1 /* $NetBSD: pthread_makelwp_netbsd.c,v 1.3 2022/02/12 14:59:32 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2001, 2002, 2003, 2006, 2007, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Nathan J. Williams and Andrew Doran.
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/cdefs.h>
33 __RCSID("$NetBSD: pthread_makelwp_netbsd.c,v 1.3 2022/02/12 14:59:32 riastradh Exp $");
34
35 /* Need to use libc-private names for atomic operations. */
36 #include "../../common/lib/libc/atomic/atomic_op_namespace.h"
37
38 #include <sys/param.h>
39
40 #include <lwp.h>
41 #include <pthread.h>
42 #include <string.h>
43
44 #include "pthread_int.h"
45 #include "pthread_makelwp.h"
46
47 int
pthread__makelwp(void (* start_routine)(void *),void * arg,void * priv,void * stack_base,size_t stack_size,unsigned long flag,lwpid_t * newlid)48 pthread__makelwp(void (*start_routine)(void *), void *arg, void *priv,
49 void *stack_base, size_t stack_size,
50 unsigned long flag, lwpid_t *newlid)
51 {
52 ucontext_t uc;
53
54 /*
55 * XXX: most of the following chunk is these days
56 * performed also by _lwp_makecontext(), but there may
57 * be MD differences, so lug everything along for now.
58 */
59 memset(&uc, 0, sizeof(uc));
60 _INITCONTEXT_U(&uc);
61 uc.uc_stack.ss_sp = stack_base;
62 uc.uc_stack.ss_size = stack_size;
63 uc.uc_stack.ss_flags = 0;
64 uc.uc_link = NULL;
65
66 _lwp_makecontext(&uc, start_routine, arg, priv, stack_base, stack_size);
67 return _lwp_create(&uc, flag, newlid);
68 }
69