1/*
2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Kevin Lim
29 */
30
31#include "base/trace.hh"
32#include "cpu/o3/free_list.hh"
| 1/*
2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Kevin Lim
29 */
30
31#include "base/trace.hh"
32#include "cpu/o3/free_list.hh"
|
33
34SimpleFreeList::SimpleFreeList(ThreadID activeThreads,
35 unsigned _numLogicalIntRegs,
36 unsigned _numPhysicalIntRegs,
37 unsigned _numLogicalFloatRegs,
38 unsigned _numPhysicalFloatRegs)
39 : numLogicalIntRegs(_numLogicalIntRegs),
40 numPhysicalIntRegs(_numPhysicalIntRegs),
41 numLogicalFloatRegs(_numLogicalFloatRegs),
42 numPhysicalFloatRegs(_numPhysicalFloatRegs),
43 numPhysicalRegs(numPhysicalIntRegs + numPhysicalFloatRegs)
44{
45 DPRINTF(FreeList, "Creating new free list object.\n");
46
47 // Put all of the extra physical registers onto the free list. This
48 // means excluding all of the base logical registers.
49 for (PhysRegIndex i = numLogicalIntRegs * activeThreads;
50 i < numPhysicalIntRegs; ++i)
51 {
52 freeIntRegs.push(i);
53 }
54
55 // Put all of the extra physical registers onto the free list. This
56 // means excluding all of the base logical registers. Because the
57 // float registers' indices start where the physical registers end,
58 // some math must be done to determine where the free registers start.
59 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads);
60
61 for ( ; i < numPhysicalRegs; ++i)
62 {
63 freeFloatRegs.push(i);
64 }
65}
66
67std::string
68SimpleFreeList::name() const
69{
70 return "cpu.freelist";
71}
| 34
35SimpleFreeList::SimpleFreeList(ThreadID activeThreads,
36 unsigned _numLogicalIntRegs,
37 unsigned _numPhysicalIntRegs,
38 unsigned _numLogicalFloatRegs,
39 unsigned _numPhysicalFloatRegs)
40 : numLogicalIntRegs(_numLogicalIntRegs),
41 numPhysicalIntRegs(_numPhysicalIntRegs),
42 numLogicalFloatRegs(_numLogicalFloatRegs),
43 numPhysicalFloatRegs(_numPhysicalFloatRegs),
44 numPhysicalRegs(numPhysicalIntRegs + numPhysicalFloatRegs)
45{
46 DPRINTF(FreeList, "Creating new free list object.\n");
47
48 // Put all of the extra physical registers onto the free list. This
49 // means excluding all of the base logical registers.
50 for (PhysRegIndex i = numLogicalIntRegs * activeThreads;
51 i < numPhysicalIntRegs; ++i)
52 {
53 freeIntRegs.push(i);
54 }
55
56 // Put all of the extra physical registers onto the free list. This
57 // means excluding all of the base logical registers. Because the
58 // float registers' indices start where the physical registers end,
59 // some math must be done to determine where the free registers start.
60 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads);
61
62 for ( ; i < numPhysicalRegs; ++i)
63 {
64 freeFloatRegs.push(i);
65 }
66}
67
68std::string
69SimpleFreeList::name() const
70{
71 return "cpu.freelist";
72}
|