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| author | Roland McGrath <roland@redhat.com> | 2008-07-27 16:52:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-28 16:30:50 +1000 |
| commit | 7d6d637dac2050f30a1b57b0a3dc5de4a10616ba (patch) | |
| tree | 5108cacaf5e204d58bc07afb1d67c73144f1bf55 /arch/powerpc/kernel/entry_32.S | |
| parent | f1ba12856b7a7d43e495e216bc91e6bbf7aac383 (diff) | |
| download | lwn-7d6d637dac2050f30a1b57b0a3dc5de4a10616ba.tar.gz lwn-7d6d637dac2050f30a1b57b0a3dc5de4a10616ba.zip | |
powerpc: Add TIF_NOTIFY_RESUME support for tracehook
This adds TIF_NOTIFY_RESUME support for powerpc. When set,
we call tracehook_notify_resume() on the way to user mode.
This overloads do_signal() to do the work, but changes its
arguments to it has the TIF_* bits handy in a register and
drops the useless first argument that was always zero.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index e6fca6a9014d..1cbbf7033641 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -1060,8 +1060,8 @@ do_user_signal: /* r10 contains MSR_KERNEL here */ SAVE_NVGPRS(r1) rlwinm r3,r3,0,0,30 stw r3,_TRAP(r1) -2: li r3,0 - addi r4,r1,STACK_FRAME_OVERHEAD +2: addi r3,r1,STACK_FRAME_OVERHEAD + mr r4,r9 bl do_signal REST_NVGPRS(r1) b recheck |