1 // Copyright (c) 2004-2009 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 "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // Implementation of the Class ElfProducer for the elf2e32 tool

    15 // @internalComponent

    16 // @released

    17 // 

    18 //

    19 

    20 #if !defined(_PL_ELFPRODUCER_H_)

    21 #define _PL_ELFPRODUCER_H_

    22 

    23 #include "pl_elfexecutable.h"

    24 #include <string>

    25 

    26 //enum for section index

    27 typedef enum _SECTION_INDEX_ {

    28 	DUMMY_SECTION=0,

    29 	CODE_SECTION,

    30 	DYNAMIC_SECTION,

    31 	HASH_TBL_SECTION,

    32 	VER_DEF_SECTION,

    33 	VERSION_SECTION,

    34 	STRING_SECTION,

    35 	SYMBOL_SECTION,

    36 	SH_STR_SECTION,

    37 	MAX_SECTIONS=SH_STR_SECTION

    38 }SECTION_INDEX;

    39 

    40 //enum for DYN entries

    41 typedef enum _DYN_ENTRIES_ {

    42 	DSO_DT_DSONAME=0,

    43 	DSO_DT_SYMTAB,

    44 	DSO_DT_SYMENT,

    45 	DSO_DT_STRTAB,

    46 	DSO_DT_STRSZ,

    47 	DSO_DT_VERSYM,

    48 	DSO_DT_VERDEF,

    49 	DSO_DT_VERDEFNUM,

    50 	DSO_DT_HASH,

    51 	DSO_DT_NULL,

    52 	MAX_DYN_ENTS=DSO_DT_NULL,

    53 }DYN_ENTRIES;

    54 

    55 #define DEFAULT_VERSION	2

    56 /**

    57 This class provides elf contents for the dso file creation. It generates the

    58 elf header, sections, dynamic array and the relocatrion entries.

    59 @internalComponent

    60 @released

    61 */

    62 class ElfProducer : public ElfExecutable

    63 {

    64 

    65 	typedef std::list<Symbol*> SymbolList;

    66 public:

    67 	ElfProducer(ParameterListInterface *aParameterListInterface);

    68 	~ElfProducer();

    69 	

    70 	void SetSymbolList(SymbolList& aSymbolList);

    71 	void WriteElfFile(char* aDsoFullName,char* aDsoFileName, char* aLinkAs);

    72 

    73 private:

    74 	/**

    75 	 * This list is passed from the UseCaseHandler via the DSOHandler to this class.

    76 	 * This is used to create the export info when only a def file is available and

    77 	 * the DSO needs to be generated for that.

    78 	 */

    79 	typedef std::string	String;

    80 	/** The proxy DSO file name*/

    81 	String			iDSOName;

    82 

    83 	/** The offset of the file name within the string table of the ELF file*/

    84 	PLUINT32		iDSONameOffset;

    85 

    86 	/** The DLL name that defines the export Symbols*/

    87 	String			iLinkAs;

    88 

    89 	/** The offset of the DLL name within the string table within the ELF file*/

    90 	PLUINT32		iLinkAsOffset;

    91 

    92 	/** The export Symbol list*/

    93 	SymbolList		*iSymbolsList;

    94 

    95 	/** The number of export Symbols*/

    96 	PLUINT32		iNSymbols;

    97 

    98 	/** The proxy DSO full file name*/

    99 	String			iDsoFullName;

   100 

   101 	/*DSO content Fields*/

   102 

   103 	/** The Elf version definition auxiliary section*/

   104 	Elf32_Verdaux	*iDSODaux;

   105 

   106 	/** The Buckets for the hash table*/

   107 	Elf32_Sword		*iDSOBuckets;

   108 

   109 	/** The chains pointed to by the buckets belonging to the hash table*/

   110 	Elf32_Sword		*iDSOChains;

   111 

   112 	/** The Elf Dynamic section table*/

   113 	Elf32_Dyn		iDSODynTbl[MAX_DYN_ENTS+1];

   114 

   115 	/** The code section*/

   116 	PLUINT32		*iCodeSectionData;

   117 

   118 	/** The Elf file offset maintained for writing the different sections of the Elf file*/

   119 	PLUINT32		iElfFileOffset;

   120 

   121 	/** The Elf String table*/

   122 	String			iDSOSymNameStrTbl;

   123 

   124 	/** The Elf Section-header String table*/

   125 	String			iDSOSectionNames;

   126 

   127 

   128 	void InitElfContents();

   129 	void Cleanup();

   130 	void SetSymolFields(Symbol *aSym, Elf32_Sym* aElfSym, PLUINT32 aIndex);

   131 	void AddToHashTable(const char* aSymName, PLUINT32 aIndex);

   132 	void CreateVersionTable();

   133 	void CreateElfHeader();

   134 	void CreateSections();

   135 	void SetSectionFields(PLUINT32 aSectionIndex, char* aSectionName, PLUINT32 aType, \

   136 								   PLUINT32 aEntSz, PLUINT32 aSectionSize, PLUINT32 aLink, \

   137 								   PLUINT32 aInfo, PLUINT32 aAddrAlign, PLUINT32 aFlags, \

   138 								   PLUINT32 aAddr);

   139 	void CreateDynamicEntries();

   140 	void CreateProgHeader();

   141 

   142 	void WriteElfContents();

   143 	void AlignString(String& aStr);

   144 

   145 };

   146 

   147 

   148 

   149 

   150 #endif // !defined(_PL_ELFPRODUCER_H_)