kvisc/ka/crt/str/strcpy.k

; The OS/K Team licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.

;
; void strcpy(char *, const char *)
;
strcpy:
.l:
    mov rcx, b[ax1]
    mov b[ax0], rcx

    ret.cxz

    inc ax0, 1
    inc ax1, 1

    jmp .l

;
; void strncpy(char *, const char *, int)
;
strncpy:
    mov rcx, ax2
    ret.cxz

.l:
    mov b[ax0], b[ax1]

    inc ax0, 1
    inc ax1, 1

    loop .l
    ret

;
; void strnzcpy(char *, const char *, int)
;
strnzcpy:
    mov rcx, ax2
    ret.cxz

.l:
    mov rax, b[ax1]
    mov b[ax0], rax

    jmp.axz .r

    inc ax0, 1
    inc ax1, 1

    loop .l

.z:
    mov b[ax0], zero

.r:
    ret