bfd/libpei.h

   1 /* Support for the generic parts of PE/PEI; common header information.
   2    Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005,
   3    2006, 2007   Free Software Foundation, Inc.
   4    Written by Cygnus Solutions.
   5
   6    This file is part of BFD, the Binary File Descriptor library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23
  24 /* Most of this hacked by  Steve Chamberlain,
  25                         sac@cygnus.com
  26
  27    PE/PEI rearrangement (and code added): Donn Terry
  28                                        Softway Systems, Inc.  */
  29
  30 /* Hey look, some documentation [and in a place you expect to find it]!
  31
  32    The main reference for the pei format is "Microsoft Portable Executable
  33    and Common Object File Format Specification 4.1".  Get it if you need to
  34    do some serious hacking on this code.
  35
  36    Another reference:
  37    "Peering Inside the PE: A Tour of the Win32 Portable Executable
  38    File Format", MSJ 1994, Volume 9.
  39
  40    The *sole* difference between the pe format and the pei format is that the
  41    latter has an MSDOS 2.0 .exe header on the front that prints the message
  42    "This app must be run under Windows." (or some such).
  43    (FIXME: Whether that statement is *really* true or not is unknown.
  44    Are there more subtle differences between pe and pei formats?
  45    For now assume there aren't.  If you find one, then for God sakes
  46    document it here!)
  47
  48    The Microsoft docs use the word "image" instead of "executable" because
  49    the former can also refer to a DLL (shared library).  Confusion can arise
  50    because the `i' in `pei' also refers to "image".  The `pe' format can
  51    also create images (i.e. executables), it's just that to run on a win32
  52    system you need to use the pei format.
  53
  54    FIXME: Please add more docs here so the next poor fool that has to hack
  55    on this code has a chance of getting something accomplished without
  56    wasting too much time.  */
  57
  58 #ifndef GET_FCN_LNNOPTR
  59 #define GET_FCN_LNNOPTR(abfd, ext) \
  60   H_GET_32 (abfd, ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
  61 #endif
  62
  63 #ifndef GET_FCN_ENDNDX
  64 #define GET_FCN_ENDNDX(abfd, ext) \
  65   H_GET_32 (abfd, ext->x_sym.x_fcnary.x_fcn.x_endndx)
  66 #endif
  67
  68 #ifndef PUT_FCN_LNNOPTR
  69 #define PUT_FCN_LNNOPTR(abfd, in, ext) \
  70   H_PUT_32(abfd, in, ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
  71 #endif
  72 #ifndef PUT_FCN_ENDNDX
  73 #define PUT_FCN_ENDNDX(abfd, in, ext) \
  74   H_PUT_32(abfd, in, ext->x_sym.x_fcnary.x_fcn.x_endndx)
  75 #endif
  76 #ifndef GET_LNSZ_LNNO
  77 #define GET_LNSZ_LNNO(abfd, ext) \
  78   H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_lnno)
  79 #endif
  80 #ifndef GET_LNSZ_SIZE
  81 #define GET_LNSZ_SIZE(abfd, ext) \
  82   H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_size)
  83 #endif
  84 #ifndef PUT_LNSZ_LNNO
  85 #define PUT_LNSZ_LNNO(abfd, in, ext) \
  86   H_PUT_16(abfd, in, ext->x_sym.x_misc.x_lnsz.x_lnno)
  87 #endif
  88 #ifndef PUT_LNSZ_SIZE
  89 #define PUT_LNSZ_SIZE(abfd, in, ext) \
  90   H_PUT_16(abfd, in, ext->x_sym.x_misc.x_lnsz.x_size)
