int.asm (3303B)
1 ; Defined in `idt.h`. 2 [extern int_handler] 3 4 ; Exceptions 5 global ex0 6 global ex1 7 global ex2 8 global ex3 9 global ex4 10 global ex5 11 global ex6 12 global ex7 13 global ex8 14 global ex9 15 global ex10 16 global ex11 17 global ex12 18 global ex13 19 global ex14 20 global ex15 21 global ex16 22 global ex17 23 global ex18 24 global ex19 25 global ex20 26 global ex21 27 global ex22 28 global ex23 29 global ex24 30 global ex25 31 global ex26 32 global ex27 33 global ex28 34 global ex29 35 global ex30 36 global ex31 37 38 ; IRQs 39 global irq0 40 global irq1 41 global irq2 42 global irq3 43 global irq4 44 global irq5 45 global irq6 46 global irq7 47 global irq8 48 global irq9 49 global irq10 50 global irq11 51 global irq12 52 global irq13 53 global irq14 54 global irq15 55 56 %macro intdef_noerr 1 57 cli 58 push byte 0 59 push byte %1 60 jmp int_common_stub 61 %endmacro 62 63 %macro intdef_err 1 64 cli 65 push byte 0 66 push byte %1 67 jmp int_common_stub 68 %endmacro 69 70 ; Exceptions 71 ex0: intdef_noerr 0 ; Division By Zero 72 ex1: intdef_noerr 1 ; Debug 73 ex2: intdef_noerr 2 ; Non Maskable Interrupt 74 ex3: intdef_noerr 3 ; Breakpoint 75 ex4: intdef_noerr 4 ; Into Detected Overflow 76 ex5: intdef_noerr 5 ; Out of Bounds 77 ex6: intdef_noerr 6 ; Invalid Opcode 78 ex7: intdef_noerr 7 ; No Coprocessor 79 ex8: intdef_err 8 ; Double Fault (with error code) 80 ex9: intdef_noerr 9 ; Coprocessor Segment Overrrun 81 ex10: intdef_err 10 ; Bad TSS (with error code) 82 ex11: intdef_err 11 ; Segment Not Present (with error code) 83 ex12: intdef_err 12 ; Stack Fault (with error code) 84 ex13: intdef_err 13 ; General Protection Fault (with error code) 85 ex14: intdef_err 14 ; Page Fault (with error code) 86 ex15: intdef_noerr 15 ; Unkown Interrupt 87 ex16: intdef_noerr 16 ; Coprocessor Fault 88 ex17: intdef_noerr 17 ; Alignment Check (486+) 89 ex18: intdef_noerr 18 ; Machine Check (Pentium/586+) 90 ex19: intdef_noerr 19 ; Reserved 91 ex20: intdef_noerr 20 ; Reserved 92 ex21: intdef_noerr 21 ; Reserved 93 ex22: intdef_noerr 22 ; Reserved 94 ex23: intdef_noerr 23 ; Reserved 95 ex24: intdef_noerr 24 ; Reserved 96 ex25: intdef_noerr 25 ; Reserved 97 ex26: intdef_noerr 26 ; Reserved 98 ex27: intdef_noerr 27 ; Reserved 99 ex28: intdef_noerr 28 ; Reserved 100 ex29: intdef_noerr 29 ; Reserved 101 ex30: intdef_noerr 30 ; Reserved 102 ex31: intdef_noerr 31 ; Reserved 103 ; IRQs 104 irq0: intdef_noerr 32 ; Programmable Interrupt Timer 105 irq1: intdef_noerr 33 ; Keyboard 106 irq2: intdef_noerr 34 ; Cascade (used internally by the two PICs, never raised) 107 irq3: intdef_noerr 35 ; COM2 (if enabled) 108 irq4: intdef_noerr 36 ; COM1 (if enabled) 109 irq5: intdef_noerr 37 ; LPT2 (if enabled) 110 irq6: intdef_noerr 38 ; Floppy Disk 111 irq7: intdef_noerr 39 ; LPT1 112 irq8: intdef_noerr 40 ; CMOS real-time clock (if enabled) 113 irq9: intdef_noerr 41 ; Peripherals / Legacy SCSI / NIC 114 irq10: intdef_noerr 42 ; Peripherals / SCSI / NIC 115 irq11: intdef_noerr 43 ; Peripherals / SCSI / NIC 116 irq12: intdef_noerr 44 ; PS2 Mouse 117 irq13: intdef_noerr 45 ; FPU / Coprocessor / Inter-processor 118 irq14: intdef_noerr 46 ; Primary ATA Hard Disk 119 irq15: intdef_noerr 47 ; Secondary ATA Hard Disk 120 121 ; Save the processor state, call the C interrupt handler and restore the 122 ; stack frame. 123 int_common_stub: 124 pusha 125 push ds 126 push es 127 push fs 128 push gs 129 mov ax, 0x10 ; Kernel data segment descriptor. 130 mov ds, ax 131 mov es, ax 132 mov fs, ax 133 mov gs, ax 134 mov eax, esp ; Push the stack. 135 push eax 136 mov eax, int_handler 137 call eax 138 pop eax 139 pop gs 140 pop fs 141 pop es 142 pop ds 143 popa 144 add esp, 8 ; Clean up ISR info. 145 sti 146 iret