Re: lan based kgdb

From: Andrew Morton (akpm@digeo.com)
Date: Fri Nov 15 2002 - 17:51:11 EST


Stelian Pop wrote:
>
> On Fri, Nov 15, 2002 at 09:26:00PM +0000, Linus Torvalds wrote:
>
> > I dunno. I might even be willing to apply kgdb patches to my tree if it
> > just could use the regular network card I already have connected on all
> > my machines. None of my laptops have a serial line, for example, but
> > they all have networking.
> >
> > Soon even _desktops_ probably won't have serial lines any more, only USB.
>
> Using USB instead of the serial line or the network card would be
> the best IMHO, because:
>

Here is the kgdb stub's "send a byte" function:

static void
write_char(int chr)
{
       while (!(inb(gdb_port + UART_LSR) & UART_LSR_THRE)) ;

       outb(chr, gdb_port + UART_TX);
}

Need I say more?
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