no //
diff --git a/src/libthread/power-ucontext.h b/src/libthread/power-ucontext.h
index 9e50082..27ed339 100644
--- a/src/libthread/power-ucontext.h
+++ b/src/libthread/power-ucontext.h
@@ -12,10 +12,12 @@
ulong toc; /* callee saved: r2 */
ulong r3; /* first arg to function, return register: r3 */
ulong gpr[19]; /* callee saved: r13-r31 */
+/*
// XXX: currently do not save vector registers or floating-point state
// ulong pad;
-// uvlong fpr[18]; /* callee saved: f14-f31 */
-// ulong vr[4*12]; /* callee saved: v20-v31, 256-bits each */
+// uvlong fpr[18]; / * callee saved: f14-f31 * /
+// ulong vr[4*12]; / * callee saved: v20-v31, 256-bits each * /
+*/
};
struct ucontext
