1 /*      $OpenBSD: getput.h,v 1.8 2002/03/04 17:27:39 stevesk Exp $      */
   2 
   3 #ifndef _GETPUT_H
   4 #define _GETPUT_H
   5 
   6 #pragma ident   "%Z%%M% %I%     %E% SMI"
   7 
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11 
  12 
  13 /*
  14  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  15  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  16  *                    All rights reserved
  17  * Macros for storing and retrieving data in msb first and lsb first order.
  18  *
  19  * As far as I am concerned, the code I have written for this software
  20  * can be used freely for any purpose.  Any derived versions of this
  21  * software must be clearly marked as such, and if the derived work is
  22  * incompatible with the protocol description in the RFC file, it must be
  23  * called by a name other than "ssh" or "Secure Shell".
  24  */
  25 
  26 /*------------ macros for storing/extracting msb first words -------------*/
  27 
  28 #define GET_64BIT(cp) (((u_int64_t)(u_char)(cp)[0] << 56) | \
  29                        ((u_int64_t)(u_char)(cp)[1] << 48) | \
  30                        ((u_int64_t)(u_char)(cp)[2] << 40) | \
  31                        ((u_int64_t)(u_char)(cp)[3] << 32) | \
  32                        ((u_int64_t)(u_char)(cp)[4] << 24) | \
  33                        ((u_int64_t)(u_char)(cp)[5] << 16) | \
  34                        ((u_int64_t)(u_char)(cp)[6] << 8) | \
  35                        ((u_int64_t)(u_char)(cp)[7]))
  36 
  37 #define GET_32BIT(cp) (((u_long)(u_char)(cp)[0] << 24) | \
  38                        ((u_long)(u_char)(cp)[1] << 16) | \
  39                        ((u_long)(u_char)(cp)[2] << 8) | \
  40                        ((u_long)(u_char)(cp)[3]))
  41 
  42 #define GET_16BIT(cp) (((u_long)(u_char)(cp)[0] << 8) | \
  43                        ((u_long)(u_char)(cp)[1]))
  44 
  45 #define PUT_64BIT(cp, value) do { \
  46   (cp)[0] = (value) >> 56; \
  47   (cp)[1] = (value) >> 48; \
  48   (cp)[2] = (value) >> 40; \
  49   (cp)[3] = (value) >> 32; \
  50   (cp)[4] = (value) >> 24; \
  51   (cp)[5] = (value) >> 16; \
  52   (cp)[6] = (value) >> 8; \
  53   (cp)[7] = (value); } while (0)
  54 
  55 #define PUT_32BIT(cp, value) do { \
  56   (cp)[0] = (value) >> 24; \
  57   (cp)[1] = (value) >> 16; \
  58   (cp)[2] = (value) >> 8; \
  59   (cp)[3] = (value); } while (0)
  60 
  61 #define PUT_16BIT(cp, value) do { \
  62   (cp)[0] = (value) >> 8; \
  63   (cp)[1] = (value); } while (0)
  64 
  65 #ifdef __cplusplus
  66 }
  67 #endif
  68 
  69 #endif /* _GETPUT_H */