diff --git a/CMakeLists.txt b/CMakeLists.txt
index c2b2a9ca29..6b28f7c0f8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -306,15 +306,11 @@ project (Jerry CXX C ASM)
  # Jerry's Core
   add_subdirectory(jerry-core)
 
- # Plugins
-  add_subdirectory(plugins)
-
 # Targets declaration
  string(TOLOWER "${PLATFORM_EXT}" PLATFORM_L)
 
  function(declare_targets_for_build_mode BUILD_MODE)
   set(TARGET_NAME ${BUILD_MODE_PREFIX_${BUILD_MODE}}.${PLATFORM_L})
-  set(PLUGINS_TARGET_NAME ${BUILD_MODE_PREFIX_${BUILD_MODE}}.plugins.${PLATFORM_L}.lib)
   set(LIBC_TARGET_NAME ${BUILD_MODE_PREFIX_${BUILD_MODE}}.jerry-libc.${PLATFORM_L}.lib)
 
   function(declare_target_with_modifiers ) # modifiers are passed in ARGN implicit argument
@@ -353,7 +349,7 @@ project (Jerry CXX C ASM)
     target_include_directories(${TARGET_NAME} PRIVATE ${INCLUDE_CORE_INTERFACE})
     target_include_directories(${TARGET_NAME} SYSTEM PRIVATE ${INCLUDE_LIBC_INTERFACE})
     target_include_directories(${TARGET_NAME} SYSTEM PRIVATE ${INCLUDE_EXTERNAL_LIBS_INTERFACE})
-    target_link_libraries(${TARGET_NAME} ${PLUGINS_TARGET_NAME} ${CORE_TARGET_NAME} ${LIBC_TARGET_NAME}
+    target_link_libraries(${TARGET_NAME} ${CORE_TARGET_NAME} ${LIBC_TARGET_NAME}
                           ${FDLIBM_TARGET_NAME} ${PREFIX_IMPORTED_LIB}libgcc ${PREFIX_IMPORTED_LIB}libgcc_eh)
 
     add_cppcheck_target(${TARGET_NAME})
@@ -386,7 +382,7 @@ project (Jerry CXX C ASM)
     target_include_directories(${MAIN_MODULE_TARGET_NAME} SYSTEM PRIVATE ${INCLUDE_EXTERNAL_LIBS_INTERFACE})
 
     add_custom_target(${TARGET_NAME} ALL)
-    add_dependencies(${TARGET_NAME} ${MAIN_MODULE_TARGET_NAME} ${FDLIBM_TARGET_NAME} ${PLUGINS_TARGET_NAME} ${CORE_TARGET_NAME})
+    add_dependencies(${TARGET_NAME} ${MAIN_MODULE_TARGET_NAME} ${FDLIBM_TARGET_NAME}${CORE_TARGET_NAME})
 
     add_custom_command(TARGET ${TARGET_NAME}
                        POST_BUILD
@@ -394,7 +390,6 @@ project (Jerry CXX C ASM)
                        COMMAND echo
                        $<TARGET_FILE:${MAIN_MODULE_TARGET_NAME}>
                        $<TARGET_FILE:${FDLIBM_TARGET_NAME}>
-                       $<TARGET_FILE:${PLUGINS_TARGET_NAME}>
                        $<TARGET_FILE:${CORE_TARGET_NAME}> > ${CMAKE_BINARY_DIR}/${TARGET_NAME}/list)
 
     if(${USE_JERRY_LIBC})
diff --git a/Makefile b/Makefile
index e1909f42c9..7c890cc328 100644
--- a/Makefile
+++ b/Makefile
@@ -215,8 +215,6 @@ $(BUILD_ALL)_native: $(BUILD_DIRS_NATIVE)
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 	@ $(MAKE) -C $(BUILD_DIR)/native jerry-fdlibm-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
-	@ $(MAKE) -C $(BUILD_DIR)/native plugins-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
-          (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 	@ $(MAKE) -C $(BUILD_DIR)/native $(JERRY_LINUX_TARGETS) unittests VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 
@@ -230,8 +228,6 @@ $(JERRY_NUTTX_TARGETS): $(BUILD_DIR)/nuttx
 
 $(BUILD_ALL)_nuttx: $(BUILD_DIRS_NUTTX)
 	@ mkdir -p $(OUT_DIR)/$@
-	@ $(MAKE) -C $(BUILD_DIR)/nuttx plugins-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
-          (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 	@ $(MAKE) -C $(BUILD_DIR)/nuttx $(JERRY_NUTTX_TARGETS) VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 
@@ -248,8 +244,6 @@ $(BUILD_ALL)_stm32f3: $(BUILD_DIRS_STM32F3)
 	@ mkdir -p $(OUT_DIR)/$@
 	@ $(MAKE) -C $(BUILD_DIR)/stm32f3 jerry-libc-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
-	@ $(MAKE) -C $(BUILD_DIR)/stm32f3 plugins-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
-          (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 	@ $(MAKE) -C $(BUILD_DIR)/stm32f3 $(JERRY_STM32F3_TARGETS) VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 
@@ -266,8 +260,6 @@ $(BUILD_ALL)_stm32f4: $(BUILD_DIRS_STM32F4)
 	@ mkdir -p $(OUT_DIR)/$@
 	@ $(MAKE) -C $(BUILD_DIR)/stm32f4 jerry-libc-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
-	@ $(MAKE) -C $(BUILD_DIR)/stm32f4 plugins-all VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
-          (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 	@ $(MAKE) -C $(BUILD_DIR)/stm32f4 $(JERRY_STM32F4_TARGETS) VERBOSE=1 &>$(OUT_DIR)/$@/make.log || \
           (echo "Build failed. See $(OUT_DIR)/$@/make.log for details."; exit 1;)
 
diff --git a/jerry-core/config.h b/jerry-core/config.h
index 1e8b033b10..249574910e 100644
--- a/jerry-core/config.h
+++ b/jerry-core/config.h
@@ -160,26 +160,6 @@
 // #define CONFIG_ECMA_COMPACT_PROFILE_DISABLE_REGEXP_BUILTIN
 #endif /* CONFIG_ECMA_COMPACT_PROFILE */
 
-/**
- * Size of character buffer used to exchange character data between core and extensions' routine
- */
-#define CONFIG_EXTENSION_CHAR_BUFFER_SIZE 2048
-
-/**
- * Maximum number of registered extensions
- */
-#define CONFIG_EXTENSION_MAX_NUMBER_OF_EXTENSIONS 32
-
-/**
- * Maximum number of functions in an extension
- */
-#define CONFIG_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION 1024
-
-/**
- * Maximum number of arguments in a function
- */
-#define CONFIG_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION 16
-
 /**
  * Run GC after execution of each opcode
  */
diff --git a/jerry-core/ecma/base/ecma-globals.h b/jerry-core/ecma/base/ecma-globals.h
index 887fde5a63..49d6988676 100644
--- a/jerry-core/ecma/base/ecma-globals.h
+++ b/jerry-core/ecma/base/ecma-globals.h
@@ -396,9 +396,7 @@ typedef enum
   ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION, /** One of built-in functions described in section 15
                                           of ECMA-262 v5 specification */
   ECMA_OBJECT_TYPE_ARGUMENTS, /**< Arguments object (10.6) */
-  ECMA_OBJECT_TYPE_ARRAY, /**< Array object (15.4) */
-  ECMA_OBJECT_TYPE_EXTENSION, /**< Extension (implementation-defined) object
-                               *   See also: ecma_extension_instantiate */
+  ECMA_OBJECT_TYPE_ARRAY /**< Array object (15.4) */
   // ECMA_OBJECT_TYPE_HOST /**< Host object */
 } ecma_object_type_t;
 
diff --git a/jerry-core/ecma/builtin-objects/ecma-builtin-global.inc.h b/jerry-core/ecma/builtin-objects/ecma-builtin-global.inc.h
index 23dafebc5a..a300c76f84 100644
--- a/jerry-core/ecma/builtin-objects/ecma-builtin-global.inc.h
+++ b/jerry-core/ecma/builtin-objects/ecma-builtin-global.inc.h
@@ -133,13 +133,6 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_DATE_UL,
               ECMA_PROPERTY_CONFIGURABLE)
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_DATE_BUILTIN */
 
