[Freeswitch-users] Debian packages for ARM/MIPS/POWERPC

[Stanislav Sinyagin]

See the bottom of the bug description. There's a mismatch between a 16bit
integer array and a function that treats it as array of 32bit floats.
On 13 Dec 2015 3:30 am, "Larry Morley" <lmorley at neny.cslimits.net> wrote:

> According to the ARM docs, the instruction in question decodes to
> "coprocessor data transfer (LDC, STC)". The way that instruction is encoded
> (with the first four bits == xE), the instruction will be executed every
> time it's encountered (i.e., not conditionally).
>
> Stanislav, you said you thought the trap was related to HD math and not
> alignment. Based on what that instruction apparently is, it looks to me
> like you were on the right track.
>
> Do all ARM variants have an FPU, and if not, could this problem stem from
> configure et al. determining there's an FPU on a platform where there isn't
> one?
>
> Hope this helps someone find and eradicate this bug.
>
> - Larry
> On Dec 12, 2015 7:04 PM, "Stanislav Sinyagin" <ssinyagin at gmail.com> wrote:
>
>> https://freeswitch.org/jira/browse/FS-8651
>> the source of the problem is quite deep in the sources of spandsp, so
>> I can't offer a fix.
>>
>>
>> On Thu, Dec 10, 2015 at 10:49 PM, Komar, Jason <jkomar at jbox.ca> wrote:
>> > I get nothing in debug or sip trace. It always dies at mod_spandsp_fax
>> so I
>> > figured it was in that module. At that point freeswitch just restarts
>> > without throwing any errors.
>> >
>> > Kernel log shows:
>> >
>> > Dec 10 14:16:17 antman kernel: [ 5949.832802] Alignment trap: not
>> handling
>> > instruction ecb17a01 at [<b44fe32c>]
>> > Dec 10 14:16:17 antman kernel: [ 5949.834290] Unhandled fault: alignment
>> > exception (0x001) at 0xb4546e4a
>> >
>> > The only part of the exception that is the same every time it happens is
>> > "instruction ecb17a01."
>> >
>> > I would have just opened a JIRA, but I didn't think this was enough
>> > information. I have been Googling trying to figure out how to get more
>> info.
>> >
>> > Jason
>> >
>> >
>> > On Thu, Dec 10, 2015 at 2:37 PM, Stanislav Sinyagin <
>> ssinyagin at gmail.com>
>> > wrote:
>> >>
>> >> Hi, I didn't see any errors, but I'm not using fax, and mostly it's
>> >> bridging the calls and connecting users to a conference. Do you have
>> more
>> >> debugging information?
>> >>
>> >> Most probably the source of the problem is that x86 allows unaligned
>> >> memory access: a word pointer can have any value. And other
>> architectures
>> >> don't allow this, and require the pointers to be aligned to word
>> boundaries.
>> >> Mongodb, for example, is known to fail on any non-x86 CPU because of
>> that.
>> >>
>> >> So, probably mod_spandsp needs an audit.
>> >>
>> >> On 10 Dec 2015 21:11, "Komar, Jason" <jkomar at jbox.ca> wrote:
>> >>>
>> >>> Your instructions worked great for me building on/for my Odroid-U3
>> (arm)
>> >>> running Debian Jessie.
>> >>>
>> >>> I know you are running on arm at scaleway. Do you ever run into any
>> >>> alignment issues? I'm getting alignment exception faults receiving
>> faxes and
>> >>> I'm having trouble pulling any useful debug messages.
>> >>>
>> >>> Thanks,
>> >>> Jason
>> >>>
>> >>> On Mon, Nov 30, 2015 at 9:27 AM, Stanislav Sinyagin <
>> ssinyagin at gmail.com>
>> >>> wrote:
>> >>>>
>> >>>> hi,
>> >>>>
>> >>>> I put together the build scenario that I tested for ARM (armhf at
>> >>>> scaleway.com), and it should also work for other architectures:
>> >>>>
>> >>>>
>> >>>>
>> https://freeswitch.org/confluence/display/FREESWITCH/Building+debs+for+other+architectures
>> >>>>
>> >>>> It will be great if someone tests them on other architectures too.
>> >>>>
>> >>>>
>> >>>> cheers,
>> >>>> stanislav
>> >>>>
>> >>>>
>> >>>>
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