osdev copy paste cpp things

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})
 

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);
+}