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HAMMER 14/many - historical access cleanup, itimes, bug fixes.
[dragonfly.git]
/
test
/
cpuperf
/
cpu_lcmpexg.S
blob
2c6cfa8cb029fc668ce217782e9ea978de29582a
1
/* $DragonFly: src/test/cpuperf/cpu_lcmpexg.S,v 1.1 2004/02/09 18:08:54 dillon Exp $ */
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.globl test_dummy
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.globl test_load
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.globl test_str
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.p2align 5
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test_dummy:
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movl 4(%esp),%ecx
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movl $0,%edx
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movl $1,%eax
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movl %ebx,%edx
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movl $0,(%ecx)
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addl $3,%eax
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ret
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.p2align 5
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test_load:
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movl 4(%esp),%ecx
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movl $0,%edx
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movl $1,%eax
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lock; cmpxchgl %edx,(%ecx) /* instruction under test */
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movl %ebx,%edx
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movl $0,(%ecx)
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addl $3,%eax
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ret
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.p2align 5
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test_str:
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.asciz "bus-locked cmpxchgl (successful exchange) in pipeline"
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