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From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: "Petr Hluzín" <petr.hluzin@gmail.com>
Cc: G <tjmadwja@gmail.com>, gdb@sourceware.org
Subject: Re: Debugging variable arguments functions (stdarg)
Date: Fri, 16 Jul 2010 19:12:00 -0000	[thread overview]
Message-ID: <20100716191203.GA20877@host1.dyn.jankratochvil.net> (raw)
In-Reply-To: <AANLkTikrVS4Ol194JZ2PQHKW3at02HEZxE495BEDFXds@mail.gmail.com>

On Fri, 16 Jul 2010 20:57:57 +0200, Petr Hluzín wrote:
> Workaround B:
> Get value of stack pointer (RSP?) of frame MysqlWrapper() and dump raw
> memory around the address. You should see these values somewhere
> around:
> 0x00000000004041e2 (return address in MysqlWrapper)
> 0x406bf0 (the third argument to WriteLog)
> Between these two values should be the values of 3rd and 4th argument.

This is not so simple on x86_64, it passes even (first few) stdarg parameters
in registers.
	http://www.x86-64.org/documentation/abi.pdf


Regards,
Jan


  reply	other threads:[~2010-07-16 19:12 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-15 15:47 G
2010-07-16 18:57 ` Michael Snyder
2010-07-16 18:58 ` Petr Hluzín
2010-07-16 19:12   ` Jan Kratochvil [this message]
2010-07-18 19:28     ` Petr Hluzín
2010-07-19 14:19       ` G

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