Implement db_stack_dump - a function that will print a stack

trace with printf (to the console and into the msgbuf).

2 files changed, 25 insertions, 2 deletions

diff --git a/sys/ddb/db_output.c b/sys/ddb/db_output.c
index bc55e0f9723..01e43954719 100644
--- a/sys/ddb/db_output.c
+++ b/sys/ddb/db_output.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: db_output.c,v 1.18 2002/05/14 16:12:33 art Exp $	*/
+/*	$OpenBSD: db_output.c,v 1.19 2002/05/18 18:22:46 art Exp $	*/
 /*	$NetBSD: db_output.c,v 1.13 1996/04/01 17:27:14 christos Exp $	*/
 
 /* 
@@ -240,3 +240,23 @@ db_format(char *buf, size_t bufsize, long val, int format, int alt, int width)
 
 	return (buf);
 }
+
+void
+db_stack_dump(void)
+{
+	static int intrace;
+
+	if (intrace) {
+db_panic = 1;
+panic("foo");
+		printf("Faulted in traceback, aborting...\n");
+		return;
+	}
+
+	intrace = 1;
+	printf("Starting stack trace...\n");
+	db_stack_trace_print((db_expr_t)__builtin_frame_address(0), TRUE,
+	    256 /* low limit */, "", printf);
+	printf("End of stack trace.\n");
+	intrace = 0;
+}
diff --git a/sys/ddb/db_output.h b/sys/ddb/db_output.h
index e2dbc4c2bf4..dc9d9ca357c 100644
--- a/sys/ddb/db_output.h
+++ b/sys/ddb/db_output.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: db_output.h,v 1.11 2002/05/14 16:12:33 art Exp $ */
+/*	$OpenBSD: db_output.h,v 1.12 2002/05/18 18:22:46 art Exp $ */
 /*	$NetBSD: db_output.h,v 1.9 1996/04/04 05:13:50 cgd Exp $	*/
 
 /* 
@@ -57,3 +57,6 @@ void db_end_line(int);
 #define DB_FORMAT_N	3
 #define DB_FORMAT_BUF_SIZE	64	/* should be plenty for all formats */
 char *db_format(char *, size_t, long, int, int, int);
+
+/* XXX - this is the wrong place, but we have no better. */
+void db_stack_dump(void);