bfd/aout-tic30.c

   1 /* BFD back-end for TMS320C30 a.out binaries.
   2    Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   3    Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
   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., 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 #define TARGET_IS_BIG_ENDIAN_P
  23 #define N_HEADER_IN_TEXT(x) 1
  24 #define BYTES_IN_WORD 4
  25 #define TEXT_START_ADDR 1024
  26 #define TARGET_PAGE_SIZE 128
  27 #define SEGMENT_SIZE TARGET_PAGE_SIZE
  28 #define DEFAULT_ARCH bfd_arch_tic30
  29 #define ARCH_SIZE 32
  30
  31 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  32    remove whitespace added here, and thus will fail to concatenate
  33    the tokens.  */
  34 #define MY(OP) CONCAT2 (tic30_aout_,OP)
  35 #define TARGETNAME "a.out-tic30"
  36 #define NAME(x,y) CONCAT3 (tic30_aout,_32_,y)
  37
  38 #include "bfd.h"
  39 #include "sysdep.h"
  40 #include "libaout.h"
  41
  42 #include "aout/aout64.h"
  43 #include "aout/stab_gnu.h"
  44 #include "aout/ar.h"
  45
  46 static bfd_reloc_status_type tic30_aout_fix_16
  47   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  48 static bfd_reloc_status_type tic30_aout_fix_32
  49   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  50 static bfd_reloc_status_type tic30_aout_fix_pcrel_16
  51   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  52 static reloc_howto_type *tic30_aout_reloc_howto
  53   PARAMS ((bfd *, struct reloc_std_external *, int *, int *, int *));
  54 static bfd_reloc_status_type tic30_aout_relocate_contents
  55   PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
  56 static bfd_reloc_status_type tic30_aout_final_link_relocate
  57   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma,
  58            bfd_vma, bfd_vma));
  59 static const bfd_target *tic30_aout_object_p PARAMS ((bfd *));
  60 static boolean tic30_aout_write_object_contents PARAMS ((bfd *));
  61 static boolean tic30_aout_set_sizes PARAMS ((bfd *));
  62 static const bfd_target * tic30_aout_callback PARAMS ((bfd *));
  63 static boolean MY_bfd_copy_private_section_data
  64   PARAMS ((bfd *, asection *, bfd *, asection *));
  65 static boolean MY_bfd_final_link PARAMS ((bfd *, struct bfd_link_info *));
  66 reloc_howto_type * tic30_aout_reloc_type_lookup
  67   PARAMS ((bfd *, bfd_reloc_code_real_type));
  68 enum machine_type tic30_aout_machine_type
  69   PARAMS ((enum bfd_architecture, unsigned long, boolean *));
  70 boolean tic30_aout_set_arch_mach
  71   PARAMS ((bfd *, enum bfd_architecture, unsigned long));
  72
  73 #define MY_reloc_howto(BFD, REL, IN, EX, PC) \
  74   tic30_aout_reloc_howto(BFD, REL, &IN, &EX, &PC)
  75 #define MY_final_link_relocate tic30_aout_final_link_relocate
  76 #define MY_object_p tic30_aout_object_p
  77 #define MY_mkobject NAME(aout,mkobject)
  78 #define MY_write_object_contents tic30_aout_write_object_contents
  79 #define MY_set_sizes tic30_aout_set_sizes
  80
  81 #ifndef MY_exec_hdr_flags
  82 #define MY_exec_hdr_flags 1
  83 #endif
  84
  85 #ifndef MY_backend_data
  86
  87 #ifndef MY_zmagic_contiguous
  88 #define MY_zmagic_contiguous 0
  89 #endif
  90 #ifndef MY_text_includes_header
  91 #define MY_text_includes_header 0
  92 #endif
  93 #ifndef MY_entry_is_text_address
  94 #define MY_entry_is_text_address 0
  95 #endif
  96 #ifndef MY_exec_header_not_counted
  97 #define MY_exec_header_not_counted 1
  98 #endif
  99 #ifndef MY_add_dynamic_symbols
 100 #define MY_add_dynamic_symbols 0
 101 #endif
 102 #ifndef MY_add_one_symbol
 103 #define MY_add_one_symbol 0
 104 #endif
 105 #ifndef MY_link_dynamic_object
 106 #define MY_link_dynamic_object 0
 107 #endif
 108 #ifndef MY_write_dynamic_symbol
 109 #define MY_write_dynamic_symbol 0
 110 #endif
 111 #ifndef MY_check_dynamic_reloc
 112 #define MY_check_dynamic_reloc 0
 113 #endif
 114 #ifndef MY_finish_dynamic_link
 115 #define MY_finish_dynamic_link 0
 116 #endif
 117
 118 static const struct aout_backend_data tic30_aout_backend_data =
 119 {
 120   MY_zmagic_contiguous,
 121   MY_text_includes_header,
 122   MY_entry_is_text_address,
 123   MY_exec_hdr_flags,
 124   0,                            /* text vma? */
 125   MY_set_sizes,
 126   MY_exec_header_not_counted,
 127   MY_add_dynamic_symbols,
 128   MY_add_one_symbol,
 129   MY_link_dynamic_object,
 130   MY_write_dynamic_symbol,
 131   MY_check_dynamic_reloc,
 132   MY_finish_dynamic_link
 133 };
 134 #define MY_backend_data &tic30_aout_backend_data
 135 #endif
 136
 137 /* FIXME: This is wrong.  aoutx.h should really only be included by
 138    aout32.c.  */
 139
 140 #include "aoutx.h"
 141
 142 /* This table lists the relocation types for the TMS320C30.  There are
 143    only a few relocations required, and all must be divided by 4 (>>
 144    2) to get the 32-bit addresses in the format the TMS320C30 likes
 145    it.  */
 146 reloc_howto_type tic30_aout_howto_table[] =
 147   {
 148     EMPTY_HOWTO (-1),
 149     HOWTO (1, 2, 1, 16, false, 0, 0, tic30_aout_fix_16,
 150            "16", false, 0x0000FFFF, 0x0000FFFF, false),
 151     HOWTO (2, 2, 2, 24, false, 0, complain_overflow_bitfield, NULL,
 152            "24", false, 0x00FFFFFF, 0x00FFFFFF, false),
