/* BFD back-end for Intel 386 COFF files (DJGPP variant with a stub).
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/* BFD back-end for Intel 386 COFF files (DJGPP variant with a stub).
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Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2006, 2007, 2009,
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Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2006, 2007, 2009,
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2011 Free Software Foundation, Inc.
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2011 Free Software Foundation, Inc.
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Written by Robert Hoehne.
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Written by Robert Hoehne.
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This file is part of BFD, the Binary File Descriptor library.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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/* This file handles now also stubbed coff images. The stub is a small
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/* This file handles now also stubbed coff images. The stub is a small
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DOS executable program before the coff image to load it in memory
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DOS executable program before the coff image to load it in memory
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and execute it. This is needed, because DOS cannot run coff files.
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and execute it. This is needed, because DOS cannot run coff files.
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All the functions below are called by the corresponding functions
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All the functions below are called by the corresponding functions
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from coffswap.h.
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from coffswap.h.
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The only thing what they do is to adjust the information stored in
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The only thing what they do is to adjust the information stored in
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the COFF file which are offset into the file.
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the COFF file which are offset into the file.
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This is needed, because DJGPP uses a very special way to load and run
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This is needed, because DJGPP uses a very special way to load and run
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the coff image. It loads the image in memory and assumes then, that the
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the coff image. It loads the image in memory and assumes then, that the
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image had no stub by using the filepointers as pointers in the coff
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image had no stub by using the filepointers as pointers in the coff
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image and NOT in the file.
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image and NOT in the file.
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To be compatible with any existing executables I have fixed this
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To be compatible with any existing executables I have fixed this
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here and NOT in the DJGPP startup code. */
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here and NOT in the DJGPP startup code. */
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#define TARGET_SYM go32stubbedcoff_vec
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#define TARGET_SYM go32stubbedcoff_vec
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#define TARGET_NAME "coff-go32-exe"
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#define TARGET_NAME "coff-go32-exe"
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#define TARGET_UNDERSCORE '_'
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#define TARGET_UNDERSCORE '_'
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#define COFF_GO32_EXE
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#define COFF_GO32_EXE
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#define COFF_LONG_SECTION_NAMES
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#define COFF_LONG_SECTION_NAMES
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#define COFF_SUPPORT_GNU_LINKONCE
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#define COFF_SUPPORT_GNU_LINKONCE
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#define COFF_LONG_FILENAMES
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#define COFF_LONG_FILENAMES
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#define COFF_SECTION_ALIGNMENT_ENTRIES \
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#define COFF_SECTION_ALIGNMENT_ENTRIES \
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{ COFF_SECTION_NAME_EXACT_MATCH (".data"), \
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{ COFF_SECTION_NAME_EXACT_MATCH (".data"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_EXACT_MATCH (".text"), \
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{ COFF_SECTION_NAME_EXACT_MATCH (".text"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 4 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi"), \
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{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi"), \
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
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COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
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#include "bfd.h"
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#include "bfd.h"
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/* At first the prototypes. */
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/* At first the prototypes. */
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static void
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static void
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adjust_filehdr_in_post PARAMS ((bfd *, PTR, PTR));
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adjust_filehdr_in_post PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_filehdr_out_pre PARAMS ((bfd *, PTR, PTR));
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adjust_filehdr_out_pre PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_filehdr_out_post PARAMS ((bfd *, PTR, PTR));
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adjust_filehdr_out_post PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_scnhdr_in_post PARAMS ((bfd *, PTR, PTR));
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adjust_scnhdr_in_post PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_scnhdr_out_pre PARAMS ((bfd *, PTR, PTR));
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adjust_scnhdr_out_pre PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_scnhdr_out_post PARAMS ((bfd *, PTR, PTR));
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adjust_scnhdr_out_post PARAMS ((bfd *, PTR, PTR));
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static void
