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https://github.com/reactos/reactos.git
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167 lines
2.1 KiB
C++
167 lines
2.1 KiB
C++
////////////////////////////////////////////////////////////////////
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// Copyright (C) Alexander Telyatnikov, Ivan Keliukh, Yegor Anchishkin, SKIF Software, 1999-2013. Kiev, Ukraine
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// All rights reserved
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// This file was released under the GPLv2 on June 2015.
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////////////////////////////////////////////////////////////////////
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/*
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Module Name:
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tools.cpp
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Abstract:
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This module contains some useful functions for data manipulation.
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Environment:
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*/
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///////////////////////////////////////////////////////////////////////////////
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#ifdef __cplusplus
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extern "C" {
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#endif
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//----------------
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#include "tools.h"
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//----------------
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#ifdef _X86_
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__declspec (naked)
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void
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__fastcall
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_MOV_DD_SWP(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov eax,[edx]
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bswap eax
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mov [ecx],eax
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_MOV_DW_SWP(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov ax,[edx]
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rol ax,8
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mov [ecx],ax
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_REVERSE_DD(
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void* a // ECX
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)
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{
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_asm {
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mov eax,[ecx]
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bswap eax
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mov [ecx],eax
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_REVERSE_DW(
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void* a // ECX
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)
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{
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_asm {
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mov ax,[ecx]
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rol ax,8
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mov [ecx],ax
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_MOV_DW2DD_SWP(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov ax,[edx]
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rol ax,8
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mov [ecx+2],ax
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mov [ecx],0
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_MOV_MSF(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov eax,[edx]
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mov [ecx],ax
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shr eax,16
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mov [ecx+2],al
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_MOV_MSF_SWP(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov eax,[edx]
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mov [ecx+2],al
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bswap eax
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shr eax,8
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mov [ecx],ax
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ret
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}
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}
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__declspec (naked)
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void
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__fastcall
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_XCHG_DD(
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void* a, // ECX
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void* b // EDX
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)
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{
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_asm {
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mov eax,[edx]
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xchg eax,[ecx]
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mov [edx],eax
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ret
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}
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}
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#endif _X86_
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#ifdef __cplusplus
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};
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#endif
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