sh: __NR_restart_syscall support.

This implements support for __NR_restart_syscall.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/sh/kernel/entry.S b/arch/sh/kernel/entry.S
index b087d34dba35..fcbf50d4ee10 100644
--- a/arch/sh/kernel/entry.S
+++ b/arch/sh/kernel/entry.S
@@ -376,6 +376,7 @@ work_notifysig:
         bt/s    restore_all
          mov    r15, r4
         mov     #0, r5
+        mov     r12, r6         ! set arg2(save_r0)
         mov.l   2f, r1
         mova    restore_all, r0
         jmp     @r1
@@ -534,6 +535,7 @@ syscall_call:
         mov.l   @r9, r8
         jsr     @r8             ! jump to specific syscall handler
          nop
+        mov.l   @(OFF_R0,r15), r12              ! save r0
         mov.l   r0, @(OFF_R0,r15)               ! save the return value
         !
 syscall_exit: