bfd/bout.c

   1 /* BFD back-end for Intel 960 b.out binaries.
   2    Copyright (C) 1990-1991 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /* $Id$ */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libbfd.h"
  26
  27 #include "bout.h"
  28
  29 #include "aout/stab_gnu.h"
  30 #include "libaout.h"            /* BFD a.out internal data structures */
  31
  32 PROTO (static boolean, b_out_squirt_out_relocs,(bfd *abfd, asection *section));
  33 PROTO (static bfd_target *, b_out_callback, (bfd *));
  34
  35 PROTO (boolean, aout_32_slurp_symbol_table, (bfd *abfd));
  36 PROTO (void , aout_32_write_syms, ());
  37
  38 /* Swaps the information in an executable header taken from a raw byte
  39    stream memory image, into the internal exec_header structure.  */
  40
  41 PROTO(void, bout_swap_exec_header_in,
  42       (bfd *abfd,
  43       struct external_exec *raw_bytes,
  44       struct internal_exec *execp));
  45
  46 void
  47 DEFUN(bout_swap_exec_header_in,(abfd, raw_bytes, execp),
  48       bfd *abfd AND
  49       struct external_exec *raw_bytes AND
  50       struct internal_exec *execp)
  51 {
  52   struct external_exec *bytes = (struct external_exec *)raw_bytes;
  53
  54   /* Now fill in fields in the execp, from the bytes in the raw data.  */
  55   execp->a_info   = bfd_h_get_32 (abfd, bytes->e_info);
  56   execp->a_text   = GET_WORD (abfd, bytes->e_text);
  57   execp->a_data   = GET_WORD (abfd, bytes->e_data);
  58   execp->a_bss    = GET_WORD (abfd, bytes->e_bss);
  59   execp->a_syms   = GET_WORD (abfd, bytes->e_syms);
  60   execp->a_entry  = GET_WORD (abfd, bytes->e_entry);
  61   execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
  62   execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
  63   execp->a_tload  = GET_WORD (abfd, bytes->e_tload);
  64   execp->a_dload  = GET_WORD (abfd, bytes->e_dload);
  65   execp->a_talign = bytes->e_talign[0];
  66   execp->a_dalign = bytes->e_dalign[0];
  67   execp->a_balign = bytes->e_balign[0];
  68 }
  69
  70 /* Swaps the information in an internal exec header structure into the
  71    supplied buffer ready for writing to disk.  */
  72
  73 PROTO(void, bout_swap_exec_header_out,
  74           (bfd *abfd,
  75            struct internal_exec *execp,
  76            struct external_exec *raw_bytes));
  77 void
  78 DEFUN(bout_swap_exec_header_out,(abfd, execp, raw_bytes),
  79      bfd *abfd AND
  80      struct internal_exec *execp AND
  81      struct external_exec *raw_bytes)
  82 {
  83   struct external_exec *bytes = (struct external_exec *)raw_bytes;
  84
  85   /* Now fill in fields in the raw data, from the fields in the exec struct. */
  86   bfd_h_put_32 (abfd, execp->a_info  , bytes->e_info);
  87   PUT_WORD (abfd, execp->a_text  , bytes->e_text);
  88   PUT_WORD (abfd, execp->a_data  , bytes->e_data);
  89   PUT_WORD (abfd, execp->a_bss   , bytes->e_bss);
  90   PUT_WORD (abfd, execp->a_syms  , bytes->e_syms);
  91   PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
  92   PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
  93   PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
  94   PUT_WORD (abfd, execp->a_tload , bytes->e_tload);
  95   PUT_WORD (abfd, execp->a_dload , bytes->e_dload);
  96   bytes->e_talign[0] = execp->a_talign;
  97   bytes->e_dalign[0] = execp->a_dalign;
  98   bytes->e_balign[0] = execp->a_balign;
  99   bytes->e_unused[0] = 0;               /* Clean structs are godly structs */
 100 }
 101
 102
 103 static bfd_target *
 104 b_out_object_p (abfd)
 105      bfd *abfd;
 106 {
 107   struct internal_exec anexec;
 108   struct external_exec exec_bytes;
 109
 110   if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
 111       != EXEC_BYTES_SIZE) {
 112     bfd_error = wrong_format;
 113     return 0;
 114   }
 115
 116   anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
 117
 118   if (N_BADMAG (anexec)) {
 119     bfd_error = wrong_format;
 120     return 0;
 121   }
 122
 123   bout_swap_exec_header_in (abfd, &exec_bytes, &anexec);
 124   return aout_32_some_aout_object_p (abfd, &anexec, b_out_callback);
 125 }
 126
 127
 128 /* Finish up the opening of a b.out file for reading.  Fill in all the
 129    fields that are not handled by common code.  */
 130
 131 static bfd_target *
 132 b_out_callback (abfd)
 133      bfd *abfd;
 134 {
 135   struct internal_exec *execp = exec_hdr (abfd);
 136   unsigned long bss_start;
 137
 138   /* Architecture and machine type */
 139   bfd_set_arch_mach(abfd,
 140                     bfd_arch_i960, /* B.out only used on i960 */
