bfd/coff64-rs6000.c

   1 /* BFD back-end for IBM RS/6000 "XCOFF64" files.
   2    Copyright 2000
   3    Free Software Foundation, Inc.
   4    Written Clinton Popetz.
   5    Contributed by Cygnus Support.
   6
   7 This file is part of BFD, the Binary File Descriptor library.
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 /* Internalcoff.h and coffcode.h modify themselves based on these flags.  */
  24 #define XCOFF64
  25 #define RS6000COFF_C 1
  26
  27 #include "bfd.h"
  28 #include "sysdep.h"
  29 #include "libbfd.h"
  30 #include "coff/internal.h"
  31 #include "coff/rs6k64.h"
  32 #include "libcoff.h"
  33
  34
  35 #define GET_FILEHDR_SYMPTR bfd_h_get_64
  36 #define PUT_FILEHDR_SYMPTR bfd_h_put_64
  37 #define GET_AOUTHDR_DATA_START bfd_h_get_64
  38 #define PUT_AOUTHDR_DATA_START bfd_h_put_64
  39 #define GET_AOUTHDR_TEXT_START bfd_h_get_64
  40 #define PUT_AOUTHDR_TEXT_START bfd_h_put_64
  41 #define GET_AOUTHDR_TSIZE bfd_h_get_64
  42 #define PUT_AOUTHDR_TSIZE bfd_h_put_64
  43 #define GET_AOUTHDR_DSIZE bfd_h_get_64
  44 #define PUT_AOUTHDR_DSIZE bfd_h_put_64
  45 #define GET_AOUTHDR_BSIZE bfd_h_get_64
  46 #define PUT_AOUTHDR_BSIZE bfd_h_put_64
  47 #define GET_AOUTHDR_ENTRY bfd_h_get_64
  48 #define PUT_AOUTHDR_ENTRY bfd_h_put_64
  49 #define GET_SCNHDR_PADDR bfd_h_get_64
  50 #define PUT_SCNHDR_PADDR bfd_h_put_64
  51 #define GET_SCNHDR_VADDR bfd_h_get_64
  52 #define PUT_SCNHDR_VADDR bfd_h_put_64
  53 #define GET_SCNHDR_SIZE bfd_h_get_64
  54 #define PUT_SCNHDR_SIZE bfd_h_put_64
  55 #define GET_SCNHDR_SCNPTR bfd_h_get_64
  56 #define PUT_SCNHDR_SCNPTR bfd_h_put_64
  57 #define GET_SCNHDR_RELPTR bfd_h_get_64
  58 #define PUT_SCNHDR_RELPTR bfd_h_put_64
  59 #define GET_SCNHDR_LNNOPTR bfd_h_get_64
  60 #define PUT_SCNHDR_LNNOPTR bfd_h_put_64
  61 #define GET_SCNHDR_NRELOC bfd_h_get_32
  62 #define MAX_SCNHDR_NRELOC 0xffffffff
  63 #define PUT_SCNHDR_NRELOC bfd_h_put_32
  64 #define GET_SCNHDR_NLNNO bfd_h_get_32
  65 #define MAX_SCNHDR_NLNNO 0xffffffff
  66 #define PUT_SCNHDR_NLNNO bfd_h_put_32
  67 #define GET_RELOC_VADDR bfd_h_get_64
  68 #define PUT_RELOC_VADDR bfd_h_put_64
  69
  70 #define COFF_FORCE_SYMBOLS_IN_STRINGS
  71 #define COFF_DEBUG_STRING_WIDE_PREFIX
  72
  73 #define TARGET_SYM rs6000coff64_vec
  74 #define TARGET_NAME "aixcoff64-rs6000"
  75
  76 #define COFF_ADJUST_SCNHDR_OUT_POST(ABFD,INT,EXT) \
  77 do { \
  78   memset (((SCNHDR *)EXT)->s_pad, 0, sizeof (((SCNHDR *)EXT)->s_pad));\
  79 } while(0)
  80
  81 #define NO_COFF_LINENOS
  82
  83 #define coff_SWAP_lineno_in xcoff64_swap_lineno_in
  84 #define coff_SWAP_lineno_out xcoff64_swap_lineno_out
  85
  86 #define PUTWORD bfd_h_put_32
  87 #define PUTHALF bfd_h_put_16
  88 #define PUTBYTE bfd_h_put_8
  89 #define GETWORD bfd_h_get_32
  90 #define GETHALF bfd_h_get_16
  91 #define GETBYTE bfd_h_get_8
  92
  93
  94 /* For XCOFF64, the effective width of symndx changes depending on
  95    whether we are the first entry.  Sigh.  */
  96 static void
  97 xcoff64_swap_lineno_in (abfd, ext1, in1)
  98      bfd            *abfd;
  99      PTR ext1;
 100      PTR in1;
 101 {
 102   LINENO *ext = (LINENO *)ext1;
 103   struct internal_lineno      *in = (struct internal_lineno *)in1;
 104
 105   in->l_lnno = bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
 106   if (in->l_lnno == 0)
 107     in->l_addr.l_symndx =
 108             bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
 109   else
 110     in->l_addr.l_symndx =
 111             bfd_h_get_64(abfd, (bfd_byte *) ext->l_addr.l_symndx);
 112 }
 113
 114 static unsigned int
 115 xcoff64_swap_lineno_out (abfd, inp, outp)
