diff options
Diffstat (limited to 'src/sim/sim_object.hh')
| -rw-r--r-- | src/sim/sim_object.hh | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/sim/sim_object.hh b/src/sim/sim_object.hh index 16237d051..17714740b 100644 --- a/src/sim/sim_object.hh +++ b/src/sim/sim_object.hh @@ -1,4 +1,16 @@ /* + * Copyright (c) 2015 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) 2001-2005 The Regents of The University of Michigan * Copyright (c) 2010 Advanced Micro Devices, Inc. * All rights reserved. @@ -175,6 +187,28 @@ class SimObject : public EventManager, public Serializable, public Drainable */ unsigned int drain(DrainManager *drainManger); + /** + * Write back dirty buffers to memory using functional writes. + * + * After returning, an object implementing this method should have + * written all its dirty data back to memory. This method is + * typically used to prepare a system with caches for + * checkpointing. + */ + virtual void memWriteback() {}; + + /** + * Invalidate the contents of memory buffers. + * + * When the switching to hardware virtualized CPU models, we need + * to make sure that we don't have any cached state in the system + * that might become stale when we return. This method is used to + * flush all such state back to main memory. + * + * @warn This does <i>not</i> cause any dirty state to be written + * back to memory. + */ + virtual void memInvalidate() {}; void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE {}; void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE {}; |