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)->_cooked_size;
 219   exec_hdr (abfd)->a_data = obj_datasec (abfd)->_cooked_size;
 220   exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_cooked_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 unsigned char *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   abort();
 326
 327 #if 0
 328   unsigned int count;
 329   size_t  reloc_size;
 330   struct relocation_info *relocs;
 331   arelent *reloc_cache;
 332
 333   if (asect->relocation) return true;
 334   if (!aout_32_slurp_symbol_table (abfd)) return false;
 335
 336   if (asect == obj_datasec (abfd)) {
 337     reloc_size = exec_hdr(abfd)->a_drsize;
 338     goto doit;
 339   }
 340
 341   if (asect == obj_textsec (abfd)) {
 342     reloc_size = exec_hdr(abfd)->a_trsize;
 343     goto doit;
 344   }
 345
 346   bfd_error = invalid_operation;
 347   return false;
 348
 349  doit:
 350   bfd_seek (abfd, (long)(asect->rel_filepos), SEEK_SET);
 351   count = reloc_size / sizeof (struct relocation_info);
 352
 353   relocs = (struct relocation_info *) bfd_xmalloc (reloc_size);
 354   if (!relocs) {
 355     bfd_error = no_memory;
 356     return false;
 357   }
 358   reloc_cache = (arelent *) bfd_xmalloc ((count+1) * sizeof (arelent));
 359   if (!reloc_cache) {
 360     free ((char*)relocs);
 361     bfd_error = no_memory;
 362     return false;
 363   }
 364
 365   if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
 366     bfd_error = system_call_error;
 367     free (reloc_cache);
 368     free (relocs);
 369     return false;
 370   }
 371
 372   {
 373     register struct relocation_info *rptr = relocs;
 374     unsigned int counter = 0;
 375     arelent *cache_ptr = reloc_cache;
 376     int extern_mask, pcrel_mask, callj_mask;
 377
 378     if (abfd->xvec->header_byteorder_big_p) {
 379       /* Big-endian bit field allocation order */
 380       pcrel_mask  = 0x80;
 381       extern_mask = 0x10;
 382       callj_mask  = 0x02;
 383     } else {
 384       /* Little-endian bit field allocation order */
 385       pcrel_mask  = 0x01;
 386       extern_mask = 0x08;
 387       callj_mask  = 0x40;
 388     }
 389
 390     for (; counter < count; 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           symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
 397         } else {
 398           symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
 399         }
 400
 401         if (raw[7] & extern_mask) {
 402           /* If this is set then the r_index is a index into the symbol table;
 403            * if the bit is not set then r_index contains a section map.
 404            * We either fill in the sym entry with a pointer to the symbol,
 405            * or point to the correct section
 406            */
 407           cache_ptr->sym_ptr_ptr = symbols + symnum;
 408           cache_ptr->addend = 0;
 409 /*!!      cache_ptr->section = (asection*)NULL;*/
 410         } else {
 411           /* In a.out symbols are relative to the beginning of the
 412            * file rather than sections ?
