/**************************** library.cpp **********************************
* Author: Agner Fog
* Date created: 2006-08-27
* Last modified: 2008-08-30
* Project: objconv
* Module: library.cpp
* Description:
* This module contains code for reading, writing and manipulating function
* libraries (archives) of the UNIX type and OMF type.
*
* Copyright 2006-2008 GNU General Public License http://www.gnu.org/licenses
*****************************************************************************/
#include "stdafx.h"
// OMF Library flag names
SIntTxt OMFLibraryFlags[] = {
{0, "Flag = 0"},
{1, "Case sensitive"}
};
CLibrary::CLibrary() {
// Constructor
CurrentOffset = 0;
CurrentNumber = 0;
LongNames = 0;
LongNamesSize = 0;
AlignBy = 0;
MemberFileType = 0;
RepressWarnings = 0;
PageSize = 16;
}
void CLibrary::Go() {
// Do to library whatever the command line says
char const * MemberName1 = 0; // Name of library member
char const * MemberName2 = 0; // Modified name of library member
int action = 0; // Action to take on member
int FileType1 = 0; // File type of current member
int WordSize1 = 0; // Word size of current member
// check LibraryOptions and whether an output file is specified
if (cmd.FileOptions & CMDL_FILE_OUTPUT) {
// Output is a library file
if ((cmd.OutputFile == 0 || cmd.OutputFile[0] == 0) && !(cmd.LibraryOptions & CMDL_LIBRARY_ADDMEMBER)) {
err.submit(2503); // Output file name missing
return;
}
// Check extension
if (strstr(cmd.OutputFile, ".lib") && strstr(cmd.OutputFile, ".LIB") && strstr(cmd.OutputFile, ".a")) {
err.submit(1101); // Warning wrong extension
}
// Check if valid output type
if (cmd.OutputType >= IMPORT_LIBRARY_MEMBER) {
// Wrong output type
if (cmd.OutputType == FILETYPE_ASM) {
// Attempt to disassemble whole library
err.submit(2620);
}
else {
err.submit(2621);
}
return;
}
}
// Desired alignment = 2 for COFF and ELF, 8 for Mach-O
AlignBy = 2;
if (cmd.OutputType == FILETYPE_MACHO_LE) AlignBy = 8;
if (cmd.DumpOptions && !(cmd.LibraryOptions & CMDL_LIBRARY_EXTRACTMEM)) {
// Dump library, but not its members
Dump();
return;
}
// Reserve space for data buffer
DataBuffer.SetSize(GetBufferSize());
// Fix member names before extracting or adding members
if (GetDataSize()) Rebuild();
if (err.Number()) return; // Stop if error
// Check options
if (!cmd.LibraryOptions) cmd.LibraryOptions = CMDL_LIBRARY_CONVERT;
if (cmd.Verbose) {
// Tell what we are doing
if ((cmd.LibraryOptions & CMDL_LIBRARY_ADDMEMBER) && GetDataSize() == 0) {
// Creating library
printf("\nCreating library %s (%s)", FileName, GetFileFormatName(cmd.OutputType));
}
else if (OutputFileName) {
// Print input file name
if (cmd.InputType != cmd.OutputType) {
// Converting library type. Print input file type
int InType = cmd.InputType;
if (InType == FILETYPE_LIBRARY || InType == FILETYPE_OMFLIBRARY) InType = cmd.MemberType;
}
}
else {
printf("\nExtracting from library file: %s", FileName);
}
}
// Convert library or extract or add or dump all members
StartExtracting(); // Initialize before ExtractMember()
// Loop through input library
while ((MemberName1 = ExtractMember(&MemberBuffer)) != 0) {
// Check if any specific action required for this member
action = cmd.SymbolChange(MemberName1, &MemberName2, SYMT_LIBRARYMEMBER);
if ((action != SYMA_CHANGE_NAME && action != SYMA_EXTRACT_MEMBER) || MemberName2 == 0) {
MemberName2 = MemberName1; // No name change
}
MemberBuffer.FileName = MemberName1;
MemberBuffer.OutputFileName = MemberName2;
if (action == SYMA_DELETE_MEMBER) {
// Remove this member from library
if (cmd.Verbose) {
printf("\nRemoving member %s from library", MemberName1);
}
continue;
}
if (action == SYMA_ADD_MEMBER) {
// Replace this member with new file
// (Message comes later when adding new member)
continue;
}
// Check type of this member
FileType1 = MemberBuffer.GetFileType();
if (FileType1 == 0) continue;
WordSize1 = MemberBuffer.WordSize;
// if (!(cmd.LibraryOptions & (CMDL_LIBRARY_EXTRACTMEM | CMDL_LIBRARY_ADDMEMBER))) {
// Not adding or extracting members. Apply conversion options to all members
if (cmd.SymbolChangesRequested() || FileType1 != cmd.OutputType) {
// Conversion or name change requested
MemberBuffer.Go(); // Do required conversion
if (err.Number()) break; // Stop if error
}
// }
// Check type again after conversion
FileType1 = MemberBuffer.GetFileType();
if (MemberFileType == 0) MemberFileType = FileType1;
if (WordSize == 0) WordSize = WordSize1;
if (FileType1 != MemberFileType || WordSize1 != WordSize) {
// Library members have different type or word size
err.submit(1102);
}
if (cmd.LibraryOptions & CMDL_LIBRARY_EXTRACTMEM) {
// Extract member(s)
if (action == SYMA_EXTRACT_MEMBER || cmd.LibraryOptions == CMDL_LIBRARY_EXTRACTALL) {
// Extract this member
if (cmd.DumpOptions == 0 && cmd.OutputType != CMDL_OUTPUT_DUMP) {
// Write this member to file
if (err.Number()) return; // Check first if error
if (cmd.SymbolChangesRequested()) {
// Conversion or name change requested
MemberBuffer.Go();
if (err.Number()) return; // Stop if error
}
if (cmd.Verbose) {
// Tell what we are doing
if (MemberName1 == MemberName2) {
printf("\nExtracting file %s from library", MemberName1);
}
else {
printf("\nExtracting library member %s to file %s", MemberName1, MemberName2);
}
}
// Write this member to file
if (MemberName2) MemberBuffer.OutputFileName = MemberName2;
MemberBuffer.Write();
}
else {
// Dump this member
MemberBuffer.Go();
}
}
}
else if (cmd.DumpOptions == 0) {
// Add member to new library
if (cmd.Verbose) {
// Tell what we are doing
if (strcmp(MemberName1, MemberName2) != 0) {
printf("\nRenaming member %s to %s", MemberName1, MemberName2);
}
}
// Put into new library
InsertMember(&MemberBuffer);
}
} // End of loop through library
// Stop if error
if (err.Number()) return;
if (cmd.LibraryOptions & CMDL_LIBRARY_ADDMEMBER) {
// Add object files to library
SSymbolChange const * sym;
// Loop through file names to add
while ((sym = cmd.GetMemberToAdd()) != 0) {
MemberBuffer.Reset(); // Reset MemberBuffer
// Name of object file
MemberBuffer.FileName = sym->Name2; // Name of object file
MemberBuffer.OutputFileName = sym->Name1; // Name of new member
// Read object file
MemberBuffer.Read();
// Stop if read failed
if (err.Number()) continue;
// Detect file type
int NewMemberType = MemberBuffer.GetFileType();
if (cmd.Verbose) {
// Tell what we are doing
if (sym->Done) {
printf("\nReplacing member %s with file %s", sym->Name1, sym->Name2);
}
else {
printf("\nAdding member %s from file %s", sym->Name1, sym->Name2);
}
if (NewMemberType != cmd.OutputType) {
// Converting type
printf(". Converting from %s.", GetFileFormatName(NewMemberType));
}
}
// Do any conversion required
MemberBuffer.Go();
// Stop if error
if (err.Number()) continue;
// Check if file type is right after conversion
MemberFileType = MemberBuffer.FileType;
if (WordSize == 0) WordSize = MemberBuffer.WordSize;
if (MemberFileType != cmd.OutputType) {
// Library members have different type
err.submit(2504, GetFileFormatName(MemberBuffer.FileType)); continue;
}
if (MemberBuffer.WordSize != WordSize) {
// Library members have different word size
err.submit(2505, MemberBuffer.WordSize); continue;
}
// Put into library
MemberBuffer.FileName = MemberBuffer.OutputFileName;
InsertMember(&MemberBuffer);
} // End of loop through object file names
}
// Stop if error
if (err.Number()) return;
if (cmd.LibraryOptions & CMDL_LIBRARY_EXTRACTMEM) {
cmd.CheckExtractSuccess(); // Check if members to extract were found
}
if (cmd.FileOptions & CMDL_FILE_OUTPUT) {
// Make output library
MakeBinaryFile();
// Take over OutFile buffer
*this << OutFile;
}
else {
// No output library
OutputFileName = 0;
}
}
void CLibrary::Rebuild() {
// Rebuild library: fix member names
// Dispatch according to library type
switch (cmd.InputType) {
case FILETYPE_OMF: case FILETYPE_OMFLIBRARY:
// Rebuild OMF style library
RebuildOMF(); break;
case FILETYPE_LIBRARY:
default:
// Rebuild UNIX style library
RebuildUNIX(); break;
}
}
void CLibrary::RebuildOMF() {
// Rebuild OMF style library.
