Date: Tue, 15 Jan 2013 22:30:37 -0800 From: Adrian Chadd <adrian@freebsd.org> To: freebsd-hackers@freebsd.org Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: [RFC] support -b <baudrate> when starting gdb Message-ID: <CAJ-VmokDCsNex_eAkaWUPaLRDD7shMsXUs0iHgYpgBSJbqhYcg@mail.gmail.com> In-Reply-To: <CAJ-Vmo=egCndUfHoQVS3Sy8rd0QOEm96mJ1Vv3K%2BrRuJcUpp9Q@mail.gmail.com> References: <CAJ-Vmo=egCndUfHoQVS3Sy8rd0QOEm96mJ1Vv3K%2BrRuJcUpp9Q@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Also, I found 'set remotebaud' and 'set debug remote 1' to do this.
I'd like to add the code just to support the same -b flag as gdb (so
-r can also be used with a non-standard serial port.)
Thanks,
Adrian
On 15 January 2013 21:15, Adrian Chadd <adrian@freebsd.org> wrote:
> 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",
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJ-VmokDCsNex_eAkaWUPaLRDD7shMsXUs0iHgYpgBSJbqhYcg>