On 12/02/2013 10:24 AM, Bukuli Norbert wrote:
On Mon, 2 Dec 2013 10:15:22 +0100
Philippe Gerum <[email protected]> wrote:
On 12/02/2013 09:50 AM, Bukuli Norbert wrote:
Program received signal SIGILL, Illegal instruction.
[Switching to Thread 338]
0x4800ce74 in ?? ()
(gdb) bt
#0 0x4800ce74 in ?? ()
#1 0x0ff98534 in ?? ()
#2 0x0fe17a68 in ?? ()
#3 0x480eba4c in ?? ()
(gdb) info sharedlibrary
From To Syms Read Shared Object Library
0x00001ff0 0x0001b014
Yes /opt/eldk-5.4/powerpc/sysroots/powerpc-linux/lib/ld.so.1
0x00100360 0x00100648
No /srv/tftpboot/172.31.2.11/lib/modules/3.8.13/vdso/linux-vdso32.so.1
0x0ff979b4 0x0ff9e948
No
/opt/eldk-5.4/powerpc/sysroots/powerpc-linux/usr/xenomai/lib/libpthread_rt.so.1
For some reason, it looks like the program flow jumps to a weird
location. Assuming this backtrace is right, the last location that
would make sense seems to be frame #1 at 0x0ff98534 in
libpthread_rt.so.1, which is Xenomai's POSIX interface library.
- could you please make a full disassembly of libpthread_rt.so.1
accessible via pastebin?
Of course. You can find the output of
$ powerpc-linux-objdump -d libpthread_rt.so.1
here:
http://pastebin.com/uywTZGfg
Ok, thanks. I will have a look.
- we already had these kinds of events a couple of times on different
architectures with new gcc releases due to, either broken TLS code
generation by gcc, or some weaknesses in our inline syscall
trampoline code with respect to expressing constraints. Is
--with-__thread enabled when configuring the Xenomai build for
libaries and programs?
Unfortunatelly I do not know exactly. The stock ELDK-5.4 version of
libpthread_rt.so.1 is used. I will check it up.
Please don't bother. From the disassembly you just sent, TLS support is
not used (--with-__thread disabled).
--
Philippe.
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