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1 // Copyright (c) 2004-2009 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 "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 // |
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15 |
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16 #include "e32exporttable.h" |
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17 #include "pl_elfexecutable.h" |
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18 #include "pl_elfexports.h" |
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19 #include "pl_dllsymbol.h" |
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20 #include "pl_elflocalrelocation.h" |
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21 |
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22 /** |
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23 Destructor for E32ExportTable class. |
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24 @internalComponent |
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25 @released |
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26 */ |
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27 E32ExportTable::~E32ExportTable() |
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28 { |
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29 delete [] iTable; |
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30 } |
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31 |
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32 /** |
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33 This function updates the e32 export table. |
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34 @param aElfExecutable - Elf executable |
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35 @param aExportList - export symbol list |
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36 @internalComponent |
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37 @released |
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38 */ |
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39 void E32ExportTable::CreateExportTable(ElfExecutable * aElfExecutable, ElfExports::ExportList & aExportList) |
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40 { |
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41 iElfExecutable = aElfExecutable; |
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42 // ELFExports::ExportList aExportList = aElfExecutable->GetExportsInOrdinalOrder(); |
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43 // The export table has a header containing the number of entries |
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44 // before the entries themselves. So add 1 to number of exports |
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45 iNumExports = aExportList.size(); |
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46 size_t aSize = iNumExports + 1; |
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47 iSize = aSize * sizeof(MemAddr); |
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48 iTable = new unsigned int[aSize]; |
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49 // Set up header |
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50 iTable[0] = aExportList.size(); |
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51 Elf32_Phdr * aROHdr = aElfExecutable->iCodeSegmentHdr; |
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52 // The export table starts after the header. NB this is a virtual address in the RO |
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53 // segment of the E32Image. It is outside the ELF RO segment. |
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54 Elf32_Addr * aPlace = ELF_ENTRY_PTR(Elf32_Addr, aROHdr->p_vaddr, aROHdr->p_filesz) + 1; |
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55 iExportTableAddress = (Elf32_Addr)aPlace; |
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56 // Tell the E32Image constructor that it must allocate the export table |
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57 // i.e. copy it from iTable. |
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58 iAllocateP = true; |
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59 bool aDelSym; |
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60 ElfExports::ExportList::iterator first = aExportList.begin(); |
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61 for (PLUINT32 i = 1; i < aSize; i++, first++) |
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62 { |
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63 Elf32_Sym * sym; |
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64 |
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65 unsigned int ptr; |
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66 if ((*first)->Absent()) |
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67 { |
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68 ptr = aElfExecutable->iEntryPoint; |
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69 sym = new Elf32_Sym; |
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70 memset(sym, 0, sizeof(Elf32_Sym)); |
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71 sym->st_value = ptr; |
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72 aDelSym = true; |
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73 } |
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74 else |
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75 { |
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76 ptr = (*first)->iElfSym->st_value; |
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77 sym = (*first)->iElfSym; |
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78 aDelSym = false; |
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79 } |
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80 // set up the pointer |
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81 iTable[i] = ptr; |
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82 ElfLocalRelocation * aRel = new ElfLocalRelocation(iElfExecutable, (Elf32_Addr)aPlace++, 0, i, R_ARM_ABS32, NULL, ESegmentRO, sym, aDelSym); |
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83 aRel->Add(); |
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84 |
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85 } |
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86 } |
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87 |
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88 /** |
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89 This function returns the number of exports. |
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90 @internalComponent |
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91 @released |
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92 */ |
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93 size_t E32ExportTable::GetNumExports() |
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94 { |
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95 return iNumExports; |
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96 } |
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97 |
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98 /** |
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99 This function tells the e32 image allocator if space is required to |
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100 be allocated for export table. |
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101 @internalComponent |
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102 @released |
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103 */ |
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104 bool E32ExportTable::AllocateP(){ |
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105 return iAllocateP; |
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106 } |
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107 |
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108 /** |
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109 This function returns the e32 export table size. |
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110 @internalComponent |
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111 @released |
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112 */ |
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113 size_t E32ExportTable::GetExportTableSize(){ |
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114 return iSize; |
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115 } |
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116 |
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117 /** |
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118 This function returns e32 export table. |
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119 @internalComponent |
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120 @released |
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121 */ |
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122 unsigned int * E32ExportTable::GetExportTable() { |
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123 return iTable; |
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124 } |
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125 |