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   bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
 157   obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
 158
 159   /* The file positions of the sections */
 160   obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
 161   obj_datasec (abfd)->filepos = N_DATOFF(*execp);
 162
 163   /* The file positions of the relocation info */
 164   obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
 165   obj_datasec (abfd)->rel_filepos =  N_DROFF(*execp);
 166
 167   adata(abfd)->page_size = 1; /* Not applicable. */
 168   adata(abfd)->segment_size = 1; /* Not applicable. */
 169   adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
 170
 171   return abfd->xvec;
 172 }
 173
 174 struct container {
 175     struct aoutdata a;
 176     struct internal_exec e;
 177 };
 178
 179 static boolean
 180 b_out_mkobject (abfd)
 181      bfd *abfd;
 182 {
 183   struct container *rawptr;
 184
 185   rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container));
 186   if (rawptr == NULL) {
 187     bfd_error = no_memory;
 188     return false;
 189   }
 190
 191   set_tdata (abfd, &rawptr->a);
 192   exec_hdr (abfd) = &rawptr->e;
 193
 194   /* For simplicity's sake we just make all the sections right here. */
 195   obj_textsec (abfd) = (asection *)NULL;
 196   obj_datasec (abfd) = (asection *)NULL;
 197   obj_bsssec (abfd) = (asection *)NULL;
 198
 199   bfd_make_section (abfd, ".text");
 200   bfd_make_section (abfd, ".data");
 201   bfd_make_section (abfd, ".bss");
 202
 203   return true;
 204 }
 205
 206 static boolean
 207 b_out_write_object_contents (abfd)
 208      bfd *abfd;
 209 {
 210   struct external_exec swapped_hdr;
 211
 212   exec_hdr (abfd)->a_info = BMAGIC;
 213
 214   exec_hdr (abfd)->a_text = obj_textsec (abfd)->size;
 215   exec_hdr (abfd)->a_data = obj_datasec (abfd)->size;
 216   exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->size;
 217   exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
 218   exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
 219   exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
 220                                sizeof (struct relocation_info));
 221   exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
 222                                sizeof (struct relocation_info));
 223
 224   exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
 225   exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
 226   exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
 227
 228   exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
 229   exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
 230
 231   bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
 232
 233   bfd_seek (abfd, 0L, SEEK_SET);
 234   bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd);
 235
 236   /* Now write out reloc info, followed by syms and strings */
 237   if (bfd_get_symcount (abfd) != 0)
 238     {
 239       bfd_seek (abfd,
 240                 (long)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET);
 241
 242       aout_32_write_syms (abfd);
 243
 244       bfd_seek (abfd,   (long)(N_TROFF(*exec_hdr(abfd))), SEEK_SET);
 245
 246       if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
 247       bfd_seek (abfd, (long)(N_DROFF(*exec_hdr(abfd))), SEEK_SET);
 248
 249       if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
 250     }
 251   return true;
 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_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 *) bfd_xmalloc (reloc_size);
 347   if (!relocs) {
 348     bfd_error = no_memory;
 349     return false;
 350   }
 351   reloc_cache = (arelent *) bfd_xmalloc ((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 *) bfd_xmalloc (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         else if (g->section->output_section == obj_datasec(abfd)) {
 531           symnum  = N_DATA;
 532           BFD_ASSERT(g->addend + obj_datasec(abfd)->vma == 0);
 533         }
