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

[Jeff Johnston]

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.


>>
> 
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