mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-15 11:22:34 +03:00
46 lines
1.4 KiB
PHP
46 lines
1.4 KiB
PHP
|
; strlen function
|
||
|
|
;
|
||
|
|
; Copyright (c) 2003 Thomas Mathys
|
||
|
|
; killer@vantage.ch
|
||
|
|
;
|
||
|
|
; This program is free software; you can redistribute it and/or modify
|
||
|
|
; it under the terms of the GNU General Public License as published by
|
||
|
|
; the Free Software Foundation; either version 2 of the License, or
|
||
|
|
; (at your option) any later version.
|
||
|
|
;
|
||
|
|
; This program is distributed in the hope that it will be useful,
|
||
|
|
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
; GNU General Public License for more details.
|
||
|
|
;
|
||
|
|
; You should have received a copy of the GNU General Public License
|
||
|
|
; along with this program; if not, write to the Free Software
|
||
|
|
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
;
|
||
|
|
;%ifndef _STRLEN_INC
|
||
|
|
;%define _STRLEN_INC
|
||
|
|
|
||
|
|
|
||
|
|
;********************************************************************
|
||
|
|
; returns the length of an asciiz string
|
||
|
|
; input : esi = pointer to string
|
||
|
|
; output : eax = string length
|
||
|
|
; destroys : nothing
|
||
|
|
;********************************************************************
|
||
|
|
strlen:
|
||
|
|
push ecx
|
||
|
|
push edi
|
||
|
|
pushfd
|
||
|
|
cld ; !
|
||
|
|
mov ecx,-1
|
||
|
|
mov edi,esi ; find terminating zero
|
||
|
|
xor al,al
|
||
|
|
repne scasb
|
||
|
|
mov eax,edi ; calculate string length
|
||
|
|
sub eax,esi
|
||
|
|
dec eax
|
||
|
|
popfd
|
||
|
|
pop edi
|
||
|
|
pop ecx
|
||
|
|
ret
|