add TRAP_UNK si_code to signal.h from linux v4.18

used for undiagnosed trap exceptions where linux previously set si_code
to 0. new in linux commit db78e6a0a6f9f7d7277965600eeb1a5b3a6f55a8

diff --git a/include/signal.h b/include/signal.h
index a4f85cca0370ba0fe8557510961b90960de6f47b..5c48cb838fab75faea60d2433d47be2088d786d9 100644 (file)
--- a/include/signal.h
+++ b/include/signal.h
@@ -233,6 +233,7 @@ void (*sigset(int, void (*)(int)))(int);
 #define TRAP_TRACE 2
 #define TRAP_BRANCH 3
 #define TRAP_HWBKPT 4
+#define TRAP_UNK 5
 #define POLL_IN 1
 #define POLL_OUT 2
 #define POLL_MSG 3