Kernel: Add kmalloc.cpp to aarch64

Author: https://github.com/jamesmintram
Commit: https://github.com/SerenityOS/serenity/commit/2b442ae44f
Pull-request: https://github.com/SerenityOS/serenity/pull/13484
Reviewed-by: https://github.com/kleinesfilmroellchen ✅

Kernel/Arch/aarch64/dummy.cpp

@@ -120,34 +120,9 @@ READONLY_AFTER_INIT u8 multiboot_framebuffer_bpp;
 READONLY_AFTER_INIT u8 multiboot_framebuffer_type;
 }
 
-// kmalloc.h
-size_t kmalloc_good_size(size_t);
-size_t kmalloc_good_size(size_t) { return 0; }
-
-void* kcalloc(unsigned long, unsigned long) { return nullptr; }
-
-void kfree_sized(void*, size_t);
-void kfree_sized(void*, size_t) { }
-
-void* kmalloc(size_t);
-void* kmalloc(size_t) { return nullptr; }
-
-void* operator new(size_t size) { return kmalloc(size); }
-void* operator new(size_t size, std::align_val_t) { return kmalloc(size); }
-
-void* operator new(size_t, std::nothrow_t const&) noexcept { return nullptr; }
-void* operator new(size_t, std::align_val_t, std::nothrow_t const&) noexcept { return nullptr; }
-void* operator new[](size_t) { return (void*)0xdeadbeef; }
-void* operator new[](size_t, std::nothrow_t const&) noexcept { return nullptr; }
-
-void operator delete(void*) noexcept { }
-void operator delete(void*, size_t) noexcept { }
-void operator delete(void*, size_t, std::align_val_t) noexcept { }
-void operator delete[](void*) noexcept { }
-void operator delete[](void*, size_t) noexcept { }
-
-namespace std {
-const nothrow_t nothrow;
+// KSyms.cpp
+namespace Kernel {
+bool g_kernel_symbols_available = false;
 }
 
 namespace Kernel {

Kernel/CMakeLists.txt

@@ -422,6 +422,8 @@ else()
         MiniStdLib.cpp
         Prekernel/UBSanitizer.cpp
 
+        Heap/kmalloc.cpp
+
         Memory/AddressSpace.cpp
         Memory/AnonymousVMObject.cpp
         Memory/InodeVMObject.cpp

Kernel/Heap/kmalloc.cpp

@@ -6,6 +6,7 @@
 
 #include <AK/Assertions.h>
 #include <AK/Types.h>
+#include <Kernel/Arch/PageDirectory.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Heap/Heap.h>
 #include <Kernel/Heap/kmalloc.h>
@@ -327,7 +328,7 @@ struct KmallocGlobalData {
 
         expansion_data->next_virtual_address = expansion_data->next_virtual_address.offset(new_subheap_size);
 
-        auto cpu_supports_nx = Processor::current().has_feature(CPUFeature::NX);
+        auto cpu_supports_nx = Processor::current().has_nx();
 
         SpinlockLocker mm_locker(Memory::s_mm_lock);
         SpinlockLocker pd_locker(MM.kernel_page_directory().get_lock());