| /*============================================================================ |
| CMake - Cross Platform Makefile Generator |
| Copyright 2000-2015 Kitware, Inc. |
| |
| Distributed under the OSI-approved BSD License (the "License"); |
| see accompanying file Copyright.txt for details. |
| |
| This software is distributed WITHOUT ANY WARRANTY; without even the |
| implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the License for more information. |
| ============================================================================*/ |
| /*------------------------------------------------------------------------- |
| Portions of this source have been derived from the 'bindexplib' tool |
| provided by the CERN ROOT Data Analysis Framework project (root.cern.ch). |
| Permission has been granted by Pere Mato <pere.mato@cern.ch> to distribute |
| this derived work under the CMake license. |
| -------------------------------------------------------------------------*/ |
| |
| /* |
| *---------------------------------------------------------------------- |
| * Program: dumpexts.exe |
| * Author: Gordon Chaffee |
| * |
| * History: The real functionality of this file was written by |
| * Matt Pietrek in 1993 in his pedump utility. I've |
| * modified it to dump the externals in a bunch of object |
| * files to create a .def file. |
| * |
| * Notes: Visual C++ puts an underscore before each exported symbol. |
| * This file removes them. I don't know if this is a problem |
| * this other compilers. If _MSC_VER is defined, |
| * the underscore is removed. If not, it isn't. To get a |
| * full dump of an object file, use the -f option. This can |
| * help determine the something that may be different with a |
| * compiler other than Visual C++. |
| * ====================================== |
| * Corrections (Axel 2006-04-04): |
| * Conversion to C++. Mostly. |
| * |
| * Extension (Axel 2006-03-15) |
| * As soon as an object file contains an /EXPORT directive (which |
| * is generated by the compiler when a symbol is declared as |
| * declspec(dllexport)) no to-be-exported symbols are printed, |
| * as the linker will see these directives, and if those directives |
| * are present we only export selectively (i.e. we trust the |
| * programmer). |
| * |
| * ====================================== |
| * ====================================== |
| * Corrections (Valery Fine 23/02/98): |
| * |
| * The "(vector) deleting destructor" MUST not be exported |
| * To recognize it the following test are introduced: |
| * "@@UAEPAXI@Z" scalar deleting dtor |
| * "@@QAEPAXI@Z" vector deleting dtor |
| * "AEPAXI@Z" vector deleting dtor with thunk adjustor |
| * ====================================== |
| * Corrections (Valery Fine 12/02/97): |
| * |
| * It created a wrong EXPORTS for the global pointers and constants. |
| * The Section Header has been involved to discover the missing information |
| * Now the pointers are correctly supplied supplied with "DATA" descriptor |
| * the constants with no extra descriptor. |
| * |
| * Corrections (Valery Fine 16/09/96): |
| * |
| * It didn't work for C++ code with global variables and class definitons |
| * The DumpExternalObject function has been introduced to generate .DEF file |
| * |
| * Author: Valery Fine 16/09/96 (E-mail: fine@vxcern.cern.ch) |
| *---------------------------------------------------------------------- |
| */ |
| |
| #include <cmsys/Encoding.hxx> |
| #include <windows.h> |
| #include <stdio.h> |
| #include <string> |
| #include <fstream> |
| #include <iostream> |
| |
| typedef struct cmANON_OBJECT_HEADER_BIGOBJ { |
| /* same as ANON_OBJECT_HEADER_V2 */ |
