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Use x86-64 bits/byteswap.h for both i386 and x86_64
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H.J. Lu
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12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
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2012-05-30 H.J. Lu <hongjiu.lu@intel.com>
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[BZ #14117]
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* sysdeps/i386/bits/byteswap.h: Removed.
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* sysdeps/i386/bits/byteswap-16.h: Likewise.
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* sysdeps/x86_64/bits/byteswap.h: Renamed to ...
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* sysdeps/x86/bits/byteswap.h: This.
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* sysdeps/x86_64/bits/byteswap-16.h: Renamed to ...
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* sysdeps/x86/bits/byteswap-16.h: This.
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* sysdeps/i386/Implies: Add x86.
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* sysdeps/x86_64/Implies: Likewise.
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2012-05-30 David S. Miller <davem@davemloft.net>
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* soft-fp/soft-fp.h (FP_CUR_EXCEPTIONS): Define.
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@ -1,3 +1,4 @@
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x86
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wordsize-32
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ieee754/ldbl-96
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ieee754/dbl-64
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@ -1,126 +0,0 @@
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/* Macros to swap the order of bytes in integer values.
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Copyright (C) 1997-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
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# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
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#endif
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#ifndef _BITS_BYTESWAP_H
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#define _BITS_BYTESWAP_H 1
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/* Swap bytes in 16 bit value. */
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#define __bswap_constant_16(x) \
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((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
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/* Get __bswap_16. */
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#include <bits/byteswap-16.h>
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/* Swap bytes in 32 bit value. */
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#define __bswap_constant_32(x) \
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((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
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(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
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#ifdef __GNUC__
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# if __GNUC__ >= 2
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/* To swap the bytes in a word the i486 processors and up provide the
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`bswap' opcode. On i386 we have to use three instructions. */
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# if !defined __i486__ && !defined __pentium__ && !defined __pentiumpro__ \
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&& !defined __pentium4__ && !defined __k8__ && !defined __athlon__ \
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&& !defined __k6__ && !defined __nocona__ && !defined __core2__ \
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&& !defined __geode__ && !defined __amdfam10__
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# define __bswap_32(x) \
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(__extension__ \
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({ register unsigned int __v, __x = (x); \
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if (__builtin_constant_p (__x)) \
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__v = __bswap_constant_32 (__x); \
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else \
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__asm__ ("rorw $8, %w0;" \
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"rorl $16, %0;" \
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"rorw $8, %w0" \
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: "=r" (__v) \
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: "0" (__x) \
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: "cc"); \
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__v; }))
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# else
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# define __bswap_32(x) \
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(__extension__ \
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({ register unsigned int __v, __x = (x); \
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if (__builtin_constant_p (__x)) \
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__v = __bswap_constant_32 (__x); \
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else \
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__asm__ ("bswap %0" : "=r" (__v) : "0" (__x)); \
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__v; }))
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# endif
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# else
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# define __bswap_32(x) \
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(__extension__ \
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({ register unsigned int __x = (x); __bswap_constant_32 (__x); }))
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# endif
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#else
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static __inline unsigned int
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__bswap_32 (unsigned int __bsx)
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{
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return __bswap_constant_32 (__bsx);
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}
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#endif
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#if defined __GNUC__ && __GNUC__ >= 2
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/* Swap bytes in 64 bit value. */
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# define __bswap_constant_64(x) \
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(__extension__ ((((x) & 0xff00000000000000ull) >> 56) \
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| (((x) & 0x00ff000000000000ull) >> 40) \
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| (((x) & 0x0000ff0000000000ull) >> 24) \
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| (((x) & 0x000000ff00000000ull) >> 8) \
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| (((x) & 0x00000000ff000000ull) << 8) \
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| (((x) & 0x0000000000ff0000ull) << 24) \
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| (((x) & 0x000000000000ff00ull) << 40) \
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| (((x) & 0x00000000000000ffull) << 56)))
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# define __bswap_64(x) \
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(__extension__ \
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({ union { __extension__ unsigned long long int __ll; \
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unsigned long int __l[2]; } __w, __r; \
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if (__builtin_constant_p (x)) \
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__r.__ll = __bswap_constant_64 (x); \
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else \
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{ \
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__w.__ll = (x); \
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__r.__l[0] = __bswap_32 (__w.__l[1]); \
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__r.__l[1] = __bswap_32 (__w.__l[0]); \
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} \
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__r.__ll; }))
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#elif __GLIBC_HAVE_LONG_LONG
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# define __bswap_constant_64(x) \
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((((x) & 0xff00000000000000ull) >> 56) \
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| (((x) & 0x00ff000000000000ull) >> 40) \
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| (((x) & 0x0000ff0000000000ull) >> 24) \
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| (((x) & 0x000000ff00000000ull) >> 8) \
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| (((x) & 0x00000000ff000000ull) << 8) \
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| (((x) & 0x0000000000ff0000ull) << 24) \
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| (((x) & 0x000000000000ff00ull) << 40) \
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| (((x) & 0x00000000000000ffull) << 56))
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static __inline unsigned long long int
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__bswap_64 (unsigned long long int __bsx)
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{
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return __bswap_constant_64 (__bsx);
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}
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#endif
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#endif /* _BITS_BYTESWAP_H */
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@ -1,3 +1,4 @@
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x86
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ieee754/ldbl-96
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ieee754/dbl-64/wordsize-64
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ieee754/dbl-64
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@ -1,49 +0,0 @@
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/* Macros to swap the order of bytes in 16-bit integer values.
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Copyright (C) 2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _BITS_BYTESWAP_H
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# error "Never use <bits/byteswap-16.h> directly; include <byteswap.h> instead."
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#endif
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#ifdef __GNUC__
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# if __GNUC__ >= 2
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# define __bswap_16(x) \
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(__extension__ \
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({ register unsigned short int __v, __x = (unsigned short int) (x); \
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if (__builtin_constant_p (__x)) \
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__v = __bswap_constant_16 (__x); \
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else \
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__asm__ ("rorw $8, %w0" \
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: "=r" (__v) \
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: "0" (__x) \
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: "cc"); \
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__v; }))
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# else
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/* This is better than nothing. */
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# define __bswap_16(x) \
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(__extension__ \
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({ register unsigned short int __x = (unsigned short int) (x); \
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__bswap_constant_16 (__x); }))
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# endif
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#else
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static __inline unsigned short int
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__bswap_16 (unsigned short int __bsx)
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{
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return __bswap_constant_16 (__bsx);
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}
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#endif
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