rt-thread/components/lwp/syscall_data.h

32 lines
994 B
C
Raw Normal View History

/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-11-10 RT-Thread The first version
*/
#ifndef __SYSCALL_DATA_H__
#define __SYSCALL_DATA_H__
#include <rtthread.h>
/**
* @brief signature for syscall, used to locate syscall metadata.
*
* We don't allocate an exclusive section in ELF like Linux do
* to avoid initializing necessary data by iterating that section,
* which increases system booting time. We signature a pointer
* just below each syscall entry in syscall table to make it
* easy to locate every syscall's metadata by using syscall id.
*
* TODO Currently this adds a dummy pointer to syscall name.
* After adding metadata of every syscalls in front of their definition,
* this should be replaced by a pointer to that structure
*/
#define SYSCALL_SIGN(func) \
(void *)func, \
RT_STRINGIFY(func)
#endif /* __SYSCALL_DATA_H__ */