 116      bfd       *abfd;
 117      PTR        inp;
 118      PTR        outp;
 119 {
 120   struct internal_lineno *in = (struct internal_lineno *)inp;
 121   struct external_lineno *ext = (struct external_lineno *)outp;
 122   PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
 123           ext->l_addr.l_symndx);
 124
 125   bfd_h_put_32 (abfd, in->l_lnno,  (bfd_byte *) (ext->l_lnno));
 126   if (in->l_lnno == 0)
 127     bfd_h_put_32 (abfd, in->l_addr.l_symndx, (bfd_byte *)ext->l_addr.l_symndx);
 128   else
 129     bfd_h_put_64 (abfd, in->l_addr.l_symndx, (bfd_byte *)ext->l_addr.l_symndx);
 130
 131   return bfd_coff_linesz (abfd);
 132 }
 133
 134 #define NO_COFF_SYMBOLS
 135
 136 static void xcoff64_swap_sym_in PARAMS ((bfd *, PTR, PTR));
 137 static unsigned int xcoff64_swap_sym_out PARAMS ((bfd *, PTR, PTR));
 138 static void xcoff64_swap_aux_in PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 139 static unsigned int xcoff64_swap_aux_out PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 140
 141 static void
 142 xcoff64_swap_sym_in (abfd, ext1, in1)
 143      bfd            *abfd;
 144      PTR ext1;
 145      PTR in1;
 146 {
 147   SYMENT *ext = (SYMENT *)ext1;
 148   struct internal_syment      *in = (struct internal_syment *)in1;
 149
 150
 151   in->_n._n_n._n_zeroes = 0;
 152   in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e_offset);
 153   in->n_value = bfd_h_get_64(abfd, (bfd_byte *) ext->e.e_value);
 154   in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
 155   in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
 156   in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
 157   in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
 158 }
 159
 160 static unsigned int
 161 xcoff64_swap_sym_out (abfd, inp, extp)
 162      bfd       *abfd;
 163      PTR        inp;
 164      PTR        extp;
 165 {
 166   struct internal_syment *in = (struct internal_syment *)inp;
 167   SYMENT *ext =(SYMENT *)extp;
 168
 169   bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *)  ext->e_offset);
 170   bfd_h_put_64(abfd,  in->n_value , (bfd_byte *) ext->e.e_value);
 171   bfd_h_put_16(abfd,  in->n_scnum , (bfd_byte *) ext->e_scnum);
 172   bfd_h_put_16(abfd,  in->n_type , (bfd_byte *) ext->e_type);
 173   bfd_h_put_8(abfd,  in->n_sclass , ext->e_sclass);
 174   bfd_h_put_8(abfd,  in->n_numaux , ext->e_numaux);
 175   return bfd_coff_symesz (abfd);
 176 }
 177
 178 static void
 179 xcoff64_swap_aux_in (abfd, ext1, type, class, indx, numaux, in1)
 180      bfd            *abfd;
 181      PTR              ext1;
 182      int             type;
 183      int             class;
 184      int              indx;
 185      int              numaux;
 186      PTR              in1;
 187 {
 188   AUXENT    *ext = (AUXENT *)ext1;
 189   union internal_auxent *in = (union internal_auxent *)in1;
 190
 191   switch (class) {
 192     case C_FILE:
 193       if (ext->x_file.x_fname[0] == 0) {
 194           in->x_file.x_n.x_zeroes = 0;
 195           in->x_file.x_n.x_offset =
 196            bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
 197         } else {
 198             if (numaux > 1)
 199               {
 200                 if (indx == 0)
 201           memcpy (in->x_file.x_fname, ext->x_file.x_fname,
 202                           numaux * sizeof (AUXENT));
 203               }
 204             else
 205               {
 206                 memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
 207               }
 208           }
 209       goto end;
 210
 211       /* RS/6000 "csect" auxents */
 212     case C_EXT:
