[ECOS] Arm user mode

[Mark Salter]

>>>>> Jonathan Larmour writes:

> Pierre Habraken wrote:
>> I discovered yesterday that Arm user mode has not been considered in
>> exception processing in hal/arm/arch/current/src/vectors.S.
>> Can someone tell me what has been the reason for that (apart the fact
>> that most of embedded applications do not need to run user mode
>> tasks) ?

> I actually thought this did work, because newlib-based applications 
> required it, but I might be wrong. I thought Mark Salter added this 
> support last year. Mark, any comments?

Not quite. I added support for exceptions in non-svc modes other than
user mode. I wanted to debug interrupt handlers.

--Mark

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