1#ifndef _PPC64_BYTEORDER_H
2#define _PPC64_BYTEORDER_H
3
4/*
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 */
10
11#include <asm/types.h>
12
13#ifdef __GNUC__
14
15static __inline__ __u16 ld_le16(const volatile __u16 *addr)
16{
17	__u16 val;
18
19	__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
20	return val;
21}
22
23static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
24{
25	__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
26}
27
28static __inline__ __u32 ld_le32(const volatile __u32 *addr)
29{
30	__u32 val;
31
32	__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
33	return val;
34}
35
36static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
37{
38	__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
39}
40
41
42/* The same, but returns converted value from the location pointer by addr. */
43#define __arch__swab16p(addr) ld_le16(addr)
44#define __arch__swab32p(addr) ld_le32(addr)
45
46/* The same, but do the conversion in situ, ie. put the value back to addr. */
47#define __arch__swab16s(addr) st_le16(addr,*addr)
48#define __arch__swab32s(addr) st_le32(addr,*addr)
49
50#endif /* __GNUC__ */
51
52/* MIKEC: What does __BYTEORDER_HAS_U64__ mean? */
53#ifndef __STRICT_ANSI__
54#define __BYTEORDER_HAS_U64__
55#endif
56
57#include <linux/byteorder/big_endian.h>
58
59#endif /* _PPC64_BYTEORDER_H */
60