public override ProtoCore.DSASM.StackValue Execute(ProtoCore.Runtime.Context c, List<ProtoCore.DSASM.StackValue> formalParameters, ProtoCore.DSASM.StackFrame stackFrame, Core core)
{
ProtoCore.DSASM.Interpreter interpreter = new ProtoCore.DSASM.Interpreter(core, true);
ProtoCore.DSASM.Executive oldDSASMExec = null;
if (core.CurrentExecutive != null)
{
oldDSASMExec = core.CurrentExecutive.CurrentDSASMExec;
core.CurrentExecutive.CurrentDSASMExec = interpreter.runtime;
}
// Assert for the block type
activation.globs = core.DSExecutable.runtimeSymbols[core.RunningBlock].GetGlobalSize();
// Push Execution states
int execStateSize = 0;
if (null != stackFrame.ExecutionStates)
{
execStateSize = stackFrame.ExecutionStates.Length;
// ExecutionStates are in lexical order
// Push them in reverse order (similar to args) so they can be retrieved in sequence
// Retrieveing the executing states occur on function return
for (int n = execStateSize - 1; n >= 0 ; --n)
{
ProtoCore.DSASM.StackValue svState = stackFrame.ExecutionStates[n];
Validity.Assert(svState.optype == DSASM.AddressType.Boolean);
interpreter.Push(svState);
}
}
// Push Params
formalParameters.Reverse();
for (int i = 0; i < formalParameters.Count; i++)
{
interpreter.Push(formalParameters[i]);
}
ProtoCore.DSASM.StackValue svThisPtr = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr);
ProtoCore.DSASM.StackValue svBlockDecl = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionBlock);
// Jun: Make sure we have no empty or unaligned frame data
Validity.Assert(DSASM.StackFrame.kStackFrameSize == stackFrame.Frame.Length);
// Setup the stack frame data
//int thisPtr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr).opdata;
int ci = activation.classIndex;
int fi = activation.funcIndex;
int returnAddr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kReturnAddress).opdata;
int blockDecl = (int)svBlockDecl.opdata;
int blockCaller = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionCallerBlock).opdata;
int framePointer = core.Rmem.FramePointer;
int locals = activation.locals;
// Update the running block to tell the execution engine which set of instruction to execute
// TODO(Jun/Jiong): Considering store the orig block id to stack frame
int origRunningBlock = core.RunningBlock;
core.RunningBlock = (int)svBlockDecl.opdata;
// Set SX register
interpreter.runtime.SX = svBlockDecl;
DSASM.StackFrameType callerType = (DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kCallerStackFrameType).opdata;
List<ProtoCore.DSASM.StackValue> registers = new List<DSASM.StackValue>();
ProtoCore.DSASM.StackValue svCallConvention;
bool isDispose = procedureNode.name.Equals(ProtoCore.DSDefinitions.Keyword.Dispose);
bool explicitCall = !c.IsReplicating && !c.IsImplicitCall && !isDispose;
if (explicitCall)
{
svCallConvention = ProtoCore.DSASM.StackUtils.BuildNode(ProtoCore.DSASM.AddressType.CallingConvention, (long)ProtoCore.DSASM.CallingConvention.CallType.kExplicit);
}
else
{
svCallConvention = ProtoCore.DSASM.StackUtils.BuildNode(ProtoCore.DSASM.AddressType.CallingConvention, (long)ProtoCore.DSASM.CallingConvention.CallType.kImplicit);
}
stackFrame.SetAt(DSASM.StackFrame.AbsoluteIndex.kRegisterTX, svCallConvention);
interpreter.runtime.TX = svCallConvention;
// Set SX register
stackFrame.SetAt(DSASM.StackFrame.AbsoluteIndex.kRegisterSX, svBlockDecl);
interpreter.runtime.SX = svBlockDecl;
// TODO Jun:
// The stackframe carries the current set of registers
// Determine if this can be done even for the non explicit call implementation
registers.AddRange(stackFrame.GetRegisters());
// Comment Jun: the depth is always 0 for a function call as we are reseting this for each function call
// This is only incremented for every language block bounce
int depth = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameDepth).opdata;
DSASM.StackFrameType type = (DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameType).opdata;
Validity.Assert(depth == 0);
Validity.Assert(type == DSASM.StackFrameType.kTypeFunction);
core.Rmem.PushStackFrame(svThisPtr, ci, fi, returnAddr, blockDecl, blockCaller, callerType, type, depth, framePointer, registers, locals, execStateSize);
ProtoCore.DSASM.StackValue svRet;
if (explicitCall)
{
svRet = ProtoCore.DSASM.StackUtils.BuildNode(DSASM.AddressType.ExplicitCall, activation.pc);
}
else
{
if (core.ExecMode != DSASM.InterpreterMode.kExpressionInterpreter && core.Options.IDEDebugMode)
{
svRet = interpreter.Run(core.Breakpoints, core.RunningBlock, activation.pc, Language.kInvalid);
}
else
{
svRet = interpreter.Run(core.RunningBlock, activation.pc, Language.kInvalid);
}
core.RunningBlock = origRunningBlock;
}
if (core.CurrentExecutive != null)
{
core.CurrentExecutive.CurrentDSASMExec = oldDSASMExec;
}
return svRet; //DSASM.Mirror.ExecutionMirror.Unpack(svRet, core.heap, core);
}
public override StackValue Execute(ProtoCore.Runtime.Context c, List<StackValue> formalParameters, ProtoCore.DSASM.StackFrame stackFrame, Core core)
{ // ensure there is no data race, function resolution and execution happens in parallel
// but for FFI we want it to be serial cause the code we are calling into may not cope
// with parallelism.
