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author | Nicholas Piggin <npiggin@gmail.com> | 2016-11-26 14:26:10 +1100 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-28 21:26:53 +1000 |
commit | b71c9ffb140556004caf7ba27083f9d90ae8d14b (patch) | |
tree | 7139123f4a58fc9146c7923ec4af45e8126c9b1d /arch/powerpc/tools/relocs_check.sh | |
parent | f188d0524d7e09f7ec801df9761dc1d898b1a1c0 (diff) | |
download | linux-b71c9ffb140556004caf7ba27083f9d90ae8d14b.tar.bz2 |
powerpc: Add arch/powerpc/tools directory
Move a couple of existing scripts under there. Remove scripts directory:
a script is a tool, a tool is not a script.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/tools/relocs_check.sh')
-rwxr-xr-x | arch/powerpc/tools/relocs_check.sh | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/powerpc/tools/relocs_check.sh b/arch/powerpc/tools/relocs_check.sh new file mode 100755 index 000000000000..ec2d5c835170 --- /dev/null +++ b/arch/powerpc/tools/relocs_check.sh @@ -0,0 +1,61 @@ +#!/bin/sh + +# Copyright © 2015 IBM Corporation + +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version +# 2 of the License, or (at your option) any later version. + +# This script checks the relocations of a vmlinux for "suspicious" +# relocations. + +# based on relocs_check.pl +# Copyright © 2009 IBM Corporation + +if [ $# -lt 2 ]; then + echo "$0 [path to objdump] [path to vmlinux]" 1>&2 + exit 1 +fi + +# Have Kbuild supply the path to objdump so we handle cross compilation. +objdump="$1" +vmlinux="$2" + +bad_relocs=$( +"$objdump" -R "$vmlinux" | + # Only look at relocation lines. + grep -E '\<R_' | + # These relocations are okay + # On PPC64: + # R_PPC64_RELATIVE, R_PPC64_NONE + # R_PPC64_ADDR64 mach_<name> + # R_PPC64_ADDR64 __crc_<name> + # On PPC: + # R_PPC_RELATIVE, R_PPC_ADDR16_HI, + # R_PPC_ADDR16_HA,R_PPC_ADDR16_LO, + # R_PPC_NONE + grep -F -w -v 'R_PPC64_RELATIVE +R_PPC64_NONE +R_PPC_ADDR16_LO +R_PPC_ADDR16_HI +R_PPC_ADDR16_HA +R_PPC_RELATIVE +R_PPC_NONE' | + grep -E -v '\<R_PPC64_ADDR64[[:space:]]+mach_' | + grep -E -v '\<R_PPC64_ADDR64[[:space:]]+__crc_' +) + +if [ -z "$bad_relocs" ]; then + exit 0 +fi + +num_bad=$(echo "$bad_relocs" | wc -l) +echo "WARNING: $num_bad bad relocations" +echo "$bad_relocs" + +# If we see this type of relocation it's an idication that +# we /may/ be using an old version of binutils. +if echo "$bad_relocs" | grep -q -F -w R_PPC64_UADDR64; then + echo "WARNING: You need at least binutils >= 2.19 to build a CONFIG_RELOCATABLE kernel" +fi |