64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
/* kdtables.h
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* Kernel Discriptor Tables
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*
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* Contains GDT, IDT, and any relevant functions and structs pertaining to them
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*
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*/
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#ifndef KDTABLES_H
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#define KDTABLES_H
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#include <stdint.h>
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// TSS
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typedef struct tss_s {
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uint32_t LINK;
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uint32_t ESP0;
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uint32_t SS0;
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uint32_t ESP1;
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uint32_t SS1;
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uint32_t ESP2;
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uint32_t SS2;
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uint32_t CR3;
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uint32_t EIP;
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uint32_t EFLAGS;
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uint32_t EAX;
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uint32_t ECX;
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uint32_t EDX;
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uint32_t EBX;
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uint32_t ESP;
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uint32_t ESI;
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uint32_t EDI;
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uint32_t ES;
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uint32_t CS;
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uint32_t SS;
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uint32_t DS;
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uint32_t FS;
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uint32_t GS;
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uint32_t LDTR;
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uint32_t IOPB;
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uint32_t SSP;
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} __attribute__((packed)) tss_t;
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extern tss_t tss;
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//IDT
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typedef struct InterruptDescriptor_s {
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uint16_t offset_1;
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uint16_t selector;
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uint8_t reserved;
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uint8_t attributes;
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uint16_t offset_2;
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} InterruptDescriptor_t;
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typedef struct IDTR_s {
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uint16_t size;
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InterruptDescriptor_t* IDT;
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} IDTR_t;
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extern IDTR_t idtr;
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void setup_idt();
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void write_descriptors();
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void load_idt();
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#endif
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