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

[Toralf Lund]

Jeff Johnston wrote:

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

I almost forgot to tell you, I got one problem when applying 
arm-libgloss.patch: libgloss/arm/trap.S would not be created, apparently 
due to missing end-of-file in the patch. The file does appear to exist 
in current CVS, though, so I guess everything is OK.

Also, my application seems to work fine when built with the updated lib.

>
> -- 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.
>>
>>
>>>>
>>>
>


-- 
Toralf Lund <toralf@procaptura.com> +47 66 85 51 22
ProCaptura AS                       +47 66 85 51 00 (switchboard)
http://www.procaptura.com/~toralf   +47 66 85 51 01 (fax)