  91 #endif
  92 #ifndef GET_SCN_SCNLEN
  93 #define GET_SCN_SCNLEN(abfd, ext) \
  94   H_GET_32 (abfd, ext->x_scn.x_scnlen)
  95 #endif
  96 #ifndef GET_SCN_NRELOC
  97 #define GET_SCN_NRELOC(abfd, ext) \
  98   H_GET_16 (abfd, ext->x_scn.x_nreloc)
  99 #endif
 100 #ifndef GET_SCN_NLINNO
 101 #define GET_SCN_NLINNO(abfd, ext) \
 102   H_GET_16 (abfd, ext->x_scn.x_nlinno)
 103 #endif
 104 #ifndef PUT_SCN_SCNLEN
 105 #define PUT_SCN_SCNLEN(abfd, in, ext) \
 106   H_PUT_32(abfd, in, ext->x_scn.x_scnlen)
 107 #endif
 108 #ifndef PUT_SCN_NRELOC
 109 #define PUT_SCN_NRELOC(abfd, in, ext) \
 110   H_PUT_16(abfd, in, ext->x_scn.x_nreloc)
 111 #endif
 112 #ifndef PUT_SCN_NLINNO
 113 #define PUT_SCN_NLINNO(abfd, in, ext) \
 114   H_PUT_16(abfd,in, ext->x_scn.x_nlinno)
 115 #endif
 116 #ifndef GET_LINENO_LNNO
 117 #define GET_LINENO_LNNO(abfd, ext) \
 118   H_GET_16 (abfd, ext->l_lnno);
 119 #endif
 120 #ifndef PUT_LINENO_LNNO
 121 #define PUT_LINENO_LNNO(abfd, val, ext) \
 122   H_PUT_16(abfd,val, ext->l_lnno);
 123 #endif
 124
 125 /* The f_symptr field in the filehdr is sometimes 64 bits.  */
 126 #ifndef GET_FILEHDR_SYMPTR
 127 #define GET_FILEHDR_SYMPTR H_GET_32
 128 #endif
 129 #ifndef PUT_FILEHDR_SYMPTR
 130 #define PUT_FILEHDR_SYMPTR H_PUT_32
 131 #endif
 132
 133 /* Some fields in the aouthdr are sometimes 64 bits.  */
 134 #ifndef GET_AOUTHDR_TSIZE
 135 #define GET_AOUTHDR_TSIZE H_GET_32
 136 #endif
 137 #ifndef PUT_AOUTHDR_TSIZE
 138 #define PUT_AOUTHDR_TSIZE H_PUT_32
 139 #endif
 140 #ifndef GET_AOUTHDR_DSIZE
 141 #define GET_AOUTHDR_DSIZE H_GET_32
 142 #endif
 143 #ifndef PUT_AOUTHDR_DSIZE
 144 #define PUT_AOUTHDR_DSIZE H_PUT_32
 145 #endif
 146 #ifndef GET_AOUTHDR_BSIZE
 147 #define GET_AOUTHDR_BSIZE H_GET_32
 148 #endif
 149 #ifndef PUT_AOUTHDR_BSIZE
 150 #define PUT_AOUTHDR_BSIZE H_PUT_32
 151 #endif
 152 #ifndef GET_AOUTHDR_ENTRY
 153 #define GET_AOUTHDR_ENTRY H_GET_32
 154 #endif
 155 #ifndef PUT_AOUTHDR_ENTRY
 156 #define PUT_AOUTHDR_ENTRY H_PUT_32
 157 #endif
 158 #ifndef GET_AOUTHDR_TEXT_START
 159 #define GET_AOUTHDR_TEXT_START H_GET_32
 160 #endif
 161 #ifndef PUT_AOUTHDR_TEXT_START
 162 #define PUT_AOUTHDR_TEXT_START H_PUT_32
 163 #endif
 164 #ifndef GET_AOUTHDR_DATA_START
 165 #define GET_AOUTHDR_DATA_START H_GET_32
 166 #endif
 167 #ifndef PUT_AOUTHDR_DATA_START
 168 #define PUT_AOUTHDR_DATA_START H_PUT_32
 169 #endif
 170
 171 /* Some fields in the scnhdr are sometimes 64 bits.  */
 172 #ifndef GET_SCNHDR_PADDR
 173 #define GET_SCNHDR_PADDR H_GET_32
 174 #endif
 175 #ifndef PUT_SCNHDR_PADDR
 176 #define PUT_SCNHDR_PADDR H_PUT_32
 177 #endif
 178 #ifndef GET_SCNHDR_VADDR
 179 #define GET_SCNHDR_VADDR H_GET_32
 180 #endif
 181 #ifndef PUT_SCNHDR_VADDR
 182 #define PUT_SCNHDR_VADDR H_PUT_32
 183 #endif
 184 #ifndef GET_SCNHDR_SIZE
 185 #define GET_SCNHDR_SIZE H_GET_32
 186 #endif
 187 #ifndef PUT_SCNHDR_SIZE
 188 #define PUT_SCNHDR_SIZE H_PUT_32
 189 #endif
 190 #ifndef GET_SCNHDR_SCNPTR
 191 #define GET_SCNHDR_SCNPTR H_GET_32
 192 #endif
 193 #ifndef PUT_SCNHDR_SCNPTR
 194 #define PUT_SCNHDR_SCNPTR H_PUT_32
 195 #endif
 196 #ifndef GET_SCNHDR_RELPTR
 197 #define GET_SCNHDR_RELPTR H_GET_32
 198 #endif
 199 #ifndef PUT_SCNHDR_RELPTR
 200 #define PUT_SCNHDR_RELPTR H_PUT_32
 201 #endif
