early buf termination

early buf termination

[s88]

Hi all:
       I'm implementing a gdb stub for my ARM simulator with TCP connection.
As I query the registers information from gdb, I got
"fetch_register_using_p: early buf termination" msg.

(gdb) info registers
r0             fetch_register_using_p: early buf termination
(gdb)

the gdb client send the packet which contains "$p0#a0" to my gdb server.
The gdb server reply 0 (should be $0#something) to the gdb client.

Does anyone know the meaning of the "early buf termination"?

thanx!!

Dave.
-- 
System  on Chip Design  Lab.
Dept. of Computer Science and Information Engineering,
National Chung Cheng University
E-mail : s88.tw@acm.org

Re: early buf termination

[Daniel Jacobowitz]

On Mon, Jul 09, 2007 at 10:56:21AM +0800, s88 wrote:
> the gdb client send the packet which contains "$p0#a0" to my gdb server.
> The gdb server reply 0 (should be $0#something) to the gdb client.

"Each byte of data is described by two hex digits."  It's bytes of
data, not a number; you need the full width of the register.

-- 
Daniel Jacobowitz
CodeSourcery

Re: early buf termination

[Wenbo Yang]

s88 wrote:

>       I'm implementing a gdb stub for my ARM simulator with TCP connection.
> As I query the registers information from gdb, I got
> "fetch_register_using_p: early buf termination" msg.
> 
> (gdb) info registers
> r0             fetch_register_using_p: early buf termination
> (gdb)
> 
> the gdb client send the packet which contains "$p0#a0" to my gdb server.
> The gdb server reply 0 (should be $0#something) to the gdb client.

You can read remote.c:3419 for more information. I think the meaning is:
unexpected message end. It should be more characters but your message
terminated. You should give GDB the standard RSP response.

Regards,
Wenbo
-- 
Wenbo Yang

The State Key Lab. of Information Security
Graduate School of CAS, 19A Yuquan Road, Beijing, China
Homepage: http://solrex.cn

SimpLight Nanoelectronics Ltd. 6 Zhichun Road, 10th Floor, Beijing, China
Phone: +86-10-5126-6989   ---  Email: wenbo.yang@simplnano.com