhd->idxcnt);
    bfd_putl32 (nbr_modules, lhd->modcnt);
    bfd_putl32 (nbr_modules, lhd->modhdrs);

    /* Number of blocks for index.  */
    bfd_putl32 (nbr_mod_iblk + nbr_sym_iblk, lhd->idxblks);
    bfd_putl32 (vbn - 1, lhd->hipreal);
    bfd_putl32 (vbn - 1, lhd->hiprusd);

    /* VBN of the next free block.  */
    bfd_putl32 ((off / VMS_BLOCK_SIZE) + 1, lhd->nextvbn);
    bfd_putl32 ((off / VMS_BLOCK_SIZE) + 1, lhd->nextrfa + 0);
    bfd_putl16 (0, lhd->nextrfa + 4);

    /* 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 + 1, idd->keylen);
    bfd_putl16 (mod_idx_vbn, idd->vbn);
    idd++;

    /* Second index (symbols name).  */
    bfd_putl16 (idd_flags, idd->flags);
    bfd_putl16 (max_keylen + 1, idd->keylen);
    bfd_putl16 (sym_idx_vbn, idd->vbn);
    idd++;

    if (vms_write_block (arch, 1, blk) != TRUE)
      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 alpha_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.  */
  0,				/* match priority.  */
  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,

  NULL
};


context:
space:
mode: