proxmark3/client/tinycbor/compilersupport_p.h

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/****************************************************************************
**
** Copyright (C) 2017 Intel Corporation
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
** THE SOFTWARE.
**
****************************************************************************/
#ifndef COMPILERSUPPORT_H
#define COMPILERSUPPORT_H
#include "cbor.h"
#ifndef _BSD_SOURCE
# define _BSD_SOURCE
#endif
#ifndef _DEFAULT_SOURCE
# define _DEFAULT_SOURCE
#endif
#ifndef assert
# include <assert.h>
#endif
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#ifndef __cplusplus
# include <stdbool.h>
#endif
#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L || __cpp_static_assert >= 200410
# define cbor_static_assert(x) static_assert(x, #x)
#elif !defined(__cplusplus) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406) && (__STDC_VERSION__ > 199901L)
# define cbor_static_assert(x) _Static_assert(x, #x)
#else
# define cbor_static_assert(x) ((void)sizeof(char[2*!!(x) - 1]))
#endif
#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
/* inline is a keyword */
#else
/* use the definition from cbor.h */
# define inline CBOR_INLINE
#endif
#ifdef NDEBUG
# define cbor_assert(cond) do { if (!(cond)) unreachable(); } while (0)
#else
# define cbor_assert(cond) assert(cond)
#endif
#ifndef STRINGIFY
#define STRINGIFY(x) STRINGIFY2(x)
#endif
#define STRINGIFY2(x) #x
#if !defined(UINT32_MAX) || !defined(INT64_MAX)
/* C89? We can define UINT32_MAX portably, but not INT64_MAX */
# error "Your system has stdint.h but that doesn't define UINT32_MAX or INT64_MAX"
#endif
#ifndef DBL_DECIMAL_DIG
/* DBL_DECIMAL_DIG is C11 */
# define DBL_DECIMAL_DIG 17
#endif
#define DBL_DECIMAL_DIG_STR STRINGIFY(DBL_DECIMAL_DIG)
#if defined(__GNUC__) && defined(__i386__) && !defined(__iamcu__)
# define CBOR_INTERNAL_API_CC __attribute__((regparm(3)))
#elif defined(_MSC_VER) && defined(_M_IX86)
# define CBOR_INTERNAL_API_CC __fastcall
#else
# define CBOR_INTERNAL_API_CC
#endif
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
#if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)) || \
(__has_builtin(__builtin_bswap64) && __has_builtin(__builtin_bswap32))
# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
# define cbor_ntohll __builtin_bswap64
# define cbor_htonll __builtin_bswap64
# define cbor_ntohl __builtin_bswap32
# define cbor_htonl __builtin_bswap32
# ifdef __INTEL_COMPILER
# define cbor_ntohs _bswap16
# define cbor_htons _bswap16
# elif (__GNUC__ * 100 + __GNUC_MINOR__ >= 608) || __has_builtin(__builtin_bswap16)
# define cbor_ntohs __builtin_bswap16
# define cbor_htons __builtin_bswap16
# else
# define cbor_ntohs(x) (((uint16_t)(x) >> 8) | ((uint16_t)(x) << 8))
# define cbor_htons cbor_ntohs
# endif
# else
# define cbor_ntohll
# define cbor_htonll
# define cbor_ntohl
# define cbor_htonl
# define cbor_ntohs
# define cbor_htons
# endif
#elif defined(__sun)
# include <sys/byteorder.h>
#elif defined(_MSC_VER)
/* MSVC, which implies Windows, which implies little-endian and sizeof(long) == 4 */
# include <stdlib.h>
# define cbor_ntohll _byteswap_uint64
# define cbor_htonll _byteswap_uint64
# define cbor_ntohl _byteswap_ulong
# define cbor_htonl _byteswap_ulong
# define cbor_ntohs _byteswap_ushort
# define cbor_htons _byteswap_ushort
#endif
#ifndef cbor_ntohs
# include <arpa/inet.h>
# define cbor_ntohs ntohs
# define cbor_htons htons
#endif
#ifndef cbor_ntohl
# include <arpa/inet.h>
# define cbor_ntohl ntohl
# define cbor_htonl htonl
#endif
#ifndef cbor_ntohll
# define cbor_ntohll ntohll
# define cbor_htonll htonll
/* ntohll isn't usually defined */
# ifndef ntohll
# if (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) || \
(defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN) || \
(defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN) || \
(defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)) || (defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)) || \
defined(__ARMEB__) || defined(__MIPSEB__) || defined(__s390__) || defined(__sparc__)
# define ntohll
# define htonll
# elif (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \
(defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN) || \
(defined(BYTE_ORDER) && defined(LITTLE_ENDIAN) && BYTE_ORDER == LITTLE_ENDIAN) || \
defined(_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN__) || defined(__ARMEL__) || defined(__MIPSEL__) || \
defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__) || defined(__amd64)
# define ntohll(x) ((ntohl((uint32_t)(x)) * UINT64_C(0x100000000)) + (ntohl((x) >> 32)))
# define htonll ntohll
# else
# error "Unable to determine byte order!"
# endif
# endif
#endif
#ifdef __cplusplus
# define CONST_CAST(t, v) const_cast<t>(v)
#else
/* C-style const_cast without triggering a warning with -Wcast-qual */
# define CONST_CAST(t, v) (t)(uintptr_t)(v)
#endif
#ifdef __GNUC__
#ifndef likely
# define likely(x) __builtin_expect(!!(x), 1)
#endif
#ifndef unlikely
# define unlikely(x) __builtin_expect(!!(x), 0)
#endif
# define unreachable() __builtin_unreachable()
#elif defined(_MSC_VER)
# define likely(x) (x)
# define unlikely(x) (x)
# define unreachable() __assume(0)
#else
# define likely(x) (x)
# define unlikely(x) (x)
# define unreachable() do {} while (0)
#endif
static inline bool add_check_overflow(size_t v1, size_t v2, size_t *r) {
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#if ((defined(__GNUC__) && (__GNUC__ >= 5)) && !defined(__INTEL_COMPILER)) || __has_builtin(__builtin_add_overflow)
return __builtin_add_overflow(v1, v2, r);
#else
/* unsigned additions are well-defined */
*r = v1 + v2;
return v1 > v1 + v2;
#endif
}
#endif /* COMPILERSUPPORT_H */