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/*-
* Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
* Copyright (c) 2014 the FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by Andrew Turner
* under sponsorship from the FreeBSD Foundation
*
* 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 ``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 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.
*
* $FreeBSD$
*/
/*
* Machine-dependent thread prototypes/definitions.
*/
#ifndef _PTHREAD_MD_H_
#define _PTHREAD_MD_H_
#include <sys/types.h>
#include <machine/sysarch.h>
#include <stddef.h>
#define CPU_SPINWAIT
#define DTV_OFFSET offsetof(struct tcb, tcb_dtv)
/*
* Variant I tcb. The structure layout is fixed, don't blindly
* change it.
*/
struct tcb {
void *tcb_dtv;
struct pthread *tcb_thread;
};
/* Called from the thread to set its private data. */
static __inline void
_tcb_set(struct tcb *tcb)
{
__asm __volatile("msr tpidr_el0, %x0" :: "r" (tcb));
}
/*
* Get the current tcb.
*/
static __inline struct tcb *
_tcb_get(void)
{
struct tcb *tcb;
__asm __volatile("mrs %x0, tpidr_el0" : "=r" (tcb));
return (tcb);
}
extern struct pthread *_thr_initial;
static __inline struct pthread *
_get_curthread(void)
{
return (_tcb_get()->tcb_thread);
}
#endif /* _PTHREAD_MD_H_ */
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