1COMMENT | -*- Mode: asm; tab-width: 8; c-basic-offset: 4 -*- 2***** BEGIN LICENSE BLOCK ***** 3Version: MPL 1.1/GPL 2.0/LGPL 2.1 4 5The contents of this file are subject to the Mozilla Public License Version 61.1 (the "License"); you may not use this file except in compliance with 7the License. You may obtain a copy of the License at 8http://www.mozilla.org/MPL/ 9 10Software distributed under the License is distributed on an "AS IS" basis, 11WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12for the specific language governing rights and limitations under the 13License. 14 15The Original Code is an OS/2 implementation of js_CompareAndSwap in assembly 16 17The Initial Developer of the Original Code is IBM Corporation. 18Portions created by the Initial Developer are Copyright (C) 2001 19the Initial Developer. All Rights Reserved. 20 21Contributor(s): 22 23Alternatively, the contents of this file may be used under the terms of 24either the GNU General Public License Version 2 or later (the "GPL"), or 25the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 26in which case the provisions of the GPL or the LGPL are applicable instead 27of those above. If you wish to allow use of your version of this file only 28under the terms of either the GPL or the LGPL, and not to allow others to 29use your version of this file under the terms of the MPL, indicate your 30decision by deleting the provisions above and replace them with the notice 31and other provisions required by the GPL or the LGPL. If you do not delete 32the provisions above, a recipient may use your version of this file under 33the terms of any one of the MPL, the GPL or the LGPL. 34 35***** END LICENSE BLOCK ***** 36 | 37 38 .486P 39 .MODEL FLAT, OPTLINK 40 .STACK 41 42 .CODE 43 44;;;--------------------------------------------------------------------- 45;;; int _Optlink js_CompareAndSwap(jsword *w, jsword ov, jsword nv) 46;;;--------------------------------------------------------------------- 47js_CompareAndSwap PROC OPTLINK EXPORT 48 push ebx 49 mov ebx, eax 50 mov eax, edx 51 mov edx, ebx 52 lock cmpxchg [ebx], ecx 53 sete al 54 and eax, 1h 55 pop ebx 56 ret 57js_CompareAndSwap endp 58 59 END 60