72 lines
1.4 KiB
C
72 lines
1.4 KiB
C
#include <stdint.h>
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#define NO_NAME "Не задано название"
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#define KERNEL_CS 0x08
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#define KERNEL_DS 0x10
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#define IDT_SIZE 256
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#define IDT_EXCEPTIONS 32
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#define IDT_DPL(x) (((unsigned)(x)&0x3u) << 13)
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#define IDT_KERNEL IDT_DPL(0)
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#define IDT_TYPE(x) (((unsigned)(x)&0xfu) << 8)
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#define IDT_INT_GATE IDT_TYPE(0xeu)
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#define IDT_TRP_FATE IDT_TYPE(0xfu)
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#define IDT_PRESENT (1u << 15)
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#define IDT_EXCEPTION_FLAGS (IDT_KERNEL | IDT_INT_GATE | IDT_PRESENT)
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#define IDT_INTERRUPT_FLAGS (IDT_KERNEL | IDT_INT_GATE | IDT_PRESENT)
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#define IDT_SPURIOUS_FLAGS (IDT_KERNEL | IDT_INT_GATE | IDT_PRESENT)
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struct frame {
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uint64_t rbp;
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uint64_t rbx;
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uint64_t r15;
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uint64_t r14;
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uint64_t r13;
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uint64_t r12;
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uint64_t r11;
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uint64_t r10;
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uint64_t r9;
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uint64_t r8;
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uint64_t rax;
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uint64_t rcx;
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uint64_t rdx;
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uint64_t rsi;
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uint64_t rdi;
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uint64_t int_number;
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uint64_t err;
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uint64_t rip;
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uint64_t cs;
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uint64_t rflags;
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uint64_t rsp;
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uint64_t ss;
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} __attribute__((packed));
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typedef void (*exception_handler_t)(void);
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typedef void (*interrupt_handler_t)(void);
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struct idt_desc {
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uint16_t offs0;
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uint16_t sel;
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uint16_t flags;
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uint16_t offs1;
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uint32_t offs2;
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uint32_t _reserved;
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} __attribute__((packed));
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struct idt_ptr {
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uint16_t limit;
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uint64_t base;
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} __attribute__((packed));
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struct int_desc {
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interrupt_handler_t handler;
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int busy;
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};
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typedef void (*int_entry_t)(void);
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extern int_entry_t isr_stubs[]; |