| /* |
| * Copyright (c) 2020,2021 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) 2012-15 Advanced Micro Devices, Inc. |
| * 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. |
| */ |
| |
| #ifndef __MEM_RUBY_COMMON_WRITEMASK_HH__ |
| #define __MEM_RUBY_COMMON_WRITEMASK_HH__ |
| |
| #include <cassert> |
| #include <iomanip> |
| #include <iostream> |
| #include <vector> |
| |
| #include "base/amo.hh" |
| #include "mem/ruby/common/DataBlock.hh" |
| #include "mem/ruby/common/TypeDefines.hh" |
| |
| namespace gem5 |
| { |
| |
| namespace ruby |
| { |
| |
| class WriteMask |
| { |
| public: |
| typedef std::vector<std::pair<int, AtomicOpFunctor* >> AtomicOpVector; |
| |
| WriteMask(); |
| |
| WriteMask(int size) |
| : mSize(size), mMask(size, false), mAtomic(false) |
| {} |
| |
| WriteMask(int size, std::vector<bool> & mask) |
| : mSize(size), mMask(mask), mAtomic(false) |
| {} |
| |
| WriteMask(int size, std::vector<bool> &mask, AtomicOpVector atomicOp) |
| : mSize(size), mMask(mask), mAtomic(true), mAtomicOp(atomicOp) |
| {} |
| |
| ~WriteMask() |
| {} |
| |
| void |
| clear() |
| { |
| mMask = std::vector<bool>(mSize, false); |
| } |
| |
| bool |
| test(int offset) const |
| { |
| assert(offset < mSize); |
| return mMask[offset]; |
| } |
| |
| void |
| setMask(int offset, int len, bool val = true) |
| { |
| assert(mSize >= (offset + len)); |
| for (int i = 0; i < len; i++) { |
| mMask[offset + i] = val; |
| } |
| } |
| void |
| fillMask() |
| { |
| for (int i = 0; i < mSize; i++) { |
| mMask[i] = true; |
| } |
| } |
| |
| bool |
| getMask(int offset, int len) const |
| { |
| bool tmp = true; |
| assert(mSize >= (offset + len)); |
| for (int i = 0; i < len; i++) { |
| tmp = tmp & mMask.at(offset + i); |
| } |
| return tmp; |
| } |
| |
| bool |
| isOverlap(const WriteMask &readMask) const |
| { |
| bool tmp = false; |
| assert(mSize == readMask.mSize); |
| for (int i = 0; i < mSize; i++) { |
| if (readMask.mMask.at(i)) { |
| tmp = tmp | mMask.at(i); |
| } |
| } |
| return tmp; |
| } |
| |
| bool |
| containsMask(const WriteMask &readMask) const |
| { |
| bool tmp = true; |
| assert(mSize == readMask.mSize); |
| for (int i = 0; i < mSize; i++) { |
| if (readMask.mMask.at(i)) { |
| tmp = tmp & mMask.at(i); |
| } |
| } |
| return tmp; |
| } |
| |
| bool isEmpty() const |
| { |
| for (int i = 0; i < mSize; i++) { |
| if (mMask.at(i)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool |
| isFull() const |
| { |
| for (int i = 0; i < mSize; i++) { |
| if (!mMask.at(i)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void |
| andMask(const WriteMask & writeMask) |
| { |
| assert(mSize == writeMask.mSize); |
| for (int i = 0; i < mSize; i++) { |
| mMask[i] = (mMask.at(i)) & (writeMask.mMask.at(i)); |
| } |
| |
| if (writeMask.mAtomic) { |
| mAtomic = true; |
| mAtomicOp = writeMask.mAtomicOp; |
| } |
| } |
| |
| void |
| orMask(const WriteMask & writeMask) |
| { |
| assert(mSize == writeMask.mSize); |
| for (int i = 0; i < mSize; i++) { |
| mMask[i] = (mMask.at(i)) | (writeMask.mMask.at(i)); |
| } |
| |
| if (writeMask.mAtomic) { |
| mAtomic = true; |
| mAtomicOp = writeMask.mAtomicOp; |
| } |
| } |
| |
| void |
| setInvertedMask(const WriteMask & writeMask) |
| { |
| assert(mSize == writeMask.mSize); |
| for (int i = 0; i < mSize; i++) { |
| mMask[i] = !writeMask.mMask.at(i); |
| } |
| } |
| |
| int |
| firstBitSet(bool val, int offset = 0) const |
| { |
| for (int i = offset; i < mSize; ++i) |
| if (mMask[i] == val) |
| return i; |
| return mSize; |
| } |
| |
| int |
| count(int offset = 0) const |
| { |
| int count = 0; |
| for (int i = offset; i < mSize; ++i) |
| count += mMask[i]; |
| return count; |
| } |
| |
| void print(std::ostream& out) const; |
| |
| void |
| performAtomic(uint8_t * p) const |
| { |
| for (int i = 0; i < mAtomicOp.size(); i++) { |
| int offset = mAtomicOp[i].first; |
| AtomicOpFunctor *fnctr = mAtomicOp[i].second; |
| (*fnctr)(&p[offset]); |
| } |
| } |
| |
| void |
| performAtomic(DataBlock & blk) const |
| { |
| for (int i = 0; i < mAtomicOp.size(); i++) { |
| int offset = mAtomicOp[i].first; |
| uint8_t *p = blk.getDataMod(offset); |
| AtomicOpFunctor *fnctr = mAtomicOp[i].second; |
| (*fnctr)(p); |
| } |
| } |
| |
| const AtomicOpVector& |
| getAtomicOps() const |
| { |
| return mAtomicOp; |
| } |
| |
| void |
| setAtomicOps(const AtomicOpVector& atomicOps) |
| { |
| mAtomic = true; |
| mAtomicOp = std::move(atomicOps); |
| } |
| |
| private: |
| int mSize; |
| std::vector<bool> mMask; |
| bool mAtomic; |
| AtomicOpVector mAtomicOp; |
| }; |
| |
| inline std::ostream& |
| operator<<(std::ostream& out, const WriteMask& obj) |
| { |
| obj.print(out); |
| out << std::flush; |
| return out; |
| } |
| |
| } // namespace ruby |
| } // namespace gem5 |
| |
| #endif // __MEM_RUBY_COMMON_WRITEMASK_HH__ |