 153     HOWTO (3, 18, 3, 24, false, 0, complain_overflow_bitfield, NULL,
 154            "LDP", false, 0x00FF0000, 0x000000FF, false),
 155     HOWTO (4, 2, 4, 32, false, 0, complain_overflow_bitfield, tic30_aout_fix_32,
 156            "32", false, 0xFFFFFFFF, 0xFFFFFFFF, false),
 157     HOWTO (5, 2, 1, 16, true, 0, complain_overflow_signed,
 158            tic30_aout_fix_pcrel_16, "PCREL", true, 0x0000FFFF, 0x0000FFFF, true),
 159     EMPTY_HOWTO (-1),
 160     EMPTY_HOWTO (-1),
 161     EMPTY_HOWTO (-1),
 162     EMPTY_HOWTO (-1),
 163     EMPTY_HOWTO (-1)
 164   };
 165
 166 extern reloc_howto_type *NAME (aout, reloc_type_lookup)
 167      PARAMS ((bfd *, bfd_reloc_code_real_type));
 168
 169 reloc_howto_type *
 170 tic30_aout_reloc_type_lookup (abfd, code)
 171      bfd *abfd ATTRIBUTE_UNUSED;
 172      bfd_reloc_code_real_type code;
 173 {
 174   switch (code)
 175     {
 176     case BFD_RELOC_8:
 177     case BFD_RELOC_TIC30_LDP:
 178       return &tic30_aout_howto_table[3];
 179     case BFD_RELOC_16:
 180       return &tic30_aout_howto_table[1];
 181     case BFD_RELOC_24:
 182       return &tic30_aout_howto_table[2];
 183     case BFD_RELOC_16_PCREL:
 184       return &tic30_aout_howto_table[5];
 185     case BFD_RELOC_32:
 186       return &tic30_aout_howto_table[4];
 187     default:
 188       return (reloc_howto_type *) NULL;
 189     }
 190 }
 191
 192 static reloc_howto_type *
 193 tic30_aout_reloc_howto (abfd, relocs, r_index, r_extern, r_pcrel)
 194      bfd *abfd;
 195      struct reloc_std_external *relocs;
 196      int *r_index;
 197      int *r_extern;
 198      int *r_pcrel;
 199 {
 200   unsigned int r_length;
 201   unsigned int r_pcrel_done;
 202   int index;
 203
 204   *r_pcrel = 0;
 205   if (bfd_header_big_endian (abfd))
 206     {
 207       *r_index = ((relocs->r_index[0] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[2]);
 208       *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
 209       r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
 210       r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) >> RELOC_STD_BITS_LENGTH_SH_BIG);
 211     }
 212   else
 213     {
 214       *r_index = ((relocs->r_index[2] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[0]);
 215       *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
 216       r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
 217       r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
 218     }
 219   index = r_length + 4 * r_pcrel_done;
 220   return tic30_aout_howto_table + index;
 221 }
 222
 223 /* This function is used as a callback for 16-bit relocs.  This is
 224    required for relocations between segments.  A line in aoutx.h
 225    requires that any relocations for the data section should point to
 226    the end of the aligned text section, plus an offset.  By default,
 227    this does not happen, therefore this function takes care of
 228    that.  */
 229
 230 static bfd_reloc_status_type
 231 tic30_aout_fix_16 (abfd, reloc_entry, symbol, data, input_section, output_bfd, error_message)
 232      bfd *abfd;
 233      arelent *reloc_entry;
 234      asymbol *symbol;
 235      PTR data;
 236      asection *input_section ATTRIBUTE_UNUSED;
 237      bfd *output_bfd;
 238      char **error_message ATTRIBUTE_UNUSED;
 239 {
 240   bfd_vma relocation;
 241
 242   /* Make sure that the symbol's section is defined.  */
 243   if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
 244     return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
 245   /* Get the size of the input section and turn it into the TMS320C30
 246      32-bit address format.  */
 247   relocation = (symbol->section->vma >> 2);
 248   relocation += bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
 249   bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
 250   return bfd_reloc_ok;
 251 }
 252
 253 /* This function does the same thing as tic30_aout_fix_16 except for 32
 254    bit relocations.  */
 255
 256 static bfd_reloc_status_type
 257 tic30_aout_fix_32 (abfd, reloc_entry, symbol, data, input_section,
 258                    output_bfd, error_message)
 259      bfd *abfd;
 260      arelent *reloc_entry;
 261      asymbol *symbol;
 262      PTR data;
 263      asection *input_section ATTRIBUTE_UNUSED;
 264      bfd *output_bfd;
 265      char **error_message ATTRIBUTE_UNUSED;
 266 {
 267   bfd_vma relocation;
 268
 269   /* Make sure that the symbol's section is defined.  */
 270   if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
 271     return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
 272   /* Get the size of the input section and turn it into the TMS320C30
 273      32-bit address format.  */
 274   relocation = (symbol->section->vma >> 2);
 275   relocation += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
 276   bfd_put_32 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
 277   return bfd_reloc_ok;
 278 }
 279
 280 /* This function is used to work out pc-relative offsets for the
 281    TMS320C30.  The data already placed by md_pcrel_from within gas is
 282    useless for a relocation, so we just get the offset value and place
 283    a version of this within the object code.
