bfd/vms-gsd.c

   1 /* vms-gsd.c -- BFD back-end for VAX (openVMS/VAX) and
   2    EVAX (openVMS/Alpha) files.
   3    Copyright 1996, 1997, 1998 Free Software Foundation Inc.
   4
   5    go and read the openVMS linker manual (esp. appendix B)
   6    if you don't know what's going on here :-)
   7
   8    Written by Klaus K"ampf (kkaempf@rmi.de)
   9
  10 This program is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2 of the License, or
  13 (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with this program; if not, write to the Free Software
  22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  23
  24
  25 #include <ctype.h>
  26
  27 #include "bfd.h"
  28 #include "sysdep.h"
  29 #include "bfdlink.h"
  30 #include "libbfd.h"
  31
  32 #include "vms.h"
  33
  34 /*-----------------------------------------------------------------------------*/
  35
  36 /* typical sections for vax object files  */
  37
  38 #define VAX_CODE_NAME           "$CODE"
  39 #define VAX_DATA_NAME           "$DATA"
  40 #define VAX_ADDRESS_DATA_NAME   "$ADDRESS_DATA"
  41
  42 /* typical sections for evax object files  */
  43
  44 #define EVAX_ABS_NAME           "$ABS$"
  45 #define EVAX_CODE_NAME          "$CODE$"
  46 #define EVAX_LINK_NAME          "$LINK$"
  47 #define EVAX_DATA_NAME          "$DATA$"
  48 #define EVAX_BSS_NAME           "$BSS$"
  49 #define EVAX_READONLYADDR_NAME  "$READONLY_ADDR$"
  50 #define EVAX_READONLY_NAME      "$READONLY$"
  51 #define EVAX_LITERAL_NAME       "$LITERAL$"
  52 #define EVAX_COMMON_NAME        "$COMMON$"
  53 #define EVAX_LOCAL_NAME         "$LOCAL$"
  54
  55 struct sec_flags_struct {
  56   char *name;                   /* name of section */
  57   int vflags_always;
  58   flagword flags_always;        /* flags we set always */
  59   int vflags_hassize;
  60   flagword flags_hassize;       /* flags we set if the section has a size > 0 */
  61 };
  62
  63 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 VAX) compatible  */
  64
  65 static struct sec_flags_struct vax_section_flags[] = {
  66   { VAX_CODE_NAME,
  67         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
  68         (SEC_CODE),
  69         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
  70         (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  71   { VAX_DATA_NAME,
  72         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
  73         (SEC_DATA),
  74         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
  75         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  76   { VAX_ADDRESS_DATA_NAME,
  77         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
  78         (SEC_DATA|SEC_READONLY),
  79         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
  80         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  81   { NULL,
  82         (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
  83         (SEC_DATA),
  84         (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
  85         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
  86 };
  87
  88
  89 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 Alpha) compatible  */
  90
  91 static struct sec_flags_struct evax_section_flags[] = {
  92   { EVAX_ABS_NAME,
  93         (EGPS_S_V_SHR),
  94         (SEC_DATA),
  95         (EGPS_S_V_SHR),
  96         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  97   { EVAX_CODE_NAME,
  98         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
  99         (SEC_CODE),
 100         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
 101         (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 102   { EVAX_LITERAL_NAME,
 103         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
 104         (SEC_DATA|SEC_READONLY),
 105         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
 106         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 107   { EVAX_LINK_NAME,
 108         (EGPS_S_V_REL|EGPS_S_V_RD),
 109         (SEC_DATA|SEC_READONLY),
 110         (EGPS_S_V_REL|EGPS_S_V_RD),
 111         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 112   { EVAX_DATA_NAME,
 113         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 114         (SEC_DATA),
 115         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 116         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 117   { EVAX_BSS_NAME,
 118         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 119         (SEC_NO_FLAGS),
 120         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 121         (SEC_IN_MEMORY|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 122   { EVAX_READONLYADDR_NAME,
 123         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
 124         (SEC_DATA|SEC_READONLY),
 125         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
 126         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 127   { EVAX_READONLY_NAME,
 128         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
 129         (SEC_DATA|SEC_READONLY),
 130         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
 131         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 132   { EVAX_LOCAL_NAME,
 133         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 134         (SEC_DATA),
 135         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 136         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 137   { NULL,
 138         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 139         (SEC_DATA),
 140         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 141         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
 142 };
 143
 144 /* Retrieve bfd section flags by name and size  */
 145
 146 static flagword
 147 vms_secflag_by_name (abfd, section_flags, name, size)
 148      bfd *abfd;
 149      struct sec_flags_struct *section_flags;
 150      char *name;
 151      int size;
 152 {
 153   int i = 0;
 154
 155   while (section_flags[i].name != NULL)
 156     {
 157       if ((PRIV(is_vax)?