 213     case C_HIDEXT:
 214       if (indx + 1 == numaux)
 215         {
 216           in->x_csect.x_scnlen.l =
 217               bfd_h_get_32(abfd, ext->x_csect.x_scnlen_lo);
 218           /* FIXME: If we want section lengths larger than 32 bits, we need
 219              to modify the internal coff structures to support it.  */
 220           in->x_csect.x_parmhash = bfd_h_get_32 (abfd,
 221                                                  ext->x_csect.x_parmhash);
 222           in->x_csect.x_snhash   = bfd_h_get_16 (abfd, ext->x_csect.x_snhash);
 223           /* We don't have to hack bitfields in x_smtyp because it's
 224              defined by shifts-and-ands, which are equivalent on all
 225              byte orders.  */
 226           in->x_csect.x_smtyp    = bfd_h_get_8  (abfd, ext->x_csect.x_smtyp);
 227           in->x_csect.x_smclas   = bfd_h_get_8  (abfd, ext->x_csect.x_smclas);
 228           goto end;
 229         }
 230       break;
 231
 232     case C_STAT:
 233     case C_LEAFSTAT:
 234     case C_HIDDEN:
 235       if (type == T_NULL) {
 236           /* PE defines some extra fields; we zero them out for
 237              safety.  */
 238           in->x_scn.x_checksum = 0;
 239           in->x_scn.x_associated = 0;
 240           in->x_scn.x_comdat = 0;
 241
 242           goto end;
 243         }
 244       break;
 245     }
 246
 247   if (class == C_BLOCK || class == C_FCN || ISFCN (type) || ISTAG (class))
 248     {
 249       in->x_sym.x_fcnary.x_fcn.x_lnnoptr = bfd_h_get_64(abfd, (bfd_byte *)
 250               ext->x_sym.x_fcnary.x_fcn.x_lnnoptr);
 251       in->x_sym.x_fcnary.x_fcn.x_endndx.l = bfd_h_get_32(abfd, (bfd_byte *)
 252               ext->x_sym.x_fcnary.x_fcn.x_endndx);
 253     }
 254   if (ISFCN(type)) {
 255     in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_fsize);
 256   }
 257   else {
 258     in->x_sym.x_misc.x_lnsz.x_lnno = bfd_h_get_32(abfd, (bfd_byte *)
 259             ext->x_sym.x_fcnary.x_lnsz.x_lnno);
 260     in->x_sym.x_misc.x_lnsz.x_size = bfd_h_get_16(abfd, (bfd_byte *)
 261             ext->x_sym.x_fcnary.x_lnsz.x_size);
 262   }
 263
 264 end: ;
 265   /* the semicolon is because MSVC doesn't like labels at
 266      end of block. */
 267
 268 }
 269
 270
 271
 272 static unsigned int
 273 xcoff64_swap_aux_out (abfd, inp, type, class, indx, numaux, extp)
 274      bfd   *abfd;
 275      PTR        inp;
 276      int   type;
 277      int   class;
 278      int   indx ATTRIBUTE_UNUSED;
 279      int   numaux ATTRIBUTE_UNUSED;
 280      PTR        extp;
 281 {
 282   union internal_auxent *in = (union internal_auxent *)inp;
 283   AUXENT *ext = (AUXENT *)extp;
 284
 285   memset((PTR)ext, 0, bfd_coff_auxesz (abfd));
 286   switch (class)
 287     {
 288   case C_FILE:
 289     if (in->x_file.x_fname[0] == 0)
 290       {
 291       PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes);
 292       PUTWORD(abfd,
 293               in->x_file.x_n.x_offset,
 294               (bfd_byte *) ext->x_file.x_n.x_offset);
 295     }
 296     else
 297       {
 298       memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
 299       }
 300     PUTBYTE (abfd, _AUX_FILE, (bfd_byte *) ext->x_auxtype.x_auxtype);
 301     goto end;
 302
 303   /* RS/6000 "csect" auxents */
 304   case C_EXT:
 305   case C_HIDEXT:
 306     if (indx + 1 == numaux)
 307       {
 308         PUTWORD (abfd, in->x_csect.x_scnlen.l, ext->x_csect.x_scnlen_lo);
 309         PUTWORD (abfd, in->x_csect.x_parmhash,  ext->x_csect.x_parmhash);
 310         PUTHALF (abfd, in->x_csect.x_snhash,    ext->x_csect.x_snhash);
