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[Bug tapsets/18649] int_arg() misbehaves on x86[_64] for 32-bit uprobe in binary having debuginfo
- From: "mcermak at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Thu, 09 Jul 2015 09:32:51 +0000
- Subject: [Bug tapsets/18649] int_arg() misbehaves on x86[_64] for 32-bit uprobe in binary having debuginfo
- Auto-submitted: auto-generated
- References: <bug-18649-6586 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=18649
--- Comment #1 from Martin Cermak <mcermak at redhat dot com> ---
Other arches seem to work fine in this sense except that s390 has following
limitation in tapset/s390/registers.stp:
=======
if (%{ CONTEXT->user_mode_p %}) {
error("Cannot access function args in user context");
return 0;
}
=======
Not sure why this limitation is there. After commenting it out, int_arg() seems
to return correct values.
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