1 files changed, 105 insertions, 0 deletions
diff --git a/sys/i386/i386/sys_machdep.c b/sys/i386/i386/sys_machdep.c
new file mode 100644
index 0000000..10b9ac2
--- /dev/null
+++ b/sys/i386/i386/sys_machdep.c
@@ -0,0 +1,105 @@
+
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	@(#)sys_machdep.c	5.5 (Berkeley) 1/19/91
+ */
+
+#include "param.h"
+#include "systm.h"
+#include "ioctl.h"
+#include "file.h"
+#include "time.h"
+#include "proc.h"
+#include "uio.h"
+#include "kernel.h"
+#include "mtio.h"
+#include "buf.h"
+#include "trace.h"
+
+#ifdef TRACE
+int	nvualarm;
+
+vtrace(p, uap, retval)
+	struct proc *p;
+	register struct args {
+		int	request;
+		int	value;
+	} *uap;
+	int *retval;
+{
+	int vdoualarm();
+
+	switch (uap->request) {
+
+	case VTR_DISABLE:		/* disable a trace point */
+	case VTR_ENABLE:		/* enable a trace point */
+		if (uap->value < 0 || uap->value >= TR_NFLAGS)
+			return (EINVAL);
+		*retval = traceflags[uap->value];
+		traceflags[uap->value] = uap->request;
+		break;
+
+	case VTR_VALUE:		/* return a trace point setting */
+		if (uap->value < 0 || uap->value >= TR_NFLAGS)
+			return (EINVAL);
+		*retval = traceflags[uap->value];
+		break;
+
+	case VTR_UALARM:	/* set a real-time ualarm, less than 1 min */
+		if (uap->value <= 0 || uap->value > 60 * hz || nvualarm > 5)
+			return (EINVAL);
+		nvualarm++;
+		timeout(vdoualarm, (caddr_t)p->p_pid, uap->value);
+		break;
+
+	case VTR_STAMP:
+		trace(TR_STAMP, uap->value, p->p_pid);
+		break;
+	}
+	return (0);
+}
+
+vdoualarm(arg)
+	int arg;
+{
+	register struct proc *p;
+
+	p = pfind(arg);
+	if (p)
+		psignal(p, 16);
+	nvualarm--;
+}
+#endif