Hi Michael,
This thread about how to generate ancillary sections using gas has
resurfaced again. Do you know who might be available from the
toolchain group to take a look at this?
It appears that this issue can best be solved by a change to gas
(or, possibly, to gcc).
Cheers
---Dave
References:
Dynamic patching in discarded sections
<http://thread.gmane.org/gmane.linux.kernel/1152142>
Generating ancilliary sections with gas
<http://thread.gmane.org/gmane.linux.linaro.toolchain/686>
There is a ftbfs on armel bug for postler:
https://bugs.launchpad.net/ubuntu/+source/postler/+bug/791319
Attached test compiles fine on amd64 but fails on armel:
20:16 hrw@malenstwo:postler-0.1.1$ gcc _build_/.conf_check_0/test.c
_build_/.conf_check_0/test.c: In function ‘main’:
_build_/.conf_check_0/test.c:5:1: error: incompatible type for argument
3 of ‘vasprintf’
/usr/include/stdio.h:396:12: note: expected ‘__gnuc_va_list’ but
argument is of type ‘char *’
Can someone explain me why this happens?
Ubuntu armel and armhf cross compilers, CSL 2011.03-42 have same
problem.
Hi
Yesterday I looked at bug [1] in chromium-browser but checked oneiric
version: 12.0.742.91~r87961. It failed on linking to CUPS libraries so I
looked at upstream repository and found fix [2]. With patch applied it
failed on same place:
LINK(target) out/Release/chrome
[keep-alive] czw, 16 cze 2011, 18:21:39 CEST (441 min)
/usr/bin/ld.bfd.real:
out/Release/obj.target/third_party/cacheinvalidation/../../cacheinvalidation_proto_cpp/gen/protoc_out/google/cacheinvalidation/internal.pb.o(.text._ZN12invalidation21ClientToServerMessage27MergePartialFromCodedStreamEPN6google8protobuf2io16CodedInputStreamE+0x7d2): unresolvable R_ARM_THM_CALL relocation against symbol `operator new(unsigned int)@@GLIBCXX_3.4'
/usr/bin/ld.bfd.real: final link failed: Nonrepresentable section on
output
collect2: ld returned 1 exit status
make[1]: *** [out/Release/chrome] Error 1
make[1]: Leaving directory
`/home/hrw/devel/porting-jam/chromium-browser-12.0.742.91~r87961/build-tree/src'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
According to bugs [3][4] package may work when built without -fPIE but
(as Loic wrote in [3]) "-fPIE is needed for some security features and
web browsers are a critical piece of software that we want to protect".
May someone take a look at this issue?
One warning: this fail happens after 440 minutes of build on PandaBoard
with usb hdd (took 1.8GB of space). If needed I can provide account on
my panda with access to build directory (but this rather tomorrow then
today) - IPv6 address only.
1.
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/791283
2.
http://git.chromium.org/gitweb/?p=chromium/chromium.git;a=patch;h=c2b99f3fe…
3. https://bugs.launchpad.net/binutils-linaro/+bug/641126
4. http://code.google.com/p/chromium/issues/detail?id=55439
Hi,
- fix vectorizer testsuite failures on ARM - committed
- committed a fix of a bug in the vectorizer revealed by the widen-mult patch
- committed an improvement of peeling heuristic
- reduce over-widening in case of multiplication by a constant
(improves vectorized rgbyiq by almost 2x) - committed
- started backporting to gcc-linaro-4.6
Ira
The Linaro Toolchain Working Group is pleased to announce the release
of Linaro QEMU 2011.06.
Linaro QEMU 2011.06 is the latest monthly release of qemu-linaro.
Based off upstream (trunk) QEMU, it includes a number of ARM-focused
bug fixes and enhancements.
This release introduces two new features; these are still experimental
so please report any issues:
- A model of the Gumstix Overo board; this is an OMAP3 based system
similar to Beagle but with the advantage of having supported
onboard ethernet.
