Hello Josef:
Thank you for your quick reply. I am profiling an application for ARM so I am
using the cross compiler tools for that ISA, Can you tell me in which file from
Valgrind source code can I find the Instrumentation function that you mention?
can you provide some hints for what would be the procedure to implement this?
What Valgrind document should I read?
Cheers,
Raul.
________________________________________
From: Josef Weidendorfer [josef.weidendor...@gmx.de]
Sent: Tuesday, February 17, 2015 9:40 AM
To: Raul Garcia; valgrind-users@lists.sourceforge.net
Subject: Re: [Valgrind-users] Dump of opcode/mnemonic per code line
Am 16.02.2015 um 22:29 schrieb Raul Garcia:
> |That information is great, but is it possible to get the exact instructions
> (mnemonics) that where utilized/executed
> per each line like in the example below? This information would be really
> valuable to me.
In the instrument function you have access to the guest code bytes. So,
if you add your own
disassembler for the ISA, you can get what you want.
It would be nice if VEX can return the mnemonics. Especially as they are
already in the code as
debug output. As far as I can see, this is "just" some kind of
refactoring effort which
nobody did up to now.
Callgrind's visualization (kcachegrind) calls out to "objdump" to do
annotation on a machine
code level. That's just not working for dynamically generated code. To
support that, your feature
request also would be good.
Josef
>
> | . void swap(int *a, int *b)
> 3,000 { [insta, instb, instc]
> 3,000 int tmp = *a; |||[insta, instb, instc]|
> 4,000 *a = *b; ||||[instd, instd, insta,||||||||||
> instc||||]||
> 3,000 *b = tmp; |||||[instc, insta, instb]|||
> 2,000 }| ||||[instc, insta]||||
>
> Best Regards,
> Raul.
>
>
>
>
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