free_list.cc (2654:9559cfa91b9d) | free_list.cc (2665:a124942bacb8) |
---|---|
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; --- 10 unchanged lines hidden (view full) --- 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. | 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; --- 10 unchanged lines hidden (view full) --- 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 |
|
27 */ 28 29#include "base/trace.hh" 30 31#include "cpu/o3/free_list.hh" 32 | 29 */ 30 31#include "base/trace.hh" 32 33#include "cpu/o3/free_list.hh" 34 |
33SimpleFreeList::SimpleFreeList(unsigned activeThreads, 34 unsigned _numLogicalIntRegs, | 35SimpleFreeList::SimpleFreeList(unsigned _numLogicalIntRegs, |
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{ | 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{ |
44 DPRINTF(FreeList, "Creating new free list object.\n"); | 45 DPRINTF(FreeList, "FreeList: Creating new free list object.\n"); |
45 | 46 |
47 // DEBUG stuff. 48 freeIntRegsScoreboard.resize(numPhysicalIntRegs); 49 50 freeFloatRegsScoreboard.resize(numPhysicalRegs); 51 52 for (PhysRegIndex i = 0; i < numLogicalIntRegs; ++i) { 53 freeIntRegsScoreboard[i] = 0; 54 } 55 |
|
46 // Put all of the extra physical registers onto the free list. This 47 // means excluding all of the base logical registers. | 56 // Put all of the extra physical registers onto the free list. This 57 // means excluding all of the base logical registers. |
48 for (PhysRegIndex i = numLogicalIntRegs * activeThreads; | 58 for (PhysRegIndex i = numLogicalIntRegs; |
49 i < numPhysicalIntRegs; ++i) 50 { 51 freeIntRegs.push(i); | 59 i < numPhysicalIntRegs; ++i) 60 { 61 freeIntRegs.push(i); |
62 63 freeIntRegsScoreboard[i] = 1; |
|
52 } 53 | 64 } 65 |
66 for (PhysRegIndex i = 0; i < numPhysicalIntRegs + numLogicalFloatRegs; 67 ++i) 68 { 69 freeFloatRegsScoreboard[i] = 0; 70 } 71 |
|
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. | 72 // Put all of the extra physical registers onto the free list. This 73 // means excluding all of the base logical registers. Because the 74 // float registers' indices start where the physical registers end, 75 // some math must be done to determine where the free registers start. |
58 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads); 59 60 for ( ; i < numPhysicalRegs; ++i) | 76 for (PhysRegIndex i = numPhysicalIntRegs + numLogicalFloatRegs; 77 i < numPhysicalRegs; ++i) |
61 { 62 freeFloatRegs.push(i); | 78 { 79 freeFloatRegs.push(i); |
80 81 freeFloatRegsScoreboard[i] = 1; |
|
63 } 64} 65 | 82 } 83} 84 |
66std::string 67SimpleFreeList::name() const 68{ 69 return "cpu.freelist"; 70} | |