| WORD Sig1; // Must be IMAGE_FILE_MACHINE_UNKNOWN |
| WORD Sig2; // Must be 0xffff |
| WORD Version; // >= 2 (implies the Flags field is present) |
| WORD Machine; // Actual machine - IMAGE_FILE_MACHINE_xxx |
| DWORD TimeDateStamp; |
| CLSID ClassID; // {D1BAA1C7-BAEE-4ba9-AF20-FAF66AA4DCB8} |
| DWORD SizeOfData; // Size of data that follows the header |
| DWORD Flags; // 0x1 -> contains metadata |
| DWORD MetaDataSize; // Size of CLR metadata |
| DWORD MetaDataOffset; // Offset of CLR metadata |
| |
| /* bigobj specifics */ |
| DWORD NumberOfSections; // extended from WORD |
| DWORD PointerToSymbolTable; |
| DWORD NumberOfSymbols; |
| } cmANON_OBJECT_HEADER_BIGOBJ; |
| |
| typedef struct _cmIMAGE_SYMBOL_EX { |
| union { |
| BYTE ShortName[8]; |
| struct { |
| DWORD Short; // if 0, use LongName |
| DWORD Long; // offset into string table |
| } Name; |
| DWORD LongName[2]; // PBYTE [2] |
| } N; |
| DWORD Value; |
| LONG SectionNumber; |
| WORD Type; |
| BYTE StorageClass; |
| BYTE NumberOfAuxSymbols; |
| } cmIMAGE_SYMBOL_EX; |
| typedef cmIMAGE_SYMBOL_EX UNALIGNED *cmPIMAGE_SYMBOL_EX; |
| |
| PIMAGE_SECTION_HEADER GetSectionHeaderOffset(PIMAGE_FILE_HEADER |
| pImageFileHeader) |
| { |
| return (PIMAGE_SECTION_HEADER) |
| ((DWORD_PTR)pImageFileHeader + |
| IMAGE_SIZEOF_FILE_HEADER + |
| pImageFileHeader->SizeOfOptionalHeader); |
| } |
| |
| PIMAGE_SECTION_HEADER GetSectionHeaderOffset(cmANON_OBJECT_HEADER_BIGOBJ* |
| pImageFileHeader) |
| { |
| return (PIMAGE_SECTION_HEADER) |
| ((DWORD_PTR)pImageFileHeader + |
| sizeof(cmANON_OBJECT_HEADER_BIGOBJ)); |
| } |
| |
| /* |
| + * Utility func, strstr with size |
| + */ |
| const char* StrNStr(const char* start, const char* find, size_t &size) { |
| size_t len; |
| const char* hint; |
| |
| if (!start || !find || !size) { |
| size = 0; |
| return 0; |
| } |
| len = strlen(find); |
| |
| while ((hint = (const char*) memchr(start, find[0], size-len+1))) { |
| size -= (hint - start); |
| if (!strncmp(hint, find, len)) |
| return hint; |
| start = hint + 1; |
| } |
| |
| size = 0; |
| return 0; |
| } |
| |
| template < |
| // cmANON_OBJECT_HEADER_BIGOBJ or IMAGE_FILE_HEADER |
| class ObjectHeaderType, |
| // cmPIMAGE_SYMBOL_EX or PIMAGE_SYMBOL |
| class SymbolTableType> |
| class DumpSymbols |
| { |
| public: |
| /* |
| *---------------------------------------------------------------------- |
| * Constructor -- |
| * |
| * Initialize variables from pointer to object header. |
| * |
| *---------------------------------------------------------------------- |
| */ |
| |
| DumpSymbols(ObjectHeaderType* ih, |
| FILE* fout, bool is64) { |
| this->ObjectImageHeader = ih; |
| this->SymbolTable = (SymbolTableType*) |
| ((DWORD_PTR)this->ObjectImageHeader |
| + this->ObjectImageHeader->PointerToSymbolTable); |
| this->FileOut = fout; |
| this->SectionHeaders = |
| GetSectionHeaderOffset(this->ObjectImageHeader); |
| this->ImportFlag = true; |
| this->SymbolCount = this->ObjectImageHeader->NumberOfSymbols; |
| this->Is64Bit = is64; |
| } |
| |
| /* |
| *---------------------------------------------------------------------- |
| * HaveExportedObjects -- |
| * |
| * Returns true if export directives (declspec(dllexport)) exist. |
| * |
| *---------------------------------------------------------------------- |
| */ |
| |
| bool HaveExportedObjects() { |
| WORD i = 0; |
| size_t size = 0; |
| const char * rawdata = 0; |
| PIMAGE_SECTION_HEADER pDirectivesSectionHeader = 0; |
| PIMAGE_SECTION_HEADER pSectionHeaders = this->SectionHeaders; |
| for(i = 0; (i < this->ObjectImageHeader->NumberOfSections && |
| !pDirectivesSectionHeader); i++) |
| if (!strncmp((const char*)&pSectionHeaders[i].Name[0], ".drectve",8)) |