 202 #ifndef GET_SCNHDR_LNNOPTR
 203 #define GET_SCNHDR_LNNOPTR H_GET_32
 204 #endif
 205 #ifndef PUT_SCNHDR_LNNOPTR
 206 #define PUT_SCNHDR_LNNOPTR H_PUT_32
 207 #endif
 208
 209 #ifdef COFF_WITH_pex64
 210
 211 #define GET_OPTHDR_IMAGE_BASE            H_GET_64
 212 #define PUT_OPTHDR_IMAGE_BASE            H_PUT_64
 213 #define GET_OPTHDR_SIZE_OF_STACK_RESERVE H_GET_64
 214 #define PUT_OPTHDR_SIZE_OF_STACK_RESERVE H_PUT_64
 215 #define GET_OPTHDR_SIZE_OF_STACK_COMMIT  H_GET_64
 216 #define PUT_OPTHDR_SIZE_OF_STACK_COMMIT  H_PUT_64
 217 #define GET_OPTHDR_SIZE_OF_HEAP_RESERVE  H_GET_64
 218 #define PUT_OPTHDR_SIZE_OF_HEAP_RESERVE  H_PUT_64
 219 #define GET_OPTHDR_SIZE_OF_HEAP_COMMIT   H_GET_64
 220 #define PUT_OPTHDR_SIZE_OF_HEAP_COMMIT   H_PUT_64
 221 #define GET_PDATA_ENTRY                  bfd_get_32
 222
 223 #define _bfd_XX_bfd_copy_private_bfd_data_common        _bfd_pex64_bfd_copy_private_bfd_data_common
 224 #define _bfd_XX_bfd_copy_private_section_data           _bfd_pex64_bfd_copy_private_section_data
 225 #define _bfd_XX_get_symbol_info                         _bfd_pex64_get_symbol_info
 226 #define _bfd_XX_only_swap_filehdr_out                   _bfd_pex64_only_swap_filehdr_out
 227 #define _bfd_XX_print_private_bfd_data_common           _bfd_pex64_print_private_bfd_data_common
 228 #define _bfd_XXi_final_link_postscript                  _bfd_pex64i_final_link_postscript
 229 #define _bfd_XXi_only_swap_filehdr_out                  _bfd_pex64i_only_swap_filehdr_out
 230 #define _bfd_XXi_swap_aouthdr_in                        _bfd_pex64i_swap_aouthdr_in
 231 #define _bfd_XXi_swap_aouthdr_out                       _bfd_pex64i_swap_aouthdr_out
 232 #define _bfd_XXi_swap_aux_in                            _bfd_pex64i_swap_aux_in
 233 #define _bfd_XXi_swap_aux_out                           _bfd_pex64i_swap_aux_out
 234 #define _bfd_XXi_swap_lineno_in                         _bfd_pex64i_swap_lineno_in
 235 #define _bfd_XXi_swap_lineno_out                        _bfd_pex64i_swap_lineno_out
 236 #define _bfd_XXi_swap_scnhdr_out                        _bfd_pex64i_swap_scnhdr_out
 237 #define _bfd_XXi_swap_sym_in                            _bfd_pex64i_swap_sym_in
 238 #define _bfd_XXi_swap_sym_out                           _bfd_pex64i_swap_sym_out
 239
 240 #elif defined COFF_WITH_pep
 241
 242 #define GET_OPTHDR_IMAGE_BASE H_GET_64
 243 #define PUT_OPTHDR_IMAGE_BASE H_PUT_64
 244 #define GET_OPTHDR_SIZE_OF_STACK_RESERVE H_GET_64
 245 #define PUT_OPTHDR_SIZE_OF_STACK_RESERVE H_PUT_64
 246 #define GET_OPTHDR_SIZE_OF_STACK_COMMIT H_GET_64
 247 #define PUT_OPTHDR_SIZE_OF_STACK_COMMIT H_PUT_64
 248 #define GET_OPTHDR_SIZE_OF_HEAP_RESERVE H_GET_64
 249 #define PUT_OPTHDR_SIZE_OF_HEAP_RESERVE H_PUT_64
 250 #define GET_OPTHDR_SIZE_OF_HEAP_COMMIT H_GET_64
 251 #define PUT_OPTHDR_SIZE_OF_HEAP_COMMIT H_PUT_64
 252 #define GET_PDATA_ENTRY bfd_get_64
 253
 254 #define _bfd_XX_bfd_copy_private_bfd_data_common        _bfd_pep_bfd_copy_private_bfd_data_common
 255 #define _bfd_XX_bfd_copy_private_section_data           _bfd_pep_bfd_copy_private_section_data
 256 #define _bfd_XX_get_symbol_info                         _bfd_pep_get_symbol_info
 257 #define _bfd_XX_only_swap_filehdr_out                   _bfd_pep_only_swap_filehdr_out
