[patch, arm] Add support for .init_array

[Jeff Johnston]

Nick Clifton wrote:
> Hi Paul,
> 
>> The Arm eabi requires the use of the .init_array section for running 
>> static constructors. The attached patch implements the required 
>> startup code for running these.
>>
>> Tested with cross to arm-none-eabi and arm-none-elf.
>> Ok?
> 
> 
> I am not able to approve this patch, but I do have a couple of minor 
> comments on it...
> 
>   * We are attempting to move the ARM startup code out of newlib and 
> into libgloss, so your patch to libc/sys/arm/crt0.S ought to be 
> duplicated in libgloss/arm.crt0.S
>

Yes.

>   * It is normally OK to omit a patch to auto-generated files (eg 
> newlib/configure, libc/misc/Makernel.in) and instead rely upon the 
> committer to make sure that such files are regenerated.
> 

I don't mind either way.  I regenerate the files anyway.

>   * In my opinion new source files such as libc/misc/init.c ought to 
> include a copyright notice at the start.  I know that other source files 
> in the misc/ directory do not have this, so this is just a suggestion.
>

Again, yes.  If you wrote this code yourself, please put in some form of
license.  A simple example would be:

/*
  * Copyright (C) 2004 YOURNAMEHERE
  *
  * Permission to use, copy, modify, and distribute this file
  * for any purpose is hereby granted without fee, provided that
  * the above copyright notice and this notice appears in all
  * copies.
  *
  * This file is distributed WITHOUT ANY WARRANTY; without even the implied
  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  */

If you didn't write the code, please describe where you got it from.

-- Jeff J.