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#ifndef _OR32_SEGMENT_H
#define _OR32_SEGMENT_H
 
/* define constants */
/* Address spaces (FC0-FC2) */
#define USER_DATA     (1)
#ifndef USER_DS
#define USER_DS       (USER_DATA)
#endif
#define USER_PROGRAM  (2)
#define SUPER_DATA    (5)
#ifndef KERNEL_DS
#define KERNEL_DS     (SUPER_DATA)
#endif
#define SUPER_PROGRAM (6)
#define CPU_SPACE     (7)
 
#ifndef __ASSEMBLY__
 
/*
 * Uh, these should become the main single-value transfer routines..
 * They automatically use the right size if we just have the right
 * pointer type..
 */
#define put_user(x,ptr) __put_user((unsigned long)(x),(ptr),sizeof(*(ptr)))
#define get_user(ptr) ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr))))
 
/*
 * This is a silly but good way to make sure that
 * the __put_user function is indeed always optimized,
 * and that we use the correct sizes..
 */
extern int bad_user_access_length(void);
 
#define __ptr(x) ((unsigned long *)(x))
 
static inline void __put_user(unsigned long x, void * y, int size)
{
	switch (size) {
                case 1:
                        *(char *) y = x;
                        break;
                case 2:
                        *(short *) y = x;
                        break;
                case 4:
                        *(int *) y = x;
                        break;
                case 8:
                        *(long *) y = x;
                        break;
                default:
                        bad_user_access_length();
        }
}
 
static inline unsigned long __get_user(const void * y, int size)
{
        switch (size) {
                case 1:
                        return *(unsigned char *) y;
                case 2:
                        return *(unsigned short *) y;
                case 4:
                        return *(unsigned int *) y;
                case 8:
                        return *(unsigned long *) y;
                default:
                        return bad_user_access_length();
        }
}
#undef __ptr
 
/*
 * These are deprecated..
 *
 * Use "put_user()" and "get_user()" with the proper pointer types instead.
 */
 
#define get_fs_byte(addr) __get_user((const unsigned char *)(addr),1)
#define get_fs_word(addr) __get_user((const unsigned short *)(addr),2)
#define get_fs_long(addr) __get_user((const unsigned int *)(addr),4)
 
#define put_fs_byte(x,addr) __put_user((x),(unsigned char *)(addr),1)
#define put_fs_word(x,addr) __put_user((x),(unsigned short *)(addr),2)
#define put_fs_long(x,addr) __put_user((x),(unsigned int *)(addr),4)
 
#ifdef WE_REALLY_WANT_TO_USE_A_BROKEN_INTERFACE
 
static inline unsigned char get_user_byte(const char * addr)
{
	return __get_user(addr,1);
}
 
static inline unsigned short get_user_word(const short *addr)
{
	return __get_user(addr,2);
}
 
static inline unsigned long get_user_long(const int *addr)
{
	return __get_user(addr,4);
}
 
static inline void put_user_byte(char val,char *addr)
{
	__put_user(val, addr, 1);
}
 
static inline void put_user_word(short val,short * addr)
{
	__put_user(val, addr, 2);
}
 
static inline void put_user_long(unsigned long val,int * addr)
{
	__put_user(val, addr, 4);
}
 
#endif
 
#define put_fs_quad(x,addr) put_user_quad((x),(long *)(addr))
 
#define memcpy_fromfs(to, from, n) memcpy((to),(from),(n))
 
#define memcpy_tofs(to, from, n) memcpy((to),(from),(n)) 
 
/*
 * Get/set the SFC/DFC registers for MOVES instructions
 */
 
static inline unsigned long get_fs(void)
{
	return USER_DS;
}
 
static inline unsigned long get_ds(void)
{
    /* return the supervisor data space code */
    return KERNEL_DS;
}
 
static inline void set_fs(unsigned long val)
{
}
 
#endif /* __ASSEMBLY__ */
 
#endif /* _OR32_SEGMENT_H */