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, 1999, 2000, 2001, 2002, 2003, 2004, 2005
   4    Free Software Foundation, Inc.
   5
   6    go and read the openVMS linker manual (esp. appendix B)
   7    if you don't know what's going on here :-)
   8
   9    Written by Klaus K"ampf (kkaempf@rmi.de)
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  24
  25 #include "bfd.h"
  26 #include "sysdep.h"
  27 #include "bfdlink.h"
  28 #include "libbfd.h"
  29
  30 #include "vms.h"
  31
  32 /*-----------------------------------------------------------------------------*/
  33
  34 /* typical sections for vax object files  */
  35
  36 #define VAX_CODE_NAME           "$CODE"
  37 #define VAX_DATA_NAME           "$DATA"
  38 #define VAX_ADDRESS_DATA_NAME   "$ADDRESS_DATA"
  39
  40 /* typical sections for evax object files  */
  41
  42 #define EVAX_ABS_NAME           "$ABS$"
  43 #define EVAX_CODE_NAME          "$CODE$"
  44 #define EVAX_LINK_NAME          "$LINK$"
  45 #define EVAX_DATA_NAME          "$DATA$"
  46 #define EVAX_BSS_NAME           "$BSS$"
  47 #define EVAX_READONLYADDR_NAME  "$READONLY_ADDR$"
  48 #define EVAX_READONLY_NAME      "$READONLY$"
  49 #define EVAX_LITERAL_NAME       "$LITERAL$"
  50 #define EVAX_COMMON_NAME        "$COMMON$"
  51 #define EVAX_LOCAL_NAME         "$LOCAL$"
  52
  53 struct sec_flags_struct {
  54   char *name;                   /* name of section */
  55   int vflags_always;
  56   flagword flags_always;        /* flags we set always */
  57   int vflags_hassize;
  58   flagword flags_hassize;       /* flags we set if the section has a size > 0 */
  59 };
  60
  61 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 VAX) compatible  */
  62
  63 static struct sec_flags_struct vax_section_flags[] = {
  64   { VAX_CODE_NAME,
  65         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
  66         (SEC_CODE),
  67         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
  68         (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  69   { VAX_DATA_NAME,
  70         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
  71         (SEC_DATA),
  72         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
  73         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  74   { VAX_ADDRESS_DATA_NAME,
  75         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
  76         (SEC_DATA|SEC_READONLY),
  77         (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
  78         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  79   { NULL,
  80         (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
  81         (SEC_DATA),
  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_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
  84 };
  85
  86 /* These flags are deccrtl/vaxcrtl (openVMS 6.2 Alpha) compatible  */
  87
  88 static struct sec_flags_struct evax_section_flags[] = {
  89   { EVAX_ABS_NAME,
  90         (EGPS_S_V_SHR),
  91         (SEC_DATA),
  92         (EGPS_S_V_SHR),
  93         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  94   { EVAX_CODE_NAME,
  95         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
  96         (SEC_CODE),
  97         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
  98         (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  99   { EVAX_LITERAL_NAME,
 100         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
 101         (SEC_DATA|SEC_READONLY),
 102         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
 103         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 104   { EVAX_LINK_NAME,
 105         (EGPS_S_V_REL|EGPS_S_V_RD),
 106         (SEC_DATA|SEC_READONLY),
 107         (EGPS_S_V_REL|EGPS_S_V_RD),
 108         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 109   { EVAX_DATA_NAME,
 110         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 111         (SEC_DATA),
 112         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 113         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 114   { EVAX_BSS_NAME,
 115         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 116         (SEC_NO_FLAGS),
