base.cc (12754:15c1d281ce1a) base.cc (12766:1c347e60c7fd)
1/*
2 * Copyright (c) 2012-2013, 2018 ARM Limited
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

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831 // Read requester(s) to have buffered the ReadEx snoop and to
832 // invalidate their blocks after receiving them.
833 // assert(!pkt->needsWritable() || blk->isWritable());
834 assert(pkt->getOffset(blkSize) + pkt->getSize() <= blkSize);
835
836 // Check RMW operations first since both isRead() and
837 // isWrite() will be true for them
838 if (pkt->cmd == MemCmd::SwapReq) {
1/*
2 * Copyright (c) 2012-2013, 2018 ARM Limited
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

--- 822 unchanged lines hidden (view full) ---

831 // Read requester(s) to have buffered the ReadEx snoop and to
832 // invalidate their blocks after receiving them.
833 // assert(!pkt->needsWritable() || blk->isWritable());
834 assert(pkt->getOffset(blkSize) + pkt->getSize() <= blkSize);
835
836 // Check RMW operations first since both isRead() and
837 // isWrite() will be true for them
838 if (pkt->cmd == MemCmd::SwapReq) {
839 cmpAndSwap(blk, pkt);
839 if (pkt->isAtomicOp()) {
840 // extract data from cache and save it into the data field in
841 // the packet as a return value from this atomic op
842
843 int offset = tags->extractBlkOffset(pkt->getAddr());
844 uint8_t *blk_data = blk->data + offset;
845 std::memcpy(pkt->getPtr<uint8_t>(), blk_data, pkt->getSize());
846
847 // execute AMO operation
848 (*(pkt->getAtomicOp()))(blk_data);
849
850 // set block status to dirty
851 blk->status |= BlkDirty;
852 } else {
853 cmpAndSwap(blk, pkt);
854 }
840 } else if (pkt->isWrite()) {
841 // we have the block in a writable state and can go ahead,
842 // note that the line may be also be considered writable in
843 // downstream caches along the path to memory, but always
844 // Exclusive, and never Modified
845 assert(blk->isWritable());
846 // Write or WriteLine at the first cache with block in writable state
847 if (blk->checkWrite(pkt)) {

--- 1485 unchanged lines hidden --- 		855 } else if (pkt->isWrite()) {
856 // we have the block in a writable state and can go ahead,
857 // note that the line may be also be considered writable in
858 // downstream caches along the path to memory, but always
859 // Exclusive, and never Modified
860 assert(blk->isWritable());
861 // Write or WriteLine at the first cache with block in writable state
862 if (blk->checkWrite(pkt)) {

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