 284    tic30_aout_final_link_relocate will then calculate the required
 285    relocation to add on to the value in the object code.  */
 286
 287 static bfd_reloc_status_type
 288 tic30_aout_fix_pcrel_16 (abfd, reloc_entry, symbol, data, input_section,
 289                          output_bfd, error_message)
 290      bfd *abfd;
 291      arelent *reloc_entry;
 292      asymbol *symbol ATTRIBUTE_UNUSED;
 293      PTR data;
 294      asection *input_section ATTRIBUTE_UNUSED;
 295      bfd *output_bfd ATTRIBUTE_UNUSED;
 296      char **error_message ATTRIBUTE_UNUSED;
 297 {
 298   bfd_vma relocation = 1;
 299   bfd_byte offset_data = bfd_get_8 (abfd, (bfd_byte *) data + reloc_entry->address - 1);
 300
 301   /* The byte before the location of the fix contains bits 23-16 of
 302      the pcrel instruction.  Bit 21 is set for a delayed instruction
 303      which requires on offset of 3 instead of 1.  */
 304   if (offset_data & 0x20)
 305     relocation -= 3;
 306   else
 307     relocation -= 1;
 308   bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
 309   return bfd_reloc_ok;
 310 }
 311
 312 /* These macros will get 24-bit values from the bfd definition.
 313    Big-endian only.  */
 314 #define bfd_getb_24(BFD,ADDR)                   \
 315  (bfd_get_8 (BFD, ADDR    ) << 16) |            \
 316  (bfd_get_8 (BFD, ADDR + 1) <<  8) |            \
 317  (bfd_get_8 (BFD, ADDR + 2)      )
 318
 319 #define bfd_putb_24(BFD,DATA,ADDR)                              \
 320  bfd_put_8 (BFD, (bfd_byte) ((DATA >> 16) & 0xFF), ADDR    );   \
 321  bfd_put_8 (BFD, (bfd_byte) ((DATA >>  8) & 0xFF), ADDR + 1);   \
 322  bfd_put_8 (BFD, (bfd_byte) ( DATA        & 0xFF), ADDR + 2)
 323
 324 /* Set parameters about this a.out file that are machine-dependent.
 325    This routine is called from some_aout_object_p just before it returns.  */
 326
 327 static const bfd_target *
 328 tic30_aout_callback (abfd)
 329      bfd *abfd;
 330 {
 331   struct internal_exec *execp = exec_hdr (abfd);
 332   unsigned int arch_align_power;
 333   unsigned long arch_align;
 334
 335   /* Calculate the file positions of the parts of a newly read aout header.  */
 336   obj_textsec (abfd)->_raw_size = N_TXTSIZE (*execp);
 337
 338   /* The virtual memory addresses of the sections.  */
 339   obj_textsec (abfd)->vma = N_TXTADDR (*execp);
 340   obj_datasec (abfd)->vma = N_DATADDR (*execp);
 341   obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
 342
 343   obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
 344   obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
 345   obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
 346
 347   /* The file offsets of the sections.  */
 348   obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
 349   obj_datasec (abfd)->filepos = N_DATOFF (*execp);
 350
 351   /* The file offsets of the relocation info.  */
 352   obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
 353   obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
 354
 355   /* The file offsets of the string table and symbol table.  */
 356   obj_sym_filepos (abfd) = N_SYMOFF (*execp);
 357   obj_str_filepos (abfd) = N_STROFF (*execp);
 358
 359   /* Determine the architecture and machine type of the object file.  */
 360 #ifdef SET_ARCH_MACH
 361   SET_ARCH_MACH (abfd, *execp);
 362 #else
 363   bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0L);
 364 #endif
 365
 366   /* Now that we know the architecture, set the alignments of the
 367      sections.  This is normally done by NAME(aout,new_section_hook),
 368      but when the initial sections were created the architecture had
 369      not yet been set.  However, for backward compatibility, we don't
 370      set the alignment power any higher than as required by the size
 371      of the section.  */
 372   arch_align_power = bfd_get_arch_info (abfd)->section_align_power;
 373   arch_align = 1 << arch_align_power;
 374   if ((BFD_ALIGN (obj_textsec (abfd)->_raw_size, arch_align)
 375        == obj_textsec (abfd)->_raw_size)
 376       && (BFD_ALIGN (obj_datasec (abfd)->_raw_size, arch_align)
 377           == obj_datasec (abfd)->_raw_size)
 378       && (BFD_ALIGN (obj_bsssec (abfd)->_raw_size, arch_align)
 379           == obj_bsssec (abfd)->_raw_size))
 380     {
 381       obj_textsec (abfd)->alignment_power = arch_align_power;
 382       obj_datasec (abfd)->alignment_power = arch_align_power;
 383       obj_bsssec (abfd)->alignment_power = arch_align_power;
 384     }
 385   return abfd->xvec;
 386 }
 387
 388 static bfd_reloc_status_type
 389 tic30_aout_final_link_relocate (howto, input_bfd, input_section, contents,
 390                                 address, value, addend)
 391      reloc_howto_type *howto;
 392      bfd *input_bfd;
 393      asection *input_section;
 394      bfd_byte *contents;
 395      bfd_vma address;
 396      bfd_vma value;
 397      bfd_vma addend;
 398 {
 399   bfd_vma relocation;
 400
 401   if (address > input_section->_raw_size)
 402     return bfd_reloc_outofrange;
 403
 404   relocation = value + addend;
 405   if (howto->pc_relative)
 406     {
 407       relocation -= (input_section->output_section->vma + input_section->output_offset);
 408       if (howto->pcrel_offset)
 409         relocation -= address;
 410     }
 411   return tic30_aout_relocate_contents (howto, input_bfd, relocation,
 412                                        contents + address);
 413 }
 414
 415 bfd_reloc_status_type
