78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 2015 Nuxi, https://nuxi.nl/
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <contrib/cloudabi/cloudabi64_types.h>
|
|
|
|
#include <compat/cloudabi64/cloudabi64_proto.h>
|
|
#include <compat/cloudabi64/cloudabi64_util.h>
|
|
|
|
struct thread_create_args {
|
|
cloudabi64_threadattr_t attr;
|
|
uint64_t tcb;
|
|
lwpid_t tid;
|
|
};
|
|
|
|
static int
|
|
initialize_thread(struct thread *td, void *thunk)
|
|
{
|
|
struct thread_create_args *args = thunk;
|
|
|
|
/* Save the thread ID, so it can be returned. */
|
|
args->tid = td->td_tid;
|
|
|
|
/* Set up initial register contents. */
|
|
return (cloudabi64_thread_setregs(td, &args->attr, args->tcb));
|
|
}
|
|
|
|
int
|
|
cloudabi64_sys_thread_create(struct thread *td,
|
|
struct cloudabi64_sys_thread_create_args *uap)
|
|
{
|
|
struct thread_create_args args;
|
|
int error;
|
|
|
|
error = copyin(uap->attr, &args.attr, sizeof(args.attr));
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/* Remove some space on the top of the stack for the TCB. */
|
|
args.tcb = rounddown(args.attr.stack + args.attr.stack_len -
|
|
sizeof(cloudabi64_tcb_t), _Alignof(cloudabi64_tcb_t));
|
|
args.attr.stack_len = args.tcb - args.attr.stack;
|
|
|
|
error = thread_create(td, NULL, initialize_thread, &args);
|
|
if (error != 0)
|
|
return (error);
|
|
td->td_retval[0] = args.tid;
|
|
return (0);
|
|
}
|