[ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315

[ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315

[John Dallaway]

I have generated a new test release of the GNU tools for ARM targets
based on GCC 4.6.3. The new test release avoids issues with GCC 4.6.2. Ref:

  http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001468#c30

These tools are intended for testing within the eCos community. The test
builds can be downloaded from the eCos ftp site and are located under
the "gnutools" directory:

Cygwin-hosted:
gnutools/cygwin/test/ecos-gnutools-arm-eabi-20120315.cygwin.tar.bz2

Linux-hosted:
gnutools/i386linux/test/ecos-gnutools-arm-eabi-20120315.i386linux.tar.bz2

Please use a mirror site in your own geographical region to access these
files. Sites which mirror the eCos ftp area are listed at:

  http://ecos.sourceware.org/mirror.html

The tools may be extracted into the current working directory from the
downloaded archive files by using one of the following commands at a
bash prompt:

  tar jxvf ecos-gnutools-arm-eabi-20120315.cygwin.tar.bz2
  tar jxvf ecos-gnutools-arm-eabi-20120315.i386linux.tar.bz2

The Linux-hosted tools should work on most Linux distributions. The
Cygwin-hosted tools require a recent Cygwin installation including the
"libexpat1" and "libmpc1" packages.

The patches used in generating the 4.6.3-20120315 test toolchain are
identical to those applied for the previous test release (4.6.2-20120125).

When connecting to Cortex-M targets using the build of arm-eabi-gdb
within this toolchain, you may observe an error message:

  Remote 'g' packet reply is too long

In such cases, it will be necessary to use a GDB target description file
as a workaround. A suitable target description file is available at:

  http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001524#c1

Jifl has developed a patch for this issue and we will be patching GDB in
a subsequent build of the toolchain.

Thank you for your feedback on the previous test release tooclhain. Your
feedback on this new test release is also welcome. Please report any
issues at:

  http://bugs.ecos.sourceware.org

John Dallaway
eCos maintainer
http://www.dallaway.org.uk/john

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Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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Re: [ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315

[Lambrecht Jürgen]

On 03/18/2012 05:08 PM, John Dallaway wrote:
>
> I have generated a new test release of the GNU tools for ARM targets
> based on GCC 4.6.3. The new test release avoids issues with GCC 4.6.2. 
> Ref:
>
> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001468#c30
>
I am testing 4.6.2 (AT91SAM9260 platform), and will try 4.6.3 to go on 
(ecos 3.0 builds OK, but our application fails).
But when I want to see those "issues with GCC 4.6.2", I get this:

     You are not authorized to access bug #1001468.

(I can see other bugs.)
Why is this? Maybe something wrong with my account, because when I go to 
my 'permissions tab', I get this:

     There are no permission bits set on your account.

Regards,
Jürgen
>
>
> These tools are intended for testing within the eCos community. The test
> builds can be downloaded from the eCos ftp site and are located under
> the "gnutools" directory:
>
> Cygwin-hosted:
> gnutools/cygwin/test/ecos-gnutools-arm-eabi-20120315.cygwin.tar.bz2
>
> Linux-hosted:
> gnutools/i386linux/test/ecos-gnutools-arm-eabi-20120315.i386linux.tar.bz2
>
> Please use a mirror site in your own geographical region to access these
> files. Sites which mirror the eCos ftp area are listed at:
>
> http://ecos.sourceware.org/mirror.html
>
> The tools may be extracted into the current working directory from the
> downloaded archive files by using one of the following commands at a
> bash prompt:
>
>   tar jxvf ecos-gnutools-arm-eabi-20120315.cygwin.tar.bz2
>   tar jxvf ecos-gnutools-arm-eabi-20120315.i386linux.tar.bz2
>
> The Linux-hosted tools should work on most Linux distributions. The
> Cygwin-hosted tools require a recent Cygwin installation including the
> "libexpat1" and "libmpc1" packages.
>
> The patches used in generating the 4.6.3-20120315 test toolchain are
> identical to those applied for the previous test release (4.6.2-20120125).
>
> When connecting to Cortex-M targets using the build of arm-eabi-gdb
> within this toolchain, you may observe an error message:
>
>   Remote 'g' packet reply is too long
>
> In such cases, it will be necessary to use a GDB target description file
> as a workaround. A suitable target description file is available at:
>
> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001524#c1
>
> Jifl has developed a patch for this issue and we will be patching GDB in
> a subsequent build of the toolchain.
>
> Thank you for your feedback on the previous test release tooclhain. Your
> feedback on this new test release is also welcome. Please report any
> issues at:
>
> http://bugs.ecos.sourceware.org
>
> John Dallaway
> eCos maintainer
> http://www.dallaway.org.uk/john
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>


