You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
803 B
31 lines
803 B
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
|
/* const.h: Macros for dealing with constants. */ |
|
|
|
#ifndef _UAPI_LINUX_CONST_H |
|
#define _UAPI_LINUX_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 |
|
|
|
#define _UL(x) (_AC(x, UL)) |
|
#define _ULL(x) (_AC(x, ULL)) |
|
|
|
#define _BITUL(x) (_UL(1) << (x)) |
|
#define _BITULL(x) (_ULL(1) << (x)) |
|
|
|
#endif /* _UAPI_LINUX_CONST_H */
|
|
|