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1a29ef8e97
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19815 3c298f89-4303-0410-b956-a3cf2f4a3e73
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/*
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* arch/ubicom32/include/asm/segment.h
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* Memory segment definitions for Ubicom32 architecture.
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*
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* (C) Copyright 2009, Ubicom, Inc.
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*
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* This file is part of the Ubicom32 Linux Kernel Port.
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*
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* The Ubicom32 Linux Kernel Port is free software: you can redistribute
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* it and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Ubicom32 Linux Kernel Port is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Ubicom32 Linux Kernel Port. If not,
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* see <http://www.gnu.org/licenses/>.
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*
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* Ubicom32 implementation derived from (with many thanks):
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* arch/m68knommu
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* arch/blackfin
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* arch/parisc
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*/
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#ifndef _ASM_UBICOM32_SEGMENT_H
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#define _ASM_UBICOM32_SEGMENT_H
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/* define constants */
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/* Address spaces (FC0-FC2) */
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#define USER_DATA (1)
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#ifndef __USER_DS
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#define __USER_DS (USER_DATA)
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#endif
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#define USER_PROGRAM (2)
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#define SUPER_DATA (5)
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#ifndef __KERNEL_DS
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#define __KERNEL_DS (SUPER_DATA)
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#endif
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#define SUPER_PROGRAM (6)
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#define CPU_SPACE (7)
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#ifndef __ASSEMBLY__
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typedef struct {
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unsigned long seg;
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} mm_segment_t;
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#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
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#define USER_DS MAKE_MM_SEG(__USER_DS)
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#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS)
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/*
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* Get/set the SFC/DFC registers for MOVES instructions
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*/
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static inline mm_segment_t get_fs(void)
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{
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return USER_DS;
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}
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static inline mm_segment_t get_ds(void)
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{
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/* return the supervisor data space code */
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return KERNEL_DS;
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}
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static inline void set_fs(mm_segment_t val)
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{
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}
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#define segment_eq(a,b) ((a).seg == (b).seg)
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_UBICOM32_SEGMENT_H */
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