linaro-toolchain

linaro-toolchain@lists.linaro.org

7 participants
5634 discussions

by Kugan

== Progress == * spec2k comparison between ARM and x86 - Read papers/documents that list gcc optimization/problem for arm - Acovea runs fails in Chromebook; Looking into it - continuing with analysing individual results * VRP based zero/sign extension elimination - Final checks ongoing before posting the patch == Plan == * Continue with spec2k comparison between ARM and x86 * post VRP based zero/sign extension elimination patch == Misc == * Was on Leave Thursday/Friday (3 Day week) * Watched Cauldron 2013 archives

12 years, 1 month

[ACTIVITY] Week 32

by Will Newton

== Progress == * Lots more malloc work, slowly progressing * Created a patch queue in preparation for glibc coming out of freeze * New strlen code * Other bugfixes and minor improvements == Issues == * None == Plan == * Move house (Wednesday and Thursday off) * Submit glibc patches * Get malloc implementation functionally complete -- Will Newton Toolchain Working Group, Linaro

12 years, 1 month

[ACTIVITY] report week 32

by Peter Maydell

Progress: * v7 mach-virt upstreaming: ** sent out mach-virt patchset for v7 ** thinking/discussions about how to handle the host maybe not being able to provide a guest CPU; this has converged on a sensible design based around using "-cpu host" to mean "please give me a VCPU that's the same as the host's CPU" ** review of the OVS v2 aarch64-kvm-support patchset * QEMU maintenance: ** rebased qemu-linaro on upstream master ** fixed some minor bugs revealed by clang warnings ** wrote and sent out a cleanup patchset which removes the now unnecessary 'arm_pic' shim around the CPU ** implemented debug logging of exceptions/interrupts for ARM TCG (helpful for identifying when a guest has gone into an infinite loop of taking exceptions) -- PMM

12 years, 1 month

[Activity] June 4-8

by Rob Savoye

== Progress == * Cbuildv2 can now do a full cross toolchain build ala crosstool-ng. * Cbuildv2 integrated to work under LAVA team's Jenkins for automated cross builds. * Cbuildv2 now allows one to select the version of each toolchain component. == Plans == * Add support to Cbuildv2 to run 'make check' and create XML files for MySQL and Junit (which Jenkins uses). * Add newlib building support to Cbuildv2 as part of "--build all". == Leave == * Off to climb Grand Teton in Wyoming, taking long weekend. - rob -

12 years, 1 month

[PATCH] omap_i2c: don't end I2C transfer immediately when STP bit is set

by Francesco Lavra

When the OMAP I2C controller is operated in master mode, setting the STP bit in the CON register instructs the controller to generate an I2C stop condition only after the programmed number of bytes has been sent on the I2C bus. The current code in QEMU ends the I2C transfer without first sending the pending data instead. Fix the above issue, and let the I2C transfer be ended in omap_i2c_fifo_run(), after the count of bytes to send has reached zero. Signed-off-by: Francesco Lavra <francescolavra.fl(a)gmail.com> --- Without this patch, the controller driver in Linux is unable to send data on the I2C bus, and when the controller triggers an IRQ after having started an I2C transfer, the XRDY flag in the STAT register remains always asserted, leading to an endless loop which eventually results in a kernel oops. hw/i2c/omap_i2c.c | 4 ---- 1 files changed, 0 insertions(+), 4 deletions(-) diff --git a/hw/i2c/omap_i2c.c b/hw/i2c/omap_i2c.c index cfaac07..17d4037 100644 --- a/hw/i2c/omap_i2c.c +++ b/hw/i2c/omap_i2c.c @@ -521,10 +521,6 @@ static void omap_i2c_write(void *opaque, hwaddr addr, omap_i2c_fifo_run(s); } omap_i2c_interrupts_update(s); - } else if (value & 2) { /* STP, but not STT */ - i2c_end_transfer(s->bus); - s->control &= ~0x0602; /* MST | TRX | STP */ - s->count_cur = s->count; } } break; -- 1.7.5.4

