atomic_cas.S revision 1.2
1 1.2 matt /* $NetBSD: atomic_cas.S,v 1.2 2009/12/14 00:39:00 matt Exp $ */ 2 1.2 matt 3 1.2 matt /*- 4 1.2 matt * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 1.2 matt * All rights reserved. 6 1.2 matt * 7 1.2 matt * Redistribution and use in source and binary forms, with or without 8 1.2 matt * modification, are permitted provided that the following conditions 9 1.2 matt * are met: 10 1.2 matt * 1. Redistributions of source code must retain the above copyright 11 1.2 matt * notice, this list of conditions and the following disclaimer. 12 1.2 matt * 2. Redistributions in binary form must reproduce the above copyright 13 1.2 matt * notice, this list of conditions and the following disclaimer in the 14 1.2 matt * documentation and/or other materials provided with the distribution. 15 1.2 matt * 16 1.2 matt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.2 matt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.2 matt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.2 matt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.2 matt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.2 matt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.2 matt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.2 matt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.2 matt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.2 matt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2 matt * POSSIBILITY OF SUCH DAMAGE. 27 1.2 matt */ 28 1.2 matt 29 1.2 matt #include <sys/cdefs.h> 30 1.2 matt #include <machine/asm.h> 31 1.2 matt #include "atomic_op_asm.h" 32 1.2 matt 33 1.2 matt RCSID("$NetBSD: atomic_cas.S,v 1.2 2009/12/14 00:39:00 matt Exp $") 34 1.2 matt 35 1.2 matt .text 36 1.2 matt .set noat 37 1.2 matt .set noreorder 38 1.2 matt .set nomacro 39 1.2 matt 40 1.2 matt LEAF(_atomic_cas_32) 41 1.2 matt 1: INT_LL v0, 0(a0) 42 1.2 matt nop 43 1.2 matt bne v0, a1, 2f 44 1.2 matt nop 45 1.2 matt move t0, a2 46 1.2 matt INT_SC t0, 0(a0) 47 1.2 matt beq t0, zero, 1b 48 1.2 matt nop 49 1.2 matt move v0, a1 50 1.2 matt 2: 51 1.2 matt j ra 52 1.2 matt nop 53 1.2 matt END(_atomic_cas_32) 54 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_32, _atomic_cas_32) 55 1.2 matt 56 1.2 matt #if !defined(__mips_o32) 57 1.2 matt LEAF(_atomic_cas_64) 58 1.2 matt 1: REG_LL v0, 0(a0) 59 1.2 matt nop 60 1.2 matt bne v0, a1, 2f 61 1.2 matt nop 62 1.2 matt move t0, a2 63 1.2 matt REG_SC t0, 0(a0) 64 1.2 matt beq t0, zero, 1b 65 1.2 matt nop 66 1.2 matt move v0, a1 67 1.2 matt 2: 68 1.2 matt j ra 69 1.2 matt nop 70 1.2 matt END(_atomic_cas_64) 71 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_64, _atomic_cas_64) 72 1.2 matt #endif 73 1.2 matt 74 1.2 matt #ifdef _LP64 75 1.2 matt STRONG_ALIAS(_atomic_cas_ptr, _atomic_cas_64) 76 1.2 matt STRONG_ALIAS(_atomic_cas_ptr_ni, _atomic_cas_64) 77 1.2 matt STRONG_ALIAS(_atomic_cas_ulong, _atomic_cas_64) 78 1.2 matt STRONG_ALIAS(_atomic_cas_ulong_ni, _atomic_cas_64) 79 1.2 matt #else 80 1.2 matt STRONG_ALIAS(_atomic_cas_ptr, _atomic_cas_32) 81 1.2 matt STRONG_ALIAS(_atomic_cas_ptr_ni, _atomic_cas_32) 82 1.2 matt STRONG_ALIAS(_atomic_cas_ulong, _atomic_cas_32) 83 1.2 matt STRONG_ALIAS(_atomic_cas_ulong_ni, _atomic_cas_32) 84 1.2 matt #endif 85 1.2 matt STRONG_ALIAS(_atomic_cas_uint, _atomic_cas_32) 86 1.2 matt STRONG_ALIAS(_atomic_cas_uint_ni, _atomic_cas_32) 87 1.2 matt 88 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_ptr, _atomic_cas_ptr) 89 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_ptr_ni, _atomic_cas_ptr_ni) 90 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_uint, _atomic_cas_uint) 91 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_uint_ni, _atomic_cas_uint_ni) 92 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_ulong, _atomic_cas_ulong) 93 1.2 matt ATOMIC_OP_ALIAS(atomic_cas_ulong_ni, _atomic_cas_ulong_ni) 94
Indexes created Wed Sep 24 05:09:52 GMT 2025