// Removes paths from member names, truncates to 16 characters, and makes unique.
// Symbol table is removed, not remade
SOMFRecordPointer rec; // Current OMF record
char * ModuleName; // Module name
SStringEntry se; // String entry record to save
COMFFileBuilder NewBuffer; // Buffer for rebuilt library
uint32 Align; // Alignment
// Remember member file type
cmd.MemberType = FILETYPE_OMF;
// Initialize record pointer
rec.Start(Buf(), 0, GetDataSize());
// Read header
if (rec.Type2 != OMF_LIBHEAD) {err.submit(2500); return;} // Does not start with library header
// Read library header
DictionaryOffset = rec.GetDword();
DictionarySize = rec.GetWord();
rec.GetByte(); // Ignore flag
// Page size / alignment for members
PageSize = rec.End + 1;
Align = 1 << FloorLog2(PageSize); // Make power of 2
if (PageSize != Align) {
err.submit(2601, PageSize); // Error: not a power of 2
}
// Copy library header to new buffer
NewBuffer.Push(Buf(), PageSize);
// Reset record loop end when DictionaryOffset is known
rec.FileEnd = DictionaryOffset;
// Next record is start of first module
rec.GetNext();
if (rec.Type2 != OMF_THEADR) err.submit(2500); // Member does not start with THEADR
// Loop through the records of all OMF modules
do {
// Check record type
switch (rec.Type2) {
case OMF_THEADR: // Start of module
// Get name
ModuleName = rec.GetString();
// Remove path, truncate name and make unique
ModuleName = FixMemberNameOMF(ModuleName);
// Remember name to check for duplicates
se.String = StringBuffer.PushString(ModuleName);
se.Member = NewBuffer.GetDataSize();
StringEntries.Push(se);
// Make new THEADR record
NewBuffer.StartRecord(OMF_THEADR);
NewBuffer.PutString(ModuleName);
NewBuffer.EndRecord();
break;
case OMF_MODEND: case OMF_LIBEND: // End of module or library
// Copy MODEND record
NewBuffer.Push(Buf() + rec.FileOffset, rec.End + 1);
// Align output file by PageSize
NewBuffer.Align(PageSize);
break;
default: // Any other record in module
// Copy record unchanged
NewBuffer.Push(Buf() + rec.FileOffset, rec.End + 1);
break;
}
} // Point to next record
while (rec.GetNext(PageSize)); // End of loop through records
// Put dictionary offset in LIBHEAD record
DictionaryOffset = NewBuffer.GetDataSize();
NewBuffer.Get<uint32>(3) = DictionaryOffset;
// Take over modified library file
*this << NewBuffer;
// Empty used buffers
StringEntries.SetNum(0);
StringBuffer.SetSize(0);
}
void CLibrary::RebuildUNIX() {
// Rebuild UNIX style library
// Make member names unique and without path. Rebuild symbol table
char const * MemberName1 = 0; // Name of library member
uint32 OutputFileType;
// Save OutputType before changing it
OutputFileType = cmd.OutputType;
// Loop through input library
CurrentOffset = 8; CurrentNumber = 0;
while ((MemberName1 = ExtractMember(&MemberBuffer)) != 0) {
// Properties of member
MemberBuffer.FileName = MemberBuffer.OutputFileName = MemberName1;
// Check if import library
if (MemberBuffer.Get<uint32>(0) == 0xFFFF0000) {
// Import library. Cannot do anything sensible
err.submit(2507, cmd.InputFile); return;
}
// Remember member type
cmd.MemberType = MemberBuffer.GetFileType();
// Temporarily set OutputType to MemberType
cmd.OutputType = cmd.MemberType;
// Put into new library
InsertMember(&MemberBuffer);
}
// Avoid getting warnings twice for duplicate symbols
RepressWarnings = 1;
// Make library header etc. and add all members to OutFile
MakeBinaryFile();
RepressWarnings = 0;
// Restore OutputType
cmd.OutputType = OutputFileType;
// Replace file buffer by OutFile
*this << OutFile;
// Clear buffers used for building OutFile
StringBuffer.SetSize(0);
StringEntries.SetNum(0);
Indexes.SetNum(0);
DataBuffer.SetSize(0);
}
void CLibrary::Dump() {
// Print contents of library
printf("\nDump of library %s\nExported symbols by member:\n", cmd.InputFile);
// Dispatch according to library type
switch (cmd.InputType) {
case FILETYPE_LIBRARY:
DumpUNIX(); break; // Print contents of UNIX style library
case FILETYPE_OMFLIBRARY:
DumpOMF(); break; // Print contents of OMF style library
default:
err.submit(9000); // Should not occur
}
}
void CLibrary::DumpOMF() {
// Print contents of OMF style library
uint8 Flags; // Dictionary flags
uint32 i; // Loop counter
uint32 Align; // Member alignment
uint32 RecordEnd; // End of OMF record
SOMFRecordPointer rec; // Current OMF record
char * MemberName; // Name of library member
char * SymbolName; // Name of public symbol in member
uint32 MemberStart; // Start of member
uint32 MemberEnd; // End of member
uint32 MemberNum = 0; // Member number
uint32 FirstPublic; // Index to first public name of current member
CMemoryBuffer Strings; // Local string buffer
CSList<SStringEntry> MemberIndex; // Local member index buffer
COMF Member; // Local buffer for member
DictionaryOffset = GetDataSize(); // Loop end. This value is changed when library header is read
rec.Start(Buf(), 0, DictionaryOffset); // Initialize record pointer
PageSize = 0;
// Loop through the records of all OMF modules
do {
// Check record type
switch (rec.Type2) {
case OMF_LIBHEAD: // Library header. This should be the first record
if (PageSize || rec.FileOffset > 0) {
err.submit(2600); break; // More than one header
}
// Read library header
DictionaryOffset = rec.GetDword();
DictionarySize = rec.GetWord();
Flags = rec.GetByte();
// Page size / alignment for members
PageSize = rec.End + 1;
Align = 1 << FloorLog2(PageSize); // Make power of 2
if (PageSize != Align) {
err.submit(2601, PageSize); // Error: not a power of 2
}
// Reset record loop end when DictionaryOffset is known
rec.FileEnd = DictionaryOffset;
// Print values from LIBHEAD
printf("\nOMF Library. Page size %i. %s.",
PageSize, Lookup(OMFLibraryFlags, Flags));
break;
case OMF_THEADR: // Module header. Member starts here
MemberName = rec.GetString(); // Get name
MemberStart = rec.FileOffset; // Get start address
printf("\nMember %s Offset 0x%X", MemberName, MemberStart);// Print member name
break;
case OMF_MODEND: // Member ends here.
