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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "ARM EABI LICENCE.txt" |
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5 // which accompanies this distribution, and is available |
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6 // in kernel/eka/compsupp. |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <e32std.h> |
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17 #include <e32std_private.h> |
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18 |
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19 // support functions for ARM supplied softvfp compiler-helper functions |
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20 |
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21 extern "C" { |
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22 |
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23 //void __rt_fp_status_register_cleanup(TAny * aReg) |
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24 // { |
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25 // delete aReg; |
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26 // } |
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27 |
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28 // set up the fp status register |
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29 EXPORT_C void _fp_init(void) |
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30 { |
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31 TUint32 * aReg = (TUint32 *)User::AllocZ(sizeof(TUint32)); |
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32 if (aReg) |
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33 { |
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34 Dll::SetTls(aReg /*, __rt_fp_status_register_cleanup*/); |
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35 } |
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36 else |
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37 { |
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38 // This will force us to try again if we actually get an FP |
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39 // exception later. |
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40 Dll::SetTls(0 /*, __rt_fp_status_register_cleanup*/); |
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41 } |
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42 } |
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43 |
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44 EXPORT_C TAny * __rt_fp_status_addr(void) |
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45 { |
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46 //return &__fp_status_register; |
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47 TAny* aTls = Dll::Tls(); |
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48 if (aTls) |
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49 return aTls; |
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50 // we obviously failed to set it up before. Try again, so we can |
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51 // at least try to error meaningfully |
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52 TUint32* aReg = (TUint32*)User::AllocZ(sizeof(TUint32)); |
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53 _LIT(KFpGeneralPanic, "FP Emulator"); |
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54 if (aReg) |
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55 { |
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56 TInt r = Dll::SetTls(aReg /*, __rt_fp_status_register_cleanup*/); |
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57 if (r==KErrNone) |
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58 return aReg; |
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59 // if we get here we really in trouble. Just Panic. |
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60 User::Panic(KFpGeneralPanic, KErrGeneral); |
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61 } |
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62 else |
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63 { |
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64 // If we get here, we're toast anyway.... |
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65 User::Panic(KFpGeneralPanic, KErrNoMemory); |
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66 } |
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67 return 0; |
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68 } |
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69 } |
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70 |