cbf530c338
Make the tag variable private, so that every access to it must pass through a getter and a setter. This protects it from being incorrectly updated when there is no direct match between a tag and a data entry, as is the case of sector, compressed, decoupled, and many other table layouts. As a side effect, a block matching function has been created, which also depends directly on the mapping between tag and data entries. Change-Id: I848a154404feb5cbcea8d0fd2509bf49e1d73bd0 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34955 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2012-2013 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) 2020 Inria
|
|
* Copyright (c) 2007 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "mem/cache/cache_blk.hh"
|
|
|
|
#include "base/cprintf.hh"
|
|
|
|
bool
|
|
CacheBlk::matchTag(Addr tag, bool is_secure) const
|
|
{
|
|
return isValid() && (getTag() == tag) && (isSecure() == is_secure);
|
|
}
|
|
|
|
void
|
|
CacheBlk::insert(const Addr tag, const bool is_secure,
|
|
const int src_requestor_ID, const uint32_t task_ID)
|
|
{
|
|
// Make sure that the block has been properly invalidated
|
|
assert(status == 0);
|
|
|
|
// Set block tag
|
|
setTag(tag);
|
|
|
|
// Set source requestor ID
|
|
srcRequestorId = src_requestor_ID;
|
|
|
|
// Set task ID
|
|
task_id = task_ID;
|
|
|
|
// Set insertion tick as current tick
|
|
tickInserted = curTick();
|
|
|
|
// Insertion counts as a reference to the block
|
|
refCount = 1;
|
|
|
|
// Set secure state
|
|
if (is_secure) {
|
|
setSecure();
|
|
}
|
|
|
|
// Validate block
|
|
setValid();
|
|
}
|
|
|
|
void
|
|
CacheBlkPrintWrapper::print(std::ostream &os, int verbosity,
|
|
const std::string &prefix) const
|
|
{
|
|
ccprintf(os, "%sblk %c%c%c%c\n", prefix,
|
|
blk->isValid() ? 'V' : '-',
|
|
blk->isWritable() ? 'E' : '-',
|
|
blk->isDirty() ? 'M' : '-',
|
|
blk->isSecure() ? 'S' : '-');
|
|
}
|
|
|