atomic_dec.S revision 1.2
11.2Sad/* $NetBSD: atomic_dec.S,v 1.2 2007/11/29 17:09:32 ad Exp $ */ 21.2Sad 31.2Sad/*- 41.2Sad * Copyright (c) 2007 The NetBSD Foundation, Inc. 51.2Sad * All rights reserved. 61.2Sad * 71.2Sad * This code is derived from software contributed to The NetBSD Foundation 81.2Sad * by Jason R. Thorpe. 91.2Sad * 101.2Sad * Redistribution and use in source and binary forms, with or without 111.2Sad * modification, are permitted provided that the following conditions 121.2Sad * are met: 131.2Sad * 1. Redistributions of source code must retain the above copyright 141.2Sad * notice, this list of conditions and the following disclaimer. 151.2Sad * 2. Redistributions in binary form must reproduce the above copyright 161.2Sad * notice, this list of conditions and the following disclaimer in the 171.2Sad * documentation and/or other materials provided with the distribution. 181.2Sad * 3. All advertising materials mentioning features or use of this software 191.2Sad * must display the following acknowledgement: 201.2Sad * This product includes software developed by the NetBSD 211.2Sad * Foundation, Inc. and its contributors. 221.2Sad * 4. Neither the name of The NetBSD Foundation nor the names of its 231.2Sad * contributors may be used to endorse or promote products derived 241.2Sad * from this software without specific prior written permission. 251.2Sad * 261.2Sad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 271.2Sad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 281.2Sad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 291.2Sad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 301.2Sad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 311.2Sad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 321.2Sad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 331.2Sad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 341.2Sad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 351.2Sad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 361.2Sad * POSSIBILITY OF SUCH DAMAGE. 371.2Sad */ 381.2Sad 391.2Sad#include "atomic_op_asm.h" 401.2Sad 411.2Sad .text 421.2Sad 431.2SadENTRY_NOPROFILE(_atomic_dec_32) 441.2Sad movl %sp@(4), %a0 451.2Sad subql #1, %a0@ 461.2Sad rts 471.2SadATOMIC_OP_ALIAS(atomic_dec_32,_atomic_dec_32) 481.2SadATOMIC_OP_ALIAS(atomic_dec_uint,_atomic_dec_32) 491.2SadSTRONG_ALIAS(_atomic_dec_uint,_atomic_dec_32) 501.2SadATOMIC_OP_ALIAS(atomic_dec_ulong,_atomic_dec_32) 511.2SadSTRONG_ALIAS(_atomic_dec_ulong,_atomic_dec_32) 521.2SadATOMIC_OP_ALIAS(atomic_dec_ptr,_atomic_dec_32) 531.2SadSTRONG_ALIAS(_atomic_dec_ptr,_atomic_dec_32) 541.2Sad 551.2SadENTRY_NOPROFILE(_atomic_dec_32_nv) 561.2Sad movl %sp@(4), %a0 571.2Sad1: movl %a0@, %d0 581.2Sad movl %d0, %d1 591.2Sad subql #1, %d0 601.2Sad casl %d1, %d0, %a0@ 611.2Sad bne 1b 621.2Sad movl %d0, %a0 /* pointers return also in %a0 */ 631.2Sad rts 641.2SadATOMIC_OP_ALIAS(atomic_dec_32_nv,_atomic_dec_32_nv) 651.2SadATOMIC_OP_ALIAS(atomic_dec_uint_nv,_atomic_dec_32_nv) 661.2SadSTRONG_ALIAS(_atomic_dec_uint_nv,_atomic_dec_32_nv) 671.2SadATOMIC_OP_ALIAS(atomic_dec_ulong_nv,_atomic_dec_32_nv) 681.2SadSTRONG_ALIAS(_atomic_dec_ulong_nv,_atomic_dec_32_nv) 691.2SadATOMIC_OP_ALIAS(atomic_dec_ptr_nv,_atomic_dec_32_nv) 701.2SadSTRONG_ALIAS(_atomic_dec_ptr_nv,_atomic_dec_32_nv) 71