trap.isa revision 2028 
1////////////////////////////////////////////////////////////////////
2//
3// Trap instructions
4//
5
6output header {{
7        /**
8         * Base class for integer operations.
9         */
10        class Trap : public MipsStaticInst
11        {
12                protected:
13
14                /// Constructor
15                Trap(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
23output decoder {{
24        std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const
25        {
26                return "Disassembly of integer instruction\n";
27        }
28}};
29
30def template TrapExecute {{
31        Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
32        {
33                //Call into the trap handler with the appropriate fault
34                return No_Fault;
35        }
36
37                //Write the resulting state to the execution context
38                %(op_wb)s;
39
40                return No_Fault;
41        }
42}};
43
44// Primary format for integer operate instructions:
45def format Trap(code, *opt_flags) {{
46        orig_code = code
47        cblk = CodeBlock(code)
48        iop = InstObjParams(name, Name, 'MipsStaticInst', cblk, opt_flags)
49        header_output = BasicDeclare.subst(iop)
50        decoder_output = BasicConstructor.subst(iop)
51        decode_block = BasicDecodeWithMnemonic.subst(iop)
52        exec_output = TrapExecute.subst(iop)
53}};
54