bfd/bout.c

   1 /* BFD back-end for i960 b.out binaries */
   2
   3 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
   4
   5 This file is part of BFD, the Binary File Diddler.
   6
   7 BFD 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 1, or (at your option)
  10 any later version.
  11
  12 BFD 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 BFD; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /* $Id$ */
  22
  23 #include <sysdep.h>
  24 #include "bfd.h"
  25 #include "libbfd.h"
  26
  27
  28 #include "bout.h"
  29
  30
  31 #include "stab.gnu.h"
  32 #include "libaout.h"            /* BFD a.out internal data structures */
  33 #include "archures.h"
  34
  35 /* Align an address by rounding it up to a power of two.  It leaves the
  36    address unchanged if align == 0 (2^0 = alignment of 1 byte) */
  37 #define i960_align(addr, align) \
  38         ( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
  39
  40
  41
  42 PROTO (static boolean, b_out_squirt_out_relocs,(bfd *abfd, asection *section));
  43 PROTO (static bfd_target *, b_out_callback, (bfd *));
  44
  45 PROTO (boolean, aout_32_slurp_symbol_table, (bfd *abfd));
  46 PROTO (void , aout_32_write_syms, ());
  47
  48 PROTO (static void, swap_exec_header, (bfd *abfd, struct internal_exec *execp));
  49
  50
  51 static bfd_target *
  52 b_out_little_object_p (abfd)
  53      bfd *abfd;
  54 {
  55   unsigned char magicbytes[LONG_SIZE];
  56   struct internal_exec anexec;
  57
  58   if (bfd_read ((PTR)magicbytes, 1, LONG_SIZE, abfd) != LONG_SIZE) {
  59     bfd_error = system_call_error;
  60     return 0;
  61   }
  62   anexec.a_magic = _do_getl32 (magicbytes);
  63
  64   if (N_BADMAG (anexec)) {
  65     bfd_error = wrong_format;
  66     return 0;
  67   }
  68   return aout_32_some_aout_object_p (abfd, b_out_callback);
  69 }
  70
  71 static bfd_target *
  72 b_out_big_object_p (abfd)
  73      bfd *abfd;
  74 {
  75   unsigned char magicbytes[LONG_SIZE];
  76   struct internal_exec anexec;
  77
  78   if (bfd_read ((PTR)magicbytes, 1, LONG_SIZE, abfd) != LONG_SIZE) {
  79     bfd_error = system_call_error;
  80     return 0;
  81   }
  82
  83   anexec.a_magic = _do_getb32 (magicbytes);
  84
  85   if (N_BADMAG (anexec)) {
  86     bfd_error = wrong_format;
  87     return 0;
  88   }
  89   return aout_32_some_aout_object_p (abfd, b_out_callback);
  90 }
  91
  92 /* Finish up the opening of a b.out file for reading.  Fill in all the
  93    fields that are not handled by common code.  */
  94
  95 static bfd_target *
  96 b_out_callback (abfd)
  97      bfd *abfd;
  98 {
  99   struct internal_exec anexec;
 100   struct internal_exec *execp = &anexec;
 101   unsigned long bss_start;
 102
 103   /* Reread the exec header, because the common code didn't get all of
 104      our extended header.  */
 105
 106   if (bfd_seek (abfd, 0L, SEEK_SET) < 0) {
 107     bfd_error = system_call_error;
 108     return 0;
 109   }
 110
 111   /* FIXME, needs to be hacked for character array read-in ala sunos.c.  */
 112   if (bfd_read ((PTR) execp, 1, sizeof (struct internal_exec), abfd)
 113       != sizeof (struct internal_exec)) {
 114     bfd_error = wrong_format;
 115     return 0;
 116   }
 117
 118   swap_exec_header (abfd, execp);
 119
 120   /* Architecture and machine type */
 121   abfd->obj_arch = bfd_arch_i960;       /* B.out only used on i960 */
