Re: [Qemu-devel] QEMU as ISS (Instruction Set Simulator)

["Alex Bennée" <alex.bennee@linaro.org>]

Libo Zhou <zhlb29@foxmail.com> writes:

> Do you know where in the source file I should look into to add my custom logging functionality?
>
>
> Or, would you suggest using gdb to look at my target register and memory contents? The answer in this link below looks really promising. I'm gonna give it a try first.
>
> https://stackoverflow.com/questions/39503997/how-to-run-a-single-line-of-assembly-then-see-r1-and-condition-flags

The gdbstub should allow you do full introspection and adding
additional registers is fairly easy, see FOO_gdb_[set|get]_reg helpers
in the appropriate target/FOO directories.

> However, if I am able to customize log, it will be super convenient.

So you want something above what -d cpu will show you?

>
>
>
> Cheers,
>
> Libo
>
>
>
> ------------------ Original ------------------
> From:  "Aleksandar Markovic";<aleksandar.m.mail@gmail.com>;
> Send time: Thursday, Sep 5, 2019 6:54 PM
> To: "Libo Zhou"<zhlb29@foxmail.com>;
> Cc: "qemu-devel"<qemu-devel@nongnu.org>;
> Subject:  Re: [Qemu-devel] QEMU as ISS (Instruction Set Simulator)
>
>
>
> 04.09.2019. 05.23, "Libo Zhou" <zhlb29@foxmail.com> ?е написао/ла:
>>
>> Hi Aleksandar,
>>
>> I have spent some time looking at your MXU ASE patch. It's super helpful.
> I need to do exactly the same thing as you did.
>>
>> Now I just need a way to observe the memory and register file contents to
> debug my instruction set simulator. I played with the "-d" switch to log a
> bunch of information, but it seems that none of the items is of my
> interest. The "-d cpu_reset" option displays all zeros in the GPR log.
>>
>
> It looks you need a custom logging tailored to your needs, based on
> intercepting the instructions you added.
>
> Aleksandar
>
>> Please take your time, as I fully understand you need to work on Qemu
> while answering all my questions. Again, thank you very much for your help!
>>
>> Cheers,
>> Libo
>>


--
Alex Bennée