e4cc638a8d
This commit adds GDT initialization with proper code/data segments and reloads CS. It also adds the initial IDT structure and loads an empty IDT. Build configuration updated to disable SSE/MMX to prevent compiler generation of unsupported instructions in early boot.
26 lines
450 B
C
26 lines
450 B
C
#ifndef GDT_H
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#define GDT_H
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#include <stdint.h>
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/* GDT Entry Structure */
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struct gdt_entry {
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uint16_t limit_low;
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uint16_t base_low;
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uint8_t base_middle;
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uint8_t access;
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uint8_t granularity;
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uint8_t base_high;
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} __attribute__((packed));
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/* GDT Pointer Structure */
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struct gdt_ptr {
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uint16_t limit;
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uint32_t base;
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} __attribute__((packed, aligned(1)));
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/* Initialize GDT */
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void init_gdt(void);
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#endif // GDT_H
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