 122   abfd->obj_machine = bfd_mach_i960_core;       /* Default */
 123 /* FIXME:  Set real machine type from file here */
 124
 125   /* The positions of the string table and symbol table.  */
 126   obj_str_filepos (abfd) = N_STROFF (anexec);
 127   obj_sym_filepos (abfd) = N_SYMOFF (anexec);
 128
 129   /* The alignments of the sections */
 130   obj_textsec (abfd)->alignment_power = execp->a_talign;
 131   obj_datasec (abfd)->alignment_power = execp->a_dalign;
 132   obj_bsssec  (abfd)->alignment_power = execp->a_balign;
 133
 134   /* The starting addresses of the sections.  */
 135   obj_textsec (abfd)->vma = anexec.a_tload;
 136   obj_datasec (abfd)->vma = anexec.a_dload;
 137   bss_start = anexec.a_dload + anexec.a_data; /* BSS = end of data section */
 138   obj_bsssec (abfd)->vma = i960_align (bss_start, anexec.a_balign);
 139
 140   /* The file positions of the sections */
 141   obj_textsec (abfd)->filepos = N_TXTOFF(anexec);
 142   obj_datasec (abfd)->filepos = N_DATOFF(anexec);
 143
 144   /* The file positions of the relocation info */
 145   obj_textsec (abfd)->rel_filepos = N_TROFF(anexec);
 146   obj_datasec (abfd)->rel_filepos =  N_DROFF(anexec);
 147
 148   return abfd->xvec;
 149 }
 150
 151
 152 static boolean
 153 b_out_mkobject (abfd)
 154      bfd *abfd;
 155 {
 156   PTR  rawptr;
 157
 158   bfd_error = system_call_error;
 159
 160   /* Use an intermediate variable for clarity */
 161   rawptr = (PTR) zalloc (sizeof (struct aoutdata) + sizeof (struct internal_exec));
 162
 163   if (rawptr == (PTR)NULL) {
 164     bfd_error = no_memory;
 165     return false;
 166   }
 167
 168   set_tdata(abfd, (struct aoutdata *) rawptr);
 169   exec_hdr (abfd) = (struct internal_exec *) ( (char*)rawptr + sizeof (struct aoutdata));
 170
 171   /* For simplicity's sake we just make all the sections right here. */
 172   obj_textsec (abfd) = (asection *)NULL;
 173   obj_datasec (abfd) = (asection *)NULL;
 174   obj_bsssec (abfd) = (asection *)NULL;
 175
 176   bfd_make_section (abfd, ".text");
 177   bfd_make_section (abfd, ".data");
 178   bfd_make_section (abfd, ".bss");
 179
 180   return true;
 181 }
 182
 183 static boolean
 184 b_out_write_object_contents (abfd)
 185      bfd *abfd;
 186 {
 187   struct internal_exec swapped_hdr;
 188
 189   exec_hdr (abfd)->a_magic = BMAGIC;
 190
 191   exec_hdr (abfd)->a_text = obj_textsec (abfd)->size;
 192   exec_hdr (abfd)->a_data = obj_datasec (abfd)->size;
 193   exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->size;
 194   exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
 195   exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
 196   exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
 197                                sizeof (struct relocation_info));
 198   exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
 199                                sizeof (struct relocation_info));
 200
 201   exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
 202   exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
 203   exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
 204
 205   exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
 206   exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
 207
 208   /* FIXME, turn the header into bytes here, to avoid problems with
 209      sizes and alignments of its fields.  */
 210   swapped_hdr = *exec_hdr(abfd);
