strsignal.c implementation

[Jeff Johnston]

On 05/11/2010 12:24 PM, Joel Sherrill wrote:
> On 05/11/2010 10:49 AM, Jeff Johnston wrote:
>> On 05/11/2010 09:26 AM, Joel Sherrill wrote:
>>> Hi,
>>>
>>> I have implemented strsignal.c for RTEMS but
>>> wondered if it was worth trying to make the
>>> implementation match the ifdef's in sys/signal.h
>>> and support other targets?
>>>
>>> I have attached the current implementation. I
>>> see two approaches to making it support all
>>> the targets:
>>>
>>> + ifdefs in the table to match the numbers in
>>> sys/signal.h.
>>> + a long series of code something like this:
>>> #ifdef SIGXXX
>>> if ( signal == SIGXXX )
>>> return "string for SIGXXX";
>>> #endif
>>>
>>> Any thoughts or comments?
>>>
>> Yes, IMO it is worth it to make it a shared implementation. Option 2 is
>> what is used in libc/string/strerror.c for the errno strings.
>>
> How about the attached version? I went through the list of
> signals and added everyone in sys/signal.h. When the values
> could be the same, I added a little extra conditional magic
> to see if both were defined and the same to avoid
> duplicate case errors.
>

Looks good.  Any chance you could add some documentation to it to save 
me the trouble?  It does not have to be as detailed as strerror.c.

Thanks,

-- Jeff J.

>
> 2010-05-11 Joel Sherrill <joel.sherrill@oarcorp.com>
>
> * libc/string/strsignal.c: New file.
>
>> -- Jeff J.
>
>