1  /* SPDX-License-Identifier: GPL-2.0 */
2  /*
3   * Support for Intel Camera Imaging ISP subsystem.
4   * Copyright (c) 2015, Intel Corporation.
5   *
6   * This program is free software; you can redistribute it and/or modify it
7   * under the terms and conditions of the GNU General Public License,
8   * version 2, as published by the Free Software Foundation.
9   *
10   * This program is distributed in the hope it will be useful, but WITHOUT
11   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13   * more details.
14   */
15  
16  #ifndef __ASSERT_SUPPORT_H_INCLUDED__
17  #define __ASSERT_SUPPORT_H_INCLUDED__
18  
19  /* Compile time assertion */
20  #ifndef CT_ASSERT
21  #define CT_ASSERT(cnd) ((void)sizeof(char[(cnd) ? 1 :  -1]))
22  #endif /* CT_ASSERT */
23  
24  #include <linux/bug.h>
25  
26  /* TODO: it would be cleaner to use this:
27   * #define assert(cnd) BUG_ON(cnd)
28   * but that causes many compiler warnings (==errors) under Android
29   * because it seems that the BUG_ON() macro is not seen as a check by
30   * gcc like the BUG() macro is.
31   */
32  #define assert(cnd) \
33  	do { \
34  		if (!(cnd)) \
35  			BUG(); \
36  	} while (0)
37  
38  #ifndef PIPE_GENERATION
39  /* Deprecated OP___assert, this is still used in ~1000 places
40   * in the code. This will be removed over time.
41   * The implementation for the pipe generation tool is in see support.isp.h
42   */
43  #define OP___assert(cnd) assert(cnd)
44  
compile_time_assert(unsigned int cond)45  static inline void compile_time_assert(unsigned int cond)
46  {
47  	/* Call undefined function if cond is false */
48  	void _compile_time_assert(void);
49  	if (!cond) _compile_time_assert();
50  }
51  #endif /* PIPE_GENERATION */
52  
53  #endif /* __ASSERT_SUPPORT_H_INCLUDED__ */
54