Fix linker error using friend method 👬

1 files changed, 22 insertions, 5 deletions

diff --git a/arch/x86_64/src/kernel/main.cpp b/arch/x86_64/src/kernel/main.cpp
index 8e5aa05..3e25d2d 100644
--- a/arch/x86_64/src/kernel/main.cpp
+++ b/arch/x86_64/src/kernel/main.cpp
@@ -10,6 +10,7 @@
 
 namespace teachos::arch::kernel
 {
+
   auto main() -> void
   {
     video::vga::text::clear();
@@ -19,6 +20,25 @@ namespace teachos::arch::kernel
     auto memory_information = memory::multiboot::read_multiboot2();
     memory::allocator::area_frame_allocator allocator(memory_information);
 
+    size_t address = 42 * memory::paging::PAGE_TABLE_ENTRY_COUNT * memory::paging::PAGE_TABLE_ENTRY_COUNT *
+                     memory::allocator::PAGE_FRAME_SIZE;  // 42th P3 entry
+    auto page = memory::paging::virtual_page::containing_address(address);
+    auto frame = allocator.allocate_frame();
+    exception_handling::assert(frame.has_value(), "[Main] Out of memory exception");
+    auto optional_frame = memory::paging::translate_page(page);
+    memory::paging::map_page_to_frame(allocator, page, frame.value(), 0U);
+    optional_frame = memory::paging::translate_page(page);
+    video::vga::text::newline();
+    video::vga::text::write("Mapped physical frame: ", video::vga::text::common_attributes::green_on_black);
+    video::vga::text::write_number(optional_frame.value().frame_number,
+                                   video::vga::text::common_attributes::green_on_black);
+
+    memory::paging::unmap_page(allocator, page);
+    video::vga::text::write("Unapped physical page: ", video::vga::text::common_attributes::green_on_black);
+    optional_frame = memory::paging::translate_page(page);
+    exception_handling::assert(!optional_frame.has_value(), "[Main] Ummapping failed");
+    video::vga::text::write_number(page.page_number, video::vga::text::common_attributes::green_on_black);
+
     auto last_allocated = allocator.allocate_frame();
     auto allocated = last_allocated;
     do
@@ -26,12 +46,9 @@ namespace teachos::arch::kernel
       last_allocated = allocated;
       allocated = allocator.allocate_frame();
     } while (allocated);
-    video::vga::text::write("Allocated Frames", video::vga::text::common_attributes::green_on_black);
+    video::vga::text::newline();
+    video::vga::text::write("Allocated Frames: ", video::vga::text::common_attributes::green_on_black);
     video::vga::text::write_number(last_allocated.value().frame_number,
                                    video::vga::text::common_attributes::green_on_black);
-    memory::paging::map_page_to_frame(allocator, memory::paging::virtual_page{0U}, last_allocated.value(), 0U);
-    memory::paging::map_next_free_page_to_frame(allocator, memory::paging::virtual_page{0U}, 0U);
-    memory::paging::identity_map(allocator, last_allocated.value(), 0U);
-    memory::paging::unmap_page(allocator, memory::paging::virtual_page{0U});
   }
 }  // namespace teachos::arch::kernel