1 files changed, 0 insertions, 90 deletions
diff --git a/kernel/l0/gdt.c b/kernel/l0/gdt.c
deleted file mode 100644
index eadde5f..0000000
--- a/kernel/l0/gdt.c
+++ /dev/null
@@ -1,90 +0,0 @@
-#include <gdt.h>
-#include <string.h>
-
-#define GDT_ENTRIES 6	// The contents of each entry is defined in gdt_init.
-
-/* 	One entry of the table */
-struct gdt_entry {
-	uint16_t limit_low;
-	uint16_t base_low;
-	uint8_t base_middle;
-	uint8_t access;
-	uint8_t granularity;
-	uint8_t base_high;
-} __attribute__((packed));
-typedef struct gdt_entry gdt_entry_t;
-
-/*	Structure defining the whole table : address and size (in bytes). */
-struct gdt_ptr {
-	uint16_t limit;
-	uint32_t base;
-} __attribute__((packed));
-typedef struct gdt_ptr gdt_ptr_t;
-
-/*	The TSS is used for hardware multitasking.
-	We don't use that, but we still need a TSS so that user mode process exceptions
-	can be handled correctly by the kernel.	*/
-struct tss_entry {
-	uint32_t prev_tss;   // The previous TSS - if we used hardware task switching this would form a linked list.
-	uint32_t esp0;       // The stack pointer to load when we change to kernel mode.
-	uint32_t ss0;        // The stack segment to load when we change to kernel mode.
-	uint32_t esp1;       // Unused...
-	uint32_t ss1;
-	uint32_t esp2;
-	uint32_t ss2;
-	uint32_t cr3;
-	uint32_t eip;
-	uint32_t eflags;
-	uint32_t eax;
-	uint32_t ecx;
-	uint32_t edx;
-	uint32_t ebx;
-	uint32_t esp;
-	uint32_t ebp;
-	uint32_t esi;
-	uint32_t edi;
-	uint32_t es;         // The value to load into ES when we change to kernel mode.
-	uint32_t cs;         // The value to load into CS when we change to kernel mode.
-	uint32_t ss;         // The value to load into SS when we change to kernel mode.
-	uint32_t ds;         // The value to load into DS when we change to kernel mode.
-	uint32_t fs;         // The value to load into FS when we change to kernel mode.
-	uint32_t gs;         // The value to load into GS when we change to kernel mode.
-	uint32_t ldt;        // Unused...
-	uint16_t trap;
-	uint16_t iomap_base;
-} __attribute__((packed));
-typedef struct tss_entry tss_entry_t;
-
-// ========================= //
-// Actual definitions
-
-static gdt_entry_t gdt_entries[GDT_ENTRIES];
-static gdt_ptr_t gdt_ptr;
-
-/*	For internal use only. Writes one entry of the GDT with given parameters. */
-static void gdt_set_gate(int num, uint32_t base, uint32_t limit, uint8_t access, uint8_t gran) {
-	gdt_entries[num].base_low = (base & 0xFFFF);
-	gdt_entries[num].base_middle = (base >> 16) & 0xFF;
-	gdt_entries[num].base_high = (base >> 24) & 0xFF;
-
-	gdt_entries[num].limit_low = (limit & 0xFFFF);
-	gdt_entries[num].granularity = (limit >> 16) & 0x0F;
-	gdt_entries[num].granularity |= gran & 0xF0;
-	gdt_entries[num].access = access;
-}
-
-/*	Write data to the GDT and enable it. */
-void gdt_init() {
-	gdt_ptr.limit = (sizeof(gdt_entry_t) * GDT_ENTRIES) - 1;
-	gdt_ptr.base = (uint32_t)&gdt_entries;
-
-	gdt_set_gate(0, 0, 0, 0, 0);					//Null segment
-	gdt_set_gate(1, 0, 0xFFFFFFFF, 0x9A, 0xCF);		//Kernel code segment	0x08
-	gdt_set_gate(2, 0, 0xFFFFFFFF, 0x92, 0xCF);		//Kernel data segment	0x10
-	gdt_set_gate(3, 0, 0xFFFFFFFF, 0xFA, 0xCF);		//User code segment		0x18
-	gdt_set_gate(4, 0, 0xFFFFFFFF, 0xF2, 0xCF);		//User data segment		0x20
-
-	asm volatile ("lgdt %0"::"m"(gdt_ptr):"memory");
-}
-
-/* vim: set ts=4 sw=4 tw=0 noet :*/