mirror of
https://github.com/tailix/kernel.git
synced 2024-10-30 12:03:52 -04:00
55 lines
1.2 KiB
NASM
55 lines
1.2 KiB
NASM
#include "config.h"
|
|
|
|
[EXTERN hwint_handler]
|
|
|
|
%macro HWINT 2
|
|
[GLOBAL hwint_%1]
|
|
hwint_%1:
|
|
cli
|
|
push byte 0
|
|
push byte %2
|
|
jmp hwint_common_stub
|
|
%endmacro
|
|
|
|
HWINT 0, 32 ; Programmable Interval Timer
|
|
HWINT 1, 33 ; Keyboard
|
|
HWINT 2, 34 ; Slave PIC
|
|
HWINT 3, 35 ; COM 2/4
|
|
HWINT 4, 36 ; COM 1/3
|
|
HWINT 5, 37 ; LPT 2
|
|
HWINT 6, 38 ; Floppy Drive Controller
|
|
HWINT 7, 39 ; LPT 1
|
|
|
|
HWINT 8, 40 ; Real Time Clock
|
|
HWINT 9, 41 ; Master PIC
|
|
HWINT 10, 42 ; Reserved
|
|
HWINT 11, 43 ; Reserved
|
|
HWINT 12, 44 ; Reserved
|
|
HWINT 13, 45 ; Coprocessor exception
|
|
HWINT 14, 46 ; Hard Drive Controller
|
|
HWINT 15, 47 ; Reserved
|
|
|
|
hwint_common_stub:
|
|
pusha ; Pushes edi,esi,ebp,esp,ebx,edx,ecx,eax
|
|
|
|
mov ax, ds ; Lower 16-bits of eax = ds.
|
|
push eax ; save the data segment descriptor
|
|
|
|
mov ax, GDT_KERNEL_DS_SELECTOR
|
|
mov ds, ax
|
|
mov es, ax
|
|
mov fs, ax
|
|
mov gs, ax
|
|
|
|
call hwint_handler
|
|
|
|
pop eax ; reload the original data segment descriptor
|
|
mov ds, ax
|
|
mov es, ax
|
|
mov fs, ax
|
|
mov gs, ax
|
|
|
|
popa ; Pops edi,esi,ebp...
|
|
add esp, 8 ; Cleans up the pushed error code and pushed ISR number
|
|
sti
|
|
iret ; pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP
|