sh: Setup frame pointer in handle_exception path
In order to allow the DWARF unwinder to unwind through exceptions we
need to setup the frame pointer register (r14).
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index 3f7e2a2..29021bc6 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -365,6 +365,8 @@
mov.l @k2, k2 ! read out vector and keep in k2
handle_exception_special:
+ setup_frame_reg
+
! Setup return address and jump to exception handler
mov.l 7f, r9 ! fetch return address
stc r2_bank, r0 ! k2 (vector)