38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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#ifndef IDT_H
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#define IDT_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <shade/platform/gdt.h>
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#define IDT_DESCRIPTORS 256
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extern void* isr_stub_table[];
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typedef struct idt_entry_struct {
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uint16_t isr_low; // Low 16 bits of handler address
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uint16_t kernel_cs; // The selector in the GDT that the CPU will load into CS before calling the handler
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uint8_t ist; // The IST in the TSS that the CPU will load into RSP; set to zero for now
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uint8_t attributes; // Type and attributes
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uint16_t isr_mid; // Middle 16 bits of handler address
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uint32_t isr_high; // Upper 32 bits of handler address
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uint32_t reserved; // Reserved, set to 0
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} __attribute__((packed)) idt_descriptor_t;
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typedef struct idt_ptr_struct {
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uint16_t limit;
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uint64_t base;
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} __attribute__((packed)) idt_ptr_t;
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__attribute__((aligned(0x10)))
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static idt_descriptor_t idt[IDT_DESCRIPTORS];
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static idt_ptr_t idt_ptr;
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static bool vectors[IDT_DESCRIPTORS];
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void idt_set_gate(uint8_t index, void* isr, uint8_t flags);
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void idt_assemble();
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void idt_enable_interrupts();
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void idt_disable_interrupts();
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#endif
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