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authorStephen Rothwell <sfr@canb.auug.org.au>2020-08-11 16:04:31 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2020-09-02 03:00:22 +0200
commit3d97abbc9f6fe90973551f3e3eef47ffef863114 (patch)
treea5be4e4422e4e2ee5e4bf1d4658083272bdbe823 /arch/powerpc
parentpowerpc: unrel_branch_check.sh: simplify objdump's asm output (diff)
downloadlinux-3d97abbc9f6fe90973551f3e3eef47ffef863114.tar.xz
linux-3d97abbc9f6fe90973551f3e3eef47ffef863114.zip
powerpc: unrel_branch_check.sh: convert grep | sed | awk to just sed
Also start using sed -E and make all the separate expressions into a single one with comments. Pull the stripping of condition registers back into the sed command. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200811140435.20957-5-sfr@canb.auug.org.au
Diffstat (limited to 'arch/powerpc')
-rwxr-xr-xarch/powerpc/tools/unrel_branch_check.sh30
1 files changed, 20 insertions, 10 deletions
diff --git a/arch/powerpc/tools/unrel_branch_check.sh b/arch/powerpc/tools/unrel_branch_check.sh
index 7e936e2cf70d..dc82289b2252 100755
--- a/arch/powerpc/tools/unrel_branch_check.sh
+++ b/arch/powerpc/tools/unrel_branch_check.sh
@@ -27,21 +27,31 @@ awk '$2 == "<__end_interrupts>:" { print $1 }'
BRANCHES=$(
$objdump -R -D --no-show-raw-insn --start-address="$kstart" --stop-address="$end_intr" "$vmlinux" |
-grep -e "^c[0-9a-f]*:\s*b" |
-sed -e '/\<__start_initialization_multiplatform>/d' \
- -e '/b.\?.\?ctr/d' \
- -e '/b.\?.\?lr/d' \
- -e 's/\bbt.\?\s*[[:digit:]][[:digit:]]*,/beq/' \
- -e 's/\bbf.\?\s*[[:digit:]][[:digit:]]*,/bne/' \
- -e 's/\s0x/ /' \
- -e 's/://' |
-awk '{ print $1 ":" $2 ":0x" $3 ":" $4 " "}'
+sed -E -n '
+# match lines that start with a kernel address
+/^c[0-9a-f]*:\s*b/ {
+ # drop a target that we do not care about
+ /\<__start_initialization_multiplatform>/d
+ # drop branches via ctr or lr
+ /\<b.?.?(ct|l)r/d
+ # cope with some differences between Clang and GNU objdumps
+ s/\<bt.?\s*[[:digit:]]+,/beq/
+ s/\<bf.?\s*[[:digit:]]+,/bne/
+ # tidy up
+ s/\s0x/ /
+ s/://
+ # format for the loop below
+ s/^(\S+)\s+(\S+)\s+(\S+)\s*(\S*).*$/\1:\2:0x\3:\4/
+ # strip out condition registers
+ s/:0xcr[0-7],/:0x/
+ p
+}'
)
for tuple in $BRANCHES; do
from=$(echo "$tuple" | cut -d':' -f1)
branch=$(echo "$tuple" | cut -d':' -f2)
- to=$(echo "$tuple" | cut -d':' -f3 | sed 's/cr[0-7],//')
+ to=$(echo "$tuple" | cut -d':' -f3)
sym=$(echo "$tuple" | cut -d':' -f4)
if (( to > end_intr )); then