132 lines
2.4 KiB
C
132 lines
2.4 KiB
C
#ifndef CRASHPOWEROS_DESCRIPTION_TABLE_H
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#define CRASHPOWEROS_DESCRIPTION_TABLE_H
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#include <stdint.h>
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#define GDT_LENGTH 6
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typedef struct gdt_entry_t {
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uint16_t limit_low; // 段基址 | 低16位置
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uint16_t base_low; // 段基址 | 高16位置
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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)) gdt_entry_t;
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typedef struct gdt_ptr_t {
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uint16_t limit;
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uint32_t base;
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} __attribute__((packed)) gdt_ptr_t;
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#define DECLARE_ISR(i) extern void isr##i();
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DECLARE_ISR(0)
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DECLARE_ISR(1)
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DECLARE_ISR(2)
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DECLARE_ISR(3)
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DECLARE_ISR(4)
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DECLARE_ISR(5)
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DECLARE_ISR(6)
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DECLARE_ISR(7)
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DECLARE_ISR(8)
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DECLARE_ISR(9)
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DECLARE_ISR(10)
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DECLARE_ISR(11)
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DECLARE_ISR(12)
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DECLARE_ISR(13)
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DECLARE_ISR(14)
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DECLARE_ISR(15)
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DECLARE_ISR(16)
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DECLARE_ISR(17)
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DECLARE_ISR(18)
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DECLARE_ISR(19)
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DECLARE_ISR(20)
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DECLARE_ISR(21)
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DECLARE_ISR(22)
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DECLARE_ISR(23)
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DECLARE_ISR(24)
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DECLARE_ISR(25)
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DECLARE_ISR(26)
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DECLARE_ISR(27)
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DECLARE_ISR(28)
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DECLARE_ISR(29)
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DECLARE_ISR(30)
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DECLARE_ISR(31)
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#undef DECLARE_ISR
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#define DECLARE_IRQ(i) extern void irq##i();
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DECLARE_IRQ(0)
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DECLARE_IRQ(1)
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DECLARE_IRQ(2)
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DECLARE_IRQ(3)
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DECLARE_IRQ(4)
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DECLARE_IRQ(5)
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DECLARE_IRQ(6)
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DECLARE_IRQ(7)
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DECLARE_IRQ(8)
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DECLARE_IRQ(9)
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DECLARE_IRQ(10)
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DECLARE_IRQ(11)
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DECLARE_IRQ(12)
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DECLARE_IRQ(13)
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DECLARE_IRQ(14)
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DECLARE_IRQ(15)
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#undef DECLARE_IRQ
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struct idt_entry_struct {
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uint16_t base_low;
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uint16_t sel;
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uint8_t always0;
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uint8_t flags;
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uint16_t base_high;
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} __attribute__((packed));
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typedef struct idt_entry_struct idt_entry_t;
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// IDTR
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struct idt_ptr_struct {
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uint16_t limit;
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uint32_t base;
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} __attribute__((packed));
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typedef struct idt_ptr_struct idt_ptr_t;
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typedef struct tss_table {
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uint32_t prev_tss;
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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 ebp;
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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 ldt;
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uint16_t trap;
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uint16_t iomap_base;
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} tss_entry;
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void write_tss(int32_t num, uint16_t ss0, uint32_t esp0);
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void gdt_install();
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void idt_install();
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void idt_set_gate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags);
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#endif //CRASHPOWEROS_DESCRIPTION_TABLE_H
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