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[BUG REPORT] The bare-metal toolchains for aarch64 cannot link objects successfully

by Junling Zheng

Hi, I found that the bare-metal toolchains for aarch64 from Linaro could not seem to link objects to generate executable files successfully. ==================== Toolchain: https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/aarch… ==================== Testcase: > cat test.c #include <stdio.h> int main(int argc, char* argv[]) { printf("Hello World!\n"); return 0; } > aarch64-elf-gcc -o test test.c .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/crt0.o: In function `_start': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/libgloss/aarch64/crt0.S:148: undefined reference to `initialise_monitor_handles' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-exit.o): In function `exit': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/stdlib/exit.c:70: undefined reference to `_exit' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/sbrkr.c:58: undefined reference to `_sbrk' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-writer.o): In function `_write_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/writer.c:58: undefined reference to `_write' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-closer.o): In function `_close_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/closer.c:53: undefined reference to `_close' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/lseekr.c:58: undefined reference to `_lseek' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-readr.o): In function `_read_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/readr.c:58: undefined reference to `_read' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/fstatr.c:62: undefined reference to `_fstat' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-isattyr.o): In function `_isatty_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/isattyr.c:58: undefined reference to `_isatty' collect2: error: ld returned 1 exit status In addition, there was the same bug in 7.4.1-2019.02 version, but not in arm-eabi or armeb-eabi. Is there anyone fixing this? Thanks, Junling

6 years, 11 months

[ACTIVITY] 28 January 2019 - February 1 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (6/10) - svlsl * Validation (2/10) - Upstream monitoring job based on round-robin - LLVM Buildbot babysitting * PR88839: Poor implementation of blend like permutes (1/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 11 months

[ACTIVITY] Week 05

by Yvan Roux

o Still part time at university. o LLVM * Working on machine outliner RFC comments. o Misc * Various meetings and discussions.

6 years, 11 months

[ACTIVITY] 28 January-1 February 2019

by Kugan Vivekanandarajah

== Progress == * Short week - Annual Leave 2 days - Public Holiday 1 day (Australia day) *SVE ACLE - Revised remaining ACLE patches - svbic revised and reviewed * Auto Vectorizer - Looking at auto vectorisation SVE == Plan == * SVE ACLE * Look at PR88834

6 years, 11 months

[ACTIVITY] week ending 3 Feb 2019

by Richard Henderson

[VIRT-294 # ARMv8.3-PAuth, Pointer Authentication ] Fixed HCR/SCR enablement of API/APK. Posted v2 of the prctl. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted v2. [VIRT-327 # Richard's upstream QEMU work ] Implemented variable-length decoding in scripts/decodetree.py. Lots of fiddling about with the RX ISA to understand what was actually needed within decodetree. Pull request for vector extensions and dynamic tlb sizing. Finished MPS review. r~

6 years, 11 months

[ACTIVITY] week ending Feb. 3 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests - posted userspace CPUID access patches Message-Id: <20190128173940.25813-1-alex.bennee(a)linaro.org> - spent some time debugging PAuth kernel boot regression - rth posted a fix for the regression Message-Id: <20190129143511.12311-1-richard.henderson(a)linaro.org> Other Tasks =========== - rebuilt Zen after the /home SSD failed - fortunately the backup drive had all the work in progress source code - moved to Debian Buster while I'm at it - need to regenerate my images and foundation/FVP setup - and realise quite how many tweaks I had baked into the old system Completed Reviews [2/2] ======================= {Qemu-devel} {PATCH 00/11} Enable build and install of our rST docs Message-Id: <20190201145035.22739-1-peter.maydell(a)linaro.org> {RFC PATCH 0/3} lm32: convert to new common tcg infrastructure Message-Id: <20190131215611.29341-1-michael(a)walle.cc> Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH v2 00/18} OpenBSD: Enable qtesting Message-Id: <20190129175403.18017-1-philmd(a)redhat.com> * {PATCH v11 00/25} Fixing record/replay and adding reverse debugging Message-Id: <20190131131520.23264.75724.stgit@pasha-VirtualBox> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH v3 0/4} tcg: support heterogenous CPU clusters Message-Id: <20190121152218.9592-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH RFC 00/11} Add Renesas RX archtecture Message-Id: <20190121131602.55003-1-ysato(a)users.sourceforge.jp> -- Alex Bennée

6 years, 11 months

[ACTIVITY] report week ending 1 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + got the "use Sphinx for documentation" patchset to a point where I think we could plausibly commit it to master; sent out for review + two arm pull requests + sent patches fixing decode errors for FCMLA * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + AN521 model is now in upstream QEMU thanks -- PMM

6 years, 11 months

[ACTIVITY] 28 January-1 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1: switched to it this week * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. - minor testsuite fixes * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Infra: - benchmarking jobs

6 years, 11 months

[ACTIVITY] 28 January - 1 February 2019

by Diana Picus

== Progress == * Out of office on Friday * [Thumb GlobalISel] Support divisions [LLVM-516] - Committed upstream * [Thumb GlobalISel] Support G_GEP [LLVM-532] - Ready to commit next week * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - Posted binaries for rc1 - Created a bug report for a MSan failure on AArch64 * Use new version of GCC on buildbots [LLVM-515] - Ready to use in production == Plan == * More GlobalISel * Patch up the Jenkins release job [LLVM-533]

6 years, 11 months

[ACTIVITY] 21-25 January 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1: plan to switch to it this week * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. - minor testsuite fixes * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - experimenting with new build servers - started looking at new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk

6 years, 12 months

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