gdt support in rust

kernel-rs/src/arch/x86/gdt.rs

@@ -10,7 +10,7 @@ static TSS: Once<tss::TaskStateSegment> = Once::new();
 pub fn init() {
     let tss = tss::TaskStateSegment::new();
     let tss = TSS.call_once(|| {
-        let mut tss = tss::TaskStateSegment::new();
+        let tss = tss::TaskStateSegment::new();
         tss
     });
 
@@ -21,14 +21,25 @@ pub fn init() {
         let mut gdt = gdt::Gdt::new();
         code_selector = gdt.add_entry(gdt::Descriptor::kernel_code_segment());
         tss_selector = gdt.add_entry(gdt::Descriptor::tss_segment(&tss));
+        println!("cs: {:?}", code_selector);
         gdt
     });
 
-    // gdt.load();
-    // unsafe {
-    //     // reload code segment register
-    //     set_cs(code_selector);
-    //     // load TSS
-    //     load_tss(tss_selector);
-    // }
+    println!("0 upper: {:#x}", gdt.table[0] as u32);
+    println!("0 lower: {:#x}", gdt.table[0] >> 32 as u32);
+    println!("1 upper: {:#x}", gdt.table[1] as u32);
+    println!("1 lower: {:#x}", gdt.table[1] >> 32 as u32);
+    println!("2 upper: {:#x}", gdt.table[2] as u32);
+    println!("2 lower: {:#x}", gdt.table[2] >> 32 as u32);
+    println!("3 upper: {:#x}", gdt.table[3] as u32);
+    println!("3 lower: {:#x}", gdt.table[3] >> 32 as u32);
+    flush!();
+
+    gdt.load();
+    unsafe {
+        // reload code segment register
+        set_cs(code_selector);
+        // load TSS
+        load_tss(tss_selector);
+    }
 }

kernel-rs/src/arch/x86/paging/mod.rs

@@ -101,12 +101,6 @@ impl InactivePageTable {
         temporary_page: &mut TemporaryPage,
     ) -> InactivePageTable {
         {
-            println!("mapping temp page:");
-            println!("frame: {:?}", frame);
-            flush!();
-            // unsafe {
-            //     asm!("hlt");
-            // }
             let table = temporary_page.map_table_frame(frame.clone(), active_table);
 
             table.zero();

kernel-rs/src/memory/mod.rs

@@ -46,20 +46,6 @@ pub fn init(boot_info: &multiboot2::BootInformation) {
         memory_map_tag.memory_areas(),
     );
 
-    println!("memory areas from the f allocator:");
-    for area in memory_map_tag.memory_areas() {
-        println!(
-            "    start: {:#x}, end: {:#x} length: {:#x}",
-            area.start_address(),
-            area.end_address(),
-            area.size()
-        );
-    }
-    flush!();
-    // unsafe {
-    //     asm!("hlt");
-    // }
-
     let frame_allocator = RecycleAllocator::new(bump_allocator);
 
     // let stack_allocator = {

kernel-rs/x86

@@ -1 +1 @@
-Subproject commit ae98bfcd4f30217a4bfe944549d222bb07f81deb
+Subproject commit f5e4cb879953ebbeba28a1eaa28bf531424e6824