2017-05-15 23:29:17 +03:00
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// Copyright (c) Microsoft. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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#ifndef _SWAP_H
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#define _SWAP_H
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#if LITTLE_ENDIAN_TPM == YES
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#define TO_BIG_ENDIAN_UINT16(i) REVERSE_ENDIAN_16(i)
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#define FROM_BIG_ENDIAN_UINT16(i) REVERSE_ENDIAN_16(i)
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#define TO_BIG_ENDIAN_UINT32(i) REVERSE_ENDIAN_32(i)
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#define FROM_BIG_ENDIAN_UINT32(i) REVERSE_ENDIAN_32(i)
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#define TO_BIG_ENDIAN_UINT64(i) REVERSE_ENDIAN_64(i)
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#define FROM_BIG_ENDIAN_UINT64(i) REVERSE_ENDIAN_64(i)
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#else
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#define TO_BIG_ENDIAN_UINT16(i) (i)
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#define FROM_BIG_ENDIAN_UINT16(i) (i)
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#define TO_BIG_ENDIAN_UINT32(i) (i)
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#define FROM_BIG_ENDIAN_UINT32(i) (i)
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#define TO_BIG_ENDIAN_UINT64(i) (i)
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#define FROM_BIG_ENDIAN_UINT64(i) (i)
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#endif
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2018-09-07 20:18:23 +03:00
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#if AUTO_ALIGN == NO
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2017-05-15 23:29:17 +03:00
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// The aggregation macros for machines that do not allow unaligned access or for
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// little-endian machines.
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// Aggregate bytes into an UINT
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#define BYTE_ARRAY_TO_UINT8(b) (uint8_t)((b)[0])
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#define BYTE_ARRAY_TO_UINT16(b) ByteArrayToUint16((BYTE *)(b))
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#define BYTE_ARRAY_TO_UINT32(b) ByteArrayToUint32((BYTE *)(b))
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#define BYTE_ARRAY_TO_UINT64(b) ByteArrayToUint64((BYTE *)(b))
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#define UINT8_TO_BYTE_ARRAY(i, b) ((b)[0] = (uint8_t)(i))
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#define UINT16_TO_BYTE_ARRAY(i, b) Uint16ToByteArray((i), (BYTE *)(b))
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#define UINT32_TO_BYTE_ARRAY(i, b) Uint32ToByteArray((i), (BYTE *)(b))
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#define UINT64_TO_BYTE_ARRAY(i, b) Uint64ToByteArray((i), (BYTE *)(b))
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#else // AUTO_ALIGN
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#if BIG_ENDIAN_TPM
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// the big-endian macros for machines that allow unaligned memory access
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// Aggregate a byte array into a UINT
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#define BYTE_ARRAY_TO_UINT8(b) *((uint8_t *)(b))
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#define BYTE_ARRAY_TO_UINT16(b) *((uint16_t *)(b))
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#define BYTE_ARRAY_TO_UINT32(b) *((uint32_t *)(b))
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#define BYTE_ARRAY_TO_UINT64(b) *((uint64_t *)(b))
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// Disaggregate a UINT into a byte array
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#define UINT8_TO_BYTE_ARRAY(i, b) {*((uint8_t *)(b)) = (i);}
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#define UINT16_TO_BYTE_ARRAY(i, b) {*((uint16_t *)(b)) = (i);}
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#define UINT32_TO_BYTE_ARRAY(i, b) {*((uint32_t *)(b)) = (i);}
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#define UINT64_TO_BYTE_ARRAY(i, b) {*((uint64_t *)(b)) = (i);}
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#else
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// the little endian macros for machines that allow unaligned memory access
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// the big-endian macros for machines that allow unaligned memory access
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// Aggregate a byte array into a UINT
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#define BYTE_ARRAY_TO_UINT8(b) *((uint8_t *)(b))
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#define BYTE_ARRAY_TO_UINT16(b) REVERSE_ENDIAN_16(*((uint16_t *)(b)))
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#define BYTE_ARRAY_TO_UINT32(b) REVERSE_ENDIAN_32(*((uint32_t *)(b)))
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#define BYTE_ARRAY_TO_UINT64(b) REVERSE_ENDIAN_64(*((uint64_t *)(b)))
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// Disaggregate a UINT into a byte array
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#define UINT8_TO_BYTE_ARRAY(i, b) {*((uint8_t *)(b)) = (i);}
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#define UINT16_TO_BYTE_ARRAY(i, b) {*((uint16_t *)(b)) = REVERSE_ENDIAN_16(i);}
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#define UINT32_TO_BYTE_ARRAY(i, b) {*((uint32_t *)(b)) = REVERSE_ENDIAN_32(i);}
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#define UINT64_TO_BYTE_ARRAY(i, b) {*((uint64_t *)(b)) = REVERSE_ENDIAN_64(i);}
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#endif // BIG_ENDIAN_TPM
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#endif // AUTO_ALIGN == NO
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#endif // _SWAP_H
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