basic.isa revision 2022 
1
2// Declarations for execute() methods.
3def template BasicExecDeclare {{
4        Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const;
5}};
6
7// Basic instruction class declaration template.
8def template BasicDeclare {{
9        /**
10         * Static instruction class for "%(mnemonic)s".
11         */
12        class %(class_name)s : public %(base_class)s
13        {
14        public:
15                /// Constructor.
16                %(class_name)s(MachInst machInst);
17                %(BasicExecDeclare)s
18    };
19}};
20
21// Basic instruction class constructor template.
22def template BasicConstructor {{
23        inline %(class_name)s::%(class_name)s(MachInst machInst)  : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s)
24        {
25                %(constructor)s;
26        }
27}};
28
29// Basic instruction class execute method template.
30def template BasicExecute {{
31        Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
32        {
33                Fault fault = No_Fault;
34
35                %(fp_enable_check)s;
36                %(op_decl)s;
37                %(op_rd)s;
38                %(code)s;
39
40                if(fault == No_Fault)
41                {
42                        %(op_wb)s;
43                }
44                return fault;
45        }
46}};
47
48// Basic decode template.
49def template BasicDecode {{
50        return new %(class_name)s(machInst);
51}};
52
53// Basic decode template, passing mnemonic in as string arg to constructor.
54def template BasicDecodeWithMnemonic {{
55        return new %(class_name)s("%(mnemonic)s", machInst);
56}};
57
58// The most basic instruction format... used only for a few misc. insts
59def format BasicOperate(code, *flags) {{
60        iop = InstObjParams(name, Name, 'SparcStaticInst', CodeBlock(code), flags)
61        header_output = BasicDeclare.subst(iop)
62        decoder_output = BasicConstructor.subst(iop)
63        decode_block = BasicDecode.subst(iop)
64        exec_output = BasicExecute.subst(iop)
65}};
66