sh: Setup the frame pointer in handle_interrupt

When CONFIG_DWARF_UNWINDER is enabled setup r14 in handle_interrupt, so
that we can figure out what function was running when we were
interrupted.

Signed-off-by: Matt Fleming <matt@console-pimps.org>

diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index 67ad646..f89ec87 100644 (file)
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -508,6 +508,8 @@ ENTRY(handle_interrupt)
        bsr     save_regs       ! needs original pr value in k3
         mov    #-1, k2         ! default vector kept in k2
 
        bsr     save_regs       ! needs original pr value in k3
         mov    #-1, k2         ! default vector kept in k2
 

+       setup_frame_reg
+

        ! Setup return address and jump to do_IRQ
        mov.l   4f, r9          ! fetch return address
        lds     r9, pr          ! put return address in pr
        ! Setup return address and jump to do_IRQ
        mov.l   4f, r9          ! fetch return address
        lds     r9, pr          ! put return address in pr