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      1 /* BFD back-end for VERSAdos-E objects.
      2    Copyright (C) 1995-2016 Free Software Foundation, Inc.
      3    Written by Steve Chamberlain of Cygnus Support <sac (at) cygnus.com>.
      4 
      5    Versados is a Motorola trademark.
      6 
      7    This file is part of BFD, the Binary File Descriptor library.
      8 
      9    This program is free software; you can redistribute it and/or modify
     10    it under the terms of the GNU General Public License as published by
     11    the Free Software Foundation; either version 3 of the License, or
     12    (at your option) any later version.
     13 
     14    This program is distributed in the hope that it will be useful,
     15    but WITHOUT ANY WARRANTY; without even the implied warranty of
     16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17    GNU General Public License for more details.
     18 
     19    You should have received a copy of the GNU General Public License
     20    along with this program; if not, write to the Free Software
     21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     22    MA 02110-1301, USA.  */
     23 
     24 /*
     25    SUBSECTION
     26    VERSAdos-E relocatable object file format
     27 
     28    DESCRIPTION
     29 
     30    This module supports reading of VERSAdos relocatable
     31    object files.
     32 
     33    A VERSAdos file looks like contains
     34 
     35    o Identification Record
     36    o External Symbol Definition Record
     37    o Object Text Record
     38    o End Record.  */
     39 
     40 #include "sysdep.h"
     41 #include "bfd.h"
     42 #include "libbfd.h"
     43 #include "libiberty.h"
     44 
     45 
     46 #define VHEADER '1'
     47 #define VESTDEF '2'
     48 #define VOTR '3'
     49 #define VEND '4'
     50 
     51 #define ES_BASE 17		/* First symbol has esdid 17.  */
     52 
     53 /* Per file target dependent information.  */
     54 
     55 /* One for each section.  */
     56 struct esdid
     57 {
     58   asection *section;		/* Ptr to bfd version.  */
     59   unsigned char *contents;	/* Used to build image.  */
     60   bfd_size_type content_size;	/* The size of the contents buffer.  */
     61   int pc;
     62   int relocs;			/* Reloc count, valid end of pass 1.  */
     63   int donerel;			/* Have relocs been translated.  */
     64 };
     65 
     66 typedef struct versados_data_struct
     67 {
     68   int es_done;			/* Count of symbol index, starts at ES_BASE.  */
     69   asymbol *symbols;		/* Pointer to local symbols.  */
     70   char *strings;		/* Strings of all the above.  */
     71   int stringlen;		/* Len of string table (valid end of pass1).  */
     72   int nsecsyms;			/* Number of sections.  */
     73 
     74   int ndefs;			/* Number of exported symbols (they dont get esdids).  */
     75   int nrefs;			/* Number of imported symbols  (valid end of pass1).  */
     76 
     77   int ref_idx;			/* Current processed value of the above.  */
     78   int def_idx;
     79 
     80   int pass_2_done;
     81 
     82   struct esdid e[16];		/* Per section info.  */
     83   int alert;			/* To see if we're trampling.  */
     84   asymbol *rest[256 - 16];	/* Per symbol info.  */
     85 }
     86 tdata_type;
     87 
     88 #define VDATA(abfd)       (abfd->tdata.versados_data)
     89 #define EDATA(abfd, n)    (abfd->tdata.versados_data->e[(n) < 16 ? (n) : 0])
     90 #define RDATA(abfd, n)    (abfd->tdata.versados_data->rest[(n) < 240 ? (n) : 0])
     91 
     92 struct ext_otr
     93 {
     94   unsigned char size;
     95   char type;
     96   unsigned char map[4];
     97   unsigned char esdid;
     98   unsigned char data[200];
     99 };
    100 
    101 struct ext_vheader
    102 {
    103   unsigned char size;
    104   char type;			/* Record type.  */
