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67 lines
1.2 KiB
67 lines
1.2 KiB
20 years ago
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/*
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* linux/arch/m68k/lib/semaphore.S
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*
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* Copyright (C) 1996 Linus Torvalds
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*
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* m68k version by Andreas Schwab
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*
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* MAR/1999 -- modified to support ColdFire (gerg@snapgear.com)
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*/
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#include <linux/linkage.h>
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#include <asm/semaphore.h>
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/*
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* "down_failed" is called with the eventual return address
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* in %a0, and the address of the semaphore in %a1. We need
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* to increment the number of waiters on the semaphore,
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* call "__down()", and then eventually return to try again.
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*/
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ENTRY(__down_failed)
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#ifdef CONFIG_COLDFIRE
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subl #12,%sp
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moveml %a0/%d0/%d1,(%sp)
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#else
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moveml %a0/%d0/%d1,-(%sp)
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#endif
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movel %a1,-(%sp)
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jbsr __down
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movel (%sp)+,%a1
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movel (%sp)+,%d0
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movel (%sp)+,%d1
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rts
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ENTRY(__down_failed_interruptible)
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movel %a0,-(%sp)
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movel %d1,-(%sp)
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movel %a1,-(%sp)
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jbsr __down_interruptible
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movel (%sp)+,%a1
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movel (%sp)+,%d1
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rts
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ENTRY(__up_wakeup)
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#ifdef CONFIG_COLDFIRE
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subl #12,%sp
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moveml %a0/%d0/%d1,(%sp)
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#else
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moveml %a0/%d0/%d1,-(%sp)
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#endif
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movel %a1,-(%sp)
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jbsr __up
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movel (%sp)+,%a1
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movel (%sp)+,%d0
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movel (%sp)+,%d1
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rts
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ENTRY(__down_failed_trylock)
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movel %a0,-(%sp)
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movel %d1,-(%sp)
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movel %a1,-(%sp)
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jbsr __down_trylock
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movel (%sp)+,%a1
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movel (%sp)+,%d1
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movel (%sp)+,%a0
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rts
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