Add SWAP_LE?? and SWAP_BE?? macros, and make things use them. Converts values

to/from little endian or big endian, which is a NOP if that's what the current
platform already is.


git-svn-id: svn://busybox.net/trunk/busybox@15215 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 16 insertions, 5 deletions

diff --git a/include/platform.h b/include/platform.h
index d684c2dda..10c1d7d86 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -48,11 +48,6 @@
 # define __const const
 #endif
 
-#ifndef __THROW
-# define __THROW
-#endif
-
-
 #ifndef ATTRIBUTE_UNUSED
 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 #endif /* ATTRIBUTE_UNUSED */
@@ -118,6 +113,22 @@
 # define BB_LITTLE_ENDIAN 1
 #endif
 
+#if BB_BIG_ENDIAN
+#define SWAP_BE16(x) x
+#define SWAP_BE32(x) x
+#define SWAP_BE64(x) x
+#define SWAP_LE16(x) bswap_16(x)
+#define SWAP_LE32(x) bswap_32(x)
+#define SWAP_LE64(x) bswap_64(x)
+#else
+#define SWAP_BE16(x) bswap_16(x)
+#define SWAP_BE32(x) bswap_32(x)
+#define SWAP_BE64(x) bswap_64(x)
+#define SWAP_LE16(x) x
+#define SWAP_LE32(x) x
+#define SWAP_LE64(x) x
+#endif
+
 /* ---- Networking ------------------------------------------ */
 #ifndef __APPLE__
 # include <arpa/inet.h>