basicmem.isa revision 2469 
1////////////////////////////////////////////////////////////////////
2//
3// Mem instructions
4//
5
6output header {{
7        /**
8         * Base class for integer operations.
9         */
10        class Mem : public SparcStaticInst
11        {
12          protected:
13
14            // Constructor
15            Mem(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
16                SparcStaticInst(mnem, _machInst, __opClass)
17            {
18            }
19
20            std::string generateDisassembly(Addr pc,
21                    const SymbolTable *symtab) const;
22        };
23}};
24
25output decoder {{
26        std::string Mem::generateDisassembly(Addr pc, const SymbolTable *symtab) const
27        {
28            return "Memory instruction\n";
29        }
30}};
31
32def template MemExecute {{
33        Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
34                Trace::InstRecord *traceData) const
35        {
36            Fault fault = NoFault;
37            %(op_decl)s;
38            %(op_rd)s;
39            ea_code
40            %(code)s;
41
42            if(fault == NoFault)
43            {
44                //Write the resulting state to the execution context
45                %(op_wb)s;
46            }
47
48            return fault;
49        }
50}};
51
52// Primary format for integer operate instructions:
53def format Mem(code, *opt_flags) {{
54        orig_code = code
55        cblk = CodeBlock(code)
56        iop = InstObjParams(name, Name, 'SparcStaticInst', cblk, opt_flags)
57        header_output = BasicDeclare.subst(iop)
58        decoder_output = BasicConstructor.subst(iop)
59        decode_block = BasicDecode.subst(iop)
60        exec_output = MemExecute.subst(iop)
61        exec_output.replace('ea_code', 'EA = I ? (R1 + SIMM13) : R1 + R2;');
62}};
63