[Interpreter] Add BytecodeArray class and add to SharedFunctionInfo.

src/objects.cc

 // Copyright 2013 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 <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 13 matching lines @@
 #include "src/deoptimizer.h"
 #include "src/elements.h"
 #include "src/execution.h"
 #include "src/field-index-inl.h"
 #include "src/field-index.h"
 #include "src/full-codegen.h"
 #include "src/heap/mark-compact.h"
 #include "src/heap/objects-visiting-inl.h"
 #include "src/hydrogen.h"
 #include "src/ic/ic.h"
+#include "src/interpreter/bytecodes.h"
 #include "src/log.h"
 #include "src/lookup.h"
 #include "src/macro-assembler.h"
 #include "src/messages.h"
 #include "src/objects-inl.h"
 #include "src/prototype.h"
 #include "src/safepoint-table.h"
 #include "src/string-search.h"
 #include "src/string-stream.h"
 #include "src/utils.h"
@@ skipping 1199 matching lines @@
     case FIXED_ARRAY_TYPE:
       os << "<FixedArray[" << FixedArray::cast(this)->length() << "]>";
       break;
     case FIXED_DOUBLE_ARRAY_TYPE:
       os << "<FixedDoubleArray[" << FixedDoubleArray::cast(this)->length()
          << "]>";
       break;
     case BYTE_ARRAY_TYPE:
       os << "<ByteArray[" << ByteArray::cast(this)->length() << "]>";
       break;
+    case BYTECODE_ARRAY_TYPE:
+      os << "<BytecodeArray[" << BytecodeArray::cast(this)->length() << "]>";
+      break;
     case FREE_SPACE_TYPE:
       os << "<FreeSpace[" << FreeSpace::cast(this)->Size() << "]>";
       break;
 #define TYPED_ARRAY_SHORT_PRINT(Type, type, TYPE, ctype, size)                \
   case EXTERNAL_##TYPE##_ARRAY_TYPE:                                          \
     os << "<External" #Type "Array["                                          \
        << External##Type##Array::cast(this)->length() << "]>";                \
     break;                                                                    \
   case FIXED_##TYPE##_ARRAY_TYPE:                                             \
     os << "<Fixed" #Type "Array[" << Fixed##Type##Array::cast(this)->length() \
@@ skipping 206 matching lines @@
       break;
     case SYMBOL_TYPE:
       Symbol::BodyDescriptor::IterateBody(this, v);
       break;
 
     case HEAP_NUMBER_TYPE:
     case MUTABLE_HEAP_NUMBER_TYPE:
     case FLOAT32X4_TYPE:
     case FILLER_TYPE:
     case BYTE_ARRAY_TYPE:
+    case BYTECODE_ARRAY_TYPE:
     case FREE_SPACE_TYPE:
       break;
 
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
   case EXTERNAL_##TYPE##_ARRAY_TYPE:                    \
     break;                                              \
                                                         \
   case FIXED_##TYPE##_ARRAY_TYPE:                       \
     reinterpret_cast<FixedTypedArrayBase*>(this)        \
         ->FixedTypedArrayBaseIterateBody(v);            \
@@ skipping 10295 matching lines @@
 
   os << "RelocInfo (size = " << relocation_size() << ")\n";
   for (RelocIterator it(this); !it.done(); it.next()) {
     it.rinfo()->Print(GetIsolate(), os);
   }
   os << "\n";
 }
 #endif  // ENABLE_DISASSEMBLER
 
 
+void BytecodeArray::Disassemble(std::ostream& os) {
+  Vector<char> buf = Vector<char>::New(50);
+  int bytecode_size = 0;

[rmcilroy, 2015/07/20 11:39:46]

Could you print out frame size / locals count here too please. Also start with
some header showing this is a Bytecode array being printed.

[oth, 2015/07/20 13:47:31]

Done.

+  for (int i = 0; i < this->length(); i += bytecode_size) {
+    interpreter::Bytecode bytecode = static_cast<interpreter::Bytecode>(get(i));
+    bytecode_size = interpreter::Bytecodes::Size(bytecode);
+
+    SNPrintF(buf, "%p : ", GetFirstBytecodeAddress() + i);
+    os << buf.start();
+    for (int j = 0; j < bytecode_size; j++) {
+      SNPrintF(buf, "%02x ", get(i + j));
+      os << buf.start();
+    }
+    for (int j = bytecode_size; j < interpreter::Bytecodes::kMaximumSize; j++) {
+      os << "   ";
+    }
+    os << bytecode;
+  }
+}
+
+
 // static
 void JSArray::Initialize(Handle<JSArray> array, int capacity, int length) {
   DCHECK(capacity >= 0);
   array->GetIsolate()->factory()->NewJSArrayStorage(
       array, length, capacity, INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE);
 }
 
 
 // Returns false if the passed-in index is marked non-configurable, which will
 // cause the truncation operation to halt, and thus no further old values need
@@ skipping 4316 matching lines @@
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 }  // namespace internal
 }  // namespace v8