freebsd-dev/sys/compat/cloudabi/cloudabi_thread.c
Ed Schouten 1f3bbfd875 Replace the CloudABI system call table by a machine generated version.
The type definitions and constants that were used by COMPAT_CLOUDABI64
are a literal copy of some headers stored inside of CloudABI's C
library, cloudlibc. What is annoying is that we can't make use of
cloudlibc's system call list, as the format is completely different and
doesn't provide enough information. It had to be synced in manually.

We recently decided to solve this (and some other problems) by moving
the ABI definitions into a separate file:

	https://github.com/NuxiNL/cloudabi/blob/master/cloudabi.txt

This file is processed by a pile of Python scripts to generate the
header files like before, documentation (markdown), but in our case more
importantly: a FreeBSD system call table.

This change discards the old files in sys/contrib/cloudabi and replaces
them by the latest copies, which requires some minor changes here and
there. Because cloudabi.txt also enforces consistent names of the system
call arguments, we have to patch up a small number of system call
implementations to use the new argument names.

The new header files can also be included directly in FreeBSD kernel
space without needing any includes/defines, so we can now remove
cloudabi_syscalldefs.h and cloudabi64_syscalldefs.h. Patch up the
sources to include the definitions directly from sys/contrib/cloudabi
instead.
2016-03-24 21:47:15 +00:00

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2.3 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/sched.h>
#include <sys/syscallsubr.h>
#include <contrib/cloudabi/cloudabi_types_common.h>
#include <compat/cloudabi/cloudabi_proto.h>
int
cloudabi_sys_thread_exit(struct thread *td,
struct cloudabi_sys_thread_exit_args *uap)
{
struct cloudabi_sys_lock_unlock_args cloudabi_sys_lock_unlock_args = {
.lock = uap->lock,
.scope = uap->scope,
};
/* Wake up joining thread. */
cloudabi_sys_lock_unlock(td, &cloudabi_sys_lock_unlock_args);
/*
* Attempt to terminate the thread. Terminate the process if
* it's the last thread.
*/
kern_thr_exit(td);
exit1(td, 0, 0);
/* NOTREACHED */
}
int
cloudabi_sys_thread_tcb_set(struct thread *td,
struct cloudabi_sys_thread_tcb_set_args *uap)
{
return (cpu_set_user_tls(td, uap->tcb));
}
int
cloudabi_sys_thread_yield(struct thread *td,
struct cloudabi_sys_thread_yield_args *uap)
{
sched_relinquish(td);
return (0);
}