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/* Netfilter Driver for IPSec VPN Client
*
* Copyright(c) 2012 Samsung Electronics
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* sshgetput.h
*
* Macros for enconding/decoding of integers to character data.
*
*/
#ifndef SSHGETPUT_H
#define SSHGETPUT_H
#define SSH_GET_8BIT(cp) (*(unsigned char *)(cp))
#define SSH_PUT_8BIT(cp, value) (*(unsigned char *)(cp)) = \
(unsigned char)(value)
#define SSH_GET_4BIT_LOW(cp) (*(unsigned char *)(cp) & 0x0f)
#define SSH_GET_4BIT_HIGH(cp) ((*(unsigned char *)(cp) >> 4) & 0x0f)
#define SSH_PUT_4BIT_LOW(cp, value) (*(unsigned char *)(cp) = \
(unsigned char)((*(unsigned char *)(cp) & 0xf0) | ((value) & 0x0f)))
#define SSH_PUT_4BIT_HIGH(cp, value) (*(unsigned char *)(cp) = \
(unsigned char)((*(unsigned char *)(cp) & 0x0f) | (((value) & 0x0f) << 4)))
#ifdef SSHUINT64_IS_64BITS
#define SSH_GET_64BIT(cp) (((SshUInt64)SSH_GET_32BIT((cp)) << 32) | \
((SshUInt64)SSH_GET_32BIT((cp) + 4)))
#define SSH_PUT_64BIT(cp, value) do { \
SSH_PUT_32BIT((cp), (SshUInt32)((SshUInt64)(value) >> 32)); \
SSH_PUT_32BIT((cp) + 4, (SshUInt32)(value)); } while (0)
#else /* SSHUINT64_IS_64BITS */
#define SSH_GET_64BIT(cp) ((SshUInt64)SSH_GET_32BIT((cp) + 4))
#define SSH_PUT_64BIT(cp, value) do { \
SSH_PUT_32BIT((cp), 0L); \
SSH_PUT_32BIT((cp) + 4, (SshUInt32)(value)); } while (0)
#define SSH_GET_64BIT_LSB_FIRST(cp) ((SshUInt64)SSH_GET_32BIT((cp)))
#define SSH_PUT_64BIT_LSB_FIRST(cp, value) do { \
SSH_PUT_32BIT_LSB_FIRST((cp), (SshUInt32)(value)); \
SSH_PUT_32BIT_LSB_FIRST((cp) + 4, 0L); } while (0)
#define SSH_GET_40BIT(cp) ((SshUInt64)SSH_GET_32BIT((cp) + 1))
#define SSH_PUT_40BIT(cp, value) do { \
SSH_PUT_8BIT((cp), 0); \
SSH_PUT_32BIT((cp) + 1, (SshUInt32)(value)); } while (0)
#define SSH_GET_40BIT_LSB_FIRST(cp) ((SshUInt64)SSH_GET_32BIT_LSB_FIRST((cp)))
#define SSH_PUT_40BIT_LSB_FIRST(cp, value) do { \
SSH_PUT_32BIT_LSB_FIRST((cp), (SshUInt32)(value)); \
SSH_PUT_8BIT((cp) + 4, 0); } while (0)
#endif /* SSHUINT64_IS_64BITS */
/*------------ macros for storing/extracting msb first words -------------*/
#define SSH_GET_32BIT(cp) \
((((unsigned long)((unsigned char *)(cp))[0]) << 24) | \
(((unsigned long)((unsigned char *)(cp))[1]) << 16) | \
(((unsigned long)((unsigned char *)(cp))[2]) << 8) | \
((unsigned long)((unsigned char *)(cp))[3]))
#define SSH_GET_16BIT(cp) \
((SshUInt16) ((((unsigned long)((unsigned char *)(cp))[0]) << 8) | \
((unsigned long)((unsigned char *)(cp))[1])))
#define SSH_PUT_32BIT(cp, value) do { \
((unsigned char *)(cp))[0] = (unsigned char)((value) >> 24); \
((unsigned char *)(cp))[1] = (unsigned char)((value) >> 16); \
((unsigned char *)(cp))[2] = (unsigned char)((value) >> 8); \
((unsigned char *)(cp))[3] = (unsigned char)(value); } while (0)
#define SSH_PUT_16BIT(cp, value) do { \
((unsigned char *)(cp))[0] = (unsigned char)((value) >> 8); \
((unsigned char *)(cp))[1] = (unsigned char)(value); } while (0)
/*------------ macros for storing/extracting lsb first words -------------*/
#define SSH_GET_32BIT_LSB_FIRST(cp) \
(((unsigned long)((unsigned char *)(cp))[0]) | \
(((unsigned long)((unsigned char *)(cp))[1]) << 8) | \
(((unsigned long)((unsigned char *)(cp))[2]) << 16) | \
(((unsigned long)((unsigned char *)(cp))[3]) << 24))
#define SSH_GET_16BIT_LSB_FIRST(cp) \
((SshUInt16) (((unsigned long)((unsigned char *)(cp))[0]) | \
(((unsigned long)((unsigned char *)(cp))[1]) << 8)))
#define SSH_PUT_32BIT_LSB_FIRST(cp, value) do { \
((unsigned char *)(cp))[0] = (unsigned char)(value); \
((unsigned char *)(cp))[1] = (unsigned char)((value) >> 8); \
((unsigned char *)(cp))[2] = (unsigned char)((value) >> 16); \
((unsigned char *)(cp))[3] = (unsigned char)((value) >> 24); } while (0)
#define SSH_PUT_16BIT_LSB_FIRST(cp, value) do { \
((unsigned char *)(cp))[0] = (unsigned char)(value); \
((unsigned char *)(cp))[1] = (unsigned char)((value) >> 8); } while (0)
#endif /* GETPUT_H */
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