From: fche@redhat.com (Frank Ch. Eigler)
To: Zheng Da <zhengda1936@gmail.com>
Cc: William Cohen <wcohen@redhat.com>,
"Turgis, Frederic" <f-turgis@ti.com>,
"systemtap@sourceware.org" <systemtap@sourceware.org>
Subject: Re: error to run systemtap in an ARM platform
Date: Sun, 24 Jul 2011 16:10:00 -0000 [thread overview]
Message-ID: <y0mhb6bvew6.fsf@fche.csb> (raw)
In-Reply-To: <y0msjpwv3t8.fsf@fche.csb> (Frank Ch. Eigler's message of "Sat, 23 Jul 2011 21:57:07 -0400")
I wrote:
>> semantic error: failed to retrieve return value location for vfs_write
>> (/build/tegra2_seaboard/tmp/portage/sys-kernel/chromeos-kernel-9999/work/chromeos-kernel-9999/fs/read_write.c):
>> identifier '$return' at read-write.stp:7:6
>> source: if ($return > 0) {
>> ^
>> [...]
>> Any ideas how to debug the problem?
>
> In this case, I might try focusing the debugger on the function
> arm_return_value_location(), probably in elfutils' libebl_arm.so.
For example, you could use a debugger. Or, with a native
user-space-capable kernel, run stap on stap:
stap .../examples/general/varwatch.stp \
'process("/usr/lib*/elfutils/libebl_*.so").statement("*return_value*@*:*")' \
'$$vars$' \
-c 'stap -p2 read-write.stp'
- FChE
next prev parent reply other threads:[~2011-07-24 16:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-15 0:58 Da Zheng
2011-07-15 9:43 ` Mark Wielaard
2011-07-15 20:00 ` Da Zheng
2011-07-15 20:15 ` Frank Ch. Eigler
[not found] ` <4E20A714.9020404@gmail.com>
2011-07-15 20:50 ` Frank Ch. Eigler
2011-07-15 20:46 ` William Cohen
2011-07-15 21:29 ` Da Zheng
2011-07-16 0:23 ` Turgis, Frederic
2011-07-18 14:13 ` William Cohen
2011-07-18 19:02 ` Da Zheng
2011-07-18 20:10 ` William Cohen
2011-07-18 20:18 ` William Cohen
2011-07-18 20:41 ` Da Zheng
2011-07-23 22:56 ` Zheng Da
2011-07-24 1:57 ` Frank Ch. Eigler
2011-07-24 16:10 ` Frank Ch. Eigler [this message]
2011-07-25 10:04 ` Mark Wielaard
2011-07-25 19:34 ` Da Zheng
2011-07-25 15:46 ` William Cohen
2011-07-25 19:36 ` Da Zheng
2011-07-25 20:46 ` Mark Wielaard
2011-07-25 17:17 ` William Cohen
2011-07-25 19:56 ` Da Zheng
2011-07-26 14:03 ` William Cohen
2011-07-26 17:47 ` Da Zheng
2011-07-19 11:38 ` Turgis, Frederic
2011-07-18 14:00 ` William Cohen
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