strip kernel modules more aggressively: make all global symbols local, rename all symbols in the symbol table to make them compress better
SVN-Revision: 30662v19.07.3_mercusys_ac12_duma
parent
c918810414
commit
c2590fe930
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#!/usr/bin/env bash
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[ -n "$CROSS" ] || {
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echo "The variable CROSS must be set to point to the cross-compiler prefix"
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exit 1
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}
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MODULE="$1"
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[ "$#" -ne 1 ] && {
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echo "Usage: $0 <module>"
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exit 1
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}
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${CROSS}objcopy \
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--strip-unneeded \
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-R .comment \
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-R .pdr \
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-R .mdebug.abi32 \
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-R .note.gnu.build-id \
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-R .gnu.attributes \
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-R .reginfo \
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-G __this_module \
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-x "$MODULE" "$MODULE.tmp"
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${CROSS}nm "$MODULE.tmp" | awk '
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BEGIN {
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n = 0
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}
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$3 && $2 ~ /[brtd]/ && $3 !~ /\$LC/ {
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print "--redefine-sym "$3"=_"n;
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n = n + 1
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}
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' > "$MODULE.tmp1"
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${CROSS}objcopy `cat ${MODULE}.tmp1` ${MODULE}.tmp ${MODULE}.out
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mv "${MODULE}.out" "${MODULE}"
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rm -f "${MODULE}".t*
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