 141                     bfd_mach_i960_core /* Default */
 142                     );
 143
 144   /* The positions of the string table and symbol table.  */
 145   obj_str_filepos (abfd) = N_STROFF (*execp);
 146   obj_sym_filepos (abfd) = N_SYMOFF (*execp);
 147
 148   /* The alignments of the sections */
 149   obj_textsec (abfd)->alignment_power = execp->a_talign;
 150   obj_datasec (abfd)->alignment_power = execp->a_dalign;
 151   obj_bsssec  (abfd)->alignment_power = execp->a_balign;
 152
 153   /* The starting addresses of the sections.  */
 154   obj_textsec (abfd)->vma = execp->a_tload;
 155   obj_datasec (abfd)->vma = execp->a_dload;
 156
 157   /* And reload the sizes, since the aout module zaps them */
 158   obj_textsec (abfd)->_raw_size = execp->a_text;
 159
 160   bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
 161   obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
 162
 163   /* The file positions of the sections */
 164   obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
 165   obj_datasec (abfd)->filepos = N_DATOFF(*execp);
 166
 167   /* The file positions of the relocation info */
 168   obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
 169   obj_datasec (abfd)->rel_filepos =  N_DROFF(*execp);
 170
 171   adata(abfd).page_size = 1; /* Not applicable. */
 172   adata(abfd).segment_size = 1; /* Not applicable. */
 173   adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 174
 175   return abfd->xvec;
 176 }
 177
 178 struct bout_data_struct {
 179     struct aoutdata a;
 180     struct internal_exec e;
 181 };
 182
 183 static boolean
 184 b_out_mkobject (abfd)
 185      bfd *abfd;
 186 {
 187   struct bout_data_struct *rawptr;
 188
 189   rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
 190   if (rawptr == NULL) {
 191       bfd_error = no_memory;
 192       return false;
 193     }
 194
 195   abfd->tdata.bout_data = rawptr;
 196   exec_hdr (abfd) = &rawptr->e;
 197
 198   /* For simplicity's sake we just make all the sections right here. */
 199   obj_textsec (abfd) = (asection *)NULL;
 200   obj_datasec (abfd) = (asection *)NULL;
 201   obj_bsssec (abfd) = (asection *)NULL;
 202
 203   bfd_make_section (abfd, ".text");
 204   bfd_make_section (abfd, ".data");
 205   bfd_make_section (abfd, ".bss");
 206
 207   return true;
 208 }
 209
 210 static boolean
 211 b_out_write_object_contents (abfd)
 212      bfd *abfd;
 213 {
 214   struct external_exec swapped_hdr;
 215
 216   exec_hdr (abfd)->a_info = BMAGIC;
 217
 218   exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size;
 219   exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size;
 220   exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size;
 221   exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
 222   exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
 223   exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
 224                                sizeof (struct relocation_info));
 225   exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
 226                                sizeof (struct relocation_info));
 227
 228   exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
 229   exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
 230   exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
 231
 232   exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
 233   exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
 234
 235   bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
 236
 237   bfd_seek (abfd, 0L, SEEK_SET);
 238   bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd);
 239
 240   /* Now write out reloc info, followed by syms and strings */
 241   if (bfd_get_symcount (abfd) != 0)
 242     {
 243       bfd_seek (abfd,
 244                 (long)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET);
 245
 246       aout_32_write_syms (abfd);
 247
 248       bfd_seek (abfd,   (long)(N_TROFF(*exec_hdr(abfd))), SEEK_SET);
 249
 250       if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
 251       bfd_seek (abfd, (long)(N_DROFF(*exec_hdr(abfd))), SEEK_SET);
 252
 253       if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
 254     }
 255   return true;
 256 }
 257 \f
 258 /** Some reloc hackery */
 259
 260 #define CALLS    0x66003800     /* Template for 'calls' instruction     */
 261 #define BAL      0x0b000000     /* Template for 'bal' instruction       */
 262 #define BAL_MASK 0x00ffffff
 263
 264 static bfd_reloc_status_type
 265 callj_callback(abfd, reloc_entry, symbol_in, data, input_section)
 266 bfd *abfd;
 267 arelent *reloc_entry;
