diff options
Diffstat (limited to 'qemu/roms/SLOF/include/byteorder.h')
-rw-r--r-- | qemu/roms/SLOF/include/byteorder.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/include/byteorder.h b/qemu/roms/SLOF/include/byteorder.h new file mode 100644 index 000000000..60ca67267 --- /dev/null +++ b/qemu/roms/SLOF/include/byteorder.h @@ -0,0 +1,98 @@ +/****************************************************************************** + * 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> + +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 */ |