 158             strcasecmp (name, section_flags[i].name):
 159             strcmp (name, section_flags[i].name)) == 0)
 160         {
 161           if (size > 0)
 162             return section_flags[i].flags_hassize;
 163           else
 164             return section_flags[i].flags_always;
 165         }
 166       i++;
 167     }
 168   if (size > 0)
 169     return section_flags[i].flags_hassize;
 170   return section_flags[i].flags_always;
 171 }
 172
 173
 174 /* Retrieve vms section flags by name and size  */
 175
 176 static flagword
 177 vms_esecflag_by_name (section_flags, name, size)
 178      struct sec_flags_struct *section_flags;
 179      char *name;
 180      int size;
 181 {
 182   int i = 0;
 183
 184   while (section_flags[i].name != NULL)
 185     {
 186       if (strcmp (name, section_flags[i].name) == 0)
 187         {
 188           if (size > 0)
 189             return section_flags[i].vflags_hassize;
 190           else
 191             return section_flags[i].vflags_always;
 192         }
 193       i++;
 194     }
 195   if (size > 0)
 196     return section_flags[i].vflags_hassize;
 197   return section_flags[i].vflags_always;
 198 }
 199
 200 /*-----------------------------------------------------------------------------*/
 201 #if VMS_DEBUG
 202 /* debug */
 203
 204 struct flagdescstruct { char *name; flagword value; };
 205
 206 /* Convert flag to printable string  */
 207
 208 static char *
 209 flag2str(flagdesc, flags)
 210      struct flagdescstruct *flagdesc;
 211      flagword flags;
 212 {
 213
 214   static char res[64];
 215   int next = 0;
 216
 217   res[0] = 0;
 218   while (flagdesc->name != NULL)
 219     {
 220       if ((flags & flagdesc->value) != 0)
 221         {
 222           if (next)
 223             strcat(res, ",");
 224           else
 225             next = 1;
 226           strcat (res, flagdesc->name);
 227         }
 228       flagdesc++;
 229     }
 230   return res;
 231 }
 232 #endif
 233
 234 /*-----------------------------------------------------------------------------*/
 235 /* input routines */
 236
 237 /* Process GSD/EGSD record
 238    return 0 on success, -1 on error  */
 239
 240 int
 241 _bfd_vms_slurp_gsd (abfd, objtype)
 242      bfd *abfd;
 243      int objtype;
 244 {
 245 #if VMS_DEBUG
 246   static struct flagdescstruct gpsflagdesc[] =
 247   {
 248     { "PIC", 0x0001 },
 249     { "LIB", 0x0002 },
 250     { "OVR", 0x0004 },
 251     { "REL", 0x0008 },
 252     { "GBL", 0x0010 },
 253     { "SHR", 0x0020 },
 254     { "EXE", 0x0040 },
 255     { "RD",  0x0080 },
 256     { "WRT", 0x0100 },
 257     { "VEC", 0x0200 },
 258     { "NOMOD", 0x0400 },
 259     { "COM", 0x0800 },
 260     { NULL, 0 }
 261   };
 262
 263   static struct flagdescstruct gsyflagdesc[] =
 264   {
 265     { "WEAK", 0x0001 },
 266     { "DEF",  0x0002 },
 267     { "UNI",  0x0004 },
 268     { "REL",  0x0008 },
 269     { "COMM", 0x0010 },
 270     { "VECEP", 0x0020 },
 271     { "NORM", 0x0040 },
 272     { NULL, 0 }
 273   };
 274 #endif
 275
 276   int gsd_type, gsd_size;
 277   asection *section;
 278   unsigned char *vms_rec;
 279   flagword new_flags, old_flags;
 280   char *name;
 281   asymbol *symbol;
 282   vms_symbol_entry *entry;
 283   unsigned long base_addr;
 284   unsigned long align_addr;
 285   static int psect_idx = 0;
 286
 287 #if VMS_DEBUG
 288   vms_debug (2, "GSD/EGSD (%d/%x)\n", objtype, objtype);
 289 #endif
 290
 291   switch (objtype)
 292     {
 293       case EOBJ_S_C_EGSD:
 294         PRIV(vms_rec) += 8;     /* skip type, size, l_temp */
 295         PRIV(rec_size) -= 8;
 296         break;
 297       case OBJ_S_C_GSD:
 298         PRIV(vms_rec) += 1;
 299         PRIV(rec_size) -= 1;
 300         break;
 301       default:
 302         return -1;
 303     }
 304
 305   /* calculate base address for each section  */
 306   base_addr = 0L;
 307
 308   abfd->symcount = 0;
