base.isa revision 4561:ade4960f0832 
1// -*- mode:c++ -*-
2
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56// Authors: Gabe Black
57
58let {{
59    # This will be populated with mappings between microop mnemonics and
60    # the classes that represent them.
61    microopClasses = {}
62}};
63
64//A class which is the base of all x86 micro ops. It provides a function to
65//set necessary flags appropriately.
66output header {{
67    class X86MicroopBase : public X86StaticInst
68    {
69      protected:
70        const char * instMnem;
71        uint8_t opSize;
72        uint8_t addrSize;
73
74        X86MicroopBase(ExtMachInst _machInst,
75                const char *mnem, const char *_instMnem,
76                bool isMicro, bool isDelayed,
77                bool isFirst, bool isLast,
78                OpClass __opClass) :
79            X86StaticInst(mnem, _machInst, __opClass),
80            instMnem(_instMnem)
81        {
82            flags[IsMicroop] = isMicro;
83            flags[IsDelayedCommit] = isDelayed;
84            flags[IsFirstMicroop] = isFirst;
85            flags[IsLastMicroop] = isLast;
86        }
87
88        std::string generateDisassembly(Addr pc,
89                const SymbolTable *symtab) const
90        {
91            std::stringstream ss;
92
93            ccprintf(ss, "\t%s.%s", instMnem, mnemonic);
94
95            return ss.str();
96        }
97    };
98}};
99
100//////////////////////////////////////////////////////////////////////////
101//
102// Base class for the python representation of x86 microops
103//
104//////////////////////////////////////////////////////////////////////////
105
106let {{
107    class X86Microop(object):
108        def __init__(self, name):
109            self.name = name
110
111        # This converts a python bool into a C++ bool
112        def cppBool(self, val):
113            if val:
114                return "true"
115            else:
116                return "false"
117
118        # This converts a list of python bools into
119        # a comma seperated list of C++ bools.
120        def microFlagsText(self, vals):
121            text = ""
122            for val in vals:
123                text += ", %s" % self.cppBool(val)
124            return text
125
126        def getAllocator(self, mnemonic, *microFlags):
127            return 'new %s(machInst, %s)' % (self.className, mnemonic, self.microFlagsText(microFlags))
128}};
129
130//////////////////////////////////////////////////////////////////////////
131//
132// FpOp Microop templates
133//
134//////////////////////////////////////////////////////////////////////////
135
136//TODO Actually write an fp microop base class.
137