-// Implementation-defined property for accessing the engine's extensions */
-OBJECT_VALUE (ECMA_MAGIC_STRING_JERRY_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_JERRY),
-              ECMA_PROPERTY_NOT_WRITABLE,
-              ECMA_PROPERTY_NOT_ENUMERABLE,
-              ECMA_PROPERTY_NOT_CONFIGURABLE)
-
 // ECMA-262 v5, 15.1.4.8
 CP_UNIMPLEMENTED_VALUE (ECMA_MAGIC_STRING_REG_EXP_UL,
                         ecma_builtin_get (ECMA_BUILTIN_ID_REGEXP),
diff --git a/jerry-core/ecma/builtin-objects/ecma-builtin-jerry.cpp b/jerry-core/ecma/builtin-objects/ecma-builtin-jerry.cpp
deleted file mode 100644
index b1b3cd370c..0000000000
--- a/jerry-core/ecma/builtin-objects/ecma-builtin-jerry.cpp
+++ /dev/null
@@ -1,592 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <string.h>
-
-#include "ecma-alloc.h"
-#include "ecma-builtins.h"
-#include "ecma-exceptions.h"
-#include "ecma-extension.h"
-#include "ecma-gc.h"
-#include "ecma-helpers.h"
-#include "ecma-objects-general.h"
-
-#define ECMA_BUILTINS_INTERNAL
-#include "ecma-builtins-internal.h"
-
-/**
- * List of registered extensions
- */
-static jerry_extension_descriptor_t *jerry_extensions_list_p = NULL;
-
-/**
- * Index to assign to next registered extension
- */
-static uint32_t jerry_extensions_next_index = 0;
-
-/**
- * If the property's name is one of built-in properties of the built-in object
- * that is not instantiated yet, instantiate the property and
- * return pointer to the instantiated property.
- *
- * @return pointer property, if one was instantiated,
- *         NULL - otherwise.
- */
-ecma_property_t*
-ecma_builtin_jerry_try_to_instantiate_property (ecma_object_t *obj_p, /**< object */
-                                                ecma_string_t *extension_name_p) /**< property's name */
-{
-  JERRY_ASSERT (ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_JERRY));
-  JERRY_ASSERT (ecma_find_named_property (obj_p, extension_name_p) == NULL);
-
-  ssize_t req_buffer_size = ecma_string_to_zt_string (extension_name_p, NULL, 0);
-  JERRY_ASSERT (req_buffer_size < 0);
-
-  ecma_property_t *prop_p = NULL;
-
-  MEM_DEFINE_LOCAL_ARRAY (extension_name_zt_buf_p, -req_buffer_size, uint8_t);
-
-  req_buffer_size = ecma_string_to_zt_string (extension_name_p, extension_name_zt_buf_p, -req_buffer_size);
-  JERRY_ASSERT (req_buffer_size > 0);
-
-#if CONFIG_ECMA_CHAR_ENCODING != CONFIG_ECMA_CHAR_ASCII
-  JERRY_UNIMPLEMENTED ("Only ASCII encoding support is implemented.");
-#else /* CONFIG_ECMA_CHAR_ENCODING == CONFIG_ECMA_CHAR_ASCII */
-  const char *name_p = (const char*) extension_name_zt_buf_p;
-
-  jerry_extension_descriptor_t *desc_p;
-  for (desc_p = jerry_extensions_list_p;
-       desc_p != NULL;
-       desc_p = desc_p->next_p)
-  {
-    if (!strcmp (name_p, desc_p->name_p))
-    {
-      break;
-    }
-  }
-
-  if (desc_p == NULL)
-  {
-    /* no extension with specified name was found */
-    prop_p = NULL;
-  }
-  else
-  {
-    prop_p = ecma_create_named_data_property (obj_p,
-                                              extension_name_p,
-                                              ECMA_PROPERTY_NOT_WRITABLE,
-                                              ECMA_PROPERTY_NOT_ENUMERABLE,
-                                              ECMA_PROPERTY_NOT_CONFIGURABLE);
-
-    ecma_object_t *extension_object_p = ecma_create_object (NULL,
-                                                            false,
-                                                            ECMA_OBJECT_TYPE_EXTENSION);
-    ecma_set_object_is_builtin (extension_object_p, true);
-    ecma_property_t *extension_id_prop_p = ecma_create_internal_property (extension_object_p,
-                                                                          ECMA_INTERNAL_PROPERTY_EXTENSION_ID);
-    extension_id_prop_p->u.internal_property.value = desc_p->index;
-
-    ecma_named_data_property_assign_value (obj_p, prop_p, ecma_make_object_value (extension_object_p));
-
-    ecma_deref_object (extension_object_p);
-  }
-#endif /* CONFIG_ECMA_CHAR_ENCODING == CONFIG_ECMA_CHAR_ASCII */
-
-  MEM_FINALIZE_LOCAL_ARRAY (extension_name_zt_buf_p);
-
-  return prop_p;
-} /* ecma_builtin_jerry_try_to_instantiate_property */
-
-/**
- * Stub for dispatcher of the built-in's routines
- *
- * Warning:
- *         does not return (the stub should be unreachable)
- */
-ecma_completion_value_t
-ecma_builtin_jerry_dispatch_routine (uint16_t builtin_routine_id, /**< built-in wide identifier of routine */
-                                     ecma_value_t this_arg_value __attr_unused___, /**< 'this' argument value */
-                                     const ecma_value_t arguments_list[], /**< list of arguments
-                                                                           *   passed to routine */
-                                     ecma_length_t arguments_number) /**< length of arguments' list */
-{
-  uint32_t extension_object_index = builtin_routine_id / ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION;
-  uint32_t function_index = builtin_routine_id % ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION;
-
-  jerry_extension_descriptor_t *desc_p;
-  for (desc_p = jerry_extensions_list_p;
-       desc_p != NULL;
-       desc_p = desc_p->next_p)
-  {
-    if (desc_p->index == extension_object_index)
-    {
-      break;
-    }
-  }
-  JERRY_ASSERT (desc_p != NULL);
-
-  JERRY_ASSERT (function_index < desc_p->functions_count);
-  jerry_extension_function_t *function_p = &desc_p->functions_p[function_index];
-
-  bool throw_type_error = false;
-  if (function_p->args_number != arguments_number)
-  {
-    throw_type_error = true;
-  }
-  else
-  {
-    uint32_t arg_index;
-    for (arg_index = 0; arg_index < function_p->args_number; arg_index++)
-    {
-      jerry_api_value_t *arg_p = &function_p->args_p[arg_index];
-      const ecma_value_t arg_value = arguments_list[arg_index];
-
-      if (arg_p->type == JERRY_API_DATA_TYPE_BOOLEAN)
-      {
-        if (!ecma_is_value_boolean (arg_value))
-        {
-          break;
-        }
-        else
-        {
-          arg_p->v_bool = ecma_is_value_true (arg_value);
-        }
-      }
-      else if (arg_p->type == JERRY_API_DATA_TYPE_FLOAT32
-               || arg_p->type == JERRY_API_DATA_TYPE_FLOAT64
-               || arg_p->type == JERRY_API_DATA_TYPE_UINT32)
-      {
-        if (!ecma_is_value_number (arg_value))
-        {
-          break;
-        }
-        else
-        {
-          ecma_number_t num_value = *ecma_get_number_from_value (arg_value);
-          if (arg_p->type == JERRY_API_DATA_TYPE_FLOAT32)
-          {
-            arg_p->v_float32 = (float) num_value;
-          }
-          else if (arg_p->type == JERRY_API_DATA_TYPE_FLOAT64)
-          {
-#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
-            JERRY_UNREACHABLE ();
-#elif CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64
-            arg_p->v_float64 = num_value;
-#endif /* CONFIG_ECMA_NUMBER_TYPE ==  CONFIG_ECMA_NUMBER_FLOAT64 */
-          }
-          else if (arg_p->type == JERRY_API_DATA_TYPE_UINT32)
-          {
-            arg_p->v_uint32 = ecma_number_to_uint32 (num_value);
-          }
-        }
-      }
-      else if (arg_p->type == JERRY_API_DATA_TYPE_STRING)
-      {
-        if (!ecma_is_value_string (arg_value))
-        {
-          break;
-        }
-        else
-        {
-          arg_p->v_string = ecma_get_string_from_value (arg_value);
-        }
-      }
-      else
-      {
-        JERRY_ASSERT (arg_p->type == JERRY_API_DATA_TYPE_OBJECT);
-
-        if (!ecma_is_value_object (arg_value))
-        {
-          break;
-        }
-        else
-        {
-          arg_p->v_object = ecma_get_object_from_value (arg_value);
-        }
-      }
-    }
-
-    uint32_t initialized_args_count = arg_index;
-
-    if (initialized_args_count != function_p->args_number)
-    {
-      throw_type_error = true;
-    }
-    else
-    {
-      function_p->function_wrapper_p (function_p);
-    }
-
-    for (arg_index = 0;
-         arg_index < initialized_args_count;
-         arg_index++)
-    {
-      jerry_api_value_t *arg_p = &function_p->args_p[arg_index];
-
-      if (arg_p->type == JERRY_API_DATA_TYPE_STRING)
-      {
-        arg_p->v_string = NULL;
-      }
-      else if (arg_p->type == JERRY_API_DATA_TYPE_OBJECT)
-      {
-        arg_p->v_object = NULL;
-      }
-      else
-      {
-        JERRY_ASSERT (arg_p->type == JERRY_API_DATA_TYPE_BOOLEAN
-                      || arg_p->type == JERRY_API_DATA_TYPE_FLOAT32
-                      || arg_p->type == JERRY_API_DATA_TYPE_FLOAT64
-                      || arg_p->type == JERRY_API_DATA_TYPE_UINT32);
-      }
-    }
-  }
-
-  if (throw_type_error)
-  {
-    return ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
-  }
-  else
-  {
-    jerry_api_value_t& ret_value = function_p->ret_value;
-    ecma_completion_value_t completion;
-
-    if (ret_value.type == JERRY_API_DATA_TYPE_VOID)
-    {
-      completion = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_UNDEFINED);
-    }
-    else if (ret_value.type == JERRY_API_DATA_TYPE_BOOLEAN)
-    {
-      if (ret_value.v_bool)
-      {
-        completion = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_TRUE);
-      }
-      else
-      {
-        completion = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_FALSE);
-      }
-    }
-    else if (ret_value.type == JERRY_API_DATA_TYPE_UINT32
-             || ret_value.type == JERRY_API_DATA_TYPE_FLOAT32
-             || ret_value.type == JERRY_API_DATA_TYPE_FLOAT64)
-    {
-      ecma_number_t* num_value_p = ecma_alloc_number ();
-      if (ret_value.type == JERRY_API_DATA_TYPE_FLOAT32)
-      {
-        *num_value_p = ret_value.v_float32;
-      }
-      else if (ret_value.type == JERRY_API_DATA_TYPE_FLOAT64)
-      {
-#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
-        JERRY_UNREACHABLE ();
-#elif CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64
-        *num_value_p = ret_value.v_float64;
-#endif /* CONFIG_ECMA_NUMBER_TYPE ==  CONFIG_ECMA_NUMBER_FLOAT64 */
-      }
-      else
-      {
-        JERRY_ASSERT (ret_value.type == JERRY_API_DATA_TYPE_UINT32);
-
-        *num_value_p = ecma_uint32_to_number (ret_value.v_uint32);
-      }
-
-      completion = ecma_make_normal_completion_value (ecma_make_number_value (num_value_p));
-    }
-    else if (ret_value.type == JERRY_API_DATA_TYPE_STRING)
-    {
-      completion = ecma_make_normal_completion_value (ecma_make_string_value (ret_value.v_string));
-
-      ret_value.v_string = NULL;
-    }
-    else
-    {
-      JERRY_ASSERT (ret_value.type == JERRY_API_DATA_TYPE_OBJECT);
-
-      completion = ecma_make_normal_completion_value (ecma_make_object_value (ret_value.v_object));
-
-      ret_value.v_object = NULL;
-    }
-
-    return completion;
-  }
-} /* ecma_builtin_jerry_dispatch_routine */
-
-bool
-ecma_extension_register (jerry_extension_descriptor_t *extension_desc_p) /**< extension description */
-{
-  if (jerry_extensions_next_index >= ECMA_EXTENSION_MAX_NUMBER_OF_EXTENSIONS)
-  {
-    return false;
-  }
-
-  if (extension_desc_p->functions_count > ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION)
-  {
-    return false;
-  }
-
-  /* Check names intersection */
-  for (uint32_t i = 0; i < extension_desc_p->fields_count; i++)
-  {
-    for (uint32_t j = 0; j < extension_desc_p->fields_count; j++)
-    {
-      if (i != j
-          && !strcmp (extension_desc_p->fields_p[i].field_name_p,
-                      extension_desc_p->fields_p[j].field_name_p))
-      {
-        return false;
-      }
-    }
-  }
-
-  for (uint32_t i = 0; i < extension_desc_p->functions_count; i++)
-  {
-    if (extension_desc_p->functions_p[i].args_number >= ECMA_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION)
-    {
-      return false;
-    }
-
-#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
-    /* Check if we can represent the arguments' values */
-    for (uint32_t j = 0; j < extension_desc_p->functions_p[i].args_number; j++)
-    {
-      if (extension_desc_p->functions_p[i].args_p[j].type == JERRY_API_DATA_TYPE_FLOAT64)
-      {
-        return false;
-      }
-    }
-#endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32 */
-
-    for (uint32_t j = 0; j < extension_desc_p->functions_count; j++)
-    {
-      if (i != j
-          && !strcmp (extension_desc_p->functions_p[i].function_name_p,
-                      extension_desc_p->functions_p[j].function_name_p))
-      {
-        return false;
-      }
-    }
-  }
-
-  for (uint32_t i = 0; i < extension_desc_p->fields_count; i++)
-  {
-#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
-    /* Check if we can represent the field's value */
-
-    if (extension_desc_p->fields_p[i].type == JERRY_API_DATA_TYPE_FLOAT64)
-    {
-      return false;
-    }
-
-    if (extension_desc_p->fields_p[i].type == JERRY_API_DATA_TYPE_UINT32
-        && (ecma_number_to_uint32 (ecma_uint32_to_number (extension_desc_p->fields_p[i].v_uint32))
-            != extension_desc_p->fields_p[i].v_uint32))
-    {
-      return false;
-    }
-#endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32 */
-
-    for (uint32_t j = 0; j < extension_desc_p->functions_count; j++)
-    {
-      if (!strcmp (extension_desc_p->fields_p[i].field_name_p,
-                   extension_desc_p->functions_p[j].function_name_p))
-      {
-        return false;
-      }
-    }
-  }
-
-  for (jerry_extension_descriptor_t *desc_iter_p = jerry_extensions_list_p;
-       desc_iter_p != NULL;
-       desc_iter_p = desc_iter_p->next_p)
-  {
-    if (desc_iter_p == extension_desc_p
-        || !strcmp (desc_iter_p->name_p, extension_desc_p->name_p))
-    {
-      /* The extension already registered or an extension with the same name already registered */
-      return false;
-    }
-  }
-
-  extension_desc_p->next_p = jerry_extensions_list_p;
-  jerry_extensions_list_p = extension_desc_p;
-  extension_desc_p->index = jerry_extensions_next_index++;
-
-  return true;
-} /* ecma_extension_register */
-
-/**
- * [[GetOwnProperty]] Implementation extension object's operation
- *
- * @return property descriptor
- */
-ecma_property_t*
-ecma_op_extension_object_get_own_property (ecma_object_t *obj_p, /**< the extension object */
-                                           ecma_string_t *property_name_p) /**< property name */
-{
-  JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_EXTENSION);
-
-  // 1.
-  ecma_property_t *prop_p = ecma_op_general_object_get_own_property (obj_p, property_name_p);
-
-  // 2.
-  if (prop_p != NULL)
-  {
-    return prop_p;
-  }
-
-#if CONFIG_ECMA_CHAR_ENCODING != CONFIG_ECMA_CHAR_ASCII
-  JERRY_UNIMPLEMENTED ("Only ASCII encoding support is implemented.");
-#else /* CONFIG_ECMA_CHAR_ENCODING == CONFIG_ECMA_CHAR_ASCII */
-  ssize_t req_buffer_size = ecma_string_to_zt_string (property_name_p, NULL, 0);
-  JERRY_ASSERT (req_buffer_size < 0);
-
-  MEM_DEFINE_LOCAL_ARRAY (property_name_zt_buf_p, -req_buffer_size, uint8_t);
-
-  req_buffer_size = ecma_string_to_zt_string (property_name_p, property_name_zt_buf_p, -req_buffer_size);
-  JERRY_ASSERT (req_buffer_size > 0);
-
-  const char *name_p = (const char*) property_name_zt_buf_p;
-
-  ecma_property_t *extension_id_prop_p = ecma_get_internal_property (obj_p,
-                                                                     ECMA_INTERNAL_PROPERTY_EXTENSION_ID);
-  uint32_t extension_object_index = extension_id_prop_p->u.internal_property.value;
-
-  jerry_extension_descriptor_t *desc_p;
-  for (desc_p = jerry_extensions_list_p;
-       desc_p != NULL;
-       desc_p = desc_p->next_p)
-  {
-    if (desc_p->index == extension_object_index)
-    {
-      break;
-    }
-  }
-  JERRY_ASSERT (desc_p != NULL);
-
-  uint32_t field_index;
-  for (field_index = 0;
-       field_index < desc_p->fields_count;
-       field_index++)
-  {
-    if (!strcmp (name_p, desc_p->fields_p[field_index].field_name_p))
-    {
-      break;
-    }
-  }
-
-  if (field_index < desc_p->fields_count)
-  {
-    const jerry_extension_field_t *field_p = &desc_p->fields_p[field_index];
-
-    ecma_value_t value;
-    prop_p = ecma_create_named_data_property (obj_p,
-                                              property_name_p,
-                                              ECMA_PROPERTY_NOT_WRITABLE,
-                                              ECMA_PROPERTY_NOT_ENUMERABLE,
-                                              ECMA_PROPERTY_NOT_CONFIGURABLE);
-
-    if (field_p->type == JERRY_API_DATA_TYPE_UNDEFINED)
-    {
-      value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
-    }
-    else if (field_p->type == JERRY_API_DATA_TYPE_NULL)
-    {
-      value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_NULL);
-    }
-    else if (field_p->type == JERRY_API_DATA_TYPE_BOOLEAN)
-    {
-      value = ecma_make_simple_value (field_p->v_bool ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
-    }
-    else if (field_p->type == JERRY_API_DATA_TYPE_FLOAT32)
-    {
-      ecma_number_t *num_p = ecma_alloc_number ();
-      *num_p = field_p->v_float32;
-      value = ecma_make_number_value (num_p);
-    }
-#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64
-    else if (field_p->type == JERRY_API_DATA_TYPE_FLOAT64)
-    {
-      JERRY_UNREACHABLE ();
-      ecma_number_t *num_p = ecma_alloc_number ();
-      *num_p = field_p->v_float64;
-      value = ecma_make_number_value (num_p);
-    }
-#endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64 */
-    else if (field_p->type == JERRY_API_DATA_TYPE_UINT32)
-    {
-      ecma_number_t *num_p = ecma_alloc_number ();
-      *num_p = ecma_uint32_to_number (field_p->v_uint32);
-      JERRY_ASSERT (ecma_number_to_uint32 (*num_p) == field_p->v_uint32);
-      value = ecma_make_number_value (num_p);
-    }
-    else
-    {
-      JERRY_ASSERT (field_p->type == JERRY_API_DATA_TYPE_STRING);
-      const ecma_char_t *string_p = (const ecma_char_t*) field_p->v_string;
-      ecma_string_t *str_p = ecma_new_ecma_string (string_p);
-      value = ecma_make_string_value (str_p);
-    }
-
-    ecma_named_data_property_assign_value (obj_p, prop_p, value);
-    ecma_free_value (value, true);
-  }
-  else
-  {
-    uint32_t function_index;
-    for (function_index = 0;
-         function_index < desc_p->functions_count;
-         function_index++)
-    {
-      if (!strcmp (name_p, desc_p->functions_p[function_index].function_name_p))
-      {
-        break;
-      }
-    }
-
-    if (function_index < desc_p->functions_count)
-    {
-      const jerry_extension_function_t *function_p = &desc_p->functions_p[function_index];
-
-      /* Currently, combined identifier of extension object and extension function should fit in uint16_t. */
-      JERRY_STATIC_ASSERT (ECMA_EXTENSION_MAX_NUMBER_OF_EXTENSIONS * ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION
-                           < (1ull << (sizeof (uint16_t) * JERRY_BITSINBYTE)));
-
-      uint32_t routine_id = desc_p->index * ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION + function_index;
-      JERRY_ASSERT ((uint16_t) routine_id == routine_id);
-      JERRY_STATIC_ASSERT ((ecma_number_t) ECMA_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION
-                           == ECMA_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION);
-      ecma_number_t args_number = ecma_uint32_to_number (function_p->args_number);
-      JERRY_ASSERT (function_p->args_number == ecma_number_to_uint32 (args_number));
-      ecma_object_t *func_obj_p = ecma_builtin_make_function_object_for_routine (ECMA_BUILTIN_ID_JERRY,
-                                                                                 (uint16_t) routine_id,
-                                                                                 args_number);
-
-      prop_p = ecma_create_named_data_property (obj_p,
-                                                property_name_p,
-                                                ECMA_PROPERTY_NOT_WRITABLE,
-                                                ECMA_PROPERTY_NOT_ENUMERABLE,
-                                                ECMA_PROPERTY_NOT_CONFIGURABLE);
-
-      ecma_named_data_property_assign_value (obj_p, prop_p, ecma_make_object_value (func_obj_p));
-
-      ecma_deref_object (func_obj_p);
-    }
-  }
-
-  MEM_FINALIZE_LOCAL_ARRAY (property_name_zt_buf_p);
-
-  return prop_p;
-#endif /* CONFIG_ECMA_CHAR_ENCODING == CONFIG_ECMA_CHAR_ASCII */
-} /* ecma_op_extension_object_get_own_property */
diff --git a/jerry-core/ecma/builtin-objects/ecma-builtins.inc.h b/jerry-core/ecma/builtin-objects/ecma-builtins.inc.h
index 15ca2f7cf1..285588f750 100644
--- a/jerry-core/ecma/builtin-objects/ecma-builtins.inc.h
+++ b/jerry-core/ecma/builtin-objects/ecma-builtins.inc.h
@@ -288,12 +288,4 @@ BUILTIN (ECMA_BUILTIN_ID_GLOBAL,
          true,
          global)
 