 211   swap_exec_header (abfd, &swapped_hdr);
 212
 213   bfd_seek (abfd, 0L, SEEK_SET);
 214   bfd_write ((PTR) &swapped_hdr, 1, sizeof (struct internal_exec), abfd);
 215
 216   /* Now write out reloc info, followed by syms and strings */
 217   if (bfd_get_symcount (abfd) != 0)
 218     {
 219       bfd_seek (abfd,
 220                 (long)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET);
 221
 222       aout_32_write_syms (abfd);
 223
 224       bfd_seek (abfd,   (long)(N_TROFF(*exec_hdr(abfd))), SEEK_SET);
 225
 226       if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
 227       bfd_seek (abfd, (long)(N_DROFF(*exec_hdr(abfd))), SEEK_SET);
 228
 229       if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
 230     }
 231   return true;
 232 }
 233
 234 static void
 235 swap_exec_header (abfd, execp)
 236      bfd *abfd;
 237      struct internal_exec *execp;
 238 {
 239 #define swapme(field)   field = bfd_h_get_32 (abfd, (unsigned char *)&field);
 240   swapme (execp->a_magic);
 241   swapme (execp->a_text);
 242   swapme (execp->a_data);
 243   swapme (execp->a_bss);
 244   swapme (execp->a_syms);
 245   swapme (execp->a_entry);
 246   swapme (execp->a_trsize);
 247   swapme (execp->a_drsize);
 248   swapme (execp->a_tload);
 249   swapme (execp->a_dload);
 250   /* talign, dalign, and balign are one-byte fields and don't swap.  */
 251 #undef swapme
 252 }
 253 \f
 254 /** Some reloc hackery */
 255
 256 #define CALLS    0x66003800     /* Template for 'calls' instruction     */
 257 #define BAL      0x0b000000     /* Template for 'bal' instruction       */
 258 #define BAL_MASK 0x00ffffff
 259
 260 static bfd_reloc_status_enum_type
 261 callj_callback(abfd, reloc_entry, symbol_in, data, input_section)
 262 bfd *abfd;
 263 arelent *reloc_entry;
 264 asymbol *symbol_in;
 265 unsigned char *data;
 266 asection *input_section;
 267 {
 268   int  word = bfd_get_32(abfd, data+reloc_entry->address);
 269   aout_symbol_type  *symbol = aout_symbol(symbol_in);
 270
 271   if (IS_OTHER(symbol->other)) {
 272     /* Call to a system procedure - replace code with system
 273        procedure number
 274        */
 275
 276     word = CALLS | (symbol->other - 1);
 277     bfd_put_32(abfd, word,  data+reloc_entry->address); /* replace */
 278     return bfd_reloc_ok;
 279   }
 280
 281   if (IS_CALLNAME(symbol->other)) {
 282     aout_symbol_type *balsym = symbol+1;
 283     /* The next symbol should be an N_BALNAME */
 284     BFD_ASSERT(IS_BALNAME(balsym->other));
 285
 286     /* We are calling a leaf - so replace the call instruction
 287        with a bal */
 288
 289     word = BAL |
 290       (((word & BAL_MASK) +
 291         balsym->symbol.section->output_offset +
 292         balsym->symbol.section->output_section->vma+
 293         balsym->symbol.value + reloc_entry->addend -
 294         ( input_section->output_section->vma + input_section->output_offset))
 295        & BAL_MASK);
 296
 297     bfd_put_32(abfd, word,  data+reloc_entry->address); /* replace */
 298     return bfd_reloc_ok;
 299   }
 300   return bfd_reloc_continue;
 301
 302 }
 303 /* type rshift size  bitsize    pcrel   bitpos  absolute overflow check*/
 304
 305
 306 static reloc_howto_type howto_reloc_callj =
 307 HOWTO( 3, 0, 2, 24, true, 0, true, true, callj_callback,"callj", true, 0x00ffffff, 0x00ffffff,false);
 308 static  reloc_howto_type howto_reloc_abs32 =