 309
 310   while (PRIV(rec_size) > 0)
 311     {
 312       vms_rec = PRIV(vms_rec);
 313
 314       if (objtype == OBJ_S_C_GSD)
 315         {
 316           gsd_type = *vms_rec;
 317         }
 318       else
 319         {
 320           _bfd_vms_get_header_values (abfd, vms_rec, &gsd_type, &gsd_size);
 321           gsd_type += EVAX_OFFSET;
 322         }
 323
 324 #if VMS_DEBUG
 325   vms_debug (3, "gsd_type %d\n", gsd_type);
 326 #endif
 327
 328       switch (gsd_type)
 329         {
 330           case GSD_S_C_PSC:
 331             {
 332               /*
 333                * program section definition
 334                */
 335
 336               asection *old_section = 0;
 337
 338 #if VMS_DEBUG
 339   vms_debug (4, "GSD_S_C_PSC\n");
 340 #endif
 341               /* If this section isn't a bfd section.  */
 342
 343               if (PRIV(is_vax) && (psect_idx < (abfd->section_count-1)))
 344                 {
 345                   /* check for temporary section from TIR record.  */
 346
 347                   if (psect_idx < PRIV(section_count))
 348                     old_section = PRIV(sections)[psect_idx];
 349                   else
 350                     old_section = 0;
 351                 }
 352
 353               name = _bfd_vms_save_counted_string (vms_rec + 8);
 354               section = bfd_make_section (abfd, name);
 355               if (!section)
 356                 {
 357                   fprintf (stderr, "bfd_make_section (%s) failed\n", name);
 358                   return -1;
 359                 }
 360               old_flags = bfd_getl16 (vms_rec + 2);
 361               section->_raw_size = bfd_getl32(vms_rec + 4);     /* allocation */
 362               new_flags = vms_secflag_by_name (abfd, vax_section_flags, name, section->_raw_size);
 363               if (old_flags & EGPS_S_V_REL)
 364                 new_flags |= SEC_RELOC;
 365               if (old_flags & GPS_S_M_OVR)
 366                 new_flags |= SEC_IS_COMMON;
 367               if (!bfd_set_section_flags (abfd, section, new_flags))
 368                 {
 369                   fprintf (stderr, "bfd_set_section_flags (%s, %x) failed\n", name, new_flags);
 370                   return -1;
 371                 }
 372               section->alignment_power = vms_rec[1];
 373               align_addr = (1 << section->alignment_power);
 374               if ((base_addr % align_addr) != 0)
 375                 base_addr += (align_addr - (base_addr % align_addr));
 376               section->vma = (bfd_vma)base_addr;
 377               base_addr += section->_raw_size;
 378
 379               /* global section is common symbol  */
 380
 381               if (old_flags & GPS_S_M_GBL)
 382                 {
 383                   entry = _bfd_vms_enter_symbol (abfd, name);
 384                   if (entry == (vms_symbol_entry *)NULL)
 385                     {
 386                       bfd_set_error (bfd_error_no_memory);
 387                       return -1;
 388                     }
 389                   symbol = entry->symbol;
 390
 391                   symbol->value = 0;
 392                   symbol->section = section;
 393                   symbol->flags = (BSF_GLOBAL|BSF_SECTION_SYM|BSF_OLD_COMMON);
 394                 }
 395
 396               /* copy saved contents if old_section set  */
 397
 398               if (old_section != 0)
 399                 {
 400                   section->contents = old_section->contents;
 401                   if (section->_raw_size < old_section->_raw_size)
 402                     {
 403                       fprintf (stderr, "Size mismatch section %s=%d, %s=%d\n", old_section->name, old_section->_raw_size, section->name, section->_raw_size);
 404                       return -1;
 405                     }
 406                   else if (section->_raw_size > old_section->_raw_size)
 407                     {