| pDirectivesSectionHeader = &pSectionHeaders[i]; |
| if (!pDirectivesSectionHeader) return 0; |
| |
| rawdata=(const char*) |
| this->ObjectImageHeader+pDirectivesSectionHeader->PointerToRawData; |
| if (!pDirectivesSectionHeader->PointerToRawData || !rawdata) return 0; |
| |
| size = pDirectivesSectionHeader->SizeOfRawData; |
| const char* posImportFlag = rawdata; |
| while ((posImportFlag = StrNStr(posImportFlag, " /EXPORT:", size))) { |
| const char* lookingForDict = posImportFlag + 9; |
| if (!strncmp(lookingForDict, "_G__cpp_",8) || |
| !strncmp(lookingForDict, "_G__set_cpp_",12)) { |
| posImportFlag = lookingForDict; |
| continue; |
| } |
| |
| const char* lookingForDATA = posImportFlag + 9; |
| while (*(++lookingForDATA) && *lookingForDATA != ' '); |
| lookingForDATA -= 5; |
| // ignore DATA exports |
| if (strncmp(lookingForDATA, ",DATA", 5)) break; |
| posImportFlag = lookingForDATA + 5; |
| } |
| if(posImportFlag) { |
| return true; |
| } |
| return false; |
| } |
| |
| /* |
| *---------------------------------------------------------------------- |
| * DumpObjFile -- |
| * |
| * Dump an object file's exported symbols. |
| *---------------------------------------------------------------------- |
| */ |
| void DumpObjFile() { |
| if(!HaveExportedObjects()) { |
| this->DumpExternalsObjects(); |
| } |
| } |
| |
| /* |
| *---------------------------------------------------------------------- |
| * DumpExternalsObjects -- |
| * |
| * Dumps a COFF symbol table from an OBJ. |
| *---------------------------------------------------------------------- |
| */ |
| void DumpExternalsObjects() { |
| unsigned i; |
| PSTR stringTable; |
| std::string symbol; |
| DWORD SectChar; |
| /* |
| * The string table apparently starts right after the symbol table |
| */ |
| stringTable = (PSTR)&this->SymbolTable[this->SymbolCount]; |
| SymbolTableType* pSymbolTable = this->SymbolTable; |
| for ( i=0; i < this->SymbolCount; i++ ) { |
| if (pSymbolTable->SectionNumber > 0 && |
| ( pSymbolTable->Type == 0x20 || pSymbolTable->Type == 0x0)) { |
| if (pSymbolTable->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) { |
| /* |
| * The name of the Function entry points |
| */ |
| if (pSymbolTable->N.Name.Short != 0) { |
| symbol = ""; |
| symbol.insert(0, (const char *)pSymbolTable->N.ShortName, 8); |
| } else { |
| symbol = stringTable + pSymbolTable->N.Name.Long; |
| } |
| |
| // clear out any leading spaces |
| while (isspace(symbol[0])) symbol.erase(0,1); |
| // if it starts with _ and has an @ then it is a __cdecl |
| // so remove the @ stuff for the export |
| if(symbol[0] == '_') { |
| std::string::size_type posAt = symbol.find('@'); |
| if (posAt != std::string::npos) { |
| symbol.erase(posAt); |
| } |
| } |
| // For 64 bit builds we don't need to remove _ |
| if(!this->Is64Bit) |
| { |
| if (symbol[0] == '_') |
| { |
| symbol.erase(0,1); |
| } |
| } |
| if (this->ImportFlag) { |
| this->ImportFlag = false; |
| fprintf(this->FileOut,"EXPORTS \n"); |
| } |
| /* |
| Check whether it is "Scalar deleting destructor" and |
| "Vector deleting destructor" |
| */ |
| const char *scalarPrefix = "??_G"; |
| const char *vectorPrefix = "??_E"; |
| // original code had a check for |
| // symbol.find("real@") == std::string::npos) |
| // but if this disallows memmber functions with the name real |
| // if scalarPrefix and vectorPrefix are not found then print |
| // the symbol |
| if (symbol.compare(0, 4, scalarPrefix) && |
| symbol.compare(0, 4, vectorPrefix) ) |
| { |
| SectChar = |
| this-> |
| SectionHeaders[pSymbolTable->SectionNumber-1].Characteristics; |
| if (!pSymbolTable->Type && (SectChar & IMAGE_SCN_MEM_WRITE)) { |
