core: use define for gdt offset

2024-10-02 14:15:49 +02:00
parent 64a3f6ee0d
commit a3bbffcfd9
2 changed files with 15 additions and 6 deletions
--- a/headers/gdt.h
+++ b/headers/gdt.h
@ -30,3 +30,12 @@ void init_gdt();
 #define GDT_ACCESS_RW_READABLE_FOR_CODE_WRITABLE_FOR_DATA 0b00000010
 #define GDT_ACCESS_A_ACCESSED                             0b00000001
 #define GDT_ACCESS_A_NOT_ACCESSED                         0b00000000
+
+extern uint8_t gdt_entries[GDT_SIZE * 8];
+
+#define GDT_OFFSET_KERNEL_CODE  0x08
+#define GDT_OFFSET_KERNEL_DATA  0x10
+#define GDT_OFFSET_KERNEL_STACK 0x18
+#define GDT_OFFSET_USER_CODE    0x20
+#define GDT_OFFSET_USER_DATA    0x28
+#define GDT_OFFSET_USER_STACK   0x30