 268 asymbol *symbol_in;
 269 PTR data;
 270 asection *input_section;
 271 {
 272   int  word = bfd_get_32(abfd, data+reloc_entry->address);
 273   aout_symbol_type  *symbol = aout_symbol(symbol_in);
 274
 275   if (IS_OTHER(symbol->other)) {
 276     /* Call to a system procedure - replace code with system
 277        procedure number
 278        */
 279
 280     word = CALLS | (symbol->other - 1);
 281     bfd_put_32(abfd, word,  data+reloc_entry->address); /* replace */
 282     return bfd_reloc_ok;
 283   }
 284
 285   if (IS_CALLNAME(symbol->other)) {
 286     aout_symbol_type *balsym = symbol+1;
 287     /* The next symbol should be an N_BALNAME */
 288     BFD_ASSERT(IS_BALNAME(balsym->other));
 289
 290     /* We are calling a leaf - so replace the call instruction
 291        with a bal */
 292
 293     word = BAL |
 294       (((word & BAL_MASK) +
 295         balsym->symbol.section->output_offset +
 296         balsym->symbol.section->output_section->vma+
 297         balsym->symbol.value + reloc_entry->addend -
 298         ( input_section->output_section->vma + input_section->output_offset))
 299        & BAL_MASK);
 300
 301     bfd_put_32(abfd, word,  data+reloc_entry->address); /* replace */
 302     return bfd_reloc_ok;
 303   }
 304   return bfd_reloc_continue;
 305
 306 }
 307 /* type rshift size  bitsize    pcrel   bitpos  absolute overflow check*/
 308
 309
 310 static reloc_howto_type howto_reloc_callj =
 311 HOWTO( 3, 0, 2, 24, true, 0, true, true, callj_callback,"callj", true, 0x00ffffff, 0x00ffffff,false);
 312 static  reloc_howto_type howto_reloc_abs32 =
 313 HOWTO(1, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
 314 static reloc_howto_type howto_reloc_pcrel24 =
 315 HOWTO(2, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
 316
 317 /* Allocate enough room for all the reloc entries, plus pointers to them all */
 318
 319 static boolean
 320 b_out_slurp_reloc_table (abfd, asect, symbols)
 321      bfd *abfd;
 322      sec_ptr asect;
 323      asymbol **symbols;
 324 {
 325   register struct relocation_info *rptr;
 326   unsigned int counter ;
 327   arelent *cache_ptr ;
 328   int extern_mask, pcrel_mask, callj_mask;
 329
 330   unsigned int count;
 331   size_t  reloc_size;
 332   struct relocation_info *relocs;
 333   arelent *reloc_cache;
 334
 335   if (asect->relocation) return true;
 336   if (!aout_32_slurp_symbol_table (abfd)) return false;
 337
 338   if (asect == obj_datasec (abfd)) {
 339       reloc_size = exec_hdr(abfd)->a_drsize;
 340       goto doit;
 341     }
 342
 343   if (asect == obj_textsec (abfd)) {
 344       reloc_size = exec_hdr(abfd)->a_trsize;
 345       goto doit;
 346     }
 347
 348   bfd_error = invalid_operation;
 349   return false;
 350
 351  doit:
 352   bfd_seek (abfd, (long)(asect->rel_filepos),  SEEK_SET);
 353   count = reloc_size / sizeof (struct relocation_info);
 354
 355   relocs = (struct relocation_info *) bfd_xmalloc (reloc_size);
 356   if (!relocs) {
 357       bfd_error = no_memory;
 358       return false;
 359     }
 360   reloc_cache = (arelent *) bfd_xmalloc ((count+1) * sizeof (arelent));
 361   if (!reloc_cache) {
 362       free ((char*)relocs);
 363       bfd_error = no_memory;
 364       return false;
 365     }
 366
 367   if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
 368       bfd_error = system_call_error;
 369       free (reloc_cache);
 370       free (relocs);
 371       return false;
 372     }
 373
 374
 375
 376   if (abfd->xvec->header_byteorder_big_p) {
 377       /* big-endian bit field allocation order */
 378       pcrel_mask  = 0x80;
 379       extern_mask = 0x10;
 380       callj_mask  = 0x02;
 381     } else {
 382         /* little-endian bit field allocation order */
 383         pcrel_mask  = 0x01;
 384         extern_mask = 0x08;
 385         callj_mask  = 0x40;
 386       }
 387
 388   for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
 389        counter < count;
 390        counter++, rptr++, cache_ptr++)
 391   {
 392     unsigned char *raw = (unsigned char *)rptr;
 393     unsigned int symnum;
 394     cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
 395     if (abfd->xvec->header_byteorder_big_p)
 396     {
 397       symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
 398     }
 399     else
 400     {
 401       symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
 402     }
 403
 404     if (raw[7] & extern_mask)
 405     {
 406         /* if this is set then the r_index is a index into the symbol table;
 407          * if the bit is not set then r_index contains a section map.
