Makefile

@@ -25,7 +25,7 @@ bochs: $(KERNEL_HDD) ext/bochsrc
 	rm bochsout.txt
 
 gdb:
-	QEMUFLAGS="-s -S" $(MAKE) run & (sleep 1; gdb -x ext/gdbinit)
+	QEMUFLAGS="-s -S" $(MAKE) run & gdb -x ext/gdbinit
 
 ext/limine/limine-install:
 	$(MAKE) -C ext/limine/ limine-install

kernel/src/arch/x86_64/entry-stivale2.c

@@ -42,8 +42,6 @@ void stivale2_main(struct stivale2_struct *info) {
     );
     printf("PAGE TABLE AT: %x\n", cr3);
 
-    loadgdt();
-
     struct gdt_ptr pGDT;
     __asm__ __volatile__("sgdt %0" : : "m"(pGDT) : "memory");
     printf("GDT: %x (%d)\n", pGDT.base, pGDT.limit);

kernel/src/arch/x86_64/gdt.nasm

@@ -1,15 +1,10 @@
 section .rodata
-align 8
 gdt64:
     dq 0
-.codesys: equ $-gdt64
+.code: equ $-gdt64
     dq (1<<44) | (1<<47) | (1<<41) | (1<<43) | (1<<53)
-.datasys: equ $-gdt64
+.data: equ $ - gdt64
     dq (1<<44) | (1<<47) | (1<<41)
-.codeusr: equ $-gdt64
-    dq (1<<44) | (1<<47) | (1<<41) | (1<<43) | (1<<53) | (3<<45)
-.datausr: equ $-gdt64
-    dq (1<<44) | (1<<47) | (1<<41) | (3<<45)
 .pointer:
     dw .pointer - gdt64 - 1
     dq gdt64
@@ -18,18 +13,4 @@ section .text
 global loadgdt
 loadgdt:
     lgdt [gdt64.pointer]
-    ; now what I tried unsuccessfully:
-
-    mov rax, gdt64.codesys;
-    push rax
-    mov rax, loadgdtdone
-    push rax   ; function to execute next
-    retfq               ; far return (pops address and code segment)
-loadgdtdone:
-    mov ax, gdt64.datasys
-    mov ss, ax
-    mov ds, ax
-    mov es, ax
-    mov fs, ax
-    mov gs, ax
-    ret
+