[SPARC]: Add support for *at(), ppoll, and pselect syscalls.

This also includes by necessity _TIF_RESTORE_SIGMASK support,
which actually resulted in a lot of cleanups.

The sparc signal handling code is quite a mess and I should
clean it up some day.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 5 deletions

diff --git a/arch/sparc/kernel/rtrap.S b/arch/sparc/kernel/rtrap.S
index f7460d897e79..77ca6fd81253 100644
--- a/arch/sparc/kernel/rtrap.S
+++ b/arch/sparc/kernel/rtrap.S
@@ -68,15 +68,14 @@ ret_trap_lockless_ipi:
 
         ld      [%curptr + TI_FLAGS], %g2
 signal_p:
-        andcc   %g2, (_TIF_NOTIFY_RESUME|_TIF_SIGPENDING), %g0
+        andcc   %g2, (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %g0
         bz,a    ret_trap_continue
          ld     [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
 
-        clr     %o0
-        mov     %l5, %o2
-        mov     %l6, %o3
+        mov     %l5, %o1
+        mov     %l6, %o2
         call    do_signal
-         add    %sp, STACKFRAME_SZ, %o1 ! pt_regs ptr
+         add    %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr
 
         /* Fall through. */
         ld      [%sp + STACKFRAME_SZ + PT_PSR], %t_psr