//
// we are always looking and putting our function pointers in handler with each lang
// so better lock for FFIHandler (being static) it will be good object to lock
//
lock (FFIHandlers)
{
ProtoCore.DSASM.Interpreter interpreter = new ProtoCore.DSASM.Interpreter(core, true);
StackValue svThisPtr = stackFrame.GetAt(StackFrame.AbsoluteIndex.kThisPtr);
StackValue svBlockDecl = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionBlock);
// Setup the stack frame data
//int thisPtr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr).opdata;
int ci = activation.JILRecord.classIndex;
int fi = activation.JILRecord.funcIndex;
int returnAddr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kReturnAddress).opdata;
int blockDecl = (int)svBlockDecl.opdata;
int blockCaller = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionCallerBlock).opdata;
int framePointer = core.Rmem.FramePointer;
int locals = activation.JILRecord.locals;
FFIHandler handler = FFIHandlers[activation.ModuleType];
FFIActivationRecord r = activation;
string className = "";
if (activation.JILRecord.classIndex > 0)
{
className = core.DSExecutable.classTable.ClassNodes[activation.JILRecord.classIndex].name;
}
bool gcThisPtr = false;
List<ProtoCore.Type> argTypes = new List<Type>(r.ParameterTypes);
ProcedureNode fNode = null;
if (ProtoCore.DSASM.Constants.kInvalidIndex != ci)
{
fNode = interpreter.runtime.exe.classTable.ClassNodes[ci].vtable.procList[fi];
}
// Check if this is a 'this' pointer function overload that was generated by the compiler
if (null != fNode && fNode.isAutoGeneratedThisProc)
{
int thisPtrIndex = 0;
bool isStaticCall = svThisPtr.IsPointer && Constants.kInvalidPointer == (int)svThisPtr.opdata;
if (isStaticCall)
{
thisPtrIndex = formalParameters.Count - 1;
}
argTypes.RemoveAt(thisPtrIndex);
// Comment Jun: Execute() can handle a null this pointer.
// But since we dont even need to to reach there if we dont have a valid this pointer, then just return null
if (formalParameters[thisPtrIndex].IsNull)
{
core.RuntimeStatus.LogWarning(ProtoCore.RuntimeData.WarningID.kDereferencingNonPointer, ProtoCore.RuntimeData.WarningMessage.kDeferencingNonPointer);
return StackValue.Null;
}
// These are the op types allowed.
Validity.Assert(formalParameters[thisPtrIndex].IsPointer ||
formalParameters[thisPtrIndex].IsDefaultArgument);
svThisPtr = formalParameters[thisPtrIndex];
gcThisPtr = true;
formalParameters.RemoveAt(thisPtrIndex);
}
FFIFunctionPointer functionPointer = handler.GetFunctionPointer(r.ModuleName, className, r.FunctionName, argTypes, r.ReturnType);
mFunctionPointer = Validate(functionPointer) ? functionPointer : null;
mFunctionPointer.IsDNI = activation.IsDNI;
if (mFunctionPointer == null)
{
return ProtoCore.DSASM.StackValue.Null;
}
{
interpreter.runtime.executingBlock = core.RunningBlock;
activation.JILRecord.globs = core.DSExecutable.runtimeSymbols[core.RunningBlock].GetGlobalSize();
// Params
formalParameters.Reverse();
for (int i = 0; i < formalParameters.Count; i++)
{
interpreter.Push(formalParameters[i]);
}
List<StackValue> registers = new List<DSASM.StackValue>();
interpreter.runtime.SaveRegisters(registers);
// Comment Jun: the depth is always 0 for a function call as we are reseting this for each function call
// This is only incremented for every language block bounce
int depth = 0;
StackFrameType callerType = (StackFrameType)stackFrame.GetAt(StackFrame.AbsoluteIndex.kCallerStackFrameType).opdata;
// FFI calls do not have execution states
core.Rmem.PushStackFrame(svThisPtr, ci, fi, returnAddr, blockDecl, blockCaller, callerType, ProtoCore.DSASM.StackFrameType.kTypeFunction, depth, framePointer, registers, locals, 0);
//is there a way the current stack be passed across and back into the managed runtime by FFI calling back into the language?
