57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#include <stdio.h>
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#include "bootpack.h"
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#include "console.h"
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#include "fifo.h"
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#include "graphic.h"
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#include "int.h"
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#include "io.h"
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#include "keyboard.h"
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#include "mouse.h"
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#include "task.h"
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void init_pic(void) {
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// 禁止所有中断
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io_out8(PIC0_IMR, 0xff);
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io_out8(PIC1_IMR, 0xff);
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io_out8(PIC0_ICW1, 0x11); // 边缘触发模式
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io_out8(PIC0_ICW2, 0x20); // IRQ0-7由INT20-27接收
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io_out8(PIC0_ICW3, 1 << 2); // PIC1由IRQ2连接
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io_out8(PIC0_ICW4, 0x01); // 无缓冲区模式
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io_out8(PIC1_ICW1, 0x11); // 边缘触发模式
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io_out8(PIC1_ICW2, 0x28); // IRQ8-15由INT28-2f接收
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io_out8(PIC1_ICW3, 2); // PIC1由IRQ2连接
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io_out8(PIC1_ICW4, 0x01); // 无缓冲区模式
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io_out8(PIC0_IMR, 0xfb); // PIC1以外中断全部禁止
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io_out8(PIC1_IMR, 0xff); // 禁止全部中断
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}
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int *int_handler0c(int *esp) {
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struct Console *cons = (struct Console *)*((int *)0x0fec);
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struct Task *task = task_now();
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char s[30];
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cons_putstr(cons, "\nINT 0C:\n Stack Exception.\n");
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sprintf(s, "EIP = %08X\n", esp[11]);
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cons_putstr(cons, s);
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return &(task->tss.esp0);
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}
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int *int_handler0d(int *esp) {
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struct Console *cons = (struct Console *)*((int *)0x0fec);
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struct Task *task = task_now();
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char s[30];
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cons_putstr(cons, "\nINT 0D:\n General Protected Exception.\n");
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sprintf(s, "EIP = %08X\n", esp[11]);
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cons_putstr(cons, s);
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return &(task->tss.esp0);
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}
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void int_handler27(int *esp) { io_out8(PIC0_OCW2, 0x67); }
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