/* * Made after: * CVDump - Parses through a Visual Studio .DBG file in CodeView 4 format * and dumps the info to STDOUT in a human-readable format * * Copyright 2000 John R. Sheets * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include <stdlib.h> #include <stdio.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #include <time.h> #ifdef HAVE_SYS_TYPES_H # include <sys/types.h> #endif #ifdef HAVE_SYS_STAT_H # include <sys/stat.h> #endif #ifdef HAVE_SYS_MMAN_H #include <sys/mman.h> #endif #include <fcntl.h> #include "windef.h" #include "winedump.h" #include "pe.h" #include "cvinclude.h" /* * .DBG File Layout: * * IMAGE_SEPARATE_DEBUG_HEADER * IMAGE_SECTION_HEADER[] * IMAGE_DEBUG_DIRECTORY[] * OMFSignature * debug data (typical example) * - IMAGE_DEBUG_TYPE_MISC * - IMAGE_DEBUG_TYPE_FPO * - IMAGE_DEBUG_TYPE_CODEVIEW * OMFDirHeader * OMFDirEntry[] */ /* * Descriptions: * * (hdr) IMAGE_SEPARATE_DEBUG_HEADER - .DBG-specific file header; holds info that * applies to the file as a whole, including # of COFF sections, file offsets, etc. * (hdr) IMAGE_SECTION_HEADER - list of COFF sections copied verbatim from .EXE; * although this directory contains file offsets, these offsets are meaningless * in the context of the .DBG file, because only the section headers are copied * to the .DBG file...not the binary data it points to. * (hdr) IMAGE_DEBUG_DIRECTORY - list of different formats of debug info contained in file * (see IMAGE_DEBUG_TYPE_* descriptions below); tells where each section starts * (hdr) OMFSignature (CV) - Contains "NBxx" signature, plus file offset telling how far * into the IMAGE_DEBUG_TYPE_CODEVIEW section the OMFDirHeader and OMFDirEntry's sit * (data) IMAGE_DEBUG_TYPE_MISC - usually holds name of original .EXE file * (data) IMAGE_DEBUG_TYPE_FPO - Frame Pointer Optimization data; used for dealing with * optimized stack frames (optional) * (data) IMAGE_DEBUG_TYPE_CODEVIEW - *** THE GOOD STUFF *** * This block of data contains all the symbol tables, line number info, etc., * that the Visual C++ debugger needs. * (hdr) OMFDirHeader (CV) - * (hdr) OMFDirEntry (CV) - list of subsections within CodeView debug data section */ /* * The .DBG file typically has three arrays of directory entries, which tell * the OS or debugger where in the file to look for the actual data * * IMAGE_SECTION_HEADER - number of entries determined by: * (IMAGE_SEPARATE_DEBUG_HEADER.NumberOfSections) * * IMAGE_DEBUG_DIRECTORY - number of entries determined by: * (IMAGE_SEPARATE_DEBUG_HEADER.DebugDirectorySize / sizeof (IMAGE_DEBUG_DIRECTORY)) * * OMFDirEntry - number of entries determined by: * (OMFDirHeader.cDir) */ extern void *PE_base; extern IMAGE_NT_HEADERS* PE_nt_headers; static void* cv_base /* = 0 */; static int dump_cv_sst_module(OMFDirEntry* omfde) { OMFModule* module; OMFSegDesc* segDesc; int i; module = PRD(Offset(cv_base) + omfde->lfo, sizeof(OMFModule)); if (!module) {printf("Can't get the OMF-Module, aborting\n"); return FALSE;} printf(" olvNumber: %u\n", module->ovlNumber); printf(" iLib: %u\n", module->iLib); printf(" cSeg: %u\n", module->cSeg); printf(" Style: %c%c\n", module->Style[0], module->Style[1]); printf(" Name: %.