[PATCH] score: Add CPU_Exception_frame

[Sebastian Huber]

This usage of the error code leads to problems on a 64-bit target since 
sizeof(void *) >= sizeof(uint32_t) (= type of error code).  Maybe we should use 
an integer type like uintptr_t for the error code which is at least 32-bit wide.

-- 
Sebastian Huber, embedded brains GmbH

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