 408          * we either fill in the sym entry with a pointer to the symbol,
 409          * or point to the correct section
 410          */
 411         cache_ptr->sym_ptr_ptr = symbols + symnum;
 412         cache_ptr->addend = 0;
 413       } else
 414       {
 415           /* in a.out symbols are relative to the beginning of the
 416            * file rather than sections ?
 417            * (look in translate_from_native_sym_flags)
 418            * the reloc entry addend has added to it the offset into the
 419            * file of the data, so subtract the base to make the reloc
 420            * section relative */
 421           cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
 422           switch (symnum)
 423           {
 424             case N_TEXT:
 425             case N_TEXT | N_EXT:
 426               cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr;
 427               cache_ptr->addend = - obj_textsec(abfd)->vma;
 428               break;
 429             case N_DATA:
 430             case N_DATA | N_EXT:
 431               cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr;
 432               cache_ptr->addend = - obj_datasec(abfd)->vma;
 433               break;
 434             case N_BSS:
 435             case N_BSS | N_EXT:
 436               cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
 437               cache_ptr->addend =  - obj_bsssec(abfd)->vma;
 438               break;
 439             case N_ABS:
 440             case N_ABS | N_EXT:
 441               bfd_assert(0);
 442               break;
 443             default:
 444               bfd_assert(0);
 445               break;
 446             }
 447
 448         }
 449
 450     /* the i960 only has a few relocation types:
 451        abs 32-bit and pcrel 24bit.   except for callj's!  */
 452     if (raw[7] & callj_mask)
 453      cache_ptr->howto = &howto_reloc_callj;
 454     else if ( raw[7] & pcrel_mask)
 455      cache_ptr->howto = &howto_reloc_pcrel24;
 456     else
 457      cache_ptr->howto = &howto_reloc_abs32;
 458   }
 459
 460
 461   free (relocs);
 462   asect->relocation = reloc_cache;
 463   asect->reloc_count = count;
 464
 465
 466   return true;
 467 }
 468
 469
 470 static boolean
 471 b_out_squirt_out_relocs (abfd, section)
 472      bfd *abfd;
 473      asection *section;
 474 {
 475
 476   arelent **generic;
 477   int r_extern;
 478   int r_idx;
 479   int r_addend;
 480
 481   unsigned int count = section->reloc_count;
 482   struct relocation_info *native, *natptr;
 483   size_t natsize = count * sizeof (struct relocation_info);
 484   int extern_mask, pcrel_mask,  len_2, callj_mask;
 485   if (count == 0) return true;
 486   generic   = section->orelocation;
 487   native = ((struct relocation_info *) bfd_xmalloc (natsize));
 488   if (!native) {
 489       bfd_error = no_memory;
 490       return false;
 491     }
 492
 493   if (abfd->xvec->header_byteorder_big_p)
 494   {
 495     /* Big-endian bit field allocation order */
 496     pcrel_mask  = 0x80;
 497     extern_mask = 0x10;
 498     len_2       = 0x40;
 499     callj_mask  = 0x02;
 500   }
 501 else
 502   {
 503     /* Little-endian bit field allocation order */
 504     pcrel_mask  = 0x01;
 505     extern_mask = 0x08;
 506     len_2       = 0x04;
 507     callj_mask  = 0x40;
 508   }
 509
 510   for (natptr = native; count > 0; --count, ++natptr, ++generic)
 511   {
 512     arelent *g = *generic;
 513     unsigned char *raw = (unsigned char *)natptr;
 514     unsigned int symnum;
 515     asymbol *sym = *(g->sym_ptr_ptr);
 516
 517     asection *output_section = sym->section->output_section;
 518     bfd_h_put_32(abfd, g->address, raw);
 519     /* Find a type in the output format which matches the input howto -
 520      * at the moment we assume input format == output format FIXME!!
