xref: /linux/drivers/staging/media/atomisp/pci/hive_isp_css_include/assert_support.h (revision 3fd6c59042dbba50391e30862beac979491145fe)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Support for Intel Camera Imaging ISP subsystem.
4  * Copyright (c) 2015, Intel Corporation.
5  */
6 
7 #ifndef __ASSERT_SUPPORT_H_INCLUDED__
8 #define __ASSERT_SUPPORT_H_INCLUDED__
9 
10 /* Compile time assertion */
11 #ifndef CT_ASSERT
12 #define CT_ASSERT(cnd) ((void)sizeof(char[(cnd) ? 1 :  -1]))
13 #endif /* CT_ASSERT */
14 
15 #include <linux/bug.h>
16 
17 /* TODO: it would be cleaner to use this:
18  * #define assert(cnd) BUG_ON(cnd)
19  * but that causes many compiler warnings (==errors) under Android
20  * because it seems that the BUG_ON() macro is not seen as a check by
21  * gcc like the BUG() macro is.
22  */
23 #define assert(cnd) \
24 	do { \
25 		if (!(cnd)) \
26 			BUG(); \
27 	} while (0)
28 
29 #ifndef PIPE_GENERATION
30 /* Deprecated OP___assert, this is still used in ~1000 places
31  * in the code. This will be removed over time.
32  * The implementation for the pipe generation tool is in see support.isp.h
33  */
34 #define OP___assert(cnd) assert(cnd)
35 
compile_time_assert(unsigned int cond)36 static inline void compile_time_assert(unsigned int cond)
37 {
38 	/* Call undefined function if cond is false */
39 	void _compile_time_assert(void);
40 	if (!cond) _compile_time_assert();
41 }
42 #endif /* PIPE_GENERATION */
43 
44 #endif /* __ASSERT_SUPPORT_H_INCLUDED__ */
45