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Diffstat (limited to 'arch/openrisc/kernel/entry.S')
-rw-r--r--arch/openrisc/kernel/entry.S59
1 files changed, 33 insertions, 26 deletions
diff --git a/arch/openrisc/kernel/entry.S b/arch/openrisc/kernel/entry.S
index d8a455ede5a7..fec8bf97d806 100644
--- a/arch/openrisc/kernel/entry.S
+++ b/arch/openrisc/kernel/entry.S
@@ -853,37 +853,44 @@ UNHANDLED_EXCEPTION(_vector_0x1f00,0x1f00)
/* ========================================================[ return ] === */
+_resume_userspace:
+ DISABLE_INTERRUPTS(r3,r4)
+ l.lwz r4,TI_FLAGS(r10)
+ l.andi r13,r4,_TIF_WORK_MASK
+ l.sfeqi r13,0
+ l.bf _restore_all
+ l.nop
+
_work_pending:
- /*
- * if (current_thread_info->flags & _TIF_NEED_RESCHED)
- * schedule();
- */
- l.lwz r5,TI_FLAGS(r10)
- l.andi r3,r5,_TIF_NEED_RESCHED
- l.sfnei r3,0
- l.bnf _work_notifysig
+ l.lwz r5,PT_ORIG_GPR11(r1)
+ l.sfltsi r5,0
+ l.bnf 1f
l.nop
- l.jal schedule
+ l.andi r5,r5,0
+1:
+ l.jal do_work_pending
+ l.ori r3,r1,0 /* pt_regs */
+
+ l.sfeqi r11,0
+ l.bf _restore_all
l.nop
- l.j _resume_userspace
+ l.sfltsi r11,0
+ l.bnf 1f
l.nop
-
-/* Handle pending signals and notify-resume requests.
- * do_notify_resume must be passed the latest pushed pt_regs, not
- * necessarily the "userspace" ones. Also, pt_regs->syscallno
- * must be set so that the syscall restart functionality works.
- */
-_work_notifysig:
- l.jal do_notify_resume
- l.ori r3,r1,0 /* pt_regs */
-
-_resume_userspace:
- DISABLE_INTERRUPTS(r3,r4)
- l.lwz r3,TI_FLAGS(r10)
- l.andi r3,r3,_TIF_WORK_MASK
- l.sfnei r3,0
- l.bf _work_pending
+ l.and r11,r11,r0
+ l.ori r11,r11,__NR_restart_syscall
+ l.j _syscall_check_trace_enter
l.nop
+1:
+ l.lwz r11,PT_ORIG_GPR11(r1)
+ /* Restore arg registers */
+ l.lwz r3,PT_GPR3(r1)
+ l.lwz r4,PT_GPR4(r1)
+ l.lwz r5,PT_GPR5(r1)
+ l.lwz r6,PT_GPR6(r1)
+ l.lwz r7,PT_GPR7(r1)
+ l.j _syscall_check_trace_enter
+ l.lwz r8,PT_GPR8(r1)
_restore_all:
RESTORE_ALL