From owner-cvs-all  Fri Jun 22  2:19: 1 2001
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Date: Fri, 22 Jun 2001 19:16:55 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Greg Lehey <grog@FreeBSD.org>
Cc: Warner Losh <imp@harmony.village.org>,
	Brian Somers <brian@Awfulhak.org>, Ian Dowse <iedowse@FreeBSD.org>,
	cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/isa sio.c
In-Reply-To: <20010622114632.P57186@wantadilla.lemis.com>
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On Fri, 22 Jun 2001, Greg Lehey wrote:

> On Thursday, 21 June 2001 at 19:52:04 -0600, Warner Losh wrote:
> > In message <20010622101142.C86129@wantadilla.lemis.com> Greg Lehey writes:
> >> Remote serial gdb at 115200 bps doesn't work.
> >
> > It does for me.
> 
> On -CURRENT?  That's news.  It's still down as a "known issue" on the
> SMPng page.

This might be due to bogus disabling of interrupts in i386_gdbstub.c
(rev.1.14, 1.15 and 1.16) and db_interface.c (rev.1.51).  Interrupts
must disabled while the debugger is active, but these commits only
disable them in some cases.  i386_gdbstub.c only disables them while
sending and receiving packets, but disabling them while sending packets
is unnecessary and disabling them while receiving packets may be too
late.  db_interface.c only disables then when the debugger is entered
via Debugger(), which is an unusual case (the debugger is usually
entered via a trace trap).  Rev.1.16 of i386_gdbstub.c and rev.1.51
of db_interface.c also brought back the clock update problem that was
"fixed" in rev.1.15 of i386_gdbstub.c.

Bruce


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