 408                       section->contents = ((unsigned char *)
 409                                     bfd_realloc (old_section->contents, section->_raw_size));
 410                       if (section->contents == NULL)
 411                         {
 412                           bfd_set_error (bfd_error_no_memory);
 413                           return -1;
 414                         }
 415                     }
 416                 }
 417               else
 418                 {
 419                   section->contents = ((unsigned char *)
 420                                         bfd_malloc (section->_raw_size));
 421                   if (section->contents == NULL)
 422                     {
 423                       bfd_set_error (bfd_error_no_memory);
 424                       return -1;
 425                     }
 426                   memset (section->contents, 0, (size_t)section->_raw_size);
 427                 }
 428               section->_cooked_size = section->_raw_size;
 429 #if VMS_DEBUG
 430               vms_debug (4, "gsd psc %d (%s, flags %04x=%s) ",
 431                          section->index, name, old_flags, flag2str (gpsflagdesc, old_flags));
 432               vms_debug (4, "%d bytes at 0x%08lx (mem %p)\n",
 433                          section->_raw_size, section->vma, section->contents);
 434 #endif
 435
 436               gsd_size = vms_rec[8] + 9;
 437
 438               psect_idx++;
 439             }
 440           break;
 441
 442           case GSD_S_C_EPM:
 443           case GSD_S_C_EPMW:
 444 #if VMS_DEBUG
 445                 vms_debug(4, "gsd epm\n");
 446 #endif
 447           /*FALLTHRU*/
 448           case GSD_S_C_SYM:
 449           case GSD_S_C_SYMW:
 450             {
 451               int name_offset, value_offset;
 452
 453               /*
 454                * symbol specification (definition or reference)
 455                */
 456
 457 #if VMS_DEBUG
 458   vms_debug (4, "GSD_S_C_SYM(W)\n");
 459 #endif
 460               old_flags = bfd_getl16 (vms_rec + 2);
 461               new_flags = BSF_NO_FLAGS;
 462
 463               if (old_flags & GSY_S_M_WEAK)
 464                 new_flags |= BSF_WEAK;
 465
 466               switch (gsd_type)
 467                 {
 468                   case GSD_S_C_EPM:
 469                     name_offset = 11;
 470                     value_offset = 5;
 471                     new_flags |= BSF_FUNCTION;
 472                     break;
 473                   case GSD_S_C_EPMW:
 474                     name_offset = 12;
 475                     value_offset = 6;
 476                     new_flags |= BSF_FUNCTION;
 477                     break;
 478                   case GSD_S_C_SYM:
 479                     if (old_flags & GSY_S_M_DEF)        /* symbol definition */
 480                       name_offset = 9;
 481                     else
 482                       name_offset = 4;
 483                     value_offset = 5;
 484                     break;
 485                   case GSD_S_C_SYMW:
 486                     if (old_flags & GSY_S_M_DEF)        /* symbol definition */
 487                       name_offset = 10;
 488                     else
 489                       name_offset = 5;
 490                     value_offset = 6;
 491                     break;
 492                 }
 493
 494               /* save symbol in vms_symbol_table */
 495
 496               entry = _bfd_vms_enter_symbol (abfd,
 497                         _bfd_vms_save_counted_string (vms_rec + name_offset));
 498               if (entry == (vms_symbol_entry *)NULL)
 499                 {
 500                   bfd_set_error (bfd_error_no_memory);
 501                   return -1;
 502                 }
 503               symbol = entry->symbol;
 504
 505               if (old_flags & GSY_S_M_DEF)      /* symbol definition */
 506                 {
 507                   int psect;
 508
 509                   symbol->value = bfd_getl32 (vms_rec+value_offset);
 510                   if ((gsd_type == GSD_S_C_SYMW)
 511                       || (gsd_type == GSD_S_C_EPMW))
 512                     psect = bfd_getl16 (vms_rec + value_offset - 2);
 513                   else
 514                     psect = vms_rec[value_offset-1];
 515
 516                   symbol->section = (asection *)psect;
 517 #if VMS_DEBUG
 518                   vms_debug(4, "gsd sym def #%d (%s, %d [%p], %04x=%s)\n", abfd->symcount,
 519                                 symbol->name, (int)symbol->section, symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
 520 #endif
 521                 }
 522               else      /* symbol reference */
 523                 {
 524                   symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
 525 #if VMS_DEBUG
 526                   vms_debug (4, "gsd sym ref #%d (%s, %s [%p], %04x=%s)\n", abfd->symcount,
 527                                 symbol->name, symbol->section->name, symbol->section, old_flags, flag2str (gsyflagdesc, old_flags));
 528 #endif
 529                 }
 530
 531               gsd_size = vms_rec[name_offset] + name_offset + 1;
 532               symbol->flags = new_flags;
 533             }
 534
 535           break;
 536
 537           case GSD_S_C_PRO:
 538           case GSD_S_C_PROW:
 539 #if VMS_DEBUG
 540                 vms_debug(4, "gsd pro\n");
 541 #endif
 542           break;
 543           case GSD_S_C_IDC:
 544 #if VMS_DEBUG
 545                 vms_debug(4, "gsd idc\n");
 546 #endif
 547           break;
 548           case GSD_S_C_ENV:
 549 #if VMS_DEBUG
 550                 vms_debug(4, "gsd env\n");
 551 #endif
 552           break;
 553           case GSD_S_C_LSY:
 554 #if VMS_DEBUG
 555                 vms_debug(4, "gsd lsy\n");
 556 #endif
 557           break;
 558           case GSD_S_C_LEPM:
 559 #if VMS_DEBUG
 560                 vms_debug(4, "gsd lepm\n");
 561 #endif
 562           break;
 563           case GSD_S_C_LPRO:
 564 #if VMS_DEBUG
 565                 vms_debug(4, "gsd lpro\n");
 566 #endif
 567           break;
 568           case GSD_S_C_SPSC:
 569 #if VMS_DEBUG
 570                 vms_debug(4, "gsd spsc\n");
 571 #endif
 572           break;
 573           case GSD_S_C_SYMV:
 574 #if VMS_DEBUG
 575                 vms_debug(4, "gsd symv\n");
 576 #endif
 577           break;
 578           case GSD_S_C_EPMV:
 579 #if VMS_DEBUG
 580                 vms_debug(4, "gsd epmv\n");
 581 #endif
 582           break;
 583           case GSD_S_C_PROV:
 584 #if VMS_DEBUG
 585                 vms_debug(4, "gsd prov\n");
 586 #endif
 587           break;
 588
 589         case EGSD_S_C_PSC + EVAX_OFFSET:
 590           {
 591             /* program section definition  */
 592
 593             name = _bfd_vms_save_counted_string (vms_rec+12);
 594             section = bfd_make_section (abfd, name);
 595             if (!section)
 596               return -1;
 597             old_flags = bfd_getl16 (vms_rec + 6);
 598             section->_raw_size = bfd_getl32 (vms_rec + 8);      /* allocation */
 599             new_flags = vms_secflag_by_name (abfd, evax_section_flags, name, (int) section->_raw_size);
 600             if (old_flags & EGPS_S_V_REL)
 601               new_flags |= SEC_RELOC;
 602             if (!bfd_set_section_flags (abfd, section, new_flags))
 603               return -1;
 604             section->alignment_power = vms_rec[4];
 605             align_addr = (1 << section->alignment_power);
 606             if ((base_addr % align_addr) != 0)
 607               base_addr += (align_addr - (base_addr % align_addr));
 608             section->vma = (bfd_vma)base_addr;
 609             base_addr += section->_raw_size;
 610             section->contents = ((unsigned char *)
 611                                  bfd_malloc (section->_raw_size));
