109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
#ifndef MINIOS_KERN_TRAP_H
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#define MINIOS_KERN_TRAP_H
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#define INT_M_CTL 0x20 /* I/O port for interrupt controller <Master> */
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#define INT_M_CTLMASK 0x21 /* setting bits in this port disables ints <Master> */
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#define INT_S_CTL 0xA0 /* I/O port for second interrupt controller <Slave> */
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#define INT_S_CTLMASK 0xA1 /* setting bits in this port disables ints <Slave> */
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/* Hardware interrupts */
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#define NR_IRQ 16 /* Number of IRQs */
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#define CLOCK_IRQ 0
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#define KEYBOARD_IRQ 1
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#define CASCADE_IRQ 2 /* cascade enable for 2nd AT controller */
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#define ETHER_IRQ 3 /* default ethernet interrupt vector */
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#define SECONDARY_IRQ 3 /* RS232 interrupt vector for port 2 */
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#define RS232_IRQ 4 /* RS232 interrupt vector for port 1 */
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#define XT_WINI_IRQ 5 /* xt winchester */
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#define FLOPPY_IRQ 6 /* floppy disk */
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#define PRINTER_IRQ 7
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#define AT_WINI_IRQ 14 /* at winchester */
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/* 执行用户进程的入口(汇编接口) */
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void restart();
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/* 导入中断处理函数(汇编接口) */
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// 系统调用
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void int_syscall();
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// 异常
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void divide_error();
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void single_step_exception();
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void nmi();
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void breakpoint_exception();
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void overflow();
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void bounds_check();
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void inval_opcode();
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void copr_not_available();
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void double_fault();
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void copr_seg_overrun();
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void inval_tss();
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void segment_not_present();
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void stack_exception();
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void general_protection();
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void page_fault();
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void copr_error();
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// 外设（时钟、键盘等）
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void hwint00();
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void hwint01();
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void hwint02();
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void hwint03();
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void hwint04();
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void hwint05();
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void hwint06();
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void hwint07();
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void hwint08();
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void hwint09();
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void hwint10();
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void hwint11();
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void hwint12();
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void hwint13();
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void hwint14();
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void hwint15();
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/* 中断开关 */
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void enable_irq(int irq);
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void disable_irq(int irq);
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// kern/main.c
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/* 标志着内核是否初始化完成 */
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extern bool init_kernel;
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static inline void
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disable_int()
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{
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asm volatile("cli");
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}
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static inline void
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enable_int()
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{
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asm volatile("sti");
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}
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#define DISABLE_INT() \
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{ \
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u32 IF_BIT = read_eflags() & FL_IF; \
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if (IF_BIT != 0) \
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disable_int();
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#define ENABLE_INT() \
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if (IF_BIT != 0) \
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enable_int(); \
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}
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/* 系统调用实际处理函数(C接口) */
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void syscall_handler(void);
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/* 异常中断实际处理函数(C接口) */
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void exception_handler(int vec_no, int err_code, int eip,
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int cs, int eflags);
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/* 外设中断实际处理函数(C接口) */
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void default_interrupt_handler(int irq);
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void clock_interrupt_handler(int irq);
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void kb_interrupt_handler(int irq);
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/* 外设中断实际处理函数表 */
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// kern/trap.c
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extern void (*irq_table[])(int);
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#endif /* MINIOS_KERN_TRAP_H */ |