83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2003 Marcel Moolenaar
|
|
* All rights reserved.
|
|
*
|
|
* 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 for the thread kernel.
|
|
*/
|
|
#ifndef _PTHREAD_MD_H_
|
|
#define _PTHREAD_MD_H_
|
|
|
|
#include <ucontext.h>
|
|
|
|
#define THR_GETCONTEXT(ucp) \
|
|
(void)_amd64_save_context(&(ucp)->uc_mcontext)
|
|
#define THR_SETCONTEXT(ucp) \
|
|
(void)_amd64_restore_context(&(ucp)->uc_mcontext, NULL, NULL)
|
|
|
|
#define THR_ALIGNBYTES 15
|
|
#define THR_ALIGN(td) (((uintptr_t)(td) + THR_ALIGNBYTES) & ~THR_ALIGNBYTES)
|
|
|
|
/*
|
|
* KSE Specific Data.
|
|
*/
|
|
struct ksd {
|
|
void *base;
|
|
long size;
|
|
};
|
|
|
|
void _amd64_enter_uts(struct kse_mailbox *km, kse_func_t uts, void *stack,
|
|
size_t stacksz);
|
|
int _amd64_restore_context(mcontext_t *mc, intptr_t val, intptr_t *loc);
|
|
int _amd64_save_context(mcontext_t *mc);
|
|
|
|
static __inline int
|
|
_thread_enter_uts(struct kse_thr_mailbox *tm, struct kse_mailbox *km)
|
|
{
|
|
if (tm == NULL)
|
|
return (-1);
|
|
if (!_amd64_save_context(&tm->tm_context.uc_mcontext)) {
|
|
_amd64_enter_uts(km, km->km_func, km->km_stack.ss_sp,
|
|
km->km_stack.ss_size);
|
|
/* We should not reach here. */
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
_thread_switch(struct kse_thr_mailbox *tm, struct kse_thr_mailbox **thrp)
|
|
{
|
|
if (tm == NULL)
|
|
return (-1);
|
|
_amd64_restore_context(&tm->tm_context.uc_mcontext, (intptr_t)tm,
|
|
(intptr_t*)thrp);
|
|
/* We should not reach here. */
|
|
return (-1);
|
|
}
|
|
|
|
#endif
|