Added new entries.
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@ -25,7 +25,7 @@
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* 3/4 - user entries
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* 5 - TSS entry
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*/
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#define GDT_SIZE 3
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#define GDT_SIZE 6
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struct segdesc gdt[GDT_SIZE];
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struct segreg gdtr;
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@ -51,8 +51,15 @@ void gdt_install() {
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gdtr.limit = sizeof(gdt)-1;
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gdt_entry_set(&gdt[0], 0, 0, 0, 0);
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// kernel
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gdt_entry_set(&gdt[1], 0, 0xFFFFFFFF, 0x9A, 0xCF);
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gdt_entry_set(&gdt[2], 0, 0xFFFFFFFF, 0x92, 0xCF);
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// user
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gdt_entry_set(&gdt[3], 0, 0xFFFFFFFF, 0xFA, 0xCF);
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gdt_entry_set(&gdt[4], 0, 0xFFFFFFFF, 0xF2, 0xCF);
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// TSS
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// TODO: create a proper TSS
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gdt_entry_set(&gdt[5], 0, 0, 0x91, 0x40);
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gdt_flush(&gdtr);
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}
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