1 files changed, 23 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/lib/atexit.c b/mdk-stage1/dietlibc/lib/atexit.c
new file mode 100644
index 000000000..2b644bf49
--- /dev/null
+++ b/mdk-stage1/dietlibc/lib/atexit.c
@@ -0,0 +1,23 @@
+typedef void (*function)(void);
+
+static function __atexitlist[4];
+
+int atexit(function t) {
+  int i;
+  for (i=0; i<4; i++)
+    if (__atexitlist[i]==0) {
+      __atexitlist[i]=t;
+      return 0;
+    }
+  return -1;
+}
+
+extern void _exit(int code) __attribute__((noreturn));
+
+void exit(int code) {
+  if (__atexitlist[0]) __atexitlist[0]();
+  if (__atexitlist[1]) __atexitlist[1]();
+  if (__atexitlist[2]) __atexitlist[2]();
+  if (__atexitlist[3]) __atexitlist[3]();
+  _exit(code);
+}