-/* Jerry's dynamic extension proxy object */
-BUILTIN (ECMA_BUILTIN_ID_JERRY,
-         ECMA_OBJECT_TYPE_GENERAL,
-         ECMA_BUILTIN_ID__COUNT, /* no prototype */
-         false,
-         false,
-         jerry)
-
 #undef BUILTIN
diff --git a/jerry-core/ecma/builtin-objects/ecma-extension.h b/jerry-core/ecma/builtin-objects/ecma-extension.h
deleted file mode 100644
index 313b3d53ce..0000000000
--- a/jerry-core/ecma/builtin-objects/ecma-extension.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ECMA_EXTENSION_H
-#define ECMA_EXTENSION_H
-
-#include "ecma-globals.h"
-#include "jerry-extension.h"
-
-/**
- * Maximum number of registered extensions
- */
-#define ECMA_EXTENSION_MAX_NUMBER_OF_EXTENSIONS (CONFIG_EXTENSION_MAX_NUMBER_OF_EXTENSIONS)
-
-/**
- * Maximum number of functions in an extension
- */
-#define ECMA_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION (CONFIG_EXTENSION_MAX_FUNCTIONS_IN_EXTENSION)
-
-/**
- * Maximum number of arguments in a function
- */
-#define ECMA_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION (CONFIG_EXTENSION_MAX_ARGUMENTS_IN_FUNCTION)
-
-extern bool ecma_extension_register (jerry_extension_descriptor_t *extension_desc_p);
-extern ecma_property_t* ecma_op_extension_object_get_own_property (ecma_object_t*, ecma_string_t*);
-
-#endif /* ECMA_EXTENSION_H */
diff --git a/jerry-core/ecma/operations/ecma-objects.cpp b/jerry-core/ecma/operations/ecma-objects.cpp
index 7440aa489d..f6dd435dc2 100644
--- a/jerry-core/ecma/operations/ecma-objects.cpp
+++ b/jerry-core/ecma/operations/ecma-objects.cpp
@@ -16,7 +16,6 @@
 #include "ecma-array-object.h"
 #include "ecma-builtins.h"
 #include "ecma-exceptions.h"
-#include "ecma-extension.h"
 #include "ecma-globals.h"
 #include "ecma-function-object.h"
 #include "ecma-lcache.h"
@@ -45,7 +44,6 @@ ecma_assert_object_type_is_valid (ecma_object_type_t type) /**< object's impleme
                 || type == ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION
                 || type == ECMA_OBJECT_TYPE_STRING
                 || type == ECMA_OBJECT_TYPE_ARGUMENTS
-                || type == ECMA_OBJECT_TYPE_EXTENSION
                 || type == ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION);
 } /* ecma_assert_object_type_is_valid */
 
