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authorNicholas Piggin <npiggin@gmail.com>2016-11-26 14:26:10 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-04-28 21:26:53 +1000
commitb71c9ffb140556004caf7ba27083f9d90ae8d14b (patch)
tree7139123f4a58fc9146c7923ec4af45e8126c9b1d /arch/powerpc/tools
parentf188d0524d7e09f7ec801df9761dc1d898b1a1c0 (diff)
downloadlinux-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')
-rwxr-xr-xarch/powerpc/tools/gcc-check-mprofile-kernel.sh23
-rwxr-xr-xarch/powerpc/tools/relocs_check.sh61
2 files changed, 84 insertions, 0 deletions
diff --git a/arch/powerpc/tools/gcc-check-mprofile-kernel.sh b/arch/powerpc/tools/gcc-check-mprofile-kernel.sh
new file mode 100755
index 000000000000..c658d8cf760b
--- /dev/null
+++ b/arch/powerpc/tools/gcc-check-mprofile-kernel.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -e
+set -o pipefail
+
+# To debug, uncomment the following line
+# set -x
+
+# Test whether the compile option -mprofile-kernel exists and generates
+# profiling code (ie. a call to _mcount()).
+echo "int func() { return 0; }" | \
+ $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
+ grep -q "_mcount"
+
+# Test whether the notrace attribute correctly suppresses calls to _mcount().
+
+echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \
+ $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
+ grep -q "_mcount" && \
+ exit 1
+
+echo "OK"
+exit 0
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