diff -up jack-1.9.8/linux/cycles.h\~ jack-1.9.8/linux/cycles.h
--- jack-1.9.8/linux/cycles.h~	2011-12-19 12:54:27.000000000 +0100
+++ jack-1.9.8/linux/cycles.h	2012-03-02 23:57:29.200812059 +0100
@@ -77,16 +77,24 @@ static inline cycles_t get_cycles(void)
 {
     cycles_t ret = 0;
 
+#ifdef __powerpc64__
+# define LONGT ".llong"
+#else
+# define LONGT ".long"
+#endif
+
     __asm__ __volatile__(
         "98:	mftb %0\n"
         "99:\n"
         ".section __ftr_fixup,\"a\"\n"
         "	.long %1\n"
         "	.long 0\n"
-        "	.long 98b\n"
-        "	.long 99b\n"
+        "	" LONGT " 98b\n"
+        "	" LONGT " 99b\n"
         ".previous"
     : "=r" (ret) : "i" (CPU_FTR_601));
+
+#undef LONGT
     return ret;
 }
 

Diff finished.  Fri Mar  2 23:57:31 2012