 413            * (look in translate_from_native_sym_flags)
 414            * The reloc entry addend has added to it the offset into the
 415            * file of the data, so subtract the base to make the reloc
 416            * section relative */
 417           cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
 418           switch (symnum) {
 419           case N_TEXT:
 420           case N_TEXT | N_EXT:
 421             cache_ptr->section = obj_textsec(abfd);
 422             cache_ptr->addend = -obj_textsec(abfd)->vma;
 423             break;
 424           case N_DATA:
 425           case N_DATA | N_EXT:
 426             cache_ptr->section = obj_datasec(abfd);
 427             cache_ptr->addend = - obj_datasec(abfd)->vma;
 428             break;
 429           case N_BSS:
 430           case N_BSS | N_EXT:
 431             cache_ptr->section = obj_bsssec(abfd);
 432             cache_ptr->addend =  - obj_bsssec(abfd)->vma;
 433             break;
 434           case N_ABS:
 435           case N_ABS | N_EXT:
 436             BFD_ASSERT(0);
 437             break;
 438           default:
 439             BFD_ASSERT(0);
 440             break;
 441           }
 442
 443         }
 444
 445         /* The i960 only has a few relocation types:
 446            abs 32-bit and pcrel 24bit.   Except for callj's!  */
 447         if (raw[7] & callj_mask)
 448           cache_ptr->howto = &howto_reloc_callj;
 449         else if ( raw[7] & pcrel_mask)
 450           cache_ptr->howto = &howto_reloc_pcrel24;
 451         else
 452           cache_ptr->howto = &howto_reloc_abs32;
 453       }
 454   }
 455
 456   free (relocs);
 457   asect->relocation = reloc_cache;
 458   asect->reloc_count = count;
 459
 460 #endif
 461   return true;
 462 }
 463
 464
 465 static boolean
 466 b_out_squirt_out_relocs (abfd, section)
 467      bfd *abfd;
 468      asection *section;
 469 {
 470   abort();
 471
 472 #if 0
 473   arelent **generic;
 474
 475   unsigned int count = section->reloc_count;
 476   struct relocation_info *native, *natptr;
 477   size_t natsize = count * sizeof (struct relocation_info);
 478   int extern_mask, pcrel_mask,  len_2, callj_mask;
 479   if (count == 0) return true;
 480   generic   = section->orelocation;
 481   native = ((struct relocation_info *) bfd_xmalloc (natsize));
 482   if (!native) {
 483     bfd_error = no_memory;
 484     return false;
 485   }
 486
 487    if (abfd->xvec->header_byteorder_big_p) {
 488        /* Big-endian bit field allocation order */
 489        pcrel_mask  = 0x80;
 490        extern_mask = 0x10;
 491        len_2       = 0x40;
 492       callj_mask  = 0x02;
 493    } else {
 494        /* Little-endian bit field allocation order */
 495        pcrel_mask  = 0x01;
 496        extern_mask = 0x08;
 497        len_2       = 0x04;
 498       callj_mask  = 0x40;
 499    }
 500
 501   for (natptr = native; count > 0; --count, ++natptr, ++generic)
 502     {
 503       arelent *g = *generic;
 504       unsigned char *raw = (unsigned char *)natptr;
 505       unsigned int symnum;
 506
 507       bfd_h_put_32(abfd, g->address, raw);
 508       /* Find a type in the output format which matches the input howto -
 509        * at the moment we assume input format == output format FIXME!!
 510        */
 511       /* FIXME:  Need callj stuff here, and to check the howto entries to
 512          be sure they are real for this architecture.  */
 513       if (g->howto== &howto_reloc_callj) {
 514         raw[7] = callj_mask + pcrel_mask + len_2;
 515       }
 516       else if (g->howto == &howto_reloc_pcrel24) {
 517         raw[7] = pcrel_mask +len_2;
 518       }
 519       else {
 520         raw[7] = len_2;
 521       }
 522       if (g->sym_ptr_ptr != (asymbol **)NULL)
 523         {
 524           /* name clobbered by aout_write_syms to be symbol index*/
 525           if ((*(g->sym_ptr_ptr))->section) {
 526             /* replace the section offset into the addent */
 527             g->addend += (*(g->sym_ptr_ptr))->section->vma ;
 528           }
 529           symnum = stoi((*(g->sym_ptr_ptr))->name);
 530           raw[7] |= extern_mask;
 531           BFD_ASSERT(g->addend == 0);
 532         }
 533       else {
 534         if (g->section == (asection *)NULL) {
