diff options
Diffstat (limited to 'mit-pthreads/machdep/engine-i386-freebsd-2.0.c')
| -rw-r--r-- | mit-pthreads/machdep/engine-i386-freebsd-2.0.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/engine-i386-freebsd-2.0.c b/mit-pthreads/machdep/engine-i386-freebsd-2.0.c new file mode 100644 index 00000000000..3b6b8f31ae0 --- /dev/null +++ b/mit-pthreads/machdep/engine-i386-freebsd-2.0.c @@ -0,0 +1,208 @@ +/* ==== 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->_jb[0] = (int)machdep_pthread_start; + + /* Stack starts high and builds down. */ + machdep_pthread->machdep_state->_jb[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)); +} + |