 534         else if (g->section->output_section == obj_bsssec(abfd)) {
 535           symnum = N_BSS;
 536           BFD_ASSERT(g->addend + obj_bsssec(abfd)->vma == 0);
 537         }
 538         else {
 539           BFD_ASSERT(0);
 540           symnum = N_ABS;
 541         }
 542       }
 543       if (abfd->xvec->header_byteorder_big_p) {
 544         raw[4] = (unsigned char) (symnum >> 16);
 545         raw[5] = (unsigned char) (symnum >>  8);
 546         raw[6] = (unsigned char) (symnum      );
 547       } else {
 548         raw[6] = (unsigned char) (symnum >> 16);
 549         raw[5] = (unsigned char) (symnum >>  8);
 550         raw[4] = (unsigned char) (symnum      );
 551       }
 552     }
 553
 554   if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
 555     free((PTR)native);
 556     return false;
 557   }
 558   free ((PTR)native);
 559
 560   return true;
 561 }
 562
 563 /* This is stupid.  This function should be a boolean predicate */
 564 static unsigned int
 565 b_out_canonicalize_reloc (abfd, section, relptr, symbols)
 566      bfd *abfd;
 567      sec_ptr section;
 568      arelent **relptr;
 569      asymbol **symbols;
 570 {
 571   arelent *tblptr = section->relocation;
 572   unsigned int count = 0;
 573
 574  if (!(tblptr || b_out_slurp_reloc_table (abfd, section, symbols))) return 0;
 575   tblptr = section->relocation;
 576  if (!tblptr) return 0;
 577
 578   for (; count++ < section->reloc_count;)
 579     *relptr++ = tblptr++;
 580
 581   *relptr = 0;
 582
 583   return section->reloc_count;
 584 }
 585
 586 static unsigned int
 587 b_out_get_reloc_upper_bound (abfd, asect)
 588      bfd *abfd;
 589      sec_ptr asect;
 590 {
 591   if (bfd_get_format (abfd) != bfd_object) {
 592     bfd_error = invalid_operation;
 593     return 0;
 594   }
 595
 596   if (asect == obj_datasec (abfd))
 597     return (sizeof (arelent *) *
 598             ((exec_hdr(abfd)->a_drsize / sizeof (struct relocation_info))
 599              +1));
 600
 601   if (asect == obj_textsec (abfd))
 602     return (sizeof (arelent *) *
 603             ((exec_hdr(abfd)->a_trsize / sizeof (struct relocation_info))
 604              +1));
 605
 606   bfd_error = invalid_operation;
 607   return 0;
 608 }
 609 \f
 610 static boolean
 611 b_out_set_section_contents (abfd, section, location, offset, count)
 612      bfd *abfd;
 613      sec_ptr section;
 614      unsigned char *location;
 615      file_ptr offset;
 616       int count;
 617 {
 618   if (abfd->output_has_begun == false) { /* set by bfd.c handler */
 619     if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL) /*||
 620         (obj_textsec (abfd)->size == 0) || (obj_datasec (abfd)->size == 0)*/) {
 621       bfd_error = invalid_operation;
 622       return false;
 623     }
 624
 625     obj_textsec (abfd)->filepos = sizeof(struct internal_exec);
 626     obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
 627                                 +  obj_textsec (abfd)->size;
 628
 629   }
 630   /* regardless, once we know what we're doing, we might as well get going */
 631   bfd_seek (abfd, section->filepos + offset, SEEK_SET);
 632
 633   if (count != 0) {
 634     return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
 635   }
 636   return false;
 637 }
 638
 639 static boolean
 640 b_out_set_arch_mach (abfd, arch, machine)
 641      bfd *abfd;
 642      enum bfd_architecture arch;
 643      unsigned long machine;
 644 {
 645   bfd_default_set_arch_mach(abfd, arch, machine);
 646
 647   if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
 648     return true;
 649   if (arch == bfd_arch_i960)    /* i960 default is OK */
 650     switch (machine) {
 651     case bfd_mach_i960_core:
 652     case bfd_mach_i960_kb_sb:
 653     case bfd_mach_i960_mc:
 654     case bfd_mach_i960_xa:
 655     case bfd_mach_i960_ca:
 656     case bfd_mach_i960_ka_sa:
 657     case 0:
 658       return true;
 659     default:
 660       return false;
 661     }
 662
 663   return false;
 664 }
 665
 666 static int
 667 DEFUN(b_out_sizeof_headers,(ignore_abfd, ignore),
