1 files changed, 53 insertions, 0 deletions

diff --git a/arch/m68k/lib/semaphore.S b/arch/m68k/lib/semaphore.S
new file mode 100644
index 000000000000..0215624c1602
--- /dev/null
+++ b/arch/m68k/lib/semaphore.S
@@ -0,0 +1,53 @@
+/*
+ *  linux/arch/m68k/lib/semaphore.S
+ *
+ *  Copyright (C) 1996  Linus Torvalds
+ *
+ *  m68k version by Andreas Schwab
+ */
+
+#include <linux/linkage.h>
+#include <asm/semaphore.h>
+
+/*
+ * The semaphore operations have a special calling sequence that
+ * allow us to do a simpler in-line version of them. These routines
+ * need to convert that sequence back into the C sequence when
+ * there is contention on the semaphore.
+ */
+ENTRY(__down_failed)
+        moveml %a0/%d0/%d1,-(%sp)
+        movel %a1,-(%sp)
+        jbsr __down
+        movel (%sp)+,%a1
+        moveml (%sp)+,%a0/%d0/%d1
+        rts
+
+ENTRY(__down_failed_interruptible)
+        movel %a0,-(%sp)
+        movel %d1,-(%sp)
+        movel %a1,-(%sp)
+        jbsr __down_interruptible
+        movel (%sp)+,%a1
+        movel (%sp)+,%d1
+        movel (%sp)+,%a0
+        rts
+
+ENTRY(__down_failed_trylock)
+        movel %a0,-(%sp)
+        movel %d1,-(%sp)
+        movel %a1,-(%sp)
+        jbsr __down_trylock
+        movel (%sp)+,%a1
+        movel (%sp)+,%d1
+        movel (%sp)+,%a0
+        rts
+
+ENTRY(__up_wakeup)
+        moveml %a0/%d0/%d1,-(%sp)
+        movel %a1,-(%sp)
+        jbsr __up
+        movel (%sp)+,%a1
+        moveml (%sp)+,%a0/%d0/%d1
+        rts
+