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12.3.1
Branch status signal
ARM DDI 0337G
Unrestricted Access
HPROTI[0] indicates what is being fetched:
•
0 - instruction fetch
•
1 - vector fetch.
All ICode transactions are performed as non-sequentials.
A branch status signal, BRCHSTAT, is exported on the Embedded Trace Macrocell
(ETM) interface that indicates if there are any branches in the pipeline. A prefetcher, for
example, can use this to prevent prefetching if a branch is about to be fetched. For more
information about the branch status signal, see Chapter 15 Embedded Trace Macrocell
Interface.
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Bus Interface
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