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The program flow prediction is enabled by setting the Z bit in the CP15 System Control Register to 1. See System Control Register for more information.
Reset:
Disables program flow prediction.
Invalidates the BTB.
Resets the GHB and indirect predictor to a known state.
No software intervention is required to prepare the prediction logic before enabling program flow prediction.
| Copyright © 2011-2012 ARM. All rights reserved. | ARM DDI 0438G |
| Non-Confidential | ID080412 |
| PDF version | |
| Home > Level 1 Memory System > Program flow prediction > Enabling program flow prediction |