Machine-dependent part of the KGDB remote "stub"

1997-02-12 01:03:20 +00:00 · 1997-02-12 01:03:20 +00:00 · cfb896375f
commit cfb896375f
parent 2d1b2f72cd
1 changed files with 122 additions and 0 deletions
--- a/sys/arch/sun3/sun3/kgdb_machdep.c
+++ b/sys/arch/sun3/sun3/kgdb_machdep.c
@ -0,0 +1,122 @@
+/*	$NetBSD: kgdb_machdep.c,v 1.1 1997/02/12 01:03:20 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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, Lawrence Berkeley Laboratories.
+ *
+ * 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.
+ *
+ *	@(#)kgdb_stub.c	8.4 (Berkeley) 1/12/94
+ */
+
+/*
+ * Machine-dependent part of the KGDB remote "stub"
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kgdb.h>
+
+#include <machine/control.h>
+#include <machine/pte.h>
+
+
+extern void Debugger __P((void));
+
+/*
+ * Determine if the memory at va..(va+len) is valid.
+ */
+int
+kgdb_acc(va, ulen)
+	vm_offset_t va;
+	size_t ulen;
+{
+	int len, pte, pgoff;
+
+	len = (int)ulen;
+	pgoff = va & PGOFSET;
+	va  -= pgoff;
+	len += pgoff;
+
+	while (len > 0) {
+		pte = get_pte(va);
+		if ((pte & PG_VALID) == 0)
+			return (0);
+		va  += NBPG;
+		len -= NBPG;
+	}
+
+	return (1);
+}
+
+/*
+ * Trap into kgdb to wait for debugger to connect,
+ * noting on the console why nothing else is going on.
+ */
+void
+kgdb_connect(verbose)
+	int verbose;
+{
+
+	if (kgdb_dev < 0)
+		return;
+
+	if (verbose)
+		printf("kgdb waiting...");
+
+	Debugger();
+
+	if (verbose)
+		printf("connected.\n");
+}
+
+/*
+ * Decide what to do on panic.
+ *
+ * The sun3 implementation of Debugger() arranges to call
+ * either kgdb_trap() or kdb_trap() as appropriate, so
+ * we can just call Debugger() here.
+ */
+void
+kgdb_panic()
+{
+	if (kgdb_dev >= 0 && kgdb_debug_panic) {
+		printf("entering kgdb\n");
+		Debugger();
+	}
+}