ia64/linux-2.6.18-xen.hg

view arch/m68knommu/lib/semaphore.S @ 0:831230e53067

Import 2.6.18 from kernel.org tarball.
author Ian Campbell <ian.campbell@xensource.com>
date Wed Apr 11 14:15:44 2007 +0100 (2007-04-11)
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1 /*
2 * linux/arch/m68k/lib/semaphore.S
3 *
4 * Copyright (C) 1996 Linus Torvalds
5 *
6 * m68k version by Andreas Schwab
7 *
8 * MAR/1999 -- modified to support ColdFire (gerg@snapgear.com)
9 */
11 #include <linux/linkage.h>
12 #include <asm/semaphore.h>
14 /*
15 * "down_failed" is called with the eventual return address
16 * in %a0, and the address of the semaphore in %a1. We need
17 * to increment the number of waiters on the semaphore,
18 * call "__down()", and then eventually return to try again.
19 */
20 ENTRY(__down_failed)
21 #ifdef CONFIG_COLDFIRE
22 subl #12,%sp
23 moveml %a0/%d0/%d1,(%sp)
24 #else
25 moveml %a0/%d0/%d1,-(%sp)
26 #endif
27 movel %a1,-(%sp)
28 jbsr __down
29 movel (%sp)+,%a1
30 movel (%sp)+,%d0
31 movel (%sp)+,%d1
32 rts
34 ENTRY(__down_failed_interruptible)
35 movel %a0,-(%sp)
36 movel %d1,-(%sp)
37 movel %a1,-(%sp)
38 jbsr __down_interruptible
39 movel (%sp)+,%a1
40 movel (%sp)+,%d1
41 rts
43 ENTRY(__up_wakeup)
44 #ifdef CONFIG_COLDFIRE
45 subl #12,%sp
46 moveml %a0/%d0/%d1,(%sp)
47 #else
48 moveml %a0/%d0/%d1,-(%sp)
49 #endif
50 movel %a1,-(%sp)
51 jbsr __up
52 movel (%sp)+,%a1
53 movel (%sp)+,%d0
54 movel (%sp)+,%d1
55 rts
57 ENTRY(__down_failed_trylock)
58 movel %a0,-(%sp)
59 movel %d1,-(%sp)
60 movel %a1,-(%sp)
61 jbsr __down_trylock
62 movel (%sp)+,%a1
63 movel (%sp)+,%d1
64 movel (%sp)+,%a0
65 rts