cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cfi_endian.h (1514B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
      4 */
      5
      6#include <asm/byteorder.h>
      7
      8#define CFI_HOST_ENDIAN 1
      9#define CFI_LITTLE_ENDIAN 2
     10#define CFI_BIG_ENDIAN 3
     11
     12#if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP)
     13#define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN
     14#elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP)
     15#define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN
     16#elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP)
     17#define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN
     18#else
     19#error No CFI endianness defined
     20#endif
     21
     22#define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN)
     23#define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN)
     24#define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN)
     25#define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN)
     26
     27#define cpu_to_cfi8(map, x) (x)
     28#define cfi8_to_cpu(map, x) (x)
     29#define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x))
     30#define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x))
     31#define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x))
     32#define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x))
     33#define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x))
     34#define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x))
     35
     36#define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x))
     37#define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x))
     38#define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x))
     39#define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x))