 258 #define _bfd_XX_print_private_bfd_data_common           _bfd_pep_print_private_bfd_data_common
 259 #define _bfd_XXi_final_link_postscript                  _bfd_pepi_final_link_postscript
 260 #define _bfd_XXi_only_swap_filehdr_out                  _bfd_pepi_only_swap_filehdr_out
 261 #define _bfd_XXi_swap_aouthdr_in                        _bfd_pepi_swap_aouthdr_in
 262 #define _bfd_XXi_swap_aouthdr_out                       _bfd_pepi_swap_aouthdr_out
 263 #define _bfd_XXi_swap_aux_in                            _bfd_pepi_swap_aux_in
 264 #define _bfd_XXi_swap_aux_out                           _bfd_pepi_swap_aux_out
 265 #define _bfd_XXi_swap_lineno_in                         _bfd_pepi_swap_lineno_in
 266 #define _bfd_XXi_swap_lineno_out                        _bfd_pepi_swap_lineno_out
 267 #define _bfd_XXi_swap_scnhdr_out                        _bfd_pepi_swap_scnhdr_out
 268 #define _bfd_XXi_swap_sym_in                            _bfd_pepi_swap_sym_in
 269 #define _bfd_XXi_swap_sym_out                           _bfd_pepi_swap_sym_out
 270
 271 #else /* !COFF_WITH_pep */
 272
 273 #define GET_OPTHDR_IMAGE_BASE H_GET_32
 274 #define PUT_OPTHDR_IMAGE_BASE H_PUT_32
 275 #define GET_OPTHDR_SIZE_OF_STACK_RESERVE H_GET_32
 276 #define PUT_OPTHDR_SIZE_OF_STACK_RESERVE H_PUT_32
 277 #define GET_OPTHDR_SIZE_OF_STACK_COMMIT H_GET_32
 278 #define PUT_OPTHDR_SIZE_OF_STACK_COMMIT H_PUT_32
 279 #define GET_OPTHDR_SIZE_OF_HEAP_RESERVE H_GET_32
 280 #define PUT_OPTHDR_SIZE_OF_HEAP_RESERVE H_PUT_32
 281 #define GET_OPTHDR_SIZE_OF_HEAP_COMMIT H_GET_32
 282 #define PUT_OPTHDR_SIZE_OF_HEAP_COMMIT H_PUT_32
 283 #define GET_PDATA_ENTRY bfd_get_32
 284
 285 #define _bfd_XX_bfd_copy_private_bfd_data_common        _bfd_pe_bfd_copy_private_bfd_data_common
 286 #define _bfd_XX_bfd_copy_private_section_data           _bfd_pe_bfd_copy_private_section_data
 287 #define _bfd_XX_get_symbol_info                         _bfd_pe_get_symbol_info
 288 #define _bfd_XX_only_swap_filehdr_out                   _bfd_pe_only_swap_filehdr_out
 289 #define _bfd_XX_print_private_bfd_data_common           _bfd_pe_print_private_bfd_data_common
 290 #define _bfd_XXi_final_link_postscript                  _bfd_pei_final_link_postscript
 291 #define _bfd_XXi_only_swap_filehdr_out                  _bfd_pei_only_swap_filehdr_out
 292 #define _bfd_XXi_swap_aouthdr_in                        _bfd_pei_swap_aouthdr_in
 293 #define _bfd_XXi_swap_aouthdr_out                       _bfd_pei_swap_aouthdr_out
 294 #define _bfd_XXi_swap_aux_in                            _bfd_pei_swap_aux_in
 295 #define _bfd_XXi_swap_aux_out                           _bfd_pei_swap_aux_out
 296 #define _bfd_XXi_swap_lineno_in                         _bfd_pei_swap_lineno_in
 297 #define _bfd_XXi_swap_lineno_out                        _bfd_pei_swap_lineno_out
 298 #define _bfd_XXi_swap_scnhdr_out                        _bfd_pei_swap_scnhdr_out
 299 #define _bfd_XXi_swap_sym_in                            _bfd_pei_swap_sym_in
 300 #define _bfd_XXi_swap_sym_out                           _bfd_pei_swap_sym_out
 301
 302 #endif /* !COFF_WITH_pep */
 303
 304 /* Returns true if the target is a PE executable target.  */
 305 #define bfd_target_pei_p(xvec)                          \
