Merged bits.h and bytes.h

1 files changed, 53 insertions, 0 deletions

diff --git a/include/apos/bits.h b/include/apos/bits.h
index 79523db..1e1106a 100644
--- a/include/apos/bits.h
+++ b/include/apos/bits.h
@@ -1,6 +1,9 @@
 #ifndef APOS_BITS_H
 #define APOS_BITS_H
 
+#include <apos/types.h>
+#include <apos/builtin.h>
+
 #define __is_set(x, y) ((x) & (y))
 #define __set_bit(x, y) ((x) |= (y))
 #define __clear_bit(x, y) ((x) &= ~(y))
@@ -9,4 +12,54 @@
 #define __set_nbit(x, y) (__set_bit((x), 1 << (y)))
 #define __clear_nbit(x, y) (__clear_bit((x), 1 << (y)))
 
+uint16_t __bswap16(uint16_t u);
+uint32_t __bswap32(uint32_t u);
+uint64_t __bswap64(uint64_t u);
+
+#if __has_builtin(__builtin_bswap16)
+#define __bswap16(x) __builtin_bswap16(x)
+#endif
+
+#if __has_builtin(__builtin_bswap32)
+#define __bswap32(x) __builtin_bswap32(x)
+#endif
+
+#if __has_builtin(__builtin_bswap64)
+#define __bswap64(x) __builtin_bswap64(x)
+#endif
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define be16_to_cpu(x) __bswap16(x)
+#define be32_to_cpu(x) __bswap32(x)
+#define be64_to_cpu(x) __bswap64(x)
+
+#define cpu_to_be16(x) __bswap16(x)
+#define cpu_to_be32(x) __bswap32(x)
+#define cpu_to_be64(x) __bswap64(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)
+#else
+#define be16_to_cpu(x) (x)
+#define be32_to_cpu(x) (x)
+#define be64_to_cpu(x) (x)
+
+#define cpu_to_be16(x) (x)
+#define cpu_to_be32(x) (x)
+#define cpu_to_be64(x) (x)
+
+#define le16_to_cpu(x) __bswap16(x)
+#define le32_to_cpu(x) __bswap32(x)
+#define le64_to_cpu(x) __bswap64(x)
+
+#define cpu_to_le16(x) __bswap16(x)
+#define cpu_to_le32(x) __bswap32(x)
+#define cpu_to_le64(x) __bswap64(x)
+#endif
+
 #endif /* APOS_BITS_H */