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static void
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adjust_aux_in_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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adjust_aux_in_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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static void
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static void
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adjust_aux_out_pre PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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adjust_aux_out_pre PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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static void
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static void
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adjust_aux_out_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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adjust_aux_out_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
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static void
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static void
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create_go32_stub PARAMS ((bfd *));
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create_go32_stub PARAMS ((bfd *));
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/* All that ..._PRE and ...POST functions are called from the corresponding
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/* All that ..._PRE and ...POST functions are called from the corresponding
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coff_swap... functions. The ...PRE functions are called at the beginning
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coff_swap... functions. The ...PRE functions are called at the beginning
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of the function and the ...POST functions at the end of the swap routines. */
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of the function and the ...POST functions at the end of the swap routines. */
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#define COFF_ADJUST_FILEHDR_IN_POST adjust_filehdr_in_post
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#define COFF_ADJUST_FILEHDR_IN_POST adjust_filehdr_in_post
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#define COFF_ADJUST_FILEHDR_OUT_PRE adjust_filehdr_out_pre
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#define COFF_ADJUST_FILEHDR_OUT_PRE adjust_filehdr_out_pre
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#define COFF_ADJUST_FILEHDR_OUT_POST adjust_filehdr_out_post
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#define COFF_ADJUST_FILEHDR_OUT_POST adjust_filehdr_out_post
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#define COFF_ADJUST_SCNHDR_IN_POST adjust_scnhdr_in_post
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#define COFF_ADJUST_SCNHDR_IN_POST adjust_scnhdr_in_post
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#define COFF_ADJUST_SCNHDR_OUT_PRE adjust_scnhdr_out_pre
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#define COFF_ADJUST_SCNHDR_OUT_PRE adjust_scnhdr_out_pre
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#define COFF_ADJUST_SCNHDR_OUT_POST adjust_scnhdr_out_post
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#define COFF_ADJUST_SCNHDR_OUT_POST adjust_scnhdr_out_post
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#define COFF_ADJUST_AUX_IN_POST adjust_aux_in_post
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#define COFF_ADJUST_AUX_IN_POST adjust_aux_in_post
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#define COFF_ADJUST_AUX_OUT_PRE adjust_aux_out_pre
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#define COFF_ADJUST_AUX_OUT_PRE adjust_aux_out_pre
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#define COFF_ADJUST_AUX_OUT_POST adjust_aux_out_post
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#define COFF_ADJUST_AUX_OUT_POST adjust_aux_out_post
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static const bfd_target *go32_check_format (bfd *abfd);
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#define COFF_CHECK_FORMAT go32_check_format
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static bfd_boolean
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static bfd_boolean
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go32_stubbed_coff_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
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go32_stubbed_coff_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
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#define coff_bfd_copy_private_bfd_data go32_stubbed_coff_bfd_copy_private_bfd_data
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#define coff_bfd_copy_private_bfd_data go32_stubbed_coff_bfd_copy_private_bfd_data
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#include "coff-i386.c"
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#include "coff-i386.c"
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/* This macro is used, because I cannot assume the endianness of the
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/* This macro is used, because I cannot assume the endianness of the
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host system. */
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host system. */
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#define _H(index) (H_GET_16 (abfd, (header + index * 2)))
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#define _H(index) (H_GET_16 (abfd, (header + index * 2)))
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/* These bytes are a 2048-byte DOS executable, which loads the COFF
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/* These bytes are a 2048-byte DOS executable, which loads the COFF
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image into memory and then runs it. It is called 'stub'. */
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image into memory and then runs it. It is called 'stub'. */
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static const unsigned char stub_bytes[GO32_STUBSIZE] =
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static const unsigned char stub_bytes[GO32_STUBSIZE] =
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{
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{
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#include "go32stub.h"
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#include "go32stub.h"
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};
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};
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/*
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/*
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I have not commented each swap function below, because the
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I have not commented each swap function below, because the
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technique is in any function the same. For the ...in function,
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technique is in any function the same. For the ...in function,
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all the pointers are adjusted by adding GO32_STUBSIZE and for the
