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dead@root

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assada
2024-05-25 19:20:33 +03:00
commit ea8f6b4ce0
39 changed files with 1769 additions and 0 deletions
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63
gdt.h Normal file
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#ifndef GDT_H
#define GDT_H
#include <stdint.h>
extern uint32_t stack_top;
typedef struct gdt_entry_t Gdt_entry;
struct gdt_entry_t
{
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_ptr_t Gdt_ptr;
struct gdt_ptr_t
{
uint16_t limit;
uint32_t base;
} __attribute__((packed));
static void gdt_set_gate(uint8_t num, uint32_t base, uint32_t limit, uint8_t access, uint8_t granularity);
void gdt_install();
void set_kernel_stack(uint32_t stack);
typedef struct tss_entry_t Tss_entry;
struct tss_entry_t
{
uint32_t prevTss;
uint32_t esp0;
uint32_t ss0;
uint32_t esp1;
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;
uint32_t cs;
uint32_t ss;
uint32_t ds;
uint32_t fs;
uint32_t gs;
uint32_t ldt;
uint16_t trap;
uint16_t iomap;
} __attribute__((packed));
#endif