27 lines
698 B
C
27 lines
698 B
C
|
#ifndef X86_64_INTERRUPT_H
|
|||
|
|
#define X86_64_INTERRUPT_H 1
|
|||
|
|
|
|||
|
|
#include <types.h>
|
|||
|
|
|
|||
|
|
typedef struct __gate_descriptor_t
|
|||
|
|
{
|
|||
|
|
u16 offset_01;
|
|||
|
|
u16 segment_selector; // for code segment
|
|||
|
|
u16 flags;
|
|||
|
|
u16 offset_23;
|
|||
|
|
u32 offset_4567;
|
|||
|
|
u32 reserved;
|
|||
|
|
} gate_descriptor_t;
|
|||
|
|
|
|||
|
|
// interrupt stack table，每个表项都指向tss
|
|||
|
|
// 需要加载寄存器IA32_INTERRUPT_SSP_TABLE
|
|||
|
|
#define INTERRUPT_DESCRIPTOR_FLAG_IST(ssp) (ssp)
|
|||
|
|
|
|||
|
|
// 在第15位上有一个表示代码段是否存在的标志位，代码段总是存在，故直接设置为1
|
|||
|
|
#define INTERRUPT_DESCRIPTOR_FLAG_TYPE_INTERRUPT (0x8e << 8)
|
|||
|
|
#define INTERRUPT_DESCRIPTOR_FLAG_TYPE_TRAP (0x8f << 8)
|
|||
|
|
|
|||
|
|
extern gate_descriptor_t idt[256];
|
|||
|
|
|
|||
|
|
#endif
|