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author | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
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committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/SLOF/include/byteorder.h | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/SLOF/include/byteorder.h')
-rw-r--r-- | roms/SLOF/include/byteorder.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/roms/SLOF/include/byteorder.h b/roms/SLOF/include/byteorder.h new file mode 100644 index 000000000..d4a2c8ca7 --- /dev/null +++ b/roms/SLOF/include/byteorder.h @@ -0,0 +1,96 @@ +/****************************************************************************** + * Copyright (c) 2011 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +/* + * Common byteorder (endianness) macros + */ + +#ifndef BYTEORDER_H +#define BYTEORDER_H + +#include <stdint.h> + +typedef uint16_t le16; +typedef uint32_t le32; +typedef uint64_t le64; + +static inline uint16_t bswap_16 (uint16_t x) +{ + return __builtin_bswap16(x); +} + +static inline uint32_t bswap_32 (uint32_t x) +{ + return __builtin_bswap32(x); +} + +static inline uint64_t bswap_64 (uint64_t x) +{ + return __builtin_bswap64(x); +} + +static inline void bswap_16p (uint16_t *x) +{ + *x = __builtin_bswap16(*x); +} + +static inline void bswap_32p (uint32_t *x) +{ + *x = __builtin_bswap32(*x); +} + +static inline void bswap_64p (uint64_t *x) +{ + *x = __builtin_bswap64(*x); +} + + +/* gcc defines __BIG_ENDIAN__ on big endian targets */ +#ifdef __BIG_ENDIAN__ + +#define cpu_to_be16(x) (x) +#define cpu_to_be32(x) (x) +#define cpu_to_be64(x) (x) + +#define be16_to_cpu(x) (x) +#define be32_to_cpu(x) (x) +#define be64_to_cpu(x) (x) + +#define le16_to_cpu(x) bswap_16(x) +#define le32_to_cpu(x) bswap_32(x) +#define le64_to_cpu(x) bswap_64(x) + +#define cpu_to_le16(x) bswap_16(x) +#define cpu_to_le32(x) bswap_32(x) +#define cpu_to_le64(x) bswap_64(x) + +#else + +#define cpu_to_be16(x) bswap_16(x) +#define cpu_to_be32(x) bswap_32(x) +#define cpu_to_be64(x) bswap_64(x) + +#define be16_to_cpu(x) bswap_16(x) +#define be32_to_cpu(x) bswap_32(x) +#define be64_to_cpu(x) bswap_64(x) + +#define le16_to_cpu(x) (x) +#define le32_to_cpu(x) (x) +#define le64_to_cpu(x) (x) + +#define cpu_to_le16(x) (x) +#define cpu_to_le32(x) (x) +#define cpu_to_le64(x) (x) + +#endif /* __BIG_ENDIAN__ */ + +#endif /* BYTEORDER_H */ |