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 activeThreads, 34 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{ |
44 DPRINTF(FreeList, "Creating new free list object.\n"); |
45 |
46 // Put all of the extra physical registers onto the free list. This 47 // means excluding all of the base logical registers. |
48 for (PhysRegIndex i = numLogicalIntRegs * activeThreads; |
49 i < numPhysicalIntRegs; ++i) 50 { 51 freeIntRegs.push(i); |
52 } 53 |
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. |
58 PhysRegIndex i = numPhysicalIntRegs + (numLogicalFloatRegs * activeThreads); 59 60 for ( ; i < numPhysicalRegs; ++i) |
61 { 62 freeFloatRegs.push(i); |
63 } 64} 65 |
66std::string 67SimpleFreeList::name() const 68{ 69 return "cpu.freelist"; 70} |