 535           symnum = N_ABS;
 536           BFD_ASSERT(0);
 537         }
 538         else  if(g->section->output_section == obj_textsec(abfd)) {
 539           symnum = N_TEXT;
 540           BFD_ASSERT(g->addend + obj_textsec(abfd)->vma == 0);
 541         }
 542         else if (g->section->output_section == obj_datasec(abfd)) {
 543           symnum  = N_DATA;
 544           BFD_ASSERT(g->addend + obj_datasec(abfd)->vma == 0);
 545         }
 546         else if (g->section->output_section == obj_bsssec(abfd)) {
 547           symnum = N_BSS;
 548           BFD_ASSERT(g->addend + obj_bsssec(abfd)->vma == 0);
 549         }
 550         else {
 551           BFD_ASSERT(0);
 552           symnum = N_ABS;
 553         }
 554       }
 555       if (abfd->xvec->header_byteorder_big_p) {
 556         raw[4] = (unsigned char) (symnum >> 16);
 557         raw[5] = (unsigned char) (symnum >>  8);
 558         raw[6] = (unsigned char) (symnum      );
 559       } else {
 560         raw[6] = (unsigned char) (symnum >> 16);
 561         raw[5] = (unsigned char) (symnum >>  8);
 562         raw[4] = (unsigned char) (symnum      );
 563       }
 564     }
 565
 566   if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
 567     free((PTR)native);
 568     return false;
 569   }
 570   free ((PTR)native);
 571 #endif
 572   return true;
 573 }
 574
 575 /* This is stupid.  This function should be a boolean predicate */
 576 static unsigned int
 577 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
 578      bfd *abfd;
 579      sec_ptr section;
 580      arelent **relptr;
 581      asymbol **symbols;
 582 {
 583   arelent *tblptr = section->relocation;
 584   unsigned int count = 0;
 585
 586  if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
 587   tblptr = section->relocation;
 588  if (!tblptr) return 0;
 589
 590   for (; count++ < section->reloc_count;)
 591     *relptr++ = tblptr++;
 592
 593   *relptr = 0;
 594
 595   return section->reloc_count;
 596 }
 597
 598 static unsigned int
 599 b_out_get_reloc_upper_bound (abfd, asect)
 600      bfd *abfd;
 601      sec_ptr asect;
 602 {
 603   if (bfd_get_format (abfd) != bfd_object) {
 604     bfd_error = invalid_operation;
 605     return 0;
 606   }
 607
 608   if (asect == obj_datasec (abfd))
 609     return (sizeof (arelent *) *
 610             ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
 611              +1));
 612
 613   if (asect == obj_textsec (abfd))
 614     return (sizeof (arelent *) *
 615             ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
 616              +1));
 617
 618   bfd_error = invalid_operation;
 619   return 0;
 620 }
 621 \f
 622 static boolean
 623 b_out_set_section_contents (abfd, section, location, offset, count)
 624      bfd *abfd;
 625      sec_ptr section;
 626      unsigned char *location;
 627      file_ptr offset;
 628       int count;
 629 {
 630   if (abfd->output_has_begun == false) { /* set by bfd.c handler */
 631     if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
 632         (obj_textsec (abfd)->_cooked_size == 0) || (obj_datasec (abfd)->_cooked_size == 0)*/) {
 633       bfd_error = invalid_operation;
 634       return false;
 635     }
 636
 637     obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
 638     obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
 639                                 +  obj_textsec (abfd)->_cooked_size;
 640
 641   }
 642   /* regardless, once we know what we're doing, we might as well get going */
 643   bfd_seek (abfd, section->filepos + offset, SEEK_SET);
 644
 645   if (count != 0) {
 646     return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
 647   }
 648   return false;
 649 }
 650
 651 static boolean
 652 b_out_set_arch_mach (abfd, arch, machine)
 653      bfd *abfd;
 654      enum bfd_architecture arch;
 655      unsigned long machine;
 656 {
 657   bfd_default_set_arch_mach(abfd, arch, machine);
 658
 659   if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
 660     return true;
 661   if (arch == bfd_arch_i960)    /* i960 default is OK */
 662     switch (machine) {
 663     case bfd_mach_i960_core:
 664     case bfd_mach_i960_kb_sb:
 665     case bfd_mach_i960_mc:
 666     case bfd_mach_i960_xa:
