diff options
Diffstat (limited to '')
| -rw-r--r-- | src/libs/xpcom18a4/nsprpub/pr/src/md/unix/os_Irix.s | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/os_Irix.s b/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/os_Irix.s new file mode 100644 index 00000000..7a4b186f --- /dev/null +++ b/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/os_Irix.s @@ -0,0 +1,163 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* +* 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 Netscape are +* Copyright (C) 1998-2000 Netscape Communications Corporation. All +* Rights Reserved. +* +* Contributor(s): +* +* Alternatively, the contents of this file may be used under the +* terms of the GNU General Public License Version 2 or later (the +* "GPL"), in which case the provisions of the GPL are applicable +* instead of those above. If you wish to allow use of your +* version of this file only under the terms of the GPL and not to +* allow others to use your version of this file under the MPL, +* indicate your decision by deleting the provisions above and +* replace them with the notice and other provisions required by +* the GPL. If you do not delete the provisions above, a recipient +* may use your version of this file under either the MPL or the +* GPL. +*/ + +/* + * 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 */ |