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authorRon Dreslinski <rdreslin@umich.edu>2006-03-14 18:03:34 -0500
committerRon Dreslinski <rdreslin@umich.edu>2006-03-14 18:03:34 -0500
commit7405a3530b99f57b1d4a427a47e285afe5dd6e7f (patch)
tree81c4bc8b7449e690725719c02b0f851c895c268e /mem
parent918b3f59c2822605e8959fb7195c3da59baaa528 (diff)
downloadgem5-7405a3530b99f57b1d4a427a47e285afe5dd6e7f.tar.xz
Remove unneeded header files.
Add some forward declerations. Fix ordering problem of variables in constructor (see sourceforge) Factor out code from header into _impl file to speed building process (keep cache_builder smaller in size) --HG-- extra : convert_revision : 20087f88f95628af716094e09c2287e09580149e
Diffstat (limited to 'mem')
-rw-r--r--mem/cache/prefetch/tagged_prefetcher_impl.hh73
1 files changed, 73 insertions, 0 deletions
diff --git a/mem/cache/prefetch/tagged_prefetcher_impl.hh b/mem/cache/prefetch/tagged_prefetcher_impl.hh
new file mode 100644
index 000000000..6c27256a9
--- /dev/null
+++ b/mem/cache/prefetch/tagged_prefetcher_impl.hh
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2005 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.
+ */
+
+/**
+ * @file
+ * Describes a tagged prefetcher based on template policies.
+ */
+
+#include "mem/cache/prefetch/tagged_prefetcher.hh"
+
+template <class TagStore, class Buffering>
+TaggedPrefetcher<TagStore, Buffering>::
+TaggedPrefetcher(int size, bool pageStop, bool serialSquash,
+ bool cacheCheckPush, bool onlyData,
+ Tick latency, int degree)
+ :Prefetcher<TagStore, Buffering>(size, pageStop, serialSquash,
+ cacheCheckPush, onlyData),
+ latency(latency), degree(degree)
+{
+}
+
+template <class TagStore, class Buffering>
+void
+TaggedPrefetcher<TagStore, Buffering>::
+calculatePrefetch(MemReqPtr &req, std::list<Addr> &addresses,
+ std::list<Tick> &delays)
+{
+ Addr blkAddr = req->paddr & ~(Addr)(this->blkSize-1);
+
+ for (int d=1; d <= degree; d++) {
+ Addr newAddr = blkAddr + d*(this->blkSize);
+ if (this->pageStop &&
+ (blkAddr & ~(TheISA::VMPageSize - 1)) !=
+ (newAddr & ~(TheISA::VMPageSize - 1)))
+ {
+ //Spanned the page, so now stop
+ this->pfSpanPage += degree - d + 1;
+ return;
+ }
+ else
+ {
+ addresses.push_back(newAddr);
+ delays.push_back(latency);
+ }
+ }
+}
+
+