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all the pointers are adjusted by adding GO32_STUBSIZE and for the
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...out function, it is subtracted first and after calling the
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...out function, it is subtracted first and after calling the
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standard swap function it is reset to the old value. */
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standard swap function it is reset to the old value. */
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/* This macro is used for adjusting the filepointers, which
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/* This macro is used for adjusting the filepointers, which
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is done only, if the pointer is nonzero. */
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is done only, if the pointer is nonzero. */
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#define ADJUST_VAL(val,diff) \
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#define ADJUST_VAL(val,diff) \
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if (val != 0) val += diff
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if (val != 0) val += diff
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static void
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static void
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adjust_filehdr_in_post (abfd, src, dst)
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adjust_filehdr_in_post (abfd, src, dst)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd *abfd ATTRIBUTE_UNUSED;
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PTR src;
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PTR src;
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PTR dst;
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PTR dst;
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{
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{
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FILHDR *filehdr_src = (FILHDR *) src;
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FILHDR *filehdr_src = (FILHDR *) src;
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struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
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struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
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ADJUST_VAL (filehdr_dst->f_symptr, GO32_STUBSIZE);
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ADJUST_VAL (filehdr_dst->f_symptr, GO32_STUBSIZE);
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/* Save now the stub to be used later. Put the stub data to FILEHDR_DST
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/* Save now the stub to be used later. Put the stub data to FILEHDR_DST
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first as coff_data (abfd) still does not exist. It may not even be ever
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first as coff_data (abfd) still does not exist. It may not even be ever
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created as we are just checking the file format of ABFD. */
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created as we are just checking the file format of ABFD. */
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memcpy (filehdr_dst->go32stub, filehdr_src->stub, GO32_STUBSIZE);
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memcpy (filehdr_dst->go32stub, filehdr_src->stub, GO32_STUBSIZE);
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filehdr_dst->f_flags |= F_GO32STUB;
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filehdr_dst->f_flags |= F_GO32STUB;
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}
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}
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static void
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static void
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adjust_filehdr_out_pre (abfd, in, out)
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adjust_filehdr_out_pre (abfd, in, out)
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bfd *abfd;
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bfd *abfd;
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PTR in;
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PTR in;
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PTR out;
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PTR out;
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{
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{
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struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
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struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
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FILHDR *filehdr_out = (FILHDR *) out;
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FILHDR *filehdr_out = (FILHDR *) out;
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/* Generate the stub. */
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/* Generate the stub. */
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create_go32_stub (abfd);
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create_go32_stub (abfd);
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/* Copy the stub to the file header. */
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/* Copy the stub to the file header. */
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if (coff_data (abfd)->go32stub != NULL)
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if (coff_data (abfd)->go32stub != NULL)
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memcpy (filehdr_out->stub, coff_data (abfd)->go32stub, GO32_STUBSIZE);
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memcpy (filehdr_out->stub, coff_data (abfd)->go32stub, GO32_STUBSIZE);
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else
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else
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/* Use the default. */
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/* Use the default. */
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memcpy (filehdr_out->stub, stub_bytes, GO32_STUBSIZE);
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memcpy (filehdr_out->stub, stub_bytes, GO32_STUBSIZE);
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ADJUST_VAL (filehdr_in->f_symptr, -GO32_STUBSIZE);
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ADJUST_VAL (filehdr_in->f_symptr, -GO32_STUBSIZE);
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}
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}
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static void
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static void
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adjust_filehdr_out_post (abfd, in, out)
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adjust_filehdr_out_post (abfd, in, out)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd *abfd ATTRIBUTE_UNUSED;
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PTR in;
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PTR in;
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PTR out ATTRIBUTE_UNUSED;
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PTR out ATTRIBUTE_UNUSED;
