diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2012-02-20 17:38:26 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2012-02-20 17:38:26 +0000 |
| commit | 32a69747812d72bb93bd3a71090d5db58b9a5602 (patch) | |
| tree | c955963e3b6883779c13612d6ca114ff500ab4f8 /scripts | |
| parent | 31df1c58cb4a9c1da3bb67e7d5cd3bc9b2839799 (diff) | |
| download | upstream-32a69747812d72bb93bd3a71090d5db58b9a5602.tar.gz upstream-32a69747812d72bb93bd3a71090d5db58b9a5602.tar.bz2 upstream-32a69747812d72bb93bd3a71090d5db58b9a5602.zip | |
strip kernel modules more aggressively: make all global symbols local, rename all symbols in the symbol table to make them compress better
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30662 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/rstrip.sh | 21 | ||||
| -rwxr-xr-x | scripts/strip-kmod.sh | 38 |
2 files changed, 39 insertions, 20 deletions
diff --git a/scripts/rstrip.sh b/scripts/rstrip.sh index e42caa53a2..4665ff5559 100755 --- a/scripts/rstrip.sh +++ b/scripts/rstrip.sh @@ -5,25 +5,6 @@ # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # - -find_modparams() { - FILE="$1" - $NM "$FILE" | awk ' -BEGIN { - FS=" " -} -($3 ~ /^__module_parm_/) && ($3 !~ /^__module_parm_desc/) { - gsub(/__module_parm_/, "", $3) - printf "-K " $3 " " -} -($2 ~ /r/) && ($3 ~ /__param_/) { - gsub(/__param_/, "", $3) - printf "-K " $3 " " -} -' -} - - SELF=${0##*/} [ -z "$STRIP" ] && { @@ -46,7 +27,7 @@ find $TARGETS -type f -a -exec file {} \; | \ while read F S; do echo "$SELF: $F:$S" [ "${S}" = "relocatable" ] && { - eval "$STRIP_KMOD -w -K '__param*' -K '__mod*' $(find_modparams "$F")$F" + eval "$STRIP_KMOD $F" } || { b=$(stat -c '%a' $F) eval "$STRIP $F" diff --git a/scripts/strip-kmod.sh b/scripts/strip-kmod.sh new file mode 100755 index 0000000000..68da9e901b --- /dev/null +++ b/scripts/strip-kmod.sh @@ -0,0 +1,38 @@ +#!/usr/bin/env bash +[ -n "$CROSS" ] || { + echo "The variable CROSS must be set to point to the cross-compiler prefix" + exit 1 +} + +MODULE="$1" + +[ "$#" -ne 1 ] && { + echo "Usage: $0 <module>" + exit 1 +} + +${CROSS}objcopy \ + --strip-unneeded \ + -R .comment \ + -R .pdr \ + -R .mdebug.abi32 \ + -R .note.gnu.build-id \ + -R .gnu.attributes \ + -R .reginfo \ + -G __this_module \ + -x "$MODULE" "$MODULE.tmp" + +${CROSS}nm "$MODULE.tmp" | awk ' +BEGIN { + n = 0 +} + +$3 && $2 ~ /[brtd]/ && $3 !~ /\$LC/ { + print "--redefine-sym "$3"=_"n; + n = n + 1 +} +' > "$MODULE.tmp1" + +${CROSS}objcopy `cat ${MODULE}.tmp1` ${MODULE}.tmp ${MODULE}.out +mv "${MODULE}.out" "${MODULE}" +rm -f "${MODULE}".t* |