diff mbox series

[v5,15/33] arm64: bug: Add reachable annotation to warning macros

Message ID 20220622154920.95075-16-chenzhongjin@huawei.com (mailing list archive)
State New, archived
Headers show
Series objtool: add base support for arm64 | expand

Commit Message

Chen Zhongjin June 22, 2022, 3:49 p.m. UTC 
WARN* and BUG* both use brk #0x800 opcodes and the distinction is
provided by the contents of the bug table. This table is not accessible
to objtool, so add an annotation to WARN* macros to let objtool know
that brk handler will return an resume the execution of the instructions
following the WARN's brk.

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
 arch/arm64/include/asm/bug.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/include/asm/bug.h b/arch/arm64/include/asm/bug.h
index 28be048db3f6..9917429971d4 100644
--- a/arch/arm64/include/asm/bug.h
+++ b/arch/arm64/include/asm/bug.h
@@ -19,7 +19,11 @@ 
 	unreachable();					\
 } while (0)
 
-#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
+#define __WARN_FLAGS(flags)			\
+do {						\
+	__BUG_FLAGS(BUGFLAG_WARNING|(flags));	\
+	annotate_reachable();			\
+} while (0)
 
 #define HAVE_ARCH_BUG