diff options
Diffstat (limited to 'arch/m68knommu/lib/semaphore.S')
| -rw-r--r-- | arch/m68knommu/lib/semaphore.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/m68knommu/lib/semaphore.S b/arch/m68knommu/lib/semaphore.S new file mode 100644 index 00000000000..76765362fea --- /dev/null +++ b/arch/m68knommu/lib/semaphore.S @@ -0,0 +1,67 @@ +/* + * linux/arch/m68k/lib/semaphore.S + * + * Copyright (C) 1996 Linus Torvalds + * + * m68k version by Andreas Schwab + * + * MAR/1999 -- modified to support ColdFire (gerg@snapgear.com) + */ + +#include <linux/linkage.h> +#include <linux/config.h> +#include <asm/semaphore.h> + +/* + * "down_failed" is called with the eventual return address + * in %a0, and the address of the semaphore in %a1. We need + * to increment the number of waiters on the semaphore, + * call "__down()", and then eventually return to try again. + */ +ENTRY(__down_failed) +#ifdef CONFIG_COLDFIRE + subl #12,%sp + moveml %a0/%d0/%d1,(%sp) +#else + moveml %a0/%d0/%d1,-(%sp) +#endif + movel %a1,-(%sp) + jbsr __down + movel (%sp)+,%a1 + movel (%sp)+,%d0 + movel (%sp)+,%d1 + rts + +ENTRY(__down_failed_interruptible) + movel %a0,-(%sp) + movel %d1,-(%sp) + movel %a1,-(%sp) + jbsr __down_interruptible + movel (%sp)+,%a1 + movel (%sp)+,%d1 + rts + +ENTRY(__up_wakeup) +#ifdef CONFIG_COLDFIRE + subl #12,%sp + moveml %a0/%d0/%d1,(%sp) +#else + moveml %a0/%d0/%d1,-(%sp) +#endif + movel %a1,-(%sp) + jbsr __up + movel (%sp)+,%a1 + movel (%sp)+,%d0 + movel (%sp)+,%d1 + 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 + |