ddb: resize when new console attaches

[joshua stein]

This way we aren't wrapping ddb output lines halfway across the 
screen on a modern console.


diff --git sys/ddb/db_output.c sys/ddb/db_output.c
index 77fd0e34944..72b9a24e761 100644
--- sys/ddb/db_output.c
+++ sys/ddb/db_output.c
@@ -252,3 +252,10 @@ stacktrace_print(struct stacktrace *st, int (*pr)(const 
char *, ...))
        if (st->st_count == 0)
                (*pr)("<empty stack trace>\n");
 }
+
+void
+db_resize(int cols, int rows)
+{
+       db_max_width = cols;
+       db_max_line = rows;
+}
diff --git sys/ddb/db_output.h sys/ddb/db_output.h
index 86ca761acaa..855bcc39a12 100644
--- sys/ddb/db_output.h
+++ sys/ddb/db_output.h
@@ -41,6 +41,7 @@ int db_printf(const char *, ...)
 int db_vprintf(const char *, va_list)
     __attribute__((__format__(__kprintf__,1,0)));
 void db_end_line(int);
+void db_resize(int, int);
 
 /*
  * This is a replacement for the non-standard %z, %n and %r printf formats
diff --git sys/dev/wscons/wsdisplay.c sys/dev/wscons/wsdisplay.c
index 82daa85dda3..428019621c6 100644
--- sys/dev/wscons/wsdisplay.c
+++ sys/dev/wscons/wsdisplay.c
@@ -65,6 +65,10 @@
 #include <dev/wscons/wsmuxvar.h>
 #endif
 
+#ifdef DDB
+#include <ddb/db_output.h>
+#endif
+
 #include "wsmoused.h"
 
 struct wsscreen_internal {
@@ -836,6 +840,10 @@ wsdisplay_cnattach(const struct wsscreen_descr *type, void 
*cookie, int ccol,
                cn_tab = &wsdisplay_cons;
 
        wsdisplay_console_initted = 1;
+
+#ifdef DDB
+       db_resize(type->ncols, type->nrows);
+#endif
 }
 
 /*