macromem.hh revision 7639 
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
63/**
64 * Base class for Memory microops
65 */
66class MicroOp : public PredOp
67{
68  protected:
69    MicroOp(const char *mnem, ExtMachInst machInst, OpClass __opClass)
70            : PredOp(mnem, machInst, __opClass)
71    {
72    }
73
74  public:
75    void
76    setDelayedCommit()
77    {
78        flags[IsDelayedCommit] = true;
79    }
80};
81
82/**
83 * Microops for Neon loads/stores
84 */
85class MicroNeonMemOp : public MicroOp
86{
87  protected:
88    RegIndex dest, ura;
89    uint32_t imm;
90    unsigned memAccessFlags;
91
92    MicroNeonMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
93                   RegIndex _dest, RegIndex _ura, uint32_t _imm)
94            : MicroOp(mnem, machInst, __opClass),
95              dest(_dest), ura(_ura), imm(_imm),
96              memAccessFlags(TLB::MustBeOne)
97    {
98    }
99};
100
101/**
102 * Microops for Neon load/store (de)interleaving
103 */
104class MicroNeonMixOp : public MicroOp
105{
106  protected:
107    RegIndex dest, op1;
108    uint32_t step;
109
110    MicroNeonMixOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
111                   RegIndex _dest, RegIndex _op1, uint32_t _step)
112            : MicroOp(mnem, machInst, __opClass),
113              dest(_dest), op1(_op1), step(_step)
114    {
115    }
116};
117
118class MicroNeonMixLaneOp : public MicroNeonMixOp
119{
120  protected:
121    unsigned lane;
122
123    MicroNeonMixLaneOp(const char *mnem, ExtMachInst machInst,
124                       OpClass __opClass, RegIndex _dest, RegIndex _op1,
125                       uint32_t _step, unsigned _lane)
126            : MicroNeonMixOp(mnem, machInst, __opClass, _dest, _op1, _step),
127              lane(_lane)
128    {
129    }
130};
131
132/**
133 * Microops of the form IntRegA = IntRegB op Imm
134 */
135class MicroIntImmOp : public MicroOp
136{
137  protected:
138    RegIndex ura, urb;
139    uint8_t imm;
140
141    MicroIntImmOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
142                  RegIndex _ura, RegIndex _urb, uint8_t _imm)
143            : MicroOp(mnem, machInst, __opClass),
144              ura(_ura), urb(_urb), imm(_imm)
145    {
146    }
147
148    std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
149};
150
151/**
152 * Microops of the form IntRegA = IntRegB op IntRegC
153 */
154class MicroIntOp : public MicroOp
155{
156  protected:
157    RegIndex ura, urb, urc;
158
159    MicroIntOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
160               RegIndex _ura, RegIndex _urb, RegIndex _urc)
161            : MicroOp(mnem, machInst, __opClass),
162              ura(_ura), urb(_urb), urc(_urc)
163    {
164    }
165
166    std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
167};
168
169/**
170 * Memory microops which use IntReg + Imm addressing
171 */
172class MicroMemOp : public MicroIntImmOp
173{
174  protected:
175    bool up;
176    unsigned memAccessFlags;
177
178    MicroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
179               RegIndex _ura, RegIndex _urb, bool _up, uint8_t _imm)
180            : MicroIntImmOp(mnem, machInst, __opClass, _ura, _urb, _imm),
181              up(_up), memAccessFlags(TLB::MustBeOne | TLB::AlignWord)
182    {
183    }
184
185    std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
186};
187
188/**
189 * Base class for microcoded integer memory instructions.
190 */
191class MacroMemOp : public PredMacroOp
192{
193  protected:
194    MacroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
195               IntRegIndex rn, bool index, bool up, bool user,
196               bool writeback, bool load, uint32_t reglist);
197};
198
199/**
200 * Base classes for microcoded integer memory instructions.
201 */
202class VldMultOp : public PredMacroOp
203{
204  protected:
205    VldMultOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
206              unsigned elems, RegIndex rn, RegIndex vd, unsigned regs,
207              unsigned inc, uint32_t size, uint32_t align, RegIndex rm);
208};
209
210class VldSingleOp : public PredMacroOp
211{
212  protected:
213    VldSingleOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
214                bool all, unsigned elems, RegIndex rn, RegIndex vd,
215                unsigned regs, unsigned inc, uint32_t size,
216                uint32_t align, RegIndex rm, unsigned lane);
217};
218
219/**
220 * Base class for microcoded integer memory instructions.
221 */
222class VstMultOp : public PredMacroOp
223{
224  protected:
225    VstMultOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
226              unsigned width, RegIndex rn, RegIndex vd, unsigned regs,
227              unsigned inc, uint32_t size, uint32_t align, RegIndex rm);
228};
229
230class VstSingleOp : public PredMacroOp
231{
232  protected:
233    VstSingleOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
234                bool all, unsigned elems, RegIndex rn, RegIndex vd,
235                unsigned regs, unsigned inc, uint32_t size,
236                uint32_t align, RegIndex rm, unsigned lane);
237};
238
239/**
240 * Base class for microcoded floating point memory instructions.
241 */
242class MacroVFPMemOp : public PredMacroOp
243{
244  protected:
245    MacroVFPMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
246                  IntRegIndex rn, RegIndex vd, bool single, bool up,
247                  bool writeback, bool load, uint32_t offset);
248};
249
250}
251
252#endif //__ARCH_ARM_INSTS_MACROMEM_HH__
253