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588 lines
19 KiB
C++
588 lines
19 KiB
C++
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// ZASSERT AND STACKTRACE are an improved assertion system which augments
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// the WIN32 assert.h standard _assert.
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// (c) 1999 Zachary B. Simpson
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// Code may be used and distributed freely as long as all
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// changes are noted appropriately.
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#ifdef WIN32
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#include "windows.h"
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#endif
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#include "stdio.h"
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#include "string.h"
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#include "stacktrace.h"
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char *stackTrace( int skipAssert ) {
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// Becuase this code may be running during a fatal,
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// I am weary of allocating large buffers. Thus,
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// the output will be written into this static
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// buffer. Teh OUTS macro simplifies writing into it.
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static char output[2048];
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output[0] = 0;
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#define OUTS sprintf( output+strlen(output),
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#ifdef WIN32
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// Get the exe name from the command line
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// It is surrounded by quotes in some cases
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char *exeName = GetCommandLine();
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if( *exeName == '"' ) {
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exeName++;
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}
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char *space = strchr( exeName, ' ' );
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if( space ) {
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*space = 0;
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}
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char *quote = strchr( exeName, '"' );
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if( quote ) {
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*quote = 0;
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}
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// Figure the base load address with GetModuleHandle
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unsigned int baseAddress = (int)GetModuleHandle( NULL );
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// Walk up the stack placing pointers to functions
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// in the stackTrace array and pointers to argument
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// lists into the argBase array.
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#define STACK_TRACE_SIZE 30
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unsigned int stackTrace[STACK_TRACE_SIZE];
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unsigned int argBase[STACK_TRACE_SIZE];
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int stackTraceCount = 0;
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volatile unsigned int *currBP;
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__asm mov [currBP], ebp;
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try {
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for( stackTraceCount=0; stackTraceCount<STACK_TRACE_SIZE; stackTraceCount++ ) {
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argBase[stackTraceCount] = (unsigned)(currBP+2);
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stackTrace[stackTraceCount] = *(currBP+1) - baseAddress;
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currBP = (unsigned *)*(currBP);
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}
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}
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catch( ... ) {
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}
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// memory map the exec file. This is done becuase
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// it is much harder to parse in memory since it
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// parts of it are moved around by the loader.
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// Also, we must use CreateFile here because of file sharing
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// since the file is currently opened by the process.
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HANDLE hFile = CreateFile( exeName, GENERIC_READ, FILE_SHARE_READ,
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0
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);
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if( hFile == INVALID_HANDLE_VALUE ) {
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return NULL;
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}
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HANDLE hFileMapping = CreateFileMapping( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
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if( hFileMapping == NULL ) {
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CloseHandle( hFile );
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return NULL;
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}
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char *basePtr = (char *)MapViewOfFile( hFileMapping, FILE_MAP_READ, 0, 0, 0 );
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if( basePtr == NULL ) {
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CloseHandle( hFileMapping );
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CloseHandle( hFile );
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return NULL;
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}
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// Now parse the file extracting the debug information
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// This involves quite a lot of header parsing
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// Ultimately, we will find there three variables:
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int numDebugFormats = 0;
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// How many debug format are in this exe
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int coffDebugInfoOffset = 0;
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// where the coff debug info starts
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IMAGE_DEBUG_DIRECTORY *debugDir = NULL;
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// primary debug headers
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// These two macros simplify traversing the structures
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#define MAKEPTR(type, var, offset) type *var = (type *)(basePtr + offset)
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// This macro help us make pointer relative to the base
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#define SETPTR(type, var, offset) var = (type *)(basePtr + offset)
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// This macro help us make pointer relative to the base
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// Get pointers to the primary headers...
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MAKEPTR( IMAGE_DOS_HEADER, dosHeader, 0 );
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MAKEPTR( IMAGE_NT_HEADERS, ntHeader, dosHeader->e_lfanew );
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// Go through each section looking for the .rdata section
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for( int i=0; i<ntHeader->FileHeader.NumberOfSections; i++ ) {
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IMAGE_SECTION_HEADER *secHead = &(IMAGE_FIRST_SECTION( ntHeader ))[i];
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if( ! stricmp( (char *)&secHead->Name[0], ".rdata" ) ) {
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numDebugFormats =
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ntHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG].Size
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/ sizeof(IMAGE_DEBUG_DIRECTORY)
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;
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if( numDebugFormats != 0 ) {
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SETPTR( IMAGE_DEBUG_DIRECTORY, debugDir,
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secHead->PointerToRawData +
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(
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ntHeader->OptionalHeader.DataDirectory
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[IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress
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- secHead->VirtualAddress
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)
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);
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break;
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}
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}
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}
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// Now have pointer to primary debug headers (debugDir) and
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// a count of number of debug formats (numDebugFormats)
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// Parse these to find the COFF headers
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IMAGE_COFF_SYMBOLS_HEADER *coffHeader = 0;
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for( i=0; i<numDebugFormats; i++, debugDir++ ) {
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if(
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debugDir->Type == IMAGE_DEBUG_TYPE_COFF &&
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ntHeader->FileHeader.PointerToSymbolTable
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) {
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SETPTR( IMAGE_COFF_SYMBOLS_HEADER, coffHeader, debugDir->PointerToRawData );
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break;
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}
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}
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if( !coffHeader ) {
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// There was not COFF debug information available.
