[Interpreter] Add support for JS calls.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 1220 matching lines @@
       break;
     case kX64Poke: {
       int const slot = MiscField::decode(instr->opcode());
       if (HasImmediateInput(instr, 0)) {
         __ movq(Operand(rsp, slot * kPointerSize), i.InputImmediate(0));
       } else {
         __ movq(Operand(rsp, slot * kPointerSize), i.InputRegister(0));
       }
       break;
     }
+    case kX64PushMultiple: {
+      Register args_start = i.InputRegister(0);
+      Register args_end = i.InputRegister(1);
+      Label loop_header, loop_check;
+      __ j(always, &loop_check);
+      __ bind(&loop_header);
+      __ movp(kScratchRegister, Operand(args_start, 0));

[Benedikt Meurer, 2015/09/07 05:14:30]

This sequence is probably not x32 safe. You should just use
Push(Operand(args_start, 0)) instead.

+      __ pushq(kScratchRegister);
+      __ subp(args_start, Immediate(kPointerSize));
+      __ bind(&loop_check);
+      __ cmpp(args_start, args_end);
+      __ j(greater, &loop_header, Label::kNear);
+      break;
+    }
     case kX64StoreWriteBarrier: {
       Register object = i.InputRegister(0);
       Register value = i.InputRegister(2);
       SaveFPRegsMode mode =
           frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
       if (HasImmediateInput(instr, 1)) {
         int index = i.InputInt32(1);
         Register scratch = i.TempRegister(1);
         __ movq(Operand(object, index), value);
         __ RecordWriteContextSlot(object, index, value, scratch, mode);
@@ skipping 527 matching lines @@
     int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
     __ Nop(padding_size);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8