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

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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>
This commit is contained in:
David S. Miller
2006-01-19 02:42:49 -08:00
parent f7111ceb52
commit 2d7d5f0511
16 changed files with 189 additions and 427 deletions
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33
arch/sparc64/kernel/rtrap.S
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@@ -53,14 +53,13 @@ __handle_user_windows:
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING), %g0
1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
be,pt %xcc, __handle_user_windows_continue
nop
clr %o0
mov %l5, %o2
mov %l6, %o3
add %sp, PTREGS_OFF, %o1
mov %l0, %o4
mov %l5, %o1
mov %l6, %o2
add %sp, PTREGS_OFF, %o0
mov %l0, %o3
call do_notify_resume
wrpr %g0, RTRAP_PSTATE, %pstate
@@ -96,15 +95,14 @@ __handle_perfctrs:
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING), %g0
1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
be,pt %xcc, __handle_perfctrs_continue
sethi %hi(TSTATE_PEF), %o0
clr %o0
mov %l5, %o2
mov %l6, %o3
add %sp, PTREGS_OFF, %o1
mov %l0, %o4
mov %l5, %o1
mov %l6, %o2
add %sp, PTREGS_OFF, %o0
mov %l0, %o3
call do_notify_resume
wrpr %g0, RTRAP_PSTATE, %pstate
@@ -129,11 +127,10 @@ __handle_userfpu:
ba,a,pt %xcc, __handle_userfpu_continue
__handle_signal:
clr %o0
mov %l5, %o2
mov %l6, %o3
add %sp, PTREGS_OFF, %o1
mov %l0, %o4
mov %l5, %o1
mov %l6, %o2
add %sp, PTREGS_OFF, %o0
mov %l0, %o3
call do_notify_resume
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
@@ -200,7 +197,7 @@ __handle_preemption_continue:
andcc %l1, %o0, %g0
andcc %l0, _TIF_NEED_RESCHED, %g0
bne,pn %xcc, __handle_preemption
andcc %l0, (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING), %g0
andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2