 306   (CONST_STRNEQ ((xvec)->name, "pei-"))
 307
 308 /* Return the arch string of a PE executable target.  */
 309 #define bfd_target_pei_arch(xvec)                               \
 310   ((xvec)->name + sizeof ("pei-") - 1)
 311
 312 /* Returns true if the target is an EFI target.  */
 313 #define bfd_target_efi_p(xvec)                          \
 314    (CONST_STRNEQ ((xvec)->name, "efi-app-"))
 315
 316 /* Return the arch string of an EFI target.  */
 317 #define bfd_target_efi_arch(xvec)                               \
 318   ((xvec)->name + sizeof ("efi-app-") - 1)
 319
 320 /* Macro: Returns true if the bfd is a PE executable as opposed to a
 321    PE object file.  */
 322 #define bfd_pe_executable_p(abfd)                       \
 323   (bfd_target_pei_p ((abfd)->xvec)                      \
 324    || bfd_target_efi_p ((abfd)->xvec))
 325
 326 /* These functions are architecture dependent, and are in peicode.h:
 327    coff_swap_reloc_in
 328    int coff_swap_reloc_out
 329    coff_swap_filehdr_in
 330    coff_swap_scnhdr_in
 331    pe_mkobject
 332    pe_mkobject_hook  */
 333
 334 /* The functions described below are common across all PE/PEI
 335    implementations architecture types, and actually appear in
 336    peigen.c.  */
 337
 338 #define coff_swap_sym_in      _bfd_XXi_swap_sym_in
 339 #define coff_swap_sym_out     _bfd_XXi_swap_sym_out
 340 #define coff_swap_aux_in      _bfd_XXi_swap_aux_in
 341 #define coff_swap_aux_out     _bfd_XXi_swap_aux_out
 342 #define coff_swap_lineno_in   _bfd_XXi_swap_lineno_in
 343 #define coff_swap_lineno_out  _bfd_XXi_swap_lineno_out
 344 #define coff_swap_aouthdr_in  _bfd_XXi_swap_aouthdr_in
 345 #define coff_swap_aouthdr_out _bfd_XXi_swap_aouthdr_out
 346 #define coff_swap_scnhdr_out  _bfd_XXi_swap_scnhdr_out
 347
 348 #ifndef coff_final_link_postscript
 349 #define coff_final_link_postscript _bfd_XXi_final_link_postscript
 350 #endif
 351
 352 void        _bfd_XXi_swap_sym_in (bfd *, void *, void *);
 353 unsigned    _bfd_XXi_swap_sym_out (bfd *, void *, void *);
 354 void        _bfd_XXi_swap_aux_in (bfd *, void *, int, int, int, int, void *);
 355 unsigned    _bfd_XXi_swap_aux_out (bfd *, void *, int, int, int, int, void *);
 356 void        _bfd_XXi_swap_lineno_in (bfd *, void *, void *);
 357 unsigned    _bfd_XXi_swap_lineno_out (bfd *, void *, void *);
 358 void        _bfd_XXi_swap_aouthdr_in (bfd *, void *, void *);
 359 unsigned    _bfd_XXi_swap_aouthdr_out (bfd *, void *, void *);
 360 unsigned    _bfd_XXi_swap_scnhdr_out (bfd *, void *, void *);
 361 bfd_boolean _bfd_XX_print_private_bfd_data_common (bfd *, void *);
 362 bfd_boolean _bfd_XX_bfd_copy_private_bfd_data_common (bfd *, bfd *);
 363 void        _bfd_XX_get_symbol_info (bfd *, asymbol *, symbol_info *);
 364 bfd_boolean _bfd_XXi_final_link_postscript (bfd *, struct coff_final_link_info *);
 365
 366 /* The following are needed only for ONE of pe or pei, but don't
 367    otherwise vary; peicode.h fixes up ifdefs but we provide the
 368    prototype.  */
 369
 370 unsigned    _bfd_XX_only_swap_filehdr_out  (bfd *, void *, void *);
 371 unsigned    _bfd_XXi_only_swap_filehdr_out (bfd *, void *, void *);
 372 bfd_boolean _bfd_XX_bfd_copy_private_section_data (bfd *, asection *, bfd *, asection *);
 373