    105   char name[10];		/* Module name.  */
    106   char rev;			/* Module rev number.  */
    107   char lang;
    108   char vol[4];
    109   char user[2];
    110   char cat[8];
    111   char fname[8];
    112   char ext[2];
    113   char time[3];
    114   char date[3];
    115   char rest[211];
    116 };
    117 
    118 struct ext_esd
    119 {
    120   unsigned char size;
    121   char type;
    122   unsigned char esd_entries[1];
    123 };
    124 
    125 #define ESD_ABS 	  0
    126 #define ESD_COMMON 	  1
    127 #define ESD_STD_REL_SEC   2
    128 #define ESD_SHRT_REL_SEC  3
    129 #define ESD_XDEF_IN_SEC   4
    130 #define ESD_XDEF_IN_ABS   5
    131 #define ESD_XREF_SEC	  6
    132 #define ESD_XREF_SYM      7
    133 
    134 union ext_any
    135 {
    136   unsigned char size;
    137   struct ext_vheader header;
    138   struct ext_esd esd;
    139   struct ext_otr otr;
    140 };
    141 
    142 /* Initialize by filling in the hex conversion array.  */
    143 
    144 /* Set up the tdata information.  */
    145 
    146 static bfd_boolean
    147 versados_mkobject (bfd *abfd)
    148 {
    149   if (abfd->tdata.versados_data == NULL)
    150     {
    151       bfd_size_type amt = sizeof (tdata_type);
    152       tdata_type *tdata = bfd_alloc (abfd, amt);
    153 
    154       if (tdata == NULL)
    155 	return FALSE;
    156       abfd->tdata.versados_data = tdata;
    157       tdata->symbols = NULL;
    158       VDATA (abfd)->alert = 0x12345678;
    159     }
    160 
    161   bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
    162   return TRUE;
    163 }
    164 
    165 /* Report a problem in an S record file.  FIXME: This probably should
    166    not call fprintf, but we really do need some mechanism for printing
    167    error messages.  */
    168 
    169 static asymbol *
    170 versados_new_symbol (bfd *abfd,
    171 		     int snum,
    172 		     const char *name,
    173 		     bfd_vma val,
    174 		     asection *sec)
    175 {
    176   asymbol *n = VDATA (abfd)->symbols + snum;
    177   n->name = name;
    178   n->value = val;
    179   n->section = sec;
    180   n->the_bfd = abfd;
    181   n->flags = 0;
    182   return n;
    183 }
    184 
    185 static bfd_boolean
    186 get_record (bfd *abfd, union ext_any *ptr)
    187 {
    188   if (bfd_bread (&ptr->size, (bfd_size_type) 1, abfd) != 1
    189       || (bfd_bread ((char *) ptr + 1, (bfd_size_type) ptr->size, abfd)
    190 	  != ptr->size))
    191     return FALSE;
    192 
    193   {
    194     bfd_size_type amt = ptr->size + 1;
    195 
    196     if (amt < sizeof (* ptr))
    197       memset ((char *) ptr + amt, 0, sizeof (* ptr) - amt);
    198   }
    199 
    200   return TRUE;
    201 }
    202 
    203 static int
    204 get_4 (unsigned char **pp)
    205 {
    206   unsigned char *p = *pp;
    207 
    208   *pp += 4;
    209   return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
    210 }
    211 
    212 static void
    213 get_10 (unsigned char **pp, char *name)
    214 {
    215   char *p = (char *) *pp;
    216   int len = 10;
    217 
    218   *pp += len;
    219   while (*p != ' ' && len)
    220     {
    221       *name++ = *p++;
    222       len--;
    223     }
    224   *name = 0;
    225 }
    226 
    227 static char *
    228 new_symbol_string (bfd *abfd, const char *name)
    229 {
    230   char *n = VDATA (abfd)->strings;
    231 
    232   strcpy (VDATA (abfd)->strings, name);
    233   VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
    234   return n;
    235 }
    236 
    237 static void
    238 process_esd (bfd *abfd, struct ext_esd *esd, int pass)
    239 {
    240   /* Read through the ext def for the est entries.  */
    241   int togo = esd->size - 2;
    242   bfd_vma size;
    243   bfd_vma start;
    244   asection *sec;
