; $Id$

;; @file

; IPRT - No-CRT strcpy - AMD64 & X86.

;

;

; Copyright (C) 2006-2007 Sun Microsystems, Inc.

;

; This file is part of VirtualBox Open Source Edition (OSE), as

; available from http://www.virtualbox.org. This file is free software;

; you can redistribute it and/or modify it under the terms of the GNU

; General Public License (GPL) as published by the Free Software

; Foundation, in version 2 as it comes in the "COPYING" file of the

; VirtualBox OSE distribution. VirtualBox OSE is distributed in the

; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.

;

; The contents of this file may alternatively be used under the terms

; of the Common Development and Distribution License Version 1.0

; (CDDL) only, as it comes in the "COPYING.CDDL" file of the

; VirtualBox OSE distribution, in which case the provisions of the

; CDDL are applicable instead of those of the GPL.

;

; You may elect to license modified versions of this file under the

; terms and conditions of either the GPL or the CDDL or both.

;

; Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa

; Clara, CA 95054 USA or visit http://www.sun.com if you need

; additional information or have any questions.

;

%include "iprt/asmdefs.mac"

BEGINCODE

;;

; @param psz1 gcc: rdi msc: rcx x86:[esp+4]

; @param psz2 gcc: rsi msc: rdx x86:[esp+8]

RT_NOCRT_BEGINPROC strcpy

; input

%ifdef RT_ARCH_AMD64

%ifdef ASM_CALL64_MSC

%define psz1 rcx

%define psz2 rdx

%else

%define psz1 rdi

%define psz2 rsi

%endif

mov r8, psz1

%else

mov ecx, [esp + 4]

mov edx, [esp + 8]

%define psz1 ecx

%define psz2 edx

push psz1

%endif

;

; The loop.

;

.next:

mov al, [psz1]

mov [psz2], al

test al, al

jz .done

mov al, [psz1 + 1]

mov [psz2 + 1], al

test al, al

jz .done

mov al, [psz1 + 2]

mov [psz2 + 2], al

test al, al

jz .done

mov al, [psz1 + 3]

mov [psz2 + 3], al

test al, al

jz .done

add psz1, 4

add psz2, 4

jmp .next

.done:

%ifdef RT_ARCH_AMD64

mov rax, r8

%else

pop eax

%endif

ret

ENDPROC RT_NOCRT(strcpy)