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authorMatt Fleming2012-02-28 07:37:20 -0600
committerH. Peter Anvin2012-02-28 12:22:51 -0600
commita07f7672d7cf0ff0d6e548a9feb6e0bd016d9c6c (patch)
tree656594c3fb97e31ed6a207d8ba9a5dda026aa04f /tools/include
parent6b21d18ed50c7d145220b0724ea7f2613abf0f95 (diff)
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tools/include: Add byteshift headers for endian access
There are various hostprogs in the kernel that are rolling their own implementations of {get,put}_unaligned_le*(). Copy the byteshift headers from include/linux/unaligned so that they can all use a single implementation. This requires changing some of the data types to the userspace exported ones (u32 -> __u32, etc). Signed-off-by: Matt Fleming <matt.fleming@intel.com> Link: http://lkml.kernel.org/r/1330436245-24875-2-git-send-email-matt@console-pimps.org Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/tools/be_byteshift.h70
-rw-r--r--tools/include/tools/le_byteshift.h70
2 files changed, 140 insertions, 0 deletions
diff --git a/tools/include/tools/be_byteshift.h b/tools/include/tools/be_byteshift.h
new file mode 100644
index 000000000000..f4912e2668ba
--- /dev/null
+++ b/tools/include/tools/be_byteshift.h
@@ -0,0 +1,70 @@
1#ifndef _TOOLS_BE_BYTESHIFT_H
2#define _TOOLS_BE_BYTESHIFT_H
3
4#include <linux/types.h>
5
6static inline __u16 __get_unaligned_be16(const __u8 *p)
7{
8 return p[0] << 8 | p[1];
9}
10
11static inline __u32 __get_unaligned_be32(const __u8 *p)
12{
13 return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
14}
15
16static inline __u64 __get_unaligned_be64(const __u8 *p)
17{
18 return (__u64)__get_unaligned_be32(p) << 32 |
19 __get_unaligned_be32(p + 4);
20}
21
22static inline void __put_unaligned_be16(__u16 val, __u8 *p)
23{
24 *p++ = val >> 8;
25 *p++ = val;
26}
27
28static inline void __put_unaligned_be32(__u32 val, __u8 *p)
29{
30 __put_unaligned_be16(val >> 16, p);
31 __put_unaligned_be16(val, p + 2);
32}
33
34static inline void __put_unaligned_be64(__u64 val, __u8 *p)
35{
36 __put_unaligned_be32(val >> 32, p);
37 __put_unaligned_be32(val, p + 4);
38}
39
40static inline __u16 get_unaligned_be16(const void *p)
41{
42 return __get_unaligned_be16((const __u8 *)p);
43}
44
45static inline __u32 get_unaligned_be32(const void *p)
46{
47 return __get_unaligned_be32((const __u8 *)p);
48}
49
50static inline __u64 get_unaligned_be64(const void *p)
51{
52 return __get_unaligned_be64((const __u8 *)p);
53}
54
55static inline void put_unaligned_be16(__u16 val, void *p)
56{
57 __put_unaligned_be16(val, p);
58}
59
60static inline void put_unaligned_be32(__u32 val, void *p)
61{
62 __put_unaligned_be32(val, p);
63}
64
65static inline void put_unaligned_be64(__u64 val, void *p)
66{
67 __put_unaligned_be64(val, p);
68}
69
70#endif /* _TOOLS_BE_BYTESHIFT_H */
diff --git a/tools/include/tools/le_byteshift.h b/tools/include/tools/le_byteshift.h
new file mode 100644
index 000000000000..c99d45a68bda
--- /dev/null
+++ b/tools/include/tools/le_byteshift.h
@@ -0,0 +1,70 @@
1#ifndef _TOOLS_LE_BYTESHIFT_H
2#define _TOOLS_LE_BYTESHIFT_H
3
4#include <linux/types.h>
5
6static inline __u16 __get_unaligned_le16(const __u8 *p)
7{
8 return p[0] | p[1] << 8;
9}
10
11static inline __u32 __get_unaligned_le32(const __u8 *p)
12{
13 return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24;
14}
15
16static inline __u64 __get_unaligned_le64(const __u8 *p)
17{
18 return (__u64)__get_unaligned_le32(p + 4) << 32 |
19 __get_unaligned_le32(p);
20}
21
22static inline void __put_unaligned_le16(__u16 val, __u8 *p)
23{
24 *p++ = val;
25 *p++ = val >> 8;
26}
27
28static inline void __put_unaligned_le32(__u32 val, __u8 *p)
29{
30 __put_unaligned_le16(val >> 16, p + 2);
31 __put_unaligned_le16(val, p);
32}
33
34static inline void __put_unaligned_le64(__u64 val, __u8 *p)
35{
36 __put_unaligned_le32(val >> 32, p + 4);
37 __put_unaligned_le32(val, p);
38}
39
40static inline __u16 get_unaligned_le16(const void *p)
41{
42 return __get_unaligned_le16((const __u8 *)p);
43}
44
45static inline __u32 get_unaligned_le32(const void *p)
46{
47 return __get_unaligned_le32((const __u8 *)p);
48}
49
50static inline __u64 get_unaligned_le64(const void *p)
51{
52 return __get_unaligned_le64((const __u8 *)p);
53}
54
55static inline void put_unaligned_le16(__u16 val, void *p)
56{
57 __put_unaligned_le16(val, p);
58}
59
60static inline void put_unaligned_le32(__u32 val, void *p)
61{
62 __put_unaligned_le32(val, p);
63}
64
65static inline void put_unaligned_le64(__u64 val, void *p)
66{
67 __put_unaligned_le64(val, p);
68}
69
70#endif /* _TOOLS_LE_BYTESHIFT_H */