1/*
2 * Copyright (c) 2009 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * Authors: Gabe Black
29 */
30
31#ifndef __ARCH_X86_INSTS_MICROMEDIAOP_HH__
32#define __ARCH_X86_INSTS_MICROMEDIAOP_HH__
33
34#include "arch/x86/insts/microop.hh"
35
36namespace X86ISA
37{
38 enum MediaFlag {
39 MediaMultHiOp = 1,
40 MediaSignedOp = 64,
41 MediaScalarOp = 128
42 };
43
44 class MediaOpBase : public X86MicroopBase
45 {
46 protected:
47 const RegIndex src1;
48 const RegIndex dest;
49 const uint8_t srcSize;
50 const uint8_t destSize;
51 const uint8_t ext;
52 static const RegIndex foldOBit = 0;
53
54 // Constructor
55 MediaOpBase(ExtMachInst _machInst,
56 const char *mnem, const char *_instMnem,
57 bool isMicro, bool isDelayed,
58 bool isFirst, bool isLast,
59 InstRegIndex _src1, InstRegIndex _dest,
60 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
61 OpClass __opClass) :
62 X86MicroopBase(_machInst, mnem, _instMnem,
63 isMicro, isDelayed, isFirst, isLast,
64 __opClass),
65 src1(_src1.idx), dest(_dest.idx),
66 srcSize(_srcSize), destSize(_destSize), ext(_ext)
67 {}
68
69 bool
70 scalarOp() const
71 {
72 return ext & MediaScalarOp;
73 }
74
75 int
76 numItems(int size) const
77 {
78 return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
79 }
80
81 bool
82 multHi() const
83 {
84 return ext & MediaMultHiOp;
85 }
86
87 bool
88 signedOp() const
89 {
90 return ext & MediaSignedOp;
91 }
92 };
93
94 class MediaOpReg : public MediaOpBase
95 {
96 protected:
97 const RegIndex src2;
98
99 // Constructor
100 MediaOpReg(ExtMachInst _machInst,
101 const char *mnem, const char *_instMnem,
102 bool isMicro, bool isDelayed,
103 bool isFirst, bool isLast,
104 InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
105 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
106 OpClass __opClass) :
107 MediaOpBase(_machInst, mnem, _instMnem,
108 isMicro, isDelayed, isFirst, isLast,
109 _src1, _dest, _srcSize, _destSize, _ext,
110 __opClass),
111 src2(_src2.idx)
112 {}
113
114 std::string generateDisassembly(Addr pc,
115 const SymbolTable *symtab) const;
116 };
117
118 class MediaOpImm : public MediaOpBase
119 {
120 protected:
121 uint8_t imm8;
122
123 // Constructor
124 MediaOpImm(ExtMachInst _machInst,
125 const char *mnem, const char *_instMnem,
126 bool isMicro, bool isDelayed,
127 bool isFirst, bool isLast,
128 InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
129 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
130 OpClass __opClass) :
131 MediaOpBase(_machInst, mnem, _instMnem,
132 isMicro, isDelayed, isFirst, isLast,
133 _src1, _dest, _srcSize, _destSize, _ext,
134 __opClass),
135 imm8(_imm8)
136 {}
137
138 std::string generateDisassembly(Addr pc,
139 const SymbolTable *symtab) const;
140 };
141}
142
143#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__