Mailing List Archive

On Fri, 2012-09-07 at 13:28 +0200, Marcin Mielniczuk wrote:

> 2) Is there any way to run hard float software on soft float w/o
> recompile?

Using a hardfp chroot.

--
Kaj-Michael Lang <milang@tal.org>

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According to ARM
documentation<http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0041c/ch11s02s02.html>,
you shouldn't combine them. What I would like to know is if Harmattan
binaries are softfp or hardfp, as it seems that there is a mix of them, how
is it solved in Harmattan?

Long time ago I started a
thread<http://talk.maemo.org/showthread.php?t=75868>asking about
emulation of hardfp.

Regards

2012/9/7 Marcin Mielniczuk <marmistrz@linux.pl>

> Hi,
>
> I was trying to run some N9 PR1.x apps and get segfaults. So I need to
> solve several things out.
> 1) N9 PR is compiled with hard float and N900 has soft float, right?
> 2) Is there any way to run hard float software on soft float w/o recompile?
>
> this may improve the compatiblity of meecolay
>
> Thanks in advance
> --
> Marcin
>
>
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers@maemo.org
> https://lists.maemo.org/mailman/listinfo/maemo-developers
>
>


--
Iván Gálvez Junquera

AFAIK, the PR bins are hardfp, but the store apps are mainly softfp. Why I
think so: PR bins segfault:

Program received signal SIGSEGV, Segmentation fault

0x00000000 in ?? ()

0x00000000:


So I guess it's hardfp thing.

But normal store apps run mainly ok (or at least don't segfault in
0x00000000)

I recall something like hardfp to softfp emulator in case of flash player
or something. Is this compile time only, or can we use it with a built app?

Regards,
--
Marcin



2012/9/7 Iván Gálvez Junquera <ivgalvez@gmail.com>

> According to ARM documentation<http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0041c/ch11s02s02.html>,
> you shouldn't combine them. What I would like to know is if Harmattan
> binaries are softfp or hardfp, as it seems that there is a mix of them, how
> is it solved in Harmattan?
>
> Long time ago I started a thread<http://talk.maemo.org/showthread.php?t=75868>asking about emulation of hardfp.
>
> Regards
>
> 2012/9/7 Marcin Mielniczuk <marmistrz@linux.pl>
>
>> Hi,
>>
>> I was trying to run some N9 PR1.x apps and get segfaults. So I need to
>> solve several things out.
>> 1) N9 PR is compiled with hard float and N900 has soft float, right?
>> 2) Is there any way to run hard float software on soft float w/o
>> recompile?
>>
>> this may improve the compatiblity of meecolay
>>
>> Thanks in advance
>> --
>> Marcin
>>
>>
>>
>> _______________________________________________
>> maemo-developers mailing list
>> maemo-developers@maemo.org
>> https://lists.maemo.org/mailman/listinfo/maemo-developers
>>
>>
>
>
> --
> Iván Gálvez Junquera
>

flashplayer uses a wapper lib to convert softfp calling convention to hardfp. you may want to do the same :)


>-------- Оригинално писмо --------
>От: Marcin Mielniczuk
>Относно: Re: Soft and hard float
>До: Iván Gálvez Junquera
>Изпратено на: Петък, 2012, Септември 7 15:11:06 EEST
>
>
>AFAIK, the PR bins are hardfp, but the store apps are mainly softfp. Why I think so: PR bins segfault:
>Program received signal SIGSEGV, Segmentation fault0x00000000 in ?? () 0x00000000:     
>So I guess it&#39;s hardfp thing.
>But normal store apps run mainly ok (or at least don&#39;t segfault in 0x00000000)
>I recall something like hardfp to softfp emulator in case of flash player or something. Is this compile time only, or can we use it with a built app? 
>Regards,--Marcin
>
>
>2012/9/7 Iván Gálvez Junquera
>According to ARM documentation, you shouldn&#39;t combine them. What I would like to know is if Harmattan binaries are softfp or hardfp, as it seems that there is a mix of them, how is it solved in Harmattan?
>Long time ago I started a thread asking about emulation of hardfp.
>Regards
>2012/9/7 Marcin Mielniczuk
>Hi,
>I was trying to run some N9 PR1.x apps and get segfaults. So I need to solve several things out.1) N9 PR is compiled with hard float and N900 has soft float, right?2) Is there any way to run hard float software on soft float w/o recompile?
>this may improve the compatiblity of meecolay
>Thanks in advance--Marcin
>
>
>_______________________________________________
>maemo-developers mailing list
>maemo-developers@maemo.org
>https://lists.maemo.org/mailman/listinfo/maemo-developers
>
>
>
>--
>Iván Gálvez Junquera
>
>
_______________________________________________
maemo-developers mailing list
maemo-developers@maemo.org
https://lists.maemo.org/mailman/listinfo/maemo-developers

