Added Code
This commit is contained in:
William Welna
@@ -0,0 +1,22 @@
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# Auto detect text files and perform LF normalization
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* text=auto
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# Custom for Visual Studio
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*.cs diff=csharp
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*.sln merge=union
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*.csproj merge=union
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*.vbproj merge=union
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*.fsproj merge=union
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*.dbproj merge=union
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# Standard to msysgit
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*.doc diff=astextplain
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*.DOC diff=astextplain
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*.docx diff=astextplain
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*.DOCX diff=astextplain
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*.dot diff=astextplain
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*.DOT diff=astextplain
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*.pdf diff=astextplain
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*.PDF diff=astextplain
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*.rtf diff=astextplain
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*.RTF diff=astextplain
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+163
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#################
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## Eclipse
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#################
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*.pydevproject
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.project
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.metadata
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bin/
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tmp/
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*.tmp
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*.bak
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*.swp
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*~.nib
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local.properties
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.classpath
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.settings/
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.loadpath
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# External tool builders
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.externalToolBuilders/
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# Locally stored "Eclipse launch configurations"
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*.launch
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# CDT-specific
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.cproject
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# PDT-specific
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.buildpath
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#################
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## Visual Studio
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#################
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## Ignore Visual Studio temporary files, build results, and
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## files generated by popular Visual Studio add-ons.
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# User-specific files
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*.suo
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*.user
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*.sln.docstates
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# Build results
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[Dd]ebug/
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[Rr]elease/
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*_i.c
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*_p.c
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*.ilk
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*.meta
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*.obj
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*.pch
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*.pdb
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*.pgc
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*.pgd
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*.rsp
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*.sbr
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*.tlb
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*.tli
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*.tlh
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*.tmp
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*.vspscc
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.builds
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*.dotCover
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## TODO: If you have NuGet Package Restore enabled, uncomment this
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#packages/
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# Visual C++ cache files
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ipch/
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*.aps
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*.ncb
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*.opensdf
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*.sdf
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# Visual Studio profiler
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*.psess
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*.vsp
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# ReSharper is a .NET coding add-in
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_ReSharper*
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# Installshield output folder
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[Ee]xpress
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# DocProject is a documentation generator add-in
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DocProject/buildhelp/
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DocProject/Help/*.HxT
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DocProject/Help/*.HxC
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DocProject/Help/*.hhc
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DocProject/Help/*.hhk
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DocProject/Help/*.hhp
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DocProject/Help/Html2
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DocProject/Help/html
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# Click-Once directory
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publish
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# Others
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[Bb]in
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[Oo]bj
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sql
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TestResults
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*.Cache
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ClientBin
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stylecop.*
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~$*
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*.dbmdl
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Generated_Code #added for RIA/Silverlight projects
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# Backup & report files from converting an old project file to a newer
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# Visual Studio version. Backup files are not needed, because we have git ;-)
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_UpgradeReport_Files/
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Backup*/
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UpgradeLog*.XML
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############
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## Windows
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############
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# Windows image file caches
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Thumbs.db
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# Folder config file
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Desktop.ini
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#############
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## Python
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#############
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*.py[co]
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# Packages
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*.egg
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*.egg-info
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dist
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build
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eggs
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parts
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bin
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var
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sdist
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develop-eggs
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.installed.cfg
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# Installer logs
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pip-log.txt
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# Unit test / coverage reports
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.coverage
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.tox
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#Translations
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*.mo
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#Mr Developer
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.mr.developer.cfg
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# Mac crap
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.DS_Store
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+243
@@ -0,0 +1,243 @@
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; Simple String Functions in Assembly
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;
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; Copyright (C) 2012, William H. Welna All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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; ; Redistributions of source code must retain the above copyright
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; notice, this list of conditions and the following disclaimer.
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; ; Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in the
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; documentation and/or other materials provided with the distribution.
