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sh: Setup frame pointer in handle_exception path

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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>
This commit is contained in:
Matt Fleming 2010-01-27 20:44:59 +00:00 committed by Paul Mundt
parent 142698282c
commit 1dca56f138
1 changed files with 2 additions and 0 deletions
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arch/sh/kernel/cpu/sh3/entry.S
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@ -365,6 +365,8 @@ handle_exception:
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)