1/* $NetBSD: atomic_xor.S,v 1.3 2014/06/23 21:53:45 joerg 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "atomic_op_asm.h" 33 34 .text 35 36ENTRY(_atomic_xor_32) 37 movl 4(%sp), %a0 38 movl 8(%sp), %d0 39 eorl %d0, (%a0) 40 rts 41END(_atomic_xor_32) 42 43ATOMIC_OP_ALIAS(atomic_xor_32,_atomic_xor_32) 44ATOMIC_OP_ALIAS(atomic_xor_uint,_atomic_xor_32) 45STRONG_ALIAS(_atomic_xor_uint,_atomic_xor_32) 46ATOMIC_OP_ALIAS(atomic_xor_ulong,_atomic_xor_32) 47STRONG_ALIAS(_atomic_xor_ulong,_atomic_xor_32) 48ATOMIC_OP_ALIAS(atomic_xor_ptr,_atomic_xor_32) 49STRONG_ALIAS(_atomic_xor_ptr,_atomic_xor_32) 50 51ENTRY(_atomic_xor_32_nv) 52 movl 4(%sp), %a0 531: movl (%a0), %d0 54 movl %d0, %d1 55 movl 8(%sp), %d2 56 eorl %d2, %d0 57 casl %d1, %d0, (%a0) 58 bne 1b 59 movl %d0, %a0 60 rts 61END(_atomic_xor_32_nv) 62 63ATOMIC_OP_ALIAS(atomic_xor_32_nv,_atomic_xor_32_nv) 64ATOMIC_OP_ALIAS(atomic_xor_uint_nv,_atomic_xor_32_nv) 65STRONG_ALIAS(_atomic_xor_uint_nv,_atomic_xor_32_nv) 66ATOMIC_OP_ALIAS(atomic_xor_ulong_nv,_atomic_xor_32_nv) 67STRONG_ALIAS(_atomic_xor_ulong_nv,_atomic_xor_32_nv) 68ATOMIC_OP_ALIAS(atomic_xor_ptr_nv,_atomic_xor_32_nv) 69STRONG_ALIAS(_atomic_xor_ptr_nv,_atomic_xor_32_nv) 70CRT_ALIAS(__sync_xor_and_fetch_4, _atomic_xor_32_nv) 71 72 73ENTRY(__sync_fetch_and_xor_4) 74 movl 4(%sp), %a0 751: movl (%a0), %d0 76 movl %d0, %d1 77 movl 8(%sp), %d2 78 eorl %d2, %d1 79 casl %d0, %d1, (%a0) 80 bne 1b 81 movl %d0, %a0 82 rts 83END(__sync_fetch_and_xor_4) 84 85 86ENTRY(_atomic_xor_16_nv) 87 movl 4(%sp), %a0 881: movw (%a0), %d0 89 movw %d0, %d1 90 movw 8(%sp), %d2 91 eorw %d2, %d0 92 casw %d1, %d0, (%a0) 93 bne 1b 94 rts 95END(_atomic_xor_16_nv) 96CRT_ALIAS(__sync_xor_and_fetch_2, _atomic_xor_16_nv) 97 98ENTRY(__sync_fetch_and_xor_2) 99 movl 4(%sp), %a0 1001: movw (%a0), %d0 101 movw %d0, %d1 102 movw 8(%sp), %d2 103 eorw %d2, %d1 104 casw %d0, %d1, (%a0) 105 bne 1b 106 rts 107END(__sync_fetch_and_xor_2) 108 109 110ENTRY(_atomic_xor_8_nv) 111 movl 4(%sp), %a0 1121: movb (%a0), %d0 113 movb %d0, %d1 114 movb 8(%sp), %d2 115 eorb %d2, %d0 116 casb %d1, %d0, (%a0) 117 bne 1b 118 rts 119END(_atomic_xor_8_nv) 120CRT_ALIAS(__sync_xor_and_fetch_1, _atomic_xor_8_nv) 121 122ENTRY(__sync_fetch_and_xor_1) 123 movl 4(%sp), %a0 1241: movb (%a0), %d0 125 movb %d0, %d1 126 movb 8(%sp), %d2 127 eorb %d2, %d1 128 casb %d0, %d1, (%a0) 129 bne 1b 130 rts 131END(__sync_fetch_and_xor_1) 132 133CRT_ALIAS(__atomic_fetch_xor_1,__sync_fetch_and_xor_1) 134CRT_ALIAS(__atomic_fetch_xor_2,__sync_fetch_and_xor_2) 135CRT_ALIAS(__atomic_fetch_xor_4,__sync_fetch_and_xor_4) 136