 117         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
 118         (SEC_IN_MEMORY|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 119   { EVAX_READONLYADDR_NAME,
 120         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
 121         (SEC_DATA|SEC_READONLY),
 122         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
 123         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 124   { EVAX_READONLY_NAME,
 125         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
 126         (SEC_DATA|SEC_READONLY),
 127         (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
 128         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
 129   { EVAX_LOCAL_NAME,
 130         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 131         (SEC_DATA),
 132         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 133         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
 134   { NULL,
 135         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 136         (SEC_DATA),
 137         (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
 138         (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
 139 };
 140
 141 static flagword vms_secflag_by_name PARAMS ((bfd *, struct sec_flags_struct *, char *, int));
 142 static flagword vms_esecflag_by_name PARAMS ((struct sec_flags_struct *, char *, int));
 143
 144 /* Retrieve bfd section flags by name and size  */
 145
 146 static flagword
 147 vms_secflag_by_name (abfd, section_flags, name, hassize)
 148      bfd *abfd;
 149      struct sec_flags_struct *section_flags;
 150      char *name;
 151      int hassize;
 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 (hassize)
 162             return section_flags[i].flags_hassize;
 163           else
 164             return section_flags[i].flags_always;
 165         }
 166       i++;
 167     }
 168   if (hassize)
 169     return section_flags[i].flags_hassize;
 170   return section_flags[i].flags_always;
 171 }
 172
 173 /* Retrieve vms section flags by name and size  */
 174
 175 static flagword
 176 vms_esecflag_by_name (section_flags, name, hassize)
 177      struct sec_flags_struct *section_flags;
 178      char *name;
 179      int hassize;
 180 {
 181   int i = 0;
 182
 183   while (section_flags[i].name != NULL)
 184     {
 185       if (strcmp (name, section_flags[i].name) == 0)
 186         {
 187           if (hassize)
 188             return section_flags[i].vflags_hassize;
 189           else
 190             return section_flags[i].vflags_always;
 191         }
 192       i++;
 193     }
 194   if (hassize)
 195     return section_flags[i].vflags_hassize;
 196   return section_flags[i].vflags_always;
 197 }
 198
 199 /*-----------------------------------------------------------------------------*/
 200 #if VMS_DEBUG
 201 /* debug */
 202
 203 struct flagdescstruct { char *name; flagword value; };
 204
 205 /* Convert flag to printable string  */
 206
 207 static char *
 208 flag2str(flagdesc, flags)
 209      struct flagdescstruct *flagdesc;
 210      flagword flags;
 211 {
 212
 213   static char res[64];
 214   int next = 0;
 215
 216   res[0] = 0;
 217   while (flagdesc->name != NULL)
 218     {
 219       if ((flags & flagdesc->value) != 0)
 220         {
 221           if (next)
 222             strcat(res, ",");
 223           else
 224             next = 1;
 225           strcat (res, flagdesc->name);
 226         }
 227       flagdesc++;
 228     }
 229   return res;
 230 }
 231 #endif
 232
 233 /*-----------------------------------------------------------------------------*/
 234 /* input routines */
 235
 236 /* Process GSD/EGSD record
 237    return 0 on success, -1 on error  */
 238
 239 int
 240 _bfd_vms_slurp_gsd (abfd, objtype)
 241      bfd *abfd;
 242      int objtype;
 243 {
 244 #if VMS_DEBUG
 245   static struct flagdescstruct gpsflagdesc[] =
 246   {
 247     { "PIC", 0x0001 },
 248     { "LIB", 0x0002 },
 249     { "OVR", 0x0004 },
 250     { "REL", 0x0008 },
 251     { "GBL", 0x0010 },
 252     { "SHR", 0x0020 },
 253     { "EXE", 0x0040 },
