1 /*-
2 * Copyright (c) 2015 Nuxi, https://nuxi.nl/
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28
29 #include <sys/param.h>
30 #include <sys/proc.h>
31 #include <sys/systm.h>
32
33 #include <compat/cloudabi64/cloudabi64_syscalldefs.h>
34 #include <compat/cloudabi64/cloudabi64_proto.h>
35 #include <compat/cloudabi64/cloudabi64_util.h>
36
37 struct thread_create_args {
38 cloudabi64_threadattr_t attr;
39 lwpid_t tid;
40 };
41
42 static int
initialize_thread(struct thread * td,void * thunk)43 initialize_thread(struct thread *td, void *thunk)
44 {
45 struct thread_create_args *args = thunk;
46
47 /* Save the thread ID, so it can be returned. */
48 args->tid = td->td_tid;
49
50 /* Set up initial register contents. */
51 cloudabi64_thread_setregs(td, &args->attr);
52 return (0);
53 }
54
55 int
cloudabi64_sys_thread_create(struct thread * td,struct cloudabi64_sys_thread_create_args * uap)56 cloudabi64_sys_thread_create(struct thread *td,
57 struct cloudabi64_sys_thread_create_args *uap)
58 {
59 struct thread_create_args args;
60 int error;
61
62 error = copyin(uap->attr, &args.attr, sizeof(args.attr));
63 if (error != 0)
64 return (error);
65 error = thread_create(td, NULL, initialize_thread, &args);
66 if (error != 0)
67 return (error);
68 td->td_retval[0] = args.tid;
69 return (0);
70 }
71