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