Thanks,
Is the lib Adobe-written or is it something public?
How can we check whether an app is hardfp/softfp?
Btw. it's no rule that N9 apps are hardfp. I've successfully launched Nokia
Drive but only a splash is shown. I'll cover the details soon.
Regards,
--
Marcin



2012/9/7 Ивайло Димитров <freemangordon@abv.bg>

>
> flashplayer uses a wapper lib to convert softfp calling convention to
> hardfp. you may want to do the same :)
>
>
> >-------- Оригинално писмо --------
> >От: Marcin Mielniczuk
> >Относно: Re: Soft and hard float
> >До: Iván Gálvez Junquera
> >Изпратено на: Петък, 2012, Септември 7 15:11:06 EEST
> >
> >
> >AFAIK, the PR bins are hardfp, but the store apps are mainly softfp. Why
> I think so: PR bins segfault:
> >Program received signal SIGSEGV, Segmentation fault0x00000000 in ??
> () 0x00000000:
> >So I guess it&#39;s hardfp thing.
> >But normal store apps run mainly ok (or at least don&#39;t segfault in
> 0x00000000)
> >I recall something like hardfp to softfp emulator in case of flash
> player or something. Is this compile time only, or can we use it with a
> built app?
> >Regards,--Marcin
> >
> >
> >2012/9/7 Iván Gálvez Junquera
> >According to ARM documentation, you shouldn&#39;t combine them. What I
> would like to know is if Harmattan binaries are softfp or hardfp, as it
> seems that there is a mix of them, how is it solved in Harmattan?
> >Long time ago I started a thread asking about emulation of hardfp.
> >Regards
> >2012/9/7 Marcin Mielniczuk
> >Hi,
> >I was trying to run some N9 PR1.x apps and get segfaults. So I need to
> solve several things out.1) N9 PR is compiled with hard float and N900 has
> soft float, right?2) Is there any way to run hard float software on soft
> float w/o recompile?
> >this may improve the compatiblity of meecolay
> >Thanks in advance--Marcin
> >
> >
> >_______________________________________________
> >maemo-developers mailing list
> >maemo-developers@maemo.org
> >https://lists.maemo.org/mailman/listinfo/maemo-developers
> >
> >
> >
> >--
> >Iván Gálvez Junquera
> >
> >
>

Hi,

Splash screens are shown by invoker; an app could have crashed with the splash still showing.

--
Regards,
Mohammad Abu-Garbeyyeh

On Sep 8, 2012, at 6:48 PM, Marcin Mielniczuk <marmistrz@linux.pl> wrote:

> Thanks,
> Is the lib Adobe-written or is it something public?
> How can we check whether an app is hardfp/softfp?
> Btw. it's no rule that N9 apps are hardfp. I've successfully launched Nokia Drive but only a splash is shown. I'll cover the details soon.
> Regards,
> --
> Marcin
>
>
>
> 2012/9/7 Ивайло Димитров <freemangordon@abv.bg>
>
> flashplayer uses a wapper lib to convert softfp calling convention to hardfp. you may want to do the same :)
>
>
> >-------- Оригинално писмо --------
> >От: Marcin Mielniczuk
> >Относно: Re: Soft and hard float
> >До: Iván Gálvez Junquera
> >Изпратено на: Петък, 2012, Септември 7 15:11:06 EEST
> >
> >
> >AFAIK, the PR bins are hardfp, but the store apps are mainly softfp. Why I think so: PR bins segfault:
> >Program received signal SIGSEGV, Segmentation fault0x00000000 in ?? () 0x00000000:
> >So I guess it&#39;s hardfp thing.
> >But normal store apps run mainly ok (or at least don&#39;t segfault in 0x00000000)
> >I recall something like hardfp to softfp emulator in case of flash player or something. Is this compile time only, or can we use it with a built app?
> >Regards,--Marcin
> >
> >
> >2012/9/7 Iván Gálvez Junquera
> >According to ARM documentation, you shouldn&#39;t combine them. What I would like to know is if Harmattan binaries are softfp or hardfp, as it seems that there is a mix of them, how is it solved in Harmattan?
> >Long time ago I started a thread asking about emulation of hardfp.
> >Regards
> >2012/9/7 Marcin Mielniczuk
> >Hi,
> >I was trying to run some N9 PR1.x apps and get segfaults. So I need to solve several things out.1) N9 PR is compiled with hard float and N900 has soft float, right?2) Is there any way to run hard float software on soft float w/o recompile?
> >this may improve the compatiblity of meecolay
> >Thanks in advance--Marcin
> >
> >
> >_______________________________________________
> >maemo-developers mailing list
> >maemo-developers@maemo.org
> >https://lists.maemo.org/mailman/listinfo/maemo-developers
> >
> >
> >
> >--
> >Iván Gálvez Junquera
> >
> >
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers@maemo.org
> https://lists.maemo.org/mailman/listinfo/maemo-developers

