nuttx/libs/libc/machine/arm/aeabi_atexit.c
Ville Juven 622677d4a1 libc: Implement exit, atexit, on_exit and cxa_exit on the user side
For CONFIG_BUILD_KERNEL using the sched/task/task_exithook implementation
will just not work. It calls user code with kernel privileges which is
a bit of a security issue.
2022-05-25 15:28:43 +08:00

52 lines
2.1 KiB
C

/****************************************************************************
* libs/libc/machine/arm/aeabi_atexit.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/compiler.h>
#include <nuttx/atexit.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: __aeabi_atexit
*
* Description:
* Registers static object destructors. Normally atexit(f) should call
* __aeabi_atexit (NULL, f, NULL). But in the usage model here, static
* constructors are initialized at power up and are never destroyed
* because they have global scope and must persist for as long as the
* embedded device is powered on.
*
****************************************************************************/
int weak_function __aeabi_atexit(void *object,
void (*func)(void *),
void *dso_handle)
{
return atexit_register(ATTYPE_CXA, (void (*)(void))func, object,
dso_handle);
}