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os/kernelhwsrv/kerneltest/e32test/debug/t_codemodifier.cia
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // e32test\debug\t_codemodifier.cia

    15 // See e32test\debug\t_codemodifier.cpp for details

    16 // 

    17 //

    18 

    19 #include <u32std.h>

    20 

    21 #ifdef __CPU_ARM

    22 const TUint32 KArmBreakPoint = 0xE7F123F4;

    23 

    24 

    25 #define BRK_4()	\

    26 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \

    27 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \

    28 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \

    29 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \

    30 

    31 #define BRK_16()	\

    32 	BRK_4()	\

    33 	BRK_4()	\

    34 	BRK_4()	\

    35 	BRK_4()	\

    36 

    37 #define BRK_64()	\

    38 	BRK_16()	\

    39 	BRK_16()	\

    40 	BRK_16()	\

    41 	BRK_16()	\

    42 

    43 #define BRK_256()	\

    44 	BRK_64()	\

    45 	BRK_64()	\

    46 	BRK_64()	\

    47 	BRK_64()	\

    48 

    49 #define BRK_1024()	\

    50 	BRK_256()	\

    51 	BRK_256()	\

    52 	BRK_256()	\

    53 	BRK_256()	\

    54 

    55 __NAKED__ void CodeArea()

    56 	{

    57 	//These 1025 breakpoints will go accross page boundaries.

    58 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \

    59 	BRK_1024();

    60 	__JUMP(,lr);

    61 	}

    62 

    63 /**

    64 The function will run in the server and is coded to cause panic.

    65 However, it will be altered remotely by the client before it runs.

    66 */

    67 __NAKED__ void TestFunc()

    68 	{

    69 	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); //This would panic but it will be replaced by NOP

    70 	asm("nop");

    71 	__JUMP(,lr);

    72 	}

    73 #endif
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