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-rw-r--r--include/linux/byteorder/Kbuild2
-rw-r--r--include/linux/byteorder/big_endian.h3
-rw-r--r--include/linux/byteorder/little_endian.h3
-rw-r--r--include/linux/byteorder/swab.h222
-rw-r--r--include/linux/byteorder/swabb.h135
5 files changed, 2 insertions, 363 deletions
diff --git a/include/linux/byteorder/Kbuild b/include/linux/byteorder/Kbuild
index fbaa7f9cee3..38437225b09 100644
--- a/include/linux/byteorder/Kbuild
+++ b/include/linux/byteorder/Kbuild
@@ -1,4 +1,2 @@
1unifdef-y += big_endian.h 1unifdef-y += big_endian.h
2unifdef-y += little_endian.h 2unifdef-y += little_endian.h
3unifdef-y += swab.h
4unifdef-y += swabb.h
diff --git a/include/linux/byteorder/big_endian.h b/include/linux/byteorder/big_endian.h
index 1cba3f3efe5..3c80fd7e8b5 100644
--- a/include/linux/byteorder/big_endian.h
+++ b/include/linux/byteorder/big_endian.h
@@ -9,8 +9,7 @@
9#endif 9#endif
10 10
11#include <linux/types.h> 11#include <linux/types.h>
12#include <linux/byteorder/swab.h> 12#include <linux/swab.h>
13#include <linux/byteorder/swabb.h>
14 13
15#define __constant_htonl(x) ((__force __be32)(__u32)(x)) 14#define __constant_htonl(x) ((__force __be32)(__u32)(x))
16#define __constant_ntohl(x) ((__force __u32)(__be32)(x)) 15#define __constant_ntohl(x) ((__force __u32)(__be32)(x))
diff --git a/include/linux/byteorder/little_endian.h b/include/linux/byteorder/little_endian.h
index cedc1b5a289..83195fb8296 100644
--- a/include/linux/byteorder/little_endian.h
+++ b/include/linux/byteorder/little_endian.h
@@ -9,8 +9,7 @@
9#endif 9#endif
10 10
11#include <linux/types.h> 11#include <linux/types.h>
12#include <linux/byteorder/swab.h> 12#include <linux/swab.h>
13#include <linux/byteorder/swabb.h>
14 13
15#define __constant_htonl(x) ((__force __be32)___constant_swab32((x))) 14#define __constant_htonl(x) ((__force __be32)___constant_swab32((x)))
16#define __constant_ntohl(x) ___constant_swab32((__force __be32)(x)) 15#define __constant_ntohl(x) ___constant_swab32((__force __be32)(x))
diff --git a/include/linux/byteorder/swab.h b/include/linux/byteorder/swab.h
deleted file mode 100644
index 142134ff164..00000000000
--- a/include/linux/byteorder/swab.h
+++ /dev/null
@@ -1,222 +0,0 @@
1#ifndef _LINUX_BYTEORDER_SWAB_H
2#define _LINUX_BYTEORDER_SWAB_H
3
4/*
5 * linux/byteorder/swab.h
6 * Byte-swapping, independently from CPU endianness
7 * swabXX[ps]?(foo)
8 *
9 * Francois-Rene Rideau <fare@tunes.org> 19971205
10 * separated swab functions from cpu_to_XX,
11 * to clean up support for bizarre-endian architectures.
12 *
13 * Trent Piepho <xyzzy@speakeasy.org> 2007114
14 * make constant-folding work, provide C versions that
15 * gcc can optimize better, explain different versions
16 *
17 * See asm-i386/byteorder.h and suches for examples of how to provide
18 * architecture-dependent optimized versions
19 *
20 */
21
22#include <linux/compiler.h>
23
24/* Functions/macros defined, there are a lot:
25 *
26 * ___swabXX
27 * Generic C versions of the swab functions.
28 *
29 * ___constant_swabXX
30 * C versions that gcc can fold into a compile-time constant when
31 * the argument is a compile-time constant.
32 *
33 * __arch__swabXX[sp]?
34 * Architecture optimized versions of all the swab functions
35 * (including the s and p versions). These can be defined in
36 * asm-arch/byteorder.h. Any which are not, are defined here.
37 * __arch__swabXXs() is defined in terms of __arch__swabXXp(), which
38 * is defined in terms of __arch__swabXX(), which is in turn defined
39 * in terms of ___swabXX(x).
40 * These must be macros. They may be unsafe for arguments with
41 * side-effects.
42 *
43 * __fswabXX
44 * Inline function versions of the __arch__ macros. These _are_ safe
45 * if the arguments have side-effects. Note there are no s and p
46 * versions of these.
47 *
48 * __swabXX[sb]
49 * There are the ones you should actually use. The __swabXX versions
50 * will be a constant given a constant argument and use the arch
51 * specific code (if any) for non-constant arguments. The s and p
52 * versions always use the arch specific code (constant folding
53 * doesn't apply). They are safe to use with arguments with
54 * side-effects.
55 *
56 * swabXX[sb]
57 * Nicknames for __swabXX[sb] to use in the kernel.
58 */
59
60/* casts are necessary for constants, because we never know how for sure
61 * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way.
62 */
63
64static __inline__ __attribute_const__ __u16 ___swab16(__u16 x)
65{
66 return x<<8 | x>>8;
67}
68static __inline__ __attribute_const__ __u32 ___swab32(__u32 x)
69{
70 return x<<24 | x>>24 |
71 (x & (__u32)0x0000ff00UL)<<8 |
72 (x & (__u32)0x00ff0000UL)>>8;
73}
74static __inline__ __attribute_const__ __u64 ___swab64(__u64 x)
75{
76 return x<<56 | x>>56 |
77 (x & (__u64)0x000000000000ff00ULL)<<40 |
78 (x & (__u64)0x0000000000ff0000ULL)<<24 |
79 (x & (__u64)0x00000000ff000000ULL)<< 8 |
80 (x & (__u64)0x000000ff00000000ULL)>> 8 |
81 (x & (__u64)0x0000ff0000000000ULL)>>24 |
82 (x & (__u64)0x00ff000000000000ULL)>>40;
83}
84
85#define ___constant_swab16(x) \
86 ((__u16)( \
87 (((__u16)(x) & (__u16)0x00ffU) << 8) | \
88 (((__u16)(x) & (__u16)0xff00U) >> 8) ))
89#define ___constant_swab32(x) \
90 ((__u32)( \
91 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
92 (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
93 (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
94 (((__u32)(x) & (__u32)0xff000000UL) >> 24) ))
95#define ___constant_swab64(x) \
96 ((__u64)( \
97 (__u64)(((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \
98 (__u64)(((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \
99 (__u64)(((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \
100 (__u64)(((__u64)(x) & (__u64)0x00000000ff000000ULL) << 8) | \
101 (__u64)(((__u64)(x) & (__u64)0x000000ff00000000ULL) >> 8) | \
102 (__u64)(((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \
103 (__u64)(((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \
104 (__u64)(((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56) ))
105
106/*
107 * provide defaults when no architecture-specific optimization is detected
108 */
109#ifndef __arch__swab16
110# define __arch__swab16(x) ___swab16(x)
111#endif
112#ifndef __arch__swab32
113# define __arch__swab32(x) ___swab32(x)
114#endif
115#ifndef __arch__swab64
116# define __arch__swab64(x) ___swab64(x)
117#endif
118
119#ifndef __arch__swab16p
