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Re: [Qemu-devel] [RFC v3] monitor: add memory search commands s, sp


From: Claudio Fontana
Subject: Re: [Qemu-devel] [RFC v3] monitor: add memory search commands s, sp
Date: Mon, 16 Mar 2015 16:54:36 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.0.1

On 16.03.2015 16:01, Paolo Bonzini wrote:
> 
> 
> On 16/03/2015 15:45, Eric Blake wrote:
>> On 03/16/2015 04:31 AM, address@hidden wrote:
>>> From: Claudio Fontana <address@hidden>
>>>
>>> usage is similar to the commands x, xp.
>>>
>>> Example with string: looking for "ELF" header in memory:
>>>
>>> (qemu) s/1000000cb 0x40001000 "ELF" searching memory area
>>> [0000000040001000-00000000400f5240] 0000000040090001 (qemu) x/20b
>>> 0x40090000 0000000040090000: '\x7f' 'E' 'L' 'F' '\x02' '\x01'
>>> '\x01' '\x03' 0000000040090008: '\x00' '\x00' '\x00' '\x00'
>>> '\x00' '\x00' '\x00' '\x00' 0000000040090010: '\x02' '\x00'
>>> '\xb7' '\x00'
>>>
>>> Example with value: looking for 64bit variable value 0x990088
>>>
>>> (qemu) s/1000000xg 0xffff900042000000 0x990088 searching memory
>>> area [ffff900042000000-ffff9000427a1200] ffff9000424b3000 
>>> ffff9000424c1000
>>>
>>> Signed-off-by: Claudio Fontana <address@hidden> --- 
>>> hmp-commands.hx |  28 ++++++++++++ monitor.c       | 140
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files
>>> changed, 168 insertions(+)
>>>
>>> Hello, looking for some comments on whether the addition of this 
>>> command is welcome, and whether the syntax chosen is acceptable, 
>>> or how it can made better.
>>
>> Do you want to provide a QMP counterpart?  In general, we are
>> reluctant to add new HMP functionality that cannot also be accessed
>> via QMP.
> 
> I think this is okay for a debugging command.  x and xp do not have an
> QMP equivalent either.
> 
> Paolo
> 

Just let me know if necessary (personally I would not have a use for a QMP 
counterpart).

Thanks,

Claudio


-- 
Claudio Fontana
Server Virtualization Architect
Huawei Technologies Duesseldorf GmbH
Riesstra├če 25 - 80992 M├╝nchen

office: +49 89 158834 4135
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