| // Read only (i.e. constants) must be excluded |
| fprintf(this->FileOut, "\t%s \t DATA\n", symbol.c_str()); |
| } else { |
| if ( pSymbolTable->Type || |
| !(SectChar & IMAGE_SCN_MEM_READ)) { |
| fprintf(this->FileOut, "\t%s\n", symbol.c_str()); |
| } else { |
| // printf(" strange symbol: %s \n",symbol.c_str()); |
| } |
| } |
| } |
| } |
| } |
| else if (pSymbolTable->SectionNumber == IMAGE_SYM_UNDEFINED && |
| !pSymbolTable->Type && 0) { |
| /* |
| * The IMPORT global variable entry points |
| */ |
| if (pSymbolTable->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) { |
| symbol = stringTable + pSymbolTable->N.Name.Long; |
| while (isspace(symbol[0])) symbol.erase(0,1); |
| if (symbol[0] == '_') symbol.erase(0,1); |
| if (!this->ImportFlag) { |
| this->ImportFlag = true; |
| fprintf(this->FileOut,"IMPORTS \n"); |
| } |
| fprintf(this->FileOut, "\t%s DATA \n", symbol.c_str()+1); |
| } |
| } |
| |
| /* |
| * Take into account any aux symbols |
| */ |
| i += pSymbolTable->NumberOfAuxSymbols; |
| pSymbolTable += pSymbolTable->NumberOfAuxSymbols; |
| pSymbolTable++; |
| } |
| } |
| private: |
| bool ImportFlag; |
| FILE* FileOut; |
| DWORD_PTR SymbolCount; |
| PIMAGE_SECTION_HEADER SectionHeaders; |
| ObjectHeaderType* ObjectImageHeader; |
| SymbolTableType* SymbolTable; |
| bool Is64Bit; |
| }; |
| |
| bool |
| DumpFile(const char* filename, FILE *fout) |
| { |
| HANDLE hFile; |
| HANDLE hFileMapping; |
| LPVOID lpFileBase; |
| PIMAGE_DOS_HEADER dosHeader; |
| |
| hFile = CreateFileW(cmsys::Encoding::ToWide(filename).c_str(), |
| GENERIC_READ, FILE_SHARE_READ, NULL, |
| OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
| |
| if (hFile == INVALID_HANDLE_VALUE) { |
| fprintf(stderr, "Couldn't open file '%s' with CreateFile()\n", filename); |
| return false; |
| } |
| |
| hFileMapping = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL); |
| if (hFileMapping == 0) { |
| CloseHandle(hFile); |
| fprintf(stderr, "Couldn't open file mapping with CreateFileMapping()\n"); |
| return false; |
| } |
| |
| lpFileBase = MapViewOfFile(hFileMapping, FILE_MAP_READ, 0, 0, 0); |
| if (lpFileBase == 0) { |
| CloseHandle(hFileMapping); |
| CloseHandle(hFile); |
| fprintf(stderr, "Couldn't map view of file with MapViewOfFile()\n"); |
| return false; |
| } |
| |
| dosHeader = (PIMAGE_DOS_HEADER)lpFileBase; |
| if (dosHeader->e_magic == IMAGE_DOS_SIGNATURE) { |
| fprintf(stderr, "File is an executable. I don't dump those.\n"); |
| return false; |
| } |
| /* Does it look like a i386 COFF OBJ file??? */ |
| else if ( |
| ((dosHeader->e_magic == IMAGE_FILE_MACHINE_I386) || |
| (dosHeader->e_magic == IMAGE_FILE_MACHINE_AMD64)) |
| && (dosHeader->e_sp == 0) |
| ) { |
| /* |
| * The two tests above aren't what they look like. They're |
| * really checking for IMAGE_FILE_HEADER.Machine == i386 (0x14C) |
| * and IMAGE_FILE_HEADER.SizeOfOptionalHeader == 0; |
| */ |
| DumpSymbols<IMAGE_FILE_HEADER, IMAGE_SYMBOL> |
| symbolDumper((PIMAGE_FILE_HEADER) lpFileBase, fout, |
| (dosHeader->e_magic == IMAGE_FILE_MACHINE_AMD64)); |
| symbolDumper.DumpObjFile(); |
| } else { |
| // check for /bigobj format |
| cmANON_OBJECT_HEADER_BIGOBJ* h = |
| (cmANON_OBJECT_HEADER_BIGOBJ*) lpFileBase; |
| if(h->Sig1 == 0x0 && h->Sig2 == 0xffff) { |
| DumpSymbols<cmANON_OBJECT_HEADER_BIGOBJ, cmIMAGE_SYMBOL_EX> |
| symbolDumper((cmANON_OBJECT_HEADER_BIGOBJ*) lpFileBase, fout, |
| (dosHeader->e_magic == IMAGE_FILE_MACHINE_AMD64)); |
| symbolDumper.DumpObjFile(); |
| } else { |
| printf("unrecognized file format in '%s'\n", filename); |
| return false; |
| } |
| } |
| UnmapViewOfFile(lpFileBase); |
| CloseHandle(hFileMapping); |
| CloseHandle(hFile); |
| return true; |
| } |
