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From: Pedro Alves <palves@redhat.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
Cc: qiyaoltc@gmail.com, Andrew Waterman <andrew@sifive.com>,
	       gdb-patches@sourceware.org, amodra@gmail.com
Subject: Re: [PATCH 1/2] RISC-V GDB Port
Date: Wed, 16 Nov 2016 19:48:00 -0000	[thread overview]
Message-ID: <675d2901-1c73-3ecc-c60e-d29c6a47622e@redhat.com> (raw)
In-Reply-To: <mhng-834536e6-1b2b-493c-ac32-580ef0c5ed89@palmer-mbp2014>

On 11/16/2016 07:40 PM, Palmer Dabbelt wrote:
> On Wed, 16 Nov 2016 11:36:29 PST (-0800), palves@redhat.com wrote:
>> On 11/14/2016 10:39 PM, Palmer Dabbelt wrote:
>>>>>>> +
>>>>>>> +  /* Check any target description for validity.  */
>>>>>>> +  if (tdesc_has_registers (info.target_desc))
>>>>>>> +    {
>>>>>
>>>>> We don't have riscv target description yet.
>>> Yes.  I'm amenable to adding one, but I'm not sure how.
>>>
>>
>> You should really add them.  Take a look at the ARC port,
>> which was recently added:
>>
>>   https://sourceware.org/ml/gdb-patches/2016-09/msg00248.html
> 
> Great, thanks -- I was looking for .dtd files, not .xml files.  

dtd files are standard xml Document Type Definition files.
The dtd file in question is features/gdb-target.dtd.  
I.e., the xml file you'll write follows that dtd.

> From looking at
> their port, it looks like I want to add a
> 
>   gdb/features/riscv.xml

Yup.

> 
> patterned off of
> 
>   gdb/features/arc-v2.xml
> 
> It looks like there's a whole bunch of examples in there, so if I'm on the
> right track I can probably figure it out.

See here too:

 https://sourceware.org/gdb/onlinedocs/gdb/Target-Description-Format.html

FYI, with target descriptions, the remote stub send a target description
that includes whatever custom registers the chip has, and gdb will
include them in "info registers", etc. all without any gdb modification.

Thanks,
Pedro Alves


  reply	other threads:[~2016-11-16 19:48 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1477179037-32066-1-git-send-email-palmer@dabbelt.com>
2016-10-22 23:40 ` GDB port for RISC-V Palmer Dabbelt
2016-10-22 23:40   ` [PATCH 2/2] RISC-V GDB Simulator Port Palmer Dabbelt
2016-10-22 23:40   ` [PATCH 1/2] RISC-V GDB Port Palmer Dabbelt
2016-11-03 12:39     ` Yao Qi
2016-11-14 22:39       ` Palmer Dabbelt
2016-11-16 19:36         ` Pedro Alves
2016-11-16 19:40           ` Palmer Dabbelt
2016-11-16 19:48             ` Pedro Alves [this message]
2016-11-16 21:40         ` Yao Qi
2016-11-01 20:52   ` GDB port for RISC-V Palmer Dabbelt
2016-11-16 19:17   ` Palmer Dabbelt
2016-11-16 19:17     ` [PATCH 2/3] RISC-V GDB Port Palmer Dabbelt
2016-11-16 19:17     ` [PATCH 1/3] RISC-V Sim Port Palmer Dabbelt
2016-11-16 19:17     ` [PATCH 3/3] Add a RISC-V GDB NEWS entry Palmer Dabbelt
2016-11-16 19:41       ` Eli Zaretskii
2016-11-16 19:45         ` Palmer Dabbelt
2017-03-06 20:31 RISC-V GDB Port v3 Palmer Dabbelt
2017-03-06 20:31 ` [PATCH 1/2] RISC-V GDB Port Palmer Dabbelt
2017-04-04 21:48   ` Yao Qi
2017-04-24 16:12     ` Palmer Dabbelt
2017-04-05  9:22   ` Yao Qi

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