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/*

 *  The PCI Library -- System-Dependent Stuff

 *

 *  Copyright (c) 1997--2004 Martin Mares <mj@ucw.cz>

 *

 *  May 8, 2006 - Modified and ported to HelenOS by Jakub Jermar.

 *

 *  Can be freely distributed and used under the terms of the GNU GPL.

 */

#ifdef __GNUC__

#define UNUSED __attribute__((unused))

#define NONRET __attribute__((noreturn))

#else

#define UNUSED

#define NONRET

#define inline

#endif

typedef u8 byte;

typedef u16 word;

static inline void swap(u8 *x, u8 *y)

{

    u8 z = *x;

    *x = *y;

    *y = z;

}

static inline u16 invert_endianess_16(u16 x)

{

    u8 *px = (u8 *)&x;

    swap(&px[0], &px[1]);

    return x;

}

static inline u32 invert_endianess_32(u32 x)

{

    u8 *px = (u8 *)&x;

    swap(&px[0], &px[3]);

    swap(&px[1], &px[2]);

    return x;

}

#ifdef UARCH_sparc64

    #define cpu_to_le16(x) (invert_endianess_16(x))

    #define cpu_to_le32(x) (invert_endianess_32(x))

    #define le16_to_cpu(x) (invert_endianess_16(x))

    #define le32_to_cpu(x) (invert_endianess_32(x))

#else

    #define cpu_to_le16(x) (x)

    #define cpu_to_le32(x) (x)

    #define le16_to_cpu(x) (x)

    #define le32_to_cpu(x) (x)

#endif