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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2018-06-19 00:54:43 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2018-06-19 00:54:43 -0400 |
| commit | 47e691cb0b7a49a797c622b6c79162428358fbe1 (patch) | |
| tree | 11cbfcd397d92567953507a0f8482d269bd299d6 /builtin_reboot.asm | |
| parent | 16ce91dac78f9a522d6b5a5f4b0f651e25635a4f (diff) | |
| download | minos-47e691cb0b7a49a797c622b6c79162428358fbe1.tar.gz | |
Implement builtin terminal commands
* Reboot
* Exit
* Echo
Diffstat (limited to 'builtin_reboot.asm')
| -rw-r--r-- | builtin_reboot.asm | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/builtin_reboot.asm b/builtin_reboot.asm new file mode 100644 index 0000000..54d6f8a --- /dev/null +++ b/builtin_reboot.asm @@ -0,0 +1,29 @@ +%ifndef _BUILTIN_REBOOT_ASM +%define _BUILTIN_REBOOT_ASM + +builtin_reboot: + mov bx, 3 ; number of seconds + .countdown: + push bx + push .msg_reboot_count + call printf + add sp, 2 * 2 + + mov ah, 86h + mov cx, 0fh + mov dx, 4240h + int 15h + + dec bx + jne .countdown + + push .msg_reboot + call printf + add sp, 2 * 1 + + jmp 0FFFFh:0000h ; issue reboot + .msg_reboot_count db 'rebooting in %d seconds...\r', 0 + .msg_reboot db '\nreboot...\n', 0 + ; no return, and the stack is irrelevant here + +%endif |