1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
////////////////////////////////////////////////////////////////////
//
// Nop instruction
//
output header {{
/**
* Nop class.
*/
class Nop : public SparcStaticInst
{
public:
// Constructor
Nop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
SparcStaticInst(mnem, _machInst, __opClass)
{
}
// All Nop instructions do the same thing, so this can be
// defined here. Nops can be defined directly, so there needs
// to be a default implementation
Fault execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
//Nothing to see here, move along
return NoFault;
}
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
};
}};
output decoder {{
std::string Nop::generateDisassembly(Addr pc,
const SymbolTable *symtab) const
{
std::stringstream response;
printMnemonic(response, mnemonic);
return response.str();
}
}};
def template NopExecute {{
Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
//Nothing to see here, move along
return NoFault;
}
}};
// Primary format for integer operate instructions:
def format Nop(code, *opt_flags) {{
orig_code = code
cblk = CodeBlock(code)
iop = InstObjParams(name, Name, 'Nop', cblk, opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
decode_block = BasicDecode.subst(iop)
exec_output = NopExecute.subst(iop)
}};
|
