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/* $OpenBSD */
/* ==== machdep.h ============================================================
* Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
*
* $ I d: engine-m68000-netbsd.h,v 1.51 1994/11/08 15:39:15 proven Exp $
*
*/
#include <unistd.h>
#include <setjmp.h>
#include <sys/time.h>
/*
* The first machine dependent functions are the SEMAPHORES
* needing the test and set instruction.
*/
#define SEMAPHORE_CLEAR 0
#define SEMAPHORE_SET 0x80;
#define SEMAPHORE_TEST_AND_SET(lock) \
({ \
volatile long temp = SEMAPHORE_CLEAR; \
__asm__ volatile( \
"tas %2; bpl 0f; movl #1,%0; 0:" \
:"=r" (temp) \
:"0" (temp),"m" (*lock)); \
temp; \
})
#define SEMAPHORE_RESET(lock) *lock = SEMAPHORE_CLEAR
/*
* Min pthread stacksize
*/
#define PTHREAD_STACK_MIN 1024
/*
* New functions
*/
__BEGIN_DECLS
#if defined(PTHREAD_KERNEL)
int machdep_save_state __P((void));
#endif
__END_DECLS
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