Add command-line support to kgdb to allow the baudrate to be set.

This allows a remote session to be specified with '-r' as well as a
non-default baudrate setting using '-b'.

TODO: add to the kgdb manpage.

MFC after:	2 weeks

1 files changed, 14 insertions, 1 deletions

diff --git a/gnu/usr.bin/gdb/kgdb/main.c b/gnu/usr.bin/gdb/kgdb/main.c
index 9293f36..45a3dc0 100644
--- a/gnu/usr.bin/gdb/kgdb/main.c
+++ b/gnu/usr.bin/gdb/kgdb/main.c
@@ -333,11 +333,24 @@ main(int argc, char *argv[])
 	args.argv = malloc(sizeof(char *));
 	args.argv[0] = argv[0];
 
-	while ((ch = getopt(argc, argv, "ac:d:fn:qr:vw")) != -1) {
+	while ((ch = getopt(argc, argv, "ab:c:d:fn:qr:vw")) != -1) {
 		switch (ch) {
 		case 'a':
 			annotation_level++;
 			break;
+		case 'b':
+			{
+				int i;
+				char *p;
+
+				i = strtol (optarg, &p, 0);
+				if (i == 0 && p == optarg)
+				warnx("warning: could not set baud rate to `%s'.\n",
+				    optarg);
+				else
+					baud_rate = i;
+			}
+			break;
 		case 'c':	/* use given core file. */
 			if (vmcore != NULL) {
 				warnx("option %c: can only be specified once",