Return to endian.h CVS log

Up to [local] / sys / arch / vax / include

Annotation of sys/arch/vax/include/endian.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: endian.h,v 1.13 2005/12/13 00:35:23 millert Exp $     */
                      2:
                      3: /*-
                      4:  * Copyright (c) 1997 Niklas Hallqvist.  All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     17:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     18:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     19:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     20:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     21:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     22:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     23:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     24:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     25:  */
                     26:
                     27: #ifndef _VAX_ENDIAN_H_
                     28: #define _VAX_ENDIAN_H_
                     29:
                     30: #ifdef __GNUC__
                     31:
                     32: #define        __swap64md      __swap64gen
                     33:
                     34: #define        __swap32md(x) ({                                                \
                     35:        u_int32_t __swap32md_y, __swap32md_x = (x);                     \
                     36:                                                                        \
                     37:        __asm ("rotl $-8, %1, %0; insv %0, $16, $8, %0; "               \
                     38:            "rotl $8, %1, r1; movb r1, %0" :                            \
                     39:            "&=r" (__swap32md_y) : "r" (__swap32md_x) : "r1", "cc");    \
                     40:        __swap32md_y;                                                   \
                     41: })
                     42:
                     43: #define __swap16md(x) ({                                               \
                     44:        u_int16_t __swap16md_y, __swap16md_x = (x);                     \
                     45:                                                                        \
                     46:        __asm ("rotl $8, %1, %0; rotl $-8, %1, r1; movb r1, %0; "       \
                     47:            "movzwl %0, %0" :                                           \
                     48:            "&=r" (__swap16md_y) : "r" (__swap16md_x) : "r1", "cc");    \
                     49:        __swap16md_y;                                                   \
                     50: })
                     51:
                     52: /* Tell sys/endian.h we have MD variants of the swap macros.  */
                     53: #ifdef notyet
                     54: #define MD_SWAP
                     55: #endif
                     56:
                     57: #endif /* __GNUC__ */
                     58:
                     59: #define _BYTE_ORDER _LITTLE_ENDIAN
                     60: #include <sys/endian.h>
                     61:
                     62: #endif /* _VAX_ENDIAN_H_ */