Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 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 "srtp_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 */ |