bfd/vms-hdr.c

   1 /* vms-hdr.c -- BFD back-end for VMS/VAX (openVMS/VAX) and
   2    EVAX (openVMS/Alpha) files.
   3    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006,
   4    2007 Free Software Foundation, Inc.
   5
   6    HDR record handling functions
   7    EMH record handling functions
   8    and
   9    EOM record handling functions
  10    EEOM record handling functions
  11
  12    Written by Klaus K"ampf (kkaempf@rmi.de)
  13
  14    This program is free software; you can redistribute it and/or modify
  15    it under the terms of the GNU General Public License as published by
  16    the Free Software Foundation; either version 2 of the License, or
  17    (at your option) any later version.
  18
  19    This program is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23
  24    You should have received a copy of the GNU General Public License
  25    along with this program; if not, write to the Free Software
  26    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  27
  28 #include "sysdep.h"
  29 #include "bfd.h"
  30 #include "bfdver.h"
  31 #include "bfdlink.h"
  32 #include "safe-ctype.h"
  33 #include "libbfd.h"
  34
  35 #include "vms.h"
  36
  37 #ifdef HAVE_ALLOCA_H
  38 #include <alloca.h>
  39 #endif
  40
  41 /* Read & process emh record
  42    return 0 on success, -1 on error.  */
  43
  44 int
  45 _bfd_vms_slurp_hdr (bfd *abfd, int objtype)
  46 {
  47   unsigned char *ptr;
  48   unsigned char *vms_rec;
  49   int subtype;
  50
  51   vms_rec = PRIV(vms_rec);
  52
  53 #if VMS_DEBUG
  54   vms_debug(2, "HDR/EMH\n");
  55 #endif
  56
  57   switch (objtype)
  58     {
  59     case OBJ_S_C_HDR:
  60       subtype = vms_rec[1];
  61       break;
  62     case EOBJ_S_C_EMH:
  63       subtype = bfd_getl16 (vms_rec + 4) + EVAX_OFFSET;
  64       break;
  65     default:
  66       subtype = -1;
  67     }
  68
  69 #if VMS_DEBUG
  70   vms_debug(3, "subtype %d\n", subtype);
  71 #endif
  72
  73   switch (subtype)
  74     {
  75     case MHD_S_C_MHD:
  76       /* Module header.  */
  77       PRIV (hdr_data).hdr_b_strlvl = vms_rec[2];
  78       PRIV (hdr_data).hdr_l_recsiz = bfd_getl16 (vms_rec + 3);
  79       PRIV (hdr_data).hdr_t_name = _bfd_vms_save_counted_string (vms_rec + 5);
  80       ptr = vms_rec + 5 + vms_rec[5] + 1;
  81       PRIV (hdr_data).hdr_t_version = _bfd_vms_save_counted_string (ptr);
  82       ptr += *ptr + 1;
  83       PRIV (hdr_data).hdr_t_date = _bfd_vms_save_sized_string (ptr, 17);
  84       break;
  85
  86     case MHD_S_C_LNM:
  87       PRIV (hdr_data).hdr_c_lnm = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 2));
  88       break;
  89
  90     case MHD_S_C_SRC:
  91       PRIV (hdr_data).hdr_c_src = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 2));
  92       break;
  93
  94     case MHD_S_C_TTL:
  95       PRIV (hdr_data).hdr_c_ttl = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 2));
  96       break;
  97
  98     case EMH_S_C_MHD + EVAX_OFFSET:
  99       /* Module header.  */
 100       PRIV (hdr_data).hdr_b_strlvl = vms_rec[6];
 101       PRIV (hdr_data).hdr_l_arch1  = bfd_getl32 (vms_rec + 8);
 102       PRIV (hdr_data).hdr_l_arch2  = bfd_getl32 (vms_rec + 12);
 103       PRIV (hdr_data).hdr_l_recsiz = bfd_getl32 (vms_rec + 16);
 104       PRIV (hdr_data).hdr_t_name   = _bfd_vms_save_counted_string (vms_rec + 20);
 105       ptr = vms_rec + 20 + vms_rec[20] + 1;
 106       PRIV (hdr_data).hdr_t_version =_bfd_vms_save_counted_string (ptr);
 107       ptr += *ptr + 1;
 108       PRIV (hdr_data).hdr_t_date = _bfd_vms_save_sized_string (ptr, 17);
 109       break;
 110
 111     case EMH_S_C_LNM + EVAX_OFFSET:
 112       PRIV (hdr_data).hdr_c_lnm = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 6));
 113       break;
 114
 115     case EMH_S_C_SRC + EVAX_OFFSET:
 116       PRIV (hdr_data).hdr_c_src = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 6));
 117       break;
 118
 119     case EMH_S_C_TTL + EVAX_OFFSET:
 120       PRIV (hdr_data).hdr_c_ttl = _bfd_vms_save_sized_string (vms_rec, PRIV (rec_length - 6));
 121       break;
 122
 123     case MHD_S_C_CPR:
 124     case MHD_S_C_MTC:
 125     case MHD_S_C_GTX:
 126     case EMH_S_C_CPR + EVAX_OFFSET:
 127     case EMH_S_C_MTC + EVAX_OFFSET:
 128     case EMH_S_C_GTX + EVAX_OFFSET:
 129       break;
 130
 131     default:
 132       bfd_set_error (bfd_error_wrong_format);
 133       return -1;
 134     }
 135
 136   return 0;
 137 }
 138
 139 /* Output routines.  */
 140
 141 /* Manufacture a VMS like time on a unix based system.
