/*
 * Copyright (C) 2017-2019 Alibaba Group Holding Limited. All rights reserved.
 *
 * 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.
 */

/******************************************************************************
 * @file     _init.c
 * @brief    source file for c++ init & uninit
 * @version  V1.0
 * @date     24. April 2019
 ******************************************************************************/

#include <csi_config.h>
#include <string.h>

#ifndef CPP_WEAK
#define CPP_WEAK    __attribute__((weak))
#endif

extern int __dtor_end__;
extern int __ctor_end__;
extern int __ctor_start__;

typedef void (*func_ptr) (void);

CPP_WEAK void _init(void)
{
    func_ptr *p;
    for (p = (func_ptr *)&__ctor_end__ - 1; p >= (func_ptr *)&__ctor_start__; p--) {
        (*p) ();
    }
}

CPP_WEAK void _fini(void)
{
    func_ptr *p;
    for (p = (func_ptr *)&__ctor_end__; p <= (func_ptr *)&__dtor_end__ - 1; p++) {
        (*p) ();
    }
}