 254     { "RD",  0x0080 },
 255     { "WRT", 0x0100 },
 256     { "VEC", 0x0200 },
 257     { "NOMOD", 0x0400 },
 258     { "COM", 0x0800 },
 259     { NULL, 0 }
 260   };
 261
 262   static struct flagdescstruct gsyflagdesc[] =
 263   {
 264     { "WEAK", 0x0001 },
 265     { "DEF",  0x0002 },
 266     { "UNI",  0x0004 },
 267     { "REL",  0x0008 },
 268     { "COMM", 0x0010 },
 269     { "VECEP", 0x0020 },
 270     { "NORM", 0x0040 },
 271     { NULL, 0 }
 272   };
 273 #endif
 274
 275   int gsd_type, gsd_size;
 276   asection *section;
 277   unsigned char *vms_rec;
 278   flagword new_flags, old_flags;
 279   char *name;
 280   asymbol *symbol;
 281   vms_symbol_entry *entry;
 282   unsigned long base_addr;
 283   unsigned long align_addr;
 284   static unsigned int psect_idx = 0;
 285
 286 #if VMS_DEBUG
 287   vms_debug (2, "GSD/EGSD (%d/%x)\n", objtype, objtype);
 288 #endif
 289
 290   switch (objtype)
 291     {
 292     case EOBJ_S_C_EGSD:
 293       PRIV(vms_rec) += 8;       /* skip type, size, l_temp */
 294       PRIV(rec_size) -= 8;
 295       break;
 296     case OBJ_S_C_GSD:
 297       PRIV(vms_rec) += 1;
 298       PRIV(rec_size) -= 1;
 299       break;
 300     default:
 301       return -1;
 302     }
 303
 304   /* calculate base address for each section  */
 305   base_addr = 0L;
 306
 307   abfd->symcount = 0;
 308
 309   while (PRIV(rec_size) > 0)
 310     {
 311       vms_rec = PRIV(vms_rec);
 312
 313       if (objtype == OBJ_S_C_GSD)
 314         {
 315           gsd_type = *vms_rec;
 316         }
 317       else
 318         {
 319           _bfd_vms_get_header_values (abfd, vms_rec, &gsd_type, &gsd_size);
 320           gsd_type += EVAX_OFFSET;
 321         }
 322
 323 #if VMS_DEBUG
 324   vms_debug (3, "gsd_type %d\n", gsd_type);
 325 #endif
 326
 327       switch (gsd_type)
 328         {
 329           case GSD_S_C_PSC:
 330             {
 331               /*
 332                * program section definition
 333                */
 334
 335               asection *old_section = 0;
 336
 337 #if VMS_DEBUG
 338   vms_debug (4, "GSD_S_C_PSC\n");
 339 #endif
 340               /* If this section isn't a bfd section.  */
 341
 342               if (PRIV(is_vax) && (psect_idx < (abfd->section_count-1)))
 343                 {
 344                   /* check for temporary section from TIR record.  */
 345
 346                   if (psect_idx < PRIV(section_count))
 347                     old_section = PRIV(sections)[psect_idx];
 348                   else
 349                     old_section = 0;
 350                 }
 351
 352               name = _bfd_vms_save_counted_string (vms_rec + 8);
 353               section = bfd_make_section (abfd, name);
 354               if (!section)
 355                 {
 356                   (*_bfd_error_handler) (_("bfd_make_section (%s) failed"),
 357                                          name);
 358                   return -1;
 359                 }
 360               old_flags = bfd_getl16 (vms_rec + 2);
 361               section->size = bfd_getl32 (vms_rec + 4);  /* allocation */
 362               new_flags = vms_secflag_by_name (abfd, vax_section_flags, name,
 363                                                section->size > 0);
 364               if (old_flags & EGPS_S_V_REL)
 365                 new_flags |= SEC_RELOC;
 366               if (old_flags & GPS_S_M_OVR)
 367                 new_flags |= SEC_IS_COMMON;
 368               if (!bfd_set_section_flags (abfd, section, new_flags))
 369                 {
 370                   (*_bfd_error_handler)
 371                     (_("bfd_set_section_flags (%s, %x) failed"),
 372                      name, new_flags);
 373                   return -1;
 374                 }
 375               section->alignment_power = vms_rec[1];
 376               align_addr = (1 << section->alignment_power);
 377               if ((base_addr % align_addr) != 0)
 378                 base_addr += (align_addr - (base_addr % align_addr));
 379               section->vma = (bfd_vma)base_addr;
 380               base_addr += section->size;
 381
