From a88ef2fde041e5d733b5cbe2728b15ca149d1671 Mon Sep 17 00:00:00 2001
From: mrb0nk500 <b0nk@b0nk.xyz>
Date: Sat, 28 Jan 2023 09:31:59 -0400
Subject: Initial commit

---
 src/Runtime/NMWException.h            | 16 ++++++++++++++++
 src/Runtime/abort_exit.c              | 17 +++++++++++++++++
 src/Runtime/global_destructor_chain.c | 22 ++++++++++++++++++++++
 3 files changed, 55 insertions(+)
 create mode 100644 src/Runtime/NMWException.h
 create mode 100644 src/Runtime/abort_exit.c
 create mode 100644 src/Runtime/global_destructor_chain.c

(limited to 'src/Runtime')

diff --git a/src/Runtime/NMWException.h b/src/Runtime/NMWException.h
new file mode 100644
index 0000000..49b623e
--- /dev/null
+++ b/src/Runtime/NMWException.h
@@ -0,0 +1,16 @@
+#ifndef NMWEXCEPTION_H
+#define NMWEXCEPTION_H
+
+typedef void (dtor_func)(void *object, int free_object);
+typedef struct destructor_chain dtor_chain;
+
+struct destructor_chain {
+	dtor_chain *next;
+	dtor_func *destructor;
+	void *object;
+};
+
+void *__register_global_object(void *object, dtor_func *destructor, dtor_chain *regmem);
+void __destroy_global_chain();
+
+#endif
diff --git a/src/Runtime/abort_exit.c b/src/Runtime/abort_exit.c
new file mode 100644
index 0000000..43b1a0c
--- /dev/null
+++ b/src/Runtime/abort_exit.c
@@ -0,0 +1,17 @@
+void __destroy_global_chain();
+
+extern void (*_dtors[])(void);
+
+int __aborting;
+
+
+void exit(int state) {
+	void (**dtor)(void);
+	if (!__aborting) {
+		dtor = _dtors;
+		while (*dtor != 0) {
+			(*dtor)();
+			dtor++;
+		}
+	}
+}
diff --git a/src/Runtime/global_destructor_chain.c b/src/Runtime/global_destructor_chain.c
new file mode 100644
index 0000000..b96c8f3
--- /dev/null
+++ b/src/Runtime/global_destructor_chain.c
@@ -0,0 +1,22 @@
+#include "NMWException.h"
+
+dtor_chain *__global_destructor_chain;
+
+extern void *__register_global_object(void *object, dtor_func *destructor, dtor_chain *regmem) {
+	regmem->next = __global_destructor_chain;
+	regmem->destructor = destructor;
+	regmem->object = object;
+	__global_destructor_chain = regmem;
+	return object;
+}
+
+extern void __destroy_global_chain() {
+	dtor_chain *iter = __global_destructor_chain;
+	while (__global_destructor_chain != 0) {
+		iter = __global_destructor_chain;
+		__global_destructor_chain = __global_destructor_chain->next;
+		iter->destructor(iter->object, -1);
+	}
+}
+
+__declspec(section ".dtors") static void* const __destroy_global_chain_reference = __destroy_global_chain;
-- 
cgit v1.2.3-13-gbd6f