 311         /* We don't have to hack bitfields in x_smtyp because it's
 312            defined by shifts-and-ands, which are equivalent on all
 313            byte orders.  */
 314         PUTBYTE (abfd, in->x_csect.x_smtyp,     ext->x_csect.x_smtyp);
 315         PUTBYTE (abfd, in->x_csect.x_smclas,    ext->x_csect.x_smclas);
 316         PUTBYTE (abfd, _AUX_CSECT, (bfd_byte *) ext->x_auxtype.x_auxtype);
 317         goto end;
 318       }
 319     break;
 320
 321   case C_STAT:
 322   case C_LEAFSTAT:
 323   case C_HIDDEN:
 324     if (type == T_NULL) {
 325       goto end;
 326     }
 327     break;
 328   }
 329
 330   if (class == C_BLOCK || class == C_FCN || ISFCN (type) || ISTAG (class))
 331     {
 332       bfd_h_put_64(abfd,  in->x_sym.x_fcnary.x_fcn.x_lnnoptr,
 333               (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr);
 334       PUTBYTE (abfd, _AUX_FCN, (bfd_byte *) ext->x_auxtype.x_auxtype);
 335       PUTWORD(abfd,  in->x_sym.x_fcnary.x_fcn.x_endndx.l,
 336               (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx);
 337     }
 338   if (ISFCN (type))
 339     PUTWORD (abfd, in->x_sym.x_misc.x_fsize,
 340              (bfd_byte *)  ext->x_sym.x_fcnary.x_fcn.x_fsize);
 341   else
 342     {
 343       bfd_h_put_32(abfd, in->x_sym.x_misc.x_lnsz.x_lnno,
 344               (bfd_byte *)ext->x_sym.x_fcnary.x_lnsz.x_lnno);
 345       bfd_h_put_16(abfd, in->x_sym.x_misc.x_lnsz.x_size,
 346               (bfd_byte *)ext->x_sym.x_fcnary.x_lnsz.x_size);
 347     }
 348
 349 end:
 350   return bfd_coff_auxesz (abfd);
 351 }
 352
 353 #define SELECT_RELOC(internal, howto)                                   \
 354   {                                                                     \
 355     internal.r_type = howto->type;                                      \
 356     internal.r_size =                                                   \
 357       ((howto->complain_on_overflow == complain_overflow_signed         \
 358         ? 0x80                                                          \
 359         : 0)                                                            \
 360        | (howto->bitsize - 1));                                         \
 361   }
 362 \f
 363 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
 364
 365 #define COFF_LONG_FILENAMES
 366
 367 #define RTYPE2HOWTO(cache_ptr, dst) _bfd_xcoff_rtype2howto (cache_ptr, dst)
 368
 369 #define coff_SWAP_sym_in xcoff64_swap_sym_in
 370 #define coff_SWAP_sym_out xcoff64_swap_sym_out
 371 #define coff_SWAP_aux_in xcoff64_swap_aux_in
 372 #define coff_SWAP_aux_out xcoff64_swap_aux_out
 373 #define coff_mkobject _bfd_xcoff_mkobject
 374 #define coff_bfd_copy_private_bfd_data _bfd_xcoff_copy_private_bfd_data
 375 #define coff_bfd_is_local_label_name _bfd_xcoff_is_local_label_name
 376 #define coff_bfd_reloc_type_lookup _bfd_xcoff_reloc_type_lookup
 377 #define coff_relocate_section _bfd_ppc_xcoff_relocate_section
 378
 379 extern boolean _bfd_xcoff_mkobject PARAMS ((bfd *));
 380 extern boolean _bfd_xcoff_copy_private_bfd_data PARAMS ((bfd *, bfd *));
 381 extern boolean _bfd_xcoff_is_local_label_name PARAMS ((bfd *, const char *));
 382 extern void _bfd_xcoff_rtype2howto
 383   PARAMS ((arelent *, struct internal_reloc *));
 384 extern reloc_howto_type *_bfd_xcoff_reloc_type_lookup
 385   PARAMS ((bfd *, bfd_reloc_code_real_type));
 386 extern boolean _bfd_xcoff_slurp_armap PARAMS ((bfd *));
 387 extern const bfd_target *_bfd_xcoff_archive_p PARAMS ((bfd *));
 388 extern PTR _bfd_xcoff_read_ar_hdr PARAMS ((bfd *));
 389 extern bfd *_bfd_xcoff_openr_next_archived_file PARAMS ((bfd *, bfd *));
