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Remove user-space GDT entries

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This commit is contained in:
Braiden Vasco 2017-11-02 13:06:39 +00:00
parent 4de2496f80
commit 33ef132611
1 changed files with 4 additions and 4 deletions
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8
arch/gdt.c
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@ -2,6 +2,8 @@
#include "logger.h"
#define GDT_SIZE 3
struct GdtPointer {
unsigned short limit;
unsigned int base;
@ -20,7 +22,7 @@ __attribute__((packed));
static struct GdtPointer gdt_pointer;
static struct GdtEntry gdt_entries[5];
static struct GdtEntry gdt_entries[GDT_SIZE];
static void gdt_set_gate(int num, unsigned int base, unsigned int limit, unsigned char access, unsigned char gran);
@ -33,12 +35,10 @@ void gdt_initialize()
gdt_set_gate(0, 0, 0, 0, 0); // Null segment
gdt_set_gate(1, 0, 0xFFFFFFFF, 0x9A, 0xCF); // Code segment
gdt_set_gate(2, 0, 0xFFFFFFFF, 0x92, 0xCF); // Data segment
gdt_set_gate(3, 0, 0xFFFFFFFF, 0xFA, 0xCF); // User mode code segment
gdt_set_gate(4, 0, 0xFFFFFFFF, 0xF2, 0xCF); // User mode data segment
logger_info("Load GDT.");
gdt_pointer.limit = sizeof(struct GdtEntry) * 5 - 1;
gdt_pointer.limit = sizeof(struct GdtEntry) * GDT_SIZE - 1;
gdt_pointer.base = (unsigned int)&gdt_entries;
gdt_flush((unsigned int)&gdt_pointer);