Use macro bswap

tests/unit/unicorn_test.h

@@ -6,7 +6,24 @@
 #include <unicorn/unicorn.h>
 #include "acutest.h"
 #include "endian.h"
-#include "bswap.h"
+
+// Copied from glibc-2.29
+
+/* Swap bytes in 32 bit value.  */
+#define bswap_32(x) \
+     ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >>  8) |	      \
+      (((x) & 0x0000ff00u) <<  8) | (((x) & 0x000000ffu) << 24))
+
+/* Swap bytes in 64 bit value.  */
+#define bswap_64(x) \
+      ((((x) & 0xff00000000000000ull) >> 56)				      \
+      | (((x) & 0x00ff000000000000ull) >> 40)				      \
+      | (((x) & 0x0000ff0000000000ull) >> 24)				      \
+      | (((x) & 0x000000ff00000000ull) >> 8)				      \
+      | (((x) & 0x00000000ff000000ull) << 8)				      \
+      | (((x) & 0x0000000000ff0000ull) << 24)				      \
+      | (((x) & 0x000000000000ff00ull) << 40)				      \
+      | (((x) & 0x00000000000000ffull) << 56))
 
 /**
  * Assert that err matches expect