Add bswap{16,32,64} functions to libutil. Because of this, bump minor.
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bouyer
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9f50fca1fd
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50660fb787
@ -1,14 +1,14 @@
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# $NetBSD: Makefile,v 1.17 1997/11/16 22:15:54 christos Exp $
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# $NetBSD: Makefile,v 1.18 1998/03/18 16:40:45 bouyer Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/4/93
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LIB= util
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CPPFLAGS+=-DLIBC_SCCS
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SRCS= fparseln.c getmaxpartitions.c getrawpartition.c login.c login_tty.c \
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logout.c logwtmp.c opendisk.c passwd.c pidlock.c pty.c ttyaction.c \
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ttymsg.c
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ttymsg.c bswap.c
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MAN= fparseln.3 getmaxpartitions.3 getrawpartition.3 login.3 opendisk.3 \
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openpty.3 pidlock.3 pw_init.3 pw_lock.3 ttyaction.3 ttymsg.3
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openpty.3 pidlock.3 pw_init.3 pw_lock.3 ttyaction.3 ttymsg.3 bswap.3
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MLINKS+=login.3 logout.3
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MLINKS+=login.3 logwtmp.3
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@ -23,5 +23,8 @@ MLINKS+=pw_lock.3 pw_mkdb.3
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MLINKS+=pw_lock.3 pw_abort.3
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MLINKS+=pidlock.3 ttylock.3
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MLINKS+=pidlock.3 ttyunlock.3
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MLINKS+=bswap.3 bswap16.3
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MLINKS+=bswap.3 bswap32.3
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MLINKS+=bswap.3 bswap64.3
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.include <bsd.lib.mk>
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64
lib/libutil/bswap.3
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64
lib/libutil/bswap.3
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@ -0,0 +1,64 @@
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.\" $NetBSD: bswap.3,v 1.1 1998/03/18 16:40:45 bouyer Exp $
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.\"
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.\"
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.\" Copyright (c) 1998 Manuel Bouyer.
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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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.\" 1. 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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.\" 2. 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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" 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 REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd March 17, 1998
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.Dt bswap 3
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.Os NetBSD 1.4
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.Sh NAME
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.Nm bswap16 ,
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.Nm bswap32 ,
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.Nm bswap64
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.Nd byte-order swapping functions
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.Sh LIBRARY
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.Lb libutil
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.Sh SYNOPSIS
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.Fd #include <sys/types.h>
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.Fd #include <machine/endian.h>
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.Ft u_int16_t
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.Fn bswap16 "u_int16_t"
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.Ft u_int32
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.Fn bswap32 "u_int16_t"
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.Ft u_int64
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.Fn bswap64 "u_int16_t"
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.Sh DESCRIPTION
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The
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.Fn bswap16 ,
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.Fn bswap32 ,
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and
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.Fn bswap64
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function return the value of their argument with the bytes inverted.
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They can be used to convert 16, 32 or 64 bits intergers from little to big
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endian, or vice-versa.
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.Sh SEE ALSO
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.Xr byteorder 3
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48
lib/libutil/bswap.c
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48
lib/libutil/bswap.c
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/* $NetBSD: bswap.c,v 1.1 1998/03/18 16:40:45 bouyer Exp $ */
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/*
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* Written by Manuel Bouyer <bouyer@netbsd.org>.
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* Public domain.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: bswap.c,v 1.1 1998/03/18 16:40:45 bouyer Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#undef bswap64
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#ifndef bswap16
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u_int16_t
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bswap16(x)
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u_int16_t x;
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{
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return ((x << 8) & 0xff00) | ((x >> 8) & 0x00ff);
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}
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#endif
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#ifndef bswap32
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u_int32_t
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bswap32(x)
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u_int32_t x;
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{
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return ((x << 24) & 0xff000000 ) |
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((x << 8) & 0x00ff0000 ) |
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((x >> 8) & 0x0000ff00 ) |
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((x >> 24) & 0x000000ff );
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}
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#endif
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u_int64_t
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bswap64(x)
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u_int64_t x;
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{
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u_int32_t *p = (u_int32_t*)&x;
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u_int32_t t;
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t = bswap32(p[0]);
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p[0] = bswap32(p[1]);
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p[1] = t;
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return x;
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}
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@ -1,4 +1,4 @@
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# $NetBSD: shlib_version,v 1.12 1998/01/05 07:41:20 perry Exp $
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# $NetBSD: shlib_version,v 1.13 1998/03/18 16:40:45 bouyer Exp $
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#
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major=4
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minor=3
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minor=4
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