X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvppinfra%2Fbyte_order.h;h=9beb44706348e1cb03c62a7f6cbf6931c18f9f1f;hb=baa18701b9d54d8924771c25b96bd5d99472b7ad;hp=b263538c6fe4791d39c2b8c6076b338c27410f12;hpb=7cd468a3d7dee7d6c92f69a0bb7061ae208ec727;p=vpp.git

diff --git a/src/vppinfra/byte_order.h b/src/vppinfra/byte_order.h
index b263538c6fe..9beb4470634 100644
--- a/src/vppinfra/byte_order.h
+++ b/src/vppinfra/byte_order.h
@@ -56,7 +56,7 @@
 always_inline u16
 clib_byte_swap_u16 (u16 x)
 {
-  return (x >> 8) | (x << 8);
+  return __builtin_bswap16 (x);
 }
 
 always_inline i16
@@ -68,14 +68,7 @@ clib_byte_swap_i16 (i16 x)
 always_inline u32
 clib_byte_swap_u32 (u32 x)
 {
-#if defined (i386) || defined (__x86_64__)
-  if (!__builtin_constant_p (x))
-    {
-      asm volatile ("bswap %0":"=r" (x):"0" (x));
-      return x;
-    }
-#endif
-  return ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | (x >> 24));
+  return __builtin_bswap32 (x);
 }
 
 always_inline i32
@@ -87,19 +80,7 @@ clib_byte_swap_i32 (i32 x)
 always_inline u64
 clib_byte_swap_u64 (u64 x)
 {
-#if defined (__x86_64__)
-  if (!__builtin_constant_p (x))
-    {
-      asm volatile ("bswapq %0":"=r" (x):"0" (x));
-      return x;
-    }
-#endif
-#define _(x,n,i) \
-  ((((x) >> (8*(i))) & 0xff) << (8*((n)-(i)-1)))
-  return (_(x, 8, 0) | _(x, 8, 1)
-	  | _(x, 8, 2) | _(x, 8, 3)
-	  | _(x, 8, 4) | _(x, 8, 5) | _(x, 8, 6) | _(x, 8, 7));
-#undef _
+  return __builtin_bswap64 (x);
 }
 
 always_inline i64
@@ -191,6 +172,14 @@ _(i64);
 
 #undef _
 
+/* Dummy endian swap functions for IEEE floating-point numbers */
+/* *INDENT-OFF* */
+always_inline f64 clib_net_to_host_f64 (f64 x) { return x; }
+always_inline f64 clib_host_to_net_f64 (f64 x) { return x; }
+always_inline f32 clib_net_to_host_f32 (f32 x) { return x; }
+always_inline f32 clib_host_to_net_f32 (f32 x) { return x; }
+/* *INDENT-ON* */
+
 #endif /* included_clib_byte_order_h */
 
 /*