xref: /dragonfly/test/cpuperf/cpu_cmpexg.S (revision 86d7f5d305c6adaa56ff4582ece9859d73106103) 
1/* $DragonFly: src/test/cpuperf/cpu_cmpexg.S,v 1.1 2004/02/09 18:08:54 dillon Exp $ */
2
3          .globl    test_dummy
4          .globl    test_load
5          .globl    test_str
6
7          .p2align 5
8test_dummy:
9          movl      4(%esp),%ecx
10          movl      $0,%edx
11          movl      $1,%eax
12          movl      %ebx,%edx
13          movl      $0,(%ecx)
14          addl      $3,%eax
15          ret
16
17          .p2align 5
18test_load:
19          movl      4(%esp),%ecx
20          movl      $0,%edx
21          movl      $1,%eax
22          cmpxchgl  %edx,(%ecx)         /* instruction under test */
23          movl      %ebx,%edx
24          movl      $0,(%ecx)
25          addl      $3,%eax
26          ret
27
28          .p2align 5
29test_str:
30          .asciz    "non-locked cmpxchgl (successful exchange) in pipeline"
31
32