libpthread/nptl/sysdeps/csky/pthread_spin_lock.S


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#include <sysdep.h>

	.text
	.align	4

ENTRY (pthread_spin_lock)
	mov	a2, a0
1:
	movi	a0, 0
	movi	a1, 1
	trap	2		// trap 2 use to cmpxchg
	cmpnei	a0, 0
	bt	1b
	movi	a0, 0
	jmp	r15

    /* TODO */
END (pthread_spin_lock)