- USB keyboard and mouse support, if your kernel includes support for
the OMAP3 OHCI controller (not just EHCI). Try adding
"-device usb-kbd -device usb-mouse" to your QEMU command line for
Beagle or Overo models.
Other interesting changes include:
- A fix for the lack of graphics output on the Beagle model when
running the Linaro 11.05 final release image
- Suppression of the "Bad register 0x000000f8" warnings provoked by
the Linaro 11.05 final release kernels
- As usual, various minor correctness fixes and other upstream changes
Known issues:
- The beagle and beaglexm models still do not support USB networking
- There are some gcc 4.6 warnings about "variable set but not used"
which have not yet been resolved; Ubuntu Oneiric's gcc makes these
non-fatal, but if you're building with an upstream gcc 4.6 you may
need to add the "--disable-werror" option to configure
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2011.06
Binary builds of this qemu-linaro release are being prepared and
will be available shortly for users of Ubuntu. Packages will be in
the linaro-maintainers tools ppa:
https://launchpad.net/~linaro-maintainers/+archive/tools/
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
The Linaro Toolchain Working Group is pleased to announce the release
of both Linaro GCC 4.6 and Linaro GCC 4.5.
Linaro GCC 4.6 is the fourth release in the 4.6 series. Based off the
latest GCC 4.6.0+svn174261, it adds new optimisations and vectoriser
improvements.
Interesting changes include:
* Updates to 4.6.0+r174261
* Blocks can now vectorise into ORN and BIC instructions
* Support for half word to double word multiply and accumulate operations
* Better support for other widening multiply operations
* Further performance improvements in NEON strided loads and stores
* Performance improvements targeted at EEMBC CoreMark
Fixes:
* PR target/48454: Set the lengths correctly for the case with Quad vectors.
Known issues:
* Building Python 2.7 with -mfpu=neon exposes a bug in vmov.i64 in
binutils 2.20.51. Please use 2.21 or later.
The strided load/store improvements allow the vectoriser to
efficiently access values that occur at every n'th address, such as
all of the red values in a RGB image or all of the left channel
samples in a interleaved audio array. For example, a plain C function
that converts between RGB and CYMK now runs 7.3 x faster on an A9.
Linaro GCC 4.5 2011.06 is the eleventh release in the 4.5 series.
Based off the latest GCC 4.5.3+svn174250, it is a maintenance focused
release.
Interesting changes in 4.5 include:
* Updates to 4.5.3+r174250
Fixes:
* LP: #744754: ICE in reload_cse_simplify_operands, at
postreload.c:402 with neon optimized code
* LP: #748138: ICE in redirect_jump, at jump.c:1443
The source tarball is available from:
https://launchpad.net/gcc-linaro/+milestone/4.6-2011.06-0https://launchpad.net/gcc-linaro/+milestone/4.5-2011.06-0
Downloads are available from the Linaro GCC page on Launchpad:
https://launchpad.net/gcc-linaro
Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain
Bugs: https://bugs.launchpad.net/gcc-linaro/
Questions? https://ask.linaro.org/
Interested in commercial support? inquire at support(a)linaro.org
-- Michael
Hi there,
I tried to use android-toolchain-eabi-4.5-2011.05-0-linux-x86.tar.bz2
to enable hard float ABI.
But it built failed on Android 2.3.3. Most errors are like address
alignment issues.
Did you have any patch for that? Successfully tested?
Thanks
Richard
My testing for the widening multiplies patches came back clean. I've
committed it upstream, and merged it to Linaro GCC 4.6.
The testing for my Thumb2 constants patches failed (bootstrap failure on
ARM), so can't commit that right away. The failure is a SIGSEGV in the
stage 2 compiler building it's own libgcc. This is going to be tricky to
pin down!
Continued work on widening operations in the GCC middle-end. I now have
it doing all the arbitrary width widening operations that I want. I've
tested that it didn't do the wrong thing for just about all permutations
of input and output types, but I've yet to do anything like a bootstrap
test or anything. There's still quite a lot more work to do in tidying
it up.
----
Upstream patched requiring review:
* NEON scheduling patch
http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01431.html
