minix/lib/i86/string/strncpy.s
2009-11-09 10:26:00 +00:00

23 lines
487 B
ArmAsm

! strncpy() Author: Kees J. Bot
! 27 Jan 1994
.sect .text; .sect .rom; .sect .data; .sect .bss
! char *strncpy(char *s1, const char *s2, size_t n)
! Copy string s2 to s1.
!
.sect .text
.define _strncpy
_strncpy:
push bp
mov bp, sp
push si
push di
mov cx, 8(bp) ! Maximum length
call __strncpy ! Common code
mov cx, dx ! Number of bytes not copied
rep stosb ! strncpy always copies n bytes by null padding
mov ax, 4(bp) ! Return s1
pop di
pop si
pop bp
ret