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 */ 70