 668       bfd *ignore_abfd AND
 669       boolean ignore)
 670 {
 671   return sizeof(struct internal_exec);
 672 }
 673
 674
 675
 676
 677 /* Build the transfer vectors for Big and Little-Endian B.OUT files.  */
 678
 679 /* We don't have core files.  */
 680 #define aout_32_core_file_failing_command _bfd_dummy_core_file_failing_command
 681 #define aout_32_core_file_failing_signal _bfd_dummy_core_file_failing_signal
 682 #define aout_32_core_file_matches_executable_p  \
 683                                 _bfd_dummy_core_file_matches_executable_p
 684
 685 /* We use BSD-Unix generic archive files.  */
 686 #define aout_32_openr_next_archived_file        bfd_generic_openr_next_archived_file
 687 #define aout_32_generic_stat_arch_elt   bfd_generic_stat_arch_elt
 688 #define aout_32_slurp_armap             bfd_slurp_bsd_armap
 689 #define aout_32_slurp_extended_name_table       bfd_true
 690 #define aout_32_write_armap             bsd_write_armap
 691 #define aout_32_truncate_arname         bfd_bsd_truncate_arname
 692
 693 /* We override these routines from the usual a.out file routines.  */
 694 #define aout_32_canonicalize_reloc      b_out_canonicalize_reloc
 695 #define aout_32_get_reloc_upper_bound   b_out_get_reloc_upper_bound
 696 #define aout_32_set_section_contents    b_out_set_section_contents
 697 #define aout_32_set_arch_mach           b_out_set_arch_mach
 698 #define aout_32_sizeof_headers          b_out_sizeof_headers
 699
 700 #define aout_32_bfd_debug_info_start            bfd_void
 701 #define aout_32_bfd_debug_info_end              bfd_void
 702 #define aout_32_bfd_debug_info_accumulate       (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
 703
 704
 705 bfd_target b_out_vec_big_host =
 706 {
 707   "b.out.big",                  /* name */
 708   bfd_target_aout_flavour,
 709   false,                        /* data byte order is little */
 710   true,                         /* hdr byte order is big */
 711   (HAS_RELOC | EXEC_P |         /* object flags */
 712    HAS_LINENO | HAS_DEBUG |
 713    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 714   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 715   ' ',                          /* ar_pad_char */
 716   16,                           /* ar_max_namelen */
 717      2,                         /* minumum alignment power */
 718
 719 _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 720 _do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
 721     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 722        bfd_generic_archive_p, _bfd_dummy_target},
 723     {bfd_false, b_out_mkobject, /* bfd_set_format */
 724        _bfd_generic_mkarchive, bfd_false},
 725     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 726        _bfd_write_archive_contents, bfd_false},
 727
 728   JUMP_TABLE(aout_32)
 729 };
 730
 731
 732 bfd_target b_out_vec_little_host =
 733 {
 734   "b.out.little",               /* name */
 735   bfd_target_aout_flavour,
 736   false,                        /* data byte order is little */
 737   false,                        /* header byte order is little */
 738   (HAS_RELOC | EXEC_P |         /* object flags */
 739    HAS_LINENO | HAS_DEBUG |
 740    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT ),
 741   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 742   ' ',                          /* ar_pad_char */
 743   16,                           /* ar_max_namelen */
 744      2,                         /* minum align */
 745 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 746 _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
 747
 748     {_bfd_dummy_target, b_out_object_p, /* bfd_check_format */
 749        bfd_generic_archive_p, _bfd_dummy_target},
 750     {bfd_false, b_out_mkobject, /* bfd_set_format */
 751        _bfd_generic_mkarchive, bfd_false},
 752     {bfd_false, b_out_write_object_contents,    /* bfd_write_contents */
 753        _bfd_write_archive_contents, bfd_false},
 754   JUMP_TABLE(aout_32)
 755 };