1eb7c7cae3
The first system call is used to set the user TLS address. Right now this system call is invoked by the C library for both the initial thread and additional threads unconditionally, but in the future we'll only call this if the architecture does not support this. On recent x86-64 CPUs we could use the WRFSBASE instruction. This system call was erroneously placed in sys/compat/cloudabi64, even though it does not depend on any pointer size dependent datastructure. Move it to the right place. Obtained from: https://github.com/NuxiNL/freebsd
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*-
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* Copyright (c) 2015 Nuxi, https://nuxi.nl/
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/sched.h>
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#include <compat/cloudabi/cloudabi_proto.h>
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int
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cloudabi_sys_thread_exit(struct thread *td,
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struct cloudabi_sys_thread_exit_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_thread_tcb_set(struct thread *td,
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struct cloudabi_sys_thread_tcb_set_args *uap)
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{
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return (cpu_set_user_tls(td, uap->tcb));
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}
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int
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cloudabi_sys_thread_yield(struct thread *td,
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struct cloudabi_sys_thread_yield_args *uap)
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{
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sched_relinquish(td);
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return (0);
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}
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