35 lines
839 B
C
35 lines
839 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _LINUX_CONST_H
|
|
#define _LINUX_CONST_H
|
|
|
|
/* const.h: Macros for dealing with constants. */
|
|
|
|
/* 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
|
|
|
|
#define _UL(x) (_AC(x, UL))
|
|
#define _ULL(x) (_AC(x, ULL))
|
|
|
|
#define _BITUL(x) (_UL(1) << (x))
|
|
#define _BITULL(x) (_ULL(1) << (x))
|
|
|
|
#define UL(x) (_UL(x))
|
|
#define ULL(x) (_ULL(x))
|
|
|
|
#endif /* _LINUX_CONST_H */
|