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/* ==== machdep.c ============================================================
* Copyright (c) 1995 by Chris Provenzano, proven@mit.edu
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Chris Provenzano.
* 4. The name of Chris Provenzano may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
*
* Description : Machine dependent functions for NetBSD on i386
*
* 1.00 93/08/04 proven
* -Started coding this file.
*/
#ifndef lint
static const char rcsid[] = "engine-i386-freebsd-2.0.c,v 1.1 1995/03/01 01:21:20 proven Exp";
#endif
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdio.h>
/* ==========================================================================
* machdep_save_state()
*/
int machdep_save_state(void)
{
return(machdep_sys_setjmp(pthread_run->machdep_data.machdep_state));
}
/* ==========================================================================
* machdep_save_state()
*/
int machdep_save_float_state(struct pthread * pthread)
{
char * fdata = (char *)pthread->machdep_data.machdep_float_state;
__asm__ ("fsave %0"::"m" (*fdata));
}
/* ==========================================================================
* machdep_restore_state()
*/
void machdep_restore_state(void)
{
machdep_sys_longjmp(pthread_run->machdep_data.machdep_state, 1);
}
/* ==========================================================================
* machdep_restore_float_state()
*/
int machdep_restore_float_state(void)
{
char * fdata = (char *)pthread_run->machdep_data.machdep_float_state;
__asm__ ("frstor %0"::"m" (*fdata));
}
/* ==========================================================================
* machdep_set_thread_timer()
*/
void machdep_set_thread_timer(struct machdep_pthread *machdep_pthread)
{
if (setitimer(ITIMER_VIRTUAL, &(machdep_pthread->machdep_timer), NULL)) {
PANIC();
}
}
/* ==========================================================================
* machdep_unset_thread_timer()
*/
void machdep_unset_thread_timer(struct machdep_pthread *machdep_pthread)
{
struct itimerval zeroval = { { 0, 0 }, { 0, 0 } };
int ret;
if (machdep_pthread) {
ret = setitimer(ITIMER_VIRTUAL, &zeroval,
&(machdep_pthread->machdep_timer));
} else {
ret = setitimer(ITIMER_VIRTUAL, &zeroval, NULL);
}
if (ret) {
PANIC();
}
}
/* ==========================================================================
* machdep_pthread_cleanup()
*/
void *machdep_pthread_cleanup(struct machdep_pthread *machdep_pthread)
{
return(machdep_pthread->machdep_stack);
}
/* ==========================================================================
* machdep_pthread_start()
*/
void machdep_pthread_start(void)
{
context_switch_done();
pthread_sched_resume();
/* Run current threads start routine with argument */
pthread_exit(pthread_run->machdep_data.start_routine
(pthread_run->machdep_data.start_argument));
/* should never reach here */
PANIC();
}
/* ==========================================================================
* __machdep_stack_free()
*/
void __machdep_stack_free(void * stack)
{
free(stack);
}
/* ==========================================================================
* __machdep_stack_alloc()
*/
void * __machdep_stack_alloc(size_t size)
{
void * stack;
return(malloc(size));
}
/* ==========================================================================
* __machdep_pthread_create()
*/
void __machdep_pthread_create(struct machdep_pthread *machdep_pthread,
void *(* start_routine)(), void *start_argument,
long stack_size, long nsec, long flags)
{
machdep_pthread->start_routine = start_routine;
machdep_pthread->start_argument = start_argument;
machdep_pthread->machdep_timer.it_value.tv_sec = 0;
machdep_pthread->machdep_timer.it_interval.tv_sec = 0;
machdep_pthread->machdep_timer.it_interval.tv_usec = 0;
machdep_pthread->machdep_timer.it_value.tv_usec = nsec / 1000;
machdep_sys_setjmp(machdep_pthread->machdep_state);
/*
* Set up new stact frame so that it looks like it
* returned from a longjmp() to the beginning of
* machdep_pthread_start().
*/
machdep_pthread->machdep_state[0] = (int)machdep_pthread_start;
/* Stack starts high and builds down. */
machdep_pthread->machdep_state[2] =
(int)machdep_pthread->machdep_stack + stack_size;
}
/* ==========================================================================
* machdep_sys_creat()
*/
machdep_sys_creat(char * path, int mode)
{
return(machdep_sys_open(path, O_WRONLY | O_CREAT | O_TRUNC, mode));
}
/* ==========================================================================
* machdep_sys_wait3()
*/
machdep_sys_wait3(int * b, int c, int * d)
{
return(machdep_sys_wait4(0, b, c, d));
}
/* ==========================================================================
* machdep_sys_waitpid()
*/
machdep_sys_waitpid(int a, int * b, int c)
{
return(machdep_sys_wait4(a, b, c, NULL));
}
/* ==========================================================================
* machdep_sys_getdtablesize()
*/
machdep_sys_getdtablesize()
{
return(sysconf(_SC_OPEN_MAX));
}
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