regfile.cc revision 9919
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * Copyright (c) 2013 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * Authors: Kevin Lim 30 * Gabe Black 31 * Steve Reinhardt 32 */ 33 34#include "cpu/o3/free_list.hh" 35#include "cpu/o3/regfile.hh" 36 37 38PhysRegFile::PhysRegFile(unsigned _numPhysicalIntRegs, 39 unsigned _numPhysicalFloatRegs) 40 : intRegFile(_numPhysicalIntRegs), 41 floatRegFile(_numPhysicalFloatRegs), 42 baseFloatRegIndex(_numPhysicalIntRegs), 43 totalNumRegs(_numPhysicalIntRegs + _numPhysicalFloatRegs) 44{ 45} 46 47 48void 49PhysRegFile::initFreeList(UnifiedFreeList *freeList) 50{ 51 // Initialize the free lists. 52 PhysRegIndex reg_idx = 0; 53 54 // The initial batch of registers are the integer ones 55 while (reg_idx < baseFloatRegIndex) { 56 freeList->addIntReg(reg_idx++); 57 } 58 59 // The rest of the registers are the floating-point physical 60 // registers; put them onto the floating-point free list. 61 while (reg_idx < totalNumRegs) { 62 freeList->addFloatReg(reg_idx++); 63 } 64} 65