lib, vm: reimplement exit() as exception type

Instead of invoking exit(3) from uc_exit(), use a new EXCEPTION_EXIT
exception type to instruct the VM to shutdown cleanly.

This is required to not terminate the host program in case libucode
is embedded and loaded scripts invoke the exit() function.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/types.h b/types.h
index 710f6fc..b4c33fc 100644
--- a/types.h
+++ b/types.h
@@ -217,7 +217,8 @@ typedef enum {
 	EXCEPTION_RUNTIME,
 	EXCEPTION_TYPE,
 	EXCEPTION_REFERENCE,
-	EXCEPTION_USER
+	EXCEPTION_USER,
+	EXCEPTION_EXIT
 } uc_exception_type_t;
 
 typedef struct {