etc:users:jcmvbkbc:gcc-xtensa
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Call0 ABI support in xtensa gcc backend
Compiler build for full testing
gcc testsuite requires libc, so the easiest way is the following:
- build toolchain with libc, e.g. by the buildroot
- configure and build gcc with sysroot of that toolchain:
export TOOLCHAIN=/home/jcmvbkbc/tmp/br/build-toolchain export TARGET=xtensa-buildroot-linux-uclibc # use for linux # export TARGET=xtensa-buildroot-uclinux-uclibc # use for uclinux PATH=$TOOLCHAIN/host/usr/bin:$PATH ../gcc/configure \ --prefix=`pwd`/root --target=$TARGET \ --disable-libssp --disable-libisl --enable-languages=c,c++ \ --enable-tls --enable-threads --enable-__cxa_atexit \ --with-sysroot=$TOOLCHAIN/host/usr/$TARGET/sysroot PATH=$TOOLCHAIN/host/usr/bin:$PATH make -j8 all
- run it on your board (board configuration is a file in a directory specified in the ~/.dejagnurc e.g. ~/boards):
DEJAGNU_TIMEOUT=1200 PATH=$TOOLCHAIN/host/usr/bin:$PATH \ RUNTESTFLAGS="CFLAGS_FOR_TARGET=--sysroot=$TOOLCHAIN/host/usr/$TARGET/sysroot --target_board=qemu-xtensa" \ make -k check
Use check-gcc to only check the compiler. Use check-target to check target libs. Timeouts are weird. See gcc/testsuite/lib/timeout.exp for some timeouts, the rest are TBD.
- run it on linux-user QEMU:
PATH=$TOOLCHAIN/host/usr/bin:$PATH \ QEMU_LD_PREFIX=$ROOTFS \ RUNTESTFLAGS="CFLAGS_FOR_TARGET=--sysroot=$TOOLCHAIN/host/usr/$TARGET/sysroot\ -mauto-litpools" \ make -k check
File system in \$ROOTFS should have sysroot libraries installed, but nothing else. \$TOOLCHAIN/target usually works.
- to run uclinux tests use TARGET=xtensa-buildroot-uclinux-uclibc and provide environment variable FLTFLAGS='-s 0x01000000'. -Wl,-elf2flt='-s 0x01000000' passed in CFLAGS_FOR_TARGET breaks precompiled header tests.
- to run call0 tests provide environment variable QEMU_XTENSA_ABI_CALL0='' in qemu-4.2+
Compiler build for debug
../gcc/configure \ --prefix=`pwd`/root --target=$TARGET \ --disable-libssp --disable-libisl --enable-languages=c,c++ \ --enable-debug --enable-valgrind-annotations --disable-docs \ --enable-checking=all \ CFLAGS='-O0 -g3' CXXFLAGS='-O0 -g3' make -j8 all-gcc make -j8 install-gcc
For –enable-valgrind-annotations to work valgrind must be installed.
To use ASAN add the following to configure:
../gcc/configure \ ... \ --with-stage1-libs="-lstdc++ -ldl" \ CXXFLAGS=-fsanitize=address \ LDFLAGS=-fsanitize=address \ ...
and have
ASAN_OPTIONS='detect_leaks=0'
in the environment when building.
See also
etc/users/jcmvbkbc/gcc-xtensa.1679023274.txt.gz · Last modified: 2023/03/17 06:21 by jcmvbkbc