 382               /* global section is common symbol  */
 383
 384               if (old_flags & GPS_S_M_GBL)
 385                 {
 386                   entry = _bfd_vms_enter_symbol (abfd, name);
 387                   if (entry == (vms_symbol_entry *)NULL)
 388                     {
 389                       bfd_set_error (bfd_error_no_memory);
 390                       return -1;
 391                     }
 392                   symbol = entry->symbol;
 393
 394                   symbol->value = 0;
 395                   symbol->section = section;
 396                   symbol->flags = (BSF_GLOBAL|BSF_SECTION_SYM|BSF_OLD_COMMON);
 397                 }
 398
 399               /* copy saved contents if old_section set  */
 400
 401               if (old_section != 0)
 402                 {
 403                   section->contents = old_section->contents;
 404                   if (section->size < old_section->size)
 405                     {
 406                       (*_bfd_error_handler)
 407                         (_("Size mismatch section %s=%lx, %s=%lx"),
 408                          old_section->name,
 409                          (unsigned long) old_section->size,
 410                          section->name,
 411                          (unsigned long) section->size);
 412                       return -1;
 413                     }
 414                   else if (section->size > old_section->size)
 415                     {
 416                       section->contents = ((unsigned char *)
 417                                            bfd_realloc (old_section->contents,
 418                                                         section->size));
 419                       if (section->contents == NULL)
 420                         {
 421                           bfd_set_error (bfd_error_no_memory);
 422                           return -1;
 423                         }
 424                     }
 425                 }
 426               else
 427                 {
 428                   section->contents = ((unsigned char *)
 429                                        bfd_zmalloc (section->size));
 430                   if (section->contents == NULL)
 431                     {
 432                       bfd_set_error (bfd_error_no_memory);
 433                       return -1;
 434                     }
 435                 }
 436 #if VMS_DEBUG
 437               vms_debug (4, "gsd psc %d (%s, flags %04x=%s) ",
 438                          section->index, name, old_flags, flag2str (gpsflagdesc, old_flags));
 439               vms_debug (4, "%d bytes at 0x%08lx (mem %p)\n",
 440                          section->size, section->vma, section->contents);
 441 #endif
 442
 443               gsd_size = vms_rec[8] + 9;
 444
 445               psect_idx++;
 446             }
 447           break;
 448
 449           case GSD_S_C_EPM:
 450           case GSD_S_C_EPMW:
 451 #if VMS_DEBUG
 452                 vms_debug(4, "gsd epm\n");
 453 #endif
 454           /*FALLTHRU*/
 455           case GSD_S_C_SYM:
 456           case GSD_S_C_SYMW:
 457             {
 458               int name_offset = 0, value_offset = 0;
 459
 460               /*
 461                * symbol specification (definition or reference)
 462                */
 463
 464 #if VMS_DEBUG
 465   vms_debug (4, "GSD_S_C_SYM(W)\n");
 466 #endif
 467               old_flags = bfd_getl16 (vms_rec + 2);
 468               new_flags = BSF_NO_FLAGS;
 469
 470               if (old_flags & GSY_S_M_WEAK)
 471                 new_flags |= BSF_WEAK;
 472
 473               switch (gsd_type)
 474                 {
 475                 case GSD_S_C_EPM:
 476                   name_offset = 11;
 477                   value_offset = 5;
 478                   new_flags |= BSF_FUNCTION;
 479                   break;
 480                 case GSD_S_C_EPMW:
 481                   name_offset = 12;
 482                   value_offset = 6;
 483                   new_flags |= BSF_FUNCTION;
 484                   break;
 485                 case GSD_S_C_SYM:
 486                   if (old_flags & GSY_S_M_DEF)  /* symbol definition */
