This is considerably faster then parsing the objdump asm output. It will
also make the enabling of llvm-objdump a little easier.
Cc: Nicholas Piggin <npig...@gmail.com>
Cc: Bill Wendling <mo...@google.com>
Signed-off-by: Stephen Rothwell <s...@canb.auug.org.au>
---
arch/powerpc/Makefile.postlink | 2 +-
arch/powerpc/tools/unrel_branch_check.sh | 13 +++++--------
2 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/Makefile.postlink b/arch/powerpc/Makefile.postlink
index 2268396ff4bb..a6c77f4d32b2 100644
--- a/arch/powerpc/Makefile.postlink
+++ b/arch/powerpc/Makefile.postlink
@@ -18,7 +18,7 @@ quiet_cmd_relocs_check = CHKREL $@
ifdef CONFIG_PPC_BOOK3S_64
cmd_relocs_check = \
$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh
"$(OBJDUMP)" "$(NM)" "$@" ; \
- $(BASH) $(srctree)/arch/powerpc/tools/unrel_branch_check.sh
"$(OBJDUMP)" "$@"
+ $(BASH) $(srctree)/arch/powerpc/tools/unrel_branch_check.sh
"$(OBJDUMP)" "$(NM)" "$@"
else
cmd_relocs_check = \
$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh
"$(OBJDUMP)" "$(NM)" "$@"
diff --git a/arch/powerpc/tools/unrel_branch_check.sh
b/arch/powerpc/tools/unrel_branch_check.sh
index 70da90270c78..0369eb2e7e4b 100755
--- a/arch/powerpc/tools/unrel_branch_check.sh
+++ b/arch/powerpc/tools/unrel_branch_check.sh
@@ -5,18 +5,15 @@
# This script checks the unrelocated code of a vmlinux for "suspicious"
# branches to relocated code (head_64.S code).
-# Have Kbuild supply the path to objdump so we handle cross compilation.
+# Have Kbuild supply the path to objdump and nm so we handle cross compilation.
objdump="$1"
-vmlinux="$2"
+nm="$2"
+vmlinux="$3"
-#__end_interrupts should be located within the first 64K
kstart=0xc000000000000000
-printf -v kend '0x%x' $(( kstart + 0x10000 ))
-end_intr=0x$(
-$objdump -R -d --start-address="$kstart" --stop-address="$kend" "$vmlinux"
2>/dev/null |
-awk '$2 == "<__end_interrupts>:" { print $1 }'
-)
+end_intr=0x$($nm -p "$vmlinux" |
+ sed -E -n '/\s+[[:alpha:]]\s+__end_interrupts\s*$/{s///p;q}')
if [ "$end_intr" = "0x" ]; then
exit 0
fi
--
2.28.0
