1 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86_64/src/memory/frame_allocator.cpp b/arch/x86_64/src/memory/frame_allocator.cpp
index 829cd6d..3ad2d96 100644
--- a/arch/x86_64/src/memory/frame_allocator.cpp
+++ b/arch/x86_64/src/memory/frame_allocator.cpp
@@ -2,6 +2,34 @@
 
 namespace teachos::arch::memory
 {
+  frame::frame(std::size_t frame_number)
+      : frame_number(frame_number)
+  {
+    // Nothing to do
+  }
+
+  auto frame::containing_address(std::size_t address) -> frame { return frame{address / PAGE_FRAME_SIZE}; }
+
+  memory_area_iterator::memory_area_iterator(memory_area * p)
+      : ptr(p)
+  {
+    // Nothing to do
+  }
+
+  memory_area & memory_area_iterator::operator*() const { return *ptr; }
+
+  auto memory_area_iterator::operator++(int) -> memory_area_iterator
+  {
+    ++(*this);
+    return *this;
+  }
+
+  auto memory_area_iterator::operator++() -> memory_area_iterator &
+  {
+    ++ptr;
+    return *this;
+  }
+
   auto area_frame_allocator::choose_next_area() -> void
   {
     current_area = std::nullopt;
@@ -77,4 +105,8 @@ namespace teachos::arch::memory
     {
     }
   }
+
+  auto area_frame_allocator::begin() -> memory_area_iterator { return area_begin; }
+
+  auto area_frame_allocator::end() -> memory_area_iterator { return area_end; }
 }  // namespace teachos::arch::memory