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