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From: "cosmin.chenaru at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug dyninst/15136] stapdyn doesn't fill registers on 32-bit x86
Date: Fri, 24 Apr 2020 16:58:37 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D15136

Cosmin Chenaru <cosmin.chenaru at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cosmin.chenaru at gmail do=
t com

--- Comment #1 from Cosmin Chenaru <cosmin.chenaru at gmail dot com> ---
Hi. I realize I am 7 years late, but only now I had to instrument a 32-bit
application using SystemTap and Dyninst. I took a look in the latest code f=
or
Dyninst, inside EmitterIA32::emitCall(), and to my little understanding I s=
ee
that there is still no support in passing the registers of the probe in ord=
er
for SystemTap to get them through enter_dyninst_uprobe_regs().

So can you please tell me, why can't Dyninst obtain the registers during
runtime on x86, and on x64 there is no such limitation?

Thank you.

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