1#ifndef _S390_BYTEORDER_H
2#define _S390_BYTEORDER_H
3
4/*
5 *  include/asm-s390/byteorder.h
6 *
7 *  S390 version
8 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
9 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
10 */
11
12#include <asm/types.h>
13
14#ifdef __GNUC__
15
16static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
17{
18  __u32 temp;
19
20  __asm__ __volatile__ (
21          "        st    %0,0(%1)\n"
22          "        icm   %0,8,3(%1)\n"
23          "        icm   %0,4,2(%1)\n"
24          "        icm   %0,2,1(%1)\n"
25          "        ic    %0,0(%1)"
26          : "+&d" (x) : "a" (&temp) : "cc" );
27  return x;
28}
29
30static __inline__ __const__ __u32 ___arch__swab32p(__u32 *x)
31{
32  __u32 result;
33
34  __asm__ __volatile__ (
35          "        icm   %0,8,3(%1)\n"
36          "        icm   %0,4,2(%1)\n"
37          "        icm   %0,2,1(%1)\n"
38          "        ic    %0,0(%1)"
39          : "=&d" (result) : "a" (x) : "cc" );
40  return result;
41}
42
43static __inline__ void ___arch__swab32s(__u32 *x)
44{
45  __asm__ __volatile__ (
46          "        icm   0,8,3(%0)\n"
47          "        icm   0,4,2(%0)\n"
48          "        icm   0,2,1(%0)\n"
49          "        ic    0,0(%0)\n"
50          "        st    0,0(%0)"
51          : : "a" (x) : "0", "memory", "cc");
52}
53
54static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
55{
56  __u16 temp;
57
58  __asm__ __volatile__ (
59          "        sth   %0,0(%1)\n"
60          "        icm   %0,2,1(%1)\n"
61          "        ic    %0,0(%1)\n"
62          : "+&d" (x) : "a" (&temp) : "memory", "cc" );
63  return x;
64}
65
66static __inline__ __const__ __u16 ___arch__swab16p(__u16 *x)
67{
68  __u16 result;
69
70  __asm__ __volatile__ (
71          "        sr    %0,%0\n"
72          "        icm   %0,2,1(%1)\n"
73          "        ic    %0,0(%1)\n"
74          : "=&d" (result) : "a" (x) : "cc" );
75  return result;
76}
77
78static __inline__ void ___arch__swab16s(__u16 *x)
79{
80  __asm__ __volatile__(
81          "        icm   0,2,1(%0)\n"
82          "        ic    0,0(%0)\n"
83          "        sth   0,0(%0)"
84          : : "a" (x) : "0", "memory", "cc" );
85}
86
87#define __arch__swab32(x) ___arch__swab32(x)
88#define __arch__swab16(x) ___arch__swab16(x)
89#define __arch__swab32p(x) ___arch__swab32p(x)
90#define __arch__swab16p(x) ___arch__swab16p(x)
91#define __arch__swab32s(x) ___arch__swab32s(x)
92#define __arch__swab16s(x) ___arch__swab16s(x)
93
94#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
95#  define __BYTEORDER_HAS_U64__
96#  define __SWAB_64_THRU_32__
97#endif
98
99#endif /* __GNUC__ */
100
101#include <linux/byteorder/big_endian.h>
102
103#endif /* _S390_BYTEORDER_H */
104