[ECOS] eCos interrupt handling

[Wilson Tsao <Wilson dot Tsao at iteusa dot com>]

Hi,

I am porting eCos to my company's own platform. We are using MIPS 4KEp as
our processor.
I modified some of the HAL files to fit our processor. But I found some
problems regrading the interuupt
handling. Very likely the problems are caused by my modifications.

In my interrupt DSR, it writes mailbox to wake up a thread which is waiting
for mailbox event. But I saw
the thread is waken up and running while HAL default interrupt VSR is not
returned yet (eret is not called yet).
I thought the scheduler should decide which thread to run after the whole
interrupt is completed, includes
HAL default VSR, ISR, DSR, and restore_state. Can someone give me some
directions what could go wrong?

Thanks a lot,

Wilson

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