120# define __arch__swab16p(x) __arch__swab16(*(x))
121#endif
122#ifndef __arch__swab32p
123# define __arch__swab32p(x) __arch__swab32(*(x))
124#endif
125#ifndef __arch__swab64p
126# define __arch__swab64p(x) __arch__swab64(*(x))
127#endif
128
129#ifndef __arch__swab16s
130# define __arch__swab16s(x) ((void)(*(x) = __arch__swab16p(x)))
131#endif
132#ifndef __arch__swab32s
133# define __arch__swab32s(x) ((void)(*(x) = __arch__swab32p(x)))
134#endif
135#ifndef __arch__swab64s
136# define __arch__swab64s(x) ((void)(*(x) = __arch__swab64p(x)))
137#endif
138
139
140/*
141 * Allow constant folding
142 */
143#if defined(__GNUC__) && defined(__OPTIMIZE__)
144# define __swab16(x) \
145(__builtin_constant_p((__u16)(x)) ? \
146 ___constant_swab16((x)) : \
147 __fswab16((x)))
148# define __swab32(x) \
149(__builtin_constant_p((__u32)(x)) ? \
150 ___constant_swab32((x)) : \
151 __fswab32((x)))
152# define __swab64(x) \
153(__builtin_constant_p((__u64)(x)) ? \
154 ___constant_swab64((x)) : \
155 __fswab64((x)))
156#else
157# define __swab16(x) __fswab16(x)
158# define __swab32(x) __fswab32(x)
159# define __swab64(x) __fswab64(x)
160#endif /* OPTIMIZE */
161
162
163static __inline__ __attribute_const__ __u16 __fswab16(__u16 x)
164{
165 return __arch__swab16(x);
166}
167static __inline__ __u16 __swab16p(const __u16 *x)
168{
169 return __arch__swab16p(x);
170}
171static __inline__ void __swab16s(__u16 *addr)
172{
173 __arch__swab16s(addr);
174}
175
176static __inline__ __attribute_const__ __u32 __fswab32(__u32 x)
177{
178 return __arch__swab32(x);
179}
180static __inline__ __u32 __swab32p(const __u32 *x)
181{
182 return __arch__swab32p(x);
183}
184static __inline__ void __swab32s(__u32 *addr)
185{
186 __arch__swab32s(addr);
187}
188
189#ifdef __BYTEORDER_HAS_U64__
190static __inline__ __attribute_const__ __u64 __fswab64(__u64 x)
191{
192# ifdef __SWAB_64_THRU_32__
193 __u32 h = x >> 32;
194 __u32 l = x & ((1ULL<<32)-1);
195 return (((__u64)__swab32(l)) << 32) | ((__u64)(__swab32(h)));
196# else
197 return __arch__swab64(x);
198# endif
199}
200static __inline__ __u64 __swab64p(const __u64 *x)
201{
202 return __arch__swab64p(x);
203}
204static __inline__ void __swab64s(__u64 *addr)
205{
206 __arch__swab64s(addr);
207}
208#endif /* __BYTEORDER_HAS_U64__ */
209
210#if defined(__KERNEL__)
211#define swab16 __swab16
212#define swab32 __swab32
213#define swab64 __swab64
214#define swab16p __swab16p
215#define swab32p __swab32p
216#define swab64p __swab64p
217#define swab16s __swab16s
218#define swab32s __swab32s
219#define swab64s __swab64s
220#endif
221
222#endif /* _LINUX_BYTEORDER_SWAB_H */
diff --git a/include/linux/byteorder/swabb.h b/include/linux/byteorder/swabb.h
deleted file mode 100644
index 8c780c7d779..00000000000
--- a/include/linux/byteorder/swabb.h
+++ /dev/null
@@ -1,135 +0,0 @@
1#ifndef _LINUX_BYTEORDER_SWABB_H
2#define _LINUX_BYTEORDER_SWABB_H
3
4/*
5 * linux/byteorder/swabb.h
6 * SWAp Bytes Bizarrely
7 * swaHHXX[ps]?(foo)
8 *
9 * Support for obNUXIous pdp-endian and other bizarre architectures.
10 * Will Linux ever run on such ancient beasts? if not, this file
11 * will be but a programming pearl. Still, it's a reminder that we
12 * shouldn't be making too many assumptions when trying to be portable.
