> From: Heinrich Schuchardt <[email protected]> > Date: Mon, 1 Dec 2025 18:47:03 +0100 > > We currently include libgcc.a when building for the RISC-V architecture. > For instance lib/mbedtls/external/mbedtls/library/bignum.c uses __ctzdi2(). > > At least the Ubuntu Linux distribution has switched to building libgcc.a > for the RVA23S64 profile. Using this library on RVA20 systems results in > crashes. We therefore need a private replacement library.
Sound like the real problem here is using a native toolchain instead of a toolchain for the target at hand. That said, the solution a sensible one. > With the series a private GCC library and unit tests are provided for > 64-bit RISC-V. This is enough to build for CONFIG_WGET_HTTPS as suggested > in E's patch > > [PATCH] configs: starfive: enable wget https > https://lore.kernel.org/u-boot/[email protected]/ > > Heinrich Schuchardt (2): > RISC-V: implement private GCC library > test: provide unit tests for the RISC-V private GCC library > > arch/Kconfig | 1 + > arch/riscv/lib/Makefile | 2 + > arch/riscv/lib/clz.c | 105 ++++++++++++++++++++++++++++++++++++++++ > arch/riscv/lib/ctz.c | 97 +++++++++++++++++++++++++++++++++++++ > lib/Kconfig | 2 +- > test/lib/Makefile | 4 ++ > test/lib/test_clz.c | 53 ++++++++++++++++++++ > test/lib/test_ctz.c | 53 ++++++++++++++++++++ > 8 files changed, 316 insertions(+), 1 deletion(-) > create mode 100644 arch/riscv/lib/clz.c > create mode 100644 arch/riscv/lib/ctz.c > create mode 100644 test/lib/test_clz.c > create mode 100644 test/lib/test_ctz.c > > -- > 2.51.0 > >