Hi,

This splash screen is a Qt one. It shows the Noka Drive icon and the
refresh icon.
It can't be an invoker-launched splash, as this port:
http://talk.maemo.org/showthread.php?t=85716 is faulty. I'll need to perror
a bit, and if you want, you may look into this maybe you'll find why 141
error code is returned.

If you'd like to, you may try Drive out by

> LD_PRELOAD="/opt/meecolay/lib/libdsme_dbus_if.so.0.2.0:/opt/meecolay/lib/libbmeipc.so.0"
> meecolay drive-qml


--
Marcin



2012/9/9 Mohammad Abu-Garbeyyeh <mohammad7410@gmail.com>

> Hi,
>
> Splash screens are shown by invoker; an app could have crashed with the
> splash still showing.
>
> --
> Regards,
> Mohammad Abu-Garbeyyeh
>
> On Sep 8, 2012, at 6:48 PM, Marcin Mielniczuk <marmistrz@linux.pl> wrote:
>
> Thanks,
> Is the lib Adobe-written or is it something public?
> How can we check whether an app is hardfp/softfp?
> Btw. it's no rule that N9 apps are hardfp. I've successfully launched
> Nokia Drive but only a splash is shown. I'll cover the details soon.
> Regards,
> --
> Marcin
>
>
>
> 2012/9/7 Ивайло Димитров <freemangordon@abv.bg>
>
>>
>> flashplayer uses a wapper lib to convert softfp calling convention to
>> hardfp. you may want to do the same :)
>>
>>
>> >-------- Оригинално писмо --------
>> >От: Marcin Mielniczuk
>> >Относно: Re: Soft and hard float
>> >До: Iván Gálvez Junquera
>> >Изпратено на: Петък, 2012, Септември 7 15:11:06 EEST
>> >
>> >
>> >AFAIK, the PR bins are hardfp, but the store apps are mainly softfp.
>> Why I think so: PR bins segfault:
>> >Program received signal SIGSEGV, Segmentation fault0x00000000 in ??
>> () 0x00000000:
>> >So I guess it&#39;s hardfp thing.
>> >But normal store apps run mainly ok (or at least don&#39;t segfault in
>> 0x00000000)
>> >I recall something like hardfp to softfp emulator in case of flash
>> player or something. Is this compile time only, or can we use it with a
>> built app?
>> >Regards,--Marcin
>> >
>> >
>> >2012/9/7 Iván Gálvez Junquera
>> >According to ARM documentation, you shouldn&#39;t combine them. What I
>> would like to know is if Harmattan binaries are softfp or hardfp, as it
>> seems that there is a mix of them, how is it solved in Harmattan?
>> >Long time ago I started a thread asking about emulation of hardfp.
>> >Regards
>> >2012/9/7 Marcin Mielniczuk
>> >Hi,
>> >I was trying to run some N9 PR1.x apps and get segfaults. So I need to
>> solve several things out.1) N9 PR is compiled with hard float and N900 has
>> soft float, right?2) Is there any way to run hard float software on soft
>> float w/o recompile?
>> >this may improve the compatiblity of meecolay
>> >Thanks in advance--Marcin
>> >
>> >
>> >_______________________________________________
>> >maemo-developers mailing list
>> >maemo-developers@maemo.org
>> >https://lists.maemo.org/mailman/listinfo/maemo-developers
>> >
>> >
>> >
>> >--
>> >Iván Gálvez Junquera
>> >
>> >
>>
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers@maemo.org
> https://lists.maemo.org/mailman/listinfo/maemo-developers
>
>

On Sat, 08 Sep 2012 17:48:01 +0200, Marcin Mielniczuk wrote:
> Thanks,
> Is the lib Adobe-written or is it something public?

You cannot really write a "generic" soft<->hardfp (without PLT trickery)
bridge unless you plan to pre-specify the set of functions your hardfp
binaries will call.

Personally, I think that it would be easier for you to, instead of
contaminating Fremantle with lots of Harmattan-ABI-compatible libraries,
to just create a Harmattan chroot.

> How can we check whether an app is hardfp/softfp?

You'll find some pretty good explanations if you google a bit about
readelf and hardfp/softfp.

Javier.

