1/* 2 * integers.h 3 * 4 * defines integer types (or refers to their definitions) 5 * 6 * David A. McGrew 7 * Cisco Systems, Inc. 8 */ 9 10/* 11 * 12 * Copyright (c) 2001-2006, Cisco Systems, Inc. 13 * All rights reserved. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 19 * Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 22 * Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials provided 25 * with the distribution. 26 * 27 * Neither the name of the Cisco Systems, Inc. nor the names of its 28 * contributors may be used to endorse or promote products derived 29 * from this software without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 42 * OF THE POSSIBILITY OF SUCH DAMAGE. 43 * 44 */ 45 46 47#ifndef INTEGERS_H 48#define INTEGERS_H 49 50#include "config.h" /* configuration file, using autoconf */ 51 52#ifdef SRTP_KERNEL 53 54#include "kernel_compat.h" 55 56#else /* SRTP_KERNEL */ 57 58/* use standard integer definitions, if they're available */ 59#ifdef HAVE_STDLIB_H 60# include <stdlib.h> 61#endif 62#ifdef HAVE_STDINT_H 63# include <stdint.h> 64#endif 65#ifdef HAVE_INTTYPES_H 66# include <inttypes.h> 67#endif 68#ifdef HAVE_SYS_TYPES_H 69# include <sys/types.h> 70#endif 71#ifdef HAVE_SYS_INT_TYPES_H 72# include <sys/int_types.h> /* this exists on Sun OS */ 73#endif 74#ifdef HAVE_MACHINE_TYPES_H 75# include <machine/types.h> 76#endif 77 78/* Can we do 64 bit integers? */ 79#ifndef HAVE_UINT64_T 80# if SIZEOF_UNSIGNED_LONG == 8 81typedef unsigned long uint64_t; 82# elif SIZEOF_UNSIGNED_LONG_LONG == 8 83typedef unsigned long long uint64_t; 84# else 85# define NO_64BIT_MATH 1 86# endif 87#endif 88 89/* Reasonable defaults for 32 bit machines - you may need to 90 * edit these definitions for your own machine. */ 91#ifndef HAVE_UINT8_T 92typedef unsigned char uint8_t; 93#endif 94#ifndef HAVE_UINT16_T 95typedef unsigned short int uint16_t; 96#endif 97#ifndef HAVE_UINT32_T 98typedef unsigned int uint32_t; 99#endif 100 101#ifdef NO_64BIT_MATH 102typedef double uint64_t; 103/* assert that sizeof(double) == 8 */ 104extern uint64_t make64(uint32_t high, uint32_t low); 105extern uint32_t high32(uint64_t value); 106extern uint32_t low32(uint64_t value); 107#endif 108 109#endif /* SRTP_KERNEL */ 110 111/* These macros are to load and store 32-bit values from un-aligned 112 addresses. This is required for processors that do not allow unaligned 113 loads. */ 114#ifdef ALIGNMENT_32BIT_REQUIRED 115/* Note that if it's in a variable, you can memcpy it */ 116#ifdef WORDS_BIGENDIAN 117#define PUT_32(addr,value) \ 118 { \ 119 ((unsigned char *) (addr))[0] = (value >> 24); \ 120 ((unsigned char *) (addr))[1] = (value >> 16) & 0xff; \ 121 ((unsigned char *) (addr))[2] = (value >> 8) & 0xff; \ 122 ((unsigned char *) (addr))[3] = (value) & 0xff; \ 123 } 124#define GET_32(addr) ((((unsigned char *) (addr))[0] << 24) | \ 125 (((unsigned char *) (addr))[1] << 16) | \ 126 (((unsigned char *) (addr))[2] << 8) | \ 127 (((unsigned char *) (addr))[3])) 128#else 129#define PUT_32(addr,value) \ 130 { \ 131 ((unsigned char *) (addr))[3] = (value >> 24); \ 132 ((unsigned char *) (addr))[2] = (value >> 16) & 0xff; \ 133 ((unsigned char *) (addr))[1] = (value >> 8) & 0xff; \ 134 ((unsigned char *) (addr))[0] = (value) & 0xff; \ 135 } 136#define GET_32(addr) ((((unsigned char *) (addr))[3] << 24) | \ 137 (((unsigned char *) (addr))[2] << 16) | \ 138 (((unsigned char *) (addr))[1] << 8) | \ 139 (((unsigned char *) (addr))[0])) 140#endif // WORDS_BIGENDIAN 141#else 142#define PUT_32(addr,value) *(((uint32_t *) (addr)) = (value) 143#define GET_32(addr) (*(((uint32_t *) (addr))) 144#endif 145 146#endif /* INTEGERS_H */ 147