$NetBSD: patch-at,v 1.1 1998/12/28 22:22:01 bad Exp $

--- /dev/null	Sun Oct 25 03:18:33 1998
+++ machdep/engine-sparc-netbsd-1.3.c	Sun Oct 25 18:26:20 1998
@@ -0,0 +1,232 @@
+/* ==== machdep.c ============================================================
+ * Copyright (c) 1993, 1994 Chris Provenzano, proven@athena.mit.edu
+ *
+ * Description : Machine dependent functions for SunOS-4.1.3 on sparc
+ *
+ *	1.00 93/08/04 proven
+ *      -Started coding this file.
+ *
+ *	98/10/22 bad
+ *	-update for fat sigset_t in NetBSD 1.3H
+ */
+
+#ifndef lint
+static const char rcsid[] = "$Id: patch-at,v 1.1 1998/12/28 22:22:01 bad Exp $";
+#endif
+ 
+#include "config.h"
+#include <pthread.h>
+#include <stdlib.h>
+#include <errno.h>
+
+/* ==========================================================================
+ * machdep_save_state()
+ */
+int machdep_save_state(void)
+{
+	/* Save register windows onto stackframe */
+	__asm__ ("ta 3");
+
+    return(setjmp(pthread_run->machdep_data.machdep_state));
+}
+
+/* ==========================================================================
+ * machdep_restore_state()
+ */
+void machdep_restore_state(void)
+{
+    longjmp(pthread_run->machdep_data.machdep_state, 1);
+}
+/* ==========================================================================
+ * machdep_save_float_state()
+ */
+void machdep_save_float_state(struct pthread * pthread)
+{
+	return;
+}
+
+/* ==========================================================================
+ * machdep_restore_float_state()
+ */
+void machdep_restore_float_state(void)
+{
+	return;
+}
+
+/* ==========================================================================
+ * 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} };
+
+    if (setitimer(ITIMER_VIRTUAL, &zeroval, NULL)) {
+        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;
+
+	/* Save register windows onto stackframe */
+	__asm__ ("ta 3");
+
+	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[3] = (int)machdep_pthread_start;
+    machdep_pthread->machdep_state[4] = (int)machdep_pthread_start;
+
+   	/* Sparc stack starts high and builds down. */
+    machdep_pthread->machdep_state[2] =
+	  (int)machdep_pthread->machdep_stack + stack_size - 1024; 
+	machdep_pthread->machdep_state[2] &= ~7;
+
+}
+
+#if defined(HAVE_SYSCALL_GETDENTS)
+/* ==========================================================================
+ * machdep_sys_getdirentries()
+ *
+ * Always use getdents in place of getdirentries if possible --proven
+ */
+int machdep_sys_getdirentries(int fd, char * buf, int len, int * seek)
+{
+	return(machdep_sys_getdents(fd, buf, len));
+}
+#endif
+
+/* ==========================================================================
+ * 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 pid, int * statusp, int options)
+{
+	if (pid == -1)
+		pid = 0;
+	else if (pid == 0)
+		pid = - getpgrp ();
+	return machdep_sys_wait4 (pid, statusp, options, NULL);
+}
+
+#if !defined(HAVE_SYSCALL_SIGPROCMASK) 
+#if 0
+/* ==========================================================================
+ * machdep_sys_sigprocmask()
+ * This isn't a real implementation; we can make the assumption that the
+ * pthreads library is not using oset, and that it is always blocking or
+ * unblocking all signals at once.
+ */
+int machdep_sys_sigprocmask(int how, const sigset_t *set, sigset_t *oset)
+{
+    switch(how) {
+      case SIG_BLOCK:
+	sigblock(*set);
+	break;
+      case SIG_UNBLOCK:
+	sigsetmask(~*set);
+	break;
+      case SIG_SETMASK:
+	sigsetmask(*set);
+	break;
+      default:
+	return -EINVAL;
+    }
+    return(OK);
+}
+
+/* ==========================================================================
+ * sigaction()
+ *
+ * Temporary until I do machdep_sys_sigaction()
+ */
+int sigaction(int sig, const struct sigaction *act, struct sigaction *oldact)
+{
+	return(sigvec(sig, (struct sigvec *)act, (struct sigvec *)oldact));
+}
+#endif
+#endif
+
+#if !defined(HAVE_SYSCALL_GETDTABLESIZE) 
+/* ==========================================================================
+ * machdep_sys_getdtablesize()
+ */
+machdep_sys_getdtablesize()
+{
+        return(sysconf(_SC_OPEN_MAX));
+} 
+#endif