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Diffstat (limited to 'src/cpu/pred/2bit_local.hh')
| -rw-r--r-- | src/cpu/pred/2bit_local.hh | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/cpu/pred/2bit_local.hh b/src/cpu/pred/2bit_local.hh index 8b7bb8463..01a0b64db 100644 --- a/src/cpu/pred/2bit_local.hh +++ b/src/cpu/pred/2bit_local.hh @@ -1,4 +1,16 @@ /* + * Copyright (c) 2011 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * * Copyright (c) 2004-2006 The Regents of The University of Michigan * All rights reserved. * @@ -65,6 +77,15 @@ class LocalBP bool lookup(Addr &branch_addr, void * &bp_history); /** + * Updates the branch predictor to Not Taken if a BTB entry is + * invalid or not found. + * @param branch_addr The address of the branch to look up. + * @param bp_history Pointer to any bp history state. + * @return Whether or not the branch is taken. + */ + void BTBUpdate(Addr &branch_addr, void * &bp_history); + + /** * Updates the branch predictor with the actual result of a branch. * @param branch_addr The address of the branch to update. * @param taken Whether or not the branch was taken. |