* On holiday [6/20]
# Progress #
* TCWG-655, Workaround ARM linux kernel ptrace bug. [2/20]
After the discussion, patch is posted. Pedro is on holiday, so the
patch is pending there for review.
* TCWG-518, ARM range stepping patches. [3/20]
The last "to-be-approved" patch is posted. Pending for review.
* TCWG-333, Thumb mode function pointer assignment in GDB. [2/20]
Working on a patch to handle both ARM/thumb and PPC64.
* TCWG-179, TLS variables can't be resolved in aarch64 GDB. [4/20]
GCC doesn't produce DW_AT_location
for TLS variable, because target hook TARGET_ASM_OUTPUT_DWARF_DTPREL
isn't defined for AArch64. Thanks to Jiong and Szabolcs's help, pick
up knowledge on TLS descriptor and TLS modes quickly. Still need to
figure out how to describe the location of TLS variable in debug info
if they are unknown in compilation/link time.
* Fix gdb.gdb/*.exp and gdb.mi/mi-reverse.exp test fails. [1/20]
* Upstreams patch review. [1/20]
* LAS16, sort out the invitation letter for US visa. [1/20]
# Plan #
* TCWG-333, TCWG-518, TCWG-655 and TCWG-179
* US visa application.
--
Yao
The Linaro Toolchain Working Group (TCWG) is pleased to announce the
2016.07 snapshot of Linaro GCC 6 source packages.
Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.1+svn238201 and
includes performance improvements and bug fixes backported from
mainline GCC. This snapshot contents will be part of the 2016.08
stable[2] quarterly release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 6.1+svn238201
Subscribe to the important Linaro mailing lists and join our IRC
channels to stay on top of Linaro development.
** Linaro Toolchain Development "mailing list":
http://lists.linaro.org/mailman/listinfo/linaro-toolchain
** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@
* Bug reports should be filed in bugzilla against GCC product:
http://bugs.linaro.org/enter_bug.cgi?product=GCC
* Interested in commercial support? inquire at "Linaro support":
mailto:support@linaro.org
[1]. Source package snapshots are defined when the compiler is only
put through unit-testing and full validation is not performed.
[2]. Stable source package releases are defined as releases where the
full Linaro Toolchain validation plan is executed.
Hi Linaro Members,
while I am cross compiling the wpa supplicant with toolchain gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf for hostapd and nl80211 mode enabled in menuconfig I am getting linker message ld:cannot find -lnl -3 (libnl) .I tried to locate the libnl libraries but they are not built in.could you please let me know how to enabled libnl in the toolchain.
Thanks
Best Regards --
Best Regards,
Rohit Kamat
CallSend SMSCall from mobileAdd to SkypeYou'll need Skype CreditFree via Skype
== Progress ==
* ARM: Do not test for CPUs, use SubtargetFeatures [TCWG-623]
- Committed all 3 patches upstream
* ARM: Different ABI functions based on optimization level [TCWG-669]
- Patch in upstream review, had to rework it a bit
* PR26038 - inline assembly assertion building ARM linux kernel [TCWG-590]
- Patch in upstream review
* Refactor SelectionDAGBuilder::visitInlineAsm [TCWG-643]
- In progress (trying to break it up into a few helper functions)
* Misc
- TCWG Sprint prep (slides etc)
== Plan ==
* TCWG Sprint
* Commit TCWG-669 and address any review comments on TCWG-590
== Progress ==
TCWG-653 ARM/Thumb interworking veneers
Committed upstream after several review rounds and at least one set of
build bot failures in systems/compilers we don't have set up.
TCWG-612 ARM TLS support in LLD
Have an implementation and most of the tests. Should be ok to upstream
next week.
Found that llvm-mc doesn't implement .word sym(tlsldo). Have a simple
fix that I'll need to upstream before I can test local-dynamic.
== Plan ==
11 - 15th July TCWG Sprint
== Absences ==
25th July - 20th August Sabbatical
The Linaro Binary Toolchain
============================
The Linaro GCC 5.3-2016.05-rc2 Release-Candidate is now available.
Notice: All Linaro GCC 5 series toolchain users should migrate to the
latest version of the Linaro GCC 5 toolchain in order to mitigate
potential security exposure to CVE-2015-7547. See the NEWS section
below for details.
Download release-candidate packages from:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.05-rc2/http://snapshots.linaro.org/components/toolchain/binaries/5.3-2016.05-rc2/
Previous snapshots and release-candidates are at:
http://snapshots.linaro.org/components/toolchain/binaries/
Previous releases are at:
http://releases.linaro.org/components/toolchain/binaries/
Host Requirements
==================
Linaro officially supports the current and previous Ubuntu LTS
releases (as of the time of this release). This does not mean that
the toolchain will not work on other/older Linux distributions. See
the following for the life-time of Ubuntu LTS releases.
https://wiki.ubuntu.com/Releases
The host system upon which the cross-compiler will run requires a
minimum of glibc 2.14, because of API changes to glibc's memcpy API.
https://bugs.linaro.org/show_bug.cgi?id=1869
Package Versions
=================
Linaro GCC 5.3-2016.05-rc2
Linaro glibc 2.21 (linaro/2.21)
Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch)
Linaro binutils 2.25 (linaro_binutils-2_25-branch)
FSF GDB 7.10 (gdb-7.10-branch)
Linaro toolchain package git branches are hosted at:
http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search
NEWS for Linaro GCC 5.3-2016.05-rc2
====================================
* Increment binutils release date to 2016_02 to reflect the most recent
commit:
commit ef90a4718f535cbe6345b4e7168baea7b1972abf
Author: Matthew Wahab <matthew.wahab(a)arm.com>
Date: Tue Jan 12 16:35:30 2016 +0000
[ARM] Support ARMv8.2 RAS extension.
