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////////////////////////////////////////////////////////////////////
//
// Trap instructions
//
output header {{
/**
* Base class for trap instructions,
* or instructions that always fault.
*/
class Trap : public SparcStaticInst
{
protected:
// Constructor
Trap(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
SparcStaticInst(mnem, _machInst, __opClass), trapNum(SW_TRAP)
{
}
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
int trapNum;
};
}};
output decoder {{
std::string Trap::generateDisassembly(Addr pc,
const SymbolTable *symtab) const
{
std::stringstream response;
printMnemonic(response, mnemonic);
ccprintf(response, " ");
printReg(response, _srcRegIdx[0]);
ccprintf(response, ", 0x%x", trapNum);
ccprintf(response, ", or ");
printReg(response, _srcRegIdx[1]);
return response.str();
}
}};
def template TrapExecute {{
Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
Fault fault = NoFault;
%(op_decl)s;
%(op_rd)s;
%(code)s
return fault;
}
}};
def format Trap(code, *opt_flags) {{
orig_code = code
cblk = CodeBlock(code)
iop = InstObjParams(name, Name, 'Trap', cblk, opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
decode_block = BasicDecode.subst(iop)
exec_output = TrapExecute.subst(iop)
}};
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