From 1522c3682ccf373e9d393ca73350be284fcf773b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 24 Jul 1997 01:36:01 +0000 Subject: Update. 1997-07-24 03:14 Ulrich Drepper * elf/dl-deps.c: Complete rewrite to handle DT_AUXILIARY correctly. * inet/Makefile (tests): Add htontest. * inet/htontest.c: New file. * inet/netinet/in.h: Cleanup optimization of ntoh/hton functions when they are no noops. * sysdeps/alpha/htonl.S: Don't define __ protected names. * sysdeps/alpha/htons.S: Likewise. * sysdeps/generic/htonl.c: Likewise. * sysdeps/generic/htons.c: Likewise. * sysdeps/i386/htonl.S: Likewise. * sysdeps/i386/htons.S: Likewise. * sysdeps/i386/i486/htonl.S: Likewise. * sysdeps/vax/htonl.s: Likewise. * sysdeps/vax/htons.s: Likewise. * string/Makefile (headers): Add byteswap.h and bits/byteswap.h. * string/byteswap.h: New file. * sysdeps/generic/bits/byteswap.h: New file. * sysdeps/i386/bits/byteswap.h: New file. * sysdeps/generic/bits/htontoh.h: Removed. * sysdeps/i386/bits/htontoh.h: Removed. * misc/search.h: General cleanup. Don't define reentrant hsearch functions uless __USE_GNU. * nss/nsswitch.c: Pretty print. * sunrpc/clnt_udp.c (clntudp_call): Initialize outlen to prevent warning. * sysdeps/unix/i386/sysdep.h (DO_CALL): Use lcall, binutils have been fixed meanwhile. Reported by Zack Weinberg . 1997-07-24 00:53 Philip Blundell * db/hash/hash.c (init_hash): Only use statbuf.st_blksize if it exists for this port. 1997-07-24 00:12 Philip Blundell * sysdeps/standalone/arm/bits/errno.h (ESTALE): Add. 1997-07-22 Andreas Schwab * manual/argp.texi (Argp Option Vectors): Use @minus, not @math, to format a proper minus sign. 1997-07-22 Andreas Schwab * sysdeps/m68k/fpu/fraiseexcpt.c: Don't handle FE_INEXACT specially, the standard doesn't require it. * math/test-fenv.c (test_exceptions): Add IGNORE_INEXACT argument, if non-zero then don't test inexact flag. Callers changed. (set_single_exc): Ignore inexact flag if underflow or overflow exception is raised. 1997-07-23 05:10 Ulrich Drepper * sysdeps/unix/sysv/linux/sys/fsuid.h: New file. Provided by Michael Deutschmann . * sysdeps/unix/sysv/linux/Makefile (headers): Add sys/fsuid.h. * sysdeps/unix/sysv/linux/Dist: Add sys/fsuid.h. 1997-07-16 10:09 Fila Kolodny * resolv/gethnamaddr.c: Define MAXHOSTNAMELEN as 256, since RFC 1034 and 1035 state that a fully qualified domain name cannot exceed 255 octets in length. * resolv/nss_dns/dns-host.c: Likewise. 1997-07-22 09:54 H.J. Lu * inet/netinet/in.h (htons): Fix typos. * sysdeps/i386/bits/htontoh.h (__ntohs): Return the value. 1997-07-22 11:47 Ulrich Drepper * nss/nsswitch.c (nss_lookup_function): Include function.def, not functions.def. Patch by Klaus Espenlaub . --- bits/byteswap.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 bits/byteswap.h (limited to 'bits') diff --git a/bits/byteswap.h b/bits/byteswap.h new file mode 100644 index 0000000000..9404cc452e --- /dev/null +++ b/bits/byteswap.h @@ -0,0 +1,43 @@ +/* Macros to swap the order of bytes in integer values. + Copyright (C) 1997 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 + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _BITS_BYTESWAP_H +#define _BITS_BYTESWAP_H 1 + +/* Swap bytes in 16 bit value. */ +#define __bswap_16(x) \ + ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) + +/* Swap bytes in 32 bit value. */ +#define __bswap_32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) + +#if defined __GNUC__ && __GNUC__ >= 2 +/* Swap bytes in 64 bit value. */ +# define __bswap_64(x) \ + ({ union { unsigned long long int __ll; \ + unsigned long int __l[2]; } __v, __r; \ + __v.__ll = (x); \ + __r.__l[0] = __bswap_32 (__v.__l[1]); \ + __r.__l[1] = __bswap_32 (__v.__l[0]); \ + __r.__ll; }) +#endif + +#endif /* bits/byteswap.h */ -- cgit 1.4.1