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[linux.git] / tools / testing / selftests / bpf / progs / bind_prog.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __BIND_PROG_H__
3 #define __BIND_PROG_H__
4
5 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
6 #define load_byte(src, b, s) \
7         (((volatile __u8 *)&(src))[b] << 8 * b)
8 #define load_word(src, w, s) \
9         (((volatile __u16 *)&(src))[w] << 16 * w)
10 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
11 #define load_byte(src, b, s) \
12         (((volatile __u8 *)&(src))[(b) + (sizeof(src) - (s))] << 8 * ((s) - (b) - 1))
13 #define load_word(src, w, s) \
14         (((volatile __u16 *)&(src))[w] << 16 * (((s) / 2) - (w) - 1))
15 #else
16 # error "Fix your compiler's __BYTE_ORDER__?!"
17 #endif
18
19 #endif
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