 309 HOWTO(1, 0, 2, 32, false, 0, true, true,0,"abs32", true, 0xffffffff,0xffffffff,false);
 310 static reloc_howto_type howto_reloc_pcrel24 =
 311 HOWTO(2, 0, 2, 24, true, 0, true, true,0,"pcrel24", true, 0x00ffffff,0x00ffffff,false);
 312
 313 /* Allocate enough room for all the reloc entries, plus pointers to them all */
 314
 315 static boolean
 316 b_out_slurp_reloc_table (abfd, asect, symbols)
 317      bfd *abfd;
 318      sec_ptr asect;
 319      asymbol **symbols;
 320 {
 321   unsigned int count;
 322   size_t  reloc_size;
 323   struct relocation_info *relocs;
 324   arelent *reloc_cache;
 325
 326   if (asect->relocation) return true;
 327   if (!aout_32_slurp_symbol_table (abfd)) return false;
 328
 329   if (asect == obj_datasec (abfd)) {
 330     reloc_size = exec_hdr(abfd)->a_drsize;
 331     goto doit;
 332   }
 333
 334   if (asect == obj_textsec (abfd)) {
 335     reloc_size = exec_hdr(abfd)->a_trsize;
 336     goto doit;
 337   }
 338
 339   bfd_error = invalid_operation;
 340   return false;
 341
 342  doit:
 343   bfd_seek (abfd, (long)(asect->rel_filepos), SEEK_SET);
 344   count = reloc_size / sizeof (struct relocation_info);
 345
 346   relocs = (struct relocation_info *) malloc (reloc_size);
 347   if (!relocs) {
 348     bfd_error = no_memory;
 349     return false;
 350   }
 351   reloc_cache = (arelent *) malloc ((count+1) * sizeof (arelent));
 352   if (!reloc_cache) {
 353     free ((char*)relocs);
 354     bfd_error = no_memory;
 355     return false;
 356   }
 357
 358   if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
 359     bfd_error = system_call_error;
 360     free (reloc_cache);
 361     free (relocs);
 362     return false;
 363   }
 364
 365   {
 366     register struct relocation_info *rptr = relocs;
 367     unsigned int counter = 0;
 368     arelent *cache_ptr = reloc_cache;
 369     int extern_mask, pcrel_mask, callj_mask;
 370
 371     if (abfd->xvec->header_byteorder_big_p) {
 372       /* Big-endian bit field allocation order */
 373       pcrel_mask  = 0x80;
 374       extern_mask = 0x10;
 375       callj_mask  = 0x02;
 376     } else {
 377       /* Little-endian bit field allocation order */
 378       pcrel_mask  = 0x01;
 379       extern_mask = 0x08;
 380       callj_mask  = 0x40;
 381     }
 382
 383     for (; counter < count; counter++, rptr++, cache_ptr++)
 384       {
 385         unsigned char *raw = (unsigned char *)rptr;
 386         unsigned int symnum;
 387         cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
 388         if (abfd->xvec->header_byteorder_big_p) {
 389           symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
 390         } else {
 391           symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
 392         }
 393
 394         if (raw[7] & extern_mask) {
 395           /* If this is set then the r_index is a index into the symbol table;
 396            * if the bit is not set then r_index contains a section map.
 397            * We either fill in the sym entry with a pointer to the symbol,
 398            * or point to the correct section
 399            */
 400           cache_ptr->sym_ptr_ptr = symbols + symnum;
 401           cache_ptr->addend = 0;
 402           cache_ptr->section = (asection*)NULL;
 403         } else {
 404           /* In a.out symbols are relative to the beginning of the
 405            * file rather than sections ?
