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

[Ezequiel Garcia]

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?

(Or maybe someone with NFSroot can give it a shot)
-- 
Ezequiel Garcia, VanguardiaSur
www.vanguardiasur.com.ar

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