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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: release/9.1.0/sys/cddl/contrib/opensolaris/common/atomic/powerpc64/opensolaris_atomic.S 219089 2011-02-27 19:41:40Z pjd $ */ #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