1/* $NetBSD: pthread_md.S,v 1.2 2022/05/19 07:10:15 skrll Exp $ */ 2 3/* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Wayne Knowles 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 <sys/ras.h> 33#include <machine/asm.h> 34 35LEAF_ENTRY(pthread__ras_simple_lock_init) 36 ldi 1,%ret0 /* 1 == unlocked */ 37 stw %ret0,0(%arg0) 38 stw %ret0,4(%arg0) 39 stw %ret0,8(%arg0) 40 stw %ret0,12(%arg0) 41 bv,n %r0(%rp) 42EXIT(pthread__ras_simple_lock_init) 43 44 .global pthread__lock_ras_start 45 .global pthread__lock_ras_end 46 47LEAF_ENTRY(pthread__ras_simple_lock_try) 48 ldo 15(%arg0),%arg0 49 depi 0,31,4,%arg0 50 51RAS_START_ASM_HIDDEN(pthread__lock) 52 ldw 0(%arg0),%ret0 53 stw %r0,0(%arg0) /* 0 == locked */ 54RAS_END_ASM_HIDDEN(pthread__lock) 55 56 comiclr,= 0,%ret0,%ret0 /* if locked return 0 */ 57 ldi 1,%ret0 /* else return 1 */ 58 bv,n %r0(%rp) 59EXIT(pthread__ras_simple_lock_try) 60 61 62LEAF_ENTRY(pthread__ras_simple_unlock) 63 ldo 15(%arg0),%arg0 64 depi 0,31,4,%arg0 65 ldi 1,%ret0 /* 1 == unlocked */ 66 bv %r0(%rp) 67 stw %ret0,0(%arg0) 68EXIT(pthread__ras_simple_unlock) 69