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Re: glibc for 32-bit kernel without __ARCH_WANT_TIME32_SYSCALLS
- From: Florian Weimer <fweimer at redhat dot com>
- To: Alistair Francis <alistair23 at gmail dot com>
- Cc: libc-alpha at sourceware dot org
- Date: Fri, 21 Jun 2019 11:34:18 +0200
- Subject: Re: glibc for 32-bit kernel without __ARCH_WANT_TIME32_SYSCALLS
- References: <CAKmqyKOK2x=+_AVn48Suxbm66DMc3+DYPEEQQUgRr0k86C-AOg@mail.gmail.com>
* Alistair Francis:
> Linux 5.1 has removed the __ARCH_WANT_TIME32_SYSCALLS define for the
> RISC-V 32-bit port. This means that glibc (with the latest 32-bit
> RISC-V port submission) fails to build as there are a lot of missing
> syscalls, __NR_futex is the first one I see.
>
> I looked at adjusting the syscalls to use the new 64-bit versions
> (such as __NR_futex64) but this seems to be a large job with a lot of
> manual changes. Is there a better way that I should be doing this?
> Have any other 32-bit architectures removed
> __ARCH_WANT_TIME32_SYSCALLS or are in the process of removing
> __ARCH_WANT_TIME32_SYSCALLS?
Maybe look at the x86-64 x32 port? It may make sense to align with that
and pretend that the time-related system calls are always 64-bit on the
32-bit RISC-V port.
Thanks,
Florian