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 "ARM EABI LICENCE.txt"

     5 // which accompanies this distribution, and is available

     6 // in kernel/eka/compsupp.

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include <e32std.h>

    17 #include <e32std_private.h>

    18 

    19 // support functions for ARM supplied softvfp compiler-helper functions

    20 

    21 extern "C" {

    22 

    23 //void __rt_fp_status_register_cleanup(TAny * aReg)

    24 //	{

    25 //	delete aReg;

    26 //	}

    27 

    28 // set up the fp status register 

    29 EXPORT_C  void _fp_init(void) 

    30 	{

    31 	TUint32 * aReg = (TUint32 *)User::AllocZ(sizeof(TUint32));

    32 	if (aReg) 

    33 		{

    34 		Dll::SetTls(aReg /*, __rt_fp_status_register_cleanup*/);

    35 		}

    36 	else

    37 		{

    38 		// This will force us to try again if we actually get an FP 

    39 		// exception later.

    40 		Dll::SetTls(0 /*, __rt_fp_status_register_cleanup*/);

    41 		}

    42 	}

    43   

    44 EXPORT_C TAny * __rt_fp_status_addr(void) 

    45 	{ 

    46 	//return &__fp_status_register; 

    47 	TAny* aTls = Dll::Tls();

    48 	if (aTls)

    49 		return aTls;

    50 	// we obviously failed to set it up before. Try again, so we can

    51 	// at least try to error meaningfully

    52 	TUint32* aReg = (TUint32*)User::AllocZ(sizeof(TUint32));

    53 	_LIT(KFpGeneralPanic, "FP Emulator");

    54 	if (aReg) 

    55 		{

    56 		TInt r = Dll::SetTls(aReg /*, __rt_fp_status_register_cleanup*/);

    57 		if (r==KErrNone)

    58 			return aReg;

    59 		// if we get here we really in trouble. Just Panic.

    60 		User::Panic(KFpGeneralPanic, KErrGeneral);

    61 		}

    62 	else

    63 		{

    64 		// If we get here, we're toast anyway....

    65 		User::Panic(KFpGeneralPanic, KErrNoMemory);

    66 		}

    67 	return 0;

    68 	}

    69 }

    70