base.isa revision 2089 
1// -*- mode:c++ -*-
2
3////////////////////////////////////////////////////////////////////
4//
5// Base class for MIPS instructions, and some support functions
6//
7
8//Outputs to decoder.hh
9output header {{
10        /**
11         * Base class for all SPARC static instructions.
12         */
13        class MipsStaticInst : public StaticInst<MIPSISA>
14        {
15        protected:
16
17                // Constructor.
18                MipsStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass)
19                    : StaticInst<SPARCISA>(mnem, _machInst, __opClass)
20                {
21                }
22
23                std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
24        };
25
26}};
27
28//Ouputs to decoder.cc
29output decoder {{
30
31        std::string MipsStaticInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
32        {
33                std::stringstream ss;
34
35                ccprintf(ss, "%-10s ", mnemonic);
36
37                // just print the first two source regs... if there's
38                // a third one, it's a read-modify-write dest (Rc),
39                // e.g. for CMOVxx
40                if(_numSrcRegs > 0)
41                {
42                        printReg(ss, _srcRegIdx[0]);
43                }
44                if(_numSrcRegs > 1)
45                {
46                        ss << ",";
47                        printReg(ss, _srcRegIdx[1]);
48                }
49
50                // just print the first dest... if there's a second one,
51                // it's generally implicit
52                if(_numDestRegs > 0)
53                {
54                        if(_numSrcRegs > 0)
55                                ss << ",";
56                        printReg(ss, _destRegIdx[0]);
57                }
58
59                return ss.str();
60        }
61
62}};
63
64