/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_SH_SEGMENT_H #define __ASM_SH_SEGMENT_H #ifndef __ASSEMBLY__ typedef struct { unsigned long seg; } mm_segment_t; #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) /* * The fs value determines whether argument validity checking should be * performed or not. If get_fs() == USER_DS, checking is performed, with * get_fs() == KERNEL_DS, checking is bypassed. * * For historical reasons, these macros are grossly misnamed. */ #define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFFUL) #ifdef CONFIG_MMU #define USER_DS MAKE_MM_SEG(PAGE_OFFSET) #else #define USER_DS KERNEL_DS #endif #define segment_eq(a, b) ((a).seg == (b).seg) #define get_ds() (KERNEL_DS) #define get_fs() (current_thread_info()->addr_limit) #define set_fs(x) (current_thread_info()->addr_limit = (x)) #endif /* __ASSEMBLY__ */ #endif /* __ASM_SH_SEGMENT_H */