@@ -77,7 +75,6 @@ ecma_op_object_get (ecma_object_t *obj_p, /**< the object */
     case ECMA_OBJECT_TYPE_BOUND_FUNCTION:
     case ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION:
     case ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION:
-    case ECMA_OBJECT_TYPE_EXTENSION:
     case ECMA_OBJECT_TYPE_STRING:
     {
       return ecma_op_general_object_get (obj_p, property_name_p);
@@ -138,20 +135,12 @@ ecma_op_object_get_own_property_longpath (ecma_object_t *obj_p, /**< the object
 
       break;
     }
-
-    case ECMA_OBJECT_TYPE_EXTENSION:
-    {
-      prop_p = ecma_op_extension_object_get_own_property (obj_p, property_name_p);
-
-      break;
-    }
   }
 
   if (unlikely (prop_p == NULL))
   {
     if (is_builtin
-        && type != ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION
-        && type != ECMA_OBJECT_TYPE_EXTENSION)
+        && type != ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION)
     {
       prop_p = ecma_builtin_try_to_instantiate_property (obj_p, property_name_p);
     }
@@ -219,7 +208,6 @@ ecma_op_object_get_property (ecma_object_t *obj_p, /**< the object */
    *   [ECMA_OBJECT_TYPE_BOUND_FUNCTION]    = &ecma_op_general_object_get_property,
    *   [ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION] = &ecma_op_general_object_get_property,
    *   [ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION] = &ecma_op_general_object_get_property,
-   *   [ECMA_OBJECT_TYPE_EXTENSION]         = &ecma_op_general_object_get_property,
    *   [ECMA_OBJECT_TYPE_ARGUMENTS]         = &ecma_op_general_object_get_property,
    *   [ECMA_OBJECT_TYPE_STRING]            = &ecma_op_general_object_get_property
    * };
@@ -262,7 +250,6 @@ ecma_op_object_put (ecma_object_t *obj_p, /**< the object */
    *   [ECMA_OBJECT_TYPE_BOUND_FUNCTION]    = &ecma_op_general_object_put,
    *   [ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION] = &ecma_op_general_object_put,
    *   [ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION] = &ecma_op_general_object_put,
-   *   [ECMA_OBJECT_TYPE_EXTENSION]         = &ecma_op_general_object_put,
    *   [ECMA_OBJECT_TYPE_ARGUMENTS]         = &ecma_op_general_object_put,
    *   [ECMA_OBJECT_TYPE_STRING]            = &ecma_op_general_object_put
    * };
@@ -303,7 +290,6 @@ ecma_op_object_can_put (ecma_object_t *obj_p, /**< the object */
    *   [ECMA_OBJECT_TYPE_BOUND_FUNCTION]    = &ecma_op_general_object_can_put,
    *   [ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION] = &ecma_op_general_object_can_put,
    *   [ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION] = &ecma_op_general_object_can_put,
-   *   [ECMA_OBJECT_TYPE_EXTENSION]         = &ecma_op_general_object_can_put,
    *   [ECMA_OBJECT_TYPE_ARGUMENTS]         = &ecma_op_general_object_can_put,
    *   [ECMA_OBJECT_TYPE_STRING]            = &ecma_op_general_object_can_put
    * };
@@ -343,7 +329,6 @@ ecma_op_object_delete (ecma_object_t *obj_p, /**< the object */
     case ECMA_OBJECT_TYPE_BOUND_FUNCTION:
     case ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION:
     case ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION:
-    case ECMA_OBJECT_TYPE_EXTENSION:
     case ECMA_OBJECT_TYPE_STRING:
     {
       return ecma_op_general_object_delete (obj_p,
@@ -393,7 +378,6 @@ ecma_op_object_default_value (ecma_object_t *obj_p, /**< the object */
    *   [ECMA_OBJECT_TYPE_BOUND_FUNCTION]    = &ecma_op_general_object_default_value,
    *   [ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION] = &ecma_op_general_object_default_value,
    *   [ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION] = &ecma_op_general_object_default_value,
-   *   [ECMA_OBJECT_TYPE_EXTENSION]         = &ecma_op_general_object_default_value,
    *   [ECMA_OBJECT_TYPE_ARGUMENTS]         = &ecma_op_general_object_default_value,
    *   [ECMA_OBJECT_TYPE_STRING]            = &ecma_op_general_object_default_value
    * };
@@ -434,7 +418,6 @@ ecma_op_object_define_own_property (ecma_object_t *obj_p, /**< the object */
     case ECMA_OBJECT_TYPE_BOUND_FUNCTION:
     case ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION:
     case ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION:
-    case ECMA_OBJECT_TYPE_EXTENSION:
     case ECMA_OBJECT_TYPE_STRING:
     {
       return ecma_op_general_object_define_own_property (obj_p,
@@ -487,7 +470,6 @@ ecma_op_object_has_instance (ecma_object_t *obj_p, /**< the object */
     case ECMA_OBJECT_TYPE_GENERAL:
     case ECMA_OBJECT_TYPE_STRING:
     case ECMA_OBJECT_TYPE_ARGUMENTS:
-    case ECMA_OBJECT_TYPE_EXTENSION:
     {
       return ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
     }
@@ -555,10 +537,6 @@ ecma_object_get_class_name (ecma_object_t *obj_p) /**< object */
     {
       return ECMA_MAGIC_STRING_ARGUMENTS_UL;
     }
-    case ECMA_OBJECT_TYPE_EXTENSION:
-    {
-      return ECMA_MAGIC_STRING_OBJECT_UL;
-    }
     case ECMA_OBJECT_TYPE_FUNCTION:
     {
       ecma_magic_string_id_t class_name;
@@ -705,8 +683,7 @@ ecma_object_get_class_name (ecma_object_t *obj_p) /**< object */
 #endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS */
           default:
           {
-            JERRY_ASSERT (ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_GLOBAL)
-                          || ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_JERRY));
+            JERRY_ASSERT (ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_GLOBAL));
 