 416 tic30_aout_relocate_contents (howto, input_bfd, relocation, location)
 417      reloc_howto_type *howto;
 418      bfd *input_bfd;
 419      bfd_vma relocation;
 420      bfd_byte *location;
 421 {
 422   bfd_vma x;
 423   boolean overflow;
 424
 425   if (howto->size < 0)
 426     relocation = -relocation;
 427
 428   switch (howto->size)
 429     {
 430     default:
 431     case 0:
 432       abort ();
 433       break;
 434     case 1:
 435       x = bfd_get_16 (input_bfd, location);
 436       break;
 437     case 2:
 438       x = bfd_getb_24 (input_bfd, location);
 439       break;
 440     case 3:
 441       x = bfd_get_8 (input_bfd, location);
 442       break;
 443     case 4:
 444       x = bfd_get_32 (input_bfd, location);
 445       break;
 446     }
 447
 448   overflow = false;
 449
 450   if (howto->complain_on_overflow != complain_overflow_dont)
 451     {
 452       bfd_vma check;
 453       bfd_signed_vma signed_check;
 454       bfd_vma add;
 455       bfd_signed_vma signed_add;
 456
 457       if (howto->rightshift == 0)
 458         {
 459           check = relocation;
 460           signed_check = (bfd_signed_vma) relocation;
 461         }
 462       else
 463         {
 464           check = relocation >> howto->rightshift;
 465           if ((bfd_signed_vma) relocation >= 0)
 466             signed_check = check;
 467           else
 468             signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift)));
 469         }
 470       add = x & howto->src_mask;
 471       signed_add = add;
 472       if ((add & (((~howto->src_mask) >> 1) & howto->src_mask)) != 0)
 473         signed_add -= (((~howto->src_mask) >> 1) & howto->src_mask) << 1;
 474       if (howto->bitpos == 0)
 475         {
 476           check += add;
 477           signed_check += signed_add;
 478         }
 479       else
 480         {
 481           check += add >> howto->bitpos;
 482           if (signed_add >= 0)
 483             signed_check += add >> howto->bitpos;
 484           else
 485             signed_check += ((add >> howto->bitpos) | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->bitpos)));
 486         }
 487       switch (howto->complain_on_overflow)
 488         {
 489         case complain_overflow_signed:
 490           {
 491             bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
 492             bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
 493             if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
 494               overflow = true;
 495           }
 496           break;
 497         case complain_overflow_unsigned:
 498           {
 499             bfd_vma reloc_unsigned_max = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
 500             if (check > reloc_unsigned_max)
 501               overflow = true;
 502           }
 503           break;
 504         case complain_overflow_bitfield:
 505           {
 506             bfd_vma reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
 507             if ((check & ~reloc_bits) != 0
 508                 && (((bfd_vma) signed_check & ~reloc_bits)
 509                     != ((bfd_vma) -1 & ~reloc_bits)))
 510               overflow = true;
 511           }
 512           break;
 513         default:
 514           abort ();
 515         }
 516     }
 517   relocation >>= (bfd_vma) howto->rightshift;
 518   relocation <<= (bfd_vma) howto->bitpos;
 519   x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask));
 520   switch (howto->size)
 521     {
 522     default:
 523     case 0:
 524       abort ();
 525       break;
 526     case 1:
 527       bfd_put_16 (input_bfd, x, location);
 528       break;
 529     case 2:
 530       bfd_putb_24 (input_bfd, x, location);
 531       break;
 532     case 3:
 533       bfd_put_8 (input_bfd, x, location);
 534       break;
 535     case 4:
 536       bfd_put_32 (input_bfd, x, location);
 537       break;
 538     }
 539   return overflow ? bfd_reloc_overflow : bfd_reloc_ok;
 540 }
 541
 542 /* Finish up the reading of an a.out file header.  */
 543
 544 static const bfd_target *
 545 tic30_aout_object_p (abfd)
 546      bfd *abfd;
 547 {
 548   struct external_exec exec_bytes;      /* Raw exec header from file.  */
 549   struct internal_exec exec;    /* Cleaned-up exec header.  */
 550   const bfd_target *target;
 551   bfd_size_type amt = EXEC_BYTES_SIZE;
 552
 553   if (bfd_bread ((PTR) &exec_bytes, amt, abfd) != amt)
 554     {
 555       if (bfd_get_error () != bfd_error_system_call)
 556         bfd_set_error (bfd_error_wrong_format);
 557       return 0;
 558     }
 559
 560 #ifdef SWAP_MAGIC
 561   exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
 562 #else
 563   exec.a_info = H_GET_32 (abfd, exec_bytes.e_info);
 564 #endif /* SWAP_MAGIC */
 565
 566   if (N_BADMAG (exec))
 567     return 0;
 568 #ifdef MACHTYPE_OK
 569   if (!(MACHTYPE_OK (N_MACHTYPE (exec))))
 570     return 0;
 571 #endif
 572
 573   NAME (aout, swap_exec_header_in) (abfd, &exec_bytes, &exec);
 574
 575 #ifdef SWAP_MAGIC
 576   /* swap_exec_header_in read in a_info with the wrong byte order */
 577   exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
 578 #endif /* SWAP_MAGIC */
 579
 580   target = NAME (aout, some_aout_object_p) (abfd, &exec, tic30_aout_callback);
 581
 582 #ifdef ENTRY_CAN_BE_ZERO
 583   /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
 584      means that it isn't obvious if EXEC_P should be set.
