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7228ce007c
These inline functions and macros are only used in platform/endian_(big|little).c and do not need to be compiled into every object which includes `platform.h`. Change-Id: Ib2326e6a4eb5e000a0eace857d040372e2e9e561 Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com> Reviewed-on: https://review.coreboot.org/c/flashrom/+/63825 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2009 Carl-Daniel Hailfinger
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* Copyright (C) 2022 secunet Security Networks AG
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* (written by Thomas Heijligen <thomas.heijligen@secunet.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* inline functions and macros shared by endian conversion functions
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*/
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#ifndef ___SWAP_H___
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#define ___SWAP_H___ 1
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#include <stdint.h>
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/* swap bytes */
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/* OpenBSD has conflicting definitions for swapX, _swap_X and __swapX */
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static inline uint8_t ___swap8(const uint8_t value)
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{
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return (value & (uint8_t)0xffU);
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}
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static inline uint16_t ___swap16(const uint16_t value)
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{
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return ((value & (uint16_t)0x00ffU) << 8) |
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((value & (uint16_t)0xff00U) >> 8);
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}
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static inline uint32_t ___swap32(const uint32_t value)
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{
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return ((value & (uint32_t)0x000000ffUL) << 24) |
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((value & (uint32_t)0x0000ff00UL) << 8) |
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((value & (uint32_t)0x00ff0000UL) >> 8) |
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((value & (uint32_t)0xff000000UL) >> 24);
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}
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static inline uint64_t ___swap64(const uint64_t value)
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{
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return ((value & (uint64_t)0x00000000000000ffULL) << 56) |
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((value & (uint64_t)0x000000000000ff00ULL) << 40) |
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((value & (uint64_t)0x0000000000ff0000ULL) << 24) |
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((value & (uint64_t)0x00000000ff000000ULL) << 8) |
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((value & (uint64_t)0x000000ff00000000ULL) >> 8) |
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((value & (uint64_t)0x0000ff0000000000ULL) >> 24) |
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((value & (uint64_t)0x00ff000000000000ULL) >> 40) |
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((value & (uint64_t)0xff00000000000000ULL) >> 56);
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}
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/*
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* macro to return the same value as passed.
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*
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* `___return_same(cpu_to_le, 8)`
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* expands to
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* `uint8_t cpu_to_le8 (const uint8_t value) { return value; }`
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*/
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#define ___return_same(name, bits) \
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uint##bits##_t name##bits (const uint##bits##_t value) { return value; }
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/*
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* macro to return the swapped value as passed.
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*
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* `___return_swapped(cpu_to_be, 8)`
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* expands to
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* `uint8_t cpu_to_be8 (const uint8_t value) { return ___swap8 (value); }`
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*/
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#define ___return_swapped(name, bits) \
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uint##bits##_t name##bits (const uint##bits##_t value) { return ___swap##bits (value); }
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#endif /* !___SWAP_H___ */
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