gem5/arch/sparc/isa/formats/branch.isa
Gabe Black 9e43f70ac2 Clean up of the SPARC isa description.
--HG--
extra : convert_revision : 21fe35fe4719f487168c89dd7bfc87dc38af0267
2006-03-07 04:33:10 -05:00

62 lines
1.7 KiB
Text

////////////////////////////////////////////////////////////////////
//
// Branch instructions
//
output header {{
/**
* Base class for integer operations.
*/
class Branch : public SparcStaticInst
{
protected:
// Constructor
Branch(const char *mnem, MachInst _machInst, OpClass __opClass) :
SparcStaticInst(mnem, _machInst, __opClass)
{
}
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
};
}};
output decoder {{
std::string Branch::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
return "Branch instruction\n";
}
}};
def template BranchExecute {{
Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
//Attempt to execute the instruction
Fault fault = NoFault;
checkPriv;
%(op_decl)s;
%(op_rd)s;
%(code)s;
if(fault == NoFault)
{
//Write the resulting state to the execution context
%(op_wb)s;
}
return fault;
}
}};
// Primary format for integer operate instructions:
def format Branch(code, *opt_flags) {{
orig_code = code
cblk = CodeBlock(code)
iop = InstObjParams(name, Name, 'SparcStaticInst', cblk, opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
decode_block = BasicDecodeWithMnemonic.subst(iop)
exec_output = BranchExecute.subst(iop)
}};