 390 extern int _bfd_xcoff_generic_stat_arch_elt PARAMS ((bfd *, struct stat *));
 391 extern boolean _bfd_xcoff_write_armap
 392   PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int));
 393 extern boolean _bfd_xcoff_write_archive_contents PARAMS ((bfd *));
 394 extern int _bfd_xcoff_sizeof_headers PARAMS ((bfd *, boolean));
 395
 396 #define _bfd_xcoff_slurp_extended_name_table bfd_false
 397 #define _bfd_xcoff_construct_extended_name_table \
 398   ((boolean (*) PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \
 399    bfd_false)
 400 #define _bfd_xcoff_truncate_arname bfd_dont_truncate_arname
 401
 402 /* We can use the standard get_elt_at_index routine.  */
 403
 404 #define _bfd_xcoff_get_elt_at_index _bfd_generic_get_elt_at_index
 405
 406 /* XCOFF archives do not have a timestamp.  */
 407
 408 #define _bfd_xcoff_update_armap_timestamp bfd_true
 409
 410 #include "coffcode.h"
 411
 412 #define CORE_FILE_P _bfd_dummy_target
 413
 414 #define coff_core_file_failing_command _bfd_nocore_core_file_failing_command
 415 #define coff_core_file_failing_signal _bfd_nocore_core_file_failing_signal
 416 #define coff_core_file_matches_executable_p \
 417   _bfd_nocore_core_file_matches_executable_p
 418
 419 #define _bfd_xcoff_bfd_get_relocated_section_contents \
 420   coff_bfd_get_relocated_section_contents
 421 #define _bfd_xcoff_bfd_relax_section coff_bfd_relax_section
 422 #define _bfd_xcoff_bfd_gc_sections coff_bfd_gc_sections
 423 #define _bfd_xcoff_bfd_link_split_section coff_bfd_link_split_section
 424
 425 /* The transfer vector that leads the outside world to all of the above. */
 426
 427 const bfd_target
 428 #ifdef TARGET_SYM
 429   TARGET_SYM =
 430 #else
 431   rs6000coff64_vec =
 432 #endif
 433 {
 434 #ifdef TARGET_NAME
 435   TARGET_NAME,
 436 #else
 437   "aixcoff64-rs6000",           /* name */
 438 #endif
 439   bfd_target_coff_flavour,
 440   BFD_ENDIAN_BIG,               /* data byte order is big */
 441   BFD_ENDIAN_BIG,               /* header byte order is big */
 442
 443   (HAS_RELOC | EXEC_P |         /* object flags */
 444    HAS_LINENO | HAS_DEBUG | DYNAMIC |
 445    HAS_SYMS | HAS_LOCALS | WP_TEXT),
 446
 447   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 448   0,                            /* leading char */
 449   '/',                          /* ar_pad_char */
 450   15,                           /* ar_max_namelen??? FIXMEmgo */
 451
 452   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 453      bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 454      bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
 455   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 456      bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 457      bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
 458
 459   {_bfd_dummy_target, coff_object_p,    /* bfd_check_format */
 460      _bfd_xcoff_archive_p, CORE_FILE_P},
 461   {bfd_false, coff_mkobject,            /* bfd_set_format */
 462      _bfd_generic_mkarchive, bfd_false},
 463   {bfd_false, coff_write_object_contents,       /* bfd_write_contents */
 464      _bfd_xcoff_write_archive_contents, bfd_false},
 465
 466      BFD_JUMP_TABLE_GENERIC (coff),
 467      BFD_JUMP_TABLE_COPY (coff),
 468      BFD_JUMP_TABLE_CORE (coff),
 469      BFD_JUMP_TABLE_ARCHIVE (_bfd_xcoff),
 470      BFD_JUMP_TABLE_SYMBOLS (coff),
 471      BFD_JUMP_TABLE_RELOCS (coff),
 472      BFD_JUMP_TABLE_WRITE (coff),
 473      BFD_JUMP_TABLE_LINK (_bfd_xcoff),
 474      BFD_JUMP_TABLE_DYNAMIC (_bfd_xcoff),
 475
 476   NULL,
 477
 478   COFF_SWAP_TABLE
 479 };