4.9. Wait for Interrupt and Wait for Event

The WFI and WFE instructions are not waypoint instructions, and entering a Wait for Interrupt (WFI) or Wait for Event (WFE) state is not traced as a waypoint.

However, when the processor commits a WFI or WFE instruction for execution:

Entering a WFI or WFE state does not stop tracing. However, normally these states stop the processor, meaning no more trace is generated.

If tracing is off when the processor enters a WFI or WFE state, trace cannot be enabled until the processor has left the WFI or WFE state.

If PTM power is removed, execution from the previous waypoint to the WFI or WFE instruction is not traced.

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