callVN2 method
void
callVN2()
Implementation
void callVN2() {
//Debugger.verbose('${pcHex(-1)} [call_vn2]');
var operands = visitOperandsVar(8, true);
// var resultStore = Engine.STACK_MARKER;
var returnAddr = programCounter;
assert(operands.isNotEmpty);
if (operands[0].value == 0) {
//calling routine at address 0x00 automatically returns FALSE (ref 6.4.3)
log.fine("call_vn got a zero address but is skipping store");
//writeVariable(resultStore, Engine.FALSE);
} else {
//unpack function address
operands[0].rawValue = unpack(operands[0].value!);
//move to the routine address
programCounter = operands[0].rawValue!;
// peel off the first operand
operands.removeAt(0);
//setup the routine stack frame and locals
visitRoutine(operands.map<int?>((o) => o.value).toList());
//push the result store address onto the call stack
callStack.push(Engine.stackMarker);
//push the return address onto the call stack
callStack.push(returnAddr);
}
}