diff options
Diffstat (limited to 'third_party/js-1.7/jslocko.asm')
| -rw-r--r-- | third_party/js-1.7/jslocko.asm | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/third_party/js-1.7/jslocko.asm b/third_party/js-1.7/jslocko.asm new file mode 100644 index 0000000..95353ba --- /dev/null +++ b/third_party/js-1.7/jslocko.asm @@ -0,0 +1,60 @@ +; -*- Mode: asm; tab-width: 8; c-basic-offset: 4 -*- + +; ***** BEGIN LICENSE BLOCK ***** +; Version: MPL 1.1/GPL 2.0/LGPL 2.1 +; +; The contents of this file are subject to the Mozilla Public License Version +; 1.1 (the "License"); you may not use this file except in compliance with +; the License. You may obtain a copy of the License at +; http://www.mozilla.org/MPL/ +; +; Software distributed under the License is distributed on an "AS IS" basis, +; WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License +; for the specific language governing rights and limitations under the +; License. +; +; The Original Code is an OS/2 implementation of js_CompareAndSwap in assembly. +; +; The Initial Developer of the Original Code is +; IBM Corporation. +; Portions created by the Initial Developer are Copyright (C) 2001 +; the Initial Developer. All Rights Reserved. +; +; Contributor(s): +; +; Alternatively, the contents of this file may be used under the terms of +; either the GNU General Public License Version 2 or later (the "GPL"), or +; the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), +; in which case the provisions of the GPL or the LGPL are applicable instead +; of those above. If you wish to allow use of your version of this file only +; under the terms of either the GPL or the LGPL, and not to allow others to +; use your version of this file under the terms of the MPL, indicate your +; decision by deleting the provisions above and replace them with the notice +; and other provisions required by the GPL or the LGPL. If you do not delete +; the provisions above, a recipient may use your version of this file under +; the terms of any one of the MPL, the GPL or the LGPL. +; +; ***** END LICENSE BLOCK ***** + + .486P + .MODEL FLAT, OPTLINK + .STACK + + .CODE + +;;;--------------------------------------------------------------------- +;;; int _Optlink js_CompareAndSwap(jsword *w, jsword ov, jsword nv) +;;;--------------------------------------------------------------------- +js_CompareAndSwap PROC OPTLINK EXPORT + push ebx + mov ebx, eax + mov eax, edx + mov edx, ebx + lock cmpxchg [ebx], ecx + sete al + and eax, 1h + pop ebx + ret +js_CompareAndSwap endp + + END |