* Baremetal sysroot names now contain 'newlib' rather than 'glibc'.
* Manifests now contain relative paths rather than absolute paths.
* Now generating proper manifest files.
* Fixed pi requeue support in glibc 2.21 while allowing the existing
2.21 minimum kernel default setting. This was checked into the
linaro/2.21/master branch.
commit a68cafa11c500d8a49a3014c43c5152859d037ae
Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org>
Date: Tue May 17 10:16:39 2016 -0300
Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463)
commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac
Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org>
Date: Mon May 16 19:01:10 2016 -0300
Remove __ASSUME_SET_ROBUST_LIST
commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8
Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org>
Date: Mon May 16 10:35:25 2016 -0300
Remove __ASSUME_FUTEX_LOCK_PI
* Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8.
* Applied fix for CVE-2015-7547 - A stack-based buffer overflow in
glibc's getaddrinfo() was corrected in glibc 2.23 and backported into
glibc 2.21.
https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html
* ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked
into GCC and binutils. It has been backported into Linaro GCC 5.3
and Linaro binutils 2.25.
* Backported -Bsymbolic-functions into Linaro binutils 2.25.
* Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC
5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02,
Linaro GCC 5.3-2016.03, and Linaro GCC 5.3-2016.04 have been included.
See the following Linaro GCC snapshots:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04
Contact Linaro
===============
File bugs at http://bugs.linaro.org
For Linaro member support see http://support.linaro.org
For Linaro community support email linaro-toolchain(a)lists.linaro.org
--
Ryan S. Arnold | Linaro Toolchain Engineering Manager
ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net
Hi Everyone,
I have a test script from help that repeatedly builds and runs a
library under different configurations. The script includes multiple
Asan tests.
The Asan tests are producing some findings under ARM32 as shown below.
Other platforms do not include Asan findings. In addition, Valgrind
does nt produce any findings.
The test program is always built with at least -g2, and sometimes
built with -g3. However, I am not seeing the symbolication. According
to the GCC folks, asan_symbolize is not required for GCC because it
uses libbacktrace. Also see
http://bugzilla.redhat.com/show_bug.cgi?id=1250844.
Why am I lacking symbolization, and how do I achieve it?
**********
AddressSanitizer: stack-buffer-overflow on address 0xbec57b18 at pc
0x38c651 bp 0xbec579e0 sp 0xbec579e4
AddressSanitizer: stack-buffer-overflow on address 0xbedbae9c at pc
0x6553f bp 0xbedbae68 sp 0xbedbae6c
AddressSanitizer: stack-buffer-overflow on address 0xbea67b18 at pc
0x38cbc5 bp 0xbea679e0 sp 0xbea679e4
AddressSanitizer: stack-buffer-overflow on address 0xbef0fe9c at pc
0x66117 bp 0xbef0fe68 sp 0xbef0fe6c
**********
$ uname -a
Linux cubietruck 3.4.39 #35 SMP PREEMPT Tue Sep 15 17:17:33 CST 2015
armv7l armv7l armv7l GNU/Linux
$ g++ --version
g++ (Ubuntu/Linaro 4.8.2-19ubuntu1) 4.8.2
Copyright (C) 2013 Free Software Foundation, Inc.
# Progress #
* TCWG-655, Workaround ARM linux kernel ptrace bug on setting VFP
registers. [2/10]
Think about different approaches to workaround the kernel bug, but
can't work unfortunately. Propose an approach that workaround it in
gdb testing by setting affinity if the kernel is known broken.
People agree on this.
* TCWG-333, Thumb mode function pointer assignment in GDB. [3/10]
It is broken when you assign a function to a function pointer in
thumb mode in GDB. My original attempt is to skip the test, because
it is difficult to do what MIPS does nowadays. After some
discussions, I realize it is a GDB bug, and we should fix it.
Fortunately it is broken on ppc64 as well because of function
descriptor :)
* TCWG-518, ARM range stepping patches. [2/10]
V3 are reviewed, but I misunderstood one comments to V2. I'll update
patches, retest and post them.
* ARM linux kernel raises SIGILL for unknown syscall number, while GDB
expects kernel returns -ENOSYS. [2/10]
The behaviour is different from other arch. The patch in GDB side is
committed, but still need to kernel people why ARM kernel behaves
this way.
* Misc [1/10]
# Plan #
* All above,
* Off on Thur and Fri.
--
Yao