 487                     name_offset = 9;
 488                   else
 489                     name_offset = 4;
 490                   value_offset = 5;
 491                   break;
 492                 case GSD_S_C_SYMW:
 493                   if (old_flags & GSY_S_M_DEF)  /* symbol definition */
 494                     name_offset = 10;
 495                   else
 496                     name_offset = 5;
 497                   value_offset = 6;
 498                   break;
 499                 }
 500
 501               /* save symbol in vms_symbol_table */
 502
 503               entry = _bfd_vms_enter_symbol (abfd,
 504                         _bfd_vms_save_counted_string (vms_rec + name_offset));
 505               if (entry == (vms_symbol_entry *)NULL)
 506                 {
 507                   bfd_set_error (bfd_error_no_memory);
 508                   return -1;
 509                 }
 510               symbol = entry->symbol;
 511
 512               if (old_flags & GSY_S_M_DEF)      /* symbol definition */
 513                 {
 514                   int psect;
 515
 516                   symbol->value = bfd_getl32 (vms_rec+value_offset);
 517                   if ((gsd_type == GSD_S_C_SYMW)
 518                       || (gsd_type == GSD_S_C_EPMW))
 519                     psect = bfd_getl16 (vms_rec + value_offset - 2);
 520                   else
 521                     psect = vms_rec[value_offset-1];
 522
 523                   symbol->section = (asection *) (size_t) psect;
 524 #if VMS_DEBUG
 525                   vms_debug(4, "gsd sym def #%d (%s, %d [%p], %04x=%s)\n", abfd->symcount,
 526                                 symbol->name, (int)symbol->section, symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
 527 #endif
 528                 }
 529               else      /* symbol reference */
 530                 {
 531                   symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
 532 #if VMS_DEBUG
 533                   vms_debug (4, "gsd sym ref #%d (%s, %s [%p], %04x=%s)\n", abfd->symcount,
 534                                 symbol->name, symbol->section->name, symbol->section, old_flags, flag2str (gsyflagdesc, old_flags));
 535 #endif
 536                 }
 537
 538               gsd_size = vms_rec[name_offset] + name_offset + 1;
 539               symbol->flags = new_flags;
 540             }
 541
 542           break;
 543
 544           case GSD_S_C_PRO:
 545           case GSD_S_C_PROW:
 546 #if VMS_DEBUG
 547                 vms_debug(4, "gsd pro\n");
 548 #endif
 549           break;
 550           case GSD_S_C_IDC:
 551 #if VMS_DEBUG
 552                 vms_debug(4, "gsd idc\n");
 553 #endif
 554           break;
 555           case GSD_S_C_ENV:
 556 #if VMS_DEBUG
 557                 vms_debug(4, "gsd env\n");
 558 #endif
 559           break;
 560           case GSD_S_C_LSY:
 561 #if VMS_DEBUG
 562                 vms_debug(4, "gsd lsy\n");
 563 #endif
 564           break;
 565           case GSD_S_C_LEPM:
 566 #if VMS_DEBUG
 567                 vms_debug(4, "gsd lepm\n");
 568 #endif
 569           break;
 570           case GSD_S_C_LPRO:
 571 #if VMS_DEBUG
 572                 vms_debug(4, "gsd lpro\n");
 573 #endif
 574           break;
 575           case GSD_S_C_SPSC:
 576 #if VMS_DEBUG
 577                 vms_debug(4, "gsd spsc\n");
 578 #endif
 579           break;
 580           case GSD_S_C_SYMV:
 581 #if VMS_DEBUG
 582                 vms_debug(4, "gsd symv\n");
 583 #endif
 584           break;
 585           case GSD_S_C_EPMV:
 586 #if VMS_DEBUG
 587                 vms_debug(4, "gsd epmv\n");
 588 #endif
 589           break;
 590           case GSD_S_C_PROV:
 591 #if VMS_DEBUG
 592                 vms_debug(4, "gsd prov\n");
 593 #endif
 594           break;
 595
 596         case EGSD_S_C_PSC + EVAX_OFFSET:
 597           {
 598             /* program section definition  */
 599
 600             name = _bfd_vms_save_counted_string (vms_rec+12);
 601             section = bfd_make_section (abfd, name);
 602             if (!section)
 603               return -1;
