[PATCH] Add support for Altera's Nios-II softcore architecture

[Dmitry V. Levin]

On Sat, Apr 18, 2015 at 05:46:19PM -0300, Ezequiel Garcia wrote:
> On 04/18/2015 05:33 PM, Ezequiel Garcia wrote:
> > This commit adds strace support for Altera's Nios-II. The architecture
> > is supported by Linux since v3.19, and it implements the generic syscall ABI.
> > 
> > * Makefile.am, configure.ac: add nios2 files and support
> > * cacheflush.c: support nios2 cacheflush syscall
> > * linux/nios2/: arch-specific port
> > 
> > Signed-off-by: Ezequiel Garcia <ezequiel at vanguardiasur.com.ar>
> > ---
> >  Makefile.am                    |  8 ++++++++
> >  cacheflush.c                   | 12 ++++++++++++
> >  configure.ac                   |  5 +++++
> >  linux/nios2/arch_regs.c        |  2 ++
> >  linux/nios2/get_error.c        | 14 ++++++++++++++
> >  linux/nios2/get_scno.c         |  1 +
> >  linux/nios2/get_syscall_args.c |  6 ++++++
> >  linux/nios2/ioctls_arch0.h     |  1 +
> >  linux/nios2/ioctls_inc0.h      |  1 +
> >  linux/nios2/print_pc.c         |  1 +
> >  linux/nios2/syscallent.h       |  4 ++++
> >  11 files changed, 55 insertions(+)
> 
> BTW, forgot to version this correctly. Current patch
> is v4. For those interested, here's a link to the previous
> version:
> 
>   http://marc.info/?l=strace&m=139170929111223&w=2
> 
> This v4 patch had to be completely re-written, for two reasons.
> First, the Nios-II Linux port landed in mainline and now uses the
> generic syscall ABI. And also, strace arch-specific code was re-organized.
> 
> The diffstat speaks for itself about the advantages of using the generic
> syscall ABI and the impact of the strace cleanup (consider v3 had roughly
> 500 insertions!).

That's nice.

> Finally, here's a tiny example of strace running Nios-II:
> 
> # strace ls
> execve("/bin/ls", ["ls"], [/* 16 vars */]) = 0

Does it pass "make check" tests?


-- 
ldv
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