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Add macros for 64bit byte order swapping 

Change-Id: Ic31ccd41ba3e0af7046eafc29221810d4cd196c8
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/275
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Stefan Reinauer 2011-10-14 15:11:16 -07:00 committed by Patrick Georgi
parent b538110532
commit 9ea33e9318
2 changed files with 24 additions and 6 deletions
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15
src/arch/x86/include/arch/byteorder.h
View File

@ -3,17 +3,24 @@
#define __LITTLE_ENDIAN 1234
#include <stdint.h>
#include <swab.h>
#define cpu_to_le32(x) ((unsigned int)(x))
#define le32_to_cpu(x) ((unsigned int)(x))
#define cpu_to_le16(x) ((unsigned short)(x))
#define le16_to_cpu(x) ((unsigned short)(x))
#define cpu_to_le64(x) ((uint64_t)(x))
#define le64_to_cpu(x) ((uint64_t)(x))
#define cpu_to_le32(x) ((uint32_t)(x))
#define le32_to_cpu(x) ((uint32_t)(x))
#define cpu_to_le16(x) ((uint16_t)(x))
#define le16_to_cpu(x) ((uint16_t)(x))
#define cpu_to_be64(x) swab64(x)
#define be64_to_cpu(x) swab64(x)
#define cpu_to_be32(x) swab32((x))
#define be32_to_cpu(x) swab32((x))
#define cpu_to_be16(x) swab16((x))
#define be16_to_cpu(x) swab16((x))
#define ntohll(x) be64_to_cpu(x)
#define htonll(x) cpu_to_be64(x)
#define ntohl(x) be32_to_cpu(x)
#define htonl(x) cpu_to_be32(x)

11
src/include/swab.h
View File

@ -30,4 +30,15 @@
(((unsigned int)(x) & (unsigned int)0x00ff0000UL) >> 8) | \
(((unsigned int)(x) & (unsigned int)0xff000000UL) >> 24) ))
#define swab64(x) \
((uint64_t)( \
(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \
(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56) ))
#endif /* _SWAB_H */