[Interpreter] Add support for JS calls.

src/mips/builtins-mips.cc

 // Copyright 2012 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.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1646 matching lines @@
     __ mov(a1, v0);
     __ Pop(a0);
     __ sra(a0, a0, kSmiTagSize);  // Un-tag.
   }
   // The delegate is always a regular function.
   __ AssertFunction(a1);
   __ Jump(masm->isolate()->builtins()->CallFunction(), RelocInfo::CODE_TARGET);
 }
 
 
+// static
+void Builtins::Generate_PushArgsAndCall(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- a0 : the number of arguments (not including the receiver)
+  //  -- a2 : 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.
+  //  -- a1 : the target to call (can be any Object).
+
+  // Find the address of the last argument.
+  __ Addu(a3, a0, Operand(1));  // Add one for receiver.
+  __ sll(a3, a3, kPointerSizeLog2);
+  __ Subu(a3, a2, Operand(a3));
+
+  // Push the arguments.
+  Label loop_header, loop_check;
+  __ Branch(&loop_check);
+  __ bind(&loop_header);
+  __ lw(t0, MemOperand(a2));
+  __ Addu(a2, a2, Operand(-kPointerSize));
+  __ push(t0);
+  __ bind(&loop_check);
+  __ Branch(&loop_header, gt, a2, Operand(a3));
+
+  // Call the target.
+  __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
+}
+
+
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   // State setup as expected by MacroAssembler::InvokePrologue.
   // ----------- S t a t e -------------
   //  -- a0: actual arguments count
   //  -- a1: function (passed through to callee)
   //  -- a2: expected arguments count
   // -----------------------------------
 
   Label stack_overflow;
   ArgumentAdaptorStackCheck(masm, &stack_overflow);
@@ skipping 139 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS