bfd/libpei.h

   1 /* Support for the generic parts of PE/PEI; common header information.
   2    Copyright 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
   3    Written by Cygnus Solutions.
   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 02111-1307, USA.  */
  20
  21 /*
  22 Most of this hacked by  Steve Chamberlain,
  23                         sac@cygnus.com
  24
  25 PE/PEI rearrangement (and code added): Donn Terry
  26                                        Softway Systems, Inc.
  27 */
  28
  29 /* Hey look, some documentation [and in a place you expect to find it]!
  30
  31    The main reference for the pei format is "Microsoft Portable Executable
  32    and Common Object File Format Specification 4.1".  Get it if you need to
  33    do some serious hacking on this code.
  34
  35    Another reference:
  36    "Peering Inside the PE: A Tour of the Win32 Portable Executable
  37    File Format", MSJ 1994, Volume 9.
  38
  39    The *sole* difference between the pe format and the pei format is that the
  40    latter has an MSDOS 2.0 .exe header on the front that prints the message
  41    "This app must be run under Windows." (or some such).
  42    (FIXME: Whether that statement is *really* true or not is unknown.
  43    Are there more subtle differences between pe and pei formats?
  44    For now assume there aren't.  If you find one, then for God sakes
  45    document it here!)
  46
  47    The Microsoft docs use the word "image" instead of "executable" because
  48    the former can also refer to a DLL (shared library).  Confusion can arise
  49    because the `i' in `pei' also refers to "image".  The `pe' format can
  50    also create images (i.e. executables), it's just that to run on a win32
  51    system you need to use the pei format.
  52
  53    FIXME: Please add more docs here so the next poor fool that has to hack
  54    on this code has a chance of getting something accomplished without
  55    wasting too much time.
  56 */
  57
  58 #ifndef GET_FCN_LNNOPTR
  59 #define GET_FCN_LNNOPTR(abfd, ext) \
  60      bfd_h_get_32(abfd, (bfd_byte *) 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         bfd_h_get_32(abfd, (bfd_byte *) 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)  bfd_h_put_32(abfd,  in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
  70 #endif
  71 #ifndef PUT_FCN_ENDNDX
  72 #define PUT_FCN_ENDNDX(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
  73 #endif
  74 #ifndef GET_LNSZ_LNNO
  75 #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
  76 #endif
  77 #ifndef GET_LNSZ_SIZE
  78 #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
  79 #endif
  80 #ifndef PUT_LNSZ_LNNO
  81 #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_lnno)
  82 #endif
  83 #ifndef PUT_LNSZ_SIZE
  84 #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
  85 #endif
  86 #ifndef GET_SCN_SCNLEN
  87 #define GET_SCN_SCNLEN(abfd,  ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
  88 #endif
  89 #ifndef GET_SCN_NRELOC
  90 #define GET_SCN_NRELOC(abfd,  ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
  91 #endif
  92 #ifndef GET_SCN_NLINNO
  93 #define GET_SCN_NLINNO(abfd, ext)  bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
  94 #endif
  95 #ifndef PUT_SCN_SCNLEN
  96 #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
  97 #endif
  98 #ifndef PUT_SCN_NRELOC
  99 #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
 100 #endif
 101 #ifndef PUT_SCN_NLINNO
 102 #define PUT_SCN_NLINNO(abfd,in, ext)  bfd_h_put_16(abfd,in, (bfd_byte  *) ext->x_scn.x_nlinno)
 103 #endif
 104 #ifndef GET_LINENO_LNNO
 105 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
 106 #endif
 107 #ifndef PUT_LINENO_LNNO
 108 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val,  (bfd_byte *) (ext->l_lnno));
 109 #endif
 110
 111 /* The f_symptr field in the filehdr is sometimes 64 bits.  */
 112 #ifndef GET_FILEHDR_SYMPTR
 113 #define GET_FILEHDR_SYMPTR bfd_h_get_32
 114 #endif
 115 #ifndef PUT_FILEHDR_SYMPTR
 116 #define PUT_FILEHDR_SYMPTR bfd_h_put_32
 117 #endif
 118
 119 /* Some fields in the aouthdr are sometimes 64 bits.  */
 120 #ifndef GET_AOUTHDR_TSIZE
 121 #define GET_AOUTHDR_TSIZE bfd_h_get_32
 122 #endif
 123 #ifndef PUT_AOUTHDR_TSIZE
 124 #define PUT_AOUTHDR_TSIZE bfd_h_put_32
 125 #endif
 126 #ifndef GET_AOUTHDR_DSIZE
