$NetBSD: patch-aw,v 1.1 1998/12/28 22:22:02 bad Exp $
--- /dev/null Sun Dec 27 17:45:54 1998
+++ machdep/engine-i386-netbsd-1.3.c Mon Mar 2 19:44:34 1998
@@ -0,0 +1,225 @@
+/* ==== machdep.c ============================================================
+ * Copyright (c) 1993, 1994 Chris Provenzano, proven@athena.mit.edu
+ *
+ * Copyright (c) 1993 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[] = "$Id: patch-aw,v 1.1 1998/12/28 22:22:02 bad 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(_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)
+{
+ _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;
+
+ _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));
+}
+
+/* ==========================================================================
+ * machdep_sys_getdirentries()
+ */
+machdep_sys_getdirentries(int fd, char * buf, int len, int * seek)
+{
+ return(machdep_sys_getdents(fd, buf, len));
+}