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{
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{
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struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
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struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
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/* Undo the above change. */
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/* Undo the above change. */
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ADJUST_VAL (filehdr_in->f_symptr, GO32_STUBSIZE);
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ADJUST_VAL (filehdr_in->f_symptr, GO32_STUBSIZE);
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}
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}
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static void
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static void
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adjust_scnhdr_in_post (abfd, ext, in)
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adjust_scnhdr_in_post (abfd, ext, in)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd *abfd ATTRIBUTE_UNUSED;
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PTR ext ATTRIBUTE_UNUSED;
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PTR ext ATTRIBUTE_UNUSED;
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PTR in;
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PTR in;
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{
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{
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
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}
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}
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static void
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static void
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adjust_scnhdr_out_pre (abfd, in, out)
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adjust_scnhdr_out_pre (abfd, in, out)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd *abfd ATTRIBUTE_UNUSED;
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PTR in;
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PTR in;
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PTR out ATTRIBUTE_UNUSED;
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PTR out ATTRIBUTE_UNUSED;
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{
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{
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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ADJUST_VAL (scnhdr_int->s_scnptr, -GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_scnptr, -GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, -GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, -GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, -GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, -GO32_STUBSIZE);
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}
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}
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|
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static void
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static void
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adjust_scnhdr_out_post (abfd, in, out)
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adjust_scnhdr_out_post (abfd, in, out)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd *abfd ATTRIBUTE_UNUSED;
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PTR in;
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PTR in;
|
PTR out ATTRIBUTE_UNUSED;
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PTR out ATTRIBUTE_UNUSED;
|
{
|
{
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
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struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
|
|
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ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
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ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
|
}
|
}
|
|
|
static void
|
static void
|
adjust_aux_in_post (abfd, ext1, type, in_class, indx, numaux, in1)
|
adjust_aux_in_post (abfd, ext1, type, in_class, indx, numaux, in1)
|
bfd *abfd ATTRIBUTE_UNUSED;
|
bfd *abfd ATTRIBUTE_UNUSED;
|
PTR ext1 ATTRIBUTE_UNUSED;
|
PTR ext1 ATTRIBUTE_UNUSED;
|
int type;
|
int type;
|
int in_class;
|
int in_class;
|
int indx ATTRIBUTE_UNUSED;
|
int indx ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
PTR in1;
|
PTR in1;
|
{
|
{
|
union internal_auxent *in = (union internal_auxent *) in1;
|
union internal_auxent *in = (union internal_auxent *) in1;
|
|
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
|| ISTAG (in_class))
|
|| ISTAG (in_class))
|
{
|
{
|
ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
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ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
adjust_aux_out_pre (abfd, inp, type, in_class, indx, numaux, extp)
|
adjust_aux_out_pre (abfd, inp, type, in_class, indx, numaux, extp)
|
bfd *abfd ATTRIBUTE_UNUSED;
|
bfd *abfd ATTRIBUTE_UNUSED;
|
PTR inp;
|
PTR inp;
|
int type;
|
int type;
|
int in_class;
|
int in_class;
|
int indx ATTRIBUTE_UNUSED;
|
int indx ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
PTR extp ATTRIBUTE_UNUSED;
|
PTR extp ATTRIBUTE_UNUSED;
|
{
|
{
|
union internal_auxent *in = (union internal_auxent *) inp;
|
union internal_auxent *in = (union internal_auxent *) inp;
|
|
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
|| ISTAG (in_class))
|
|| ISTAG (in_class))
|
{
|
{
|
ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, -GO32_STUBSIZE);
|
ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, -GO32_STUBSIZE);
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
adjust_aux_out_post (abfd, inp, type, in_class, indx, numaux, extp)
|
adjust_aux_out_post (abfd, inp, type, in_class, indx, numaux, extp)
|
bfd *abfd ATTRIBUTE_UNUSED;
|
bfd *abfd ATTRIBUTE_UNUSED;
|
PTR inp;
|
PTR inp;
|
int type;
|
int type;
|
int in_class;
|
int in_class;
|
int indx ATTRIBUTE_UNUSED;
|
int indx ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
int numaux ATTRIBUTE_UNUSED;
|
PTR extp ATTRIBUTE_UNUSED;
|
PTR extp ATTRIBUTE_UNUSED;
|
{
|
{
|
union internal_auxent *in = (union internal_auxent *) inp;
|
union internal_auxent *in = (union internal_auxent *) inp;
|
|
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
|
|| ISTAG (in_class))
|
|| ISTAG (in_class))
|
{
|
{
|
ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
|
ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
|
}
|
}
|
}
|
}
|
|
|
/* That's the function, which creates the stub. There are
|
/* That's the function, which creates the stub. There are
|
different cases from where the stub is taken.
|
different cases from where the stub is taken.
|
At first the environment variable $(GO32STUB) is checked and then
|
At first the environment variable $(GO32STUB) is checked and then
|
$(STUB) if it was not set.
|
$(STUB) if it was not set.
|
If it exists and points to a valid stub the stub is taken from
|
If it exists and points to a valid stub the stub is taken from
|
that file. This file can be also a whole executable file, because
|
that file. This file can be also a whole executable file, because
|
the stub is computed from the exe information at the start of that
|
the stub is computed from the exe information at the start of that
|
file.
|
file.
|
|
|
If there was any error, the standard stub (compiled in this file)
|
If there was any error, the standard stub (compiled in this file)
|
is taken. */
|
is taken. */
|
|
|
static void
|
static void
|
create_go32_stub (abfd)
|
create_go32_stub (abfd)
|
bfd *abfd;
|
bfd *abfd;
|
{
|
{
|
/* Do it only once. */
|
/* Do it only once. */
|
if (coff_data (abfd)->go32stub == NULL)
|
if (coff_data (abfd)->go32stub == NULL)
|
{
|
{
|
char *stub;
|
char *stub;
|
struct stat st;
|
struct stat st;
|
int f;
|
int f;
|
unsigned char header[10];
|
unsigned char header[10];
|
char magic[8];
|
char magic[8];
|
unsigned long coff_start;
|
unsigned long coff_start;
|
long exe_start;
|
long exe_start;
|
|
|
/* Check at first the environment variable $(GO32STUB). */
|
/* Check at first the environment variable $(GO32STUB). */
|
stub = getenv ("GO32STUB");
|
stub = getenv ("GO32STUB");
|
/* Now check the environment variable $(STUB). */
|
/* Now check the environment variable $(STUB). */
|
if (stub == NULL)
|
if (stub == NULL)
|
stub = getenv ("STUB");
|
stub = getenv ("STUB");
|
if (stub == NULL)
|
if (stub == NULL)
|
goto stub_end;
|
goto stub_end;
|
if (stat (stub, &st) != 0)
|
if (stat (stub, &st) != 0)
|
goto stub_end;
|
goto stub_end;
|
#ifdef O_BINARY
|
#ifdef O_BINARY
|
f = open (stub, O_RDONLY | O_BINARY);
|
f = open (stub, O_RDONLY | O_BINARY);
|
#else
|
#else
|
f = open (stub, O_RDONLY);
|
f = open (stub, O_RDONLY);
|
#endif
|
#endif
|
if (f < 0)
|
if (f < 0)
|
goto stub_end;
|
goto stub_end;
|
if (read (f, &header, sizeof (header)) < 0)
|
if (read (f, &header, sizeof (header)) < 0)
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
if (_H (0) != 0x5a4d) /* It is not an exe file. */
|
if (_H (0) != 0x5a4d) /* It is not an exe file. */
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
/* Compute the size of the stub (it is every thing up
|
/* Compute the size of the stub (it is every thing up
|
to the beginning of the coff image). */
|
to the beginning of the coff image). */
|
coff_start = (long) _H (2) * 512L;
|
coff_start = (long) _H (2) * 512L;
|
if (_H (1))
|
if (_H (1))
|
coff_start += (long) _H (1) - 512L;
|
coff_start += (long) _H (1) - 512L;
|
|
|
/* Currently there is only a fixed stub size of 2048 bytes
|
/* Currently there is only a fixed stub size of 2048 bytes
|
supported. */
|
supported. */
|
if (coff_start != 2048)
|
if (coff_start != 2048)
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
exe_start = _H (4) * 16;
|
exe_start = _H (4) * 16;
|
if ((long) lseek (f, exe_start, SEEK_SET) != exe_start)
|
if ((long) lseek (f, exe_start, SEEK_SET) != exe_start)
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
if (read (f, &magic, 8) != 8)
|
if (read (f, &magic, 8) != 8)
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
if (! CONST_STRNEQ (magic, "go32stub"))
|
if (! CONST_STRNEQ (magic, "go32stub"))
|
{
|
{
|
close (f);
|
close (f);
|
goto stub_end;
|
goto stub_end;
|
}
|
}
|
/* Now we found a correct stub (hopefully). */
|
/* Now we found a correct stub (hopefully). */
|
coff_data (abfd)->go32stub = bfd_alloc (abfd, (bfd_size_type) coff_start);
|
coff_data (abfd)->go32stub = bfd_alloc (abfd, (bfd_size_type) coff_start);
|
if (coff_data (abfd)->go32stub == NULL)
|
if (coff_data (abfd)->go32stub == NULL)
|
{
|
{
|