             return ECMA_MAGIC_STRING_OBJECT_UL;
           }
diff --git a/jerry-core/jerry-extension.h b/jerry-core/jerry-extension.h
deleted file mode 100644
index 10e6baf55b..0000000000
--- a/jerry-core/jerry-extension.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef JERRY_EXTENSION_H
-#define JERRY_EXTENSION_H
-
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "jerry-api.h"
-
-/** \addtogroup jerry Jerry engine interface
- * @{
- */
-
-/** \addtogroup jerry_extension Jerry engine extension interface
- * @{
- */
-
-/**
- * Description of an extension object's fields
- */
-typedef struct
-{
-  const char *field_name_p; /**< field name */
-
-  const jerry_api_data_type_t type; /**< field data type */
-
-  /**
-   * Value description
-   */
-  union
-  {
-    const char* v_string; /**< string */
-    bool v_bool; /**< boolean */
-    float v_float32; /**< 32-bit float */
-    double v_float64; /**< 64-bit float */
-    uint32_t v_uint32; /**< 32-bit unsigned integer */
-  };
-} jerry_extension_field_t;
-
-/**
- * Forward declaration of description of an extension object's function
- */
-struct jerry_extension_function_t;
-
-/**
- * Pointer to extension function implementation
- */
-typedef void (*jerry_extension_function_pointer_t) (struct jerry_extension_function_t *function_block_p);
-
-/**
- * Description of an extension object's function
- */
-typedef struct jerry_extension_function_t
-{
-  const char* function_name_p; /**< name of function */
-
-  const jerry_extension_function_pointer_t function_wrapper_p; /**< pointer to function implementation */
-
-  jerry_api_value_t ret_value; /**< function's return value */
-  jerry_api_value_t* args_p; /**< arrays of the function's arguments */
-  const uint32_t args_number; /**< number of arguments */
-} jerry_extension_function_t;
-
-/**
- * Description of an extention object
- */
-typedef struct jerry_extension_descriptor_t
-{
-  const uint32_t fields_count; /**< number of fields */
-  const uint32_t functions_count; /**< number of functions */
-
-  const jerry_extension_field_t* const fields_p; /**< array of field descriptor */
-  jerry_extension_function_t* const functions_p; /**< array of function descriptors */
-
-  const char* const name_p; /**< name of the extension */
-  struct jerry_extension_descriptor_t *next_p; /**< next descriptor in list of registered extensions */
-  uint32_t index; /**< global index of the extension among registered exceptions */
-} jerry_extension_descriptor_t;
-
-extern EXTERN_C bool
-jerry_extend_with (jerry_extension_descriptor_t *desc_p);
-
-/**
- * @}
- * @}
- */
-
-#endif /* !JERRY_EXTENSION_H */
diff --git a/jerry-core/jerry-extension.inc.h b/jerry-core/jerry-extension.inc.h
deleted file mode 100644
index fb47259488..0000000000
--- a/jerry-core/jerry-extension.inc.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "jerry.h"
-
-/* Counting fields */
-enum
-{
-#define EXTENSION_FIELD(_field_name, _type, _value) \
-  JERRY_EXTENSION_ ## EXTENSION_NAME ## _ ## _field_name,
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FIELD
-  JERRY_EXTENSION_FIELDS_NUMBER
-};
-
-/* Counting functions */
-enum
-{
-#define EXTENSION_FUNCTION(_function_name, _function_wrapper, _ret_value_type, _args_number, ... /* args */) \
-  JERRY_EXTENSION_ ## EXTENSION_NAME ## _ ## _function_name,
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FUNCTION
-  JERRY_EXTENSION_FUNCTIONS_NUMBER
-};
-
-/* Fields description */
-static const jerry_extension_field_t jerry_extension_fields[JERRY_EXTENSION_FIELDS_NUMBER + 1] =
-{
-#define EXTENSION_FIELD(_field_name, _type, _value) \
-  { # _field_name, JERRY_API_DATA_TYPE_ ## _type, { _value } },
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FIELD
-#define EMPTY_FIELD_ENTRY { NULL, JERRY_API_DATA_TYPE_UNDEFINED, { NULL } }
-  EMPTY_FIELD_ENTRY
-#undef EMPTY_FIELD_ENTRY
-};
-
-/* Functions wrapper definitions */
-#define EXTENSION_ARG_PASS_BOOL(_arg_index) \
-  args_p[_arg_index].v_bool
-#define EXTENSION_ARG_PASS_FLOAT32(_arg_index) \
-  args_p[_arg_index].v_float32
-#define EXTENSION_ARG_PASS_FLOAT64(_arg_index) \
-  args_p[_arg_index].v_float64
-#define EXTENSION_ARG_PASS_UINT32(_arg_index) \
-  args_p[_arg_index].v_uint32
-#define EXTENSION_ARG_PASS_STRING(_arg_index) \
-  args_p[_arg_index].v_string
-#define EXTENSION_ARG_PASS_OBJECT(_arg_index) \
-  args_p[_arg_index].v_object
-#define EXTENSION_ARG(_arg_index, _type) EXTENSION_ARG_PASS_ ## _type(_arg_index)
-#define EXTENSION_RET_VALUE_SET_VOID
-#define EXTENSION_RET_VALUE_SET_BOOLEAN function_block_p->ret_value.v_bool =
-#define EXTENSION_RET_VALUE_SET_UINT32 function_block_p->ret_value.v_uint32 =
-#define EXTENSION_RET_VALUE_SET_FLOAT32 function_block_p->ret_value.v_float32 =
-#define EXTENSION_RET_VALUE_SET_FLOAT64 function_block_p->ret_value.v_float64 =
-#define EXTENSION_RET_VALUE_SET_STRING function_block_p->ret_value.v_string =
-#define EXTENSION_RET_VALUE_SET_OBJECT function_block_p->ret_value.v_object =
-#define EXTENSION_FUNCTION(_function_name, _function_to_call, _ret_value_type, _args_number, ...) \
-  static void jerry_extension_ ## _function_name ## _wrapper (jerry_extension_function_t *function_block_p) \
-  { \
-     const jerry_api_value_t *args_p = function_block_p->args_p; \
-     EXTENSION_RET_VALUE_SET_ ## _ret_value_type _function_to_call (__VA_ARGS__); \
-  }
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FUNCTION
-#undef EXTENSION_ARG
-#undef EXTENSION_ARG_PASS_OBJECT
-#undef EXTENSION_ARG_PASS_STRING
-#undef EXTENSION_ARG_PASS_UINT32
-#undef EXTENSION_ARG_PASS_FLOAT64
-#undef EXTENSION_ARG_PASS_FLOAT32
-#undef EXTENSION_ARG_PASS_BOOL
-
-/* Functions' arguments description */
-#define EXTENSION_ARG(_arg_index, _type) [_arg_index] = { \
-  (JERRY_API_DATA_TYPE_ ## _type), \
-  { false } /* just for initialization, should be overwritten upon call */ \
-}
-#define EXTENSION_FUNCTION(_function_name, _function_to_call, _ret_value_type, _args_number, ...) \
-  static jerry_api_value_t jerry_extension_function_ ## _function_name ## _args[_args_number] = { \
-    __VA_ARGS__ \
-  };
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FUNCTION
-#undef EXTENSION_ARG
-
-/* Functions description */
-static jerry_extension_function_t jerry_extension_functions[JERRY_EXTENSION_FUNCTIONS_NUMBER + 1] =
-{
-#define EXTENSION_FUNCTION(_function_name, _function_to_call, _ret_value_type, _args_number, ...) \
-  {  \
-    # _function_name, jerry_extension_ ## _function_name ## _wrapper, \
-    { JERRY_API_DATA_TYPE_ ## _ret_value_type, { false } }, \
-    jerry_extension_function_ ## _function_name ## _args, \
-     _args_number \
-  },
-# include EXTENSION_DESCRIPTION_HEADER
-#undef EXTENSION_FUNCTION
-#define EMPTY_FUNCTION_ENTRY { NULL, NULL, { JERRY_API_DATA_TYPE_VOID, { false } }, NULL, 0 }
-  EMPTY_FUNCTION_ENTRY
-#undef EMPTY_FUNCTION_ENTRY
-};
-
-static jerry_extension_descriptor_t jerry_extension =
-{
-  JERRY_EXTENSION_FIELDS_NUMBER,
-  JERRY_EXTENSION_FUNCTIONS_NUMBER,
-  jerry_extension_fields,
-  jerry_extension_functions,
-  EXTENSION_NAME,
-  NULL,
-  0 /* just for initialization, should be overwritten upon registration */
-};
diff --git a/jerry-core/jerry.cpp b/jerry-core/jerry.cpp
index 4ca954b942..0e8a0627fd 100644
--- a/jerry-core/jerry.cpp
+++ b/jerry-core/jerry.cpp
@@ -18,7 +18,6 @@
 #include "ecma-alloc.h"
 #include "ecma-builtins.h"
 #include "ecma-exceptions.h"
-#include "ecma-extension.h"
 #include "ecma-eval.h"
 #include "ecma-function-object.h"
 #include "ecma-gc.h"
@@ -61,11 +60,6 @@ static bool jerry_api_available;
  * @{
  */
 