*s\n", *(BYTE*)((char*)(module + 1) + sizeof(OMFSegDesc) * module->cSeg), (char*)(module + 1) + sizeof(OMFSegDesc) * module->cSeg + 1); segDesc = PRD(Offset(module + 1), sizeof(OMFSegDesc) * module->cSeg); if (!segDesc) {printf("Can't get the OMF-SegDesc, aborting\n"); return FALSE;} for (i = 0; i < module->cSeg; i++) { printf (" segment #%2d: offset = [0x%8lx], size = [0x%8lx]\n", segDesc->Seg, segDesc->Off, segDesc->cbSeg); segDesc++; } return TRUE; } static int dump_cv_sst_global_pub(OMFDirEntry* omfde) { long fileoffset; OMFSymHash* header; BYTE* symbols; BYTE* curpos; PUBSYM32* sym; unsigned symlen; int recordlen; char nametmp[256]; fileoffset = Offset(cv_base) + omfde->lfo; printf (" GlobalPub section starts at file offset 0x%lx\n", fileoffset); printf (" Symbol table starts at 0x%lx\n", fileoffset + sizeof (OMFSymHash)); printf ("\n ----- Begin Symbol Table -----\n"); printf (" (type) (symbol name) (offset) (len) (seg) (ind)\n"); header = PRD(fileoffset, sizeof(OMFSymHash)); if (!header) {printf("Can't get OMF-SymHash, aborting\n");return FALSE;} symbols = PRD(fileoffset + sizeof(OMFSymHash), header->cbSymbol); if (!symbols) {printf("Can't OMF-SymHash details, aborting\n"); return FALSE;} /* We don't know how many symbols are in this block of memory...only what * the total size of the block is. Because the symbol's name is tacked * on to the end of the PUBSYM32 struct, each symbol may take up a different * # of bytes. This makes it harder to parse through the symbol table, * since we won't know the exact location of the following symbol until we've * already parsed the current one. */ for (curpos = symbols; curpos < symbols + header->cbSymbol; curpos += recordlen) { /* Point to the next PUBSYM32 in the table. */ sym = (PUBSYM32*)curpos; if (sym->reclen < sizeof(PUBSYM32)) break; symlen = sym->reclen - sizeof(PUBSYM32) + 1; if (symlen > sizeof(nametmp)) {printf("\nsqueeze%d\n", symlen);symlen = sizeof(nametmp) - 1;} memcpy(nametmp, curpos + sizeof (PUBSYM32) + 1, symlen); nametmp[symlen] = '\0'; printf (" 0x%04x %-30.30s [0x%8lx] [0x%4x] %d %ld\n", sym->rectyp, nametmp, sym->off, sym->reclen, sym->seg, sym->typind); /* The entire record is null-padded to the nearest 4-byte * boundary, so we must do a little extra math to keep things straight. */ recordlen = (sym->reclen + 3) & ~3; } return TRUE; } static int dump_cv_sst_global_sym(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static int dump_cv_sst_static_sym(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static int dump_cv_sst_libraries(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static int dump_cv_sst_global_types(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static int dump_cv_sst_seg_map(OMFDirEntry* omfde) { OMFSegMap* segMap; OMFSegMapDesc* segMapDesc; int i; segMap = PRD(Offset(cv_base) + omfde->lfo, sizeof(OMFSegMap)); if (!segMap) {printf("Can't get SegMap, aborting\n");return FALSE;} printf(" cSeg: %u\n", segMap->cSeg); printf(" cSegLog: %u\n", segMap->cSegLog); segMapDesc = PRD(Offset(segMap + 1), segMap->cSeg * sizeof(OMFSegDesc)); if (!segMapDesc) {printf("Can't get SegDescr array, aborting\n");return FALSE;} for (i = 0; i < segMap->cSeg; i++) { printf(" SegDescr #%2d\n", i + 1); printf(" flags: %04X\n", segMapDesc[i].flags); printf(" ovl: %u\n", segMapDesc[i].ovl); printf(" group: %u\n", segMapDesc[i].group); printf(" frame: %u\n", segMapDesc[i].frame); printf(" iSegName: %u\n", segMapDesc[i].iSegName); printf(" iClassName: %u\n", segMapDesc[i].iClassName); printf(" offset: %lu\n", segMapDesc[i].offset); printf(" cbSeg: %lu\n", segMapDesc[i].cbSeg); } return TRUE; } static int dump_cv_sst_file_index(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static int dump_cv_sst_src_module(OMFDirEntry* omfde) { int i, j; BYTE* rawdata; unsigned long* seg_info_dw; unsigned short* seg_info_w; unsigned