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
102#ifdef NO_64BIT_MATH
103typedef double uint64_t;
104/* assert that sizeof(double) == 8 */
105extern uint64_t make64(uint32_t high, uint32_t low);
106extern uint32_t high32(uint64_t value);
107extern 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 */
148