m68k: add TIF_NOTIFY_RESUME and handle it.
TIF_NOTIFY_RESUME added (as bit 5). That way nommu glue needs no changes at
all; mmu one needs just to replace jmi do_signal_return to jne do_signal_return
There we have flags shifted up, until bit 6 (SIGPENDING) is in MSBit; instead
of checking that MSBit is set (jmi) we check that MSBit or something below it
is set (jne); bits 0..4 are never set, so that's precisely "bit 6 or bit 5 is
set".
Usual handling of NOTIFY_RESUME/SIGPENDING is done in do_notify_resume(); glue
calls it instead of do_signal().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S
index 675a854..f29e73c 100644
--- a/arch/m68k/kernel/entry_mm.S
+++ b/arch/m68k/kernel/entry_mm.S
@@ -148,7 +148,7 @@
jcs do_trace_exit
jmi do_delayed_trace
lslw #8,%d0
- jmi do_signal_return
+ jne do_signal_return
pea resume_userspace
jra schedule
@@ -172,7 +172,7 @@
| save top of frame
movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
lslb #1,%d0
- jmi do_signal_return
+ jne do_signal_return
pea resume_userspace
jra schedule
@@ -182,7 +182,7 @@
subql #4,%sp | dummy return address
SAVE_SWITCH_STACK
pea %sp@(SWITCH_STACK_SIZE)
- bsrl do_signal
+ bsrl do_notify_resume
addql #4,%sp
RESTORE_SWITCH_STACK
addql #4,%sp