From 0934f142036f12292711770d353f1c01ab718db7 Mon Sep 17 00:00:00 2001 From: "\"Jan-Benedict Glaw\"" Date: Fri, 27 Jan 2006 21:20:28 +0000 Subject: First round of VAX patches. This isn't complete right now, there are for sure still bugs (properly hidden, of course), a libm is completely missing (I've got one that implements some basic stuff, but that's really not ready for checking in...) I've also got a list of other things that need touch-ups, but that's mostly minor stuff that'll be done during the next days. --- libc/sysdeps/linux/vax/bits/byteswap.h | 64 ++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 libc/sysdeps/linux/vax/bits/byteswap.h (limited to 'libc/sysdeps/linux/vax/bits/byteswap.h') diff --git a/libc/sysdeps/linux/vax/bits/byteswap.h b/libc/sysdeps/linux/vax/bits/byteswap.h new file mode 100644 index 000000000..6b5115658 --- /dev/null +++ b/libc/sysdeps/linux/vax/bits/byteswap.h @@ -0,0 +1,64 @@ +/* Macros to swap the order of bytes in integer values. + Copyright (C) 1997, 1998 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. */ + +#if !defined _BYTESWAP_H && !defined _NETINET_IN_H +# error "Never use directly; include instead." +#endif + +/* Swap bytes in 16 bit value. */ +#ifdef __GNUC__ +# define __bswap_16(x) \ + (__extension__ \ + ({ unsigned short int __bsx = (x); \ + ((((__bsx) >> 8) & 0xff) | (((__bsx) & 0xff) << 8)); })) +#else +static __inline unsigned short int +__bswap_16 (unsigned short int __bsx) +{ + return ((((__bsx) >> 8) & 0xff) | (((__bsx) & 0xff) << 8)); +} +#endif + +/* Swap bytes in 32 bit value. */ +#ifdef __GNUC__ +# define __bswap_32(x) \ + (__extension__ \ + ({ unsigned int __bsx = (x); \ + ((((__bsx) & 0xff000000) >> 24) | (((__bsx) & 0x00ff0000) >> 8) | \ + (((__bsx) & 0x0000ff00) << 8) | (((__bsx) & 0x000000ff) << 24)); })) +#else +static __inline unsigned int +__bswap_32 (unsigned int __bsx) +{ + return ((((__bsx) & 0xff000000) >> 24) | (((__bsx) & 0x00ff0000) >> 8) | + (((__bsx) & 0x0000ff00) << 8) | (((__bsx) & 0x000000ff) << 24)); +} +#endif + +#if defined __GNUC__ && __GNUC__ >= 2 +/* Swap bytes in 64 bit value. */ +# define __bswap_64(x) \ + (__extension__ \ + ({ 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 -- cgit v1.2.3