X87: [builtins] New frame type for exits to C++ builtins.

src/x87/code-stubs-x87.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_X87
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1480 matching lines @@
 
   // Reserve space on the stack for the three arguments passed to the call. If
   // result size is greater than can be returned in registers, also reserve
   // space for the hidden argument for the result location, and space for the
   // result itself.
   int arg_stack_space = result_size() < 3 ? 3 : 4 + result_size();
 
   // Enter the exit frame that transitions from JavaScript to C++.
   if (argv_in_register()) {
     DCHECK(!save_doubles());
+    DCHECK(!is_builtin_exit());
     __ EnterApiExitFrame(arg_stack_space);
 
     // Move argc and argv into the correct registers.
     __ mov(esi, ecx);
     __ mov(edi, eax);
   } else {
-    __ EnterExitFrame(arg_stack_space, save_doubles());
+    __ EnterExitFrame(
+        arg_stack_space, save_doubles(),
+        is_builtin_exit() ? StackFrame::BUILTIN_EXIT : StackFrame::EXIT);
   }
 
   // ebx: pointer to C function  (C callee-saved)
   // ebp: frame pointer  (restored after C call)
   // esp: stack pointer  (restored after C call)
   // edi: number of arguments including receiver  (C callee-saved)
   // esi: pointer to the first argument (C callee-saved)
 
   // Result returned in eax, or eax+edx if result size is 2.
 
@@ skipping 3770 matching lines @@
                            kStackUnwindSpace, nullptr, return_value_operand,
                            NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87