1 files changed, 5 insertions, 4 deletions
diff --git a/src/sys/include/sys/syscall.h b/src/sys/include/sys/syscall.h
index 3f8ab10..5ec48c3 100644
--- a/src/sys/include/sys/syscall.h
+++ b/src/sys/include/sys/syscall.h
@@ -42,10 +42,11 @@
  * Defines marked as (mandatory) must be implemented
  * between latches.
  */
-#define SYS_none    0x00
-#define SYS_exit    0x01
-#define SYS_write   0x02
-#define SYS_cross   0x03    /* cross a border (mandatory) */
+#define SYS_none        0x00
+#define SYS_exit        0x01
+#define SYS_write       0x02
+#define SYS_cross       0x03    /* cross a border (mandatory) */
+#define SYS_sigaction   0x04
 
 typedef __ssize_t scret_t;
 typedef __ssize_t scarg_t;