 585      All of the following must be true for an executable:
 586      There must be no relocations, the bfd can be neither an
 587      archive nor an archive element, and the file must be executable.  */
 588
 589   if (exec.a_trsize + exec.a_drsize == 0
 590       && bfd_get_format (abfd) == bfd_object && abfd->my_archive == NULL)
 591     {
 592       struct stat buf;
 593 #ifndef S_IXUSR
 594 #define S_IXUSR 0100            /* Execute by owner.  */
 595 #endif
 596       if (stat (abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
 597         abfd->flags |= EXEC_P;
 598     }
 599 #endif /* ENTRY_CAN_BE_ZERO */
 600
 601   return target;
 602 }
 603
 604 /* Copy private section data.  This actually does nothing with the
 605    sections.  It copies the subformat field.  We copy it here, because
 606    we need to know whether this is a QMAGIC file before we set the
 607    section contents, and copy_private_bfd_data is not called until
 608    after the section contents have been set.  */
 609
 610 static boolean
 611 MY_bfd_copy_private_section_data (ibfd, isec, obfd, osec)
 612      bfd *ibfd;
 613      asection *isec ATTRIBUTE_UNUSED;
 614      bfd *obfd;
 615      asection *osec ATTRIBUTE_UNUSED;
 616 {
 617   if (bfd_get_flavour (obfd) == bfd_target_aout_flavour)
 618     obj_aout_subformat (obfd) = obj_aout_subformat (ibfd);
 619   return true;
 620 }
 621
 622 /* Write an object file.
 623    Section contents have already been written.  We write the
 624    file header, symbols, and relocation.  */
 625
 626 static boolean
 627 tic30_aout_write_object_contents (abfd)
 628      bfd *abfd;
 629 {
 630   struct external_exec exec_bytes;
 631   struct internal_exec *execp = exec_hdr (abfd);
 632
 633   obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 634
 635   {
 636     bfd_size_type text_size;    /* Dummy vars.  */
 637     file_ptr text_end;
 638
 639     if (adata (abfd).magic == undecided_magic)
 640       NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end);
 641
 642     execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;
 643     execp->a_entry = bfd_get_start_address (abfd);
 644
 645     execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
 646     execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
 647     NAME (aout, swap_exec_header_out) (abfd, execp, &exec_bytes);
 648
 649     if (adata (abfd).exec_bytes_size > 0)
 650       {
 651         bfd_size_type amt;
 652         if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
 653           return false;
 654         amt = adata (abfd).exec_bytes_size;
 655         if (bfd_bwrite ((PTR) &exec_bytes, amt, abfd) != amt)
 656           return false;
 657       }
 658
 659     /* Now write out reloc info, followed by syms and strings.  */
 660     if (bfd_get_outsymbols (abfd) != (asymbol **) NULL
 661         && bfd_get_symcount (abfd) != 0)
 662       {
 663         if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*execp)), SEEK_SET) != 0)
 664           return false;
 665
 666         if (!NAME (aout, write_syms) (abfd))
 667           return false;
 668       }
 669
 670     if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)
 671       return false;
 672     if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)))
 673       return false;
 674
 675     if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)
 676       return false;
 677     if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd)))
 678       return false;
 679   }
 680
 681   return true;
 682 }
 683
 684 static boolean
 685 tic30_aout_set_sizes (abfd)
 686      bfd *abfd;
 687 {
 688   adata (abfd).page_size = TARGET_PAGE_SIZE;
 689
 690 #ifdef SEGMENT_SIZE
 691   adata (abfd).segment_size = SEGMENT_SIZE;
 692 #else
 693   adata (abfd).segment_size = TARGET_PAGE_SIZE;
 694 #endif
 695
 696 #ifdef ZMAGIC_DISK_BLOCK_SIZE
 697   adata (abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE;
 698 #else
 699   adata (abfd).zmagic_disk_block_size = TARGET_PAGE_SIZE;
 700 #endif
 701
 702   adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 703
 704   return true;
 705 }
 706
 707 #ifndef MY_final_link_callback
 708
 709 /* Callback for the final_link routine to set the section offsets.  */
 710
 711 static void MY_final_link_callback
 712   PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
 713
 714 static void
 715 MY_final_link_callback (abfd, ptreloff, pdreloff, psymoff)
 716      bfd *abfd;