    245   char name[11];
    246   unsigned char *ptr = esd->esd_entries;
    247   unsigned char *end = ptr + togo;
    248 
    249   while (ptr < end)
    250     {
    251       int scn = *ptr & 0xf;
    252       int typ = (*ptr >> 4) & 0xf;
    253 
    254       /* Declare this section.  */
    255       sprintf (name, "%d", scn);
    256       sec = bfd_make_section_old_way (abfd, strdup (name));
    257       sec->target_index = scn;
    258       EDATA (abfd, scn).section = sec;
    259       ptr++;
    260 
    261       switch (typ)
    262 	{
    263 	default:
    264 	  abort ();
    265 	case ESD_XREF_SEC:
    266 	case ESD_XREF_SYM:
    267 	  {
    268 	    int snum = VDATA (abfd)->ref_idx++;
    269 	    get_10 (&ptr, name);
    270 	    if (pass == 1)
    271 	      VDATA (abfd)->stringlen += strlen (name) + 1;
    272 	    else
    273 	      {
    274 		int esidx;
    275 		asymbol *s;
    276 		char *n = new_symbol_string (abfd, name);
    277 
    278 		s = versados_new_symbol (abfd, snum, n, (bfd_vma) 0,
    279 					 bfd_und_section_ptr);
    280 		esidx = VDATA (abfd)->es_done++;
    281 		RDATA (abfd, esidx - ES_BASE) = s;
    282 	      }
    283 	  }
    284 	  break;
    285 
    286 	case ESD_ABS:
    287 	  size = get_4 (&ptr);
    288 	  (void) size;
    289 	  start = get_4 (&ptr);
    290 	  (void) start;
    291 	  break;
    292 	case ESD_STD_REL_SEC:
    293 	case ESD_SHRT_REL_SEC:
    294 	  sec->size = get_4 (&ptr);
    295 	  sec->flags |= SEC_ALLOC;
    296 	  break;
    297 	case ESD_XDEF_IN_ABS:
    298 	  sec = bfd_abs_section_ptr;
    299 	case ESD_XDEF_IN_SEC:
    300 	  {
    301 	    int snum = VDATA (abfd)->def_idx++;
    302 	    bfd_vma val;
    303 
    304 	    get_10 (&ptr, name);
    305 	    val = get_4 (&ptr);
    306 	    if (pass == 1)
    307 	      /* Just remember the symbol.  */
    308 	      VDATA (abfd)->stringlen += strlen (name) + 1;
    309 	    else
    310 	      {
    311 		asymbol *s;
    312 		char *n = new_symbol_string (abfd, name);
    313 
    314 		s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n,
    315 					 val, sec);
    316 		s->flags |= BSF_GLOBAL;
    317 	      }
    318 	  }
    319 	  break;
    320 	}
    321     }
    322 }
    323 
    324 #define R_RELWORD     1
    325 #define R_RELLONG     2
    326 #define R_RELWORD_NEG 3
    327 #define R_RELLONG_NEG 4
    328 
    329 reloc_howto_type versados_howto_table[] =
    330 {
    331   HOWTO (R_RELWORD, 0, 1, 16, FALSE,
    332 	 0, complain_overflow_dont, 0,
    333 	 "+v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    334   HOWTO (R_RELLONG, 0, 2, 32, FALSE,
    335 	 0, complain_overflow_dont, 0,
    336 	 "+v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
    337 
    338   HOWTO (R_RELWORD_NEG, 0, -1, 16, FALSE,
    339 	 0, complain_overflow_dont, 0,
    340 	 "-v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    341   HOWTO (R_RELLONG_NEG, 0, -2, 32, FALSE,
    342 	 0, complain_overflow_dont, 0,
    343 	 "-v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
    344 };
    345 
    346 static int
    347 get_offset (int len, unsigned char *ptr)
    348 {
    349   int val = 0;
    350 
    351   if (len)
    352     {
    353       int i;
    354 
    355       val = *ptr++;
    356       if (val & 0x80)
    357 	val |= ~0xff;
    358       for (i = 1; i < len; i++)
    359 	val = (val << 8) | *ptr++;
    360     }
    361 
    362   return val;
    363 }
    364 
    365 static void
    366 process_otr (bfd *abfd, struct ext_otr *otr, int pass)
    367 {
    368   unsigned long shift;
    369   unsigned char *srcp = otr->data;
    370   unsigned char *endp = (unsigned char *) otr + otr->size;
    371   unsigned int bits = (otr->map[0] << 24)
    372   | (otr->map[1] << 16)
    373   | (otr->map[2] << 8)
    374   | (otr->map[3] << 0);
    375 
