|  | // Copyright 2015 The Go Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file. | 
|  |  | 
|  | #include "textflag.h" | 
|  |  | 
|  | // TODO(minux): this is only valid for ARMv6+ | 
|  | // bool Armcas(int32 *val, int32 old, int32 new) | 
|  | // Atomically: | 
|  | //	if(*val == old){ | 
|  | //		*val = new; | 
|  | //		return 1; | 
|  | //	}else | 
|  | //		return 0; | 
|  | TEXT runtime∕internal∕atomic·Cas(SB),NOSPLIT,$0 | 
|  | B	runtime∕internal∕atomic·armcas(SB) | 
|  |  | 
|  | TEXT runtime∕internal∕atomic·Casp1(SB),NOSPLIT,$0 | 
|  | B	runtime∕internal∕atomic·Cas(SB) | 
|  |  | 
|  |  |