FFI Compiler based on code stub assembler

src/compiler/code-assembler.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 231 matching lines @@
   }
   IntPtrMatcher m(node);
   if (m.HasValue()) out_value = m.Value();
   return m.HasValue();
 }
 
 Node* CodeAssembler::Parameter(int value) {
   return raw_assembler()->Parameter(value);
 }
 
+Node* CodeAssembler::GetJSContextParameter() {
+  CallDescriptor* desc = raw_assembler()->call_descriptor();
+  DCHECK(desc->kind() == CallDescriptor::kCallJSFunction);

[Michael Starzinger, 2017/01/18 10:47:23]

nit: DCHECK(desc->IsJSFunctionCall())

[mattloring, 2017/01/18 17:48:18]

Done.

+  return Parameter(Linkage::GetJSCallContextParamIndex(
+      static_cast<int>(desc->JSParameterCount())));
+}
+
 void CodeAssembler::Return(Node* value) {
   return raw_assembler()->Return(value);
 }
 
 void CodeAssembler::PopAndReturn(Node* pop, Node* value) {
   return raw_assembler()->PopAndReturn(pop, value);
 }
 
 void CodeAssembler::DebugBreak() { raw_assembler()->DebugBreak(); }
 
@@ skipping 333 matching lines @@
 
   Node* nodes[] = {target, args...};
   return raw_assembler()->TailCallN(desc, arraysize(nodes), nodes);
 }
 
 // Instantiate TailCallBytecodeDispatch() with 4 arguments.
 template V8_EXPORT_PRIVATE Node* CodeAssembler::TailCallBytecodeDispatch(
     const CallInterfaceDescriptor& descriptor, Node* target, Node*, Node*,
     Node*, Node*);
 
+Node* CodeAssembler::CallCFunctionN(Signature<MachineType>* signature,
+                                    int input_count, Node* const* inputs) {
+  CallDescriptor* desc = Linkage::GetSimplifiedCDescriptor(zone(), signature);
+  return raw_assembler()->CallN(desc, input_count, inputs);
+}
+
 Node* CodeAssembler::CallCFunction2(MachineType return_type,
                                     MachineType arg0_type,
                                     MachineType arg1_type, Node* function,
                                     Node* arg0, Node* arg1) {
   return raw_assembler()->CallCFunction2(return_type, arg0_type, arg1_type,
                                          function, arg0, arg1);
 }
 
 Node* CodeAssembler::CallCFunction3(MachineType return_type,
                                     MachineType arg0_type,
@@ skipping 203 matching lines @@
       }
     }
   }
 
   bound_ = true;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8