Fix segment descriptor bit order of private members

1 files changed, 8 insertions, 5 deletions

diff --git a/arch/x86_64/include/arch/context_switching/descriptor_table/segment_descriptor.hpp b/arch/x86_64/include/arch/context_switching/descriptor_table/segment_descriptor.hpp
index b5697e3..06e2e8a 100644
--- a/arch/x86_64/include/arch/context_switching/descriptor_table/segment_descriptor.hpp
+++ b/arch/x86_64/include/arch/context_switching/descriptor_table/segment_descriptor.hpp
@@ -51,11 +51,14 @@ namespace teachos::arch::context_switching::descriptor_table
     auto get_segment_type() const -> segment_descriptor_type;
 
   private:
-    uint32_t _reserved = {};
-    access_byte _access = {};
-    gdt_flags _flag = {};
-    uint64_t _base = {};
-    std::bitset<20U> _limit = {};
+    // The order in private variables starts for the first variable being the rightmost bit.
+    std::bitset<16U> _limit_1 = {};  ///< First part of the limit field (0 - 15)
+    std::bitset<24U> _base_1 = {};   ///< First part of the base field (16 - 39)
+    access_byte _access = {};        ///< Access byte field (40 - 47)
+    std::bitset<4U> _limit_2 = {};   ///< Second part of the limit field (48 - 51)
+    gdt_flags _flag = {};            ///< Flags field (52 - 55)
+    std::bitset<40U> _base_2 = {};   ///< Second part of the base field (56 - 95)
+    uint32_t _reserved = {};         ///< Reserved field used to ensure this struct is 128 bits big (96 - 127)
   };
 }  // namespace teachos::arch::context_switching::descriptor_table