Date: Tue, 15 Jan 2013 21:15:11 -0800 From: Adrian Chadd <adrian@freebsd.org> To: freebsd-hackers@freebsd.org Cc: freebsd-current <freebsd-current@freebsd.org> Subject: [RFC] support -b <baudrate> when starting gdb Message-ID: <CAJ-Vmo=egCndUfHoQVS3Sy8rd0QOEm96mJ1Vv3K%2BrRuJcUpp9Q@mail.gmail.com>
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Hi,
There doesn't seem to be a blessed way to set the baudrate from inside
gdb/kgdb. It seems to be set from '-b' on the command line.
However kgdb doesn't have this support.
This patch adds -b support so kgdb so I can override the default speed
(9600 it seems) to speak kgdb over serial to a 115200 console MIPS
device.
The MIPS stuff has other issues; I'll talk about those later.
Thanks,
Adrian
Index: gnu/usr.bin/gdb/kgdb/main.c
===================================================================
--- gnu/usr.bin/gdb/kgdb/main.c (revision 245281)
+++ gnu/usr.bin/gdb/kgdb/main.c (working copy)
@@ -333,11 +333,24 @@
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",
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