scripts/strip-kmod.sh

   1 #!/usr/bin/env bash
   2 [ -n "$CROSS" ] || {
   3         echo "The variable CROSS must be set to point to the cross-compiler prefix"
   4         exit 1
   5 }
   6
   7 MODULE="$1"
   8
   9 [ "$#" -ne 1 ] && {
  10         echo "Usage: $0 <module>"
  11         exit 1
  12 }
  13
  14 ARGS=
  15 [ -n "$KEEP_SYMBOLS" ] || ARGS="-x -G __this_module --strip-unneeded"
  16
  17 ${CROSS}objcopy \
  18         -R .comment \
  19         -R .pdr \
  20         -R .mdebug.abi32 \
  21         -R .note.gnu.build-id \
  22         -R .gnu.attributes \
  23         -R .reginfo \
  24         $ARGS \
  25         "$MODULE" "$MODULE.tmp"
  26
  27 [ -n "$NO_RENAME" ] && {
  28         mv "${MODULE}.tmp" "$MODULE"
  29         exit 0
  30 }
  31
  32 ${CROSS}nm "$MODULE.tmp" | awk '
  33 BEGIN {
  34         n = 0
  35 }
  36
  37 $3 && $2 ~ /[brtd]/ && $3 !~ /\$LC/ {
  38         print "--redefine-sym "$3"=_"n;
  39         n = n + 1
  40 }
  41 ' > "$MODULE.tmp1"
  42
  43 ${CROSS}objcopy `cat ${MODULE}.tmp1` ${MODULE}.tmp ${MODULE}.out
  44 mv "${MODULE}.out" "${MODULE}"
  45 rm -f "${MODULE}".t*