13 *
14 */
15
16/*
17 * Meaning of the names I chose (vaxlinux people feel free to correct them):
18 * swahw32 swap 16-bit half-words in a 32-bit word
19 * swahb32 swap 8-bit halves of each 16-bit half-word in a 32-bit word
20 *
21 * No 64-bit support yet. I don't know NUXI conventions for long longs.
22 * I guarantee it will be a mess when it's there, though :->
23 * It will be even worse if there are conflicting 64-bit conventions.
24 * Hopefully, no one ever used 64-bit objects on NUXI machines.
25 *
26 */
27
28#include <linux/types.h>
29
30#define ___swahw32(x) \
31({ \
32 __u32 __x = (x); \
33 ((__u32)( \
34 (((__u32)(__x) & (__u32)0x0000ffffUL) << 16) | \
35 (((__u32)(__x) & (__u32)0xffff0000UL) >> 16) )); \
36})
37#define ___swahb32(x) \
38({ \
39 __u32 __x = (x); \
40 ((__u32)( \
41 (((__u32)(__x) & (__u32)0x00ff00ffUL) << 8) | \
42 (((__u32)(__x) & (__u32)0xff00ff00UL) >> 8) )); \
43})
44
45#define ___constant_swahw32(x) \
46 ((__u32)( \
47 (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | \
48 (((__u32)(x) & (__u32)0xffff0000UL) >> 16) ))
49#define ___constant_swahb32(x) \
50 ((__u32)( \
51 (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | \
52 (((__u32)(x) & (__u32)0xff00ff00UL) >> 8) ))
53
54/*
55 * provide defaults when no architecture-specific optimization is detected
56 */
57#ifndef __arch__swahw32
58# define __arch__swahw32(x) ___swahw32(x)
59#endif
60#ifndef __arch__swahb32
61# define __arch__swahb32(x) ___swahb32(x)
62#endif
63
64#ifndef __arch__swahw32p
65# define __arch__swahw32p(x) __swahw32(*(x))
66#endif
67#ifndef __arch__swahb32p
68# define __arch__swahb32p(x) __swahb32(*(x))
69#endif
70
71#ifndef __arch__swahw32s
72# define __arch__swahw32s(x) do { *(x) = __swahw32p((x)); } while (0)
73#endif
74#ifndef __arch__swahb32s
75# define __arch__swahb32s(x) do { *(x) = __swahb32p((x)); } while (0)
76#endif
77
78
79/*
80 * Allow constant folding
81 */
82#define __swahw32(x) \
83(__builtin_constant_p((__u32)(x)) ? \
84 ___swahw32((x)) : \
85 __fswahw32((x)))
86#define __swahb32(x) \
87(__builtin_constant_p((__u32)(x)) ? \
88 ___swahb32((x)) : \
89 __fswahb32((x)))
90
91
92static inline __u32 __fswahw32(__u32 x)
93{
94 return __arch__swahw32(x);
95}
96
97static inline __u32 __swahw32p(__u32 *x)
98{
99 return __arch__swahw32p(x);
100}
101
102static inline void __swahw32s(__u32 *addr)
103{
104 __arch__swahw32s(addr);
105}
106
107static inline __u32 __fswahb32(__u32 x)
108{
109 return __arch__swahb32(x);
110}
111
112static inline __u32 __swahb32p(__u32 *x)
113{
114 return __arch__swahb32p(x);
115}
116
117static inline void __swahb32s(__u32 *addr)
118{
119 __arch__swahb32s(addr);
120}
121
122#ifdef __BYTEORDER_HAS_U64__
123/*
124 * Not supported yet
125 */
126#endif /* __BYTEORDER_HAS_U64__ */
127
128#define swahw32 __swahw32
129#define swahb32 __swahb32
130#define swahw32p __swahw32p
131#define swahb32p __swahb32p
132#define swahw32s __swahw32s
133#define swahb32s __swahb32s
134
135#endif /* _LINUX_BYTEORDER_SWABB_H */