Re: [PATCH 0/9] RISC-V glibc port for the 32 bit

[Jim Wilson <jimw at sifive dot com>]

On 07/12/2018 03:26 AM, Zong Li wrote:
> This patch set contains the glibc port for the 32 bit RISC-V. I ran the glibc
> test suite on QEMU, and remained the failed cases which caused by environment
> issue like 64 bit glibc port. In addition, there are some math test cases
> need to be checked but it look unlike glibc's problem now.

There is an issue with the stat structure that should be resolved before 
the 32-bit RISC-V port is upstreamed.  I'm seeing failures with github 
riscv/riscv-gnu-toolchain when building a riscv32-linux toolchain and 
using a user-mode qemu for testing.  There is some discussion here
    https://github.com/riscv/riscv-gnu-toolchain/pull/325
and here
    https://github.com/riscv/riscv-qemu/issues/135

The latter one suggests that we should first fix the 32-bit RISC-V linux 
port to add
    #define __ARCH_WANT_STAT64
to arch/include/riscv/asm/unistd.h, and then modify qemu, glibc, and 
musl appropriately to match the kernel.

I don't have a riscv32-linux system I can boot, so I can't easily look 
at this problem.

Jim