[ARM] 5385/2: unwind: Add unwinding information to exception entry points

This is needed to allow or stop the unwinding at certain points in the
kernel like exception entries.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 49a6ba926c2b..b8c1f1411440 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -11,6 +11,7 @@
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
 #include <mach/entry-macro.S>
+#include <asm/unwind.h>
 
 #include "entry-header.S"
 
@@ -22,6 +23,8 @@
  * stack.
  */
 ret_fast_syscall:
+ UNWIND(.fnstart        )
+ UNWIND(.cantunwind     )
         disable_irq                             @ disable interrupts
         ldr     r1, [tsk, #TI_FLAGS]
         tst     r1, #_TIF_WORK_MASK
@@ -38,6 +41,7 @@ ret_fast_syscall:
         mov     r0, r0
         add     sp, sp, #S_FRAME_SIZE - S_PC
         movs    pc, lr                          @ return & move spsr_svc into cpsr
+ UNWIND(.fnend          )
 
 /*
  * Ok, we need to do extra processing, enter the slow path.