1 ! Actually sparc32 assembly. 
2 ! Debian's sparc64 port is a 32-bit user space.
3 
4 	.section	".text", #alloc, #execinstr
5 	.align		8
6 	.skip		16
7 	.global _tas
8 !	.type	_tas,2
9 _tas:
10 	or	%g0,1,%o1
11 	swap	[%o0],%o1	! o0 points to lock; key is first word
12 	retl
13 	mov	%o1, %o0
14 
15    	.size	_tas,(.-_tas)
16