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92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*-
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* Copyright (c) 2013-2015 Mark R V Murray
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef UNIT_TEST_H_INCLUDED
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#define UNIT_TEST_H_INCLUDED
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#ifdef _KERNEL
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#error "Random unit tests cannot be compiled into the kernel."
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#endif
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#include <sys/types.h>
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#include <inttypes.h>
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#include <stdint.h>
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#if defined(clang) && __has_builtin(__builtin_readcyclecounter)
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#define rdtsc __builtin_readcyclecounter
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#else /* !clang */
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#if defined(__amd64__) || defined(__i386__)
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static __inline uint64_t
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rdtsc(void)
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{
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uint32_t low, high;
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__asm __volatile("rdtsc" : "=a" (low), "=d" (high));
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return (low | ((uint64_t)high << 32));
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}
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#else /* __amd64__ || __i386__ */
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#error "No rdtsc() implementation available."
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#endif /* __amd64__ || __i386__ */
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#endif /* !clang */
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static __inline uint64_t
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get_cyclecount(void)
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{
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return (rdtsc());
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}
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#define HARVESTSIZE 2
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#define RANDOM_BLOCKSIZE 16
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enum random_entropy_source {
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RANDOM_START = 0,
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RANDOM_CACHED = 0,
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ENTROPYSOURCE = 32
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};
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struct harvest_event {
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uintmax_t he_somecounter; /* fast counter for clock jitter */
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uint32_t he_entropy[HARVESTSIZE];/* some harvested entropy */
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uint8_t he_size; /* harvested entropy byte count */
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uint8_t he_destination; /* destination pool of this entropy */
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enum random_entropy_source he_source; /* origin of the entropy */
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void * he_next; /* next item on the list */
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};
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struct sysctl_ctx_list;
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#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
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#define KASSERT(exp,msg) do { \
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if (!(exp)) { \
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printf msg; \
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exit(0); \
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} \
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} while (0)
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#endif /* UNIT_TEST_H_INCLUDED */
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