Re: Re: Weekly Report of Porting musl to RISC-V Project #5

[Rich Felker <dalias@libc.org>]

On Thu, Dec 08, 2016 at 10:36:44PM -0200, Alan Pillay wrote:
> What is the current status of musl on RISC-V?
> This was the last time I heard about it, but it has been many months since.
> Regards.

The student (Masanori Ogino) disappeared and hasn't been in contact
since. I'd really like to follow up and see what we can salvage from
the project, as this is still a big wishlist item.

Rich


> > Hello,
> >
> > Thanks to the folks, I passed the mid-term evaluation. Now it is about
> > time to publish the fifth progress report on porting musl on RISC-V.
> >
> > Last week, the toolchain itself has been built for RISC-V and running
> > on Spike, and libc-test [1] can be executed with it now. I posted the
> > result of tests on [2]. The REPORT.txt file contains all error
> > messages of failed tests, both run-time ones and compile-time ones.
> >
> > Some failures are expected since musl on x86_64 also does the same
> > ones (e.g. errors in src/api/fcntl.c), but there are some unexpected
> > errors too. I guess that the "warning: <the name of a header> is
> > shorter than expected" warning indicates bugs in arch-dependent part
> > of I/O functions or system calls (or kernel?) and it causes syntax
> > errors in the same compilation unit.
> >
> > Moreover, some tests triggers a "signal 11" error (segmentation fault)
> > in libc. I added some logs to [2]. They are bugs in the port,
> > obviously. I am working on them.
> >
> > The good news is, anyway, some results are *better than x86_64*,
> > especially in math functions :-)
> > (probably the cause is the difference in the floating-point precision,
> > though. it is usual in float tests...)
> >
> > It takes long, long time to get but finally I have a (seems-to-be)
> > working test suite for the port. I will continue to debug and fix the
> > port using the result. Stay tuned!
> >
> >
> > [1]: http://nsz.repo.hu/git/?p=libc-test
> > [2]: https://gist.github.com/omasanori/ee828369aea844ac7fdfdc8362953299
> >
> > --
> > Masanori Ogino