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semaphore.S
Package: linux-2.4.20.tar.gz　[view]
Upload User: jlfgdled
Upload Date: 2013-04-10
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Code Size: 1k
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Linux-Unix program

Development Platform:

Unix_Linux

semaphore.S：Code Content
  1. /*
  2.  *  linux/arch/m68k/lib/semaphore.S
  3.  *
  4.  *  Copyright (C) 1996  Linus Torvalds
  5.  *
  6.  *  m68k version by Andreas Schwab
  7.  */
  9. #include <linux/linkage.h>
  10. #include <asm/semaphore.h>
  12. /*
  13.  * The semaphore operations have a special calling sequence that
  14.  * allow us to do a simpler in-line version of them. These routines
  15.  * need to convert that sequence back into the C sequence when
  16.  * there is contention on the semaphore.
  17.  */
  18. ENTRY(__down_failed)
  19. moveml %a0/%d0/%d1,-(%sp)
  20. movel %a1,-(%sp)
  21. jbsr SYMBOL_NAME(__down)
  22. movel (%sp)+,%a1
  23. moveml (%sp)+,%a0/%d0/%d1
  24. rts
  26. ENTRY(__down_failed_interruptible)
  27. movel %a0,-(%sp)
  28. movel %d1,-(%sp)
  29. movel %a1,-(%sp)
  30. jbsr SYMBOL_NAME(__down_interruptible)
  31. movel (%sp)+,%a1
  32. movel (%sp)+,%d1
  33. movel (%sp)+,%a0
  34. rts
  36. ENTRY(__down_failed_trylock)
  37. movel %a0,-(%sp)
  38. movel %d1,-(%sp)
  39. movel %a1,-(%sp)
  40. jbsr SYMBOL_NAME(__down_trylock)
  41. movel (%sp)+,%a1
  42. movel (%sp)+,%d1
  43. movel (%sp)+,%a0
  44. rts
  46. ENTRY(__up_wakeup)
  47. moveml %a0/%d0/%d1,-(%sp)
  48. movel %a1,-(%sp)
  49. jbsr SYMBOL_NAME(__up)
  50. movel (%sp)+,%a1
  51. moveml (%sp)+,%a0/%d0/%d1
  52. rts