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| 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 |
| 102 #ifdef NO_64BIT_MATH |
| 103 typedef double uint64_t; |
| 104 /* assert that sizeof(double) == 8 */ |
| 105 extern uint64_t make64(uint32_t high, uint32_t low); |
| 106 extern uint32_t high32(uint64_t value); |
| 107 extern uint32_t low32(uint64_t value); |
| 108 #endif |
| 109 |
| 110 #endif /* SRTP_KERNEL */ |
| 111 |
| 112 /* These macros are to load and store 32-bit values from un-aligned |
| 113 addresses. This is required for processors that do not allow unaligned |
| 114 loads. */ |
| 115 #ifdef ALIGNMENT_32BIT_REQUIRED |
| 116 /* Note that if it's in a variable, you can memcpy it */ |
| 117 #ifdef WORDS_BIGENDIAN |
| 118 #define PUT_32(addr,value) \ |
| 119 { \ |
| 120 ((unsigned char *) (addr))[0] = (value >> 24); \ |
| 121 ((unsigned char *) (addr))[1] = (value >> 16) & 0xff; \ |
| 122 ((unsigned char *) (addr))[2] = (value >> 8) & 0xff; \ |
| 123 ((unsigned char *) (addr))[3] = (value) & 0xff; \ |
| 124 } |
| 125 #define GET_32(addr) ((((unsigned char *) (addr))[0] << 24) | \ |
| 126 (((unsigned char *) (addr))[1] << 16) | \ |
| 127 (((unsigned char *) (addr))[2] << 8) | \ |
| 128 (((unsigned char *) (addr))[3])) |
| 129 #else |
| 130 #define PUT_32(addr,value) \ |
| 131 { \ |
| 132 ((unsigned char *) (addr))[3] = (value >> 24); \ |
| 133 ((unsigned char *) (addr))[2] = (value >> 16) & 0xff; \ |
| 134 ((unsigned char *) (addr))[1] = (value >> 8) & 0xff; \ |
| 135 ((unsigned char *) (addr))[0] = (value) & 0xff; \ |
| 136 } |
| 137 #define GET_32(addr) ((((unsigned char *) (addr))[3] << 24) | \ |
| 138 (((unsigned char *) (addr))[2] << 16) | \ |
| 139 (((unsigned char *) (addr))[1] << 8) | \ |
| 140 (((unsigned char *) (addr))[0])) |
| 141 #endif // WORDS_BIGENDIAN |
| 142 #else |
| 143 #define PUT_32(addr,value) *(((uint32_t *) (addr)) = (value) |
| 144 #define GET_32(addr) (*(((uint32_t *) (addr))) |
| 145 #endif |
| 146 |
| 147 #endif /* INTEGERS_H */ |
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