sys/conf/kmod_syms.awk

   1
   2 # Read global symbols from object file.
   3 BEGIN {
   4         modname = ARGV[1]
   5         while ("${NM:='nm'} -g " ARGV[1] | getline) {
   6                 if (match($0, /^[^[:space:]]+ [^AU] (.*)$/)) {
   7                         syms[$3] = $2
   8                 }
   9         }
  10         delete ARGV[1]
  11 }
  12
  13 # De-list symbols from the export list.
  14 {
  15         smbl = $0
  16         if (!(smbl in syms)) {
  17                 printf "Symbol %s is not present in %s\n",      \
  18                     smbl, modname > "/dev/stderr"
  19         }
  20         delete syms[smbl]
  21 }
  22
  23 # Strip commons, make everything else local.
  24 END {
  25         for (member in syms) {
  26                 if (syms[member] == "C")
  27                         print "-N" member
  28                 else
  29                         print "-L" member
  30         }
  31 }