Annotation of src/usr.bin/ssh/getput.h, Revision 1.5
1.1 deraadt 1: /*
1.2 deraadt 2: * Author: Tatu Ylonen <ylo@cs.hut.fi>
3: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4: * All rights reserved
5: * Macros for storing and retrieving data in msb first and lsb first order.
1.3 markus 6: *
1.5 ! deraadt 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".
1.2 deraadt 12: */
1.1 deraadt 13:
1.5 ! deraadt 14: /* RCSID("$OpenBSD: getput.h,v 1.4 2000/06/20 01:39:41 markus Exp $"); */
1.1 deraadt 15:
16: #ifndef GETPUT_H
17: #define GETPUT_H
18:
19: /*------------ macros for storing/extracting msb first words -------------*/
20:
21: #define GET_32BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 24) | \
1.3 markus 22: ((unsigned long)(unsigned char)(cp)[1] << 16) | \
1.1 deraadt 23: ((unsigned long)(unsigned char)(cp)[2] << 8) | \
24: ((unsigned long)(unsigned char)(cp)[3]))
25:
26: #define GET_16BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 8) | \
27: ((unsigned long)(unsigned char)(cp)[1]))
28:
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)
34:
35: #define PUT_16BIT(cp, value) do { \
36: (cp)[0] = (value) >> 8; \
37: (cp)[1] = (value); } while (0)
38:
39: /*------------ macros for storing/extracting lsb first words -------------*/
40:
41: #define GET_32BIT_LSB_FIRST(cp) \
42: (((unsigned long)(unsigned char)(cp)[0]) | \
43: ((unsigned long)(unsigned char)(cp)[1] << 8) | \
44: ((unsigned long)(unsigned char)(cp)[2] << 16) | \
45: ((unsigned long)(unsigned char)(cp)[3] << 24))
46:
47: #define GET_16BIT_LSB_FIRST(cp) \
48: (((unsigned long)(unsigned char)(cp)[0]) | \
49: ((unsigned long)(unsigned char)(cp)[1] << 8))
50:
51: #define PUT_32BIT_LSB_FIRST(cp, value) do { \
52: (cp)[0] = (value); \
53: (cp)[1] = (value) >> 8; \
54: (cp)[2] = (value) >> 16; \
55: (cp)[3] = (value) >> 24; } while (0)
56:
57: #define PUT_16BIT_LSB_FIRST(cp, value) do { \
58: (cp)[0] = (value); \
59: (cp)[1] = (value) >> 8; } while (0)
60:
1.2 deraadt 61: #endif /* GETPUT_H */