diff options
Diffstat (limited to 'arch/m68k/lib/semaphore.S')
| -rw-r--r-- | arch/m68k/lib/semaphore.S | 53 |
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 + |