-/**
- * Buffer of character data (used for exchange between core and extensions' routines)
- */
-char jerry_extension_characters_buffer[CONFIG_EXTENSION_CHAR_BUFFER_SIZE];
-
 #ifdef JERRY_ENABLE_LOG
 /**
  * TODO:
@@ -274,20 +268,6 @@ jerry_api_convert_api_value_to_ecma_value (ecma_value_t *out_value_p, /**< out:
 } /* jerry_api_convert_api_value_to_ecma_value */
 
 
-/**
- * Extend Global scope with specified extension object
- *
- * After extension the object is accessible through non-configurable property
- * with name equal to builtin_object_name converted to ecma chars.
- */
-bool
-jerry_extend_with (jerry_extension_descriptor_t *desc_p) /**< description of the extension object */
-{
-  jerry_assert_api_available ();
-
-  return ecma_extension_register (desc_p);
-} /* jerry_extend_with */
-
 /**
  * @}
  */
diff --git a/jerry-core/jerry.h b/jerry-core/jerry.h
index b60e1d70c0..64bd38080f 100644
--- a/jerry-core/jerry.h
+++ b/jerry-core/jerry.h
@@ -20,7 +20,6 @@
 #include <stdint.h>
 
 #include "jerry-api.h"
-#include "jerry-extension.h"
 
 /** \addtogroup jerry Jerry engine interface
  * @{
diff --git a/main-linux.cpp b/main-linux.cpp
index f4f59f0694..8ec2f55167 100644
--- a/main-linux.cpp
+++ b/main-linux.cpp
@@ -19,8 +19,6 @@
 #include "jerry.h"
 #include "jrt/jrt.h"
 
-#include "plugins/io/init.h"
-
 /**
  * Maximum command line arguments number
  */
@@ -236,8 +234,6 @@ main (int argc,
 
       jerry_init (flags);
 
-      plugin_io_init ();
-
       jerry_completion_code_t ret_code = JERRY_COMPLETION_CODE_OK;
 
