Move sched_list.hh and timebuf.hh from src/base to src/cpu.

These files really aren't general enough to belong in src/base.
This patch doesn't reorder include lines, leaving them unsorted
in many cases, but Nate's magic script will fix that up shortly.

--HG--
rename : src/base/sched_list.hh => src/cpu/sched_list.hh
rename : src/base/timebuf.hh => src/cpu/timebuf.hh

1 files changed, 241 insertions, 0 deletions

diff --git a/src/cpu/timebuf.hh b/src/cpu/timebuf.hh
new file mode 100644
index 000000000..b6f709d71
--- /dev/null
+++ b/src/cpu/timebuf.hh
@@ -0,0 +1,241 @@
+/*
+ * Copyright (c) 2004-2005 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.
+ *
+ * Authors: Nathan Binkert
+ *          Kevin Lim
+ */
+
+#ifndef __BASE_TIMEBUF_HH__
+#define __BASE_TIMEBUF_HH__
+
+#include <cassert>
+#include <cstring>
+#include <vector>
+
+template <class T>
+class TimeBuffer
+{
+  protected:
+    int past;
+    int future;
+    unsigned size;
+    int _id;
+
+    char *data;
+    std::vector<char *> index;
+    unsigned base;
+
+    void valid(int idx)
+    {
+        assert (idx >= -past && idx <= future);
+    }
+
+  public:
+    friend class wire;
+    class wire
+    {
+        friend class TimeBuffer;
+      protected:
+        TimeBuffer<T> *buffer;
+        int index;
+
+        void set(int idx)
+        {
+            buffer->valid(idx);
+            index = idx;
+        }
+
+        wire(TimeBuffer<T> *buf, int i)
+            : buffer(buf), index(i)
+        { }
+
+      public:
+        wire()
+        { }
+
+        wire(const wire &i)
+            : buffer(i.buffer), index(i.index)
+        { }
+
+        const wire &operator=(const wire &i)
+        {
+            buffer = i.buffer;
+            set(i.index);
+            return *this;
+        }
+
+        const wire &operator=(int idx)
+        {
+            set(idx);
+            return *this;
+        }
+
+        const wire &operator+=(int offset)
+        {
+            set(index + offset);
+            return *this;
+        }
+
+        const wire &operator-=(int offset)
+        {
+            set(index - offset);
+            return *this;
+        }
+
+        wire &operator++()
+        {
+            set(index + 1);
+            return *this;
+        }
+
+        wire &operator++(int)
+        {
+            int i = index;
+            set(index + 1);
+            return wire(this, i);
+        }
+
+        wire &operator--()
+        {
+            set(index - 1);
+            return *this;
+        }
+
+        wire &operator--(int)
+        {
+            int i = index;
+            set(index - 1);
+            return wire(this, i);
+        }
+        T &operator*() const { return *buffer->access(index); }
+        T *operator->() const { return buffer->access(index); }
+    };
+
+
+  public:
+    TimeBuffer(int p, int f)
+        : past(p), future(f), size(past + future + 1), 
+          data(new char[size * sizeof(T)]), index(size), base(0)
+    {
+        assert(past >= 0 && future >= 0);
+        char *ptr = data;
+        for (unsigned i = 0; i < size; i++) {
+            index[i] = ptr;
+            std::memset(ptr, 0, sizeof(T));
+            new (ptr) T;
+            ptr += sizeof(T);
+        }
+
+        _id = -1;
+    }
+
+    TimeBuffer()
+        : data(NULL)
+    {
+    }
+
+    ~TimeBuffer()
+    {
+        for (unsigned i = 0; i < size; ++i)
+            (reinterpret_cast<T *>(index[i]))->~T();
+        delete [] data;
+    }
+
+    void id(int id)
+    {
+        _id = id;
+    }
+
+    int id()
+    {
+        return _id;
+    }
+
+    void
+    advance()
+    {
+        if (++base >= size)
+            base = 0;
+
+        int ptr = base + future;
+        if (ptr >= (int)size)
+            ptr -= size;
+        (reinterpret_cast<T *>(index[ptr]))->~T();
+        std::memset(index[ptr], 0, sizeof(T));
+        new (index[ptr]) T;
+    }
+
+    T *access(int idx)
+    {
+        //Need more complex math here to calculate index.
+        valid(idx);
+
+        int vector_index = idx + base;
+        if (vector_index >= (int)size) {
+            vector_index -= size;
+        } else if (vector_index < 0) {
+            vector_index += size;
+        }
+
+        return reinterpret_cast<T *>(index[vector_index]);
+    }
+
+    T &operator[](int idx)
+    {
+        //Need more complex math here to calculate index.
+        valid(idx);
+
+        int vector_index = idx + base;
+        if (vector_index >= (int)size) {
+            vector_index -= size;
+        } else if (vector_index < 0) {
+            vector_index += size;
+        }
+
+        return reinterpret_cast<T &>(*index[vector_index]);
+    }
+
+    wire getWire(int idx)
+    {
+        valid(idx);
+
+        return wire(this, idx);
+    }
+
+    wire zero()
+    {
+        return wire(this, 0);
+    }
+
+    unsigned getSize()
+    {
+        return size;
+    }
+};
+
+#endif // __BASE_TIMEBUF_HH__
+