From a66ea408500f063cdd40acf1acb88ecb96282cb7 Mon Sep 17 00:00:00 2001
From: Patrick Lipka <patrick.lipka@codasip.com>
Date: Mon, 18 Aug 2025 17:16:16 +0200
Subject: [PATCH] add signal handler

---
 src/rvprof_timing.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 src/rvprof_timing.c

diff --git a/src/rvprof_timing.c b/src/rvprof_timing.c
new file mode 100644
index 0000000..68c4229
--- /dev/null
+++ b/src/rvprof_timing.c
@@ -0,0 +1,14 @@
+#include <time.h>
+#include <signal.h>
+#include <setjmp.h>
+#include "rvprof_internal.h"
+
+// global flag for cycle counter availability
+static volatile int g_cycle_counter_available = 0;
+static volatile jmp_buf g_cycle_test_jmpbuf;
+
+// signal handler for illegal instructions
+static void sigkill_handler(int sig){
+    g_cycle_counter_available = 0;
+    longjmp(g_cycle_test_jmpbuf, 1);
+}
\ No newline at end of file