 521      */
 522     /* FIXME:  Need callj stuff here, and to check the howto entries to
 523        be sure they are real for this architecture.  */
 524     if (g->howto== &howto_reloc_callj)
 525     {
 526       raw[7] = callj_mask + pcrel_mask + len_2;
 527     }
 528     else if (g->howto == &howto_reloc_pcrel24)
 529     {
 530       raw[7] = pcrel_mask +len_2;
 531     }
 532     else {
 533         raw[7] = len_2;
 534       }
 535     if (output_section == &bfd_abs_section)
 536     {
 537       r_extern = 0;
 538       r_idx = N_ABS;
 539       r_addend += sym->value;
 540     }
 541     else if (output_section == &bfd_com_section
 542              || output_section == &bfd_und_section)
 543     {
 544       /* Fill in symbol */
 545       r_extern = 1;
 546       r_idx =  stoi((*(g->sym_ptr_ptr))->flags);
 547     }
 548     else
 549     {
 550       /* Just an ordinary section */
 551       r_extern = 0;
 552       r_idx  = output_section->target_index;
 553     }
 554
 555     if (abfd->xvec->header_byteorder_big_p) {
 556         raw[4] = (unsigned char) (r_idx >> 16);
 557         raw[5] = (unsigned char) (r_idx >>  8);
 558         raw[6] = (unsigned char) (r_idx     );
 559       } else {
 560           raw[6] = (unsigned char) (r_idx >> 16);
 561           raw[5] = (unsigned char) (r_idx>>  8);
 562           raw[4] = (unsigned char) (r_idx     );
 563         }
 564 if (r_extern)
 565     raw[7] |= extern_mask;
 566   }
 567
 568   if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
 569       free((PTR)native);
 570       return false;
 571     }
 572   free ((PTR)native);
 573
 574   return true;
 575 }
 576
 577 /* This is stupid.  This function should be a boolean predicate */
 578 static unsigned int
 579 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
 580      bfd *abfd;
 581      sec_ptr section;
 582      arelent **relptr;
 583      asymbol **symbols;
 584 {
 585   arelent *tblptr = section->relocation;
 586   unsigned int count = 0;
 587
 588  if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
 589   tblptr = section->relocation;
 590  if (!tblptr) return 0;
 591
 592   for (; count++ < section->reloc_count;)
 593     *relptr++ = tblptr++;
 594
 595   *relptr = 0;
 596
 597   return section->reloc_count;
 598 }
 599
 600 static unsigned int
 601 b_out_get_reloc_upper_bound (abfd, asect)
 602      bfd *abfd;
 603      sec_ptr asect;
 604 {
 605   if (bfd_get_format (abfd) != bfd_object) {
 606     bfd_error = invalid_operation;
 607     return 0;
 608   }
 609
 610   if (asect == obj_datasec (abfd))
 611     return (sizeof (arelent *) *
 612             ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
 613              +1));
 614
 615   if (asect == obj_textsec (abfd))
 616     return (sizeof (arelent *) *
 617             ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
 618              +1));
 619
 620   bfd_error = invalid_operation;
 621   return 0;
 622 }
 623 \f
 624 static boolean
 625 b_out_set_section_contents (abfd, section, location, offset, count)
 626      bfd *abfd;
 627      sec_ptr section;
 628      unsigned char *location;
 629      file_ptr offset;
 630       int count;
 631 {
 632
 633   if (abfd->output_has_begun == false) { /* set by bfd.c handler */
 634     if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
 635         (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
 636       bfd_error = invalid_operation;
 637       return false;
 638     }
 639
 640     obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
 641     obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
 642                                 +  obj_textsec (abfd)->_cooked_size;
 643
 644   }
 645   /* regardless, once we know what we're doing, we might as well get going */
 646   bfd_seek (abfd, section->filepos + offset, SEEK_SET);
 647
 648   if (count != 0) {
 649     return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
 650   }
 651   return true;
 652 }
 653
 654 static boolean
 655 b_out_set_arch_mach (abfd, arch, machine)
 656      bfd *abfd;
 657      enum bfd_architecture arch;
 658      unsigned long machine;
 659 {
 660   bfd_default_set_arch_mach(abfd, arch, machine);
 661
 662   if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
 663     return true;
 664   if (arch == bfd_arch_i960)    /* i960 default is OK */
 665     switch (machine) {
 666     case bfd_mach_i960_core:
 667     case bfd_mach_i960_kb_sb:
 668     case bfd_mach_i960_mc:
 669     case bfd_mach_i960_xa:
 670     case bfd_mach_i960_ca:
 671     case bfd_mach_i960_ka_sa:
 672     case 0:
 673       return true;
 674     default:
 675       return false;
 676     }
 677
 678   return false;
 679 }
 680
 681 static int
 682 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
 683       bfd *ignore_abfd AND
 684       boolean ignore)
 685 {
 686   return sizeof(struct internal_exec);
 687 }
 688
 689
 690
 691
 692 /* Build the transfer vectors for Big and Little-Endian B.OUT files.  */
 693
 694 /* We don't have core files.  */
 695 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
 696 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
 697 #define aout_32_core_file_matches_executable_p  \
 698                                 _bfd_dummy_core_file_matches_executable_p
 699
 700 /* We use BSD-Unix generic archive files.  */
 701 #define aout_32_openr_next_archived_file        bfd_generic_openr_next_archived_file
 702 #define aout_32_generic_stat_arch_elt   bfd_generic_stat_arch_elt
 703 #define aout_32_slurp_armap             bfd_slurp_bsd_armap
 704 #define aout_32_slurp_extended_name_table       bfd_true
 705 #define aout_32_write_armap             bsd_write_armap
 706 #define aout_32_truncate_arname         bfd_bsd_truncate_arname
 707
 708 /* We override these routines from the usual a.out file routines.  */
 709 #define aout_32_canonicalize_reloc      b_out_canonicalize_reloc
 710 #define aout_32_get_reloc_upper_bound   b_out_get_reloc_upper_bound
 711 #define aout_32_set_section_contents    b_out_set_section_contents
 712 #define aout_32_set_arch_mach           b_out_set_arch_mach
 713 #define aout_32_sizeof_headers          b_out_sizeof_headers
 714
 715 #define aout_32_bfd_debug_info_start            bfd_void
 716 #define aout_32_bfd_debug_info_end              bfd_void
 717 #define aout_32_bfd_debug_info_accumulate       (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
 718
 719 #define aout_32_bfd_get_relocated_section_contents  bfd_generic_get_relocated_section_contents
 720 #define aout_32_bfd_relax_section                   bfd_generic_relax_section
 721 bfd_target b_out_vec_big_host =
 722 {
 723   "b.out.big",                  /* name */
 724   bfd_target_aout_flavour,
 725   false,                        /* data byte order is little */
 726   true,                         /* hdr byte order is big */
 727   (HAS_RELOC | EXEC_P |         /* object flags */
 728    HAS_LINENO | HAS_DEBUG |
 729    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 730   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 731   ' ',                          /* ar_pad_char */
 732   16,                           /* ar_max_namelen */
 733      2,                         /* minumum alignment power */
 734
 735 _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 736 _do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
 737     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 738        bfd_generic_archive_p, _bfd_dummy_target},
 739     {bfd_false, b_out_mkobject, /* bfd_set_format */
 740        _bfd_generic_mkarchive, bfd_false},
 741     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 742        _bfd_write_archive_contents, bfd_false},
 743
 744   JUMP_TABLE(aout_32)
 745 };
 746
 747
 748 bfd_target b_out_vec_little_host =
 749 {
 750   "b.out.little",               /* name */
 751   bfd_target_aout_flavour,
 752   false,                        /* data byte order is little */
 753   false,                        /* header byte order is little */
 754   (HAS_RELOC | EXEC_P |         /* object flags */
 755    HAS_LINENO | HAS_DEBUG |
 756    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 757   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 758   ' ',                          /* ar_pad_char */
 759   16,                           /* ar_max_namelen */
 760      2,                         /* minum align */
 761 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 762 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
 763
 764     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 765        bfd_generic_archive_p, _bfd_dummy_target},
 766     {bfd_false, b_out_mkobject, /* bfd_set_format */
 767        _bfd_generic_mkarchive, bfd_false},
 768     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 769        _bfd_write_archive_contents, bfd_false},
 770   JUMP_TABLE(aout_32)
 771 };