 717      file_ptr *ptreloff;
 718      file_ptr *pdreloff;
 719      file_ptr *psymoff;
 720 {
 721   struct internal_exec *execp = exec_hdr (abfd);
 722
 723   *ptreloff = obj_datasec (abfd)->filepos + execp->a_data;
 724   *pdreloff = *ptreloff + execp->a_trsize;
 725   *psymoff = *pdreloff + execp->a_drsize;;
 726 }
 727
 728 #endif
 729
 730 #ifndef MY_bfd_final_link
 731
 732 /* Final link routine.  We need to use a call back to get the correct
 733    offsets in the output file.  */
 734
 735 static boolean
 736 MY_bfd_final_link (abfd, info)
 737      bfd *abfd;
 738      struct bfd_link_info *info;
 739 {
 740   struct internal_exec *execp = exec_hdr (abfd);
 741   file_ptr pos;
 742   bfd_vma vma = 0;
 743   int pad;
 744
 745   /* Set the executable header size to 0, as we don't want one for an
 746      output.  */
 747   adata (abfd).exec_bytes_size = 0;
 748   pos = adata (abfd).exec_bytes_size;
 749   /* Text.  */
 750   vma = info->create_object_symbols_section->vma;
 751   pos += vma;
 752   obj_textsec (abfd)->filepos = pos;
 753   obj_textsec (abfd)->vma = vma;
 754   obj_textsec (abfd)->user_set_vma = 1;
 755   pos += obj_textsec (abfd)->_raw_size;
 756   vma += obj_textsec (abfd)->_raw_size;
 757
 758   /* Data.  */
 759   if (abfd->flags & D_PAGED)
 760     {
 761       if (info->create_object_symbols_section->next->vma > 0)
 762         obj_datasec (abfd)->vma = info->create_object_symbols_section->next->vma;
 763       else
 764         obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
 765     }
 766   else
 767     {
 768       obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
 769     }
 770
 771   if (obj_datasec (abfd)->vma < vma)
 772     obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
 773
 774   obj_datasec (abfd)->user_set_vma = 1;
 775   vma = obj_datasec (abfd)->vma;
 776   obj_datasec (abfd)->filepos = vma + adata (abfd).exec_bytes_size;
 777   execp->a_text = vma - obj_textsec (abfd)->vma;
 778   obj_textsec (abfd)->_raw_size = execp->a_text;
 779
 780   /* Since BSS follows data immediately, see if it needs alignment.  */
 781   vma += obj_datasec (abfd)->_raw_size;
 782   pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
 783   obj_datasec (abfd)->_raw_size += pad;
 784   pos += obj_datasec (abfd)->_raw_size;
 785   execp->a_data = obj_datasec (abfd)->_raw_size;
 786
 787   /* BSS.  */
 788   obj_bsssec (abfd)->vma = vma;
 789   obj_bsssec (abfd)->user_set_vma = 1;
 790
 791   /* We are fully resized, so don't readjust in final_link.  */
 792   adata (abfd).magic = z_magic;
 793
 794   return NAME (aout, final_link) (abfd, info, MY_final_link_callback);
 795 }
 796
 797 #endif
 798
 799 enum machine_type
 800 tic30_aout_machine_type (arch, machine, unknown)
 801      enum bfd_architecture arch;
 802      unsigned long machine ATTRIBUTE_UNUSED;
 803      boolean *unknown;
 804 {
 805   enum machine_type arch_flags;
 806
 807   arch_flags = M_UNKNOWN;
 808   *unknown = true;
 809
 810   switch (arch)
 811     {
 812     case bfd_arch_tic30:
 813       *unknown = false;
 814       break;
 815     default:
 816       arch_flags = M_UNKNOWN;
 817     }
 818   if (arch_flags != M_UNKNOWN)
 819     *unknown = false;
 820   return arch_flags;
 821 }
 822
 823 boolean
 824 tic30_aout_set_arch_mach (abfd, arch, machine)
 825      bfd *abfd;
 826      enum bfd_architecture arch;
 827      unsigned long machine;
 828 {
 829   if (!bfd_default_set_arch_mach (abfd, arch, machine))
 830     return false;
 831   if (arch != bfd_arch_unknown)
 832     {
 833       boolean unknown;
 834       tic30_aout_machine_type (arch, machine, &unknown);
 835       if (unknown)
 836         return false;
 837     }
 838   obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 839   return (*aout_backend_info (abfd)->set_sizes) (abfd);
 840 }
 841
 842 /* We assume BFD generic archive files.  */
 843 #ifndef MY_openr_next_archived_file
 844 #define MY_openr_next_archived_file     bfd_generic_openr_next_archived_file
 845 #endif
 846 #ifndef MY_get_elt_at_index
 847 #define MY_get_elt_at_index             _bfd_generic_get_elt_at_index
 848 #endif
 849 #ifndef MY_generic_stat_arch_elt
 850 #define MY_generic_stat_arch_elt        bfd_generic_stat_arch_elt
 851 #endif
 852 #ifndef MY_slurp_armap
 853 #define MY_slurp_armap                  bfd_slurp_bsd_armap
 854 #endif
 855 #ifndef MY_slurp_extended_name_table
 856 #define MY_slurp_extended_name_table    _bfd_slurp_extended_name_table