 612             if (section->contents == NULL)
 613               return -1;
 614             memset (section->contents, 0, (size_t) section->_raw_size);
 615             section->_cooked_size = section->_raw_size;
 616 #if VMS_DEBUG
 617             vms_debug(4, "egsd psc %d (%s, flags %04x=%s) ",
 618                        section->index, name, old_flags, flag2str(gpsflagdesc, old_flags));
 619             vms_debug(4, "%d bytes at 0x%08lx (mem %p)\n",
 620                        section->_raw_size, section->vma, section->contents);
 621 #endif
 622           }
 623           break;
 624
 625         case EGSD_S_C_SYM + EVAX_OFFSET:
 626           {
 627             /* symbol specification (definition or reference)  */
 628
 629             symbol = _bfd_vms_make_empty_symbol (abfd);
 630             if (symbol == 0)
 631               return -1;
 632
 633             old_flags = bfd_getl16 (vms_rec + 6);
 634             new_flags = BSF_NO_FLAGS;
 635
 636             if (old_flags & EGSY_S_V_WEAK)
 637               new_flags |= BSF_WEAK;
 638
 639             if (vms_rec[6] & EGSY_S_V_DEF)      /* symbol definition */
 640               {
 641                 symbol->name =
 642                   _bfd_vms_save_counted_string (vms_rec+32);
 643                 if (old_flags & EGSY_S_V_NORM)
 644                   {         /* proc def */
 645                     new_flags |= BSF_FUNCTION;
 646                   }
 647                 symbol->value = bfd_getl64 (vms_rec+8);
 648                 symbol->section = (asection *)((unsigned long) bfd_getl32 (vms_rec+28));
 649 #if VMS_DEBUG
 650                 vms_debug(4, "egsd sym def #%d (%s, %d, %04x=%s)\n", abfd->symcount,
 651                            symbol->name, (int)symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
 652 #endif
 653               }
 654             else        /* symbol reference */
 655               {
 656                 symbol->name =
 657                   _bfd_vms_save_counted_string (vms_rec+8);
 658 #if VMS_DEBUG
 659                 vms_debug(4, "egsd sym ref #%d (%s, %04x=%s)\n", abfd->symcount,
 660                            symbol->name, old_flags, flag2str(gsyflagdesc, old_flags));
 661 #endif
 662                 symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
 663               }
 664
 665             symbol->flags = new_flags;
 666
 667             /* save symbol in vms_symbol_table  */
 668
 669             entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV(vms_symbol_table), symbol->name, true, false);
 670             if (entry == (vms_symbol_entry *)NULL)
 671               {
 672                 bfd_set_error (bfd_error_no_memory);
 673                 return -1;
 674               }
 675             if (entry->symbol != (asymbol *)NULL)
 676               {                                 /* FIXME ?, DEC C generates this */
 677 #if VMS_DEBUG
 678                 vms_debug(4, "EGSD_S_C_SYM: duplicate \"%s\"\n", symbol->name);
 679 #endif
 680               }
 681             else
 682               {
 683                 entry->symbol = symbol;
 684                 PRIV(gsd_sym_count)++;
 685                 abfd->symcount++;
 686               }
 687           }
 688           break;
 689
 690         case EGSD_S_C_IDC + EVAX_OFFSET:
 691           break;
 692
 693         default:
 694           (*_bfd_error_handler) (_("unknown gsd/egsd subtype %d"), gsd_type);
 695           bfd_set_error (bfd_error_bad_value);
 696           return -1;
 697
 698         } /* switch */
 699
 700       PRIV(rec_size) -= gsd_size;
 701       PRIV(vms_rec) += gsd_size;
 702
 703     } /* while (recsize > 0) */
 704
 705   if (abfd->symcount > 0)
 706     abfd->flags |= HAS_SYMS;
 707
 708   return 0;
 709 }
 710
 711 /*-----------------------------------------------------------------------------*/
 712 /* output routines */
