3 files changed, 24 insertions, 1 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 37732e14e..03f9c35f3 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -192,6 +192,28 @@ int klogctl(int type, char *b, int len);
 # define BUFSIZ 4096
 #endif
 
+#if __GNUC_PREREQ(5,0)
+/* Since musl is apparently unable to get it right and would use
+ * a function call to a single-instruction function of "bswap %eax",
+ * reroute to gcc builtins:
+ */
+# undef  bswap_16
+# undef  bswap_32
+# undef  bswap_64
+# define bswap_16(x) __builtin_bswap16(x)
+# define bswap_32(x) __builtin_bswap32(x)
+# define bswap_64(x) __builtin_bswap64(x)
+# if BB_LITTLE_ENDIAN
+#   undef ntohs
+#   undef htons
+#   undef ntohl
+#   undef htonl
+#   define ntohs(x) __builtin_bswap16(x)
+#   define htons(x) __builtin_bswap16(x)
+#   define ntohl(x) __builtin_bswap32(x)
+#   define htonl(x) __builtin_bswap32(x)
+# endif
+#endif
 
 /* Busybox does not use threads, we can speed up stdio. */
 #ifdef HAVE_UNLOCKED_STDIO
diff --git a/include/platform.h b/include/platform.h
index 387b6f537..4633b2507 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -195,6 +195,7 @@
 #endif
 
 #if ULONG_MAX > 0xffffffff
+/* inline 64-bit bswap only on 64-bit arches */
 # define bb_bswap_64(x) bswap_64(x)
 #endif
 
diff --git a/networking/ntpd.c b/networking/ntpd.c
index 8cf8830c2..6bf6c4e07 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -577,7 +577,7 @@ sfp_to_d(s_fixedpt_t sfp)
         return ret;
 }
 #if ENABLE_FEATURE_NTPD_SERVER
-static void
+static NOINLINE void
 d_to_lfp(l_fixedpt_t *lfp, double d)
 {
         uint32_t intl;