1 // Copyright (c) 2002-2009 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\misc\exc.cpp

    15 // Utility generating various kinds of exceptions.  Useful to test

    16 // debuggers.

    17 // 

    18 //

    19 

    20 #include <e32std.h>

    21 #include <e32std_private.h>

    22 

    23 void InfiniteRecursion()

    24 	{

    25 	InfiniteRecursion();

    26 	}

    27 

    28 #ifdef __ARMCC__

    29 #pragma Ono_inline // prevent compile time errors

    30 #endif

    31 void Store42(TInt*& p)

    32 	{

    33 	*p = 42;

    34 	}

    35 

    36 void Foo()

    37 	{

    38 	// uninitialised pointer on stack - may not crash

    39 	TInt* p;

    40 	Store42(p);

    41 	}

    42 void Foo1(TUint8 *ps)

    43         {	

    44 	TInt32* p = (TInt32*)ps;

    45 	*p = 0x42;

    46 	}

    47 void Foo2(TUint8 *ps)

    48         {	

    49 	TInt16* p = (TInt16*)ps;

    50 	*p = 0x42;

    51 	}

    52 

    53 TInt E32Main()

    54 	{

    55 	TBuf<32> cmd;

    56 	User::CommandLine(cmd);

    57 	TLex lex(cmd);

    58 	TInt n=0;

    59 	lex.Val(n);

    60 

    61 	typedef void (*TPfn)();

    62 

    63 	switch (n)

    64 		{

    65 	default:

    66 	case 0:

    67 		{

    68 		// data abort - accessing non-existent memory

    69 		TInt* p = (TInt*) 0x1000;

    70 		*p = 0x42;

    71 		}

    72 		break;

    73 	case 1:

    74 		// data abort - stack overflow

    75 		InfiniteRecursion();

    76 		break;

    77 	case 2:

    78 		{

    79 		// data abort - pointer in deleted heap cell

    80 		// May not crash on UREL builds

    81 		struct S { TInt* iPtr; };

    82 		S* p = new S;

    83 		p->iPtr = new TInt;

    84 		delete p->iPtr;

    85 		delete p;

    86 		*(p->iPtr) = 42;

    87 		}

    88 		break;

    89 	case 3:

    90 		// data abort - uninitialised pointer on stack

    91 		Foo();

    92 		break;

    93 	case 4:

    94 		{

    95 		// data abort - misaligned access to 32 bit word

    96 		TUint8 buffer[16];

    97 		Foo1(buffer+2);

    98 		}

    99 		break;

   100 	case 5:

   101 		{

   102 		// data abort - misaligned access to 16 bit word

   103 		TUint8 buffer[16];

   104 		Foo2 (buffer+1);

   105  		}

   106 		break;

   107 	case 6:

   108 		{

   109 		// prefetch abort

   110 		TPfn f = NULL;

   111 		f();

   112 		}

   113 		break;

   114 	case 7:

   115 		{

   116 		// undefined instruction

   117 		TUint32 undef = 0xE6000010;

   118 		TPfn f = (TPfn) &undef;

   119 		f();

   120 		}

   121 		break;

   122 		}

   123 

   124 	return 0;

   125 	}