Re: [ros-dev] connect gdb to named pipe in ms virtual pc session

[Theodor Willax]

Hello Filip,

I see what your patch should achieve. But pipetunnel doesn't work although I 
defined out the serial port detection code according to your patch.

I will post if I'm successful in getting pipetunnel to work on virtual pc.

Thanks,
Theo

>  From: Filip Navara <xnavara(a)volny.cz>
> Reply-To: ReactOS Development List <ros-dev(a)reactos.com>
> To: ReactOS Development List <ros-dev(a)reactos.com>
> Subject: Re: [ros-dev] connect gdb to named pipe in ms virtual pc session
> Date: Wed, 03 Nov 2004 19:37:21 +0100
>
> Theodor Willax wrote:
>
> >  a) Do I need to compile the cvs snapshot with
> > special make options to 
> > debug trough serial ports? 
> Generally no, but for Virtual PC you need to get do a CVS build of HAL with 
> hacked serial port detection. The standard detection approach doesn't work 
> in VPC because of "bug" in the emulated hardware. (Yes, it's really broken.
>
> It works in Linux because it assumes that two ports always exist and skips 
> the detection. See the Linux source for details.) I don't have the original 
> patch I used while debugging the S3 driver under VPC anymore, but the 
> attached one should work (I hope)...
>
> BTW, I'm not able to answer your other questions, sorry.
>
> Regards,
> Filip
>
> Index: hal/halx86/kdbg.c
> ===================================================================
> RCS file: /CVS/ReactOS/reactos/hal/halx86/kdbg.c,v
> retrieving revision 1.8
> diff -u -r1.8 kdbg.c
> --- hal/halx86/kdbg.c	29 Apr 2004 17:06:21 -0000	1.8
> +++ hal/halx86/kdbg.c	3 Nov 2004 18:32:30 -0000
> @@ -102,6 +102,7 @@
>           /* clear all modem output bits */
>           WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x10);
>
> +#if 0
>           /* read the Modem Status Register */
>           msr = READ_PORT_UCHAR (SER_MSR(BaseAddress));
>
> @@ -123,6 +124,7 @@
>                    */
>                   if ((msr & 0xF0) == 0xF0)
>                   {
> +#endif
>                           /*
>                            * setup a resonable state for the port:
>                            * enable fifo and clear recieve/transmit buffers
> @@ -133,8 +135,10 @@
>                           READ_PORT_UCHAR (SER_RBR(BaseAddress));
>                           WRITE_PORT_UCHAR (SER_IER(BaseAddress), 0);
>                           found = TRUE;
> +#if 0
>                   }
>           }
> +#endif
>
>           /* restore MCR */
>           WRITE_PORT_UCHAR (SER_MCR(BaseAddress), mcr);
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