 857 #endif
 858 #ifndef MY_construct_extended_name_table
 859 #define MY_construct_extended_name_table \
 860   _bfd_archive_bsd_construct_extended_name_table
 861 #endif
 862 #ifndef MY_write_armap
 863 #define MY_write_armap          bsd_write_armap
 864 #endif
 865 #ifndef MY_read_ar_hdr
 866 #define MY_read_ar_hdr          _bfd_generic_read_ar_hdr
 867 #endif
 868 #ifndef MY_truncate_arname
 869 #define MY_truncate_arname              bfd_bsd_truncate_arname
 870 #endif
 871 #ifndef MY_update_armap_timestamp
 872 #define MY_update_armap_timestamp _bfd_archive_bsd_update_armap_timestamp
 873 #endif
 874
 875 /* No core file defined here -- configure in trad-core.c separately.  */
 876 #ifndef MY_core_file_failing_command
 877 #define MY_core_file_failing_command _bfd_nocore_core_file_failing_command
 878 #endif
 879 #ifndef MY_core_file_failing_signal
 880 #define MY_core_file_failing_signal     _bfd_nocore_core_file_failing_signal
 881 #endif
 882 #ifndef MY_core_file_matches_executable_p
 883 #define MY_core_file_matches_executable_p       \
 884                                 _bfd_nocore_core_file_matches_executable_p
 885 #endif
 886 #ifndef MY_core_file_p
 887 #define MY_core_file_p          _bfd_dummy_target
 888 #endif
 889
 890 #ifndef MY_bfd_debug_info_start
 891 #define MY_bfd_debug_info_start         bfd_void
 892 #endif
 893 #ifndef MY_bfd_debug_info_end
 894 #define MY_bfd_debug_info_end           bfd_void
 895 #endif
 896 #ifndef MY_bfd_debug_info_accumulate
 897 #define MY_bfd_debug_info_accumulate    \
 898                         (void (*) PARAMS ((bfd*, struct sec *))) bfd_void
 899 #endif
 900
 901 #ifndef MY_core_file_failing_command
 902 #define MY_core_file_failing_command NAME(aout,core_file_failing_command)
 903 #endif
 904 #ifndef MY_core_file_failing_signal
 905 #define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
 906 #endif
 907 #ifndef MY_core_file_matches_executable_p
 908 #define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
 909 #endif
 910 #ifndef MY_set_section_contents
 911 #define MY_set_section_contents NAME(aout,set_section_contents)
 912 #endif
 913 #ifndef MY_get_section_contents
 914 #define MY_get_section_contents aout_32_get_section_contents
 915 #endif
 916 #ifndef MY_get_section_contents_in_window
 917 #define MY_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
 918 #endif
 919 #ifndef MY_new_section_hook
 920 #define MY_new_section_hook NAME(aout,new_section_hook)
 921 #endif
 922 #ifndef MY_get_symtab_upper_bound
 923 #define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
 924 #endif
 925 #ifndef MY_get_symtab
 926 #define MY_get_symtab NAME(aout,get_symtab)
 927 #endif
 928 #ifndef MY_get_reloc_upper_bound
 929 #define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
 930 #endif
 931 #ifndef MY_canonicalize_reloc
 932 #define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
 933 #endif
 934 #ifndef MY_make_empty_symbol
 935 #define MY_make_empty_symbol NAME(aout,make_empty_symbol)
 936 #endif
 937 #ifndef MY_print_symbol
 938 #define MY_print_symbol NAME(aout,print_symbol)
 939 #endif
 940 #ifndef MY_get_symbol_info
 941 #define MY_get_symbol_info NAME(aout,get_symbol_info)
 942 #endif
 943 #ifndef MY_get_lineno
 944 #define MY_get_lineno NAME(aout,get_lineno)
 945 #endif
 946 #ifndef MY_set_arch_mach
 947 #define MY_set_arch_mach tic30_aout_set_arch_mach
 948 #endif
 949 #ifndef MY_find_nearest_line
 950 #define MY_find_nearest_line NAME(aout,find_nearest_line)
 951 #endif
 952 #ifndef MY_sizeof_headers
 953 #define MY_sizeof_headers NAME(aout,sizeof_headers)
 954 #endif
 955 #ifndef MY_bfd_get_relocated_section_contents
 956 #define MY_bfd_get_relocated_section_contents \
 957                         bfd_generic_get_relocated_section_contents
 958 #endif
 959 #ifndef MY_bfd_relax_section
 960 #define MY_bfd_relax_section bfd_generic_relax_section
 961 #endif
 962 #ifndef MY_bfd_gc_sections
 963 #define MY_bfd_gc_sections bfd_generic_gc_sections
 964 #endif
 965 #ifndef MY_bfd_merge_sections
 966 #define MY_bfd_merge_sections bfd_generic_merge_sections
 967 #endif
 968 #ifndef MY_bfd_discard_group
 969 #define MY_bfd_discard_group bfd_generic_discard_group
 970 #endif
 971 #ifndef MY_bfd_reloc_type_lookup
 972 #define MY_bfd_reloc_type_lookup tic30_aout_reloc_type_lookup
 973 #endif
 974 #ifndef MY_bfd_make_debug_symbol
 975 #define MY_bfd_make_debug_symbol 0
 976 #endif
 977 #ifndef MY_read_minisymbols
