1/*- 2 * Copyright (c) 2013-2015 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 14 * 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. 25 */ 26 27 28#ifndef UNIT_TEST_H_INCLUDED 29#define UNIT_TEST_H_INCLUDED 30 31#ifdef _KERNEL 32#error "Random unit tests cannot be compiled into the kernel." 33#endif 34 35#include <sys/types.h> 36#include <inttypes.h> 37#include <stdint.h> 38 39#ifndef __LITEOS__ 40#if defined(clang) && __has_builtin(__builtin_readcyclecounter) 41#define rdtsc __builtin_readcyclecounter 42#else /* !clang */ 43#if defined(__amd64__) || defined(__i386__) 44static __inline uint64_t 45rdtsc(void) 46{ 47 uint32_t low, high; 48 49 __asm __volatile("rdtsc" : "=a" (low), "=d" (high)); 50 return (low | ((uint64_t)high << 32)); 51} 52#else /* __amd64__ || __i386__ */ 53#error "No rdtsc() implementation available." 54#endif /* __amd64__ || __i386__ */ 55#endif /* !clang */ 56#endif 57 58static __inline uint64_t 59get_cyclecount(void) 60{ 61#ifndef __LITEOS__ 62 return (rdtsc()); 63#else 64 return 0; 65#endif 66} 67 68#define HARVESTSIZE 2 69#define RANDOM_BLOCKSIZE 16 70 71enum random_entropy_source { 72 RANDOM_START = 0, 73 RANDOM_CACHED = 0, 74 ENTROPYSOURCE = 32 75}; 76 77struct harvest_event { 78 uintmax_t he_somecounter; /* fast counter for clock jitter */ 79 uint32_t he_entropy[HARVESTSIZE];/* some harvested entropy */ 80 u_int he_size; /* harvested entropy byte count */ 81 u_int he_bits; /* stats about the entropy */ 82 u_int he_destination; /* destination pool of this entropy */ 83 enum random_entropy_source he_source; /* origin of the entropy */ 84 void * he_next; /* next item on the list */ 85}; 86 87struct sysctl_ctx_list; 88 89#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed") 90#define KASSERT(exp,msg) do { \ 91 if (!(exp)) { \ 92 printf msg; \ 93 exit(0); \ 94 } \ 95} while (0) 96 97#endif /* UNIT_TEST_H_INCLUDED */ 98