free_list.cc (2632:1bb2f91485ea) free_list.cc (2654:9559cfa91b9d)
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;

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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
29#include "base/trace.hh"
30
31#include "cpu/o3/free_list.hh"
32
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;

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

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
29#include "base/trace.hh"
30
31#include "cpu/o3/free_list.hh"
32
33SimpleFreeList::SimpleFreeList(unsigned _numLogicalIntRegs,
33SimpleFreeList::SimpleFreeList(unsigned activeThreads,
34 unsigned _numLogicalIntRegs,
34 unsigned _numPhysicalIntRegs,
35 unsigned _numLogicalFloatRegs,
36 unsigned _numPhysicalFloatRegs)
37 : numLogicalIntRegs(_numLogicalIntRegs),
38 numPhysicalIntRegs(_numPhysicalIntRegs),
39 numLogicalFloatRegs(_numLogicalFloatRegs),
40 numPhysicalFloatRegs(_numPhysicalFloatRegs),
41 numPhysicalRegs(numPhysicalIntRegs + numPhysicalFloatRegs)
42{
35 unsigned _numPhysicalIntRegs,
36 unsigned _numLogicalFloatRegs,
37 unsigned _numPhysicalFloatRegs)
38 : numLogicalIntRegs(_numLogicalIntRegs),
39 numPhysicalIntRegs(_numPhysicalIntRegs),
40 numLogicalFloatRegs(_numLogicalFloatRegs),
41 numPhysicalFloatRegs(_numPhysicalFloatRegs),
42 numPhysicalRegs(numPhysicalIntRegs + numPhysicalFloatRegs)
43{
43 DPRINTF(FreeList, "FreeList: Creating new free list object.\n");
44 DPRINTF(FreeList, "Creating new free list object.\n");
44
45
45 // DEBUG stuff.
46 freeIntRegsScoreboard.resize(numPhysicalIntRegs);
47
48 freeFloatRegsScoreboard.resize(numPhysicalRegs);
49
50 for (PhysRegIndex i = 0; i < numLogicalIntRegs; ++i) {
51 freeIntRegsScoreboard[i] = 0;
52 }
53
54 // Put all of the extra physical registers onto the free list. This
55 // means excluding all of the base logical registers.
46 // Put all of the extra physical registers onto the free list. This
47 // means excluding all of the base logical registers.
56 for (PhysRegIndex i = numLogicalIntRegs;
48 for (PhysRegIndex i = numLogicalIntRegs * activeThreads;
57 i < numPhysicalIntRegs; ++i)
58 {
59 freeIntRegs.push(i);
49 i < numPhysicalIntRegs; ++i)
50 {
51 freeIntRegs.push(i);
60
61 freeIntRegsScoreboard[i] = 1;
62 }
63
52 }
53
64 for (PhysRegIndex i = 0; i < numPhysicalIntRegs + numLogicalFloatRegs;
65 ++i)
66 {
67 freeFloatRegsScoreboard[i] = 0;
68 }
69
70 // Put all of the extra physical registers onto the free list. This
71 // means excluding all of the base logical registers. Because the
72 // float registers' indices start where the physical registers end,
73 // some math must be done to determine where the free registers start.
54 // Put all of the extra physical registers onto the free list. This
55 // means excluding all of the base logical registers. Because the
56 // float registers' indices start where the physical registers end,
57 // some math must be done to determine where the free registers start.
74 for (PhysRegIndex i = numPhysicalIntRegs + numLogicalFloatRegs;
75 i < numPhysicalRegs; ++i)
58 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads);
59
60 for ( ; i < numPhysicalRegs; ++i)
76 {
77 freeFloatRegs.push(i);
61 {
62 freeFloatRegs.push(i);
78
79 freeFloatRegsScoreboard[i] = 1;
80 }
81}
82
63 }
64}
65
66std::string
67SimpleFreeList::name() const
68{
69 return "cpu.freelist";
70}