Index: libc/arch/mips32/src/syscall.c
===================================================================
--- libc/arch/mips32/src/syscall.c	(revision 29c1282a8aa7034c86df62693416c46d362c9408)
+++ libc/arch/mips32/src/syscall.c	(revision 255ec3511fb7aaafb1f007ea8746bb2ef093ebe1)
@@ -47,4 +47,6 @@
 		  "r" (__mips_reg_a3),
 		  "r" (__mips_reg_v0)
+		: "%ra" /* We are a function call, although C does not 
+			 * know it */
 	);