897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; $Id$

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;; @file

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; IPRT - No-CRT strncpy - AMD64 & X86.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; Copyright (C) 2006-2012 Oracle Corporation

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; This file is part of VirtualBox Open Source Edition (OSE), as

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; available from http://www.virtualbox.org. This file is free software;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; you can redistribute it and/or modify it under the terms of the GNU

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; General Public License (GPL) as published by the Free Software

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; Foundation, in version 2 as it comes in the "COPYING" file of the

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; VirtualBox OSE distribution. VirtualBox OSE is distributed in the

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; The contents of this file may alternatively be used under the terms

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; of the Common Development and Distribution License Version 1.0

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; (CDDL) only, as it comes in the "COPYING.CDDL" file of the

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; VirtualBox OSE distribution, in which case the provisions of the

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; CDDL are applicable instead of those of the GPL.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; You may elect to license modified versions of this file under the

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; terms and conditions of either the GPL or the CDDL or both.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%include "iprt/asmdefs.mac"

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsyncBEGINCODE

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync;;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; @param pszDst gcc: rdi msc: rcx x86:[esp+4]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; @param pszSrc gcc: rsi msc: rdx x86:[esp+8]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync; @param cbMax gcc: rdx msc: r8 x86:[esp+12]

f6e126865bd68a5743fbb9e620a77db2a1b1b861vboxsyncRT_NOCRT_BEGINPROC strncpy

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ; input

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%ifdef RT_ARCH_AMD64

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %ifdef ASM_CALL64_MSC

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszDst rcx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszSrc rdx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define cbMax r8

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %else

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszDst rdi

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszSrc rsi

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define cbMax rdx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %endif

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov r9, pszDst

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%else

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov ecx, [esp + 4]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov edx, [esp + 8]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync push ebx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov ebx, [esp + 12 + 4]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszDst ecx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define pszSrc edx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync %define cbMax ebx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync push pszDst

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%endif

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ; The rolled out loop.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync.next:

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync cmp cbMax, 4

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jb .simple_intro

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov al, [pszSrc]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov [pszDst], al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test al, al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov al, [pszSrc + 1]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov [pszDst + 1], al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test al, al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov al, [pszSrc + 2]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov [pszDst + 2], al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test al, al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov al, [pszSrc + 3]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov [pszDst + 3], al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test al, al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync add pszDst, 4

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync add pszSrc, 4

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync sub cbMax, 4

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jmp .next

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ; Char by char.

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ;

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync.simple_intro:

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test cbMax, cbMax

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync.simple_next:

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov al, [pszSrc]

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov [pszDst], al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync test al, al

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync dec cbMax

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jz .done

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync inc pszSrc

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync inc pszDst

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync jmp .simple_next

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync.done:

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%ifdef RT_ARCH_AMD64

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync mov rax, r9

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%else

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync pop ebx

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync pop eax

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync%endif

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync ret

f6e126865bd68a5743fbb9e620a77db2a1b1b861vboxsyncENDPROC RT_NOCRT(strncpy)

897afdda769ec9fd3dbe35b57a3a041cfde0d6a7vboxsync