RecordEnd = rec.FileOffset + rec.End + 1;// End of record
MemberEnd = RecordEnd; // = member end address
// Store member in temporary buffer
Member.SetSize(0);
Member.Push(Buf() + MemberStart, MemberEnd - MemberStart);
// Get public names from member
FirstPublic = MemberIndex.GetNumEntries();
Member.PublicNames(&Strings, &MemberIndex, ++MemberNum);
// Print public names
for (i = FirstPublic; i < MemberIndex.GetNumEntries(); i++) {
SymbolName = Strings.Buf() + MemberIndex[i].String;
printf("\n %s", SymbolName);
}
// Align next member by PageSize;
MemberEnd = (MemberEnd + PageSize - 1) & - (int32)PageSize;
rec.End = MemberEnd - rec.FileOffset - 1;
break;
case OMF_LIBEND: // Last member should end here
RecordEnd = rec.FileOffset + rec.End + 1;// End of record
if (RecordEnd != DictionaryOffset) err.submit(2602);
break;
}
} // Go to next record
while (rec.GetNext()); // End of loop through records
// Check hash table integrity
CheckOMFHash(Strings, MemberIndex);
// Check if there is an extended library dictionary
uint32 ExtendedDictionaryOffset = DictionaryOffset + DictionarySize * 512;
if (ExtendedDictionaryOffset > GetDataSize()) {
err.submit(2500); // File is truncated
}
if (ExtendedDictionaryOffset < GetDataSize()) {
// Library contains extended dictionary
uint32 ExtendedDictionarySize = GetDataSize() - ExtendedDictionaryOffset;
uint8 DictionaryType = Get<uint8>(ExtendedDictionaryOffset); // Read first byte of extended dictionary
if (DictionaryType == OMF_LIBEXT) {
// Extended dictionary in the official format
printf("\nExtended dictionary IBM/MS format. size %i", ExtendedDictionarySize);
}
else if (ExtendedDictionarySize >= 10 && (DictionaryType == 0xAD || Get<uint16>(ExtendedDictionaryOffset + 2) == MemberNum)) {
// Extended dictionary in the proprietary Borland format, documented only in US Patent 5408665, 1995
printf("\nExtended dictionary Borland format. size %i", ExtendedDictionarySize);
}
else {
// Unknown format
printf("\nExtended dictionary size %i, unknown type 0x%02X",
ExtendedDictionarySize, DictionaryType);
}
}
}
void CLibrary::DumpUNIX() {
// Print contents of UNIX style library
const char * MemberName = 0;
CurrentOffset = 8; CurrentNumber = 0;
// Loop through library
while (CurrentOffset + sizeof(SUNIXLibraryHeader) < DataSize) {
// Reset buffers
StringBuffer.SetSize(0);
MemberBuffer.Reset();
StringEntries.SetNum(0);
// Get member name
MemberName = ExtractMember(&MemberBuffer);
if (MemberName == 0) break;
printf("\nMember %s", MemberName);
// Detect file type of member
MemberFileType = MemberBuffer.GetFileType();
WordSize = MemberBuffer.WordSize;
printf (" - %s", GetFileFormatName(MemberFileType));
if (WordSize) printf("-%i", MemberBuffer.WordSize);
// Get symbol table for specific file type
switch (MemberFileType) {
case FILETYPE_ELF:
if (WordSize == 32) {
// Make instance of file parser, 32 bit template
CELF<ELF32STRUCTURES> elf;
MemberBuffer >> elf; // Transfer MemberBuffer to elf object
elf.PublicNames(&StringBuffer, &StringEntries, 0);
break;
}
else {
// Make instance of file parser, 64 bit template
CELF<ELF64STRUCTURES> elf;
MemberBuffer >> elf; // Transfer MemberBuffer to elf object
elf.PublicNames(&StringBuffer, &StringEntries, 0);
break;
}
case FILETYPE_COFF: {
CCOFF coff;
MemberBuffer >> coff; // Transfer MemberBuffer to coff object
coff.PublicNames(&StringBuffer, &StringEntries, 0);
break;}
case FILETYPE_MACHO_LE:
if (WordSize == 32) {
// Make instance of file parser, 32 bit template
CMACHO<MAC32STRUCTURES> mac;
MemberBuffer >> mac; // Transfer MemberBuffer to coff object
mac.PublicNames(&StringBuffer, &StringEntries, 0);
break;
}
else {
// Make instance of file parser, 64 bit template
CMACHO<MAC64STRUCTURES> mac;
MemberBuffer >> mac; // Transfer MemberBuffer to coff object
mac.PublicNames(&StringBuffer, &StringEntries, 0);
break;
}
case IMPORT_LIBRARY_MEMBER: {
// This is an import library
char * name1 = MemberBuffer.Buf() + 20;
printf("\n Import %s from %s", name1, name1 + strlen(name1) + 1);
break;}
default:
printf("\n Cannot extract symbol names from this file type");
break;
}
// Loop through table of public names
for (uint32 i = 0; i < StringEntries.GetNumEntries(); i++) {
uint32 j = StringEntries[i].String;
printf("\n %s", StringBuffer.Buf() + j);
}
}
}
uint32 CLibrary::NextHeader(uint32 Offset) {
// Loop through library headers.
// Input = current offset. Output = next offset
SUNIXLibraryHeader * Header; // Member header
int32 MemberSize; // Size of member
//uint32 HeaderExtra = 0; // Extra added to size of header
uint32 NextOffset; // Offset of next header
if (Offset + sizeof(SUNIXLibraryHeader) >= DataSize) {
// No more members
return 0;
}
// Find header
Header = &Get<SUNIXLibraryHeader>(Offset);
// Size of member
MemberSize = atoi(Header->FileSize);
if (MemberSize < 0 || MemberSize + Offset + sizeof(SUNIXLibraryHeader) > DataSize) {
err.submit(2500); // Points outside file
return 0;
}
if (strncmp(Header->Name, "#1/", 3) == 0) {
// Name refers to long name after the header
// This variant is used by Mac and some versions of BSD.
