98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
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/*!
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* \copy
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* Copyright (c) 2013, Cisco Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef ___LD_ST_MACROS___
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#define ___LD_ST_MACROS___
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#include <string.h>
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#include "typedefs.h"
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#ifdef __GNUC__
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struct tagUnaligned_64 { uint64_t l; } __attribute__((packed));
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struct tagUnaligned_32 { uint32_t l; } __attribute__((packed));
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struct tagUnaligned_16 { uint16_t l; } __attribute__((packed));
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#define LD16(a) (((struct tagUnaligned_16 *) (a))->l)
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#define LD32(a) (((struct tagUnaligned_32 *) (a))->l)
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//#define LD64(a) (((struct tagUnaligned_64 *) (a))->l)
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inline uint64_t LD64(const void * a)
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{
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uint64_t v;
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memcpy(&v, a, sizeof(v)); // confirmed_safe_unsafe_usage
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return v;
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}
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//#define _USE_STRUCT_INT_CVT
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// #ifdef _USE_STRUCT_INT_CVT
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#define ST16(a, b) (((struct tagUnaligned_16 *) (a))->l) = (b)
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#define ST32(a, b) (((struct tagUnaligned_32 *) (a))->l) = (b)
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//#define ST64(a, b) (((struct tagUnaligned_64 *) (a))->l) = (b)
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inline void ST64(void * a, uint64_t b)
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{
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memcpy(a, &b, sizeof(b)); // confirmed_safe_unsafe_usage
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}
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// #else
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// inline void __ST16(void *dst, uint16_t v) { memcpy(dst, &v, 2); }
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// inline void __ST32(void *dst, uint32_t v) { memcpy(dst, &v, 4); }
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//inline void __ST64(void *dst, uint64_t v) { memcpy(dst, &v, 8); }
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// #endif
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#else
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//#define INTD16(a) (*((int16_t*)(a)))
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//#define INTD32(a) (*((int32_t*)(a)))
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//#define INTD64(a) (*((int64_t*)(a)))
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#define LD16(a) (*((uint16_t*)(a)))
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#define LD32(a) (*((uint32_t*)(a)))
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#define LD64(a) (*((uint64_t*)(a)))
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#define ST16(a, b) *((uint16_t*)(a)) = (b)
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#define ST32(a, b) *((uint32_t*)(a)) = (b)
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#define ST64(a, b) *((uint64_t*)(a)) = (b)
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#endif /* !__GNUC__ */
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#ifndef INTD16
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#define INTD16 LD16
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#endif//INTD16
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#ifndef INTD32
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#define INTD32 LD32
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#endif//INTD32
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#ifndef INTD64
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#define INTD64 LD64
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#endif//INTD64
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#endif
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