12 years, 1 month

[ACTIVITY] Week 31

by Charles Baylis

Last week * Wrote up notes on gcc cross-compiler building (WIP: https://wiki.linaro.org/WorkingGroups/ToolChain/BuildingGNUToolchains) * started looking at gcc test suite This week * produce at least one fix for a gcc testsuite test problem * book LCU13 * with luck, receive new laptop

12 years, 1 month

[ACTIVITY] July 29 - Aug 2

by Christophe Lyon

== Progress == * 2013-08 4.8 release: - Reviewed merge requests sent by Yvan. A few instabilities in x86/x86_64: re-spawned jobs came back clean. Unexpected improvements in a9: actually the reference had unexpected regression; re-spawned reference job came back clean. - prepared another series of backports; had to dig history to find missing dependencies. == Plan == * 2013.08 4.8 release: - merge approved backports - merge fsf-4.8 branch * 2013.08 4.7 release: - merge fsf-4.7 branch * Resume work on aarch64 frame layout. * Resume work on disabling peeling.

12 years, 1 month

[ACTIVITY] 29 July - 2 August 2013

by Omair Javaid

== Progress == * Generated arm syscall xml file for gdb and made few code changes in arm-linux-tdep for catch syscall support on arm TCWG-182. * Ran reverse debugging test suites on arm with arm/thumb and mix mode. == Plan == * Short week due to EID holidays * Try to Complete code changes and perform testing on arm/x86 for gdb catch syscall support for arm TCWG-182.

12 years, 1 month

[ACTIVITY] 29 July - 01 August 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: Basic support is enabled by default when frame is made to grow downwards. Wrote machine descriptions for stack_protect_set and stack_protect_test to override this default behavior. Testing the patch internally. Plan is to emit instructions as RTL instead of template and see which approach is better. * Look at builtin return address behavior in the absence of frame pointer: For X86_64 usage if __builtin_return_address(n) n>0 and -fomit-frame-pointer results in undefined behavior. Discussed with Marcus and Andrew (mail chain) and decided not to touch __builtin_return_address(n) where n>0. Decided to leave it as return 0 for frame number other than current frame. * TCWG-20 gprof support patches. Re-implemented gprof patches without builtin_return_address usage for frame number n >0. The "mcount" in glibc needs two arguments. The "mcount" routine will be emitted by GCC with an argument to previous frame return address. And in the glibc "mcount" routine will be modified to use builtin_return_address(0) for the second argument. http://gcc.gnu.org/ml/gcc-patches/2013-08/msg00148.html Waiting for comments. Matt suggested to try and return a label address inside the function while generating mcount. But profiling code is expanded before any local labels are generated. Also need to research more on this approach. So stopped and decided to use simpler approach. == Plan == * Continue Libssp support for AArch64 TCWG-23 * Update review comments and upstream gprof patches ==issues== * LTO/PGO work stopped now since libssp support priority is more Misc ------ 09-August Public holiday in India.

12 years, 1 month

[ACTIVITY] July 26 - Aug 4

by Rob Savoye

== Progress == * Worked on integrating Cbuildv2 with Jenkins, an automated build system used by the LAVA team. - Uses cbuildv2 to fetch, configure, build, and install a C toolchain cross or native build. * Wrote a script to convert DejaGnu sum files into Junit format, which can be imported into Jenkins for viewing. Initial test is online at: https://ci.linaro.org/jenkins/view/toolchain/job/junit-parsing/. A work in progress, and Jenkins is a bit limited in the allowed test results. * Did expense reports for Connect - Cauldron trip. == Plans == * Refactor how cbuildv2 dependencies for packages are handled so they work more than one level deep. * Have cbuildv2 build C++ after eglibc. * More Jenkins integration. * Work on wiki pages. - rob -

12 years, 1 month

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