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// This file was extracted from the TCG Published
// Trusted Platform Module Library
// Part 4: Supporting Routines
// Family "2.0"
// Level 00 Revision 01.16
// October 30, 2014
#ifndef _SWAP_H
#define _SWAP_H
#include "Implementation.h"
#if NO_AUTO_ALIGN == YES || LITTLE_ENDIAN_TPM == YES
//
// The aggregation macros for machines that do not allow unaligned access or for little-endian machines.
// Aggregate bytes into an UINT
//
#define BYTE_ARRAY_TO_UINT8(b) (UINT8)((b)[0])
#define BYTE_ARRAY_TO_UINT16(b) (UINT16)( ((b)[0] << 8) \
+ (b)[1])
#define BYTE_ARRAY_TO_UINT32(b) (UINT32)( ((b)[0] << 24) \
+ ((b)[1] << 16) \
+ ((b)[2] << 8 ) \
+ (b)[3])
#define BYTE_ARRAY_TO_UINT64(b) (UINT64)( ((UINT64)(b)[0] << 56) \
+ ((UINT64)(b)[1] << 48) \
+ ((UINT64)(b)[2] << 40) \
+ ((UINT64)(b)[3] << 32) \
+ ((UINT64)(b)[4] << 24) \
+ ((UINT64)(b)[5] << 16) \
+ ((UINT64)(b)[6] << 8) \
+ (UINT64)(b)[7])
//
// Disaggregate a UINT into a byte array
//
#define UINT8_TO_BYTE_ARRAY(i, b) {(b)[0] = (BYTE)(i);}
#define UINT16_TO_BYTE_ARRAY(i, b) {(b)[0] = (BYTE)((i) >> 8); \
(b)[1] = (BYTE) (i);}
#define UINT32_TO_BYTE_ARRAY(i, b) {(b)[0] = (BYTE)((i) >> 24); \
(b)[1] = (BYTE)((i) >> 16); \
(b)[2] = (BYTE)((i) >> 8); \
(b)[3] = (BYTE) (i);}
#define UINT64_TO_BYTE_ARRAY(i, b) {(b)[0] = (BYTE)((i) >> 56); \
(b)[1] = (BYTE)((i) >> 48); \
(b)[2] = (BYTE)((i) >> 40); \
(b)[3] = (BYTE)((i) >> 32); \
(b)[4] = (BYTE)((i) >> 24); \
(b)[5] = (BYTE)((i) >> 16); \
(b)[6] = (BYTE)((i) >> 8); \
(b)[7] = (BYTE) (i);}
#else
//
// the big-endian macros for machines that allow unaligned memory access Aggregate a byte array into a
// UINT
//
#define BYTE_ARRAY_TO_UINT8(b) *((UINT8 *)(b))
#define BYTE_ARRAY_TO_UINT16(b) *((UINT16 *)(b))
#define BYTE_ARRAY_TO_UINT32(b) *((UINT32 *)(b))
#define BYTE_ARRAY_TO_UINT64(b) *((UINT64 *)(b))
//
// Disaggregate a UINT into a byte array
#define UINT8_TO_BYTE_ARRAY(i, b) (*((UINT8 *)(b)) = (i))
#define UINT16_TO_BYTE_ARRAY(i, b) (*((UINT16 *)(b)) = (i))
#define UINT32_TO_BYTE_ARRAY(i, b) (*((UINT32 *)(b)) = (i))
#define UINT64_TO_BYTE_ARRAY(i, b) (*((UINT64 *)(b)) = (i))
#endif // NO_AUTO_ALIGN == YES
#endif // _SWAP_H
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