4950607607
Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/*
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* Copyright 2017 Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _BSD_ENDIAN_H_
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#define _BSD_ENDIAN_H_
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#include_next <endian.h>
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#include <features.h>
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#ifdef _DEFAULT_SOURCE
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#include <config/HaikuConfig.h>
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#include <support/ByteOrder.h>
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#include <support/SupportDefs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* General byte order swapping functions.
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*/
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#define bswap16(x) __swap_int16(x)
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#define bswap32(x) __swap_int32(x)
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#define bswap64(x) __swap_int64(x)
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/*
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* Host to big endian, host to little endian, big endian to host, and little
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* endian to host byte order functions as detailed in byteorder(9).
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*/
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define htobe16(x) bswap16((x))
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#define htobe32(x) bswap32((x))
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#define htobe64(x) bswap64((x))
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#define htole16(x) ((uint16_t)(x))
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#define htole32(x) ((uint32_t)(x))
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#define htole64(x) ((uint64_t)(x))
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#define be16toh(x) bswap16((x))
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#define be32toh(x) bswap32((x))
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#define be64toh(x) bswap64((x))
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#define le16toh(x) ((uint16_t)(x))
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#define le32toh(x) ((uint32_t)(x))
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#define le64toh(x) ((uint64_t)(x))
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#else /* BYTE_ORDER != LITTLE_ENDIAN */
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#define htobe16(x) ((uint16_t)(x))
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#define htobe32(x) ((uint32_t)(x))
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#define htobe64(x) ((uint64_t)(x))
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#define htole16(x) bswap16((x))
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#define htole32(x) bswap32((x))
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#define htole64(x) bswap64((x))
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#define be16toh(x) ((uint16_t)(x))
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#define be32toh(x) ((uint32_t)(x))
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#define be64toh(x) ((uint64_t)(x))
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#define le16toh(x) bswap16((x))
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#define le32toh(x) bswap32((x))
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#define le64toh(x) bswap64((x))
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#endif /* BYTE_ORDER == LITTLE_ENDIAN */
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/* Alignment-agnostic encode/decode bytestream to/from little/big endian. */
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static __inline uint32_t
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be32dec(const void *pp)
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{
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uint8_t const *p = (uint8_t const *)pp;
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return (((unsigned)p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
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}
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static __inline uint64_t
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be64dec(const void *pp)
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{
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uint8_t const *p = (uint8_t const *)pp;
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return (((uint64_t)be32dec(p) << 32) | be32dec(p + 4));
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}
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static __inline void
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be32enc(void *pp, uint32_t u)
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{
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uint8_t *p = (uint8_t *)pp;
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p[0] = (u >> 24) & 0xff;
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p[1] = (u >> 16) & 0xff;
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p[2] = (u >> 8) & 0xff;
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p[3] = u & 0xff;
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}
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static __inline void
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be64enc(void *pp, uint64_t u)
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{
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uint8_t *p = (uint8_t *)pp;
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be32enc(p, (uint32_t)(u >> 32));
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be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif /* _BSD_ENDIAN_H_ */
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