void init_idt()
{
int i;
for (i = 0;i < NR_IRQ;i ++)
{
set_trap(idt + i, SEG_KERNEL_CODE, (uint32_t)irq_empty, DPL_KERNEL);
}
set_trap(idt + 0, SEG_KERNEL_CODE, (uint32_t)vec0, DPL_KERNEL);
set_trap(idt + 1, SEG_KERNEL_CODE, (uint32_t)vec1, DPL_KERNEL);
set_trap(idt + 2, SEG_KERNEL_CODE, (uint32_t)vec2, DPL_KERNEL);
set_trap(idt + 3, SEG_KERNEL_CODE, (uint32_t)vec3, DPL_KERNEL);
set_trap(idt + 4, SEG_KERNEL_CODE, (uint32_t)vec4, DPL_KERNEL);
set_trap(idt + 5, SEG_KERNEL_CODE, (uint32_t)vec5, DPL_KERNEL);
set_trap(idt + 6, SEG_KERNEL_CODE, (uint32_t)vec6, DPL_KERNEL);
set_trap(idt + 7, SEG_KERNEL_CODE, (uint32_t)vec7, DPL_KERNEL);
set_trap(idt + 8, SEG_KERNEL_CODE, (uint32_t)vec8, DPL_KERNEL);
set_trap(idt + 9, SEG_KERNEL_CODE, (uint32_t)vec9, DPL_KERNEL);
set_trap(idt + 10, SEG_KERNEL_CODE, (uint32_t)vec10, DPL_KERNEL);
set_trap(idt + 11, SEG_KERNEL_CODE, (uint32_t)vec11, DPL_KERNEL);
set_trap(idt + 12, SEG_KERNEL_CODE, (uint32_t)vec12, DPL_KERNEL);
set_trap(idt + 13, SEG_KERNEL_CODE, (uint32_t)vec13, DPL_KERNEL);
set_trap(idt + 14, SEG_KERNEL_CODE, (uint32_t)vec14, DPL_KERNEL);
set_trap(idt + 0x80, SEG_KERNEL_CODE, (uint32_t)vecsys, DPL_USER);
set_intr(idt + 32, SEG_KERNEL_CODE, (uint32_t)irq0, DPL_KERNEL);
set_intr(idt + 32 + 1, SEG_KERNEL_CODE, (uint32_t)irq1, DPL_KERNEL);
set_intr(idt + 32 + 14, SEG_KERNEL_CODE, (uint32_t)irq14, DPL_KERNEL);
save_idt(idt, sizeof(idt));
}
void init_idt() {
int i;
/* 为了防止系统异常终止，所有irq都有处理函数(irq_empty)。 */
for (i = 0; i < NR_IRQ; i ++) {
set_trap(idt + i, SEG_KERNEL_CODE, (uint32_t)irq_empty, DPL_KERNEL);
}
/* 设置异常的中断处理 */
set_trap(idt + 0, SEG_KERNEL_CODE, (uint32_t)vec0, DPL_KERNEL);
set_trap(idt + 1, SEG_KERNEL_CODE, (uint32_t)vec1, DPL_KERNEL);
set_trap(idt + 2, SEG_KERNEL_CODE, (uint32_t)vec2, DPL_KERNEL);
set_trap(idt + 3, SEG_KERNEL_CODE, (uint32_t)vec3, DPL_KERNEL);
set_trap(idt + 4, SEG_KERNEL_CODE, (uint32_t)vec4, DPL_KERNEL);
set_trap(idt + 5, SEG_KERNEL_CODE, (uint32_t)vec5, DPL_KERNEL);
set_trap(idt + 6, SEG_KERNEL_CODE, (uint32_t)vec6, DPL_KERNEL);
set_trap(idt + 7, SEG_KERNEL_CODE, (uint32_t)vec7, DPL_KERNEL);
set_trap(idt + 8, SEG_KERNEL_CODE, (uint32_t)vec8, DPL_KERNEL);
set_trap(idt + 9, SEG_KERNEL_CODE, (uint32_t)vec9, DPL_KERNEL);
set_trap(idt + 10, SEG_KERNEL_CODE, (uint32_t)vec10, DPL_KERNEL);
set_trap(idt + 11, SEG_KERNEL_CODE, (uint32_t)vec11, DPL_KERNEL);
set_trap(idt + 12, SEG_KERNEL_CODE, (uint32_t)vec12, DPL_KERNEL);
set_trap(idt + 13, SEG_KERNEL_CODE, (uint32_t)vec13, DPL_KERNEL);
/* 设置外部中断的处理 */
set_intr(idt + 32, SEG_KERNEL_CODE, (uint32_t)irq0, DPL_KERNEL);
set_intr(idt + 33, SEG_KERNEL_CODE, (uint32_t)irq1, DPL_KERNEL);
/* 写入IDT */
save_idt(idt, sizeof(idt));
}
