Index: include/elf/common.h
--- include/elf/common.h.orig
+++ include/elf/common.h
@@ -775,6 +775,7 @@
 #define NT_OPENBSD_FPREGS	21
 #define NT_OPENBSD_XFPREGS	22
 #define NT_OPENBSD_WCOOKIE	23
+#define NT_OPENBSD_PACMASK	24
 
 /* Note segments for core files on QNX systems.  Note name
    must start with "QNX".  */
