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/**************************** library.h ********************************
* Author: Agner Fog
* Date created: 2006-07-15
* Last modified: 2013-08-22
* Project: objconv
* Module: library.h
* Description:
* Header file defining classes for reading and writing UNIX and OMF style
* libraries.
*
* Copyright 2007-2013 GNU General Public License http://www.gnu.org/licenses
*****************************************************************************/
#ifndef LIBRARY_H
#define LIBRARY_H
// Make big-endian numbers for library
uint32_t EndianChange(uint32_t); // Convert little-endian to big-endian number, or vice versa
// Define UNIX library member header
struct SUNIXLibraryHeader {
char Name[16]; // Member name
char Date[12]; // Member date, seconds, decimal ASCII
char UserID[6]; // Member User ID, decimal ASCII
char GroupID[6]; // Member Group ID, decimal ASCII
char FileMode[8]; // Member file mode, octal
char FileSize[10]; // Member file size, decimal ASCII
char HeaderEnd[2]; // "`\n"
};
// Class for extracting members from library or building a library
class CLibrary : public CFileBuffer {
public:
CLibrary(); // Constructor
void Go(); // Do whatever the command line says
void Dump(); // Print contents of library
//static char *TruncateMemberName(char const*);// Remove path and truncate object file name to 15 characters
static char * ShortenMemberName(char const *name); // Truncate library member name to 15 characters and make unique. The original long name is not overwritten
static char * StripMemberName(char *); // Remove path from library member name. Original long name is overwritten
const char * GetModuleName(uint32_t Index); // Get name of module from index or page index
protected:
// Properties for UNIX input libraries only
uint32_t LongNames; // Offset to long names member
uint32_t LongNamesSize; // Size of long names member
uint32_t AlignBy; // Member alignment
// Properties for OMF input libraries only
uint32_t PageSize; // Alignment of members
uint32_t DictionaryOffset; // Offset to hash table
uint32_t DictionarySize; // Dictionary size, in 512 bytes blocks
// Methods and properties for reading library:
void DumpUNIX(); // Print contents of UNIX style library
void DumpOMF(); // Print contents of OMF style library
void CheckOMFHash(CMemoryBuffer &stringbuf, CSList<SStringEntry> &index);// Check if OMF library hash table has correct entries for all symbol names
void StartExtracting(); // Initialize before ExtractMember()
char * ExtractMember(CFileBuffer*); // Extract next library member from input library
char * ExtractMemberUNIX(CFileBuffer*); // Extract member of UNIX style library
char * ExtractMemberOMF(CFileBuffer*); // Extract member of OMF style library
uint32_t NextHeader(uint32_t Offset); // Loop through library headers
CConverter MemberBuffer; // Buffer containing single library member
uint32_t CurrentOffset; // Offset to current member
uint32_t CurrentNumber; // Number of current member
int MemberFileType; // File type of members
// Methods and properties for modifying or writing library
void FixNames(); // Calls StripMemberNamesUNIX or RebuildOMF
void StripMemberNamesUNIX(); // Remove path from member names
void RebuildOMF(); // Rebuild OMF style library to make member names short
void InsertMember(CFileBuffer*); // Add next library member to output library
void InsertMemberUNIX(CFileBuffer*);// Add member to UNIX library
void InsertMemberOMF(CFileBuffer*); // Add member to OMF library
void MakeBinaryFile(); // Combine string index and members into binary file
void MakeBinaryFileUNIX(); // Make UNIX library
void MakeBinaryFileOMF(); // Make OMF library
void SortStringTable(); // Sort the string table
void MakeSymbolTableUnix(); // Make symbol table for COFF, ELF or MACHO library
CFileBuffer OutFile; // Buffer for building output file
CSList<SStringEntry> StringEntries; // String table using SStringEntry
CMemoryBuffer LongNamesBuffer; // Buffer for building the "//" longnames member
CMemoryBuffer StringBuffer; // Buffer containing strings
CMemoryBuffer DataBuffer; // Buffer containing raw members
CSList<uint32_t> Indexes; // Buffer containing indexes into DataBuffer
int RepressWarnings; // Repress warnings when rebuilding library
};
// Definitions for OMF library hash table:
#define OMFNumBuckets 37 // Number of buckets per block
#define OMFBlockSize 512 // Size of each block
// Structure of hash table block
union SOMFHashBlock {
struct {
uint8_t Buckets[OMFNumBuckets]; // Indicators for each bucket
uint8_t FreeSpace; // Pointer to free space
uint8_t Data[OMFBlockSize-OMFNumBuckets-1]; // Contains strings and module indices
} b;
uint8_t Strings[OMFBlockSize]; // Start of each string = length
};
// Hash table handler
class COMFHashTable {
public:
void Init(SOMFHashBlock * blocks, uint32_t NumBlocks); // Initialize
void MakeHash(char * name); // Compute hash
int FindString(uint32_t & ModulePage, uint32_t & Conflicts); // Search for string. Get number of occurrences, module, number of conflicting strings
int InsertString(uint16_t & ModulePage); // Insert string in hash table. Return 0 if success
void MakeHashTable(CSList<SStringEntry> & StringEntries, CMemoryBuffer & StringBuffer, CMemoryBuffer & HashTable, CLibrary * Library); // Make hash table
protected:
char * String; // String to search for or insert
uint32_t StringLength; // Length of string
SOMFHashBlock * blocks; // Pointer to blocks
uint32_t NumBlocks; // Number of blocks
uint16_t StartBlock; // Start block for search
uint16_t StartBucket; // Start bucket for search
uint16_t BlockD; // Block step size in search
uint16_t BucketD; // Bucket step size in search
};
#endif // #ifndef LIBRARY_H
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