2 * Copyright (c) 2013-2015 Mark R V Murray
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #ifndef UNIT_TEST_H_INCLUDED
31 #define UNIT_TEST_H_INCLUDED
34 #error "Random unit tests cannot be compiled into the kernel."
37 #include <sys/types.h>
41 #if defined(clang) && __has_builtin(__builtin_readcyclecounter)
42 #define rdtsc __builtin_readcyclecounter
44 #if defined(__amd64__) || defined(__i386__)
45 static __inline uint64_t
50 __asm __volatile("rdtsc" : "=a" (low), "=d" (high));
51 return (low | ((uint64_t)high << 32));
53 #else /* __amd64__ || __i386__ */
54 #error "No rdtsc() implementation available."
55 #endif /* __amd64__ || __i386__ */
58 static __inline uint64_t
66 #define RANDOM_BLOCKSIZE 16
68 enum random_entropy_source {
74 struct harvest_event {
75 uintmax_t he_somecounter; /* fast counter for clock jitter */
76 uint32_t he_entropy[HARVESTSIZE];/* some harvested entropy */
77 u_int he_size; /* harvested entropy byte count */
78 u_int he_bits; /* stats about the entropy */
79 u_int he_destination; /* destination pool of this entropy */
80 enum random_entropy_source he_source; /* origin of the entropy */
81 void * he_next; /* next item on the list */
84 struct sysctl_ctx_list;
86 #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
87 #define KASSERT(exp,msg) do { \
94 #endif /* UNIT_TEST_H_INCLUDED */