 604             old_flags = bfd_getl16 (vms_rec + 6);
 605             section->size = bfd_getl32 (vms_rec + 8);   /* allocation */
 606             new_flags = vms_secflag_by_name (abfd, evax_section_flags, name,
 607                                              section->size > 0);
 608             if (old_flags & EGPS_S_V_REL)
 609               new_flags |= SEC_RELOC;
 610             if (!bfd_set_section_flags (abfd, section, new_flags))
 611               return -1;
 612             section->alignment_power = vms_rec[4];
 613             align_addr = (1 << section->alignment_power);
 614             if ((base_addr % align_addr) != 0)
 615               base_addr += (align_addr - (base_addr % align_addr));
 616             section->vma = (bfd_vma)base_addr;
 617             base_addr += section->size;
 618             section->contents = ((unsigned char *)
 619                                  bfd_zmalloc (section->size));
 620             if (section->contents == NULL)
 621               return -1;
 622 #if VMS_DEBUG
 623             vms_debug(4, "egsd psc %d (%s, flags %04x=%s) ",
 624                        section->index, name, old_flags, flag2str(gpsflagdesc, old_flags));
 625             vms_debug(4, "%d bytes at 0x%08lx (mem %p)\n",
 626                        section->size, section->vma, section->contents);
 627 #endif
 628           }
 629           break;
 630
 631         case EGSD_S_C_SYM + EVAX_OFFSET:
 632           {
 633             /* symbol specification (definition or reference)  */
 634
 635             symbol = bfd_make_empty_symbol (abfd);
 636             if (symbol == 0)
 637               return -1;
 638
 639             old_flags = bfd_getl16 (vms_rec + 6);
 640             new_flags = BSF_NO_FLAGS;
 641
 642             if (old_flags & EGSY_S_V_WEAK)
 643               new_flags |= BSF_WEAK;
 644
 645             if (vms_rec[6] & EGSY_S_V_DEF)      /* symbol definition */
 646               {
 647                 symbol->name =
 648                   _bfd_vms_save_counted_string (vms_rec+32);
 649                 if (old_flags & EGSY_S_V_NORM)
 650                   {         /* proc def */
 651                     new_flags |= BSF_FUNCTION;
 652                   }
 653                 symbol->value = bfd_getl64 (vms_rec+8);
 654                 symbol->section = (asection *) ((unsigned long) bfd_getl32 (vms_rec+28));
 655 #if VMS_DEBUG
 656                 vms_debug(4, "egsd sym def #%d (%s, %d, %04x=%s)\n", abfd->symcount,
 657                            symbol->name, (int)symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
 658 #endif
 659               }
 660             else        /* symbol reference */
 661               {
 662                 symbol->name =
 663                   _bfd_vms_save_counted_string (vms_rec+8);
 664 #if VMS_DEBUG
 665                 vms_debug(4, "egsd sym ref #%d (%s, %04x=%s)\n", abfd->symcount,
 666                            symbol->name, old_flags, flag2str(gsyflagdesc, old_flags));
 667 #endif
 668                 symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
 669               }
 670
 671             symbol->flags = new_flags;
 672
 673             /* save symbol in vms_symbol_table  */
 674
 675             entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV(vms_symbol_table),
 676                                                           symbol->name,
 677                                                           TRUE, FALSE);
 678             if (entry == (vms_symbol_entry *)NULL)
 679               {
 680                 bfd_set_error (bfd_error_no_memory);
 681                 return -1;
 682               }
 683             if (entry->symbol != (asymbol *)NULL)
 684               {                                 /* FIXME ?, DEC C generates this */
 685 #if VMS_DEBUG
 686                 vms_debug(4, "EGSD_S_C_SYM: duplicate \"%s\"\n", symbol->name);
 687 #endif
 688               }
 689             else
 690               {
 691                 entry->symbol = symbol;
 692                 PRIV(gsd_sym_count)++;
 693                 abfd->symcount++;
 694               }
 695           }
