micromediaop.hh revision 12104:edd63f9c6184 
16498Snate@binkert.org/*
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276498Snate@binkert.org *
286498Snate@binkert.org * Authors: Gabe Black
296498Snate@binkert.org */
306498Snate@binkert.org
316498Snate@binkert.org#ifndef __ARCH_X86_INSTS_MICROMEDIAOP_HH__
326498Snate@binkert.org#define __ARCH_X86_INSTS_MICROMEDIAOP_HH__
336498Snate@binkert.org
346498Snate@binkert.org#include "arch/x86/insts/microop.hh"
356498Snate@binkert.org
366498Snate@binkert.orgnamespace X86ISA
376498Snate@binkert.org{
386498Snate@binkert.org    enum MediaFlag {
396498Snate@binkert.org        MediaMultHiOp = 1,
406498Snate@binkert.org        MediaSignedOp = 64,
416498Snate@binkert.org        MediaScalarOp = 128
426498Snate@binkert.org    };
436498Snate@binkert.org
446498Snate@binkert.org    class MediaOpBase : public X86MicroopBase
456498Snate@binkert.org    {
466498Snate@binkert.org      protected:
476498Snate@binkert.org        const RegIndex src1;
486498Snate@binkert.org        const RegIndex dest;
496498Snate@binkert.org        const uint8_t srcSize;
506498Snate@binkert.org        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, uint64_t setFlags,
57                InstRegIndex _src1, InstRegIndex _dest,
58                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
59                OpClass __opClass) :
60            X86MicroopBase(_machInst, mnem, _instMnem, setFlags,
61                    __opClass),
62            src1(_src1.regIdx), dest(_dest.regIdx),
63            srcSize(_srcSize), destSize(_destSize), ext(_ext)
64        {}
65
66        bool
67        scalarOp() const
68        {
69            return ext & MediaScalarOp;
70        }
71
72        int
73        numItems(int size) const
74        {
75            return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
76        }
77
78        bool
79        multHi() const
80        {
81            return ext & MediaMultHiOp;
82        }
83
84        bool
85        signedOp() const
86        {
87            return ext & MediaSignedOp;
88        }
89    };
90
91    class MediaOpReg : public MediaOpBase
92    {
93      protected:
94        const RegIndex src2;
95
96        // Constructor
97        MediaOpReg(ExtMachInst _machInst,
98                const char *mnem, const char *_instMnem, uint64_t setFlags,
99                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
100                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
101                OpClass __opClass) :
102            MediaOpBase(_machInst, mnem, _instMnem, setFlags,
103                    _src1, _dest, _srcSize, _destSize, _ext,
104                    __opClass),
105            src2(_src2.regIdx)
106        {}
107
108        std::string generateDisassembly(Addr pc,
109            const SymbolTable *symtab) const;
110    };
111
112    class MediaOpImm : public MediaOpBase
113    {
114      protected:
115        uint8_t imm8;
116
117        // Constructor
118        MediaOpImm(ExtMachInst _machInst,
119                const char *mnem, const char *_instMnem, uint64_t setFlags,
120                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
121                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
122                OpClass __opClass) :
123            MediaOpBase(_machInst, mnem, _instMnem, setFlags,
124                    _src1, _dest, _srcSize, _destSize, _ext,
125                    __opClass),
126            imm8(_imm8)
127        {}
128
129        std::string generateDisassembly(Addr pc,
130            const SymbolTable *symtab) const;
131    };
132}
133
134#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__
135