X87: [builtins] Construct builtin frame in String/Number ctors.

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index 62501d7a70842686f5fef7b2b0cd0bc3b2beda70..84f2f38e3c882e37387c584f41578ee8278ab183 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -1078,6 +1078,23 @@ void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   leave();
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Push(ebp);
+  Move(ebp, esp);
+  Push(context);
+  Push(target);
+  Push(argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(argc);
+  Pop(target);
+  Pop(context);
+  leave();
+}
+
 void MacroAssembler::EnterExitFramePrologue(StackFrame::Type frame_type) {
   DCHECK(frame_type == StackFrame::EXIT ||
          frame_type == StackFrame::BUILTIN_EXIT);