// HeaderExtra is included in MemberSize:
// HeaderExtra = atoi(Header->Name+3);
}
// Get next offset
NextOffset = Offset + sizeof(SUNIXLibraryHeader) + MemberSize;
// Round up to align by 2
NextOffset = (NextOffset + 1) & ~ 1;
// Check if last
if (NextOffset >= DataSize) NextOffset = 0;
return NextOffset;
}
void CLibrary::StartExtracting() {
// Initialize before ExtractMember()
if (cmd.InputType == FILETYPE_OMFLIBRARY) {
SOMFRecordPointer rec; // OMF records
rec.Start(Buf(), 0, GetDataSize()); // Initialize record pointer
if (rec.Type2 != OMF_LIBHEAD) {
err.submit(2500); return; // This should not happen
}
// Read library header
DictionaryOffset = rec.GetDword(); // Read dictionary offset
DictionarySize = rec.GetWord(); // Read dictionary size
rec.GetByte(); // Read flag
// Page size / alignment for members
PageSize = rec.End + 1;
uint32 align = 1 << FloorLog2(PageSize); // Make power of 2
if (PageSize != align) {
err.submit(2601, PageSize); // Error: not a power of 2
}
CurrentOffset = PageSize; // Offset to first library member
}
else {
// Unix style library. First header at offset 8
CurrentOffset = 8;
}
// Current member number
CurrentNumber = 0;
}
const char * CLibrary::ExtractMember(CFileBuffer * Destination) {
// Extract library member
// Dispatch according to library type
if (cmd.InputType == FILETYPE_OMFLIBRARY || cmd.InputType == FILETYPE_OMF) {
return ExtractMemberOMF(Destination);
}
else {
return ExtractMemberUNIX(Destination);
}
}
const char * CLibrary::ExtractMemberOMF(CFileBuffer * Destination) {
// Extract member of OMF style library
uint32 RecordEnd; // End of OMF record
SOMFRecordPointer rec; // Current OMF record
const char * MemberName; // Name of library member
uint32 MemberStart; // Start of member
uint32 MemberEnd; // End of member
if (CurrentOffset >= DictionaryOffset) return 0;// No more members
rec.Start(Buf(), CurrentOffset, DictionaryOffset);// Initialize record pointer
// Loop through the records of all OMF modules
do {
// Check record type
switch (rec.Type2) {
case OMF_THEADR: // Module header. Member starts here
MemberName = rec.GetString(); // Get name
MemberStart = rec.FileOffset; // Get start address
break;
case OMF_MODEND: // Member ends here.
RecordEnd = rec.FileOffset + rec.End +1;// End of record
MemberEnd = RecordEnd; // = member end address
// Save member as raw data
if (Destination) {
Destination->SetSize(0); // Make sure destination buffer is empty
Destination->FileType = Destination->WordSize = 0;
Destination->Push(Buf() + MemberStart, MemberEnd - MemberStart);
}
// Align next member by PageSize;
rec.GetNext(PageSize);
CurrentOffset = rec.FileOffset;
// Check name
if (MemberName[0] == 0) MemberName = "NoName!";
// Return member name
return MemberName;
case OMF_LIBEND: // Last member should end here
RecordEnd = rec.FileOffset + rec.End + 1;// End of record
if (RecordEnd != DictionaryOffset) err.submit(2602);
// No more members:
return 0;
}
} // Go to next record
while (rec.GetNext()); // End of loop through records
err.submit(2610); // Library end record not found
return 0;
}
const char * CLibrary::ExtractMemberUNIX(CFileBuffer * Destination) {
// Extract member of UNIX style library
// This function is called repeatedly to get each member of library/archive
SUNIXLibraryHeader * Header = 0; // Member header
uint32 MemberSize = 0; // Size of member
uint32 HeaderExtra = 0; // Extra added to size of header
uint32 NameIndex; // Index into long names member
char * Name = 0; // Name of member
int Skip = 1; // Skip record and search for next
int i; // Loop counter
char * p; // Used for loop through string
if (CurrentOffset == 0 || CurrentOffset + sizeof(SUNIXLibraryHeader) >= DataSize) {
// No more members
return 0;
}
// Search for member
while (Skip && CurrentOffset) {
HeaderExtra = 0;
// Extract next library member from input library
Header = &Get<SUNIXLibraryHeader>(CurrentOffset);
// Size of member
MemberSize = (uint32)atoi(Header->FileSize);
if (MemberSize + CurrentOffset + sizeof(SUNIXLibraryHeader) > DataSize) {
err.submit(2500); // Points outside file
return 0;
}
// Member name
Name = Header->Name;
if (strncmp(Name, "// ", 3) == 0) {
// This is the long names member. Remember its position
LongNames = CurrentOffset + sizeof(SUNIXLibraryHeader);
LongNamesSize = MemberSize;
// The long names are terminated by '/' or 0, depending on system,
// but may contain non-terminating '/'. Find out which type we have:
// Pointer to LongNames record
p = Buf() + LongNames;
// Find out whether we have terminating zeroes:
if (LongNamesSize > 1 && p[LongNamesSize-1] == '/' || (p[LongNamesSize-1] <= ' ' && p[LongNamesSize-2] == '/')) {
// Names are terminated by '/'. Replace all '/' by 0 in the longnames record
for (uint32 j = 0; j < LongNamesSize; j++, p++) {
if (*p == '/') *p = 0;
}
}
}
else if (strncmp(Name, "/ ", 2) == 0
|| strncmp(Name, "__.SYMDEF", 9) == 0) {
// This is a symbol index member.
// The symbol index is not used because we are always building a new symbol index.
}
else if (Name[0] == '/' && Name[1] >= '0' && Name[1] <= '9' && LongNames) {
// Name contains index into LongNames record
NameIndex = atoi(Name+1);
if (NameIndex < LongNamesSize) {
Name = Buf() + LongNames + NameIndex;
}
else {
Name = (char*)"NoName!";
}
Skip = 0;
}
else if (strncmp(Name, "#1/", 3) == 0) {
// Name refers to long name after the header
// This variant is used by Mac and some versions of BSD
HeaderExtra = atoi(Name+3);
Name += sizeof(SUNIXLibraryHeader);
if (MemberSize > HeaderExtra) {
// The length of the name, HeaderExtra, is included in the
// Header->FileSize field. Subtract to get the real file size
MemberSize -= HeaderExtra;
}
if (strncmp(Name, "__.SYMDEF", 9) == 0) {
// Symbol table "__.SYMDEF SORTED" as long name
Skip = 1;
}
else {
Skip = 0;
}
}
else {
// Ordinary short name
// Name may be terminated by '/' or space. Replace termination char by 0
for (i = 15; i >= 0; i--) {
if (Name[i] == ' ' || Name[i] == '/') Name[i] = 0;
else break;
}
// Terminate name with max length by overwriting Date field, which we are not using
Name[16] = 0;
Skip = 0;
}
// Point to next member
CurrentOffset = NextHeader(CurrentOffset);
// Increment number
CurrentNumber += !Skip;
} // End of while loop
// Save member as raw data
if (Destination) {
Destination->SetSize(0); // Make sure destination buffer is empty
Destination->FileType = Destination->WordSize = 0;
Destination->Push((int8*)Header + sizeof(SUNIXLibraryHeader) + HeaderExtra, MemberSize);
}
// Check name
if (Name[0] == 0) Name = (char*)"NoName!";
// Return member name
return Name;
}
void CLibrary::InsertMember(CFileBuffer * member) {
// Add member to output library
if (cmd.OutputType == FILETYPE_OMF) {
InsertMemberOMF(member); // OMF style output library
}
else {
InsertMemberUNIX(member); // UNIX style output library
}
}
void CLibrary::InsertMemberOMF(CFileBuffer * member) {
// Add member to OMF library
// Check file type
if (member->GetFileType() != FILETYPE_OMF) err.submit(9000);
// Get word size
WordSize = member->WordSize;
// Store offset
uint32 offset = DataBuffer.GetDataSize();
Indexes.Push(offset);
// Store member
DataBuffer.Push(member->Buf(), member->GetDataSize());
DataBuffer.Align(PageSize);
// Member index
uint32 mindex = Indexes.GetNumEntries() - 1;
// Get public string table
COMF omf;
*member >> omf; // Translate member to class OMF
omf.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << omf; // Return buffer to member
}
void CLibrary::InsertMemberUNIX(CFileBuffer * member) {
// Add next library member to output library
uint32 RawSize = 0; // Size of binary file
uint32 AlignmentPadding = 0; // Padding after file
// Get word size
WordSize = member->WordSize;
// Make member header
SUNIXLibraryHeader header;
memset(&header, ' ', sizeof(SUNIXLibraryHeader)); // Fill with spaces
// Name of member
if (member->OutputFileName == 0 || *member->OutputFileName == 0) member->OutputFileName = member->FileName;
char * name = FixMemberNameUNIX(member->OutputFileName);
// Set length of member string after header
int NameLength = 0;
if (cmd.OutputType == FILETYPE_MACHO_LE) {
// Mach-O library stores name after header record.
// Name is zero padded to length NameLength = 20
NameLength = 20;
strcpy(header.Name, "#1/20");
}
else {
// ELF and COFF library store names < 16 characters in the name field
strncpy(header.Name, name, 15);
}
// Date
sprintf(header.Date, "%u", (uint32)time(0));
// User and group id
header.UserID[0] = '0';
header.GroupID[0] = '0';
// File mode
strcpy(header.FileMode, "100666");
// Size of binary file
RawSize = member->GetDataSize();
// Calculate alignment padding
if (AlignBy) {
AlignmentPadding = uint32(-int32(RawSize)) & (AlignBy-1);
}
// File size including name string
sprintf(header.FileSize, "%u", NameLength + RawSize + AlignmentPadding);
// Header end
header.HeaderEnd[0] = '`';
header.HeaderEnd[1] = '\n';
// Remove terminating zeroes
for (uint32 i = 0; i < sizeof(SUNIXLibraryHeader); i++) {
if (((char*)&header)[i] == 0) ((char*)&header)[i] = ' ';
}
// Store offset
uint32 offset = DataBuffer.GetDataSize();
Indexes.Push(offset);
// Store member header
DataBuffer.Push(&header, sizeof(header));
// Store member name after header if Mach-O
if (NameLength) {
// Mach-O library stores name after header record.
char membernamebuffer[32];
memset (membernamebuffer, 0, sizeof(membernamebuffer));
strncpy (membernamebuffer, name, 16);
DataBuffer.Push(membernamebuffer, NameLength);
}
// Store member
DataBuffer.Push(member->Buf(), RawSize);
// Align by padding with '\n'
for (uint32 i = 0; i < AlignmentPadding; i++) {
DataBuffer.Push("\n", 1);
}
// Member index
uint32 mindex = Indexes.GetNumEntries() - 1;
// Get public string table
switch(member->GetFileType()) {
case FILETYPE_COFF: {
CCOFF coff;
*member >> coff; // Translate member to type COFF
coff.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << coff; // Return buffer to member
break;}
case FILETYPE_OMF: {
COMF omf;
*member >> omf; // Translate member to type COFF
omf.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << omf; // Return buffer to member
break;}
case FILETYPE_ELF:
if (WordSize == 32) {
// Make instance of file parser, 32 bit template
CELF<ELF32STRUCTURES> elf;
*member >> elf; // Translate member to type ELF
elf.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << elf; // Return buffer to member
break;
}
else {
// Make instance of file parser, 64 bit template
CELF<ELF64STRUCTURES> elf;
*member >> elf; // Translate member to type ELF
elf.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << elf; // Return buffer to member
break;
}
case FILETYPE_MACHO_LE:
if (WordSize == 32) {
// Make instance of file parser, 32 bit template
CMACHO<MAC32STRUCTURES> mac;
*member >> mac; // Translate member to type ELF
mac.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << mac; // Return buffer to member
break;
}
else {
// Make instance of file parser, 64 bit template
CMACHO<MAC64STRUCTURES> mac;
*member >> mac; // Translate member to type ELF
mac.PublicNames(&StringBuffer, &StringEntries, mindex); // Make list of public names
*member << mac; // Return buffer to member
break;
}
default: // Type not supported
err.submit(2501, GetFileFormatName(member->GetFileType()));
break;
}
}
char * CLibrary::TruncateMemberName(char const * name) {
// Remove path and truncate object file name to 15 characters
// This function removes any path from the member name,
// changes the extension to the default for the the output file type,
// changes any spaces to underscores, and
// truncates the member name to 15 characters for the sake of compatibility.
// The return value is an ASCII string in a static buffer
static char TruncName[32]; // Truncated name
int maxlen; // Max length, not including extension
char const * p1; // Point to start of name without path
char const * extension; // Default extension for file type
int i; // Loop counter
int len; // String length
static int DummyNumber = 0; // Count invalid/null names
int FileType; // File type
// Remove path
len = (int)strlen(name); p1 = name;
for (i = len-1; i >= 0; i--) {
if (name[i] == '/' || name[i] == '\\' || name[i] == ':') {
p1 = name + i + 1; break;
}
}
// Remove extension
len = (int)strlen(p1);
for (i = len-1; i >= 0; i--) {
if (p1[i] == '.') {
len = i; break;
}
}
// Check if any name remains
if (len == 0) { // No name. Make one
sprintf(TruncName, "NoName%i", ++DummyNumber);
p1 = TruncName; len = (int)strlen(p1);
}
// Get file type
FileType = cmd.OutputType;
if (FileType == CMDL_OUTPUT_DUMP || FileType == 0) FileType = cmd.InputType;
if (FileType >= FILETYPE_LIBRARY) FileType = cmd.MemberType;
// Get default extension and max length of name without extension
if (FileType == FILETYPE_COFF || FileType == FILETYPE_OMF) {
maxlen = 11; extension = ".obj";
}
else {
maxlen = 13; extension = ".o";
}
if (len > maxlen) len = maxlen;
// Truncate name
strncpy(TruncName, p1, len);
TruncName[len] = 0;
// Remove any spaces or other illegal characters
len = (int)strlen(TruncName);
for (i = 0; i < len; i++) {
if ((uint8)TruncName[i] <= 0x20) TruncName[i] = '_';
}
// Add default extension
strcpy(TruncName+strlen(TruncName), extension);
// Terminate
TruncName[15] = 0;
return TruncName;
}
char * CLibrary::FixMemberNameOMF(char const *name) {
// Truncate library member name to 15 characters and make unique
uint32 i; // Loop counter
uint32 IsDuplicate = 0; // Name is duplicate
uint32 Len; // String length
uint32 n; // Number appended to name
uint32 np; // Position of number in case number is appended to name
static char FixedName[32]; // Modified name
// Truncate name and copy to FixedName buffer
strcpy(FixedName, TruncateMemberName(name));
// Find extension
Len = (uint32)strlen(FixedName);
for (np = 0; np < Len; np++) if (FixedName[np] == '.') break;
// Where to place number in case number is appended to name
if (np > 8) np = 8;
// Loop to find unique name
while (1) {
IsDuplicate = 0;
// Check if unique
for (i = 0; i < StringEntries.GetNumEntries(); i++) {
if (strcmp(FixedName, StringBuffer.Buf() + StringEntries[i].String) == 0) {
// Duplicate name found
IsDuplicate = 1;
break;
}
}
if (!IsDuplicate) break; // Name is unique
// Name is duplicate. Modify name.
n = atoi(FixedName+np); // Get any number in the end of name
sprintf(FixedName+np, "%i.obj", n+1); // .. and add 1. Append extension
}
return FixedName;
}
char * CLibrary::FixMemberNameUNIX(char const * name) {
// This function does the same as TruncateMemberName(name).
// In addition, it makes the name unique and terminates it with a '/'
static char TruncName[32]; // Store truncated name
uint32 len, maxlen; // Length and maximum length of name
char const * extension; // Default extension for file type
uint32 i, n; // Temporary
uint32 np; // Position of number in case number is appended to name
strcpy(TruncName, TruncateMemberName(name)); // Truncate name
TruncName[16] = 0;
// Get default extension and max length of name without extension
if (cmd.OutputType == FILETYPE_COFF || cmd.OutputType == FILETYPE_OMF) {
maxlen = 11; extension = ".obj";
}
else {
maxlen = 13; extension = ".o";
}
// Find extension
len = (uint32)strlen(TruncName);
for (np = 0; np < len; np++) if (TruncName[np] == '.') break;
// Where to place number in case number is appended to name
if (np > maxlen - 3) np = maxlen - 3;
// Check if another member has the same truncated name
while (MemberNameExistsUNIX(TruncName)) {
// Another member has the same name. Make name unique
n = atoi(TruncName+np); // Get any number in the end of name
// Increment number and re-insert extension
sprintf(TruncName+np, "%i%s", n+1, extension);
}
// Terminate
len = (int)strlen(TruncName);
TruncName[len] = '/'; // Terminate with '/'
if (cmd.OutputType == FILETYPE_MACHO_LE) {
// Mach-O library stores name differently
TruncName[len] = 0; // Terminate with 0
}
for (i = len+1; i < 16; i++) TruncName[i] = ' '; // Pad with spaces
TruncName[16] = 0; // Terminate with 0
return TruncName;
}
int CLibrary::MemberNameExistsUNIX(char * name) {
// Check if DataBuffer contains a member with this name
char Name2[20];
// Loop through previous members in DataBuffer
for (uint32 i = 0; i < Indexes.GetNumEntries(); i++) {
uint32 offset = Indexes[i];
// Copy name of member i
memcpy(Name2, DataBuffer.Buf() + offset, 16);
// Terminate name
for (int j = 0; j < 16; j++) {
if (Name2[j] == '.' || Name2[j] == '/') Name2[j] = 0;
}
// Case-insensitive compare of names
if (stricmp(name, Name2) == 0) {
// Identical name found
return i + 1;
}
}
// No identical name found
return 0;
}
void CLibrary::SortStringTable() {
// Sort the string table in ASCII order
// Length of table
int32 n = StringEntries.GetNumEntries();
if (n <= 0) return;
// Point to table of SStringEntry records
SStringEntry * Table = &StringEntries[0];
// String pointers
char * s1, * s2;
// Temporary record for swapping
SStringEntry temp;
// Simple Bubble sort:
int32 i, j;
for (i = 0; i < n; i++) {
for (j = 0; j < n - i - 1; j++) {
s1 = StringBuffer.Buf() + Table[j].String;
s2 = StringBuffer.Buf() + Table[j+1].String;
if (strcmp(s1, s2) > 0) {
// Swap records
temp = Table[j];
Table[j] = Table[j+1];
Table[j+1] = temp;
}
}
}
// Now StringEntries has been sorted. Reorder StringBuffer to the sort order.
CMemoryBuffer SortedStringBuffer; // Temporary buffer for strings in sort order
for (i = 0; i < n; i++) {
// Pointer to old string
s1 = StringBuffer.Buf() + Table[i].String;
// Update table to point to new string
Table[i].String = SortedStringBuffer.GetDataSize();
// Put string into SortedStringBuffer
SortedStringBuffer.PushString(s1);
}
if (SortedStringBuffer.GetDataSize() != StringBuffer.GetDataSize()) {
// The two string buffers should be same size
err.submit(9000); return;
}
// Copy SortedStringBuffer into StringBuffer
memcpy(StringBuffer.Buf(), SortedStringBuffer.Buf(), StringBuffer.GetDataSize());
// Check for duplicate symbols
for (i = 0; i < n-1; i++) {
s1 = StringBuffer.Buf() + Table[i].String;
for (j = i + 1; j < n; j++) {
s2 = StringBuffer.Buf() + Table[j].String;
if (strcmp(s1,s2) == 0) {
// Duplicate found
// Compose error string "Modulename1 and Modulename2"
char ErrorModuleNames[64];
strcpy(ErrorModuleNames, GetModuleName(Table[i].Member));
strcpy(ErrorModuleNames + strlen(ErrorModuleNames), " and ");
strcpy(ErrorModuleNames + strlen(ErrorModuleNames), GetModuleName(Table[j].Member));
// submit error message
err.submit(1214, s1, ErrorModuleNames);
// Prevent excessive messages
i++;
}
else {
break;
}
}
}
}
uint32 EndianChange(uint32 n) {
// Convert little-endian to big-endian number, or vice versa
return (n << 24) | ((n & 0x0000FF00) << 8) | ((n & 0x00FF0000) >> 8) | (n >> 24);
}
uint32 RoundEven(uint32 n) {
// Round up number to nearest even
return (n + 1) & uint32(-2);
}
uint32 Round4(uint32 n) {
// Round up number to nearest multiple of 4
return (n + 3) & uint32(-4);
}
void CLibrary::MakeSymbolTableUnix() {
// Make symbol table for COFF, ELF or MACHO library
// Uses UNIX archive format for COFF, BSD and Mac
uint32 i; // Loop counter
uint32 MemberOffset; // Offset to member
uint32 LongNameSize = 0; // Length of symbol table name if stored after record
int SymbolTableType = cmd.OutputType; // FILETYPE_COFF = 1: COFF
// FILETYPE_ELF = 3: ELF
// FILETYPE_MACHO_LE = 4: Mac, unsorted
// 0x10000004: Mac, sorted
// Newer Mac tools require the sorted type, unless there are multiple publics with same name
if (SymbolTableType == FILETYPE_MACHO_LE) SymbolTableType |= 0x10000000;
// Make symbol table header
SUNIXLibraryHeader SymTab; // Symbol table header
memset(&SymTab, 0, sizeof(SymTab)); // Fill with spaces
SymTab.Name[0] = '/'; // Name = '/'
// The silly Mac linker requires that the symbol table has a date stamp not
// older than the .a file. Fix this by post-dating the symbol table:
uint32 PostDate = 0;
if (SymbolTableType & 0x10000000) PostDate = 100; // Post-date if mac sorted symbol table
sprintf(SymTab.Date, "%u", (uint32)time(0) + PostDate); // Date stamp for symbol table
SymTab.UserID[0] = '0'; // UserID = 0
SymTab.GroupID[0] = '0'; // GroupID = 0
strcpy(SymTab.FileMode, "100666"); // FileMode = 0100666
SymTab.HeaderEnd[0] = '`'; // End with "`\n"
SymTab.HeaderEnd[1] = '\n';
// File header
OutFile.Push("!<arch>\n", 8);
uint32 NumMembers = Indexes.GetNumEntries(); // Number of members
uint32 NumStrings = StringEntries.GetNumEntries(); // Number of symbol names
uint32 StringsLen = StringBuffer.GetDataSize(); // Size of string table
// Calculate sizes of string index records, not including header
// Unsorted index, used in ELF and COFF libraries
uint32 Index1Size = (NumStrings+1)*4 + StringsLen;
// Sorted index, used in COFF libraries as second member
uint32 Index2Size = (NumMembers+2)*4 + NumStrings*2 + StringsLen;
// Sorted index, used in Mach-O libraries
uint32 Index3Size = Round4(NumStrings*8 + 8 + StringsLen);
// Offset to first member
uint32 FirstMemberOffset = 0;
switch (SymbolTableType) {
case FILETYPE_COFF:
FirstMemberOffset = 8 + 2*sizeof(SUNIXLibraryHeader) + RoundEven(Index1Size) + RoundEven(Index2Size);
break;
case FILETYPE_ELF:
FirstMemberOffset = 8 + sizeof(SUNIXLibraryHeader) + RoundEven(Index1Size);
break;
case FILETYPE_MACHO_LE:
FirstMemberOffset = 8 + sizeof(SUNIXLibraryHeader) + Index3Size;
break;
case FILETYPE_MACHO_LE | 0x10000000: // Mac, sorted
LongNameSize = 20;
FirstMemberOffset = 8 + sizeof(SUNIXLibraryHeader) + Index3Size + LongNameSize;
break;
default:
err.submit(2501, GetFileFormatName(cmd.OutputType));
}
// Make unsorted symbol table for COFF or ELF output
if (SymbolTableType == FILETYPE_COFF || SymbolTableType == FILETYPE_ELF) {
// Put file size into symbol table header
sprintf(SymTab.FileSize, "%u", Index1Size);
// Remove terminating zeroes
for (i = 0; i < sizeof(SymTab); i++) {
if (((char*)&SymTab)[i] == 0) ((char*)&SymTab)[i] = ' ';
}
// Store header
OutFile.Push(&SymTab, sizeof(SymTab));
// Store table of offsets
uint32 BigEndian; // Number converted to big-endian
BigEndian = EndianChange(NumStrings);
OutFile.Push(&BigEndian, sizeof(BigEndian)); // Number of symbols
// Loop through strings
for (i = 0; i < NumStrings; i++) {
// Get record in temporary symbol table
SStringEntry * psym = &StringEntries[i];
// Get offset of member in DataBuffer
MemberOffset = Indexes[psym->Member];
// Add size of headers to compute member offset in final file
BigEndian = EndianChange(MemberOffset + FirstMemberOffset);
// Store offset as big endian number
OutFile.Push(&BigEndian, sizeof(BigEndian));
}
// Store strings
OutFile.Push(StringBuffer.Buf(), StringBuffer.GetDataSize());
// Align by 2
if (OutFile.GetDataSize() & 1) {
OutFile.Push("\n", 1);
}
}
// Sort string table
if (!RepressWarnings && SymbolTableType != FILETYPE_MACHO_LE) SortStringTable();
// Make sorted symbol table, COFF style
if (SymbolTableType == FILETYPE_COFF) {
if (NumMembers > 0xFFFF) err.submit(2502); // Too many members
// Reuse symbol table header, change size entry
sprintf(SymTab.FileSize, "%u", Index2Size);
// Remove terminating zeroes
for (i = 0; i < sizeof(SymTab); i++) {
if (((char*)&SymTab)[i] == 0) ((char*)&SymTab)[i] = ' ';
}
// Store header
OutFile.Push(&SymTab, sizeof(SymTab));
// Store number of members
OutFile.Push(&NumMembers, sizeof(NumMembers));
// Store member offsets
for (i = 0; i < NumMembers; i++) {
MemberOffset = Indexes[i] + FirstMemberOffset;
OutFile.Push(&MemberOffset, sizeof(MemberOffset));
}
// Store number of symbols
OutFile.Push(&NumStrings, sizeof(NumStrings));
// Store member index for each string
// Loop through strings
for (i = 0; i < NumStrings; i++) {
// Get record in temporary symbol table
SStringEntry * psym = &StringEntries[i];
// Get member index, 16 bits
uint16 MemberI = (uint16)(psym->Member + 1);
OutFile.Push(&MemberI, sizeof(MemberI));
}
// Store strings
OutFile.Push(StringBuffer.Buf(), StringBuffer.GetDataSize());
// Align by 2
if (OutFile.GetDataSize() & 1) {
OutFile.Push("\n", 1);
}
}
// Make sorted or unsorted symbol table, Mach-O style
if ((SymbolTableType & 0xFFFF) == FILETYPE_MACHO_LE) {
if (SymbolTableType & 0x10000000) {
// Sorted table. "__.SYMDEF SORTED" stored as long name
memcpy(SymTab.Name, "#1/20 ", 16);
// Put file size into symbol table header, including long name length
sprintf(SymTab.FileSize, "%u", Index3Size + LongNameSize);
}
else {
// Unsorted table. "__.SYMDEF" stored as short name
memcpy(SymTab.Name, "__.SYMDEF ", 16);
// Put file size into symbol table header
sprintf(SymTab.FileSize, "%u", Index3Size);
}
// Remove terminating zeroes
for (i = 0; i < sizeof(SymTab); i++) {
if (((char*)&SymTab)[i] == 0) ((char*)&SymTab)[i] = ' ';
}
// Store header
OutFile.Push(&SymTab, sizeof(SymTab));
if (SymbolTableType & 0x10000000) {
// Store long name "__.SYMDEF SORTED"
OutFile.Push("__.SYMDEF SORTED\0\0\0\0", LongNameSize);
}
// Store an array of records of string index and member offsets
// Store length first
uint32 ArrayLength = NumStrings * sizeof(SStringEntry);
OutFile.Push(&ArrayLength, sizeof(ArrayLength));
// Loop through strings
for (i = 0; i < NumStrings; i++) {
// Get record in temporary symbol table
SStringEntry * psym = &StringEntries[i];
SStringEntry Record;
Record.String = psym->String;
Record.Member = Indexes[psym->Member] + FirstMemberOffset;
// Store symbol record
OutFile.Push(&Record, sizeof(Record));
}
// Store length of string table
StringsLen = Round4(StringsLen); // Round up to align by 4
OutFile.Push(&StringsLen, sizeof(StringsLen));
// Store strings
OutFile.Push(StringBuffer.Buf(), StringBuffer.GetDataSize());
// Align by 4
OutFile.Align(4);
// Cross check precalculated size (8 is the size of "!<arch>\n" file identifier)
if (OutFile.GetDataSize() != Index3Size + sizeof(SymTab) + 8 + LongNameSize) err.submit(9000);
}
}
void CLibrary::MakeBinaryFile() {
if (cmd.OutputType == FILETYPE_OMF) {
MakeBinaryFileOMF(); // OMF style output library
}
else {
MakeBinaryFileUNIX(); // UNIX style output library
}
}
void CLibrary::MakeBinaryFileOMF() {
// Make OMF library
uint32 PageSize; // Page size / alignment for output library
uint32 temp; // Temporary
uint16 temp16; // Temporary
uint8 temp8; // Temporary
uint32 MemberI; // Member number
uint32 MemberOffset; // File offset of member in output file
