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 81 typedef unsigned long uint64_t; 82 # elif SIZEOF_UNSIGNED_LONG_LONG == 8 83 typedef 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 92 typedef unsigned char uint8_t; 93 #endif 94 #ifndef HAVE_UINT16_T 95 typedef unsigned short int uint16_t; 96 #endif 97 #ifndef HAVE_UINT32_T 98 typedef unsigned int uint32_t; 99 #endif 100 101 #ifdef NO_64BIT_MATH 102 typedef double uint64_t; 103 /* assert that sizeof(double) == 8 */ 104 extern uint64_t make64(uint32_t high, uint32_t low); 105 extern uint32_t high32(uint64_t value); 106 extern 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