author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 07 Jan 2010 13:38:45 +0200 | |
changeset 10 | 36bfc973b146 |
parent 9 | 96e5fb8b040d |
child 43 | c1f20ce4abcf |
permissions | -rw-r--r-- |
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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// e32\euser\epoc\win32\uc_utl.cpp |
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// |
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// |
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#include "u32std.h" |
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#include <e32base.h> |
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#include <e32base_private.h> |
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#include <e32hashtab.h> |
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#include <emulator.h> |
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#include "uc_std.h" |
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typedef void (*TBootEpoc)(TBool); |
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#ifdef __LEAVE_EQUALS_THROW__ |
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// Stub versions of TTrap exports to keep X86 and WINS versions of euser.def |
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// the same. |
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class TTrap |
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{ |
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public: |
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IMPORT_C TInt Trap(TInt& aResult); |
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IMPORT_C static void UnTrap(); |
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}; |
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EXPORT_C TInt TTrap::Trap(TInt&) |
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{ |
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return 0; |
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} |
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EXPORT_C void TTrap::UnTrap() |
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{ |
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} |
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#endif |
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EXPORT_C void EmptyFunction() |
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//Function with an empty body |
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{ |
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} |
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GLDEF_C void Panic(TCdtArchitecturePanic aPanic) |
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// |
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// Panic the process with USER as the category. |
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// |
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{ |
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_LIT(KCategory,"USER-Arch"); |
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User::Panic(KCategory,aPanic); |
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} |
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EXPORT_C TInt User::IsRomAddress(TBool& aBool, TAny* aPtr) |
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// |
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// The FileServer loads ROM files as ReadOnly Memory Mapped Files |
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// We check the access rights of the given address for : |
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// Read access |
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// No write access |
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// |
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/** |
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Tests whether the specified address is in the ROM. |
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@param aBool True, if the address at aPtr is within the ROM; false, |
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otherwise. |
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@param aPtr The address to be tested. |
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@return Always KErrNone. |
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*/ |
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{ |
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const TInt KRomMask = 0xFF; |
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const TInt KRomAccess = PAGE_READONLY; |
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aBool=EFalse; |
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MEMORY_BASIC_INFORMATION mi; |
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__LOCK_HOST; |
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if (VirtualQuery(aPtr, &mi, sizeof(mi)) != 0 && (mi.Protect & KRomMask) == KRomAccess) |
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aBool=ETrue; |
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return KErrNone; |
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} |
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EXPORT_C void BootEpoc(TBool aAutoRun) |
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{ |
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HINSTANCE epoc = LoadLibraryA("ekern.exe"); |
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if (epoc) |
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{ |
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TBootEpoc ep = (TBootEpoc)GetProcAddress(epoc, "_E32Startup"); |
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105 |
if (ep) |
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ep(aAutoRun); |
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} |
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ExitProcess(102); |
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} |
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|
110 |
|
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EXPORT_C void RFastLock::Wait() |
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112 |
{ |
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if (InterlockedDecrement((LPLONG)&iCount) < -1) |
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RSemaphore::Wait(); |
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} |
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116 |
|
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EXPORT_C void RFastLock::Signal() |
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118 |
{ |
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if (InterlockedIncrement((LPLONG)&iCount) < 0) |
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RSemaphore::Signal(); |
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} |
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122 |
|
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// Hash an 8 bit string at aPtr, length aLen bytes. |
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__NAKED__ TUint32 DefaultStringHash(const TUint8* /*aPtr*/, TInt /*aLen*/) |
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125 |
{ |
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_asm push esi |
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_asm mov esi, [esp+8] |
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_asm mov ecx, [esp+12] |
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_asm xor eax, eax |
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_asm sub ecx, 4 |
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_asm jb lt4 |
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132 |
ge4: |
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_asm xor eax, [esi] |
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_asm add esi, 4 |
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_asm mov edx, 9E3779B9h |
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_asm mul edx |
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_asm sub ecx, 4 |
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_asm jae ge4 |
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139 |
lt4: |
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_asm add ecx, 4 |
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_asm jz done |
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_asm xor edx, edx |
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_asm cmp ecx, 2 |
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_asm jbe le2 |
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_asm mov dl, [esi+2] |
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_asm shl edx, 16 |
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le2: |
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_asm cmp ecx, 2 |
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_asm jb onemore |
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_asm mov dh, [esi+1] |
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onemore: |
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_asm mov dl, [esi] |
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_asm xor eax, edx |
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_asm mov edx, 9E3779B9h |
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155 |
_asm mul edx |
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156 |
done: |
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157 |
_asm pop esi |
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158 |
_asm ret |
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159 |
} |
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|
160 |
|
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// Hash a 16 bit string at aPtr, length aLen bytes. |
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162 |
__NAKED__ TUint32 DefaultWStringHash(const TUint16* /*aPtr*/, TInt /*aLen*/) |
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163 |
{ |
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164 |
_asm push esi |
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165 |
_asm mov esi, [esp+8] |
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166 |
_asm mov ecx, [esp+12] |
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167 |
_asm xor eax, eax |
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168 |
_asm sub ecx, 8 |
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169 |
_asm jb lt8 |
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170 |
ge8: |
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171 |
_asm mov edx, [esi+4] |
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_asm xor eax, [esi] |
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173 |
_asm add esi, 8 |
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174 |
_asm rol edx, 8 |
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175 |
_asm xor eax, edx |
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176 |
_asm mov edx, 9E3779B9h |
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177 |
_asm mul edx |
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178 |
_asm sub ecx, 8 |
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_asm jae ge8 |
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180 |
lt8: |
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181 |
_asm add ecx, 8 |
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182 |
_asm jz done |
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183 |
_asm xor edx, edx |
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184 |
_asm cmp ecx, 4 |
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185 |
_asm jbe le4 |
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186 |
_asm mov dx, [esi+4] |
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187 |
_asm rol edx, 8 |
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|
188 |
_asm xor eax, edx |
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|
189 |
_asm xor edx, edx |
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|
190 |
le4: |
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|
191 |
_asm cmp ecx, 4 |
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192 |
_asm jb onemore |
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193 |
_asm mov dx, [esi+2] |
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194 |
_asm shl edx, 16 |
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|
195 |
onemore: |
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|
196 |
_asm mov dx, [esi] |
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197 |
_asm xor eax, edx |
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|
198 |
_asm mov edx, 9E3779B9h |
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199 |
_asm mul edx |
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|
200 |
done: |
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|
201 |
_asm pop esi |
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|
202 |
_asm ret |
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203 |
} |
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|
204 |
|
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|
205 |
/** |
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|
206 |
@publishedAll |
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|
207 |
@released |
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|
208 |
|
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|
209 |
Calculate a 32 bit hash from a 32 bit integer. |
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|
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@param aInt The integer to be hashed. |
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@return The calculated 32 bit hash value. |
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*/ |
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EXPORT_C __NAKED__ TUint32 DefaultHash::Integer(const TInt& /*aInt*/) |
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{ |
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_asm mov edx, [esp+4] |
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_asm mov eax, 9E3779B9h |
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_asm mul dword ptr [edx] |
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_asm ret |
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} |
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