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1 // Copyright (c) 2007-2009 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 "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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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 // e32\euser\epoc\x86\uc_exe.cia |
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15 // |
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16 // |
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17 |
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18 #include <u32std.h> |
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19 #include "x86hlp.inl" |
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20 |
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21 static const TLinAddr User_HandleException = (TLinAddr)&User::HandleException; |
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22 static const TLinAddr User_Invariant = (TLinAddr)&User::Invariant; |
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23 |
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24 extern "C" { |
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25 void __fastcall RunThread(TBool aNotFirst, SThreadCreateInfo& aInfo); |
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26 |
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27 // NOTE: This MUST be the first function in this module |
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28 __NAKED__ TInt _E32Startup() |
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29 { |
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30 // Process entry point |
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31 // EBX = entry reason |
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32 // ESP points to information block |
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33 BYTE(0xeb) // JMP .+16 |
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34 BYTE(0x0e) |
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35 BYTE(0x00) |
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36 BYTE(0x00) |
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37 BYTE(0x00) |
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38 BYTE(0x00) |
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39 BYTE(0x00) |
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40 BYTE(0x00) |
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41 BYTE(0x00) |
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42 BYTE(0x00) |
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43 BYTE(0x00) |
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44 BYTE(0x00) |
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45 BYTE(0x00) // need zero word at offset 12 from entry point |
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46 BYTE(0x00) |
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47 BYTE(0x00) |
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48 BYTE(0x00) |
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49 |
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50 asm("cmp ebx, 2"); |
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51 asm("jae not_thread_entry"); |
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52 asm("mov ecx, ebx"); |
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53 asm("mov edx, esp"); |
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54 asm("jmp %a0": :"i"(&RunThread)); |
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55 |
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56 asm("not_thread_entry:"); |
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57 asm("cmp ebx, 4"); |
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58 asm("jne invalid_entry"); |
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59 asm("mov eax, esp"); |
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60 asm("push eax"); |
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61 asm("mov eax, %0": : "i"(User_HandleException)); |
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62 asm("call eax"); |
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63 asm("pop eax"); // parameter |
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64 asm("pop eax"); // exc type |
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65 asm("pop eax"); // exc id |
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66 asm("pop eax"); // exc error code |
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67 asm("pop eax"); // fault address |
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68 asm("pop eax"); |
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69 asm("pop ecx"); |
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70 asm("pop edx"); |
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71 asm("pop ebx"); |
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72 asm("pop esi"); // ESP - ignore |
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73 asm("pop ebp"); |
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74 asm("pop esi"); |
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75 asm("pop edi"); |
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76 asm("add esp, 4"); // SS - ignore |
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77 asm("pop ds"); |
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78 asm("pop es"); |
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79 asm("pop fs"); |
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80 asm("pop gs"); |
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81 asm("popfd"); |
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82 BYTE(0xcb) //asm("retf"); GCC doesn't recognise retf |
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83 |
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84 asm("invalid_entry:"); |
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85 asm("call %a0": : "i"(User_Invariant)); |
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86 } |
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87 |
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88 } |
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89 |
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90 |