       if (!jerry_parse (source_p, source_size))
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
deleted file mode 100644
index aeec865859..0000000000
--- a/plugins/CMakeLists.txt
+++ /dev/null
@@ -1,127 +0,0 @@
-# Copyright 2015 Samsung Electronics Co., Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-cmake_minimum_required (VERSION 2.8.12)
-project (Jerry_Plugins CXX ASM)
-
-# Compiler / linker flags
- set(COMPILE_FLAGS_PLUGINS "${COMPILE_FLAGS_JERRY} ${CXX_FLAGS_JERRY}")
-
-# Definitions
-  # Debug
-   set(DEFINES_PLUGINS_DEBUG )
-
-  # Release
-   set(DEFINES_PLUGINS_RELEASE JERRY_NDEBUG JERRY_DISABLE_HEAVY_DEBUG)
-
- # Platform-specific
-  # Linux
-   set(DEFINES_PLUGINS_LINUX __TARGET_HOST)
-  # MCU
-   # stm32f3
-    set(DEFINES_PLUGINS_MCU_STM32F3 __TARGET_MCU __TARGET_MCU_STM32F3)
-   # stm32f4
-    set(DEFINES_PLUGINS_MCU_STM32F4 __TARGET_MCU __TARGET_MCU_STM32F4)
-  # Nuttx
-   set(DEFINES_PLUGINS_NUTTX __TARGET_NUTTX)
-
-# Include directories
- set(INCLUDE_PLUGINS
-     io
-     lib-device-stm)
-
- # Third-party
-  # Platform-specific
-   # Linux
-     set(INCLUDE_THIRD_PARTY_LINUX )
-
-   # MCU
-    # STM32F3
-     set(INCLUDE_THIRD_PARTY_MCU_STM32F3
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Project/Demonstration
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/CMSIS/Device/ST/STM32F30x/Include
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/STM32F30x_StdPeriph_Driver/inc
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/CMSIS/Include
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0)
-    # STM32F4
-     set(INCLUDE_THIRD_PARTY_MCU_STM32F4
-        ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Project/Demonstration
-        ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/CMSIS/ST/STM32F4xx/Include
-        ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32F4xx_StdPeriph_Driver/inc
-        ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/CMSIS/Include
-        ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0)
-
-   # Nuttx
-    set(INCLUDE_THIRD_PARTY_NUTTX )
-
-# Sources
- file(GLOB SOURCE_PLUGINS
-      io/*.cpp
-      lib-device-stm/*.cpp)
-
- # Third-party
-  # Platform-specific
-   # MCU
-    # stm32f3
-     set(SOURCE_THIRD_PARTY_MCU_STM32F3
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/CMSIS/Device/ST/STM32F30x/Source/Templates/system_stm32f30x.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_tim.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_gpio.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F3-Discovery_FW_V1.1.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_rcc.c)
-    # stm32f4
-     set(SOURCE_THIRD_PARTY_MCU_STM32F4
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/CMSIS/ST/STM32F4xx/Source/Templates/system_stm32f4xx.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_tim.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_gpio.c
-         ${CMAKE_SOURCE_DIR}/third-party/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_rcc.c)
-
-# Platform-specific configuration
- set(DEFINES_PLUGINS ${DEFINES_PLUGINS_${PLATFORM_EXT}})
- set(INCLUDE_PLUGINS ${INCLUDE_PLUGINS} ${INCLUDE_THIRD_PARTY_${PLATFORM_EXT}})
-
-# Targets declaration
- add_custom_target (plugins-all)
-
- string(TOLOWER ${PLATFORM_EXT} PLATFORM_L)
- set(TARGET_NAME plugins.${PLATFORM_L})
-
- function(declare_targets_for_build_mode BUILD_MODE)
-  set(TARGET_NAME ${BUILD_MODE_PREFIX_${BUILD_MODE}}.${TARGET_NAME})
-  set(DEFINES_PLUGINS ${DEFINES_PLUGINS} ${DEFINES_PLUGINS_${BUILD_MODE}})
-
-  # Jerry
-   add_library(${TARGET_NAME}.lib STATIC ${SOURCE_PLUGINS})
-   set_property(TARGET ${TARGET_NAME}.lib
-                PROPERTY COMPILE_FLAGS "${COMPILE_FLAGS_PLUGINS} ${FLAGS_COMMON_${BUILD_MODE}}")
-   target_compile_definitions(${TARGET_NAME}.lib PRIVATE ${DEFINES_PLUGINS})
-   target_include_directories(${TARGET_NAME}.lib PRIVATE ${INCLUDE_PLUGINS} ${INCLUDE_CORE_INTERFACE})
-   target_include_directories(${TARGET_NAME}.lib SYSTEM PRIVATE ${INCLUDE_LIBC_INTERFACE})
-   target_include_directories(${TARGET_NAME}.lib SYSTEM PRIVATE ${INCLUDE_EXTERNAL_LIBS_INTERFACE})
-   add_dependencies(plugins-all ${TARGET_NAME}.lib)
-
-  # Third-party MCU library
-   if(DEFINED SOURCE_THIRD_PARTY_${PLATFORM_EXT})
-    add_library(${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB} STATIC ${SOURCE_THIRD_PARTY_${PLATFORM_EXT}})
-    set_property(TARGET ${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB}
-                 PROPERTY COMPILE_FLAGS "${FLAGS_COMMON_${BUILD_MODE}}")
-    target_include_directories(${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB} PRIVATE ${INCLUDE_PLUGINS})
-    target_include_directories(${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB} SYSTEM PRIVATE ${INCLUDE_LIBC_INTERFACE})
-    target_include_directories(${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB} SYSTEM PRIVATE ${INCLUDE_EXTERNAL_LIBS_INTERFACE})
-
-    target_link_libraries(${TARGET_NAME}.lib ${TARGET_NAME}${SUFFIX_THIRD_PARTY_LIB})
-   endif()
- endfunction()
-
- declare_targets_for_build_mode(DEBUG)
- declare_targets_for_build_mode(RELEASE)
diff --git a/plugins/io/init.cpp b/plugins/io/init.cpp
deleted file mode 100644
index de44142580..0000000000
--- a/plugins/io/init.cpp
+++ /dev/null
@@ -1,64 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
-
-#include "init.h"
-#include "jerry.h"
-
-static void plugin_io_print_uint32 (uint32_t);
-static void plugin_io_print_string (jerry_api_string_t *string_p);
-
-#include "io-extension-description.inc.h"
-
-void
-plugin_io_init (void)
-{
-  jerry_extend_with (&jerry_extension);
-} /* plugin_io_init */
-
-/**
- * Print an uint32 number without new-line to standard output
- */
-static void
-plugin_io_print_uint32 (uint32_t num) /**< uint32 to print */
-{
-  printf ("%lu", num);
-} /* plugin_io_print_uint32 */
-
-/**
- * Print a string without new-line to standard output
- *
- * Note:
- *      Currently, only strings that require up to 32 bytes with zero character at the end, are supported.
- *      If string is too long for the function, then nothing will be printed.
- */
-static void
-plugin_io_print_string (jerry_api_string_t *string_p) /**< string to print */
-{
-  char buffer[32];
-
-  ssize_t req_size = jerry_api_string_to_char_buffer (string_p, buffer, (ssize_t) sizeof (buffer));
-
-  if (req_size < 0)
-  {
-    /* not enough buffer size */
-    return;
-  }
-  else
-  {
-    printf ("%s", buffer);
-  }
-} /* plugin_io_print_string */
diff --git a/plugins/io/init.h b/plugins/io/init.h
deleted file mode 100644
index cfc2ac634b..0000000000
--- a/plugins/io/init.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef INIT_H
-#define INIT_H
-
-extern void plugin_io_init (void);
-
-#endif /* INIT_H */
diff --git a/plugins/io/io-extension-description.inc.h b/plugins/io/io-extension-description.inc.h
deleted file mode 100644
index 46c52c4ea3..0000000000
--- a/plugins/io/io-extension-description.inc.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef IO_EXTENSION_DESCRIPTION_INC_H
-#define IO_EXTENSION_DESCRIPTION_INC_H
-
-#define EXTENSION_NAME "io"
-#define EXTENSION_DESCRIPTION_HEADER "io-extension-description.inc.h"
-
-#include "jerry-extension.inc.h"
-
-#endif /* IO_EXTENSION_DESCRIPTION_INC_H */
-
-#if defined (EXTENSION_FUNCTION)
-EXTENSION_FUNCTION (print_uint32, plugin_io_print_uint32,
-                    VOID,
-                    1,
-                    EXTENSION_ARG (0, UINT32))
-EXTENSION_FUNCTION (print_string, plugin_io_print_string,
-                    VOID,
-                    1,
-                    EXTENSION_ARG (0, STRING))
-#elif defined (EXTENSION_FIELD)
-#if defined (__TARGET_HOST)
-EXTENSION_FIELD (platform, STRING, "linux")
-#elif defined (__TARGET_MCU_STM32F3)
-EXTENSION_FIELD (platform, STRING, "mcu_stm32f3")
-#elif defined (__TARGET_MCU_STM32F4)
-EXTENSION_FIELD (platform, STRING, "mcu_stm32f4")
-#endif /* !__TARGET_MCU_STM32F3 && __TARGET_MCU_STM32F4 */
-#endif /* !EXTENSION_FUNCTION && !EXTENSION_FIELD */
diff --git a/plugins/lib-device-stm/actuators.cpp b/plugins/lib-device-stm/actuators.cpp
deleted file mode 100644
index bf3b5c120e..0000000000
--- a/plugins/lib-device-stm/actuators.cpp
+++ /dev/null
@@ -1,233 +0,0 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma GCC optimize "O0"
-
-#include <stdio.h>
-
-#include "actuators.h"
-#include "common-io.h"
-
-#if defined (__TARGET_HOST) || defined (__TARGET_NUTTX)
-/**
- * Host stub for LEDToggle operation
- */
-void
-led_toggle (uint32_t led_id) /**< index of LED */
-{
-  printf ("led_toggle: %lu\n", led_id);
-}
-
-/**
- * Host stub for LEDOn operation
- */
-void
-led_on (uint32_t led_id) /**< index of LED */
-{
-  printf ("led_on: %lu\n", led_id);
-}
-
-/**
- * Host stub for LEDOff operation
- */
-void
-led_off (uint32_t led_id) /**< index of LED */
-{
-  printf ("led_off: %lu\n", led_id);
-}
-
-/**
- * Host stub for LEDOnce operation
- */
-void
-led_blink_once (uint32_t led_id) /**< index of LED */
-{
-  printf ("led_blink_once: %lu\n", led_id);
-}
-#else /* !__TARGET_HOST && !__TARGET_NUTTX */
-#ifndef __TARGET_MCU
-# error "!__TARGET_HOST && && !__TARGET_NUTTX !__TARGET_MCU"
-#endif /* !__TARGET_MCU */
-
-#include "mcu-headers.h"
-
-#ifdef __TARGET_MCU_STM32F4
-/**
- * Number of LEDs on the board
- */
-#define LED_NUMBER 4
-
-/**
- * LEDs' GPIO pins
- */
-static const uint16_t led_pins[LED_NUMBER] =
-{
-  GPIO_Pin_12, /* LD4: Green */
-  GPIO_Pin_13, /* LD3: Orange */
-  GPIO_Pin_14, /* LD5: Red */
-  GPIO_Pin_15  /* LD6: Blue */
-};
-
-/**
- * LEDs' GPIO ports
- */
-static GPIO_TypeDef* leds_port = GPIOD;
-
-/**
- * Initialize LEDs on the board
- */
-void
-initialize_leds (void)
-{
-  GPIO_InitTypeDef gpio_init_structure;
-
-  RCC_AHB1PeriphClockCmd (RCC_AHB1Periph_GPIOD, ENABLE);
-
-  uint16_t led_pins_mask = 0;
-  for (uint32_t led_index = 0;