    376   struct esdid *esdid;
    377   unsigned char *contents;
    378   bfd_boolean need_contents = FALSE;
    379   unsigned int dst_idx;
    380 
    381   /* PR 17512: file: ac7da425.  */
    382   if (otr->esdid == 0)
    383     return;
    384 
    385   esdid = &EDATA (abfd, otr->esdid - 1);
    386   contents = esdid->contents;
    387   dst_idx = esdid->pc;
    388 
    389   for (shift = ((unsigned long) 1 << 31); shift && srcp < endp; shift >>= 1)
    390     {
    391       if (bits & shift)
    392 	{
    393 	  int flag = *srcp++;
    394 	  int esdids = (flag >> 5) & 0x7;
    395 	  int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
    396 	  int offsetlen = flag & 0x7;
    397 	  int j;
    398 
    399 	  if (esdids == 0)
    400 	    {
    401 	      /* A zero esdid means the new pc is the offset given.  */
    402 	      dst_idx += get_offset (offsetlen, srcp);
    403 	      srcp += offsetlen;
    404 	    }
    405 	  else
    406 	    {
    407 	      int val = get_offset (offsetlen, srcp + esdids);
    408 
    409 	      if (pass == 1)
    410 		need_contents = TRUE;
    411 	      else if (contents && dst_idx < esdid->content_size - sizeinwords * 2)
    412 		for (j = 0; j < sizeinwords * 2; j++)
    413 		  {
    414 		    contents[dst_idx + (sizeinwords * 2) - j - 1] = val;
    415 		    val >>= 8;
    416 		  }
    417 
    418 	      for (j = 0; j < esdids; j++)
    419 		{
    420 		  int id = *srcp++;
    421 
    422 		  if (id)
    423 		    {
    424 		      int rn = EDATA (abfd, otr->esdid - 1).relocs++;
    425 
    426 		      if (pass == 1)
    427 			{
    428 			  /* This is the first pass over the data,
    429 			     just remember that we need a reloc.  */
    430 			}
    431 		      else
    432 			{
    433 			  arelent *n;
    434 
    435 			  /* PR 17512: file: 54f733e0.  */
    436 			  if (EDATA (abfd, otr->esdid - 1).section == NULL)
    437 			    continue;
    438 			  n = EDATA (abfd, otr->esdid - 1).section->relocation + rn;
    439 			  n->address = dst_idx;
    440 			  n->sym_ptr_ptr = (asymbol **) (size_t) id;
    441 			  n->addend = 0;
    442 			  n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1);
    443 			}
    444 		    }
    445 		}
    446 	      srcp += offsetlen;
    447 	      dst_idx += sizeinwords * 2;
    448 	    }
    449 	}
    450       else
    451 	{
    452 	  need_contents = TRUE;
    453 
    454 	  if (esdid->section && contents && dst_idx < esdid->content_size - 1)
    455 	    if (pass == 2)
    456 	      {
    457 		/* Absolute code, comes in 16 bit lumps.  */
    458 		contents[dst_idx] = srcp[0];
    459 		contents[dst_idx + 1] = srcp[1];
    460 	      }
    461 
    462 	  dst_idx += 2;
    463 	  srcp += 2;
    464 	}
    465     }
    466 
    467   EDATA (abfd, otr->esdid - 1).pc = dst_idx;
    468 
    469   if (!contents && need_contents)
    470     {
    471       if (esdid->section)
    472 	{
    473 	  bfd_size_type size;
    474 
    475 	  size = esdid->section->size;
    476 	  esdid->contents = bfd_alloc (abfd, size);
    477 	  esdid->content_size = size;
    478 	}
    479       else
    480 	esdid->contents = NULL;
    481     }
    482 }
    483 
    484 static bfd_boolean
    485 versados_scan (bfd *abfd)
    486 {
    487   bfd_boolean loop = TRUE;
    488   int i;
    489   int j;
    490   int nsecs = 0;
    491   bfd_size_type amt;
    492 
    493   VDATA (abfd)->stringlen = 0;
    494   VDATA (abfd)->nrefs = 0;
    495   VDATA (abfd)->ndefs = 0;
    496   VDATA (abfd)->ref_idx = 0;
    497   VDATA (abfd)->def_idx = 0;
    498   VDATA (abfd)->pass_2_done = 0;
    499 
    500   while (loop)
    501     {
    502       union ext_any any;
    503 
    504       if (!get_record (abfd, &any))
    505 	return FALSE;
    506       switch (any.header.type)
    507 	{
    508 	case VHEADER:
    509 	  break;
    510 	case VEND:
