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/********************************************************************************/
/* */
/* Swap */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: swap.h 1490 2019-07-26 21:13:22Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
/* 1. Copyright Licenses: */
/* */
/* - Trusted Computing Group (TCG) grants to the user of the source code in */
/* this specification (the "Source Code") a worldwide, irrevocable, */
/* nonexclusive, royalty free, copyright license to reproduce, create */
/* derivative works, distribute, display and perform the Source Code and */
/* derivative works thereof, and to grant others the rights granted herein. */
/* */
/* - The TCG grants to the user of the other parts of the specification */
/* (other than the Source Code) the rights to reproduce, distribute, */
/* display, and perform the specification solely for the purpose of */
/* developing products based on such documents. */
/* */
/* 2. Source Code Distribution Conditions: */
/* */
/* - Redistributions of Source Code must retain the above copyright licenses, */
/* this list of conditions and the following disclaimers. */
/* */
/* - Redistributions in binary form must reproduce the above copyright */
/* licenses, this list of conditions and the following disclaimers in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* 3. Disclaimers: */
/* */
/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
/* information on specification licensing rights available through TCG */
/* membership agreements. */
/* */
/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
/* */
/* - Without limitation, TCG and its members and licensors disclaim all */
/* liability, including liability for infringement of any proprietary */
/* rights, relating to use of information in this specification and to the */
/* implementation of this specification, and TCG disclaims all liability for */
/* cost of procurement of substitute goods or services, lost profits, loss */
/* of use, loss of data or any incidental, consequential, direct, indirect, */
/* or special damages, whether under contract, tort, warranty or otherwise, */
/* arising in any way out of use or reliance upon this specification or any */
/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2016 - 2018 */
/* */
/********************************************************************************/
#ifndef SWAP_H
#define SWAP_H
#if LITTLE_ENDIAN_TPM
#define TO_BIG_ENDIAN_UINT16(i) REVERSE_ENDIAN_16(i)
#define FROM_BIG_ENDIAN_UINT16(i) REVERSE_ENDIAN_16(i)
#define TO_BIG_ENDIAN_UINT32(i) REVERSE_ENDIAN_32(i)
#define FROM_BIG_ENDIAN_UINT32(i) REVERSE_ENDIAN_32(i)
#define TO_BIG_ENDIAN_UINT64(i) REVERSE_ENDIAN_64(i)
#define FROM_BIG_ENDIAN_UINT64(i) REVERSE_ENDIAN_64(i)
#else
#define TO_BIG_ENDIAN_UINT16(i) (i)
#define FROM_BIG_ENDIAN_UINT16(i) (i)
#define TO_BIG_ENDIAN_UINT32(i) (i)
#define FROM_BIG_ENDIAN_UINT32(i) (i)
#define TO_BIG_ENDIAN_UINT64(i) (i)
#define FROM_BIG_ENDIAN_UINT64(i) (i)
#endif
#if AUTO_ALIGN == NO
/* 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_t)((b)[0])
#define BYTE_ARRAY_TO_UINT16(b) ByteArrayToUint16((BYTE *)(b))
#define BYTE_ARRAY_TO_UINT32(b) ByteArrayToUint32((BYTE *)(b))
#define BYTE_ARRAY_TO_UINT64(b) ByteArrayToUint64((BYTE *)(b))
#define UINT8_TO_BYTE_ARRAY(i, b) ((b)[0] = (uint8_t)(i))
#define UINT16_TO_BYTE_ARRAY(i, b) Uint16ToByteArray((i), (BYTE *)(b))
#define UINT32_TO_BYTE_ARRAY(i, b) Uint32ToByteArray((i), (BYTE *)(b))
#define UINT64_TO_BYTE_ARRAY(i, b) Uint64ToByteArray((i), (BYTE *)(b))
#else // AUTO_ALIGN
#if BIG_ENDIAN_TPM
/* 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_t *)(b))
#define BYTE_ARRAY_TO_UINT16(b) *((uint16_t *)(b))
#define BYTE_ARRAY_TO_UINT32(b) *((uint32_t *)(b))
#define BYTE_ARRAY_TO_UINT64(b) *((uint64_t *)(b))
/* Disaggregate a UINT into a byte array */
#define UINT8_TO_BYTE_ARRAY(i, b) {*((uint8_t *)(b)) = (i);}
#define UINT16_TO_BYTE_ARRAY(i, b) {*((uint16_t *)(b)) = (i);}
#define UINT32_TO_BYTE_ARRAY(i, b) {*((uint32_t *)(b)) = (i);}
#define UINT64_TO_BYTE_ARRAY(i, b) {*((uint64_t *)(b)) = (i);}
#else
/* the little endian macros for machines that allow unaligned memory access 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_t *)(b))
#define BYTE_ARRAY_TO_UINT16(b) REVERSE_ENDIAN_16(*((uint16_t *)(b)))
#define BYTE_ARRAY_TO_UINT32(b) REVERSE_ENDIAN_32(*((uint32_t *)(b)))
#define BYTE_ARRAY_TO_UINT64(b) REVERSE_ENDIAN_64(*((uint64_t *)(b)))
/* Disaggregate a UINT into a byte array */
#define UINT8_TO_BYTE_ARRAY(i, b) {*((uint8_t *)(b)) = (i);}
#define UINT16_TO_BYTE_ARRAY(i, b) {*((uint16_t *)(b)) = REVERSE_ENDIAN_16(i);}
#define UINT32_TO_BYTE_ARRAY(i, b) {*((uint32_t *)(b)) = REVERSE_ENDIAN_32(i);}
#define UINT64_TO_BYTE_ARRAY(i, b) {*((uint64_t *)(b)) = REVERSE_ENDIAN_64(i);}
#endif // BIG_ENDIAN_TPM
#endif // AUTO_ALIGN == NO
#endif
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