Patch: Extended libgloss support for ARM, replacing libc/sys/arm

[Jeff Johnston]

Amended patch has been checked in.  Torald, if you have problems with it, just 
let me know.

-- Jeff J.

Jeff Johnston wrote:
> Jeff Johnston wrote:
> 
>> Toralf Lund wrote:
>>
>>> Hello again,
>>>
>>> I just tried to submit a patch via the mailing list. Unfortunately, 
>>> the message got so large that the list software wouldn't accept it, 
>>> so I've now uploaded the file to our FTP server instead. See:
>>>
>>> ftp://ftp.procaptura.com/pub/newlib-libglossARM.patch
>>>
>>>
>>> Original text:
>>>
>>> Hi.
>>>
>>> Here is (the first version of) a patch that will make some changes to
>>> the ARM setup that were discussed on this list some time back. It will:
>>>
>>>    1. Remove newlib/libc/sys/arm
>>>    2. Add support files for RDI, RDP and "bare"/"nomon" system to
>>>       libgloss/arm, based on the above.
>>>    3. Set up libgloss/arm to build separate start files for nomon, RDI
>>>       and RDP, and "BSP" libs for the latter two.
>>>    4. Extend nomon crt0 so that it will set up stack for all execution
>>>       modes, based on address value that may be specified externally,
>>>       and call "init hooks" when present.
>>>
>>> Comments are welcome. Note that as I haven't been able to test the RDI
>>> and RDP code a lot, since I don't have boards with those debug monitors.
>>>
>>> - Toralf
>>>
>>
>> Toralf,
>>
>>   I noticed when I applied the patch that you left a few references to 
>> sys_dir=arm for the ep9312 and a few others.  I have changed these and 
>> also changed libgloss to recognize the ep9312.  I am currently 
>> building with the patch applied.
>>
>> -- Jeff J.
>>
> 
> After some discussion with an ARM maintainer, I have decided to alter 
> the patch further to avoid extensive breakage of existing build 
> processes.  Instead of deleting libc/sys/arm I have decided to leave it 
> up to the existing --disable-newlib-supplied-syscalls option to remove 
> it.  This will mean that the default will still be the current 
> behavior.  There will be a new machine/arm directory and there will be 
> the new libgloss files being built.  If the 
> --disable-newlib-supplied-syscalls configure option is used, the sys/arm 
> directory will not be built.
> 
> Torald, could you try out the attached patches to ensure your tests 
> continue to work as expected (with the 
> --disable-newlib-suppplied-syscalls option specified of course).
> 
> -- Jeff J.
> 
> 
>>>
>>