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;
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; THIS SOFTWARE IS PROVIDED BY William H. Welna ''AS IS'' AND ANY
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; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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; DISCLAIMED. IN NO EVENT SHALL William H. Welna BE LIABLE FOR ANY
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; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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section .txt
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; global declarations
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global myxor
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global myxorr
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global myinv
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global mycpy
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global myset
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global myzero
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global mycmp
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global mylen
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global mycat
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global find
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myinv: ; void __cdecl myinv(void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov esi, [ebp+8] ; buff
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mov edi, esi; ; dest is src
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mov ecx, [ebp+12] ; len
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mov ah, 0xFF ; invert
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.loop:
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lodsb
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xor al, ah
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stosb
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loop .loop
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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myxor: ; void __cdecl myxor(void *, unsigned int, char);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov esi, [ebp+8] ; buff
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mov edi, esi; ; dest is src
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mov ecx, [ebp+12] ; len
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mov ah, [ebp+16] ; char to xor
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.loop:
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lodsb
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xor al, ah
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stosb
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loop .loop
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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myxorr: ; void __cdecl myxorr(char, void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov ah, [ebp+8] ; char to xor
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mov esi, [ebp+12] ; buff
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mov edi, esi; ; dest is src
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mov ecx, [ebp+16] ; len
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.loop:
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lodsb
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xor al, ah
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stosb
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loop .loop
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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mycpy: ; void __cdecl *mycpy(void *, void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov edi, [ebp+8] ; dest
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mov esi, [ebp+12] ; src
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mov ecx, [ebp+16] ; size
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cld
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rep movsb
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mov eax, [ebp+8]
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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myset: ; void __cdecl *myset(void *, char, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov edi, [ebp+8] ; dest
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mov al, [ebp+12] ; char
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mov ecx, [ebp+16] ; size
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cld
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rep stosb
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mov eax, [ebp+8] ; return dest
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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myzero: ; void __cdecl *myzero(void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov edi, [ebp+8] ; dest
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mov ecx, [ebp+12] ; size
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xor al, al ; zero!
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cld
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rep stosb
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mov eax, [ebp+8] ; return dest
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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mycmp: ; int __cdecl mycmp(void *, void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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xor eax, eax
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mov esi, [ebp+8] ; string 1
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mov edi, [ebp+12] ; string 2
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mov ecx, [ebp+16] ; size
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cld
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repe cmpsb
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jne .ne
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inc eax
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.ne:
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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mylen: ; int __cdecl mylen(void *);
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push ebp
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mov ebp, esp
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push edi
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push esi
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xor eax, eax ; \0 byte
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mov edi, [ebp+8] ; string
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mov ecx, 0xFFFFFFFF
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cld
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repne scasb
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mov eax, [ebp+8]
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xchg eax, edi
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sub eax, edi
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dec eax ; don't count the \0 byte
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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mycat: ; void __cdecl mycat(void *, void *, unsigned int)
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov eax, [ebp+8]
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push eax
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call mylen
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add esp, 4
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add eax, [ebp+8] ; string 1 + mylen(string 1)
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mov ecx, [ebp+12] ; string 2
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mov edx, [ebp+16] ; len
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push edx
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push ecx
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push eax
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call mycpy
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add esp, 12
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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find: ; void __cdecl myfind(void *, unsigned int, void *, unsigned int);
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push ebp
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mov ebp, esp
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push edi
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push esi
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mov ecx, [ebp+12] ; size of haystack
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mov eax, [ebp+20] ; size of needle
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cmp eax, ecx
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jg .donejg ; if needle is larger than heystack return
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sub ecx, eax ; subtract haystack size from needle
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xor eax, eax
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.for:
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push eax
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push ecx
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mov eax, [ebp+20] ; needle size
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mov ecx, [ebp+16] ; needle
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mov edx, [ebp+8] ; haystack
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push eax
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push ecx
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push edx
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call mycmp
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add esp, 12
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cmp eax, 1
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jne .nada
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mov eax, [ebp+8] ; haystack
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;add eax, [ebp+20] ; haystack + needle size
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jmp .done
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.nada:
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inc dword [ebp+8] ; inc haystack pointer
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pop ecx
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pop eax
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inc eax
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cmp eax, ecx
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jne .for
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.donejg: ; special jump to make sure eax returns null
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xor eax, eax ; return null
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.done:
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pop esi
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pop edi
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mov esp, ebp
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pop ebp
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ret
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+39
@@ -0,0 +1,39 @@
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/*
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* Copyright (C) 2012, William H. Welna All rights reserved.
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||||
*
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||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY William H. Welna ''AS IS'' AND ANY
|
||||
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL William H. Welna BE LIABLE FOR ANY
|
||||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
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#ifndef __ASM__STUFF__
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#define __ASM__STUFF__
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void __cdecl *mycpy(void *, void *, unsigned int);
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void __cdecl *myset(void *, char, unsigned int);
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void __cdecl *myzero(void *, unsigned int);
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int __cdecl mycmp(void *, void *, unsigned int);
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int __cdecl mylen(void *);
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void __cdecl mycat(void *, void *, unsigned int);
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void __cdecl *find(void *, unsigned int, void *, unsigned int);
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void __cdecl myxor(void *, unsigned int, char);
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void __cdecl myxorr(char, void *, unsigned int);
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void __cdecl myinv(void *, unsigned int);
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#define myfind(a, b, c, d) find(a, b, c, d)
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#endif
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Reference in New Issue
Block a user