On Fri, 26 Oct 2018 at 19:54, Max Filippov <jcmvb...@gmail.com> wrote: > > On Fri, Oct 26, 2018 at 6:51 AM Christophe Lyon > <christophe.l...@linaro.org> wrote: > > On Sun, 21 Oct 2018 at 04:06, Max Filippov <jcmvb...@gmail.com> wrote: > > > Probably the easiest way to get all xtensa toolchain parts correctly it > > > by using existing buildroot configuration. E.g. the following > > > configuration > > > may be used to build uclinux xtensa toolchain for the dc233c core: > > > https://git.buildroot.net/buildroot/tree/configs/qemu_xtensa_lx60_nommu_defconfig > > > > > OK, thanks for your suggestion. I think I managed to build it. > > Now, how/where can I run 'make check' for gcc? > > I do not see the GCC build tree. > > The gcc build tree is usually in the build/host-gcc-final in the buildroot > build tree. But that's gcc version selected in the buildroot, you probably > want a different version. Usually after the buildroot toolchain is ready I > build gcc separately using binutils and sysroot produced by the buildroot. > I have a few examples here: > > http://wiki.osll.ru/doku.php/etc:users:jcmvbkbc:gcc-xtensa-call0 > > Please note that you'd need to apply gcc part of the xtensa overlay to > your gcc source for it to correctly generate code for that configuration. > > I've run the tests with the current gcc trunk and a lot of execution > tests related to TLS (which is expected) and exceptions (which I > didn't expect) are failing. I'm looking at it. >
I'm not sure if I followed the instructions correctly: make qemu_xtensa_lx60_nommu_defconfig make all which built: ./output/host/bin/xtensa-buildroot-uclinux-uclibc-gcc (which is 7.3) then I tried to follow the wiki above: export TOOLCHAIN=$PWD/output PATH=$TOOLCHAIN/host/bin:$PATH ..../gcc/configure [...] I also built qemu from the branch you mentioned, and used the "run it on linux-user QEMU" section in the wiki I see many execution errors, now realizing that I didn't do what you said above: "apply gcc part of the xtensa overlay". But what is this? Do you mean the patches in buildroot/packages/gcc/8.2.0 ? I tried to apply 0004-gcc-xtensa-fix-NAND-code-in-xtensa_expand_atomic.patch but patch says it's already applied (I'm using GCC trunk) And while writing this reply, I'm just realizing that buildroot builds for uclinux-uclibc-gcc, while the wiki uses linux-uclibc :( Does the wiki need an update wrt target name? > > > Also bFLT executable format is currently not supported for linux-user > > > xtensa QEMU. The following branch adds that support: > > > https://github.com/OSLL/qemu-xtensa/commits/xtensa-bflt > > > > > > qemu-xtensa built from this QEMU then may be registered as a binfmt > > > handler for bFLT executable images allowing to run gcc tests that want > > > to run target binaries. > > Do you have the magic commands for this? > > If you build QEMU from the link above you can use the following command > to register binfmt handler for bFLT binaries assuming that you've installed > it into $QEMU_PREFIX: > > sudo scripts/qemu-binfmt-conf.sh --qemu-path=$QEMU_PREFIX/bin --flat > 'xtensa' > > The --flat switch is not final, it will likely change before it's accepted to > the QEMU mainline. > -- > Thanks. > -- Max
