mirror of
https://github.com/cc65/cc65.git
synced 2024-11-18 15:05:14 +00:00
53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
27 lines
331 B
ArmAsm
27 lines
331 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 31.05.1998
|
|
;
|
|
; int strlen (const char* s);
|
|
;
|
|
|
|
.export _strlen
|
|
.importzp ptr1
|
|
|
|
_strlen:
|
|
sta ptr1 ; Save s
|
|
stx ptr1+1
|
|
ldx #0 ; YX used as counter
|
|
ldy #0
|
|
|
|
L1: lda (ptr1),y
|
|
beq L9
|
|
iny
|
|
bne L1
|
|
inc ptr1+1
|
|
inx
|
|
bne L1
|
|
|
|
L9: tya ; get low byte of counter, hi's all set
|
|
rts
|
|
|