[git commit] volume_id_internal.h: drop unoptimized byteswap routines

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=aa94130f744ae229e5392eb4e303a9805a9963fb
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

function                                             old     new   delta
volume_id_probe_hfs_hfsplus                          802     627    -175

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 util-linux/volume_id/volume_id_internal.h |   52 +++++++++--------------------
 1 files changed, 16 insertions(+), 36 deletions(-)

diff --git a/util-linux/volume_id/volume_id_internal.h b/util-linux/volume_id/volume_id_internal.h
index 3f02bd5..d3c6a61 100644
--- a/util-linux/volume_id/volume_id_internal.h
+++ b/util-linux/volume_id/volume_id_internal.h
@@ -96,44 +96,24 @@ void FAST_FUNC free_volume_id(struct volume_id *id);
 /* size of seek buffer, FAT cluster is 32k max */
 #define SEEK_BUFFER_SIZE			0x10000
 
-#define bswap16(x) (uint16_t)	( \
-				(((uint16_t)(x) & 0x00ffu) << 8) | \
-				(((uint16_t)(x) & 0xff00u) >> 8))
-
-#define bswap32(x) (uint32_t)	( \
-				(((uint32_t)(x) & 0xff000000u) >> 24) | \
-				(((uint32_t)(x) & 0x00ff0000u) >>  8) | \
-				(((uint32_t)(x) & 0x0000ff00u) <<  8) | \
-				(((uint32_t)(x) & 0x000000ffu) << 24))
-
-#define bswap64(x) (uint64_t)	( \
-				(((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \
-				(((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \
-				(((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \
-				(((uint64_t)(x) & 0x000000ff00000000ull) >>  8) | \
-				(((uint64_t)(x) & 0x00000000ff000000ull) <<  8) | \
-				(((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \
-				(((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \
-				(((uint64_t)(x) & 0x00000000000000ffull) << 56))
-
 #if BB_LITTLE_ENDIAN
-#define le16_to_cpu(x) (x)
-#define le32_to_cpu(x) (x)
-#define le64_to_cpu(x) (x)
-#define be16_to_cpu(x) bswap16(x)
-#define be32_to_cpu(x) bswap32(x)
-#define cpu_to_le16(x) (x)
-#define cpu_to_le32(x) (x)
-#define cpu_to_be32(x) bswap32(x)
+# define le16_to_cpu(x) (uint16_t)(x)
+# define le32_to_cpu(x) (uint32_t)(x)
+# define le64_to_cpu(x) (uint64_t)(x)
+# define be16_to_cpu(x) (uint16_t)(bswap_16(x))
+# define be32_to_cpu(x) (uint32_t)(bswap_32(x))
+# define cpu_to_le16(x) (uint16_t)(x)
+# define cpu_to_le32(x) (uint32_t)(x)
+# define cpu_to_be32(x) (uint32_t)(bswap_32(x))
 #else
-#define le16_to_cpu(x) bswap16(x)
-#define le32_to_cpu(x) bswap32(x)
-#define le64_to_cpu(x) bswap64(x)
-#define be16_to_cpu(x) (x)
-#define be32_to_cpu(x) (x)
-#define cpu_to_le16(x) bswap16(x)
-#define cpu_to_le32(x) bswap32(x)
-#define cpu_to_be32(x) (x)
+# define le16_to_cpu(x) (uint16_t)(bswap_16(x))
+# define le32_to_cpu(x) (uint32_t)(bswap_32(x))
+# define le64_to_cpu(x) (uint64_t)(bb_bswap_64(x))
+# define be16_to_cpu(x) (uint16_t)(x)
+# define be32_to_cpu(x) (uint32_t)(x)
+# define cpu_to_le16(x) (uint16_t)(bswap_16(x))
+# define cpu_to_le32(x) (uint32_t)(bswap_32(x))
+# define cpu_to_be32(x) (uint32_t)(x)
 #endif
 
 /* volume_id_set_uuid(id,buf,fmt) assumes size of uuid buf