//e.g. DCEnv* carrying all the stack information? look at how vmkit does this.
// = jilMain.Run(ActivationRecord.JILRecord.pc, null, true);
//double[] tempArray = GetUnderlyingArray<double>(jilMain.runtime.rmem.stack);
Object ret = mFunctionPointer.Execute(c, interpreter);
StackValue op;
if (ret == null)
{
op = StackValue.Null;
}
else if (ret is StackValue)
{
op = (StackValue)ret;
}
else if (ret is Int64 || ret is int)
{
op = StackValue.BuildInt((Int64)ret);
}
else if (ret is double)
{
op = StackValue.BuildDouble((double)ret);
}
else
{
throw new ArgumentException(string.Format("FFI: incorrect return type {0} from external function {1}:{2}", activation.ReturnType.Name,
activation.ModuleName, activation.FunctionName));
}
// gc the parameters
if (gcThisPtr)// && core.Options.EnableThisPointerFunctionOverload)
{
// thisptr is sent as parameter, so need to gc it.
// but when running in expression interpreter mode, do not GC because in DSASM.Executive.DecRefCounter() related GC functions,
// the reference count will not be changed in expression interpreter mode.
if (core.ExecMode != ProtoCore.DSASM.InterpreterMode.kExpressionInterpreter)
{
interpreter.runtime.Core.Rmem.Heap.GCRelease(new StackValue[] { svThisPtr }, interpreter.runtime);
}
}
interpreter.runtime.Core.Rmem.Heap.GCRelease(formalParameters.ToArray(), interpreter.runtime);
// increment the reference counter of the return value
interpreter.runtime.GCRetain(op);
// Clear the FFI stack frame
// FFI stack frames have no local variables
interpreter.runtime.rmem.FramePointer = (int)interpreter.runtime.rmem.GetAtRelative(ProtoCore.DSASM.StackFrame.kFrameIndexFramePointer).opdata;
interpreter.runtime.rmem.PopFrame(ProtoCore.DSASM.StackFrame.kStackFrameSize + formalParameters.Count);
return op; //DSASM.Mirror.ExecutionMirror.Unpack(op, core.heap, core);
}
}
}
public StackValue Bounce(int exeblock, int entry, ProtoCore.Runtime.Context context, List<Instruction> breakpoints, ProtoCore.DSASM.StackFrame stackFrame, int locals = 0,
DSASM.Executive exec = null, DebugServices.EventSink sink = null, bool fepRun = false)
{
if (stackFrame != null)
{
StackValue svThisPtr = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr);
int ci = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kClass).opdata;
int fi = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunction).opdata;
int returnAddr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kReturnAddress).opdata;
int blockDecl = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionBlock).opdata;
int blockCaller = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionCallerBlock).opdata;
ProtoCore.DSASM.StackFrameType callerFrameType = (ProtoCore.DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kCallerStackFrameType).opdata;
ProtoCore.DSASM.StackFrameType frameType = (ProtoCore.DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameType).opdata;
Validity.Assert(frameType == StackFrameType.kTypeLanguage);
int depth = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameDepth).opdata;
int framePointer = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFramePointer).opdata;
List<StackValue> registers = stackFrame.GetRegisters();
DebugProps.SetUpBounce(exec, blockCaller, returnAddr);
Rmem.PushStackFrame(svThisPtr, ci, fi, returnAddr, blockDecl, blockCaller, callerFrameType, frameType, depth + 1, framePointer, registers, locals, 0);
}
ProtoCore.Language id = DSExecutable.instrStreamList[exeblock].language;
CurrentExecutive = Executives[id];
StackValue sv = Executives[id].Execute(exeblock, entry, context, breakpoints, sink, fepRun);
return sv;
}
public override StackValue Execute(ProtoCore.Runtime.Context c, List<StackValue> formalParameters, ProtoCore.DSASM.StackFrame stackFrame, Core core)
{
ProtoCore.DSASM.Interpreter interpreter = new ProtoCore.DSASM.Interpreter(core, true);
ProtoCore.DSASM.Executive oldDSASMExec = null;
if (core.CurrentExecutive != null)
{
oldDSASMExec = core.CurrentExecutive.CurrentDSASMExec;
core.CurrentExecutive.CurrentDSASMExec = interpreter.runtime;
}
// Assert for the block type
activation.globs = core.DSExecutable.runtimeSymbols[core.RunningBlock].GetGlobalSize();
