u-boot/arch/mips/include/asm/const.h
Daniel Schwierzeck 898582bdee MIPS: fix SPDX license identifier in remaining arch header files
Add a SPDX license identifier to MIPS header files where it is
still missing.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2016-01-16 21:06:46 +01:00

31 lines
715 B
C

/*
* const.h: Macros for dealing with constants.
*
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef _LINUX_CONST_H
#define _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 _BITUL(x) (_AC(1,UL) << (x))
#define _BITULL(x) (_AC(1,ULL) << (x))
#endif /* !(_LINUX_CONST_H) */