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1 // Copyright (c) 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 // Classes that allow the editing and creation of Symbian ELF files |
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15 // |
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16 |
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17 /** |
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18 * @file |
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19 * @publishedAll |
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20 * @prototype |
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21 */ |
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22 |
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23 #ifndef __SELF_LIB_H__ |
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24 #define __SELF_LIB_H__ |
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25 |
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26 #include <e32base.h> |
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27 #include <e32debug.h> |
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28 #include <f32file.h> |
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29 #include <elfdefs.h> |
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30 #include <badesca.h> |
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31 #include <symbianelfdefs.h> |
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32 |
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33 _LIT(KTempFileLocation, "C:\\"); //TODO: Investigate system drive |
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34 |
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35 /** Reads a struct from a file |
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36 * @param t Type to read |
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37 * @param s the structure |
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38 * @param f RFile to read from |
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39 * @param r Point in the file from which to read |
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40 * */ |
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41 #define READ_STRUCTL(t, s, f, r)\ |
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42 t s;\ |
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43 {\ |
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44 TPtr8 ptr((TUint8*)&s, sizeof(s), sizeof(s));\ |
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45 User::LeaveIfError(f.Read(r, ptr));\ |
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46 } |
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47 |
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48 /** |
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49 * This represents a Symbian Note segment in an ELF file |
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50 * It consits of a program header, descriptor header and |
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51 * the Note specific segment. |
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52 */ |
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53 struct TSELFSegment |
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54 { |
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55 Elf32_Phdr iPhdr; |
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56 Sym32_dhdr iDhdr; |
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57 |
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58 union TSegmentType |
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59 { |
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60 Sym32_variant_spec_data iVarData; |
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61 //Other section types can live here - currently only support variant specific data |
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62 }; |
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63 |
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64 TSegmentType iType; |
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65 }; |
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66 |
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67 class CStringInfoTableV2; |
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68 |
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69 /** |
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70 * This class is the interface to allow editing of SELF files |
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71 */ |
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72 class CSELFEditor : public CBase |
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73 { |
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74 public: |
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75 IMPORT_C static CSELFEditor* NewL(const TDesC& aFilename); |
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76 IMPORT_C static CSELFEditor* NewLC(const TDesC& aFilename); |
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77 |
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78 IMPORT_C void GetELFHeader(Elf32_Ehdr& aELFHeader); |
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79 IMPORT_C void InsertVariantSpecificDataL(const TDesC8& aVarData); |
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80 IMPORT_C void WriteELFUpdatesL(); |
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81 |
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82 virtual ~CSELFEditor(); |
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83 |
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84 private: |
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85 CSELFEditor(); |
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86 void ConstructL(const TDesC& aFilename); |
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87 TBool IsValidELFFile(); |
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88 TBool IsELFFileSupported(); |
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89 |
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90 TUint CopyFromELFFileL(TUint aStartPoint, TUint aSize, RFile aDestinationFile, TUint aDestWrite = 0); |
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91 TUint CopyRegistersL(RFile aFile, TUint aSrcRead, TUint aDestWrite, TUint& aSizeWritten); |
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92 TUint CopyVariantDataL(RFile aFile, TUint aSrcRead, TUint aDestWrite, TUint& aSizeWritten); |
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93 void PutEmptySpaceAtEndOfFileL(RFile aFile, TUint aSize); |
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94 |
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95 void CacheStringTableL(); |
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96 void CacheProgramHeadersL(); |
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97 void CacheELFHeaderL(); |
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98 |
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99 TUint WriteStringInfoL(RFile aFile, TUint& aOffset); |
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100 void SwapFilesL(const TDesC& aSrc, const TDesC& aDest); |
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101 |
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102 private: |
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103 RFs iFsSession; |
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104 RFile iELFFile; |
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105 RArray<TSELFSegment> iNewSegments; |
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106 RArray<Elf32_Phdr> iProgramHeaders; |
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107 |
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108 Elf32_Ehdr iELFHeader; |
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109 Sym32_dhdr iStringTableDhdr; |
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110 CStringInfoTableV2* iStringTable; |
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111 |
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112 //Flat array of descriptors for data to be inserted to ELF |
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113 CDesC8Array* iRawData; |
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114 |
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115 }; |
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116 |
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117 #endif |