    511 	  loop = FALSE;
    512 	  break;
    513 	case VESTDEF:
    514 	  process_esd (abfd, &any.esd, 1);
    515 	  break;
    516 	case VOTR:
    517 	  process_otr (abfd, &any.otr, 1);
    518 	  break;
    519 	}
    520     }
    521 
    522   /* Now allocate space for the relocs and sections.  */
    523   VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx;
    524   VDATA (abfd)->ndefs = VDATA (abfd)->def_idx;
    525   VDATA (abfd)->ref_idx = 0;
    526   VDATA (abfd)->def_idx = 0;
    527 
    528   abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs;
    529 
    530   for (i = 0; i < 16; i++)
    531     {
    532       struct esdid *esdid = &EDATA (abfd, i);
    533 
    534       if (esdid->section)
    535 	{
    536 	  amt = (bfd_size_type) esdid->relocs * sizeof (arelent);
    537 	  esdid->section->relocation = bfd_alloc (abfd, amt);
    538 	  esdid->pc = 0;
    539 
    540 	  if (esdid->contents)
    541 	    esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD;
    542 
    543 	  esdid->section->reloc_count = esdid->relocs;
    544 	  if (esdid->relocs)
    545 	    esdid->section->flags |= SEC_RELOC;
    546 
    547 	  esdid->relocs = 0;
    548 
    549 	  /* Add an entry into the symbol table for it.  */
    550 	  nsecs++;
    551 	  VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
    552 	}
    553     }
    554 
    555   abfd->symcount += nsecs;
    556 
    557   amt = abfd->symcount;
    558   amt *= sizeof (asymbol);
    559   VDATA (abfd)->symbols = bfd_alloc (abfd, amt);
    560 
    561   amt = VDATA (abfd)->stringlen;
    562   VDATA (abfd)->strings = bfd_alloc (abfd, amt);
    563 
    564   if ((VDATA (abfd)->symbols == NULL && abfd->symcount > 0)
    565       || (VDATA (abfd)->strings == NULL && VDATA (abfd)->stringlen > 0))
    566     return FALSE;
    567 
    568   /* Actually fill in the section symbols,
    569      we stick them at the end of the table.  */
    570   for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++)
    571     {
    572       struct esdid *esdid = &EDATA (abfd, i);
    573       asection *sec = esdid->section;
    574 
    575       if (sec)
    576 	{
    577 	  asymbol *s = VDATA (abfd)->symbols + j;
    578 	  s->name = new_symbol_string (abfd, sec->name);
    579 	  s->section = sec;
    580 	  s->flags = BSF_LOCAL;
    581 	  s->value = 0;
    582 	  s->the_bfd = abfd;
    583 	  j++;
    584 	}
    585     }
    586 
    587   if (abfd->symcount)
    588     abfd->flags |= HAS_SYMS;
    589 
    590   /* Set this to nsecs - since we've already planted the section
    591      symbols.  */
    592   VDATA (abfd)->nsecsyms = nsecs;
    593 
    594   VDATA (abfd)->ref_idx = 0;
    595 
    596   return TRUE;
    597 }
    598 
    599 /* Check whether an existing file is a versados  file.  */
    600 
    601 static const bfd_target *
    602 versados_object_p (bfd *abfd)
    603 {
    604   struct ext_vheader ext;
    605   unsigned char len;
    606   tdata_type *tdata_save;
    607 
    608   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
    609     return NULL;
    610 
    611   if (bfd_bread (&len, (bfd_size_type) 1, abfd) != 1)
    612     {
    613       if (bfd_get_error () != bfd_error_system_call)
    614 	bfd_set_error (bfd_error_wrong_format);
    615       return NULL;
    616     }
    617 
    618   /* PR 17512: file: 726-2128-0.004.  */
    619   if (len < 13)
    620     {
    621       bfd_set_error (bfd_error_wrong_format);
    622       return NULL;
    623     }
    624 
    625   if (bfd_bread (&ext.type, (bfd_size_type) len, abfd) != len)
    626     {
    627       if (bfd_get_error () != bfd_error_system_call)
    628 	bfd_set_error (bfd_error_wrong_format);
    629       return NULL;
    630     }
    631 
    632   /* We guess that the language field will never be larger than 10.
