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/*-
* Copyright (C) 2010 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <machine/asm.h>
ENTRY(atomic_add_64_nv)
1: ldarx %r5,0,%r3
add %r5,%r4,%r5
stdcx. %r5,0,%r3
bne- 1b
mr %r3,%r5
blr
ENTRY(atomic_cas_32)
1: lwarx %r6,0,%r3
cmplw %r6,%r4
bne 2f
stwcx. %r5,0,%r3
bne- 1b
b 3f
2: stwcx. %r6,0,%r3 /* clear reservation */
3: mr %r3,%r6
blr
ENTRY(atomic_cas_64)
1: ldarx %r6,0,%r3
cmpld %r6,%r4
bne 2f
stdcx. %r5,0,%r3
bne- 1b
b 3f
2: stdcx. %r6,0,%r3 /* clear reservation */
3: mr %r3,%r6
blr
ENTRY(atomic_or_8_nv)
li %r6,3
andc. %r6,%r3,%r6 /* r6 = r3 & ~4 */
addi %r7,%r6,3
sub %r7,%r7,%r3 /* offset in r7 */
sldi %r7,%r7,3 /* bits to shift in r7 */
rlwinm %r4,%r4,0,24,31 /* mask and rotate the argument */
slw %r4,%r4,%r7
1: lwarx %r5,0,%r6
or %r5,%r4,%r5
stwcx. %r5,0,%r6
bne- 1b
srw %r3,%r5,%r7
rlwinm %r3,%r3,0,24,31 /* mask return value */
blr
ENTRY(membar_producer)
eieio
blr
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