 696           break;
 697
 698         case EGSD_S_C_IDC + EVAX_OFFSET:
 699           break;
 700
 701         default:
 702           (*_bfd_error_handler) (_("unknown gsd/egsd subtype %d"), gsd_type);
 703           bfd_set_error (bfd_error_bad_value);
 704           return -1;
 705
 706         } /* switch */
 707
 708       PRIV(rec_size) -= gsd_size;
 709       PRIV(vms_rec) += gsd_size;
 710
 711     } /* while (recsize > 0) */
 712
 713   if (abfd->symcount > 0)
 714     abfd->flags |= HAS_SYMS;
 715
 716   return 0;
 717 }
 718
 719 /*-----------------------------------------------------------------------------*/
 720 /* output routines */
 721
 722 /* Write section and symbol directory of bfd abfd  */
 723
 724 int
 725 _bfd_vms_write_gsd (abfd, objtype)
 726      bfd *abfd;
 727      int objtype ATTRIBUTE_UNUSED;
 728 {
 729   asection *section;
 730   asymbol *symbol;
 731   unsigned int symnum;
 732   int last_index = -1;
 733   char dummy_name[10];
 734   char *sname;
 735   flagword new_flags, old_flags;
 736
 737 #if VMS_DEBUG
 738   vms_debug (2, "vms_write_gsd (%p, %d)\n", abfd, objtype);
 739 #endif
 740
 741   /* output sections  */
 742
 743   section = abfd->sections;
 744 #if VMS_DEBUG
 745   vms_debug (3, "%d sections found\n", abfd->section_count);
 746 #endif
 747
 748   /* egsd is quadword aligned  */
 749
 750   _bfd_vms_output_alignment (abfd, 8);
 751
 752   _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 753   _bfd_vms_output_long (abfd, 0);
 754   _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 755
 756   while (section != 0)
 757     {
 758 #if VMS_DEBUG
 759   vms_debug (3, "Section #%d %s, %d bytes\n", section->index, section->name, (int)section->size);
 760 #endif
 761
 762         /* 13 bytes egsd, max 31 chars name -> should be 44 bytes */
 763       if (_bfd_vms_output_check (abfd, 64) < 0)
 764         {
 765           _bfd_vms_output_pop (abfd);
 766           _bfd_vms_output_end (abfd);
 767           _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 768           _bfd_vms_output_long (abfd, 0);
 769           _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 770         }
 771
 772         /* Create dummy sections to keep consecutive indices */
 773
 774       while (section->index - last_index > 1)
 775         {
 776 #if VMS_DEBUG
 777           vms_debug (3, "index %d, last %d\n", section->index, last_index);
 778 #endif
 779           _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
 780           _bfd_vms_output_short (abfd, 0);
 781           _bfd_vms_output_short (abfd, 0);
 782           _bfd_vms_output_long (abfd, 0);
 783           sprintf (dummy_name, ".DUMMY%02d", last_index);
 784           _bfd_vms_output_counted (abfd, dummy_name);
 785           _bfd_vms_output_flush (abfd);
 786           last_index++;
 787         }
 788
 789       /* Don't know if this is necessary for the linker but for now it keeps
 790          vms_slurp_gsd happy  */
 791
 792       sname = (char *)section->name;
 793       if (*sname == '.')
 794         {
 795           sname++;
 796           if ((*sname == 't') && (strcmp (sname, "text") == 0))
 797             sname = PRIV(is_vax)?VAX_CODE_NAME:EVAX_CODE_NAME;
 798           else if ((*sname == 'd') && (strcmp (sname, "data") == 0))
 799             sname = PRIV(is_vax)?VAX_DATA_NAME:EVAX_DATA_NAME;
 800           else if ((*sname == 'b') && (strcmp (sname, "bss") == 0))
 801             sname = EVAX_BSS_NAME;
 802           else if ((*sname == 'l') && (strcmp (sname, "link") == 0))
 803             sname = EVAX_LINK_NAME;
 804           else if ((*sname == 'r') && (strcmp (sname, "rdata") == 0))
 805             sname = EVAX_READONLY_NAME;
 806           else if ((*sname == 'l') && (strcmp (sname, "literal") == 0))
 807             sname = EVAX_LITERAL_NAME;
 808           else if ((*sname == 'c') && (strcmp (sname, "comm") == 0))
 809             sname = EVAX_COMMON_NAME;
 810           else if ((*sname == 'l') && (strcmp (sname, "lcomm") == 0))
 811             sname = EVAX_LOCAL_NAME;
 812         }
 813       else
