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/*
* linux/arch/i386/lib/semaphore.S
*
* Copyright (C) 1996 Linus Torvalds
*/
#include <linux/linkage.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)
pushl %eax /* save %eax */
pushl %edx /* save %edx */
pushl %ecx /* save %ecx (and argument) */
call SYMBOL_NAME(__down)
popl %ecx /* restore %ecx (count on __down not changing it) */
popl %edx /* restore %edx */
popl %eax /* restore %eax */
ret
/* Don't save/restore %eax, because that will be our return value */
ENTRY(__down_failed_interruptible)
pushl %edx /* save %edx */
pushl %ecx /* save %ecx (and argument) */
call SYMBOL_NAME(__down_interruptible)
popl %ecx /* restore %ecx (count on __down_interruptible not changing it) */
popl %edx /* restore %edx */
ret
ENTRY(__up_wakeup)
pushl %eax /* save %eax */
pushl %edx /* save %edx */
pushl %ecx /* save %ecx (and argument) */
call SYMBOL_NAME(__up)
popl %ecx /* restore %ecx (count on __up not changing it) */
popl %edx /* restore %edx */
popl %eax /* restore %eax */
ret
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