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

[Dmitry V. Levin]

On Sun, Apr 19, 2015 at 03:36:31PM -0300, Ezequiel Garcia wrote:
> On 04/18/2015 06:56 PM, Dmitry V. Levin wrote:
> > 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?
> 
> Hm... I have a very limited test platform here.
> 
> Can only boot limited size initramfs. I could try to fix my bootloader
> to allow bigger initramfs, but this might take a lot of time.
> 
> Am I required to run 'make check' to merge this?

No, this is not a strict requirement, but how do you know
that the new port works well?


-- 
ldv
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 181 bytes
Desc: not available
URL: <http://lists.strace.io/pipermail/strace-devel/attachments/20150421/493a443f/attachment.bin>