Reland Implement .eh_frame writer and disassembler.

src/codegen.h

 // 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.
 
 #ifndef V8_CODEGEN_H_
 #define V8_CODEGEN_H_
 
 #include "src/code-stubs.h"
 #include "src/runtime/runtime.h"
 
@@ skipping 51 matching lines @@
 #include "src/x87/codegen-x87.h"  // NOLINT
 #else
 #error Unsupported target architecture.
 #endif
 
 namespace v8 {
 namespace internal {
 
 
 class CompilationInfo;
-
+class EhFrameWriter;
 
 class CodeGenerator {
  public:
   // Printing of AST, etc. as requested by flags.
   static void MakeCodePrologue(CompilationInfo* info, const char* kind);
 
   // Allocate and install the code.
   static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,
+                                       EhFrameWriter* unwinding,
                                        CompilationInfo* info);
 
   // Print the code after compiling it.
   static void PrintCode(Handle<Code> code, CompilationInfo* info);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };
 
 
@@ skipping 72 matching lines @@
 #ifdef V8_TARGET_ARCH_ARM64
   const EmbeddedVector<byte, kNoCodeAgeSequenceLength> old_sequence_;
 #endif
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_