sys/kern/genassym.sh

   1 #!/bin/sh
   2 # $FreeBSD$
   3
   4 usage()
   5 {
   6         echo "usage: genassym [-o outfile] objfile"
   7         exit 1
   8 }
   9
  10
  11 work()
  12 {
  13         ${NM:='nm'} ${NMFLAGS} "$1" | ${AWK:='awk'} '
  14         / C .*sign$/ {
  15                 sign = substr($1, length($1) - 3, 4)
  16                 sub("^0*", "", sign)
  17                 if (sign != "")
  18                         sign = "-"
  19         }
  20         / C .*w0$/ {
  21                 w0 = substr($1, length($1) - 3, 4)
  22         }
  23         / C .*w1$/ {
  24                 w1 = substr($1, length($1) - 3, 4)
  25         }
  26         / C .*w2$/ {
  27                 w2 = substr($1, length($1) - 3, 4)
  28         }
  29         / C .*w3$/ {
  30                 w3 = substr($1, length($1) - 3, 4)
  31                 w = w3 w2 w1 w0
  32                 sub("^0*", "", w)
  33                 if (w == "")
  34                         w = "0"
  35                 hex = ""
  36                 if (w != "0")
  37                         hex = "0x"
  38                 sub("w3$", "", $3)
  39                 # This still has minor problems representing INT_MIN, etc.
  40                 # E.g.,
  41                 # with 32-bit 2''s complement ints, this prints -0x80000000,
  42                 # which has the wrong type (unsigned int).
  43                 printf("#define\t%s\t%s%s%s\n", $3, sign, hex, w)
  44         } '
  45 }
  46
  47
  48 #
  49 #MAIN PROGGRAM
  50 #
  51 use_outfile="no"
  52 while getopts "o:" option
  53 do
  54         case "$option" in
  55         o)      outfile="$OPTARG"
  56                 use_outfile="yes";;
  57         *)      usage;;
  58         esac
  59 done
  60 shift $(($OPTIND - 1))
  61 case $# in
  62 1)      ;;
  63 *)      usage;;
  64 esac
  65
  66 if [ "$use_outfile" = "yes" ]
  67 then
  68         work $1  3>"$outfile" >&3 3>&-
  69 else
  70         work $1
  71 fi
  72