ofs; OMFSourceModule* sourceModule; OMFSourceFile* sourceFile; OMFSourceLine* sourceLine; rawdata = PRD(Offset(cv_base) + omfde->lfo, omfde->cb); if (!rawdata) {printf("Can't get srcModule subsection details, aborting\n");return FALSE;} /* FIXME: check ptr validity */ sourceModule = (void*)rawdata; printf (" Module table: Found %d file(s) and %d segment(s)\n", sourceModule->cFile, sourceModule->cSeg); for (i = 0; i < sourceModule->cFile; i++) { printf (" File #%2d begins at an offset of 0x%lx in this section\n", i + 1, sourceModule->baseSrcFile[i]); } /* FIXME: check ptr validity */ seg_info_dw = (void*)((char*)(sourceModule + 1) + sizeof(unsigned long) * (sourceModule->cFile - 1)); seg_info_w = (unsigned short*)(&seg_info_dw[sourceModule->cSeg * 2]); for (i = 0; i < sourceModule->cSeg; i++) { printf (" Segment #%2d start = 0x%lx, end = 0x%lx, seg index = %u\n", i + 1, seg_info_dw[i * 2], seg_info_dw[(i * 2) + 1], seg_info_w[i]); } ofs = sizeof(OMFSourceModule) + sizeof(unsigned long) * (sourceModule->cFile - 1) + sourceModule->cSeg * (2 * sizeof(unsigned long) + sizeof(unsigned short)); ofs = (ofs + 3) & ~3; /* the OMFSourceFile is quite unpleasant to use: * we have first: * unsigned short number of segments * unsigned short reservered * unsigned long baseSrcLn[# segments] * unsigned long offset[2 * #segments] * odd indices are start offsets * even indices are end offsets * unsigned char string length for file name * char file name (length is previous field) */ /* FIXME: check ptr validity */ sourceFile = (void*)(rawdata + ofs); seg_info_dw = (void*)((char*)sourceFile + 2 * sizeof(unsigned short) + sourceFile->cSeg * sizeof(unsigned long)); ofs += 2 * sizeof(unsigned short) + 3 * sourceFile->cSeg * sizeof(unsigned long); printf(" File table: %.*s\n", *(BYTE*)((char*)sourceModule + ofs), (char*)sourceModule + ofs + 1); for (i = 0; i < sourceFile->cSeg; i++) { printf (" Segment #%2d start = 0x%lx, end = 0x%lx, offset = 0x%lx\n", i + 1, seg_info_dw[i * 2], seg_info_dw[(i * 2) + 1], sourceFile->baseSrcLn[i]); } /* add file name length */ ofs += *(BYTE*)((char*)sourceModule + ofs) + 1; ofs = (ofs + 3) & ~3; for (i = 0; i < sourceModule->cSeg; i++) { sourceLine = (void*)(rawdata + ofs); seg_info_dw = (void*)((char*)sourceLine + 2 * sizeof(unsigned short)); seg_info_w = (void*)(&seg_info_dw[sourceLine->cLnOff]); printf (" Line table #%2d: Found %d line numbers for segment index %d\n", i, sourceLine->cLnOff, sourceLine->Seg); for (j = 0; j < sourceLine->cLnOff; j++) { printf (" Pair #%2d: offset = [0x%8lx], linenumber = %d\n", j + 1, seg_info_dw[j], seg_info_w[j]); } ofs += 2 * sizeof(unsigned short) + sourceLine->cLnOff * (sizeof(unsigned long) + sizeof(unsigned short)); ofs = (ofs + 3) & ~3; } return TRUE; } static int dump_cv_sst_align_sym(OMFDirEntry* omfde) { /*** NOT YET IMPLEMENTED ***/ return TRUE; } static void dump_codeview_all_modules(OMFDirHeader *omfdh) { unsigned i; OMFDirEntry *dirEntry; const char* str; if (!omfdh || !omfdh->cDir) return; dirEntry = PRD(Offset(omfdh + 1), omfdh->cDir * sizeof(OMFDirEntry)); if (!dirEntry) {printf("Can't read DirEntry array, aborting\n"); return;} for (i = 0; i < omfdh->cDir; i++) { switch (dirEntry[i].SubSection) { case sstModule: str = "sstModule"; break; case sstAlignSym: str = "sstAlignSym"; break; case sstSrcModule: str = "sstSrcModule"; break; case sstLibraries: str = "sstLibraries"; break; case sstGlobalSym: str = "sstGlobalSym"; break; case sstGlobalPub: str = "sstGlobalPub"; break; case sstGlobalTypes: str = "sstGlobalTypes"; break; case sstSegMap: str = "sstSegMap"; break; case sstFileIndex: str = "sstFileIndex"; break; case sstStaticSym: str = "sstStaticSym"; break; default: str = "<undefined>"; break; } printf("Module #%2d (%p)\n", i + 1, &dirEntry[i]); printf(" SubSection: %04X (%s)\n", dirEntry[i].SubSection, str); printf(" iMod: %d\n", dirEntry[i].iMod); printf(" lfo: %ld\n", dirEntry[i].lfo); printf(" cb: %lu\n", dirEntry[i].cb); switch (dirEntry[i].SubSection) { case sstModule: dump_cv_sst_module(&dirEntry[i]); break; case sstAlignSym: dump_cv_sst_align_sym(&dirEntry[i]); break; case sstSrcModule: dump_cv_sst_src_module(&dirEntry[i]); break; case sstLibraries: dump_cv_sst_libraries(&dirEntry[i]); break; case sstGlobalSym: dump_cv_sst_global_sym(&dirEntry[i]); break; case sstGlobalPub: dump_cv_sst_global_pub(&dirEntry[i]); break; case sstGlobalTypes: dump_cv_sst_global_types(&dirEntry[i]); break; case sstSegMap: dump_cv_sst_seg_map(&dirEntry[i]); break; case sstFileIndex: dump_cv_sst_file_index(&dirEntry[i]); break; case sstStaticSym: dump_cv_sst_static_sym(&dirEntry[i]); break; default: printf("unsupported type %x\n", dirEntry[i].SubSection); break; } printf("\n"); } return; } static void dump_codeview_headers(unsigned long base, unsigned long len) { OMFDirHeader *dirHeader; OMFSignature *signature; OMFDirEntry *dirEntry; unsigned i; int modulecount = 0, alignsymcount = 0, srcmodulecount = 0, librariescount = 0; int globalsymcount = 0, globalpubcount = 0, globaltypescount = 0; int segmapcount = 0, fileindexcount = 0, staticsymcount = 0; cv_base = PRD(base, len); if (!cv_base) {printf("Can't get full debug content, aborting\n");return;} signature = cv_base; printf(" CodeView Data\n"); printf(" Signature: %.4s\n", signature->Signature); printf(" Filepos: 0x%08lX\n", signature->filepos); if (memcmp(signature->Signature, "NB10", 4) == 0) { struct {DWORD TimeStamp; DWORD Dunno; char Name[1];}* pdb_data; pdb_data = (void*)(signature + 1); printf(" TimeStamp: %08lX (%s)\n", pdb_data->TimeStamp, get_time_str(pdb_data->TimeStamp)); printf(" Dunno: %08lX\n", pdb_data->Dunno); printf(" Filename: %s\n", pdb_data->Name); return; } if (memcmp(signature->Signature, "NB09", 4) != 0 && memcmp(signature->Signature, "NB11", 4) != 0) { printf("Unsupported signature, aborting\n"); return; } dirHeader = PRD(Offset(cv_base) + signature->filepos, sizeof(OMFDirHeader)); if (!dirHeader) {printf("Can't get debug header, aborting\n"); return;} printf(" Size of header: 0x%4X\n", dirHeader->cbDirHeader); printf(" Size per entry: 0x%4X\n", dirHeader->cbDirEntry); printf(" # of entries: 0x%8lX (%ld)\n", dirHeader->cDir, dirHeader->cDir); printf(" Offset to NextDir: 0x%8lX\n", dirHeader->lfoNextDir); printf(" Flags: 0x%8lX\n", dirHeader->flags); if (!dirHeader->cDir) return; dirEntry = PRD(Offset(dirHeader + 1), sizeof(OMFDirEntry) * dirHeader->cDir); if (!dirEntry) {printf("Can't get DirEntry array, aborting\n");return;} for (i = 0; i < dirHeader->cDir; i++) { switch (dirEntry[i].SubSection) { case sstModule: modulecount++; break; case sstAlignSym: alignsymcount++; break; case sstSrcModule: srcmodulecount++; break; case sstLibraries: librariescount++; break; case sstGlobalSym: globalsymcount++; break; case sstGlobalPub: globalpubcount++; break; case sstGlobalTypes: globaltypescount++; break; case sstSegMap: segmapcount++; break; case sstFileIndex: fileindexcount++; break; case sstStaticSym: staticsymcount++; break; } } /* This one has to be > 0 */ printf ("\nFound: %d sstModule subsections\n", modulecount); if (alignsymcount > 0) printf (" %d