1
0
mirror of https://gitlab.os-k.eu/os-k-team/kvisc.git synced 2023-08-25 14:05:46 +02:00
kvisc/dos/str/strlen.k

36 lines
441 B
Plaintext
Raw Normal View History

2019-05-30 12:44:56 +02:00
; The OS/K Team licenses this file to you under the MIT license.
2019-05-29 19:05:06 +02:00
; See the LICENSE file in the project root for more information.
2019-05-22 18:39:46 +02:00
2019-05-29 18:26:28 +02:00
;
2019-05-30 18:31:50 +02:00
; int strlen(char *)
2019-05-29 18:26:28 +02:00
;
2019-05-30 18:31:50 +02:00
strlen:
xor rax, rax
2019-05-29 16:57:22 +02:00
2019-05-30 11:19:16 +02:00
.1:
2019-05-30 11:20:09 +02:00
test b[ax0], b[ax0]
2019-05-30 20:23:27 +02:00
cretz
2019-05-30 18:31:50 +02:00
inc rax
2019-05-29 18:26:28 +02:00
inc ax0
2019-05-30 18:31:50 +02:00
jmp .1
2019-05-29 16:57:22 +02:00
2019-05-29 18:26:28 +02:00
;
2019-05-30 18:31:50 +02:00
; int strnlen(char *, int)
2019-05-29 18:26:28 +02:00
;
2019-05-30 18:31:50 +02:00
strnlen:
xor rax, rax
2019-05-30 12:19:38 +02:00
mov rcx, ax1
2019-05-30 20:23:27 +02:00
;jcxz .2
2019-05-30 18:31:50 +02:00
dec rcx
2019-05-29 18:26:28 +02:00
2019-05-30 11:19:16 +02:00
.1:
2019-05-30 18:31:50 +02:00
test b[ax0], b[ax0]
2019-05-30 20:23:27 +02:00
cretz
2019-05-30 18:31:50 +02:00
inc rax
2019-05-29 16:57:22 +02:00
inc ax0
2019-05-30 11:19:16 +02:00
loop .1
2019-05-29 18:26:28 +02:00
2019-05-22 18:39:46 +02:00
ret