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OUTS "Stack symbol information only available "
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"when linked with COFF debug symbols.\n"
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"Dumping hex trace instead:\n"
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);
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for( i=0; i<stackTraceCount; i++ ) {
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OUTS "%08X(", baseAddress+stackTrace[i] );
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try {
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int *a = (int *)argBase[i+1];
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for( int j=0; j<5; j++, a++ ) {
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OUTS "%s 0x%X", j==0?"":",", *a );
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}
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}
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catch( ... ) { }
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OUTS ")\r\n" );
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}
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CloseHandle( hFileMapping );
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CloseHandle( hFile );
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return output;
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}
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// Now have pointer to coff info. (coffHeader)
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// Use this to find line numbers,
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// IMAGE_LINENUMBER *lineNums = (IMAGE_LINENUMBER *)(
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// (char *)coffHeader + coffHeader->LvaToFirstLinenumber
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// );
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// int count = coffHeader->NumberOfLinenumbers;
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// for( i=0; i<count; i++, lineNums++ ) {
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// printf( "Addr: %05X Line: %04X\n", lineNums->Type.VirtualAddress, lineNums->Linenumber );
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// }
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// Now extract the COFF symbol table
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MAKEPTR( IMAGE_SYMBOL, coffSym, ntHeader->FileHeader.PointerToSymbolTable );
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int coffSymbolCount = ntHeader->FileHeader.NumberOfSymbols;
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// The string table apparently starts right after the symbol table
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char *stringTable = (PSTR)&coffSym[coffSymbolCount];
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// Becuase this code may be running during a fatal,
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// I am weary of allocating large buffers. Thus, I perform
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// this search without the help of any index or hash.
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IMAGE_SYMBOL *matchingStackSymbols[STACK_TRACE_SIZE];
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memset( matchingStackSymbols, 0, sizeof(IMAGE_SYMBOL *) * STACK_TRACE_SIZE );
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IMAGE_SYMBOL *lastSymbol = coffSym++;
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for( i=0; i<coffSymbolCount-1; i++ ) {
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char *symName =
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(char *)coffSym->N.Name.Short != 0 ?
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(char *)coffSym->N.ShortName :
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(char *)(stringTable + coffSym->N.Name.Long)
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;
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for( int j=0; j<stackTraceCount; j++ ) {
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if(
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stackTrace[j] < coffSym->Value &&
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stackTrace[j] >= lastSymbol->Value &&
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lastSymbol->Type == 0x20
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) {
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matchingStackSymbols[j] = lastSymbol;
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}
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}
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lastSymbol = coffSym;
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// Take into account any aux symbols
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i += coffSym->NumberOfAuxSymbols;
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coffSym += coffSym->NumberOfAuxSymbols;
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coffSym++;
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}
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for( i=0; i<stackTraceCount; i++ ) {
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if( matchingStackSymbols[i] == NULL ) {
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OUTS "%X = Undefined Symbol\n", stackTrace[i] );
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}
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else {
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char *symName =
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(char *)matchingStackSymbols[i]->N.Name.Short != 0 ?
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(char *)matchingStackSymbols[i]->N.ShortName :
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(char *)(stringTable + matchingStackSymbols[i]->N.Name.Long)
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;
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char args[30]={0,};
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char funcName[128]={0,};
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char *open = NULL;
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int numArgs = 0;
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if( skipAssert && strstr(symName,"assert") ) {
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continue;
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}
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// The function names are mangled, which tells us
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// what the arguments are. Unfortunatly, the name
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// demangler is not perfect (since I had to reverse
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// engineer it). So in cases when it fails, we
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// just print five arguments hoping that this is
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// sufficient.
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char *success = demangleMSDEVFuncName( symName, funcName, 128, args, 30, numArgs );
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if( strstr( symName, "mainCRTStartup" ) ) {
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break;
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}
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OUTS "%s(", funcName );
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if( success ) {
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// Name demangler succeeded. Print
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// out a trace of the arguments. For
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// pointer args, print out a small
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// memory dump of that pointer
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unsigned int *a = (unsigned int *)argBase[i+1];
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for( int j=0; j<numArgs; j++, a++ ) {
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try {
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OUTS "%s ", j==0?"":"," );
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switch( args[j] ) {
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case 'D': case 'E': case 'F':
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case 'G': case 'H': case 'I':
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if( *a >= 0x10000 ) {
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OUTS "0x%X", *a );
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}
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else {
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OUTS "%d", *a );
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}
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break;
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case 'M':
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OUTS "%f", *a );
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break;
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case 'N':
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// TODO
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break;
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case 'P':
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OUTS "PTR(0x%X)", *a );
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break;
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default:
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OUTS "?" );
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}
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}
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catch( ... ) { }
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}
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}
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else {
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// The name demanagler failed, so just
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// print 5 arguments under the theory that
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// it is better than nothing.
