sh: Add CFI annotations for exception return.
Annotate various assembly code paths with CFI assembler directives so
that DWARF unwind info is available for the unwinder.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index b3b215f..e63178f 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -43,6 +43,7 @@
* syscall #
*
*/
+#include <asm/dwarf.h>
#if defined(CONFIG_PREEMPT)
# define preempt_stop() cli ; TRACE_IRQS_OFF
@@ -66,6 +67,11 @@
.align 2
ret_from_exception:
+ CFI_STARTPROC simple
+ CFI_DEF_CFA r14, 0
+ CFI_REL_OFFSET 17, 64
+ CFI_REL_OFFSET 15, 0
+ CFI_REL_OFFSET 14, 56
preempt_stop()
ENTRY(ret_from_irq)
!
@@ -240,6 +246,7 @@
nop
bra __restore_all
nop
+ CFI_ENDPROC
.align 2
1: .long debug_trap_table