void InitialCall(Executable exe)
{
_callStack.Clear();
_dataStack.Clear();
Constants = exe.Constants;
// 为了防止用户在Executable new之后添加其他的函数
// 所以链接过程在第一次调用时, 虽然耗时
_entryList = exe.GenEntryList();
// 将指令中所有的entry互相链接
exe.LinkEntryPoint();
// 依赖包按依赖顺序初始化
for (int i = 0; i < exe.PackageCount; i++)
{
var pkg = exe.GetPackage(i);
// 已经创建过了
if (i < _package.Count)
{
continue;
}
var rtPkg = new RuntimePackage(pkg);
_package.Add(rtPkg);
if (pkg.InitEntry != null)
{
// 执行包的全局入口( 只会还行一次)
ExecuteFunc(exe, rtPkg, pkg.InitEntry, 0, 0);
}
}
}
internal void ExecuteFunc(Executable exe, RuntimePackage rtpkg, ValuePhoFunc func, int argCount, int retValueCount)
{
if (func.Commands.Count == 0)
{
return;
}
if (ShowDebugInfo)
{
Logger.DebugLine(string.Format("============ Run '{0}' ============", func.Name));
}
rtpkg.Reg.SetCount(func.RegCount);
EnterFrame(func);
CurrFrame.ReceiverCount = retValueCount;
// 数据栈转寄存器
if (argCount > 0)
{
MoveArgStack2Local(argCount);
_dataStack.Clear();
}
int currSrcLine = 0;
_state = State.Running;
while (true)
{
var cmd = CurrFrame.GetCurrCommand();
if (cmd == null)
{
break;
}
if (ShowDebugInfo)
{
Logger.DebugLine("{0}|{1}", cmd.CodePos, exe.QuerySourceLine(cmd.CodePos));
Logger.DebugLine("---------------------");
Logger.DebugLine("{0,5} {1,2}| {2} {3}", _currFrame.Func.Name, _currFrame.PC, cmd.Op.ToString(), _insset.InstructToString(cmd));
}
// 源码行有变化时
if (currSrcLine == 0 || currSrcLine != cmd.CodePos.Line)
{
if (currSrcLine != 0)
{
CallHook(DebugHook.SourceLine);
}
currSrcLine = cmd.CodePos.Line;
}
// 每条指令执行前
CallHook(DebugHook.AssemblyLine);
if (_insset.ExecCode(this, cmd))
{
if (_currFrame == null)
{
break;
}
_currFrame.PC++;
}
// 打印执行完后的信息
if (ShowDebugInfo)
{
rtpkg.Reg.DebugPrint();
// 寄存器信息
LocalReg.DebugPrint();
// 数据栈信息
DataStack.DebugPrint();
Logger.DebugLine("");
}
}
if (ShowDebugInfo)
{
Logger.DebugLine("============ VM End ============");
}
}