macromem.hh revision 7130:12d7f945261f
1/* 2 * Copyright (c) 2010 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2007-2008 The Florida State University 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Stephen Hines 41 */ 42#ifndef __ARCH_ARM_MACROMEM_HH__ 43#define __ARCH_ARM_MACROMEM_HH__ 44 45#include "arch/arm/insts/pred_inst.hh" 46 47namespace ArmISA 48{ 49 50static inline unsigned int 51number_of_ones(int32_t val) 52{ 53 uint32_t ones = 0; 54 for (int i = 0; i < 32; i++ ) 55 { 56 if ( val & (1<<i) ) 57 ones++; 58 } 59 return ones; 60} 61 62/** 63 * Microops of the form IntRegA = IntRegB op Imm 64 */ 65class MicroIntOp : public PredOp 66{ 67 protected: 68 RegIndex ura, urb; 69 uint8_t imm; 70 71 MicroIntOp(const char *mnem, ExtMachInst machInst, OpClass __opClass, 72 RegIndex _ura, RegIndex _urb, uint8_t _imm) 73 : PredOp(mnem, machInst, __opClass), 74 ura(_ura), urb(_urb), imm(_imm) 75 { 76 } 77}; 78 79/** 80 * Memory microops which use IntReg + Imm addressing 81 */ 82class MicroMemOp : public MicroIntOp 83{ 84 protected: 85 unsigned memAccessFlags; 86 87 MicroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass, 88 RegIndex _ura, RegIndex _urb, uint8_t _imm) 89 : MicroIntOp(mnem, machInst, __opClass, _ura, _urb, _imm), 90 memAccessFlags(0) 91 { 92 } 93}; 94 95/** 96 * Arm Macro Memory operations like LDM/STM 97 */ 98class ArmMacroMemoryOp : public PredMacroOp 99{ 100 protected: 101 /// Memory request flags. See mem_req_base.hh. 102 unsigned memAccessFlags; 103 104 uint32_t reglist; 105 uint32_t ones; 106 107 ArmMacroMemoryOp(const char *mnem, ExtMachInst _machInst, 108 OpClass __opClass) 109 : PredMacroOp(mnem, _machInst, __opClass), memAccessFlags(0), 110 reglist(machInst.regList), ones(0) 111 { 112 ones = number_of_ones(reglist); 113 numMicroops = ones + machInst.puswl.writeback + 1; 114 // Remember that writeback adds a uop 115 microOps = new StaticInstPtr[numMicroops]; 116 } 117}; 118} 119 120#endif //__ARCH_ARM_INSTS_MACROMEM_HH__ 121