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 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} |