43 lines
849 B
C
43 lines
849 B
C
#include <stdio.h>
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#include <stdint.h>
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#include <kernel/tty.h>
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#include <kernel/serial.h>
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#include <kernel/x86/gdt.h>
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#include <kernel/x86/idt.h>
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#define GDT_SIZE 5
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uint64_t gdt[GDT_SIZE];
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void gdt_init(void)
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{
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gdt[0] = create_descriptor(0, 0, 0); // null
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gdt[1] = create_descriptor(0, 0x000FFFFF, (GDT_CODE_PL0)); // kernel code
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gdt[2] = create_descriptor(0, 0x000FFFFF, (GDT_DATA_PL0)); // kernel data
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gdt[3] = create_descriptor(0, 0x000FFFFF, (GDT_CODE_PL3)); // user code
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gdt[4] = create_descriptor(0, 0x000FFFFF, (GDT_DATA_PL3)); // user data
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setGdt((sizeof(uint64_t) * GDT_SIZE) - 1, &(gdt[0])); // limit, base
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reloadSegments();
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}
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#undef GDT_SIZE
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void kmain(void)
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{
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gdt_init();
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idt_init();
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terminal_initialize();
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serial_initialize();
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terminal_writestring("test");
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serial_writestring("test!");
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printf("test..");
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}
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