 142    stolen from obj-vms.c.  */
 143
 144 static unsigned char *
 145 get_vms_time_string (void)
 146 {
 147   static unsigned char tbuf[18];
 148 #ifndef VMS
 149 #include <time.h>
 150
 151   char *pnt;
 152   time_t timeb;
 153
 154   time (& timeb);
 155   pnt = ctime (&timeb);
 156   pnt[3] = 0;
 157   pnt[7] = 0;
 158   pnt[10] = 0;
 159   pnt[16] = 0;
 160   pnt[24] = 0;
 161   sprintf ((char *) tbuf, "%2s-%3s-%s %s",
 162            pnt + 8, pnt + 4, pnt + 20, pnt + 11);
 163 #else
 164 #include <starlet.h>
 165   struct
 166   {
 167     int Size;
 168     unsigned char *Ptr;
 169   } Descriptor;
 170   Descriptor.Size = 17;
 171   Descriptor.Ptr = tbuf;
 172   SYS$ASCTIM (0, &Descriptor, 0, 0);
 173 #endif /* not VMS */
 174
 175 #if VMS_DEBUG
 176   vms_debug (6, "vmstimestring:'%s'\n", tbuf);
 177 #endif
 178
 179   return tbuf;
 180 }
 181
 182 /* Write object header for bfd abfd.  */
 183
 184 int
 185 _bfd_vms_write_hdr (bfd *abfd, int objtype)
 186 {
 187   asymbol *symbol;
 188   unsigned int symnum;
 189   int had_case = 0;
 190   int had_file = 0;
 191
 192 #if VMS_DEBUG
 193   vms_debug (2, "vms_write_hdr (%p)\n", abfd);
 194 #endif
 195
 196   _bfd_vms_output_alignment (abfd, 2);
 197
 198   /* MHD.  */
 199   if (objtype != OBJ_S_C_HDR)
 200     {
 201       _bfd_vms_output_begin (abfd, EOBJ_S_C_EMH, EMH_S_C_MHD);
 202       _bfd_vms_output_short (abfd, EOBJ_S_C_STRLVL);
 203       _bfd_vms_output_long (abfd, 0);
 204       _bfd_vms_output_long (abfd, 0);
 205       _bfd_vms_output_long (abfd, MAX_OUTREC_SIZE);
 206     }
 207
 208   if (bfd_get_filename (abfd) != 0)
 209     {
 210       /* Strip path and suffix information.  */
 211       char *fname, *fout, *fptr;
 212
 213       fptr = bfd_get_filename (abfd);
 214       fname = alloca (strlen (fptr) + 1);
 215       strcpy (fname, fptr);
 216       fout = strrchr (fname, ']');
 217       if (fout == 0)
 218         fout = strchr (fname, ':');
 219       if (fout != 0)
 220         fout++;
 221       else
 222         fout = fname;
 223
 224       /* Strip .obj suffix.  */
 225       fptr = strrchr (fname, '.');
 226       if ((fptr != 0)
 227           && (strcasecmp (fptr, ".OBJ") == 0))
 228         *fptr = 0;
 229
 230       fptr = fout;
 231       while (*fptr != 0)
 232         {
 233           *fptr = TOUPPER (*fptr);
 234           fptr++;
 235           if ((*fptr == ';')
 236              || ((fptr - fout) > 31))
 237             *fptr = 0;
 238         }
 239       _bfd_vms_output_counted (abfd, fout);
 240     }
 241   else
 242     _bfd_vms_output_counted (abfd, "NONAME");
 243
 244   _bfd_vms_output_counted (abfd, BFD_VERSION_STRING);
 245   _bfd_vms_output_dump (abfd, get_vms_time_string (), 17);
 246   _bfd_vms_output_fill (abfd, 0, 17);
 247   _bfd_vms_output_flush (abfd);
 248
 249   /* LMN.  */
 250   _bfd_vms_output_begin (abfd, EOBJ_S_C_EMH, EMH_S_C_LNM);
 251   _bfd_vms_output_dump (abfd, (unsigned char *) STRING_COMMA_LEN ("GAS proGIS"));
 252   _bfd_vms_output_flush (abfd);
 253
 254   /* SRC.  */
 255   _bfd_vms_output_begin (abfd, EOBJ_S_C_EMH, EMH_S_C_SRC);
 256
 257   for (symnum = 0; symnum < abfd->symcount; symnum++)
 258     {
 259       symbol = abfd->outsymbols[symnum];
 260
 261       if (symbol->flags & BSF_FILE)
 262         {
 263           if (CONST_STRNEQ ((char *)symbol->name, "<CASE:"))
 264             {
 265               PRIV (flag_hash_long_names) = symbol->name[6] - '0';
 266               PRIV (flag_show_after_trunc) = symbol->name[7] - '0';
