atomic_add.S revision 1.1.2.1
1 /* $NetBSD: atomic_add.S,v 1.1.2.1 2007/04/22 04:14:18 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "atomic_op_asm.h" 40 41 .text 42 .align 2 43 44 ENTRY_NOPROFILE(_atomic_add_8) 45 movl %sp@(4), %a0 46 movb %sp@(11), %d0 47 addb %d0, %a0@ 48 rts 49 ATOMIC_OP_ALIAS(atomic_add_8,_atomic_add_8) 50 ATOMIC_OP_ALIAS(atomic_add_char,_atomic_add_8) 51 52 ENTRY_NOPROFILE(_atomic_add_8_nv) 53 movl %sp@(4), %a0 54 1: movb %a0@, %d0 55 movb %d0, %d1 56 addb %sp@(11), %d0 57 casb %d1, %d0, %a0@ 58 bne 1b 59 andl #0xff, %d0 60 rts 61 ATOMIC_OP_ALIAS(atomic_add_8_nv,_atomic_add_8_nv) 62 ATOMIC_OP_ALIAS(atomic_add_char_nv,_atomic_add_8_nv) 63 64 ENTRY_NOPROFILE(_atomic_add_16) 65 movl %sp@(4), %a0 66 movw %sp@(10), %d0 67 addw %d0, %a0@ 68 rts 69 ATOMIC_OP_ALIAS(atomic_add_16,_atomic_add_16) 70 ATOMIC_OP_ALIAS(atomic_add_short,_atomic_add_16) 71 72 ENTRY_NOPROFILE(_atomic_add_16_nv) 73 movl %sp@(4), %a0 74 1: movw %a0@, %d0 75 movw %d0, %d1 76 addw %sp@(10), %d0 77 casw %d1, %d0, %a0@ 78 bne 1b 79 andl #0xffff, %d0 80 rts 81 ATOMIC_OP_ALIAS(atomic_add_16_nv,_atomic_add_16_nv) 82 ATOMIC_OP_ALIAS(atomic_add_short_nv,_atomic_add_16_nv) 83 84 ENTRY_NOPROFILE(_atomic_add_32) 85 movl %sp@(4), %a0 86 movl %sp@(8), %d0 87 addl %d0, %a0@ 88 rts 89 ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32) 90 ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32) 91 ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_32) 92 ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_32) 93 94 ENTRY_NOPROFILE(_atomic_add_32_nv) 95 movl %sp@(4), %a0 96 1: movl %a0@, %d0 97 movl %d0, %d1 98 addl %sp@(8), %d0 99 casl %d1, %d0, %a0@ 100 bne 1b 101 movl %d0, %a0 /* pointers return also in %a0 */ 102 rts 103 ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv) 104 ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv) 105 ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_32_nv) 106 ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_32_nv) 107
Indexes created Tue Sep 30 11:09:46 GMT 2025