    633      In sample files, it is always either 0 or 1.  Checking for this
    634      prevents confusion with Intel Hex files.  */
    635   if (ext.type != VHEADER
    636       || ext.lang > 10)
    637     {
    638       bfd_set_error (bfd_error_wrong_format);
    639       return NULL;
    640     }
    641 
    642   /* OK, looks like a record, build the tdata and read in.  */
    643   tdata_save = abfd->tdata.versados_data;
    644   if (!versados_mkobject (abfd) || !versados_scan (abfd))
    645     {
    646       abfd->tdata.versados_data = tdata_save;
    647       return NULL;
    648     }
    649 
    650   return abfd->xvec;
    651 }
    652 
    653 static bfd_boolean
    654 versados_pass_2 (bfd *abfd)
    655 {
    656   union ext_any any;
    657 
    658   if (VDATA (abfd)->pass_2_done)
    659     return 1;
    660 
    661   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
    662     return 0;
    663 
    664   VDATA (abfd)->es_done = ES_BASE;
    665 
    666   /* Read records till we get to where we want to be.  */
    667   while (1)
    668     {
    669       get_record (abfd, &any);
    670       switch (any.header.type)
    671 	{
    672 	case VEND:
    673 	  VDATA (abfd)->pass_2_done = 1;
    674 	  return 1;
    675 	case VESTDEF:
    676 	  process_esd (abfd, &any.esd, 2);
    677 	  break;
    678 	case VOTR:
    679 	  process_otr (abfd, &any.otr, 2);
    680 	  break;
    681 	}
    682     }
    683 }
    684 
    685 static bfd_boolean
    686 versados_get_section_contents (bfd *abfd,
    687 			       asection *section,
    688 			       void * location,
    689 			       file_ptr offset,
    690 			       bfd_size_type count)
    691 {
    692   struct esdid *esdid;
    693 
    694   if (!versados_pass_2 (abfd))
    695     return FALSE;
    696 
    697   esdid = &EDATA (abfd, section->target_index);
    698 
    699   if (esdid->contents == NULL
    700       || offset < 0
    701       || (bfd_size_type) offset > esdid->content_size
    702       || offset + count > esdid->content_size)
    703     return FALSE;
    704 
    705   memcpy (location, esdid->contents + offset, (size_t) count);
    706 
    707   return TRUE;
    708 }
    709 
    710 #define versados_get_section_contents_in_window \
    711   _bfd_generic_get_section_contents_in_window
    712 
    713 static bfd_boolean
    714 versados_set_section_contents (bfd *abfd ATTRIBUTE_UNUSED,
    715 			       sec_ptr section ATTRIBUTE_UNUSED,
    716 			       const void * location ATTRIBUTE_UNUSED,
    717 			       file_ptr offset ATTRIBUTE_UNUSED,
    718 			       bfd_size_type bytes_to_do ATTRIBUTE_UNUSED)
    719 {
    720   return FALSE;
    721 }
    722 
    723 static int
    724 versados_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
    725 			 struct bfd_link_info *info ATTRIBUTE_UNUSED)
    726 {
    727   return 0;
    728 }
    729 
    730 /* Return the amount of memory needed to read the symbol table.  */
    731 
    732 static long
    733 versados_get_symtab_upper_bound (bfd *abfd)
    734 {
    735   return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
    736 }
    737 
    738 /* Return the symbol table.  */
    739 
    740 static long
    741 versados_canonicalize_symtab (bfd *abfd, asymbol **alocation)
    742 {
    743   unsigned int symcount = bfd_get_symcount (abfd);
    744   unsigned int i;
    745   asymbol *s;
    746 
    747   versados_pass_2 (abfd);
    748 
    749   for (i = 0, s = VDATA (abfd)->symbols;
    750        i < symcount;
    751        s++, i++)
    752     *alocation++ = s;
    753 
    754   *alocation = NULL;
    755 
    756   return symcount;
    757 }
    758 
    759 static void
    760 versados_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
    761 			  asymbol *symbol,
    762 			  symbol_info *ret)