 978 #define MY_read_minisymbols NAME(aout,read_minisymbols)
 979 #endif
 980 #ifndef MY_minisymbol_to_symbol
 981 #define MY_minisymbol_to_symbol NAME(aout,minisymbol_to_symbol)
 982 #endif
 983 #ifndef MY_bfd_link_hash_table_create
 984 #define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
 985 #endif
 986 #ifndef MY_bfd_link_hash_table_free
 987 #define MY_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
 988 #endif
 989 #ifndef MY_bfd_link_add_symbols
 990 #define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
 991 #endif
 992 #ifndef MY_bfd_link_just_syms
 993 #define MY_bfd_link_just_syms _bfd_generic_link_just_syms
 994 #endif
 995 #ifndef MY_bfd_link_split_section
 996 #define MY_bfd_link_split_section  _bfd_generic_link_split_section
 997 #endif
 998
 999 #ifndef MY_bfd_copy_private_bfd_data
1000 #define MY_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
1001 #endif
1002
1003 #ifndef MY_bfd_merge_private_bfd_data
1004 #define MY_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
1005 #endif
1006
1007 #ifndef MY_bfd_copy_private_symbol_data
1008 #define MY_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
1009 #endif
1010
1011 #ifndef MY_bfd_print_private_bfd_data
1012 #define MY_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
1013 #endif
1014
1015 #ifndef MY_bfd_set_private_flags
1016 #define MY_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
1017 #endif
1018
1019 #ifndef MY_bfd_is_local_label_name
1020 #define MY_bfd_is_local_label_name bfd_generic_is_local_label_name
1021 #endif
1022
1023 #ifndef MY_bfd_free_cached_info
1024 #define MY_bfd_free_cached_info NAME(aout,bfd_free_cached_info)
1025 #endif
1026
1027 #ifndef MY_close_and_cleanup
1028 #define MY_close_and_cleanup MY_bfd_free_cached_info
1029 #endif
1030
1031 #ifndef MY_get_dynamic_symtab_upper_bound
1032 #define MY_get_dynamic_symtab_upper_bound \
1033   _bfd_nodynamic_get_dynamic_symtab_upper_bound
1034 #endif
1035 #ifndef MY_canonicalize_dynamic_symtab
1036 #define MY_canonicalize_dynamic_symtab \
1037   _bfd_nodynamic_canonicalize_dynamic_symtab
1038 #endif
1039 #ifndef MY_get_dynamic_reloc_upper_bound
1040 #define MY_get_dynamic_reloc_upper_bound \
1041   _bfd_nodynamic_get_dynamic_reloc_upper_bound
1042 #endif
1043 #ifndef MY_canonicalize_dynamic_reloc
1044 #define MY_canonicalize_dynamic_reloc \
1045   _bfd_nodynamic_canonicalize_dynamic_reloc
1046 #endif
1047
1048 /* Aout symbols normally have leading underscores */
1049 #ifndef MY_symbol_leading_char
1050 #define MY_symbol_leading_char '_'
1051 #endif
1052
1053 /* Aout archives normally use spaces for padding */
1054 #ifndef AR_PAD_CHAR
1055 #define AR_PAD_CHAR ' '
1056 #endif
1057
1058 #ifndef MY_BFD_TARGET
1059 const bfd_target tic30_aout_vec =
1060 {
1061   TARGETNAME,                   /* name */
1062   bfd_target_aout_flavour,
1063   BFD_ENDIAN_BIG,               /* target byte order (big) */
1064   BFD_ENDIAN_BIG,               /* target headers byte order (big) */
1065   (HAS_RELOC |                  /* object flags */
1066    HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
1067   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),        /* section flags */
1068   MY_symbol_leading_char,
1069   AR_PAD_CHAR,                  /* ar_pad_char */
1070   15,                           /* ar_max_namelen */
1071   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1072   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1073   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* data */
1074   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1075   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1076   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* hdrs */
1077   {_bfd_dummy_target, MY_object_p,      /* bfd_check_format */
1078    bfd_generic_archive_p, MY_core_file_p},
1079   {bfd_false, MY_mkobject,      /* bfd_set_format */
1080    _bfd_generic_mkarchive, bfd_false},
1081   {bfd_false, MY_write_object_contents,         /* bfd_write_contents */
1082    _bfd_write_archive_contents, bfd_false},
1083
1084   BFD_JUMP_TABLE_GENERIC (MY),
1085   BFD_JUMP_TABLE_COPY (MY),
1086   BFD_JUMP_TABLE_CORE (MY),
1087   BFD_JUMP_TABLE_ARCHIVE (MY),
1088   BFD_JUMP_TABLE_SYMBOLS (MY),
1089   BFD_JUMP_TABLE_RELOCS (MY),
1090   BFD_JUMP_TABLE_WRITE (MY),
1091   BFD_JUMP_TABLE_LINK (MY),
1092   BFD_JUMP_TABLE_DYNAMIC (MY),
1093
1094   NULL,
1095
1096   (PTR) MY_backend_data
1097 };
1098 #endif /* MY_BFD_TARGET */