close (f);
|
close (f);
|
return;
|
return;
|
}
|
}
|
lseek (f, 0L, SEEK_SET);
|
lseek (f, 0L, SEEK_SET);
|
if ((unsigned long) read (f, coff_data (abfd)->go32stub, coff_start)
|
if ((unsigned long) read (f, coff_data (abfd)->go32stub, coff_start)
|
!= coff_start)
|
!= coff_start)
|
{
|
{
|
bfd_release (abfd, coff_data (abfd)->go32stub);
|
bfd_release (abfd, coff_data (abfd)->go32stub);
|
coff_data (abfd)->go32stub = NULL;
|
coff_data (abfd)->go32stub = NULL;
|
}
|
}
|
close (f);
|
close (f);
|
}
|
}
|
stub_end:
|
stub_end:
|
/* There was something wrong above, so use now the standard builtin
|
/* There was something wrong above, so use now the standard builtin
|
stub. */
|
stub. */
|
if (coff_data (abfd)->go32stub == NULL)
|
if (coff_data (abfd)->go32stub == NULL)
|
{
|
{
|
coff_data (abfd)->go32stub
|
coff_data (abfd)->go32stub
|
= bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
|
= bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
|
if (coff_data (abfd)->go32stub == NULL)
|
if (coff_data (abfd)->go32stub == NULL)
|
return;
|
return;
|
memcpy (coff_data (abfd)->go32stub, stub_bytes, GO32_STUBSIZE);
|
memcpy (coff_data (abfd)->go32stub, stub_bytes, GO32_STUBSIZE);
|
}
|
}
|
}
|
}
|
|
|
/* If ibfd was a stubbed coff image, copy the stub from that bfd
|
/* If ibfd was a stubbed coff image, copy the stub from that bfd
|
to the new obfd. */
|
to the new obfd. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
go32_stubbed_coff_bfd_copy_private_bfd_data (ibfd, obfd)
|
go32_stubbed_coff_bfd_copy_private_bfd_data (ibfd, obfd)
|
bfd *ibfd;
|
bfd *ibfd;
|
bfd *obfd;
|
bfd *obfd;
|
{
|
{
|
/* Check if both are the same targets. */
|
/* Check if both are the same targets. */
|
if (ibfd->xvec != obfd->xvec)
|
if (ibfd->xvec != obfd->xvec)
|
return TRUE;
|
return TRUE;
|
|
|
/* Check if we have a source stub. */
|
/* Check if we have a source stub. */
|
if (coff_data (ibfd)->go32stub == NULL)
|
if (coff_data (ibfd)->go32stub == NULL)
|
return TRUE;
|
return TRUE;
|
|
|
/* As adjust_filehdr_out_pre may get called only after this function,
|
/* As adjust_filehdr_out_pre may get called only after this function,
|
optionally allocate the output stub. */
|
optionally allocate the output stub. */
|
if (coff_data (obfd)->go32stub == NULL)
|
if (coff_data (obfd)->go32stub == NULL)
|
coff_data (obfd)->go32stub = bfd_alloc (obfd,
|
coff_data (obfd)->go32stub = bfd_alloc (obfd,
|
(bfd_size_type) GO32_STUBSIZE);
|
(bfd_size_type) GO32_STUBSIZE);
|
|
|
/* Now copy the stub. */
|
/* Now copy the stub. */
|
if (coff_data (obfd)->go32stub != NULL)
|
if (coff_data (obfd)->go32stub != NULL)
|
memcpy (coff_data (obfd)->go32stub, coff_data (ibfd)->go32stub,
|
memcpy (coff_data (obfd)->go32stub, coff_data (ibfd)->go32stub,
|
GO32_STUBSIZE);
|
GO32_STUBSIZE);
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
|
/* coff_object_p only checks 2 bytes F_MAGIC at GO32_STUBSIZE inside the file
|
|
which is too fragile. */
|
|
|
|
static const bfd_target *
|
|
go32_check_format (bfd *abfd)
|
|
{
|
|
char mz[2];
|
|
|
|
if (bfd_bread (mz, 2, abfd) != 2 || mz[0] != 'M' || mz[1] != 'Z')
|
|
{
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
|
|
return NULL;
|
|
|
|
return coff_object_p (abfd);
|
|
}
|
|
|
No newline at end of file
|
No newline at end of file
|
