interrupt.h

用于汇编领域的,运用于OS的MAIN函数.基于硬件基础的源代码

#ifndef	__INTERRUPT_H_
#define	__INTERRUPT_H_

#include "kassert.h"

struct {
	unsigned int gs;
	unsigned int fs;
	unsigned int es;
	unsigned int ds;
	unsigned int ebp;
	unsigned int edi;
	unsigned int esi;
	unsigned int edx;
	unsigned int ecx;
	unsigned int ebx;
	unsigned int eax;

	unsigned int intnum;

	unsigned int errorcode;

	unsigned int eip;
	unsigned int cs;
	unsigned int eflags;
} interrupt_state;

typedef struct interrupt_state interrupt_state_t;
typedef void (*interrupt_handler)(interrupt_state_t *state);

#define EFLAGS_IF	(1 << 9)

void init_interrupt(void);
int is_interrupts_enabled(void);

void mask_irq(unsigned char irq);
void unmask_irq(unsigned char irq);

static __inline__ void __disable_interrupts(void)
{
	__asm__ __volatile__ ("cli");
}

#define disable_interrupts()			\
do {						\
	KASSERT(is_interrupts_enabled());	\
	__disable_interrupts();			\
} while (0)

static __inline__ void __enable_interrupts(void)
{
	__asm__ __volatile__ ("sti");
}

#define enable_interrupts()			\
do {						\
	KASSERT(!is_interrupts_enabled());	\
	__enable_interrupts();			\
} while (0)

void dump_interrupts_state(void);

#endif