/root/src/xen/xen/include/xen/const.h

Source
/* const.h: Macros for dealing with constants.  */

#ifndef __XEN_CONST_H__
#define __XEN_CONST_H__

/* Some constant macros are used in both assembler and
 * C code.  Therefore we cannot annotate them always with
 * 'UL' and other type specifiers unilaterally.  We
 * use the following macros to deal with this.
 *
 * Similarly, _AT() will cast an expression with a type in C, but
 * leave it unchanged in asm.
 */

#ifdef __ASSEMBLY__
#define _AC(X,Y)  X
#define _AT(T,X)  X
#else
#define __AC(X,Y) (X##Y)
#define _AC(X,Y)  __AC(X,Y)
#define _AT(T,X)  ((T)(X))
#endif

#endif /* __XEN_CONST_H__ */

Coverage Report

Created: 2017-10-25 09:10

Line	Count	Source
1		/* const.h: Macros for dealing with constants. */
2
3		#ifndef __XEN_CONST_H__
4		#define __XEN_CONST_H__
5
6		/* Some constant macros are used in both assembler and
7		* C code. Therefore we cannot annotate them always with
8		* 'UL' and other type specifiers unilaterally. We
9		* use the following macros to deal with this.
10		*
11		* Similarly, _AT() will cast an expression with a type in C, but
12		* leave it unchanged in asm.
13		*/
14
15		#ifdef __ASSEMBLY__
16		#define _AC(X,Y) X
17		#define _AT(T,X) X
18		#else
19	1.53G	#define __AC(X,Y) (X##Y)
20	1.53G	#define _AC(X,Y) __AC(X,Y)
21		#define _AT(T,X) ((T)(X))
22		#endif
23
24		#endif /* __XEN_CONST_H__ */