macromem.hh revision 7343:26c00092d9f3 
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#include "arch/arm/tlb.hh"
47
48namespace ArmISA
49{
50
51static inline unsigned int
52number_of_ones(int32_t val)
53{
54    uint32_t ones = 0;
55    for (int i = 0; i < 32; i++ )
56    {
57        if ( val & (1<<i) )
58            ones++;
59    }
60    return ones;
61}
62
63class MicroOp : public PredOp
64{
65  protected:
66    MicroOp(const char *mnem, ExtMachInst machInst, OpClass __opClass)
67            : PredOp(mnem, machInst, __opClass)
68    {
69    }
70
71  public:
72    void
73    setDelayedCommit()
74    {
75        flags[IsDelayedCommit] = true;
76    }
77};
78
79/**
80 * Microops of the form IntRegA = IntRegB op Imm
81 */
82class MicroIntOp : public MicroOp
83{
84  protected:
85    RegIndex ura, urb;
86    uint8_t imm;
87
88    MicroIntOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
89               RegIndex _ura, RegIndex _urb, uint8_t _imm)
90            : MicroOp(mnem, machInst, __opClass),
91              ura(_ura), urb(_urb), imm(_imm)
92    {
93    }
94};
95
96/**
97 * Memory microops which use IntReg + Imm addressing
98 */
99class MicroMemOp : public MicroIntOp
100{
101  protected:
102    bool up;
103    unsigned memAccessFlags;
104
105    MicroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
106               RegIndex _ura, RegIndex _urb, bool _up, uint8_t _imm)
107            : MicroIntOp(mnem, machInst, __opClass, _ura, _urb, _imm),
108              up(_up), memAccessFlags(TLB::MustBeOne | TLB::AlignWord)
109    {
110    }
111};
112
113class MacroMemOp : public PredMacroOp
114{
115  protected:
116    MacroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
117               IntRegIndex rn, bool index, bool up, bool user,
118               bool writeback, bool load, uint32_t reglist);
119};
120
121class MacroVFPMemOp : public PredMacroOp
122{
123  protected:
124    MacroVFPMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
125                  IntRegIndex rn, RegIndex vd, bool single, bool up,
126                  bool writeback, bool load, uint32_t offset);
127};
128
129}
130
131#endif //__ARCH_ARM_INSTS_MACROMEM_HH__
132