    763 {
    764   bfd_symbol_info (symbol, ret);
    765 }
    766 
    767 static void
    768 versados_print_symbol (bfd *abfd,
    769 		       void * afile,
    770 		       asymbol *symbol,
    771 		       bfd_print_symbol_type how)
    772 {
    773   FILE *file = (FILE *) afile;
    774 
    775   switch (how)
    776     {
    777     case bfd_print_symbol_name:
    778       fprintf (file, "%s", symbol->name);
    779       break;
    780     default:
    781       bfd_print_symbol_vandf (abfd, (void *) file, symbol);
    782       fprintf (file, " %-5s %s",
    783 	       symbol->section->name,
    784 	       symbol->name);
    785     }
    786 }
    787 
    788 static long
    789 versados_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
    790 				sec_ptr asect)
    791 {
    792   return (asect->reloc_count + 1) * sizeof (arelent *);
    793 }
    794 
    795 static long
    796 versados_canonicalize_reloc (bfd *abfd,
    797 			     sec_ptr section,
    798 			     arelent **relptr,
    799 			     asymbol **symbols)
    800 {
    801   unsigned int count;
    802   arelent *src;
    803 
    804   versados_pass_2 (abfd);
    805   src = section->relocation;
    806 
    807   if (!EDATA (abfd, section->target_index).donerel)
    808     {
    809       EDATA (abfd, section->target_index).donerel = 1;
    810       /* Translate from indexes to symptr ptrs.  */
    811       for (count = 0; count < section->reloc_count; count++)
    812 	{
    813 	  int esdid = (int) (size_t) src[count].sym_ptr_ptr;
    814 
    815 	  if (esdid == 0)
    816 	    src[count].sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
    817 	  else if (esdid < ES_BASE)
    818 	    {
    819 	      /* Section relative thing.  */
    820 	      struct esdid *e = &EDATA (abfd, esdid - 1);
    821 
    822 	      /* PR 17512: file:cd92277c.  */
    823 	      if (e->section)
    824 		src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr;
    825 	      else
    826 		src[count].sym_ptr_ptr = bfd_und_section_ptr->symbol_ptr_ptr;
    827 	    }
    828 	  /* PR 17512: file:3757-2936-0.004.  */
    829 	  else if ((unsigned) (esdid - ES_BASE) >= bfd_get_symcount (abfd))
    830 	    src[count].sym_ptr_ptr = bfd_und_section_ptr->symbol_ptr_ptr;
    831 	  else
    832 	    src[count].sym_ptr_ptr = symbols + esdid - ES_BASE;
    833 	}
    834     }
    835 
    836   for (count = 0; count < section->reloc_count; count++)
    837     *relptr++ = src++;
    838 
    839   *relptr = 0;
    840   return section->reloc_count;
    841 }
    842 
    843 #define	versados_close_and_cleanup                    _bfd_generic_close_and_cleanup
    844 #define versados_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
    845 #define versados_new_section_hook                     _bfd_generic_new_section_hook
    846 #define versados_bfd_is_target_special_symbol   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
    847 #define versados_bfd_is_local_label_name              bfd_generic_is_local_label_name
    848 #define versados_get_lineno                           _bfd_nosymbols_get_lineno
    849 #define versados_find_nearest_line                    _bfd_nosymbols_find_nearest_line
    850 #define versados_find_line                            _bfd_nosymbols_find_line
    851 #define versados_find_inliner_info                    _bfd_nosymbols_find_inliner_info
    852 #define versados_get_symbol_version_string	      _bfd_nosymbols_get_symbol_version_string
    853 #define versados_make_empty_symbol                    _bfd_generic_make_empty_symbol
    854 #define versados_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
    855 #define versados_read_minisymbols                     _bfd_generic_read_minisymbols
    856 #define versados_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
