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Diffstat (limited to 'mozilla/nsprpub/pr/src/md/unix/os_Irix.s')
| -rw-r--r-- | mozilla/nsprpub/pr/src/md/unix/os_Irix.s | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/md/unix/os_Irix.s b/mozilla/nsprpub/pr/src/md/unix/os_Irix.s new file mode 100644 index 0000000..e726194 --- /dev/null +++ b/mozilla/nsprpub/pr/src/md/unix/os_Irix.s @@ -0,0 +1,166 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** 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 the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-2000 + * 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 ***** */ + +/* + * Atomically add a new element to the top of the stack + * + * usage : PR_StackPush(listp, elementp); + * ----------------------- + */ + +#include "md/_irix.h" +#ifdef _PR_HAVE_ATOMIC_CAS + +#include <sys/asm.h> +#include <sys/regdef.h> + +LEAF(PR_StackPush) + +retry_push: +.set noreorder + lw v0,0(a0) + li t1,1 + beq v0,t1,retry_push + move t0,a1 + + ll v0,0(a0) + beq v0,t1,retry_push + nop + sc t1,0(a0) + beq t1,0,retry_push + nop + sw v0,0(a1) + sync + sw t0,0(a0) + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + jr ra + nop + +END(PR_StackPush) + +/* + * + * Atomically remove the element at the top of the stack + * + * usage : elemep = PR_StackPop(listp); + * + */ + +LEAF(PR_StackPop) +retry_pop: +.set noreorder + + + lw v0,0(a0) + li t1,1 + beq v0,0,done + nop + beq v0,t1,retry_pop + nop + + ll v0,0(a0) + beq v0,0,done + nop + beq v0,t1,retry_pop + nop + sc t1,0(a0) + beq t1,0,retry_pop + nop + lw t0,0(v0) + sw t0,0(a0) +done: + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + jr ra + nop + +END(PR_StackPop) + +#endif /* _PR_HAVE_ATOMIC_CAS */ |