2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Macros for storing and retrieving data in msb first and lsb first order.
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
14 /* RCSID("$OpenBSD: getput.h,v 1.6 2000/12/19 23:17:56 markus Exp $"); */
19 /*------------ macros for storing/extracting msb first words -------------*/
21 #define GET_32BIT(cp) (((u_long)(u_char)(cp)[0] << 24) | \
22 ((u_long)(u_char)(cp)[1] << 16) | \
23 ((u_long)(u_char)(cp)[2] << 8) | \
24 ((u_long)(u_char)(cp)[3]))
26 #define GET_16BIT(cp) (((u_long)(u_char)(cp)[0] << 8) | \
27 ((u_long)(u_char)(cp)[1]))
29 #define PUT_32BIT(cp, value) do { \
30 (cp)[0] = (value) >> 24; \
31 (cp)[1] = (value) >> 16; \
32 (cp)[2] = (value) >> 8; \
33 (cp)[3] = (value); } while (0)
35 #define PUT_16BIT(cp, value) do { \
36 (cp)[0] = (value) >> 8; \
37 (cp)[1] = (value); } while (0)
39 /*------------ macros for storing/extracting lsb first words -------------*/
41 #define GET_32BIT_LSB_FIRST(cp) \
42 (((u_long)(u_char)(cp)[0]) | \
43 ((u_long)(u_char)(cp)[1] << 8) | \
44 ((u_long)(u_char)(cp)[2] << 16) | \
45 ((u_long)(u_char)(cp)[3] << 24))
47 #define GET_16BIT_LSB_FIRST(cp) \
48 (((u_long)(u_char)(cp)[0]) | \
49 ((u_long)(u_char)(cp)[1] << 8))
51 #define PUT_32BIT_LSB_FIRST(cp, value) do { \
53 (cp)[1] = (value) >> 8; \
54 (cp)[2] = (value) >> 16; \
55 (cp)[3] = (value) >> 24; } while (0)
57 #define PUT_16BIT_LSB_FIRST(cp, value) do { \
59 (cp)[1] = (value) >> 8; } while (0)