    857 #define versados_bfd_reloc_type_lookup                _bfd_norelocs_bfd_reloc_type_lookup
    858 #define versados_bfd_reloc_name_lookup          _bfd_norelocs_bfd_reloc_name_lookup
    859 #define versados_set_arch_mach                        bfd_default_set_arch_mach
    860 #define versados_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
    861 #define versados_bfd_relax_section                    bfd_generic_relax_section
    862 #define versados_bfd_gc_sections                      bfd_generic_gc_sections
    863 #define versados_bfd_lookup_section_flags             bfd_generic_lookup_section_flags
    864 #define versados_bfd_merge_sections                   bfd_generic_merge_sections
    865 #define versados_bfd_is_group_section                 bfd_generic_is_group_section
    866 #define versados_bfd_discard_group                    bfd_generic_discard_group
    867 #define versados_section_already_linked               _bfd_generic_section_already_linked
    868 #define versados_bfd_define_common_symbol             bfd_generic_define_common_symbol
    869 #define versados_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
    870 #define versados_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
    871 #define versados_bfd_link_just_syms                   _bfd_generic_link_just_syms
    872 #define versados_bfd_copy_link_hash_symbol_type \
    873   _bfd_generic_copy_link_hash_symbol_type
    874 #define versados_bfd_final_link                       _bfd_generic_final_link
    875 #define versados_bfd_link_split_section               _bfd_generic_link_split_section
    876 #define versados_bfd_link_check_relocs                _bfd_generic_link_check_relocs
    877 
    878 const bfd_target m68k_versados_vec =
    879 {
    880   "versados",			/* Name.  */
    881   bfd_target_versados_flavour,
    882   BFD_ENDIAN_BIG,		/* Target byte order.  */
    883   BFD_ENDIAN_BIG,		/* Target headers byte order.  */
    884   (HAS_RELOC | EXEC_P |		/* Object flags.  */
    885    HAS_LINENO | HAS_DEBUG |
    886    HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
    887   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
    888    | SEC_ALLOC | SEC_LOAD | SEC_RELOC),		/* Section flags.  */
    889   0,				/* Leading underscore.  */
    890   ' ',				/* AR_pad_char.  */
    891   16,				/* AR_max_namelen.  */
    892   0,				/* match priority.  */
    893   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
    894   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
    895   bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Data.  */
    896   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
    897   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
    898   bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* Headers.  */
    899 
    900   {
    901     _bfd_dummy_target,
    902     versados_object_p,		/* bfd_check_format.  */
    903     _bfd_dummy_target,
    904     _bfd_dummy_target,
    905   },
    906   {
    907     bfd_false,
    908     versados_mkobject,
    909     _bfd_generic_mkarchive,
    910     bfd_false,
    911   },
    912   {				/* bfd_write_contents.  */
    913     bfd_false,
    914     bfd_false,
    915     _bfd_write_archive_contents,
    916     bfd_false,
    917   },
    918 
    919   BFD_JUMP_TABLE_GENERIC (versados),
    920   BFD_JUMP_TABLE_COPY (_bfd_generic),
    921   BFD_JUMP_TABLE_CORE (_bfd_nocore),
    922   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
    923   BFD_JUMP_TABLE_SYMBOLS (versados),
    924   BFD_JUMP_TABLE_RELOCS (versados),
    925   BFD_JUMP_TABLE_WRITE (versados),
    926   BFD_JUMP_TABLE_LINK (versados),
    927   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
    928 
    929   NULL,
    930 
    931   NULL
    932 };
    933