[builtins] Construct builtin frame in String/Number ctors

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 83436ee4aa14ac81868accab9d78e1175fe79bc8..e604f96bb42a65e884f6b261aa8cd5941d1fb9a8 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -5911,6 +5911,19 @@ void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   lw(fp, MemOperand(fp, 0 * kPointerSize));
 }
 
+void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Push(ra, fp);
+  Move(fp, sp);
+  Push(context, target, argc);
+}
+
+void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
+                                       Register argc) {
+  Pop(context, target, argc);
+  Pop(ra, fp);
+}
+
 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space,
                                     StackFrame::Type frame_type) {
   DCHECK(frame_type == StackFrame::EXIT ||