-       led_index < LED_NUMBER;
-       led_index++)
-  {
-    led_pins_mask |= led_pins[led_index];
-  }
-
-  gpio_init_structure.GPIO_Pin = led_pins_mask;
-  gpio_init_structure.GPIO_Mode = GPIO_Mode_OUT;
-  gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
-  GPIO_Init (leds_port, &gpio_init_structure);
-
-  for (uint32_t led_index = 0;
-       led_index < LED_NUMBER;
-       led_index++)
-  {
-    led_off (led_index);
-  }
-} /* initialize_leds */
-
-#else /* !__TARGET_MCU_STM32F4 */
-
-# ifndef __TARGET_MCU_STM32F3
-#  error "!__TARGET_MCU_STM32F4 && !__TARGET_MCU_STM32F3"
-# endif /* !__TARGET_MCU_STM32F3 */
-
-/**
- * Number of LEDs on the board
- */
-#define LED_NUMBER 8
-
-/**
- * LEDs' GPIO pins
- */
-static const uint16_t led_pins[LED_NUMBER] =
-{
-  GPIO_Pin_15, /* LD6  - Green */
-  GPIO_Pin_14, /* LD8  - Orange */
-  GPIO_Pin_13, /* LD10 - Red */
-  GPIO_Pin_12, /* LD9  - Blue */
-  GPIO_Pin_11, /* LD7  - Green */
-  GPIO_Pin_10, /* LD5  - Orange */
-  GPIO_Pin_9,  /* LD3  - Red */
-  GPIO_Pin_8   /* LD4  - Blue */
-};
-
-/**
- * LEDs' GPIO ports
- */
-static GPIO_TypeDef* leds_port = GPIOE;
-
-/**
- * Initialize LEDs on the board
- */
-void
-initialize_leds (void)
-{
-  GPIO_InitTypeDef gpio_init_structure;
-
-  RCC_AHBPeriphClockCmd (RCC_AHBPeriph_GPIOE, ENABLE);
-
-  uint16_t led_pins_mask = 0;
-  for (uint32_t led_index = 0;
-       led_index < LED_NUMBER;
-       led_index++)
-  {
-    led_pins_mask |= led_pins[led_index];
-  }
-
-  gpio_init_structure.GPIO_Pin = led_pins_mask;
-  gpio_init_structure.GPIO_Mode = GPIO_Mode_OUT;
-  gpio_init_structure.GPIO_OType = GPIO_OType_PP;
-  gpio_init_structure.GPIO_PuPd = GPIO_PuPd_UP;
-  gpio_init_structure.GPIO_Speed = GPIO_Speed_50MHz;
-  GPIO_Init (leds_port, &gpio_init_structure);
-
-  for (uint32_t led_index = 0;
-       led_index < LED_NUMBER;
-       led_index++)
-  {
-    led_off (led_index);
-  }
-} /* initialize_leds */
-#endif /* !__TARGET_MCU_STM32F4 && __TARGET_MCU_STM32F3 */
-
-/**
- * Toggle specified LED
- */
-void
-led_toggle (uint32_t led_id) /**< index of LED */
-{
-  if (led_id < LED_NUMBER)
-  {
-    leds_port->ODR ^= led_pins[led_id];
-  }
-} /* led_toggle */
-
-/**
- * Turn specified LED on
- */
-void
-led_on (uint32_t led_id) /**< index of LED */
-{
-  if (led_id < LED_NUMBER)
-  {
-    GPIO_WriteBit (leds_port, led_pins[led_id], Bit_SET);
-  }
-} /* led_on */
-
-/**
- * Turn specified LED off
- */
-void
-led_off (uint32_t led_id) /**< index of LED */
-{
-  if (led_id < LED_NUMBER)
-  {
-    GPIO_WriteBit (leds_port, led_pins[led_id], Bit_RESET);
-  }
-} /* led_off */
-
-/**
- * Blink once with specified LED
- */
-void
-led_blink_once (uint32_t led_id) /**< index of LED */
-{
-  uint32_t dot = 300;
-
-  led_on (led_id);
-  wait_ms (dot);
-  led_off (led_id);
-} /* led_blink_once */
-
-#endif /* !__TARGET_HOST && !__TARGET_NUTTX && __TARGET_MCU */
diff --git a/plugins/lib-device-stm/actuators.h b/plugins/lib-device-stm/actuators.h
deleted file mode 100644
index 01dbc70cc6..0000000000
--- a/plugins/lib-device-stm/actuators.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ACTUATORS_H
-#define ACTUATORS_H
-
-#include <stdint.h>
-
-void led_toggle (uint32_t);
-void led_on (uint32_t);
-void led_off (uint32_t);
-void led_blink_once (uint32_t);
-
-#ifdef __TARGET_MCU
-void initialize_leds (void);
-#endif
-
-#endif /* ACTUATORS_H */
-
diff --git a/plugins/lib-device-stm/common-io.cpp b/plugins/lib-device-stm/common-io.cpp
deleted file mode 100644
index fab2647629..0000000000
--- a/plugins/lib-device-stm/common-io.cpp
+++ /dev/null
@@ -1,165 +0,0 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma GCC optimize "O0"
-
-#include <stdio.h>
-
-#include "actuators.h"
-#include "common-io.h"
-
-#include "mcu-headers.h"
-
-int
-digital_read (uint32_t arg1, uint32_t arg2)
-{
-  (void) arg1;
-  (void) arg2;
-
-  return 0;
-}
-
-void
-digital_write (uint32_t arg1, uint32_t arg2)
-{
-  (void) arg1;
-  (void) arg2;
-}
-
-int
-analog_read (uint32_t arg1, uint32_t arg2)
-{
-  (void) arg1;
-  (void) arg2;
-
-  return 0;
-}
-
-void
-analog_write (uint32_t arg1, uint32_t arg2)
-{
-  (void) arg1;
-  (void) arg2;
-}
-
-#if defined (__TARGET_HOST) || defined (__TARGET_NUTTX)
-void
-wait_ms (uint32_t time_ms)
-{
-  printf ("wait_ms: %lu\n", time_ms);
-}
-#else /* !__TARGET_HOST */
-
-#ifndef __TARGET_MCU
-# error "!__TARGET_HOST && && !__TARGET_NUTTX !__TARGET_MCU"
-#endif /* !__TARGET_MCU */
-
-static __IO uint32_t sys_tick_counter;
-
-void
-initialize_sys_tick (void)
-{
-  /****************************************
-   *SystemFrequency/1000      1ms         *
-   *SystemFrequency/100000    10us        *
-   *SystemFrequency/1000000   1us         *
-   *****************************************/
-  while (SysTick_Config (SystemCoreClock / 1000000) != 0)
-  {
-  } // One SysTick interrupt now equals 1us
-
-}
-
-void
-set_sys_tick_counter (uint32_t set_value)
-{
-  sys_tick_counter = set_value;
-}
-
-uint32_t
-get_sys_tick_counter (void)
-{
-  return sys_tick_counter;
-}
-
-void
-SysTick_Handler (void)
-{
-  time_tick_decrement ();
-}
-
-void
-time_tick_decrement (void)
-{
-  if (sys_tick_counter != 0x00)
-  {
-    sys_tick_counter --;
-  }
-}
-
-void
-wait_1ms (void)
-{
-  sys_tick_counter = 1000;
-  while (sys_tick_counter != 0)
-  {
-  }
-}
-
-void
-wait_ms (uint32_t time_ms)
-{
-  while (time_ms --)
-  {
-    wait_1ms ();
-  }
-}
-
-void
-fake_exit (void)
-{
-  uint32_t pin = LED_ORANGE;
-  volatile int index;
-
-  int dot = 600000;
-  int dash = dot * 3;
-
-  while (1)
-  {
-    led_on (pin);
-    for (index = 0; index < dot; index ++)
-    {
-    };
-    led_off (pin);
-    for (index = 0; index < dash; index ++)
-    {
-    };
-  }
-}
-void
-initialize_timer ()
-{
-  RCC_APB1PeriphClockCmd (RCC_APB1Periph_TIM2, ENABLE);
-
-  TIM_TimeBaseInitTypeDef timerInitStructure;
-  timerInitStructure.TIM_Prescaler = 40000;
-  timerInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
-  timerInitStructure.TIM_Period = 500;
-  timerInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
-  timerInitStructure.TIM_RepetitionCounter = 0;
-  TIM_TimeBaseInit (TIM2, &timerInitStructure);
-  TIM_Cmd (TIM2, ENABLE);
-}
-#endif /* !__TARGET_HOST && !__TARGET_NUTTX && __TARGET_MCU */
diff --git a/plugins/lib-device-stm/common-io.h b/plugins/lib-device-stm/common-io.h
deleted file mode 100644
index 646b76e61e..0000000000
--- a/plugins/lib-device-stm/common-io.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef COMMON_IO_H
-#define COMMON_IO_H
-
-#include <stdint.h>
-
-int digital_read (uint32_t, uint32_t);
-void digital_write (uint32_t, uint32_t);
-
-int analog_read (uint32_t, uint32_t);
-void analog_write (uint32_t, uint32_t);
-
-void wait_ms (uint32_t);
-
-#ifdef __TARGET_MCU
-void fake_exit (void);
-
-void initialize_timer (void);
-void initialize_sys_tick (void);
-void SysTick_Handler (void);
-
-void time_tick_decrement (void);
-void wait_1ms (void);
-
-void set_sys_tick_counter (uint32_t);
-uint32_t get_sys_tick_counter (void);
-#endif
-
-#endif /* COMMON_IO_H */
-
diff --git a/plugins/lib-device-stm/init.cpp b/plugins/lib-device-stm/init.cpp
deleted file mode 100644
index 43cec67788..0000000000
--- a/plugins/lib-device-stm/init.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "actuators.h"
-#include "common-io.h"
-#include "init.h"
-
-void
-plugin_device_stm_init (void)
-{
-#if defined (__TARGET_MCU_STM32F3) || defined (__TARGET_MCU_STM32F4)
-  initialize_sys_tick ();
-  initialize_leds ();
-  initialize_timer ();
-#endif /* __TARGET_MCU_STM32F3 || __TARGET_MCU_STM32F4 */
-} /* plugin_device_stm_init */
diff --git a/plugins/lib-device-stm/init.h b/plugins/lib-device-stm/init.h
deleted file mode 100644
index ca7ea4f39f..0000000000
--- a/plugins/lib-device-stm/init.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* Copyright 2015 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef INIT_H
-#define INIT_H
-
-extern void plugin_device_stm_init (void);
-
-#endif /* INIT_H */
diff --git a/plugins/lib-device-stm/mcu-headers.h b/plugins/lib-device-stm/mcu-headers.h
deleted file mode 100644
index 28b7ce92b7..0000000000
--- a/plugins/lib-device-stm/mcu-headers.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MCU_HEADERS_H
-#define MCU_HEADERS_H
-
-#ifdef __TARGET_MCU
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wpedantic"
-#pragma GCC diagnostic ignored "-Wsign-conversion"
-# ifdef __TARGET_MCU_STM32F4
-#  include "stm32f4xx_conf.h"
-#  include "stm32f4xx.h"
-
-#  define LED_GREEN      0
-#  define LED_ORANGE     1
-#  define LED_RED        2
-#  define LED_BLUE       3
-# elif defined (__TARGET_MCU_STM32F3)
-#  include "stm32f30x_conf.h"
-#  include "stm32f30x.h"
-
-#  define LED_GREEN      0
-#  define LED_ORANGE     1
-#  define LED_RED        2
-#  define LED_BLUE       3
-# else /* !__TARGET_MCU_STM32F4 && !__TARGET_MCU_STM32F3 */
-#  error "!__TARGET_MCU_STM32F4 && !__TARGET_MCU_STM32F3"
-# endif /* !__TARGET_MCU_STM32F4 && !__TARGET_MCU_STM32F3 */
-#pragma GCC diagnostic pop
-#endif /* __TARGET_MCU */
-
-#endif /* !MCU_HEADERS_H */
diff --git a/tests/jerry/extensions.js b/tests/jerry/extensions.js
deleted file mode 100644
index 10ccea156c..0000000000
--- a/tests/jerry/extensions.js
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2015 Samsung Electronics Co., Ltd.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// TODO: Test other field types
-// TODO: Test functions
-
-assert(Jerry.io.platform === "linux");
-
-Jerry.io.print_uint32 (1);
-Jerry.io.print_string (Jerry.io.platform);
-
-try
-{
-  // Argument type mismatch
-  Jerry.io.print_uint32 ('1');
-
-  assert (false);
-}
-catch (e)
-{
-  assert (e instanceof TypeError);
-}
-
-try
-{
-  // Argument type mismatch
-  Jerry.io.print_string (1);
-
-  assert (false);
-}
-catch (e)
-{
-  assert (e instanceof TypeError);
-}