 127 #define GET_AOUTHDR_DSIZE bfd_h_get_32
 128 #endif
 129 #ifndef PUT_AOUTHDR_DSIZE
 130 #define PUT_AOUTHDR_DSIZE bfd_h_put_32
 131 #endif
 132 #ifndef GET_AOUTHDR_BSIZE
 133 #define GET_AOUTHDR_BSIZE bfd_h_get_32
 134 #endif
 135 #ifndef PUT_AOUTHDR_BSIZE
 136 #define PUT_AOUTHDR_BSIZE bfd_h_put_32
 137 #endif
 138 #ifndef GET_AOUTHDR_ENTRY
 139 #define GET_AOUTHDR_ENTRY bfd_h_get_32
 140 #endif
 141 #ifndef PUT_AOUTHDR_ENTRY
 142 #define PUT_AOUTHDR_ENTRY bfd_h_put_32
 143 #endif
 144 #ifndef GET_AOUTHDR_TEXT_START
 145 #define GET_AOUTHDR_TEXT_START bfd_h_get_32
 146 #endif
 147 #ifndef PUT_AOUTHDR_TEXT_START
 148 #define PUT_AOUTHDR_TEXT_START bfd_h_put_32
 149 #endif
 150 #ifndef GET_AOUTHDR_DATA_START
 151 #define GET_AOUTHDR_DATA_START bfd_h_get_32
 152 #endif
 153 #ifndef PUT_AOUTHDR_DATA_START
 154 #define PUT_AOUTHDR_DATA_START bfd_h_put_32
 155 #endif
 156
 157 /* Some fields in the scnhdr are sometimes 64 bits.  */
 158 #ifndef GET_SCNHDR_PADDR
 159 #define GET_SCNHDR_PADDR bfd_h_get_32
 160 #endif
 161 #ifndef PUT_SCNHDR_PADDR
 162 #define PUT_SCNHDR_PADDR bfd_h_put_32
 163 #endif
 164 #ifndef GET_SCNHDR_VADDR
 165 #define GET_SCNHDR_VADDR bfd_h_get_32
 166 #endif
 167 #ifndef PUT_SCNHDR_VADDR
 168 #define PUT_SCNHDR_VADDR bfd_h_put_32
 169 #endif
 170 #ifndef GET_SCNHDR_SIZE
 171 #define GET_SCNHDR_SIZE bfd_h_get_32
 172 #endif
 173 #ifndef PUT_SCNHDR_SIZE
 174 #define PUT_SCNHDR_SIZE bfd_h_put_32
 175 #endif
 176 #ifndef GET_SCNHDR_SCNPTR
 177 #define GET_SCNHDR_SCNPTR bfd_h_get_32
 178 #endif
 179 #ifndef PUT_SCNHDR_SCNPTR
 180 #define PUT_SCNHDR_SCNPTR bfd_h_put_32
 181 #endif
 182 #ifndef GET_SCNHDR_RELPTR
 183 #define GET_SCNHDR_RELPTR bfd_h_get_32
 184 #endif
 185 #ifndef PUT_SCNHDR_RELPTR
 186 #define PUT_SCNHDR_RELPTR bfd_h_put_32
 187 #endif
 188 #ifndef GET_SCNHDR_LNNOPTR
 189 #define GET_SCNHDR_LNNOPTR bfd_h_get_32
 190 #endif
 191 #ifndef PUT_SCNHDR_LNNOPTR
 192 #define PUT_SCNHDR_LNNOPTR bfd_h_put_32
 193 #endif
 194
 195 /* These functions are architecture dependent, and are in peicode.h:
 196    coff_swap_reloc_in
 197    int coff_swap_reloc_out
 198    coff_swap_filehdr_in
 199    coff_swap_scnhdr_in
 200    pe_mkobject
 201    pe_mkobject_hook  */
 202
 203 /* The functions described below are common across all PE/PEI
 204    implementations architecture types, and actually appear in
 205    peigen.c.  */
 206
 207 void _bfd_pei_swap_sym_in PARAMS ((bfd*, PTR, PTR));
 208 #define coff_swap_sym_in _bfd_pei_swap_sym_in
 209
 210 unsigned int _bfd_pei_swap_sym_out PARAMS ((bfd*, PTR, PTR));
 211 #define coff_swap_sym_out _bfd_pei_swap_sym_out
 212
 213 void _bfd_pei_swap_aux_in PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 214 #define coff_swap_aux_in _bfd_pei_swap_aux_in
 215
 216 unsigned int _bfd_pei_swap_aux_out \
 217   PARAMS ((bfd *, PTR, int, int, int, int, PTR));
 218 #define coff_swap_aux_out _bfd_pei_swap_aux_out
 219
 220 void _bfd_pei_swap_lineno_in PARAMS ((bfd*, PTR, PTR));
 221 #define coff_swap_lineno_in _bfd_pei_swap_lineno_in
 222
 223 unsigned int _bfd_pei_swap_lineno_out PARAMS ((bfd*, PTR, PTR));
 224 #define coff_swap_lineno_out _bfd_pei_swap_lineno_out
 225
 226 void _bfd_pei_swap_aouthdr_in PARAMS ((bfd*, PTR, PTR));
 227 #define coff_swap_aouthdr_in _bfd_pei_swap_aouthdr_in
 228
 229 unsigned int _bfd_pei_swap_aouthdr_out PARAMS ((bfd *, PTR, PTR));
 230 #define coff_swap_aouthdr_out _bfd_pei_swap_aouthdr_out
 231
 232 unsigned int _bfd_pei_swap_scnhdr_out PARAMS ((bfd *, PTR, PTR));
 233 #define coff_swap_scnhdr_out _bfd_pei_swap_scnhdr_out
 234
 235 boolean _bfd_pe_print_private_bfd_data_common PARAMS ((bfd *, PTR));
 236
 237 boolean _bfd_pe_bfd_copy_private_bfd_data_common PARAMS ((bfd *, bfd *));
 238
 239 void _bfd_pe_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
 240
 241 boolean _bfd_pei_final_link_postscript
 242   PARAMS ((bfd *, struct coff_final_link_info *));
 243 #define coff_final_link_postscript _bfd_pei_final_link_postscript
 244
 245 /* The following are needed only for ONE of pe or pei, but don't
 246    otherwise vary; peicode.h fixes up ifdefs but we provide the
 247    prototype.  */
 248
 249 unsigned int _bfd_pe_only_swap_filehdr_out PARAMS ((bfd*, PTR, PTR));
 250 unsigned int _bfd_pei_only_swap_filehdr_out PARAMS ((bfd*, PTR, PTR));
 251 boolean _bfd_pe_bfd_copy_private_section_data
 252   PARAMS ((bfd *, asection *, bfd *, asection *));