1 /* $NetBSD: atomic_xor.S,v 1.4 2022/04/06 22:47:56 riastradh 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 36 ENTRY(_atomic_xor_32) 37 movl 4(%sp), %a0 38 movl 8(%sp), %d0 39 eorl %d0, (%a0) 40 rts 41 END(_atomic_xor_32) 42 43 ATOMIC_OP_ALIAS(atomic_xor_32,_atomic_xor_32) 44 ATOMIC_OP_ALIAS(atomic_xor_uint,_atomic_xor_32) 45 STRONG_ALIAS(_atomic_xor_uint,_atomic_xor_32) 46 ATOMIC_OP_ALIAS(atomic_xor_ulong,_atomic_xor_32) 47 STRONG_ALIAS(_atomic_xor_ulong,_atomic_xor_32) 48 ATOMIC_OP_ALIAS(atomic_xor_ptr,_atomic_xor_32) 49 STRONG_ALIAS(_atomic_xor_ptr,_atomic_xor_32) 50 51 ENTRY(_atomic_xor_32_nv) 52 movl 4(%sp), %a0 53 1: 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 61 END(_atomic_xor_32_nv) 62 63 ATOMIC_OP_ALIAS(atomic_xor_32_nv,_atomic_xor_32_nv) 64 ATOMIC_OP_ALIAS(atomic_xor_uint_nv,_atomic_xor_32_nv) 65 STRONG_ALIAS(_atomic_xor_uint_nv,_atomic_xor_32_nv) 66 ATOMIC_OP_ALIAS(atomic_xor_ulong_nv,_atomic_xor_32_nv) 67 STRONG_ALIAS(_atomic_xor_ulong_nv,_atomic_xor_32_nv) 68 ATOMIC_OP_ALIAS(atomic_xor_ptr_nv,_atomic_xor_32_nv) 69 STRONG_ALIAS(_atomic_xor_ptr_nv,_atomic_xor_32_nv) 70 CRT_ALIAS(__sync_xor_and_fetch_4, _atomic_xor_32_nv) 71 72 73 ENTRY(__sync_fetch_and_xor_4) 74 movl 4(%sp), %a0 75 1: 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 83 END(__sync_fetch_and_xor_4) 84 85 86 ENTRY(_atomic_xor_16_nv) 87 movl 4(%sp), %a0 88 1: 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 95 END(_atomic_xor_16_nv) 96 CRT_ALIAS(__sync_xor_and_fetch_2, _atomic_xor_16_nv) 97 98 ENTRY(__sync_fetch_and_xor_2) 99 movl 4(%sp), %a0 100 1: 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 107 END(__sync_fetch_and_xor_2) 108 109 110 ENTRY(_atomic_xor_8_nv) 111 movl 4(%sp), %a0 112 1: 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 119 END(_atomic_xor_8_nv) 120 CRT_ALIAS(__sync_xor_and_fetch_1, _atomic_xor_8_nv) 121 122 ENTRY(__sync_fetch_and_xor_1) 123 movl 4(%sp), %a0 124 1: 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 131 END(__sync_fetch_and_xor_1) 132 133 CRT_ALIAS(__atomic_fetch_xor_1,__sync_fetch_and_xor_1) 134 CRT_ALIAS(__atomic_fetch_xor_2,__sync_fetch_and_xor_2) 135 CRT_ALIAS(__atomic_fetch_xor_4,__sync_fetch_and_xor_4) 136
Indexes created Sun Sep 21 14:09:52 GMT 2025