 667     case bfd_mach_i960_ca:
 668     case bfd_mach_i960_ka_sa:
 669     case 0:
 670       return true;
 671     default:
 672       return false;
 673     }
 674
 675   return false;
 676 }
 677
 678 static int
 679 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
 680       bfd *ignore_abfd AND
 681       boolean ignore)
 682 {
 683   return sizeof(struct internal_exec);
 684 }
 685
 686
 687
 688
 689 /* Build the transfer vectors for Big and Little-Endian B.OUT files.  */
 690
 691 /* We don't have core files.  */
 692 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
 693 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
 694 #define aout_32_core_file_matches_executable_p  \
 695                                 _bfd_dummy_core_file_matches_executable_p
 696
 697 /* We use BSD-Unix generic archive files.  */
 698 #define aout_32_openr_next_archived_file        bfd_generic_openr_next_archived_file
 699 #define aout_32_generic_stat_arch_elt   bfd_generic_stat_arch_elt
 700 #define aout_32_slurp_armap             bfd_slurp_bsd_armap
 701 #define aout_32_slurp_extended_name_table       bfd_true
 702 #define aout_32_write_armap             bsd_write_armap
 703 #define aout_32_truncate_arname         bfd_bsd_truncate_arname
 704
 705 /* We override these routines from the usual a.out file routines.  */
 706 #define aout_32_canonicalize_reloc      b_out_canonicalize_reloc
 707 #define aout_32_get_reloc_upper_bound   b_out_get_reloc_upper_bound
 708 #define aout_32_set_section_contents    b_out_set_section_contents
 709 #define aout_32_set_arch_mach           b_out_set_arch_mach
 710 #define aout_32_sizeof_headers          b_out_sizeof_headers
 711
 712 #define aout_32_bfd_debug_info_start            bfd_void
 713 #define aout_32_bfd_debug_info_end              bfd_void
 714 #define aout_32_bfd_debug_info_accumulate       (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
 715
 716 #define aout_32_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
 717 bfd_target b_out_vec_big_host =
 718 {
 719   "b.out.big",                  /* name */
 720   bfd_target_aout_flavour,
 721   false,                        /* data byte order is little */
 722   true,                         /* hdr byte order is big */
 723   (HAS_RELOC | EXEC_P |         /* object flags */
 724    HAS_LINENO | HAS_DEBUG |
 725    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 726   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 727   ' ',                          /* ar_pad_char */
 728   16,                           /* ar_max_namelen */
 729      2,                         /* minumum alignment power */
 730
 731 _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 732 _do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
 733     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 734        bfd_generic_archive_p, _bfd_dummy_target},
 735     {bfd_false, b_out_mkobject, /* bfd_set_format */
 736        _bfd_generic_mkarchive, bfd_false},
 737     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 738        _bfd_write_archive_contents, bfd_false},
 739
 740   JUMP_TABLE(aout_32)
 741 };
 742
 743
 744 bfd_target b_out_vec_little_host =
 745 {
 746   "b.out.little",               /* name */
 747   bfd_target_aout_flavour,
 748   false,                        /* data byte order is little */
 749   false,                        /* header byte order is little */
 750   (HAS_RELOC | EXEC_P |         /* object flags */
 751    HAS_LINENO | HAS_DEBUG |
 752    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 753   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 754   ' ',                          /* ar_pad_char */
 755   16,                           /* ar_max_namelen */
 756      2,                         /* minum align */
 757 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 758 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
 759
 760     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 761        bfd_generic_archive_p, _bfd_dummy_target},
 762     {bfd_false, b_out_mkobject, /* bfd_set_format */
 763        _bfd_generic_mkarchive, bfd_false},
 764     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 765        _bfd_write_archive_contents, bfd_false},
 766   JUMP_TABLE(aout_32)
 767 };