mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 08:02:07 +00:00
a71aa05e14
This runs a bit faster and removes another use of perl from the kernel build. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-By: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
60 lines
1.5 KiB
Bash
Executable File
60 lines
1.5 KiB
Bash
Executable File
#!/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>
|
|
# 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_'
|
|
)
|
|
|
|
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
|