int.isa revision 2043 
1////////////////////////////////////////////////////////////////////
2//
3// Integer operate instructions
4//
5
6output header {{
7        /**
8         * Base class for integer operations.
9         */
10        class IntOp : public MipsStaticInst
11        {
12                protected:
13
14                /// Constructor
15                IntegerOp(const char *mnem, MachInst _machInst, OpClass __opClass) : MipsStaticInst(mnem, _machInst, __opClass)
16                {
17                }
18
19                std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
20        };
21
22}};
23
24output decoder {{
25        std::string IntOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
26        {
27                return "Disassembly of integer instruction\n";
28        }
29
30        std::string IntImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
31        {
32                return "Disassembly of integer immediate instruction\n";
33        }
34}};
35
36def template IntExecute {{
37        Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
38        {
39                //Attempt to execute the instruction
40                try
41                {
42                        %(op_decl)s;
43                        %(op_rd)s;
44                        %(code)s;
45                }
46                //If we have an exception for some reason,
47                //deal with it
48                catch(MipsException except)
49                {
50                        //Deal with exception
51                        return No_Fault;
52                }
53
54                //Write the resulting state to the execution context
55                %(op_wb)s;
56
57                return No_Fault;
58        }
59}};
60
61// Primary format for integer operate instructions:
62def format IntOp(code, *opt_flags) {{
63        orig_code = code
64        cblk = CodeBlock(code)
65        iop = InstObjParams(name, Name, 'MipsStaticInst', cblk, opt_flags)
66        header_output = BasicDeclare.subst(iop)
67        decoder_output = BasicConstructor.subst(iop)
68        decode_block = BasicDecodeWithMnemonic.subst(iop)
69        exec_output = IntegerExecute.subst(iop)
70}};
71
72