sh: switch to generic kernel_thread()/kernel_execve()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S
index 7e605b95592a..0c8d0377d40b 100644
--- a/arch/sh/kernel/cpu/sh5/entry.S
+++ b/arch/sh/kernel/cpu/sh5/entry.S
@@ -1228,6 +1228,25 @@ ret_from_fork:
         pta     ret_from_syscall, tr0
         blink   tr0, ZERO
 
+.global ret_from_kernel_thread
+ret_from_kernel_thread:
+
+        movi    schedule_tail,r5
+        ori     r5, 1, r5
+        ptabs   r5, tr0
+        blink   tr0, LINK
+
+        ld.q    SP, FRAME_R(2), r2
+        ld.q    SP, FRAME_R(3), r3
+        ptabs   r3, tr0
+        blink   tr0, LINK
+
+        ld.q    SP, FRAME_S(FSPC), r2
+        addi    r2, 4, r2               /* Move PC, being pre-execution event */
+        st.q    SP, FRAME_S(FSPC), r2
+        pta     ret_from_syscall, tr0
+        blink   tr0, ZERO
+
 syscall_allowed:
         /* Use LINK to deflect the exit point, default is syscall_ret */
         pta     syscall_ret, tr0