8009615: JvmtiClassFileReconstituter does not create BootstrapMethod attributes

Reviewed-by: coleenp, sspitsyn

src/share/vm/prims/jvmtiClassFileReconstituter.cpp

@@ -341,6 +341,44 @@ void JvmtiClassFileReconstituter::write_annotations_attribute(const char* attr_n
   memcpy(writeable_address(length), annos->adr_at(0), length);
 }
 
+//  BootstrapMethods_attribute {
+//    u2 attribute_name_index;
+//    u4 attribute_length;
+//    u2 num_bootstrap_methods;
+//    {   u2 bootstrap_method_ref;
+//        u2 num_bootstrap_arguments;
+//        u2 bootstrap_arguments[num_bootstrap_arguments];
+//    } bootstrap_methods[num_bootstrap_methods];
+//  }
+void JvmtiClassFileReconstituter::write_boostrapmethod_attribute() {
+  Array<u2>* operands = cpool()->operands();
+  write_attribute_name_index("BootstrapMethods");
+  int num_bootstrap_methods = ConstantPool::operand_array_length(operands);
+
+  // calculate length of attribute
+  int length = sizeof(u2); // num_boostrap_methods
+  for (int n = 0; n < num_bootstrap_methods; n++) {
+    u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n);
+    length += sizeof(u2); // bootstrap_method_ref
+    length += sizeof(u2); // num_bootstrap_arguments
+    length += sizeof(u2) * num_bootstrap_arguments; // bootstrap_arguments[num_bootstrap_arguments]
+  }
+  write_u4(length);
+
+  // write attribute
+  write_u2(num_bootstrap_methods);
+  for (int n = 0; n < num_bootstrap_methods; n++) {
+    u2 bootstrap_method_ref = cpool()->operand_bootstrap_method_ref_index_at(n);
+    u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n);
+    write_u2(bootstrap_method_ref);
+    write_u2(num_bootstrap_arguments);
+    for (int arg = 0; arg < num_bootstrap_arguments; arg++) {
+      u2 bootstrap_argument = cpool()->operand_argument_index_at(n, arg);
+      write_u2(bootstrap_argument);
+    }
+  }
+}
+
 
 // Write InnerClasses attribute
 // JVMSpec|   InnerClasses_attribute {
@@ -597,6 +635,9 @@ void JvmtiClassFileReconstituter::write_class_attributes() {
   if (anno != NULL) {
     ++attr_count;     // has RuntimeVisibleAnnotations attribute
   }
+  if (cpool()->operands() != NULL) {
+    ++attr_count;
+  }
 
   write_u2(attr_count);
 
@@ -615,6 +656,9 @@ void JvmtiClassFileReconstituter::write_class_attributes() {
   if (anno != NULL) {
     write_annotations_attribute("RuntimeVisibleAnnotations", anno);
   }
+  if (cpool()->operands() != NULL) {
+    write_boostrapmethod_attribute();
+  }
 }
 
 // Write the method information portion of ClassFile structure

src/share/vm/prims/jvmtiClassFileReconstituter.hpp

@@ -127,6 +127,7 @@ class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter {
   void write_signature_attribute(u2 generic_signaure_index);
   void write_attribute_name_index(const char* name);
   void write_annotations_attribute(const char* attr_name, AnnotationArray* annos);
+  void write_boostrapmethod_attribute();
 
   address writeable_address(size_t size);
   void write_u1(u1 x);