1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86_64/src/memory/page_table.cpp b/arch/x86_64/src/memory/page_table.cpp
index 60bf94d..e797b22 100644
--- a/arch/x86_64/src/memory/page_table.cpp
+++ b/arch/x86_64/src/memory/page_table.cpp
@@ -1,6 +1,7 @@
 #include "x86_64/memory/page_table.hpp"
 
 #include <algorithm>
+#include <utility>
 
 namespace teachos::memory::x86_64
 {
@@ -25,6 +26,18 @@ namespace teachos::memory::x86_64
     return std::bit_cast<flags>(m_raw & ~frame_number_mask);
   }
 
+  auto page_table::entry::all_flags(flags flags) -> void
+  {
+    m_raw = (m_raw & ~frame_number_mask) | std::to_underlying(flags);
+  }
+
+  auto page_table::entry::operator|=(flags rhs) -> page_table::entry &
+  {
+    auto raw_flags = std::to_underlying(rhs) & ~frame_number_mask;
+    m_raw |= raw_flags;
+    return *this;
+  }
+
   auto page_table::entry::frame() const -> std::optional<struct frame>
   {
     if (present())