src/core/int.S


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

.macro  SAVE_REGS
pushal             
push %ds
push %es
push %fs
push %gs
push %ebx
mov $0x10,%bx
mov %bx,%ds
pop %ebx
.endm

.macro RESTORE_REGS
    pop %gs
    pop %fs
    pop %es
    pop %ds
    popal
.endm

.globl interrupt_enable
interrupt_enable:
    call idt_init
    call pic_init
    sti
    ret

.globl INT_DEFAULT
INT_DEFAULT:
    SAVE_REGS
    movb $0x20, %al
    outb %al, $0x20
    RESTORE_REGS
    iret

.globl INT_KEYPRESS
INT_KEYPRESS:
    SAVE_REGS
    call _8042_keypress
    movb $0x20, %al
    outb %al, $0x20
    RESTORE_REGS
    iret

.globl INT_CLOCK
INT_CLOCK:
    SAVE_REGS
    call clock
    movb $0x20, %al
    outb %al, $0x20
    RESTORE_REGS
    iret

.globl INT_SYSCALL
INT_SYSCALL:
    SAVE_REGS
    call syscall
    movb $0x20, %al
    outb %al, $0x20
    RESTORE_REGS
    iret

.globl INT_PAGE_FAULT
INT_PAGE_FAULT:
    SAVE_REGS
    call paging_page_fault
    movb $0x20, %al
    outb %al, $0x20
    RESTORE_REGS
    iret