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/* SPDX-License-Identifier: Intel */
/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*/
#ifndef __SIGNATURES_H__
#define __SIGNATURES_H__
/**
* Returns a 16-bit signature built from 2 ASCII characters.
*
* This macro returns a 16-bit value built from the two ASCII characters
* specified by A and B.
*
* @A: The first ASCII character.
* @B: The second ASCII character.
*
* @return: A 16-bit value built from the two ASCII characters specified by
* A and B.
*/
#define SIGNATURE_16(A, B) ((A) | (B << 8))
/**
* Returns a 32-bit signature built from 4 ASCII characters.
*
* This macro returns a 32-bit value built from the four ASCII characters
* specified by A, B, C, and D.
*
* @A: The first ASCII character.
* @B: The second ASCII character.
* @C: The third ASCII character.
* @D: The fourth ASCII character.
*
* @return: A 32-bit value built from the two ASCII characters specified by
* A, B, C and D.
*/
#define SIGNATURE_32(A, B, C, D) \
(SIGNATURE_16(A, B) | (SIGNATURE_16(C, D) << 16))
/**
* Returns a 64-bit signature built from 8 ASCII characters.
*
* This macro returns a 64-bit value built from the eight ASCII characters
* specified by A, B, C, D, E, F, G,and H.
*
* @A: The first ASCII character.
* @B: The second ASCII character.
* @C: The third ASCII character.
* @D: The fourth ASCII character.
* @E: The fifth ASCII character.
* @F: The sixth ASCII character.
* @G: The seventh ASCII character.
* @H: The eighth ASCII character.
*
* @return: A 64-bit value built from the two ASCII characters specified by
* A, B, C, D, E, F, G and H.
*/
#define SIGNATURE_64(A, B, C, D, E, F, G, H) \
(SIGNATURE_32(A, B, C, D) | ((u64)(SIGNATURE_32(E, F, G, H)) << 32))
#endif /* __SIGNATURES_H__ */
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