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/*

 * Copyright (C) 2009 Bahadir Bilgehan Balban

 */

#ifndef __ARM_UTCB_H__

#define __ARM_UTCB_H__

#define USER_UTCB_REF           0xFF000050

#define L4_KIP_ADDRESS          0xFF000000

#define UTCB_KIP_OFFSET         0x50

#ifndef __ASSEMBLY__

#include <l4lib/types.h>

#include <l4/macros.h>

#include <l4/lib/math.h>

#include INC_GLUE(message.h)

#include INC_GLUE(memory.h)

#include <string.h>

#include <stdio.h>

#include L4LIB_INC_SUBARCH(utcb.h)

/*

 * See kernel glue/arch/message.h for utcb details

 */

extern struct kip *kip;

/* Functions to read/write utcb registers */

static inline unsigned int read_mr(int offset)

{

        if (offset < MR_TOTAL)

                return l4_get_utcb()->mr[offset];

        else

                return l4_get_utcb()->mr_rest[offset - MR_TOTAL];

}

static inline void write_mr(unsigned int offset, unsigned int val)

{

        if (offset < MR_TOTAL)

                l4_get_utcb()->mr[offset] = val;

        else

                l4_get_utcb()->mr_rest[offset - MR_TOTAL] = val;

}

static inline void *utcb_full_buffer()

{

        return &l4_get_utcb()->mr_rest[0];

}

static inline char *utcb_full_strcpy_from(const char *src)

{

        return strncpy((char *)&l4_get_utcb()->mr_rest[0], src,

                       L4_UTCB_FULL_BUFFER_SIZE);

}

static inline void *utcb_full_memcpy_from(const char *src, int size)

{

        return memcpy(&l4_get_utcb()->mr_rest[0], src,

                      min(size, L4_UTCB_FULL_BUFFER_SIZE));

}

static inline char *utcb_full_strcpy_to(char *dst)

{

        return strncpy(dst, (char *)&l4_get_utcb()->mr_rest[0],

                       L4_UTCB_FULL_BUFFER_SIZE);

}

static inline void *utcb_full_memcpy_to(char *dst, int size)

{

        return memcpy(dst, &l4_get_utcb()->mr_rest[0],

                      min(size, L4_UTCB_FULL_BUFFER_SIZE));

}

#endif /* !__ASSEMBLY__ */

#endif /* __ARM_UTCB_H__ */