1*47981b5cSAlexandre Ghiti#!/bin/sh 2*47981b5cSAlexandre Ghiti# SPDX-License-Identifier: GPL-2.0-or-later 3*47981b5cSAlexandre Ghiti 4*47981b5cSAlexandre Ghiti# Get a list of all the relocations, remove from it the relocations 5*47981b5cSAlexandre Ghiti# that are known to be legitimate and return this list to arch specific 6*47981b5cSAlexandre Ghiti# script that will look for suspicious relocations. 7*47981b5cSAlexandre Ghiti 8*47981b5cSAlexandre Ghitiobjdump="$1" 9*47981b5cSAlexandre Ghitinm="$2" 10*47981b5cSAlexandre Ghitivmlinux="$3" 11*47981b5cSAlexandre Ghiti 12*47981b5cSAlexandre Ghiti# Remove from the possible bad relocations those that match an undefined 13*47981b5cSAlexandre Ghiti# weak symbol which will result in an absolute relocation to 0. 14*47981b5cSAlexandre Ghiti# Weak unresolved symbols are of that form in nm output: 15*47981b5cSAlexandre Ghiti# " w _binary__btf_vmlinux_bin_end" 16*47981b5cSAlexandre Ghitiundef_weak_symbols=$($nm "$vmlinux" | awk '$1 ~ /w/ { print $2 }') 17*47981b5cSAlexandre Ghiti 18*47981b5cSAlexandre Ghiti$objdump -R "$vmlinux" | 19*47981b5cSAlexandre Ghiti grep -E '\<R_' | 20*47981b5cSAlexandre Ghiti ([ "$undef_weak_symbols" ] && grep -F -w -v "$undef_weak_symbols" || cat) 21