//
// Comment Jun:
// Storing execution states is relevant only if the current scope is a function,
// as this mechanism is used to keep track of maintining execution states of recursive calls
// This mechanism should also be ignored if the function call is non-recursive as it does not need to maintains state in that case
int execStateSize = procedureNode.GraphNodeList.Count;
stackFrame.SetAt(StackFrame.AbsoluteIndex.kExecutionStates, StackValue.BuildInt(execStateSize));
for (int n = execStateSize - 1; n >= 0; --n)
{
AssociativeGraph.GraphNode gnode = procedureNode.GraphNodeList[n];
interpreter.Push(StackValue.BuildBoolean(gnode.isDirty));
}
// Push Params
formalParameters.Reverse();
for (int i = 0; i < formalParameters.Count; i++)
{
interpreter.Push(formalParameters[i]);
}
StackValue svThisPtr = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr);
StackValue svBlockDecl = stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionBlock);
// Jun: Make sure we have no empty or unaligned frame data
Validity.Assert(DSASM.StackFrame.kStackFrameSize == stackFrame.Frame.Length);
// Setup the stack frame data
//int thisPtr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kThisPtr).opdata;
int ci = activation.classIndex;
int fi = activation.funcIndex;
int returnAddr = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kReturnAddress).opdata;
int blockDecl = (int)svBlockDecl.opdata;
int blockCaller = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kFunctionCallerBlock).opdata;
int framePointer = core.Rmem.FramePointer;
int locals = activation.locals;
// Update the running block to tell the execution engine which set of instruction to execute
// TODO(Jun/Jiong): Considering store the orig block id to stack frame
int origRunningBlock = core.RunningBlock;
core.RunningBlock = (int)svBlockDecl.opdata;
// Set SX register
interpreter.runtime.SX = svBlockDecl;
DSASM.StackFrameType callerType = (DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kCallerStackFrameType).opdata;
List<StackValue> registers = new List<DSASM.StackValue>();
StackValue svCallConvention;
bool isDispose = CoreUtils.IsDisposeMethod(procedureNode.name);
bool explicitCall = !c.IsReplicating && !c.IsImplicitCall && !isDispose;
if (explicitCall)
{
svCallConvention = StackValue.BuildCallingConversion((int)ProtoCore.DSASM.CallingConvention.CallType.kExplicit);
}
else
{
svCallConvention = StackValue.BuildCallingConversion((int)ProtoCore.DSASM.CallingConvention.CallType.kImplicit);
}
stackFrame.SetAt(DSASM.StackFrame.AbsoluteIndex.kRegisterTX, svCallConvention);
interpreter.runtime.TX = svCallConvention;
// Set SX register
stackFrame.SetAt(DSASM.StackFrame.AbsoluteIndex.kRegisterSX, svBlockDecl);
interpreter.runtime.SX = svBlockDecl;
// TODO Jun:
// The stackframe carries the current set of registers
// Determine if this can be done even for the non explicit call implementation
registers.AddRange(stackFrame.GetRegisters());
// Comment Jun: the depth is always 0 for a function call as we are reseting this for each function call
// This is only incremented for every language block bounce
int depth = (int)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameDepth).opdata;
DSASM.StackFrameType type = (DSASM.StackFrameType)stackFrame.GetAt(DSASM.StackFrame.AbsoluteIndex.kStackFrameType).opdata;
Validity.Assert(depth == 0);
Validity.Assert(type == DSASM.StackFrameType.kTypeFunction);
core.Rmem.PushStackFrame(svThisPtr, ci, fi, returnAddr, blockDecl, blockCaller, callerType, type, depth, framePointer, registers, locals, execStateSize);
StackValue svRet;
if (explicitCall)
{
svRet = ProtoCore.DSASM.StackValue.BuildExplicitCall(activation.pc);
}
else
{
if (core.ExecMode != DSASM.InterpreterMode.kExpressionInterpreter && core.Options.IDEDebugMode)
{
svRet = interpreter.Run(core.Breakpoints, core.RunningBlock, activation.pc, Language.kInvalid);
}
else
{
svRet = interpreter.Run(core.RunningBlock, activation.pc, Language.kInvalid);
}
core.RunningBlock = origRunningBlock;
}
if (core.CurrentExecutive != null)
{
core.CurrentExecutive.CurrentDSASMExec = oldDSASMExec;
}
return svRet; //DSASM.Mirror.ExecutionMirror.Unpack(svRet, core.heap, core);
}