sstAlignSym subsections\n", alignsymcount); if (srcmodulecount > 0) printf (" %d sstSrcModule subsections\n", srcmodulecount); if (librariescount > 0) printf (" %d sstLibraries subsections\n", librariescount); if (globalsymcount > 0) printf (" %d sstGlobalSym subsections\n", globalsymcount); if (globalpubcount > 0) printf (" %d sstGlobalPub subsections\n", globalpubcount); if (globaltypescount > 0) printf (" %d sstGlobalTypes subsections\n", globaltypescount); if (segmapcount > 0) printf (" %d sstSegMap subsections\n", segmapcount); if (fileindexcount > 0) printf (" %d sstFileIndex subsections\n", fileindexcount); if (staticsymcount > 0) printf (" %d sstStaticSym subsections\n", staticsymcount); dump_codeview_all_modules(dirHeader); } static const char* get_coff_name( PIMAGE_SYMBOL coff_sym, const char* coff_strtab ) { static char namebuff[9]; const char* nampnt; if( coff_sym->N.Name.Short ) { memcpy(namebuff, coff_sym->N.ShortName, 8); namebuff[8] = '\0'; nampnt = &namebuff[0]; } else { nampnt = coff_strtab + coff_sym->N.Name.Long; } if( nampnt[0] == '_' ) nampnt++; return nampnt; } void dump_coff(unsigned long coffbase, unsigned long len) { PIMAGE_COFF_SYMBOLS_HEADER coff; PIMAGE_SYMBOL coff_sym; PIMAGE_SYMBOL coff_symbols; PIMAGE_LINENUMBER coff_linetab; char * coff_strtab; IMAGE_SECTION_HEADER *sectHead = (IMAGE_SECTION_HEADER*)((char*)PE_nt_headers + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER) + PE_nt_headers->FileHeader.SizeOfOptionalHeader); unsigned int i; const char * nampnt; int naux; coff = (PIMAGE_COFF_SYMBOLS_HEADER)PRD(coffbase, len); coff_symbols = (PIMAGE_SYMBOL) ((unsigned int) coff + coff->LvaToFirstSymbol); coff_linetab = (PIMAGE_LINENUMBER) ((unsigned int) coff + coff->LvaToFirstLinenumber); coff_strtab = (char *) (coff_symbols + coff->NumberOfSymbols); printf("\nDebug table: COFF format. modbase %p, coffbase %p\n", PE_base, coff); printf(" ID | seg:offs [ abs ] | symbol/function name\n"); for(i=0; i < coff->NumberOfSymbols; i++ ) { coff_sym = coff_symbols + i; naux = coff_sym->NumberOfAuxSymbols; if( coff_sym->StorageClass == IMAGE_SYM_CLASS_FILE ) { printf("file %s\n", (char *) (coff_sym + 1)); i += naux; continue; } if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_STATIC) && (naux == 0) && (coff_sym->SectionNumber == 1) ) { DWORD base = sectHead[coff_sym->SectionNumber - 1].VirtualAddress; /* * This is a normal static function when naux == 0. * Just register it. The current file is the correct * one in this instance. */ nampnt = get_coff_name( coff_sym, coff_strtab ); printf("%05d | %02d:%08lx [%08lx] | %s\n", i, coff_sym->SectionNumber - 1, coff_sym->Value - base, coff_sym->Value, nampnt); i += naux; continue; } if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL) && ISFCN(coff_sym->Type) && (coff_sym->SectionNumber > 0) ) { DWORD base = sectHead[coff_sym->SectionNumber - 1].VirtualAddress; nampnt = get_coff_name( coff_sym, coff_strtab ); /* FIXME: add code to find out the file this symbol belongs to, * see winedbg */ printf("%05d | %02d:%08lx [%08lx] | %s\n", i, coff_sym->SectionNumber - 1, coff_sym->Value - base, coff_sym->Value, nampnt); i += naux; continue; } /* * For now, skip past the aux entries. */ i += naux; } } void dump_codeview(unsigned long base, unsigned long len) { dump_codeview_headers(base, len); } void dump_frame_pointer_omission(unsigned long base, unsigned long len) { /* FPO is used to describe nonstandard stack frames */ printf("FIXME: FPO (frame pointer omission) debug symbol dumping not implemented yet.\n"); }