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 ${CROSS}objcopy \
  15         --strip-unneeded \
  16         -R .comment \
  17         -R .pdr \
  18         -R .mdebug.abi32 \
  19         -R .note.gnu.build-id \
  20         -R .gnu.attributes \
  21         -R .reginfo \
  22         -G __this_module \
  23         -x "$MODULE" "$MODULE.tmp"
  24
  25 [ -n "$NO_RENAME" ] && {
  26         mv "${MODULE}.tmp" "$MODULE"
  27         exit 0
  28 }
  29
  30 ${CROSS}nm "$MODULE.tmp" | awk '
  31 BEGIN {
  32         n = 0
  33 }
  34
  35 $3 && $2 ~ /[brtd]/ && $3 !~ /\$LC/ {
  36         print "--redefine-sym "$3"=_"n;
  37         n = n + 1
  38 }
  39 ' > "$MODULE.tmp1"
  40
  41 ${CROSS}objcopy `cat ${MODULE}.tmp1` ${MODULE}.tmp ${MODULE}.out
  42 mv "${MODULE}.out" "${MODULE}"
  43 rm -f "${MODULE}".t*