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vxworks.em revision 1.10 
      1 # This shell script emits a C file. -*- C -*-
      2 #   Copyright (C) 2006-2025 Free Software Foundation, Inc.
      3 #
      4 # This file is part of the GNU Binutils.
      5 #
      6 # This program is free software; you can redistribute it and/or modify
      7 # it under the terms of the GNU General Public License as published by
      8 # the Free Software Foundation; either version 3 of the License, or
      9 # (at your option) any later version.
     10 #
     11 # This program is distributed in the hope that it will be useful,
     12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14 # GNU General Public License for more details.
     15 #
     16 # You should have received a copy of the GNU General Public License
     17 # along with this program; if not, write to the Free Software
     18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     19 # MA 02110-1301, USA.
     20 #
     21 
     22 if test -n "$VXWORKS_BASE_EM_FILE" ; then
     23   source_em "${srcdir}/emultempl/${VXWORKS_BASE_EM_FILE}.em"
     24 fi
     25 
     26 fragment <<EOF
     27 
     28 static int force_dynamic;
     29 
     30 static void
     31 vxworks_before_parse (void)
     32 {
     33   ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse} ();
     34   config.rpath_separator = ';';
     35 }
     36 
     37 static void
     38 vxworks_after_open (void)
     39 {
     40   ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open} ();
     41 
     42   if (force_dynamic
     43       && link_info.input_bfds
     44       && bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
     45       && !_bfd_elf_link_create_dynamic_sections (link_info.input_bfds,
     46 						 &link_info))
     47     einfo (_("%X%P: cannot create dynamic sections %E\n"));
     48 
     49   if (!force_dynamic
     50       && !bfd_link_pic (&link_info)
     51       && bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
     52       && elf_hash_table (&link_info)->dynamic_sections_created)
     53     einfo (_("%X%P: dynamic sections created in non-dynamic link\n"));
     54 }
     55 
     56 EOF
     57 
     58 PARSE_AND_LIST_LONGOPTS=$PARSE_AND_LIST_LONGOPTS'
     59   {"force-dynamic", no_argument, NULL, OPTION_FORCE_DYNAMIC},
     60 '
     61 
     62 PARSE_AND_LIST_OPTIONS=$PARSE_AND_LIST_OPTIONS'
     63   fprintf (file, _("\
     64   --force-dynamic             Always create dynamic sections\n"));
     65 '
     66 
     67 PARSE_AND_LIST_ARGS_CASES=$PARSE_AND_LIST_ARGS_CASES'
     68     case OPTION_FORCE_DYNAMIC:
     69       force_dynamic = 1;
     70       break;
     71 '
     72 
     73 # Hook in our routines above.  There are three possibilities:
     74 #
     75 #   (1) VXWORKS_BASE_EM_FILE did not set the hook's LDEMUL_FOO variable.
     76 #	We want to define LDEMUL_FOO to vxworks_foo in that case,
     77 #
     78 #   (2) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
     79 #	gld${EMULATION_NAME}_foo.  This means that the file has
     80 #	replaced elf.em's default definition, so we simply #define
     81 #	the current value of LDEMUL_FOO to vxworks_foo.
     82 #
     83 #   (3) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
     84 #	something other than gld${EMULATION_NAME}_foo.  We handle
     85 #	this case in the same way as (1).
     86 for override in before_parse after_open; do
     87   var="LDEMUL_`echo ${override} | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`"
     88   eval value=\$${var}
     89   if test "${value}" = "gld${EMULATION_NAME}_${override}"; then
     90     fragment <<EOF
     91 #define ${value} vxworks_${override}
     92 EOF
     93   else
     94     eval $var=vxworks_${override}
     95   fi
     96 done
     97