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Add __bswap_64 definition for non GCC compilers.

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[BZ#13926]
Currently __bswap_64 is not defined at all for non-GCC compilers.
Define it but guard it with __GLIBC_HAVE_LONG_LONG.

endian.h uses __bswap_64, make the functions only available
if __GLIBC_HAVE_LONG_LONG is defined.
This commit is contained in:
Andreas Jaeger
2012-03-28 16:39:25 +02:00
parent 39c59c3572
commit b1aa60f32d
8 changed files with 98 additions and 28 deletions
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6
string/byteswap.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1997 Free Software Foundation, Inc.
/* Copyright (C) 1997, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -18,6 +18,8 @@
#ifndef _BYTESWAP_H
#define _BYTESWAP_H 1
#include <features.h>
/* Get the machine specific, optimized definitions. */
#include <bits/byteswap.h>
@ -31,7 +33,7 @@
/* Return a value with all bytes in the 32 bit argument swapped. */
#define bswap_32(x) __bswap_32 (x)
#if defined __GNUC__ && __GNUC__ >= 2
#if __GLIBC_HAVE_LONG_LONG
/* Return a value with all bytes in the 64 bit argument swapped. */
# define bswap_64(x) __bswap_64 (x)
#endif