[Interpreter] Add support for JS calls.

src/arm64/builtins-arm64.cc

Index: src/arm64/builtins-arm64.cc
diff --git a/src/arm64/builtins-arm64.cc b/src/arm64/builtins-arm64.cc
index 8297fc3e2bc4d92869a8b9b06c13ee06674355c2..e8ae45a9ba08342639963f1b6b2c60b3c28b5d65 100644
--- a/src/arm64/builtins-arm64.cc
+++ b/src/arm64/builtins-arm64.cc
@@ -1700,6 +1700,38 @@ void Builtins::Generate_Call(MacroAssembler* masm) {
 }
 
 
+// static
+void Builtins::Generate_PushArgsAndCall(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- x0 : the number of arguments (not including the receiver)
+  //  -- x2 : the address of the first argument to be pushed. Subsequent
+  //          arguments should be consecutive above this, in the same order as
+  //          they are to be pushed onto the stack.
+  //  -- x1 : the target to call (can be any Object).
+
+  // Find the address of the last argument.
+  __ add(x3, x0, Operand(1));  // Add one for receiver.
+  __ lsl(x3, x3, kPointerSizeLog2);
+  __ sub(x4, x2, x3);
+
+  // Push the arguments.
+  Label loop_header, loop_check;
+  __ Mov(x5, jssp);
+  __ Claim(x3, 1);
+  __ B(&loop_check);
+  __ Bind(&loop_header);
+  // TODO(rmcilroy): Push two at a time once we ensure we keep stack aligned.
+  __ Ldr(x3, MemOperand(x2, -kPointerSize, PostIndex));
+  __ Str(x3, MemOperand(x5, -kPointerSize, PreIndex));
+  __ Bind(&loop_check);
+  __ Cmp(x2, x4);
+  __ B(gt, &loop_header);
+
+  // Call the target.
+  __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
+}
+
+
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   ASM_LOCATION("Builtins::Generate_ArgumentsAdaptorTrampoline");
   // ----------- S t a t e -------------