 814         sname = _bfd_vms_length_hash_symbol (abfd, sname, EOBJ_S_C_SECSIZ);
 815
 816       _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
 817       _bfd_vms_output_short (abfd, section->alignment_power & 0xff);
 818       if (bfd_is_com_section (section))
 819         {
 820           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);
 821         }
 822       else
 823         {
 824           new_flags = vms_esecflag_by_name (evax_section_flags, sname,
 825                                             section->size > 0);
 826         }
 827       _bfd_vms_output_short (abfd, new_flags);
 828       _bfd_vms_output_long (abfd, (unsigned long) section->size);
 829       _bfd_vms_output_counted (abfd, sname);
 830       _bfd_vms_output_flush (abfd);
 831
 832       last_index = section->index;
 833       section = section->next;
 834     }
 835
 836   /* output symbols  */
 837
 838 #if VMS_DEBUG
 839   vms_debug (3, "%d symbols found\n", abfd->symcount);
 840 #endif
 841
 842   bfd_set_start_address (abfd, (bfd_vma)-1);
 843
 844   for (symnum = 0; symnum < abfd->symcount; symnum++)
 845     {
 846       char *hash;
 847
 848       symbol = abfd->outsymbols[symnum];
 849       if (*(symbol->name) == '_')
 850         {
 851           if (strcmp (symbol->name, "__main") == 0)
 852             bfd_set_start_address (abfd, (bfd_vma)symbol->value);
 853         }
 854       old_flags = symbol->flags;
 855
 856       if (old_flags & BSF_FILE)
 857         continue;
 858
 859       if (((old_flags & (BSF_GLOBAL|BSF_WEAK)) == 0)    /* not xdef */
 860           && (!bfd_is_und_section (symbol->section)))   /* and not xref */
 861         continue;                                       /* dont output */
 862
 863       /* 13 bytes egsd, max 64 chars name -> should be 77 bytes  */
 864
 865       if (_bfd_vms_output_check (abfd, 80) < 0)
 866         {
 867           _bfd_vms_output_pop (abfd);
 868           _bfd_vms_output_end (abfd);
 869           _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
 870           _bfd_vms_output_long (abfd, 0);
 871           _bfd_vms_output_push (abfd);          /* prepare output for subrecords */
 872         }
 873
 874       _bfd_vms_output_begin (abfd, EGSD_S_C_SYM, -1);
 875
 876       _bfd_vms_output_short (abfd, 0);                  /* data type, alignment */
 877
 878       new_flags = 0;
 879
 880       if (old_flags & BSF_WEAK)
 881         new_flags |= EGSY_S_V_WEAK;
 882       if (bfd_is_com_section (symbol->section))         /* .comm  */
 883         new_flags |= (EGSY_S_V_WEAK|EGSY_S_V_COMM);
 884
 885       if (old_flags & BSF_FUNCTION)
 886         {
 887           new_flags |= EGSY_S_V_NORM;
 888           new_flags |= EGSY_S_V_REL;
 889         }
 890       if (old_flags & (BSF_GLOBAL|BSF_WEAK))
 891         {
 892           new_flags |= EGSY_S_V_DEF;
 893           if (!bfd_is_abs_section (symbol->section))
 894             new_flags |= EGSY_S_V_REL;
 895         }
 896       _bfd_vms_output_short (abfd, new_flags);
 897
 898       if (old_flags & (BSF_GLOBAL | BSF_WEAK))          /* symbol definition */
 899         {
 900           uquad code_address = 0;
 901           unsigned long ca_psindx = 0;
 902           unsigned long psindx;
 903
 904           if ((old_flags & BSF_FUNCTION) && symbol->udata.p != NULL)
 905             {
 906               code_address = ((asymbol *) (symbol->udata.p))->value;
 907               ca_psindx = ((asymbol *) (symbol->udata.p))->section->index;
 908             }
 909           psindx = symbol->section->index;
 910
 911           _bfd_vms_output_quad (abfd, symbol->value);
 912           _bfd_vms_output_quad (abfd, code_address);
 913           _bfd_vms_output_long (abfd, ca_psindx);
 914           _bfd_vms_output_long (abfd, psindx);
 915         }
 916       hash = _bfd_vms_length_hash_symbol (abfd, symbol->name, EOBJ_S_C_SYMSIZ);
 917       _bfd_vms_output_counted (abfd, hash);
 918
 919       _bfd_vms_output_flush (abfd);
 920
 921     }
 922
 923   _bfd_vms_output_alignment (abfd, 8);
 924   _bfd_vms_output_pop (abfd);
 925   _bfd_vms_output_end (abfd);
 926
 927   return 0;
 928 }