PATCH: ARMV7M support

[Jeff Johnston]

Mark Mitchell wrote:
> Shaun Jackman wrote:
> 
> 
>>Can you seperate the bare-metal and dependency (_exit and stdio)
>>component from the ARMv7M componenet of the patch? Non-ARMv7M targets
>>also benefit from your bare-metal/dependency work. I found the patch
>>difficult to read with the two matters mixed.
> 
> 
> The dependency work (_exit.c, avoiding initialise_monitor_handles) is
> actually already independent of ARM V7M; those changes apply to all ARM
> configurations.  I could break the patch apart to make that more
> obvious, if necessary.
> 
> However, you are correct that non-ARMV7M targets could benefit from the
> option not to make semihosting calls in crt0.o.  I can easily add a
> separate #ifdef for that.
> 

You might as well make this change when you resubmit for Shaun.

> (If acceptance of this patch is contingent on converting newlib to use
> libgloss for ARM, I may not get to it very quickly.  It's not that I
> don't agree that it's a good thing to do; it's just that I don't have
> time to do it right now.  I will still get to it, but not for a week or
> two.  This isn't meant to pressure for acceptance, it's just FYI.)
> 

No, it is not contingent, but I trust you will do your best to get 
around to it; otherwise I have to do it.  I'll look at why the sources 
aren't currently in sync regarding changes that apply to both.

> Thanks,
>