uint32 MemberStart; // Start of member in DataBuffer
uint32 MemberEnd; // End of member in DataBuffer
uint32 SymbolI; // Public symbol number
uint32 DictionaryOffset2; // Offset to hash table
CSList<uint32> MemberPageIndex; // Remember page index of each member
// Check number of entries
if (DataBuffer.GetNumEntries() >= 0x8000) {
err.submit(2606); return; // Error: too big
}
// Find optimal page size
PageSize = DataBuffer.GetDataSize() / (0x8000 - DataBuffer.GetNumEntries());
// Make power of 2, minimum 16
temp = FloorLog2(PageSize) + 1;
if (temp < 4) temp = 4;
PageSize = 1 << temp;
// Make library header
temp8 = OMF_LIBHEAD;
OutFile.Push(&temp8, 1); // Library header type byte
temp16 = PageSize - 3;
OutFile.Push(&temp16, 2); // Record length
OutFile.Push(0, 6); // Dictionary offset and size: insert later
temp8 = 1;
OutFile.Push(&temp8, 1); // Flag: case sensitive
OutFile.Align(PageSize); // Align for first member
// Allocate MemberPageIndex
MemberPageIndex.SetNum(Indexes.GetNumEntries());
// Insert members
for (MemberI = 0; MemberI < Indexes.GetNumEntries(); MemberI++) {
// Find member in DataBuffer
MemberStart = Indexes[MemberI]; // Start of member in DataBuffer
if (MemberI+1 < Indexes.GetNumEntries()) {
// Not last member
MemberEnd = Indexes[MemberI+1]; // End of member in DataBuffer = start of next member
}
else {
// Last member
MemberEnd = DataBuffer.GetDataSize(); // End of member in DataBuffer = end of DataBuffer
}
// Put member into output file
MemberOffset = OutFile.Push(DataBuffer.Buf() + MemberStart, MemberEnd - MemberStart);
// Align next member
OutFile.Align(PageSize);
// Member page index
MemberPageIndex[MemberI] = MemberOffset / PageSize;
}
// Change member index to member page index in StringEntries
// Loop through StringEntries
for (SymbolI = 0; SymbolI < StringEntries.GetNumEntries(); SymbolI++) {
// Member index
MemberI = StringEntries[SymbolI].Member;
if (MemberI < MemberPageIndex.GetNumEntries()) {
// Change to member page
StringEntries[SymbolI].Member = MemberPageIndex[MemberI];
}
}
// Make OMF_LIBEND record
temp8 = OMF_LIBEND;
OutFile.Push(&temp8, 1); // Library header type byte
temp16 = PageSize - 3; // Length of rest of record
OutFile.Push(&temp16, 2); // Record length
OutFile.Align(PageSize); // Align
// Offset to hash table
DictionaryOffset2 = OutFile.GetDataSize();
// Make hash table for public symbols
COMFHashTable HashTable;
HashTable.MakeHashTable(StringEntries, StringBuffer, OutFile, this); // Make hash table
// Insert missing values in library header
// Hash table offset
OutFile.Get<uint32>(3) = DictionaryOffset2;
// Hash table size
OutFile.Get<uint16>(7) = (OutFile.GetDataSize() - DictionaryOffset2) / OMFBlockSize;
}
void CLibrary::MakeBinaryFileUNIX() {
// Make UNIX library
// Combine string index and members into binary file
// Reserve file buffer for output file
OutFile.SetSize(GetBufferSize());
if (cmd.OutputType == FILETYPE_COFF || cmd.OutputType == FILETYPE_ELF || cmd.OutputType == FILETYPE_MACHO_LE) {
// COFF, ELF and MAach-O libraries all use Unix-style archive with
// differences in symbol table format
// Make symbol table
MakeSymbolTableUnix();
// Store all members
OutFile.Push(DataBuffer.Buf(), DataBuffer.GetDataSize());
}
else {
err.submit(2501, GetFileFormatName(cmd.OutputType));
}
}
void CLibrary::CheckOMFHash(CMemoryBuffer &stringbuf, CSList<SStringEntry> &index) {
// Check if OMF library hash table has correct entries for all symbol names
uint32 i; // Loop counter
int8 * Name; // Public symbol name
COMFHashTable HashTab; // OMF hash table interpreter
uint32 NString; // Number of occurrences of Name in hash table
uint32 Module; // Module with first occurrence of Name
uint32 Conf, ConfSum = 0; // Count number of conflicting entries in hash table
// Initialize hash table interpreter
HashTab.Init(&Get<SOMFHashBlock>(DictionaryOffset), DictionarySize);
// Loop through public symbol names
for (i = 0; i < index.GetNumEntries(); i++) {
// Get public name
Name = stringbuf.Buf() + index[i].String;
// Make hash
HashTab.MakeHash(Name);
// Search for string
NString = HashTab.FindString(Module, Conf);
// Count conflicting strings
ConfSum += Conf;
// Make error message if not 1 occurrence of Name
if (NString == 0) err.submit(2603, Name); // Error if not found
if (NString > 1) err.submit(1213, NString, Name); // Warning more than one occurrence
//printf("\n%i occurence of %s, module offset %i", NString, Name, Module);
}
printf("\n\nHash table %i blocks x 37 buckets at offet 0x%X.\n Efficiency: %i conflicts for %i entries",
DictionarySize, DictionaryOffset, ConfSum, index.GetNumEntries());
}
const char * CLibrary::GetModuleName(uint32 Index) {
// Get name of module from index (UNIX) or page index (OMF)
static char name[32];
if (cmd.OutputType == FILETYPE_OMF || cmd.OutputType == FILETYPE_OMFLIBRARY) {
// Get name of module in OMF library
if (Index * PageSize < OutFile.GetDataSize() && OutFile.Get<uint8>(Index * PageSize) == OMF_THEADR) {
SOMFRecordPointer rec; // Record pointer
rec.Start(OutFile.Buf(), Index * PageSize, OutFile.GetDataSize());
if (rec.Type2 == OMF_THEADR) {
// Get module name from THEADR record
strncpy(name, rec.GetString(), 16);
// Make sure name is not too long
name[16] = 0;
// Return name
return name;
}
}
// No module starts here
return "?";
}
// UNIX style library.
if (Index < Indexes.GetNumEntries()) {
// Get offset from Index
uint32 Offset = Indexes[Index];
if (Offset < DataBuffer.GetDataSize()) {
// Copy name from header
memcpy(name, DataBuffer.Buf() + Offset, 16);
// Check for long name
if (strncmp(name, "#1/", 3) == 0) {
// Long name format
memcpy(name, DataBuffer.Buf()+Offset+sizeof(SUNIXLibraryHeader), 16);
}
// Find terminating '/'
for (int i = 0; i < 16; i++) if (name[i] == '/') name[i] = 0;
// Make sure name is not too long
name[16] = 0;
// return name
return name;
}
}
// Error
return "?";
}
