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Config.h performs endianess detection including OS-specific headers to define the endianess macros, or when this is not possible, checking the processor type via ifdefs. Sometimes when the OS-specific macro is included, only __BYTE_ORDER is defined, while BYTE_ORDER remains undefined. There is code at the end of config.h endianess detection in order to define the macros without the underscore, but it was not working correctly. This commit fixes endianess detection fixing Redis on Linux / PPC64 and possibly other systems.
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
/* See endianconv.c top comments for more information
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*
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* ----------------------------------------------------------------------------
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*
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* Copyright (c) 2011-2012, Salvatore Sanfilippo <antirez at gmail dot com>
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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 are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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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 the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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#ifndef __ENDIANCONV_H
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#define __ENDIANCONV_H
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#include "config.h"
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#include <stdint.h>
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void memrev16(void *p);
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void memrev32(void *p);
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void memrev64(void *p);
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uint16_t intrev16(uint16_t v);
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uint32_t intrev32(uint32_t v);
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uint64_t intrev64(uint64_t v);
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/* variants of the function doing the actual convertion only if the target
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* host is big endian */
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#if (BYTE_ORDER == LITTLE_ENDIAN)
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#define memrev16ifbe(p)
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#define memrev32ifbe(p)
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#define memrev64ifbe(p)
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#define intrev16ifbe(v) (v)
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#define intrev32ifbe(v) (v)
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#define intrev64ifbe(v) (v)
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#else
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#define memrev16ifbe(p) memrev16(p)
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#define memrev32ifbe(p) memrev32(p)
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#define memrev64ifbe(p) memrev64(p)
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#define intrev16ifbe(v) intrev16(v)
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#define intrev32ifbe(v) intrev32(v)
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#define intrev64ifbe(v) intrev64(v)
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#endif
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#endif
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