_______________________________________________
maemo-developers mailing list
maemo-developers@maemo.org
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Thanks!
--
Marcin



2012/9/10 Javier S. Pedro <maemo@javispedro.com>

> On Sat, 08 Sep 2012 17:48:01 +0200, Marcin Mielniczuk wrote:
> > Thanks,
> > Is the lib Adobe-written or is it something public?
>
> You cannot really write a "generic" soft<->hardfp (without PLT trickery)
> bridge unless you plan to pre-specify the set of functions your hardfp
> binaries will call.
>
> Personally, I think that it would be easier for you to, instead of
> contaminating Fremantle with lots of Harmattan-ABI-compatible libraries,
> to just create a Harmattan chroot.
>
> > How can we check whether an app is hardfp/softfp?
>
> You'll find some pretty good explanations if you google a bit about
> readelf and hardfp/softfp.
>
> Javier.
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers@maemo.org
> https://lists.maemo.org/mailman/listinfo/maemo-developers
>

Hardfp seems to not be the problem. I checked two apps segfaulting on 0x00000000 and 2 apps running ok.
readelf -A gives the same output (attatched) for all of them

The apps were: segfaulting MeegoQQ and AccuWeather (wxapp),
working allegro and QToDo.

What may cause the segfaults? filebox for N9 causes this kind of fault too. I'm using cssu testing (not thumb flavor)
--
Sent from my Nokia N900
Marcin

2012/9/10 Marcin Mielniczuk <marmistrz@linux.pl>:
> Hardfp seems to not be the problem. I checked two apps segfaulting on
> 0x00000000 and 2 apps running ok.
> readelf -A gives the same output (attatched) for all of them
>
> The apps were: segfaulting MeegoQQ and AccuWeather (wxapp),
> working allegro and QToDo.
>
> What may cause the segfaults? filebox for N9 causes this kind of fault too.
> I'm using cssu testing (not thumb flavor)

Note that the dynamic loader will happily link two binaries using hard
and softfp. Therefore, problems of this nature will seemingly appear
randomly, depending on where and when an app does floating point
calls. It does not matter if you link hard with softfp if neither is
doing any function call containing floating point parameters / return
types. As soon as one such call is made, then things MAY go wrong, and
in ways you'd never expect.

As usual when you approach the "undefined behavior" area, whatever you
experience might be caused by this, or might be caused by the phase of
the moon (aka something entirely different, unrelated, and often
totally unexpected :) ).

Javier.
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maemo-developers mailing list
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You may want to capture some meaningful backtrace to help us find what is segfaulting. In order to do that you should install as many related -dbg packages as possible.


>-------- Оригинално писмо --------
>От: Marcin Mielniczuk
>Относно: Re: Soft and hard float
>До: Javier S. Pedro , maemo-developers@maemo.org
>Изпратено на: Понеделник, 2012, Септември 10 20:46:02 EEST
>
>
>
>Hardfp seems to not be the problem. I checked two apps segfaulting on 0x00000000 and 2 apps running ok.
>readelf -A gives the same output (attatched) for all of them
>
>The apps were: segfaulting MeegoQQ and AccuWeather (wxapp),
>&#32;working allegro and QToDo.
>
>What may cause the segfaults? filebox for N9 causes this kind of fault too. I'm using cssu testing (not thumb flavor)
>--
>Sent from my Nokia N900
>Marcin
>
_______________________________________________
maemo-developers mailing list
maemo-developers@maemo.org
https://lists.maemo.org/mailman/listinfo/maemo-developers

How can I check whether anything which was linked is using hard float? As
everything I've seen in meecolay lib is using SP and DP HardFP use (as
normal maemo builds).

may the mismatch of thumb1 and thumb2 be the problem?
--
Marcin



2012/9/11 Ивайло Димитров <freemangordon@abv.bg>

>
>
> You may want to capture some meaningful backtrace to help us find what is
> segfaulting. In order to do that you should install as many related -dbg
> packages as possible.
>
>
> >-------- Оригинално писмо --------
> >От: Marcin Mielniczuk
> >Относно: Re: Soft and hard float
> >До: Javier S. Pedro , maemo-developers@maemo.org
> >Изпратено на: Понеделник, 2012, Септември 10 20:46:02 EEST
> >
> >
> >
> >Hardfp seems to not be the problem. I checked two apps segfaulting on
> 0x00000000 and 2 apps running ok.
> >readelf -A gives the same output (attatched) for all of them
> >
> >The apps were: segfaulting MeegoQQ and AccuWeather (wxapp),
> >&#32;working allegro and QToDo.
> >
> >What may cause the segfaults? filebox for N9 causes this kind of fault
> too. I'm using cssu testing (not thumb flavor)
> >--
> >Sent from my Nokia N900
> >Marcin
> >
>