 713
 714 /* Write section and symbol directory of bfd abfd  */
 715
 716 int
 717 _bfd_vms_write_gsd (abfd, objtype)
 718      bfd *abfd;
 719      int objtype;
 720 {
 721   asection *section;
 722   asymbol *symbol;
 723   int symnum;
 724   int last_index = -1;
 725   char dummy_name[10];
 726   char *sname;
 727   flagword new_flags, old_flags;
 728   char *nptr, *uptr;
 729
 730 #if VMS_DEBUG
 731   vms_debug (2, "vms_write_gsd (%p, %d)\n", abfd, objtype);
 732 #endif
 733
 734   /* output sections  */
 735
 736   section = abfd->sections;
 737 #if VMS_DEBUG
 738   vms_debug (3, "%d sections found\n", abfd->section_count);
 739 #endif
 740
 741   /* egsd is quadword aligned  */
 742
 743   _bfd_vms_output_alignment (abfd, 8);
 744
 745   _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 746   _bfd_vms_output_long (abfd, 0);
 747   _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 748
 749   while (section != 0)
 750     {
 751 #if VMS_DEBUG
 752   vms_debug (3, "Section #%d %s, %d bytes\n", section->index, section->name, (int)section->_raw_size);
 753 #endif
 754
 755         /* 13 bytes egsd, max 31 chars name -> should be 44 bytes */
 756       if (_bfd_vms_output_check (abfd, 64) < 0)
 757         {
 758           _bfd_vms_output_pop (abfd);
 759           _bfd_vms_output_end (abfd);
 760           _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 761           _bfd_vms_output_long (abfd, 0);
 762           _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 763         }
 764
 765         /* Create dummy sections to keep consecutive indices */
 766
 767       while (section->index - last_index > 1)
 768         {
 769 #if VMS_DEBUG
 770           vms_debug (3, "index %d, last %d\n", section->index, last_index);
 771 #endif
 772           _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
 773           _bfd_vms_output_short (abfd, 0);
 774           _bfd_vms_output_short (abfd, 0);
 775           _bfd_vms_output_long (abfd, 0);
 776           sprintf (dummy_name, ".DUMMY%02d", last_index);
 777           _bfd_vms_output_counted (abfd, dummy_name);
 778           _bfd_vms_output_flush (abfd);
 779           last_index++;
 780         }
 781
 782       /* Don't know if this is neccesary for the linker but for now it keeps
 783          vms_slurp_gsd happy  */
 784
 785       sname = (char *)section->name;
 786       if (*sname == '.')
 787         {
 788           sname++;
 789           if ((*sname == 't') && (strcmp (sname, "text") == 0))
 790             sname = PRIV(is_vax)?VAX_CODE_NAME:EVAX_CODE_NAME;
 791           else if ((*sname == 'd') && (strcmp (sname, "data") == 0))
 792             sname = PRIV(is_vax)?VAX_DATA_NAME:EVAX_DATA_NAME;
 793           else if ((*sname == 'b') && (strcmp (sname, "bss") == 0))
 794             sname = EVAX_BSS_NAME;
 795           else if ((*sname == 'l') && (strcmp (sname, "link") == 0))
 796             sname = EVAX_LINK_NAME;
 797           else if ((*sname == 'r') && (strcmp (sname, "rdata") == 0))
 798             sname = EVAX_READONLY_NAME;
 799           else if ((*sname == 'l') && (strcmp (sname, "literal") == 0))
 800             sname = EVAX_LITERAL_NAME;
 801           else if ((*sname == 'c') && (strcmp (sname, "comm") == 0))
 802             sname = EVAX_COMMON_NAME;
 803           else if ((*sname == 'l') && (strcmp (sname, "lcomm") == 0))
 804             sname = EVAX_LOCAL_NAME;
 805         }
 806       else
 807         sname = _bfd_vms_length_hash_symbol (abfd, sname, EOBJ_S_C_SECSIZ);
 808
 809       _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
 810       _bfd_vms_output_short (abfd, section->alignment_power & 0xff);
 811       if (bfd_is_com_section (section))
 812         {
 813           new_flags = (EGPS_S_V_OVR|EGPS_S_V_REL|EGPS_S_V_GBL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD|EGPS_S_V_COM);
 814         }
 815       else
