Reland Implement .eh_frame writer and disassembler.

src/codegen.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.
 
 #include "src/codegen.h"
 
 #if defined(V8_OS_AIX)
 #include <fenv.h>  // NOLINT(build/c++11)
 #endif
 #include "src/ast/prettyprinter.h"
 #include "src/bootstrapper.h"
 #include "src/compiler.h"
 #include "src/debug/debug.h"
+#include "src/eh-frame.h"
 #include "src/parsing/parser.h"
 #include "src/runtime/runtime.h"
 
 namespace v8 {
 namespace internal {
 
 
 #if defined(V8_OS_WIN)
 double modulo(double x, double y) {
   // Workaround MS fmod bugs. ECMA-262 says:
@@ skipping 79 matching lines @@
 
 #ifdef DEBUG
   if (info->parse_info() && print_ast) {
     PrintF("--- AST ---\n%s\n",
            AstPrinter(info->isolate()).PrintProgram(info->literal()));
   }
 #endif  // DEBUG
 }
 
 Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm,
+                                             EhFrameWriter* eh_frame_writer,
                                              CompilationInfo* info,
                                              Handle<Object> self_reference) {
   Isolate* isolate = info->isolate();
 
   // Allocate and install the code.
   CodeDesc desc;
   Code::Flags flags = info->code_flags();
   bool is_crankshafted =
       Code::ExtractKindFromFlags(flags) == Code::OPTIMIZED_FUNCTION ||
       info->IsStub();
   masm->GetCode(&desc);
+  if (eh_frame_writer) eh_frame_writer->GetEhFrame(&desc);
+
   Handle<Code> code = isolate->factory()->NewCode(
       desc, flags, self_reference, false, is_crankshafted,
       info->prologue_offset(), info->is_debug() && !is_crankshafted);
   isolate->counters()->total_compiled_code_size()->Increment(
       code->instruction_size());
   isolate->heap()->IncrementCodeGeneratedBytes(is_crankshafted,
       code->instruction_size());
   return code;
 }
 
@@ skipping 50 matching lines @@
       os << "source_position = " << shared->start_position() << "\n";
     }
     code->Disassemble(debug_name.get(), os);
     os << "--- End code ---\n";
   }
 #endif  // ENABLE_DISASSEMBLER
 }
 
 }  // namespace internal
 }  // namespace v8