From 6cbad718fbe207c92aef3400690bca35891d38b3 Mon Sep 17 00:00:00 2001
From: Bananymous <bananymousosq@gmail.com>
Date: Thu, 2 Feb 2023 15:50:26 +0200
Subject: [PATCH] Kernel: Add some more cxxabi functionality

We can now declate static variables in functions
---
 kernel/icxxabi.cpp | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/kernel/icxxabi.cpp b/kernel/icxxabi.cpp
index 8cdb147e2..f5883a5b5 100644
--- a/kernel/icxxabi.cpp
+++ b/kernel/icxxabi.cpp
@@ -1,3 +1,7 @@
+#include <kernel/LockGuard.h>
+#include <kernel/Panic.h>
+#include <kernel/SpinLock.h>
+
 #define ATEXIT_MAX_FUNCS 128
 
 #ifdef __cplusplus
@@ -109,6 +113,35 @@ void __cxa_finalize(void *f)
 	};
 };
 
+
+
+namespace __cxxabiv1 
+{
+	/* guard variables */
+	static Kernel::SpinLock s_spin_lock;
+
+	/* The ABI requires a 64-bit type.  */
+	__extension__ typedef int __guard __attribute__((mode(__DI__)));
+ 
+	int __cxa_guard_acquire (__guard* g)
+	{
+		Kernel::LockGuard lock_guard(s_spin_lock);
+		return !*(int*)g;
+	}
+ 
+	void __cxa_guard_release (__guard* g)
+	{
+		Kernel::LockGuard lock_guard(s_spin_lock);
+		*(int*)g = 1;
+	}
+ 
+	void __cxa_guard_abort (__guard*)
+	{
+		Kernel::panic("__cxa_guard_abort");
+		__builtin_unreachable();
+	}
+}
+
 #ifdef __cplusplus
 };
 #endif