 406            * (look in translate_from_native_sym_flags)
 407            * The reloc entry addend has added to it the offset into the
 408            * file of the data, so subtract the base to make the reloc
 409            * section relative */
 410           cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
 411           switch (symnum) {
 412           case N_TEXT:
 413           case N_TEXT | N_EXT:
 414             cache_ptr->section = obj_textsec(abfd);
 415             cache_ptr->addend = -obj_textsec(abfd)->vma;
 416             break;
 417           case N_DATA:
 418           case N_DATA | N_EXT:
 419             cache_ptr->section = obj_datasec(abfd);
 420             cache_ptr->addend = - obj_datasec(abfd)->vma;
 421             break;
 422           case N_BSS:
 423           case N_BSS | N_EXT:
 424             cache_ptr->section = obj_bsssec(abfd);
 425             cache_ptr->addend =  - obj_bsssec(abfd)->vma;
 426             break;
 427           case N_ABS:
 428           case N_ABS | N_EXT:
 429             BFD_ASSERT(0);
 430             break;
 431           default:
 432             BFD_ASSERT(0);
 433             break;
 434           }
 435
 436         }
 437
 438         /* The i960 only has a few relocation types:
 439            abs 32-bit and pcrel 24bit.   Except for callj's!  */
 440         if (raw[7] & callj_mask)
 441           cache_ptr->howto = &howto_reloc_callj;
 442         else if ( raw[7] & pcrel_mask)
 443           cache_ptr->howto = &howto_reloc_pcrel24;
 444         else
 445           cache_ptr->howto = &howto_reloc_abs32;
 446       }
 447   }
 448
 449   free (relocs);
 450   asect->relocation = reloc_cache;
 451   asect->reloc_count = count;
 452   return true;
 453 }
 454
 455
 456 static boolean
 457 b_out_squirt_out_relocs (abfd, section)
 458      bfd *abfd;
 459      asection *section;
 460 {
 461   arelent **generic;
 462
 463   unsigned int count = section->reloc_count;
 464   struct relocation_info *native, *natptr;
 465   size_t natsize = count * sizeof (struct relocation_info);
 466   int extern_mask, pcrel_mask,  len_2, callj_mask;
 467   if (count == 0) return true;
 468   generic   = section->orelocation;
 469   native = ((struct relocation_info *) malloc (natsize));
 470   if (!native) {
 471     bfd_error = no_memory;
 472     return false;
 473   }
 474
 475    if (abfd->xvec->header_byteorder_big_p) {
 476        /* Big-endian bit field allocation order */
 477        pcrel_mask  = 0x80;
 478        extern_mask = 0x10;
 479        len_2       = 0x40;
 480       callj_mask  = 0x02;
 481    } else {
 482        /* Little-endian bit field allocation order */
 483        pcrel_mask  = 0x01;
 484        extern_mask = 0x08;
 485        len_2       = 0x04;
 486       callj_mask  = 0x40;
 487    }
 488
 489   for (natptr = native; count > 0; --count, ++natptr, ++generic)
 490     {
 491       arelent *g = *generic;
 492       unsigned char *raw = (unsigned char *)natptr;
 493       unsigned int symnum;
 494
 495       bfd_h_put_32(abfd, g->address, raw);
 496       /* Find a type in the output format which matches the input howto -
 497        * at the moment we assume input format == output format FIXME!!
 498        */
 499       /* FIXME:  Need callj stuff here, and to check the howto entries to
 500          be sure they are real for this architecture.  */
 501       if (g->howto== &howto_reloc_callj) {
 502         raw[7] = callj_mask + pcrel_mask + len_2;
 503       }
 504       else if (g->howto == &howto_reloc_pcrel24) {
 505         raw[7] = pcrel_mask +len_2;
 506       }
 507       else {
 508         raw[7] = len_2;
 509       }
 510       if (g->sym_ptr_ptr != (asymbol **)NULL)
 511         {
 512           /* name clobbered by aout_write_syms to be symbol index*/
 513           if ((*(g->sym_ptr_ptr))->section) {
 514             /* replace the section offset into the addent */
 515             g->addend += (*(g->sym_ptr_ptr))->section->vma ;
 516           }
 517           symnum = stoi((*(g->sym_ptr_ptr))->name);
 518           raw[7] |= extern_mask;
 519           BFD_ASSERT(g->addend == 0);
 520         }
 521       else {
 522         if (g->section == (asection *)NULL) {
 523           symnum = N_ABS;
