1# This shell script emits a C file. -*- C -*-
2#   Copyright 2007, 2008 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
22if test -n "$VXWORKS_BASE_EM_FILE" ; then
23  source_em "${srcdir}/emultempl/${VXWORKS_BASE_EM_FILE}.em"
24fi
25
26fragment <<EOF
27
28static int force_dynamic;
29
30static void
31vxworks_before_parse (void)
32{
33  ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse} ();
34  config.rpath_separator = ';';
35}
36
37static void
38vxworks_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      && !link_info.shared
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
56EOF
57
58PARSE_AND_LIST_PROLOGUE=$PARSE_AND_LIST_PROLOGUE'
59enum {
60  OPTION_FORCE_DYNAMIC = 501
61};
62'
63
64PARSE_AND_LIST_LONGOPTS=$PARSE_AND_LIST_LONGOPTS'
65  {"force-dynamic", no_argument, NULL, OPTION_FORCE_DYNAMIC},
66'
67
68PARSE_AND_LIST_OPTIONS=$PARSE_AND_LIST_OPTIONS'
69  fprintf (file, _("\
70  --force-dynamic             Always create dynamic sections\n"));
71'
72
73PARSE_AND_LIST_ARGS_CASES=$PARSE_AND_LIST_ARGS_CASES'
74    case OPTION_FORCE_DYNAMIC:
75      force_dynamic = 1;
76      break;
77'
78
79# Hook in our routines above.  There are three possibilities:
80#
81#   (1) VXWORKS_BASE_EM_FILE did not set the hook's LDEMUL_FOO variable.
82#	We want to define LDEMUL_FOO to vxworks_foo in that case,
83#
84#   (2) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
85#	gld${EMULATION_NAME}_foo.  This means that the file has
86#	replaced elf32.em's default definition, so we simply #define
87#	the current value of LDEMUL_FOO to vxworks_foo.
88#
89#   (3) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
90#	something other than gld${EMULATION_NAME}_foo.  We handle
91#	this case in the same way as (1).
92for override in before_parse after_open; do
93  var="LDEMUL_`echo ${override} | tr a-z A-Z`"
94  eval value=\$${var}
95  if test "${value}" = "gld${EMULATION_NAME}_${override}"; then
96    fragment <<EOF
97#define ${value} vxworks_${override}
98EOF
99  else
100    eval $var=vxworks_${override}
101  fi
102done
103