[ECOS] How to write C code for interrupt handler

[Gary Thomas]

On Tue, 2002-06-18 at 21:41, Hiroyasu Shimizu wrote:
> This is a GCC issue not eCos.
> 
> Unfortunately, current GCC port for ARM dose not support to compile
> functions for interrupt calls as shown in H8/300 port.

It's also not necessary.  The eCos interrupt model uses three levels
of interrupt processing:
  VSR - the first [lowest] level of interrupt handling.  Typically 
        written in assembly as part of the HAL.  Normally this is
        quite platform independent.
  ISR & DSR - these are the interrupt handlers per se, normally
        written in "C" and are quite platform dependent.

Read the eCos documentation and samples for examples.  There is
almost never a reason to write the ISR/DSR code in assembly code.


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