 267
 268               if (had_file)
 269                 break;
 270               had_case = 1;
 271               continue;
 272             }
 273
 274           _bfd_vms_output_dump (abfd, (unsigned char *) symbol->name,
 275                                 (int) strlen (symbol->name));
 276           if (had_case)
 277             break;
 278           had_file = 1;
 279         }
 280     }
 281
 282   if (symnum == abfd->symcount)
 283     _bfd_vms_output_dump (abfd, (unsigned char *) STRING_COMMA_LEN ("noname"));
 284
 285   _bfd_vms_output_flush (abfd);
 286
 287   /* TTL.  */
 288   _bfd_vms_output_begin (abfd, EOBJ_S_C_EMH, EMH_S_C_TTL);
 289   _bfd_vms_output_dump (abfd, (unsigned char *) STRING_COMMA_LEN ("TTL"));
 290   _bfd_vms_output_flush (abfd);
 291
 292   /* CPR.  */
 293   _bfd_vms_output_begin (abfd, EOBJ_S_C_EMH, EMH_S_C_CPR);
 294   _bfd_vms_output_dump (abfd,
 295                          (unsigned char *)"GNU BFD ported by Klaus Kämpf 1994-1996",
 296                          39);
 297   _bfd_vms_output_flush (abfd);
 298
 299   return 0;
 300 }
 301
 302 /* Process EOM/EEOM record
 303    return 0 on success, -1 on error.  */
 304
 305 int
 306 _bfd_vms_slurp_eom (bfd *abfd, int objtype)
 307 {
 308   unsigned char *vms_rec;
 309
 310 #if VMS_DEBUG
 311   vms_debug(2, "EOM/EEOM\n");
 312 #endif
 313
 314   vms_rec = PRIV (vms_rec);
 315
 316   if ((objtype == OBJ_S_C_EOM)
 317      || (objtype == OBJ_S_C_EOMW))
 318     {
 319     }
 320   else
 321     {
 322       PRIV (eom_data).eom_l_total_lps = bfd_getl32 (vms_rec + 4);
 323       PRIV (eom_data).eom_b_comcod = *(vms_rec + 8);
 324
 325       if (PRIV (eom_data).eom_b_comcod > 1)
 326         {
 327           (*_bfd_error_handler) (_("Object module NOT error-free !\n"));
 328           bfd_set_error (bfd_error_bad_value);
 329           return -1;
 330         }
 331       PRIV (eom_data).eom_has_transfer = FALSE;
 332       if (PRIV (rec_size) > 10)
 333         {
 334            PRIV (eom_data).eom_has_transfer = TRUE;
 335            PRIV (eom_data).eom_b_tfrflg = *(vms_rec + 9);
 336            PRIV (eom_data).eom_l_psindx = bfd_getl32 (vms_rec + 12);
 337            PRIV (eom_data).eom_l_tfradr = bfd_getl32 (vms_rec + 16);
 338
 339            abfd->start_address = PRIV (eom_data).eom_l_tfradr;
 340         }
 341     }
 342   return 0;
 343 }
 344
 345 /* Write eom record for bfd abfd.  */
 346
 347 int
 348 _bfd_vms_write_eom (bfd *abfd, int objtype)
 349 {
 350 #if VMS_DEBUG
 351   vms_debug (2, "vms_write_eom (%p, %d)\n", abfd, objtype);
 352 #endif
 353
 354   _bfd_vms_output_begin (abfd, objtype, -1);
 355   _bfd_vms_output_long (abfd, (unsigned long) (PRIV (vms_linkage_index) >> 1));
 356   _bfd_vms_output_byte (abfd, 0);       /* Completion code.  */
 357   _bfd_vms_output_byte (abfd, 0);       /* Fill byte.  */
 358
 359   if (bfd_get_start_address (abfd) != (bfd_vma)-1)
 360     {
 361       asection *section;
 362
 363       section = bfd_get_section_by_name (abfd, ".link");
 364       if (section == 0)
 365         {
 366           bfd_set_error (bfd_error_nonrepresentable_section);
 367           return -1;
 368         }
 369       _bfd_vms_output_short (abfd, 0);
 370       _bfd_vms_output_long (abfd, (unsigned long) (section->index));
 371       _bfd_vms_output_long (abfd,
 372                              (unsigned long) bfd_get_start_address (abfd));
 373       _bfd_vms_output_long (abfd, 0);
 374     }
 375
 376   _bfd_vms_output_end (abfd);
 377   return 0;
 378 }