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Diffstat (limited to 'arch/sh/kernel/cpu/sh5/entry.S')
-rw-r--r--arch/sh/kernel/cpu/sh5/entry.S19
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