Support simple try/throw in LLVM backend

1 files changed, 25 insertions, 0 deletions

diff --git a/runtime/src/exceptions.c b/runtime/src/exceptions.c
new file mode 100644
index 00000000..deaaa25b
--- /dev/null
+++ b/runtime/src/exceptions.c
@@ -0,0 +1,25 @@
+#ifndef __WASM__
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+uint32_t patio__runtime__exceptions_exception_value;
+jmp_buf* patio__runtime__exceptions_exception_handler = 0;
+
+void patio__runtime__exceptions_throw(uint32_t exception_tag, uint64_t value) {
+    if (patio__runtime__exceptions_exception_handler == 0) {
+        exit(1);
+    }
+    patio__runtime__exceptions_exception_value = value;
+    _longjmp(*patio__runtime__exceptions_exception_handler, exception_tag);
+}
+
+void patio__runtime__exceptions_rethrow(uint32_t exception_tag) {
+    if (patio__runtime__exceptions_exception_handler == 0) {
+        exit(1);
+    }
+    _longjmp(*patio__runtime__exceptions_exception_handler, exception_tag);
+}
+
+#endif