38 lines
760 B
C
38 lines
760 B
C
#pragma once
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#define SEG_KCODE 0x08
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#define SEG_KDATA 0x10
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#define SEG_UDATA 0x18
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#define SEG_UCODE 0x20
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#ifdef __ASSEMBLER__
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#define GDT_WRITE (1<<41)
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#define GDT_EXECUTE (1<<43)
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#define GDT_CODEDATA (1<<44)
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#define GDT_PRESENT (1<<47)
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#define GDT_64BIT (1<<53)
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#else
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#define GDT_WRITE (1LL<<41)
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#define GDT_EXECUTE (1LL<<43)
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#define GDT_CODEDATA (1LL<<44)
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#define GDT_PRESENT (1LL<<47)
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#define GDT_64BIT (1LL<<53)
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#define GDT_RING3 (3LL<<45)
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#define GDT_TSS (9LL<<40)
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#include <stdint.h>
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extern uint64_t BootGDT;
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struct gdtp_st
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{
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uint16_t len;
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uint64_t addr;
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uint16_t pad1;
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uint32_t pad2;
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}__attribute__((packed));
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void load_gdt(struct gdtp_st *);
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void gdt_init();
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#endif
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