free_list.cc (2665:a124942bacb8) | free_list.cc (2670:9107b8bd08cd) |
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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; --- 18 unchanged lines hidden (view full) --- 27 * 28 * Authors: Kevin Lim 29 */ 30 31#include "base/trace.hh" 32 33#include "cpu/o3/free_list.hh" 34 | 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; --- 18 unchanged lines hidden (view full) --- 27 * 28 * Authors: Kevin Lim 29 */ 30 31#include "base/trace.hh" 32 33#include "cpu/o3/free_list.hh" 34 |
35SimpleFreeList::SimpleFreeList(unsigned _numLogicalIntRegs, | 35SimpleFreeList::SimpleFreeList(unsigned activeThreads, 36 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{ | 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{ |
45 DPRINTF(FreeList, "FreeList: Creating new free list object.\n"); | 46 DPRINTF(FreeList, "Creating new free list object.\n"); |
46 | 47 |
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 | |
56 // Put all of the extra physical registers onto the free list. This 57 // means excluding all of the base logical registers. | 48 // Put all of the extra physical registers onto the free list. This 49 // means excluding all of the base logical registers. |
58 for (PhysRegIndex i = numLogicalIntRegs; | 50 for (PhysRegIndex i = numLogicalIntRegs * activeThreads; |
59 i < numPhysicalIntRegs; ++i) 60 { 61 freeIntRegs.push(i); | 51 i < numPhysicalIntRegs; ++i) 52 { 53 freeIntRegs.push(i); |
62 63 freeIntRegsScoreboard[i] = 1; | |
64 } 65 | 54 } 55 |
66 for (PhysRegIndex i = 0; i < numPhysicalIntRegs + numLogicalFloatRegs; 67 ++i) 68 { 69 freeFloatRegsScoreboard[i] = 0; 70 } 71 | |
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. | 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. |
76 for (PhysRegIndex i = numPhysicalIntRegs + numLogicalFloatRegs; 77 i < numPhysicalRegs; ++i) | 60 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads); 61 62 for ( ; i < numPhysicalRegs; ++i) |
78 { 79 freeFloatRegs.push(i); | 63 { 64 freeFloatRegs.push(i); |
80 81 freeFloatRegsScoreboard[i] = 1; | |
82 } 83} 84 | 65 } 66} 67 |
68std::string 69SimpleFreeList::name() const 70{ 71 return "cpu.freelist"; 72} |
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