[strong] Check arity of functions

src/arm/builtins-arm.cc

Index: src/arm/builtins-arm.cc
diff --git a/src/arm/builtins-arm.cc b/src/arm/builtins-arm.cc
index 3dd61b00a4b7e0f57f94e4f5afb58345a0fd1649..7070ce7e27c50cf074fc209b76bb1ac26420ced2 100644
--- a/src/arm/builtins-arm.cc
+++ b/src/arm/builtins-arm.cc
@@ -1722,6 +1722,22 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
 
   {  // Too few parameters: Actual < expected
     __ bind(&too_few);
+
+    // If the function is strong we need to throw an error.
+    Label weak_function;
+    __ ldr(r4, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
+    __ ldr(r4, FieldMemOperand(r4, SharedFunctionInfo::kCompilerHintsOffset));
+    __ tst(r4, Operand(1 << (SharedFunctionInfo::kStrongModeFunction +
+                             kSmiTagSize)));
+    __ b(eq, &weak_function);
+
+    {
+      FrameScope frame(masm, StackFrame::MANUAL);
+      EnterArgumentsAdaptorFrame(masm);
+      __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments, 0);
+    }
+
+    __ bind(&weak_function);
     EnterArgumentsAdaptorFrame(masm);
 
     // Calculate copy start address into r0 and copy end address is fp.