swab.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633 
1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _UAPI_LINUX_SWAB_H
20#define _UAPI_LINUX_SWAB_H
21#include <linux/types.h>
22#include <linux/compiler.h>
23#include <asm/swab.h>
24#define ___constant_swab16(x) ((__u16) ((((__u16) (x) & (__u16) 0x00ffU) << 8) | (((__u16) (x) & (__u16) 0xff00U) >> 8)))
25#define ___constant_swab32(x) ((__u32) ((((__u32) (x) & (__u32) 0x000000ffUL) << 24) | (((__u32) (x) & (__u32) 0x0000ff00UL) << 8) | (((__u32) (x) & (__u32) 0x00ff0000UL) >> 8) | (((__u32) (x) & (__u32) 0xff000000UL) >> 24)))
26#define ___constant_swab64(x) ((__u64) ((((__u64) (x) & (__u64) 0x00000000000000ffULL) << 56) | (((__u64) (x) & (__u64) 0x000000000000ff00ULL) << 40) | (((__u64) (x) & (__u64) 0x0000000000ff0000ULL) << 24) | (((__u64) (x) & (__u64) 0x00000000ff000000ULL) << 8) | (((__u64) (x) & (__u64) 0x000000ff00000000ULL) >> 8) | (((__u64) (x) & (__u64) 0x0000ff0000000000ULL) >> 24) | (((__u64) (x) & (__u64) 0x00ff000000000000ULL) >> 40) | (((__u64) (x) & (__u64) 0xff00000000000000ULL) >> 56)))
27#define ___constant_swahw32(x) ((__u32) ((((__u32) (x) & (__u32) 0x0000ffffUL) << 16) | (((__u32) (x) & (__u32) 0xffff0000UL) >> 16)))
28#define ___constant_swahb32(x) ((__u32) ((((__u32) (x) & (__u32) 0x00ff00ffUL) << 8) | (((__u32) (x) & (__u32) 0xff00ff00UL) >> 8)))
29#ifdef __arch_swab16
30#else
31#endif
32#ifdef __arch_swab32
33#else
34#endif
35#ifdef __arch_swab64
36#elif defined(__SWAB_64_THRU_32__)
37#else
38#endif
39static inline __attribute__((__const__)) __u32 __fswahw32(__u32 val) {
40#ifdef __arch_swahw32
41  return __arch_swahw32(val);
42#else
43  return ___constant_swahw32(val);
44#endif
45}
46static inline __attribute__((__const__)) __u32 __fswahb32(__u32 val) {
47#ifdef __arch_swahb32
48  return __arch_swahb32(val);
49#else
50  return ___constant_swahb32(val);
51#endif
52}
53#define __swab16(x) (__u16) __builtin_bswap16((__u16) (x))
54#define __swab32(x) (__u32) __builtin_bswap32((__u32) (x))
55#define __swab64(x) (__u64) __builtin_bswap64((__u64) (x))
56#define __swahw32(x) (__builtin_constant_p((__u32) (x)) ? ___constant_swahw32(x) : __fswahw32(x))
57#define __swahb32(x) (__builtin_constant_p((__u32) (x)) ? ___constant_swahb32(x) : __fswahb32(x))
58static __always_inline __u16 __swab16p(const __u16 * p) {
59#ifdef __arch_swab16p
60  return __arch_swab16p(p);
61#else
62  return __swab16(* p);
63#endif
64}
65static __always_inline __u32 __swab32p(const __u32 * p) {
66#ifdef __arch_swab32p
67  return __arch_swab32p(p);
68#else
69  return __swab32(* p);
70#endif
71}
72static __always_inline __u64 __swab64p(const __u64 * p) {
73#ifdef __arch_swab64p
74  return __arch_swab64p(p);
75#else
76  return __swab64(* p);
77#endif
78}
79static inline __u32 __swahw32p(const __u32 * p) {
80#ifdef __arch_swahw32p
81  return __arch_swahw32p(p);
82#else
83  return __swahw32(* p);
84#endif
85}
86static inline __u32 __swahb32p(const __u32 * p) {
87#ifdef __arch_swahb32p
88  return __arch_swahb32p(p);
89#else
90  return __swahb32(* p);
91#endif
92}
93static inline void __swab16s(__u16 * p) {
94#ifdef __arch_swab16s
95  __arch_swab16s(p);
96#else
97  * p = __swab16p(p);
98#endif
99}
100static __always_inline void __swab32s(__u32 * p) {
101#ifdef __arch_swab32s
102  __arch_swab32s(p);
103#else
104  * p = __swab32p(p);
105#endif
106}
107static __always_inline void __swab64s(__u64 * p) {
108#ifdef __arch_swab64s
109  __arch_swab64s(p);
110#else
111  * p = __swab64p(p);
112#endif
113}
114static inline void __swahw32s(__u32 * p) {
115#ifdef __arch_swahw32s
116  __arch_swahw32s(p);
117#else
118  * p = __swahw32p(p);
119#endif
120}
121static inline void __swahb32s(__u32 * p) {
122#ifdef __arch_swahb32s
123  __arch_swahb32s(p);
124#else
125  * p = __swahb32p(p);
126#endif
127}
128#endif
129