1/* $OpenBSD: tfork_thread.S,v 1.4 2021/02/03 13:00:39 kurt Exp $ */ 2 3/* 4 * Copyright (c) 2005, Miodrag Vallat 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include "SYS.h" 29 30/* 31 * int __tfork_thread(param, size_t psize, void (*func)(void *), void *arg); 32 */ 33ENTRY(__tfork_thread, 0) 34 SYSCALL(__tfork) 35 comb,<> r0, ret0, 1f 36 nop 37 38 /* 39 * In child process: invoke function, then exit. 40 */ 41 copy arg3, arg0 /* arg */ 42 copy arg2, t1 43 bl $$dyncall, r31 44 copy r31, rp 45 46 copy r0, arg0 47 SYSCALL(__threxit) 48 491: 50 bv r0(rp) 51 nop 52 53EXIT(__tfork_thread) 54