1#!/bin/sh
 
 2
 3# Copyright © 2015 IBM Corporation
 4
 5# This program is free software; you can redistribute it and/or
 6# modify it under the terms of the GNU General Public License
 7# as published by the Free Software Foundation; either version
 8# 2 of the License, or (at your option) any later version.
 9
10# This script checks the relocations of a vmlinux for "suspicious"
11# relocations.
12
13# based on relocs_check.pl
14# Copyright © 2009 IBM Corporation
15
16if [ $# -lt 2 ]; then
17	echo "$0 [path to objdump] [path to vmlinux]" 1>&2
18	exit 1
19fi
20
21# Have Kbuild supply the path to objdump so we handle cross compilation.
22objdump="$1"
23vmlinux="$2"
24
25bad_relocs=$(
26"$objdump" -R "$vmlinux" |
27	# Only look at relocation lines.
28	grep -E '\<R_' |
29	# These relocations are okay
30	# On PPC64:
31	#	R_PPC64_RELATIVE, R_PPC64_NONE
32	#	R_PPC64_ADDR64 mach_<name>
33	#	R_PPC64_ADDR64 __crc_<name>
34	# On PPC:
35	#	R_PPC_RELATIVE, R_PPC_ADDR16_HI,
36	#	R_PPC_ADDR16_HA,R_PPC_ADDR16_LO,
37	#	R_PPC_NONE
38	grep -F -w -v 'R_PPC64_RELATIVE
39R_PPC64_NONE
 
40R_PPC_ADDR16_LO
41R_PPC_ADDR16_HI
42R_PPC_ADDR16_HA
43R_PPC_RELATIVE
44R_PPC_NONE' |
45	grep -E -v '\<R_PPC64_ADDR64[[:space:]]+mach_' |
46	grep -E -v '\<R_PPC64_ADDR64[[:space:]]+__crc_'
47)
48
49if [ -z "$bad_relocs" ]; then
50	exit 0
51fi
52
53num_bad=$(echo "$bad_relocs" | wc -l)
54echo "WARNING: $num_bad bad relocations"
55echo "$bad_relocs"
56
57# If we see this type of relocation it's an idication that
58# we /may/ be using an old version of binutils.
59if echo "$bad_relocs" | grep -q -F -w R_PPC64_UADDR64; then
60	echo "WARNING: You need at least binutils >= 2.19 to build a CONFIG_RELOCATABLE kernel"
61fi

 1#!/bin/sh
 2# SPDX-License-Identifier: GPL-2.0-or-later
 3
 4# Copyright © 2015 IBM Corporation
 5
 
 
 
 
 6
 7# This script checks the relocations of a vmlinux for "suspicious"
 8# relocations.
 9
10# based on relocs_check.pl
11# Copyright © 2009 IBM Corporation
12
13if [ $# -lt 3 ]; then
14	echo "$0 [path to objdump] [path to nm] [path to vmlinux]" 1>&2
15	exit 1
16fi
17
 
 
 
 
18bad_relocs=$(
19${srctree}/scripts/relocs_check.sh "$@" |
 
 
20	# These relocations are okay
21	# On PPC64:
22	#	R_PPC64_RELATIVE, R_PPC64_NONE
 
 
23	# On PPC:
24	#	R_PPC_RELATIVE, R_PPC_ADDR16_HI,
25	#	R_PPC_ADDR16_HA,R_PPC_ADDR16_LO,
26	#	R_PPC_NONE
27	grep -F -w -v 'R_PPC64_RELATIVE
28R_PPC64_NONE
29R_PPC64_UADDR64
30R_PPC_ADDR16_LO
31R_PPC_ADDR16_HI
32R_PPC_ADDR16_HA
33R_PPC_RELATIVE
34R_PPC_NONE'
 
 
35)
36
37if [ -z "$bad_relocs" ]; then
38	exit 0
39fi
40
41num_bad=$(echo "$bad_relocs" | wc -l)
42echo "WARNING: $num_bad bad relocations"
43echo "$bad_relocs"