From 9e0fc222c4ebe975a236dea1171583164f957eef Mon Sep 17 00:00:00 2001
From: Stepan Usatiuk <stepan@usatiuk.com>
Date: Sat, 21 Oct 2023 13:30:26 +0200
Subject: [PATCH] osdev copy paste cpp things

---
 src/arch/x86/CMakeLists.txt |  3 ++-
 src/arch/x86/cppsupport.cpp | 52 +++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 src/arch/x86/cppsupport.cpp

diff --git a/src/arch/x86/CMakeLists.txt b/src/arch/x86/CMakeLists.txt
index 98e4e50b5..845e1d93e 100644
--- a/src/arch/x86/CMakeLists.txt
+++ b/src/arch/x86/CMakeLists.txt
@@ -21,7 +21,8 @@ target_sources(kernel.elf PRIVATE
         paging.cpp
         kmain.cpp
         gdt.cpp
-        misc.cpp)
+        misc.cpp
+        cppsupport.cpp)
 
 target_include_directories(kernel.elf PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
diff --git a/src/arch/x86/cppsupport.cpp b/src/arch/x86/cppsupport.cpp
new file mode 100644
index 000000000..45bef693d
--- /dev/null
+++ b/src/arch/x86/cppsupport.cpp
@@ -0,0 +1,52 @@
+//
+// Created by Stepan Usatiuk on 21.10.2023.
+//
+
+#include <cstddef>
+
+#include "kmem.hpp"
+#include "misc.hpp"
+
+extern "C" void __cxa_pure_virtual() {
+    // Do nothing or print an error message.
+}
+
+// TODO: rewrite for multiprocessing
+namespace __cxxabiv1 {
+    /* guard variables */
+
+    /* The ABI requires a 64-bit type.  */
+    __extension__ typedef int __guard __attribute__((mode(__DI__)));
+
+    extern "C" int __cxa_guard_acquire(__guard *);
+    extern "C" void __cxa_guard_release(__guard *);
+    extern "C" void __cxa_guard_abort(__guard *);
+
+    extern "C" int __cxa_guard_acquire(__guard *g) {
+        return !*(char *) (g);
+    }
+
+    extern "C" void __cxa_guard_release(__guard *g) {
+        *(char *) g = 1;
+    }
+
+    extern "C" void __cxa_guard_abort(__guard *) {
+        _hcf();
+    }
+}// namespace __cxxabiv1
+
+void *operator new(size_t size) {
+    return kmalloc(size);
+}
+
+void *operator new[](size_t size) {
+    return kmalloc(size);
+}
+
+void operator delete(void *p) {
+    kfree(p);
+}
+
+void operator delete[](void *p) {
+    kfree(p);
+}
\ No newline at end of file