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-rw-r--r--arch/m68k/lib/semaphore.S53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/m68k/lib/semaphore.S b/arch/m68k/lib/semaphore.S
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+++ b/arch/m68k/lib/semaphore.S
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+/*
+ * 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
+
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