gdb/observer.sh

   1 #!/bin/sh -e
   2
   3 # Make certain that the script is not running in an internationalized
   4 # environment.
   5 LANG=C ; export LANG
   6 LC_ALL=C ; export LC_ALL
   7
   8 if test $# -ne 3
   9 then
  10     echo "Usage: $0 <h|inc> <observer.texi> <observer.out>" 1>&2
  11     exit 0
  12 fi
  13
  14 lang=$1 ; shift
  15 texi=$1 ; shift
  16 o=$1
  17 case $lang in
  18   h) tmp=htmp ;;
  19   inc) tmp=itmp ;;
  20 esac
  21 otmp="`echo $1 | sed -e 's,\.[^.]*$,,'`.$tmp"; shift
  22 echo "Creating ${otmp}" 1>&2
  23 rm -f ${otmp}
  24
  25 # Can use any of the following: cat cmp cp diff echo egrep expr false
  26 # grep install-info ln ls mkdir mv pwd rm rmdir sed sleep sort tar
  27 # test touch true
  28
  29 cat <<EOF >>${otmp}
  30 /* GDB Notifications to Observers.
  31
  32    Copyright (C) 2004-2005, 2007-2012 Free Software Foundation, Inc.
  33
  34    This file is part of GDB.
  35
  36    This program is free software; you can redistribute it and/or modify
  37    it under the terms of the GNU General Public License as published by
  38    the Free Software Foundation; either version 3 of the License, or
  39    (at your option) any later version.
  40
  41    This program is distributed in the hope that it will be useful,
  42    but WITHOUT ANY WARRANTY; without even the implied warranty of
  43    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  44    GNU General Public License for more details.
  45
  46    You should have received a copy of the GNU General Public License
  47    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  48
  49    --
  50
  51    This file was generated using observer.sh and observer.texi.  */
  52
  53 EOF
  54
  55
  56 case $lang in
  57     h) cat <<EOF >>${otmp}
  58 #ifndef OBSERVER_H
  59 #define OBSERVER_H
  60
  61 struct observer;
  62 struct bpstats;
  63 struct so_list;
  64 struct objfile;
  65 struct thread_info;
  66 struct inferior;
  67 EOF
  68         ;;
  69 esac
  70
  71 # We are about to set IFS=:, so DOS-style file names with a drive
  72 # letter and a colon will be in trouble.
  73
  74 if test -n "$DJGPP"
  75 then
  76      texi=`echo $texi | sed -e 's,^\([a-zA-Z]\):/,/dev/\1/,'`
  77 fi
  78
  79 # generate a list of events that can be observed
  80
  81 IFS=:
  82 sed -n '
  83 /@deftypefun void/{
  84 # Save original line for later processing into the actual parameter
  85     h
  86 # Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
  87 # to event and formals: EVENT:TYPE PARAM, ...:
  88     s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
  89     s/@var{//g
  90     s/}//g
  91 # Switch to held
  92     x
  93 # Convert from: @deftypefun void FUNC (TYPE @var{PARAM},...)
  94 # to actuals: PARAM, ...
  95     s/^[^{]*[{]*//
  96     s/[}]*[^}]*$//
  97     s/}[^{]*{/, /g
  98 # Combine held (EVENT:TYPE PARAM, ...:) and pattern (PARAM, ...) into
  99 # FUNC:TYPE PARAM, ...:PARAM, ...
 100     H
 101     x
 102     s/\n/:/g
 103     p
 104 }
 105 ' $texi | while read event formal actual
 106 do
 107   case $lang in
 108       h) cat <<EOF >>${otmp}
 109
 110 /* ${event} notifications.  */
 111
 112 typedef void (observer_${event}_ftype) (${formal});
 113
 114 extern struct observer *observer_attach_${event} (observer_${event}_ftype *f);
 115 extern void observer_detach_${event} (struct observer *observer);
 116 extern void observer_notify_${event} (${formal});
 117 EOF
 118         ;;
 119
 120       inc)
 121         cat <<EOF >>${otmp}
 122
 123 /* ${event} notifications.  */
 124
 125 static struct observer_list *${event}_subject = NULL;
 126
 127 EOF
 128         if test "$formal" != "void"; then
 129             cat<<EOF >>${otmp}
 130 struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
 131
 132 EOF
 133         fi
 134         cat <<EOF >>${otmp}
 135 static void
 136 observer_${event}_notification_stub (const void *data, const void *args_data)
 137 {
 138   observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
 139 EOF
 140
 141         notify_args=`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`
 142
 143         if test ! -z "${notify_args}"; then
 144             cat<<EOF >>${otmp}
 145   const struct ${event}_args *args = args_data;
 146 EOF
 147         fi
 148         cat <<EOF >>${otmp}
 149   notify (${notify_args});
 150 }
 151
 152 struct observer *
 153 observer_attach_${event} (observer_${event}_ftype *f)
 154 {
 155   return generic_observer_attach (&${event}_subject,
 156                                   &observer_${event}_notification_stub,
 157                                   (void *) f);
 158 }
 159
 160 void
 161 observer_detach_${event} (struct observer *observer)
 162 {
 163   generic_observer_detach (&${event}_subject, observer);
 164 }
 165
 166 void
 167 observer_notify_${event} (${formal})
 168 {
 169 EOF
 170         if test "$formal" != "void"; then
 171             cat<<EOF >>${otmp}
 172   struct ${event}_args args;
 173   `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
 174
 175 EOF
 176         else
 177             echo "char *args = NULL;" >> ${otmp}
 178         fi
 179         cat<<EOF >>${otmp}
 180   if (observer_debug)
 181     fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
 182   generic_observer_notify (${event}_subject, &args);
 183 }
 184 EOF
 185         ;;
 186     esac
 187 done
 188
 189
 190 case $lang in
 191     h) cat <<EOF >>${otmp}
 192
 193 #endif /* OBSERVER_H */
 194 EOF
 195 esac
 196
 197
 198 echo Moving ${otmp} to ${o}
 199 mv ${otmp} ${o}