diff options
| author | Hanjie Wu <hanjiew@andrew.cmu.edu> | 2023-04-24 03:51:54 -0400 |
|---|---|---|
| committer | Hanjie Wu <hanjiew@andrew.cmu.edu> | 2023-04-24 03:55:02 -0400 |
| commit | 6b13d5d9b1ff1cb38bb50e918e51a241a225f8da (patch) | |
| tree | 90e8e5da37402975d769184aeb4b51fa13b610f3 /kern/timer_asm.S | |
| parent | e021b8f12ad129c0bdbda3111bb93a170e21ae41 (diff) | |
timer
Diffstat (limited to 'kern/timer_asm.S')
| -rw-r--r-- | kern/timer_asm.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kern/timer_asm.S b/kern/timer_asm.S new file mode 100644 index 0000000..cf4c76f --- /dev/null +++ b/kern/timer_asm.S @@ -0,0 +1,18 @@ +#include <x86/seg.h> +#include <x86/interrupt_defines.h> +#include <x86/timer_defines.h> + +.text + +.global timer_test_handler +.type timer_test_handler, %function +timer_test_handler: + push %eax + mov timer_test_status, %eax + dec %eax + mov %eax, timer_test_status + mov $INT_ACK_CURRENT, %al + mov $INT_CTL_PORT, %dx + outb %al, %dx + pop %eax + iret |