 816         {
 817           new_flags = vms_esecflag_by_name (evax_section_flags, sname, section->_raw_size);
 818         }
 819       _bfd_vms_output_short (abfd, new_flags);
 820       _bfd_vms_output_long (abfd, section->_raw_size);
 821       _bfd_vms_output_counted (abfd, sname);
 822       _bfd_vms_output_flush (abfd);
 823
 824       last_index = section->index;
 825       section = section->next;
 826     }
 827
 828   /* output symbols  */
 829
 830 #if VMS_DEBUG
 831   vms_debug (3, "%d symbols found\n", abfd->symcount);
 832 #endif
 833
 834   bfd_set_start_address (abfd, (bfd_vma)-1);
 835
 836   for (symnum = 0; symnum < abfd->symcount; symnum++)
 837     {
 838
 839       symbol = abfd->outsymbols[symnum];
 840       if (*(symbol->name) == '_')
 841         {
 842           if (strcmp (symbol->name, "__main") == 0)
 843             bfd_set_start_address (abfd, (bfd_vma)symbol->value);
 844         }
 845       old_flags = symbol->flags;
 846
 847       if (old_flags & BSF_FILE)
 848         continue;
 849
 850       if (((old_flags & (BSF_GLOBAL|BSF_WEAK)) == 0)    /* not xdef */
 851           && (!bfd_is_und_section (symbol->section)))   /* and not xref */
 852         continue;                                       /* dont output */
 853
 854       /* 13 bytes egsd, max 64 chars name -> should be 77 bytes  */
 855
 856       if (_bfd_vms_output_check (abfd, 80) < 0)
 857         {
 858           _bfd_vms_output_pop (abfd);
 859           _bfd_vms_output_end (abfd);
 860           _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 861           _bfd_vms_output_long (abfd, 0);
 862           _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 863         }
 864
 865       _bfd_vms_output_begin (abfd, EGSD_S_C_SYM, -1);
 866
 867       _bfd_vms_output_short (abfd, 0);                  /* data type, alignment */
 868
 869       new_flags = 0;
 870
 871       if (old_flags & BSF_WEAK)
 872         new_flags |= EGSY_S_V_WEAK;
 873       if (bfd_is_com_section (symbol->section))         /* .comm  */
 874         new_flags |= (EGSY_S_V_WEAK|EGSY_S_V_COMM);
 875
 876       if (old_flags & BSF_FUNCTION)
 877         {
 878           new_flags |= EGSY_S_V_NORM;
 879           new_flags |= EGSY_S_V_REL;
 880         }
 881       if (old_flags & (BSF_GLOBAL|BSF_WEAK))
 882         {
 883           new_flags |= EGSY_S_V_DEF;
 884           if (!bfd_is_abs_section (symbol->section))
 885             new_flags |= EGSY_S_V_REL;
 886         }
 887       _bfd_vms_output_short (abfd, new_flags);
 888
 889       if (old_flags & (BSF_GLOBAL|BSF_WEAK))            /* symbol definition */
 890         {
 891           if (old_flags & BSF_FUNCTION)
 892             {
 893               _bfd_vms_output_quad (abfd, symbol->value);
 894               _bfd_vms_output_quad (abfd,
 895                                      ((asymbol *)(symbol->udata.p))->value);
 896               _bfd_vms_output_long (abfd,
 897                                      (((asymbol *)(symbol->udata.p))
 898                                       ->section->index));
 899               _bfd_vms_output_long (abfd, symbol->section->index);
 900             }
 901           else
 902             {
 903               _bfd_vms_output_quad (abfd, symbol->value);       /* L_VALUE */
 904               _bfd_vms_output_quad (abfd, 0);                   /* L_CODE_ADDRESS */
 905               _bfd_vms_output_long (abfd, 0);                   /* L_CA_PSINDX */
 906               _bfd_vms_output_long (abfd, symbol->section->index);/* L_PSINDX */
 907             }
 908         }
 909       _bfd_vms_output_counted (abfd, _bfd_vms_length_hash_symbol (abfd, symbol->name, EOBJ_S_C_SYMSIZ));
 910
 911       _bfd_vms_output_flush (abfd);
 912
 913     }
 914
 915   _bfd_vms_output_alignment (abfd, 8);
 916   _bfd_vms_output_pop (abfd);
 917   _bfd_vms_output_end (abfd);
 918
 919   return 0;
 920 }