147 lines
5.1 KiB
C
147 lines
5.1 KiB
C
/*
|
|
* integers.h
|
|
*
|
|
* defines integer types (or refers to their definitions)
|
|
*
|
|
* David A. McGrew
|
|
* Cisco Systems, Inc.
|
|
*/
|
|
|
|
/*
|
|
*
|
|
* Copyright (c) 2001-2017, Cisco Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
*
|
|
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef INTEGERS_H
|
|
#define INTEGERS_H
|
|
|
|
/* use standard integer definitions, if they're available */
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#ifdef HAVE_STDINT_H
|
|
#include <stdint.h>
|
|
#endif
|
|
#ifdef HAVE_INTTYPES_H
|
|
#include <inttypes.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_INT_TYPES_H
|
|
#include <sys/int_types.h> /* this exists on Sun OS */
|
|
#endif
|
|
#ifdef HAVE_MACHINE_TYPES_H
|
|
#include <machine/types.h>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Can we do 64 bit integers? */
|
|
#if !defined(HAVE_UINT64_T)
|
|
#if SIZEOF_UNSIGNED_LONG == 8
|
|
typedef unsigned long uint64_t;
|
|
#elif SIZEOF_UNSIGNED_LONG_LONG == 8
|
|
typedef unsigned long long uint64_t;
|
|
#else
|
|
#define NO_64BIT_MATH 1
|
|
#endif
|
|
#endif
|
|
|
|
/* Reasonable defaults for 32 bit machines - you may need to
|
|
* edit these definitions for your own machine. */
|
|
#ifndef HAVE_UINT8_T
|
|
typedef unsigned char uint8_t;
|
|
#endif
|
|
#ifndef HAVE_UINT16_T
|
|
typedef unsigned short int uint16_t;
|
|
#endif
|
|
#ifndef HAVE_UINT32_T
|
|
typedef unsigned int uint32_t;
|
|
#endif
|
|
#ifndef HAVE_INT32_T
|
|
typedef int int32_t;
|
|
#endif
|
|
|
|
#if defined(NO_64BIT_MATH) && defined(HAVE_CONFIG_H)
|
|
typedef double uint64_t;
|
|
/* assert that sizeof(double) == 8 */
|
|
extern uint64_t make64(uint32_t high, uint32_t low);
|
|
extern uint32_t high32(uint64_t value);
|
|
extern uint32_t low32(uint64_t value);
|
|
#endif
|
|
|
|
/* These macros are to load and store 32-bit values from un-aligned
|
|
addresses. This is required for processors that do not allow unaligned
|
|
loads. */
|
|
#ifdef ALIGNMENT_32BIT_REQUIRED
|
|
/* Note that if it's in a variable, you can memcpy it */
|
|
#ifdef WORDS_BIGENDIAN
|
|
#define PUT_32(addr, value) \
|
|
{ \
|
|
((unsigned char *)(addr))[0] = (value >> 24); \
|
|
((unsigned char *)(addr))[1] = (value >> 16) & 0xff; \
|
|
((unsigned char *)(addr))[2] = (value >> 8) & 0xff; \
|
|
((unsigned char *)(addr))[3] = (value)&0xff; \
|
|
}
|
|
#define GET_32(addr) \
|
|
((((unsigned char *)(addr))[0] << 24) | \
|
|
(((unsigned char *)(addr))[1] << 16) | \
|
|
(((unsigned char *)(addr))[2] << 8) | (((unsigned char *)(addr))[3]))
|
|
#else
|
|
#define PUT_32(addr, value) \
|
|
{ \
|
|
((unsigned char *)(addr))[3] = (value >> 24); \
|
|
((unsigned char *)(addr))[2] = (value >> 16) & 0xff; \
|
|
((unsigned char *)(addr))[1] = (value >> 8) & 0xff; \
|
|
((unsigned char *)(addr))[0] = (value)&0xff; \
|
|
}
|
|
#define GET_32(addr) \
|
|
((((unsigned char *)(addr))[3] << 24) | \
|
|
(((unsigned char *)(addr))[2] << 16) | \
|
|
(((unsigned char *)(addr))[1] << 8) | (((unsigned char *)(addr))[0]))
|
|
#endif // WORDS_BIGENDIAN
|
|
#else
|
|
#define PUT_32(addr, value) *(((uint32_t *) (addr)) = (value)
|
|
#define GET_32(addr) (*(((uint32_t *) (addr)))
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* INTEGERS_H */
|