gdb/regformats/regdat.sh

   1 #!/bin/sh -u
   2
   3 # Register protocol definitions for GDB, the GNU debugger.
   4 # Copyright 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
   5 #
   6 # This file is part of GDB.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 move_if_change ()
  22 {
  23     file=$1
  24     if test -r ${file} && cmp -s "${file}" new-"${file}"
  25     then
  26         echo "${file} unchanged." 1>&2
  27     else
  28         mv new-"${file}" "${file}"
  29         echo "${file} updated." 1>&2
  30     fi
  31 }
  32
  33 # Format of the input files
  34 read="type entry"
  35
  36 do_read ()
  37 {
  38     type=""
  39     entry=""
  40     while read line
  41     do
  42         if test "${line}" = ""
  43         then
  44             continue
  45         elif test "${line}" = "#" -a "${comment}" = ""
  46         then
  47             continue
  48         elif expr "${line}" : "#" > /dev/null
  49         then
  50             comment="${comment}
  51 ${line}"
  52         else
  53
  54             # The semantics of IFS varies between different SH's.  Some
  55             # treat ``::' as three fields while some treat it as just too.
  56             # Work around this by eliminating ``::'' ....
  57             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  58
  59             OFS="${IFS}" ; IFS="[:]"
  60             eval read ${read} <<EOF
  61 ${line}
  62 EOF
  63             IFS="${OFS}"
  64
  65             # .... and then going back through each field and strip out those
  66             # that ended up with just that space character.
  67             for r in ${read}
  68             do
  69                 if eval test \"\${${r}}\" = \"\ \"
  70                 then
  71                     eval ${r}=""
  72                 fi
  73             done
  74
  75             break
  76         fi
  77     done
  78     if [ -n "${type}" ]
  79     then
  80         true
  81     else
  82         false
  83     fi
  84 }
  85
  86 if test ! -r $1; then
  87   echo "$0: Could not open $1." 1>&2
  88   exit 1
  89 fi
  90
  91 copyright ()
  92 {
  93 cat <<EOF
  94 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
  95
  96 /* A register protocol for GDB, the GNU debugger.
  97    Copyright 2001, 2002 Free Software Foundation, Inc.
  98
  99    This file is part of GDB.
 100
 101    This program is free software; you can redistribute it and/or modify
 102    it under the terms of the GNU General Public License as published by
 103    the Free Software Foundation; either version 2 of the License, or
 104    (at your option) any later version.
 105
 106    This program is distributed in the hope that it will be useful,
 107    but WITHOUT ANY WARRANTY; without even the implied warranty of
 108    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 109    GNU General Public License for more details.
 110
 111    You should have received a copy of the GNU General Public License
 112    along with this program; if not, write to the Free Software
 113    Foundation, Inc., 59 Temple Place - Suite 330,
 114    Boston, MA 02111-1307, USA.  */
 115
 116 /* This file was created with the aid of \`\`regdat.sh'' and \`\`$1''.  */
 117
 118 EOF
 119 }
 120
 121
 122 exec > new-$2
 123 copyright $1
 124 echo '#include "regdef.h"'
 125 echo '#include "regcache.h"'
 126 echo
 127 offset=0
 128 i=0
 129 name=x
 130 expedite=x
 131 exec < $1
 132 while do_read
 133 do
 134   if test "${type}" = "name"; then
 135     name="${entry}"
 136     echo "struct reg regs_${name}[] = {"
 137     continue
 138   elif test "${type}" = "expedite"; then
 139     expedite="${entry}"
 140     continue
 141   elif test "${name}" = x; then
 142     echo "$0: $1 does not specify \`\`name''." 1>&2
 143     exit 1
 144   else
 145     echo "  { \"${entry}\", ${offset}, ${type} },"
 146     offset=`expr ${offset} + ${type}`
 147     i=`expr $i + 1`
 148   fi
 149 done
 150
 151 echo "};"
 152 echo
 153 echo "const char *expedite_regs_${name}[] = { \"`echo ${expedite} | sed 's/,/", "/g'`\", 0 };"
 154 echo
 155
 156 cat <<EOF
 157 void
 158 init_registers ()
 159 {
 160     set_register_cache (regs_${name},
 161                         sizeof (regs_${name}) / sizeof (regs_${name}[0]));
 162     gdbserver_expedite_regs = expedite_regs_${name};
 163 }
 164 EOF
 165
 166 # close things off
 167 exec 1>&2
 168 move_if_change $2