 524           BFD_ASSERT(0);
 525         }
 526         else  if(g->section->output_section == obj_textsec(abfd)) {
 527           symnum = N_TEXT;
 528           BFD_ASSERT(g->addend + obj_textsec(abfd)->vma == 0);
 529
 530         }
 531         else if (g->section->output_section == obj_datasec(abfd)) {
 532           symnum  = N_DATA;
 533           BFD_ASSERT(g->addend + obj_datasec(abfd)->vma == 0);
 534
 535         }
 536         else if (g->section->output_section == obj_bsssec(abfd)) {
 537           symnum = N_BSS;
 538           BFD_ASSERT(g->addend + obj_bsssec(abfd)->vma == 0);
 539
 540
 541         }
 542         else {
 543           BFD_ASSERT(0);
 544         }
 545       }
 546       if (abfd->xvec->header_byteorder_big_p) {
 547         raw[4] = (unsigned char) (symnum >> 16);
 548         raw[5] = (unsigned char) (symnum >>  8);
 549         raw[6] = (unsigned char) (symnum      );
 550       } else {
 551         raw[6] = (unsigned char) (symnum >> 16);
 552         raw[5] = (unsigned char) (symnum >>  8);
 553         raw[4] = (unsigned char) (symnum      );
 554       }
 555     }
 556
 557   if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
 558     free((PTR)native);
 559     return false;
 560   }
 561   free ((PTR)native);
 562
 563   return true;
 564 }
 565
 566 /* This is stupid.  This function should be a boolean predicate */
 567 static unsigned int
 568 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
 569      bfd *abfd;
 570      sec_ptr section;
 571      arelent **relptr;
 572      asymbol **symbols;
 573 {
 574   arelent *tblptr = section->relocation;
 575   unsigned int count = 0;
 576
 577  if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
 578   tblptr = section->relocation;
 579  if (!tblptr) return 0;
 580
 581   for (; count++ < section->reloc_count;)
 582     *relptr++ = tblptr++;
 583
 584   *relptr = 0;
 585
 586   return section->reloc_count;
 587 }
 588
 589 static unsigned int
 590 b_out_get_reloc_upper_bound (abfd, asect)
 591      bfd *abfd;
 592      sec_ptr asect;
 593 {
 594   if (bfd_get_format (abfd) != bfd_object) {
 595     bfd_error = invalid_operation;
 596     return 0;
 597   }
 598
 599   if (asect == obj_datasec (abfd))
 600     return (sizeof (arelent *) *
 601             ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
 602              +1));
 603
 604   if (asect == obj_textsec (abfd))
 605     return (sizeof (arelent *) *
 606             ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
 607              +1));
 608
 609   bfd_error = invalid_operation;
 610   return 0;
 611 }
 612 \f
 613 static boolean
 614 b_out_set_section_contents (abfd, section, location, offset, count)
 615      bfd *abfd;
 616      sec_ptr section;
 617      unsigned char *location;
 618      file_ptr offset;
 619       int count;
 620 {
 621   if (abfd->output_has_begun == false) { /* set by bfd.c handler */
 622     if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
 623         (obj_textsec (abfd)->size == 0) || (obj_datasec (abfd)->size == 0)*/) {
 624       bfd_error = invalid_operation;
 625       return false;
 626     }
 627
 628     obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
 629     obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
 630                                 +  obj_textsec (abfd)->size;
 631
 632   }
 633   /* regardless, once we know what we're doing, we might as well get going */
 634   bfd_seek (abfd, section->filepos + offset, SEEK_SET);
 635
 636   if (count != 0) {
 637     return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
 638   }
 639   return false;
 640 }
 641
 642 static boolean
 643 b_out_set_arch_mach (abfd, arch, machine)
 644      bfd *abfd;
 645      enum bfd_architecture arch;
 646      unsigned long machine;
 647 {
 648   abfd->obj_arch = arch;
 649   abfd->obj_machine = machine;
 650   if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
 651     return true;
 652   if (arch == bfd_arch_i960)    /* i960 default is OK */
 653     switch (machine) {
 654     case bfd_mach_i960_core:
 655     case bfd_mach_i960_kb_sb:
 656     case bfd_mach_i960_mc:
 657     case bfd_mach_i960_xa:
 658     case bfd_mach_i960_ca:
 659     case bfd_mach_i960_ka_sa:
 660     case 0:
 661       return true;
 662     default:
 663       return false;
 664     }
 665
 666   return false;
 667 }
 668
 669 static int
 670 DEFUN(b_out_sizeof_headers,(abfd, exec),
 671       bfd *abfd AND
 672       boolean exec)
 673 {
 674   return sizeof(struct internal_exec);
 675 }
 676
 677
 678 \f
 679
 680
 681
 682
 683 /* Build the transfer vectors for Big and Little-Endian B.OUT files.  */
 684
 685 /* We don't have core files.  */
 686 #define aout_32_core_file_failing_command       _bfd_dummy_core_file_failing_command
 687 #define aout_32_core_file_failing_signal        _bfd_dummy_core_file_failing_signal
 688 #define aout_32_core_file_matches_executable_p  \
 689                                 _bfd_dummy_core_file_matches_executable_p
 690
 691 /* We use BSD-Unix generic archive files.  */
 692 #define aout_32_openr_next_archived_file        bfd_generic_openr_next_archived_file
 693 #define aout_32_generic_stat_arch_elt   bfd_generic_stat_arch_elt
 694 #define aout_32_slurp_armap             bfd_slurp_bsd_armap
 695 #define aout_32_slurp_extended_name_table       bfd_true
 696 #define aout_32_write_armap             bsd_write_armap
 697 #define aout_32_truncate_arname         bfd_bsd_truncate_arname
 698
 699 /* We override these routines from the usual a.out file routines.  */
 700 #define aout_32_canonicalize_reloc              b_out_canonicalize_reloc
 701 #define aout_32_get_reloc_upper_bound   b_out_get_reloc_upper_bound
 702 #define aout_32_set_section_contents    b_out_set_section_contents
 703 #define aout_32_set_arch_mach           b_out_set_arch_mach
 704 #define aout_32_sizeof_headers          b_out_sizeof_headers
 705
 706 #define aout_32_bfd_debug_info_start            bfd_void
 707 #define aout_32_bfd_debug_info_end              bfd_void
 708 #define aout_32_bfd_debug_info_accumulate       (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
 709
 710
 711 bfd_target b_out_vec_big_host =
 712 {
 713   "b.out.big",                  /* name */
 714   bfd_target_aout_flavour_enum,
 715   false,                        /* data byte order is little */
 716   true,                         /* hdr byte order is big */
 717   (HAS_RELOC | EXEC_P |         /* object flags */
 718    HAS_LINENO | HAS_DEBUG |
 719    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 720   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 721   ' ',                          /* ar_pad_char */
 722   16,                           /* ar_max_namelen */
 723      2,                         /* minumum alignment power */
 724
 725 _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 726 _do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
 727     {_bfd_dummy_target, b_out_big_object_p, /* bfd_check_format */
 728        bfd_generic_archive_p, _bfd_dummy_target},
 729     {bfd_false, b_out_mkobject, /* bfd_set_format */
 730        _bfd_generic_mkarchive, bfd_false},
 731     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 732        _bfd_write_archive_contents, bfd_false},
 733
 734   JUMP_TABLE(aout_32)
 735 };
 736
 737
 738 bfd_target b_out_vec_little_host =
 739 {
 740   "b.out.little",               /* name */
 741   bfd_target_aout_flavour_enum,
 742   false,                        /* data byte order is little */
 743   false,                        /* header byte order is little */
 744   (HAS_RELOC | EXEC_P |         /* object flags */
 745    HAS_LINENO | HAS_DEBUG |
 746    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 747   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 748   ' ',                          /* ar_pad_char */
 749   16,                           /* ar_max_namelen */
 750      2,                         /* minum align */
 751 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 752 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
 753
 754     {_bfd_dummy_target, b_out_little_object_p, /* bfd_check_format */
 755        bfd_generic_archive_p, _bfd_dummy_target},
 756     {bfd_false, b_out_mkobject, /* bfd_set_format */
 757        _bfd_generic_mkarchive, bfd_false},
 758     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 759        _bfd_write_archive_contents, bfd_false},
 760   JUMP_TABLE(aout_32)
 761 };
 762