-- 
Jürgen Lambrecht
R&D Associate
Tel: +32 (0)51 303045    Fax: +32 (0)51 310670
http://www.televic-rail.com
Televic Rail NV - Leo Bekaertlaan 1 - 8870 Izegem - Belgium
Company number 0825.539.581 - RPR Kortrijk

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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Re: [ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315

[Ilija Kocho]

On 19.03.2012 09:18, Lambrecht Jürgen wrote:
> On 03/18/2012 05:08 PM, John Dallaway wrote:
>> I have generated a new test release of the GNU tools for ARM targets
>> based on GCC 4.6.3. The new test release avoids issues with GCC 4.6.2. 
>> Ref:
>>
>> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001468#c30
>>
> I am testing 4.6.2 (AT91SAM9260 platform), and will try 4.6.3 to go on 
> (ecos 3.0 builds OK, but our application fails).
> But when I want to see those "issues with GCC 4.6.2", I get this:
>
>      You are not authorized to access bug #1001468.
>
> (I can see other bugs.)
> Why is this? Maybe something wrong with my account, because when I go to 

There's nothing wrong with your account. This bug is for use by eCos
maintainers.
I apologize for inconvenience.
Below is a copy of the subject link that explains the reason for our
switch to 4.6.3.

Ilija

The comment: ================

Another serious bug in GCC 4.6.2

I have started playing with Cortex-M4 Floating Point Unit and found out that
conversion between float and double doesn't work when hardware floating point
is on: -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16

For instance:

{
     double dbl;
     float flo;

    //.....
     dbl = flo;
    // dbl is rubish
}

It is due to wrong helper library and seem to be the following bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51835

I tried GCC 4.6.3 and it seems to work. I'll do some more tests but IMO we
should start considering of replacing current 4.6.2-20120125 test release with
something newer, possibly 4.6.3. Building of 4.6.3, as noted by Sergei, is quite straight-forward - I just applied the 4.6.2 patches.

Of course, until this is resolved nothing can stop us from hunting warnings
with current test release.



-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

Re: [ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315

[Ilija Kocho]

On 19.03.2012 09:18, Lambrecht Jürgen wrote:
> On 03/18/2012 05:08 PM, John Dallaway wrote:
>> I have generated a new test release of the GNU tools for ARM targets
>> based on GCC 4.6.3. The new test release avoids issues with GCC 4.6.2. 
>> Ref:
>>
>> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001468#c30
>>
> I am testing 4.6.2 (AT91SAM9260 platform), and will try 4.6.3 to go on 
> (ecos 3.0 builds OK, but our application fails).
> But when I want to see those "issues with GCC 4.6.2", I get this:
>
>      You are not authorized to access bug #1001468.
>
> (I can see other bugs.)
> Why is this? Maybe something wrong with my account, because when I go to 

There's nothing wrong with your account. This bug is for use by eCos
maintainers.
I apologize for inconvenience.
Below is a copy of the subject link that explains the reason for our
switch to 4.6.3.

Ilija

The comment: ================

Another serious bug in GCC 4.6.2

I have started playing with Cortex-M4 Floating Point Unit and found out that
conversion between float and double doesn't work when hardware floating point
is on: -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16

For instance:

{
     double dbl;
     float flo;

    //.....
     dbl = flo;
    // dbl is rubish
}

It is due to wrong helper library and seem to be the following bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51835

I tried GCC 4.6.3 and it seems to work. I'll do some more tests but IMO we
should start considering of replacing current 4.6.2-20120125 test release with
something newer, possibly 4.6.3. Building of 4.6.3, as noted by Sergei, is quite straight-forward - I just applied the 4.6.2 patches.

Of course, until this is resolved nothing can stop us from hunting warnings
with current test release.



-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss