1*f80ad8b4SAndroid Build Coastguard Worker /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*f80ad8b4SAndroid Build Coastguard Worker /* const.h: Macros for dealing with constants. */ 3*f80ad8b4SAndroid Build Coastguard Worker 4*f80ad8b4SAndroid Build Coastguard Worker #ifndef _UAPI_LINUX_CONST_H 5*f80ad8b4SAndroid Build Coastguard Worker #define _UAPI_LINUX_CONST_H 6*f80ad8b4SAndroid Build Coastguard Worker 7*f80ad8b4SAndroid Build Coastguard Worker /* Some constant macros are used in both assembler and 8*f80ad8b4SAndroid Build Coastguard Worker * C code. Therefore we cannot annotate them always with 9*f80ad8b4SAndroid Build Coastguard Worker * 'UL' and other type specifiers unilaterally. We 10*f80ad8b4SAndroid Build Coastguard Worker * use the following macros to deal with this. 11*f80ad8b4SAndroid Build Coastguard Worker * 12*f80ad8b4SAndroid Build Coastguard Worker * Similarly, _AT() will cast an expression with a type in C, but 13*f80ad8b4SAndroid Build Coastguard Worker * leave it unchanged in asm. 14*f80ad8b4SAndroid Build Coastguard Worker */ 15*f80ad8b4SAndroid Build Coastguard Worker 16*f80ad8b4SAndroid Build Coastguard Worker #ifdef __ASSEMBLY__ 17*f80ad8b4SAndroid Build Coastguard Worker #define _AC(X,Y) X 18*f80ad8b4SAndroid Build Coastguard Worker #define _AT(T,X) X 19*f80ad8b4SAndroid Build Coastguard Worker #else 20*f80ad8b4SAndroid Build Coastguard Worker #define __AC(X,Y) (X##Y) 21*f80ad8b4SAndroid Build Coastguard Worker #define _AC(X,Y) __AC(X,Y) 22*f80ad8b4SAndroid Build Coastguard Worker #define _AT(T,X) ((T)(X)) 23*f80ad8b4SAndroid Build Coastguard Worker #endif 24*f80ad8b4SAndroid Build Coastguard Worker 25*f80ad8b4SAndroid Build Coastguard Worker #define _UL(x) (_AC(x, UL)) 26*f80ad8b4SAndroid Build Coastguard Worker #define _ULL(x) (_AC(x, ULL)) 27*f80ad8b4SAndroid Build Coastguard Worker 28*f80ad8b4SAndroid Build Coastguard Worker #define _BITUL(x) (_UL(1) << (x)) 29*f80ad8b4SAndroid Build Coastguard Worker #define _BITULL(x) (_ULL(1) << (x)) 30*f80ad8b4SAndroid Build Coastguard Worker 31*f80ad8b4SAndroid Build Coastguard Worker #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1) 32*f80ad8b4SAndroid Build Coastguard Worker #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) 33*f80ad8b4SAndroid Build Coastguard Worker 34*f80ad8b4SAndroid Build Coastguard Worker #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) 35*f80ad8b4SAndroid Build Coastguard Worker 36*f80ad8b4SAndroid Build Coastguard Worker #endif /* _UAPI_LINUX_CONST_H */ 37