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OUTS "?? " );
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int *a = (int *)argBase[i+1];
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for( int j=0; j<5; j++, a++ ) {
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OUTS "%s 0x%X", j==0?"":",", *a );
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}
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}
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OUTS " )\n" );
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if( success ) {
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// Name mangler succeeded, go back and
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// print out a hex dump for each pointer.
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try {
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int *a = (int *)argBase[i+1];
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for( int j=0; j<numArgs; j++, a++ ) {
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if( args[j] == 'P' ) {
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unsigned char *ptr = (unsigned char *)*a;
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if( ptr >= (unsigned char *)baseAddress ) {
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for( int k=0; k<3; k++, ptr+=16 ) {
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OUTS " %X: ", ptr );
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for( int l=0; l<16; l++ ) OUTS "%02X ", ptr[l] );
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OUTS " " );
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for( l=0; l<16; l++ ) OUTS "%c", ptr[l]>=31&&ptr[l]<127?ptr[l]:'.' );
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OUTS "\n" );
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}
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}
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}
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}
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}
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catch( ... ) { }
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}
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}
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}
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CloseHandle( hFileMapping );
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CloseHandle( hFile );
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#else // WIN32
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// UNIX code
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OUTS "UNIX Stack Trace Currently unavailable\n" );
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#endif // WIN32
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return output;
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}
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#ifdef WIN32
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char *demangleMSDEVFuncName(
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char *mangledName,
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char funcName[], int funcNameMax,
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char args[], int maxArgs,
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int &numArgs
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) {
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// Print out arguments. This is a big pain in the ass
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// because the argument list needs to be parsed.
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// This fills in the funcName and args buffers.
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// Both of which need to pass in buffer sizes.
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// numArgs is filled out.
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// Returns a full string ready for printing or NULL on error
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// The args array is encoded as follows:
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// D=char, E=uchar, F=short, G=ushort, H=int, I=uint,
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// J=, K=, L=, M=float, N=double, O=, P=ptr, Q=, R=,
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// S=, T=, U=STRUCT, V=, W=, X=void, Y=, Z=...
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static char demangled[128] = {0,};
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memset( demangled, 0, 128 );
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numArgs = 0;
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char *atomicTypes[] = { "REF", "", "", "char", "uchar", "short",
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"ushort", "int", "uint", "", "", "",
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"float", "double", "", "PTR", "", "", "", "",
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"STRUCT", "", "", "void", "", "..."
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};
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int retType = 0, funcType;
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enum {sSTART,sNAME,sCLASSNAME,sFUNCYPE,sERROR,sRETTYPE,sSTRUCT,sARGS,sTYPE,sRETTYPEDONE,sARGSDONE,sEND};
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enum {ftFREEFUNC, ftMETHOD, ftVIRTUAL, ftSTATIC,};
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char name[128]={0,};
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char classname[128]={0,};
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int state = sSTART;
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int stateStack[30];
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int stateStackTop = 0;
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int lastType = 0;
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#define PUSHSTATE stateStack[stateStackTop++] = state;
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#define POPSTATE state = stateStack[--stateStackTop];
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char *p = mangledName;
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while( *p || state == sEND ) {
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switch( state ) {
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case sSTART:
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if( *p == '_' ) {
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strncpy( funcName, p, funcNameMax-1 );
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funcName[funcNameMax-1] = 0;
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return NULL;
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}
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if( *p == '?' ) state = sNAME;
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else state = sERROR;
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break;
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case sNAME:
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if( *p=='@' && *(p+1)=='@' ) {
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p++;
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state = sFUNCYPE;
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}
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else if( *p=='@' ) state = sCLASSNAME;
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else name[strlen(name)]=*p;
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break;
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case sCLASSNAME:
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if( *p == '@' && *(p+1)=='@' ) {
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p++;
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state = sFUNCYPE;
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}
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else classname[strlen(classname)]=*p;
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break;
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case sFUNCYPE:
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if( *p=='Y' ) funcType = ftFREEFUNC;
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if( *p=='Q' ) funcType = ftMETHOD;
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if( *p=='U' ) funcType = ftVIRTUAL;
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if( *p=='S' ) funcType = ftSTATIC;
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// Skip const, volatile, etc.
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p++;
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if( funcType == ftMETHOD || funcType == ftVIRTUAL ) {
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p++;// Some unknown parameter, mostly 'E'
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// Maybe it stands for "this"
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//args[numArgs++] = 'P';
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//if( numArgs >= maxArgs ) state = sERROR;
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}
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state = sRETTYPE;
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break;
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case sTYPE:
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if( *p == '?' ) {
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p++;
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if( *p != 'B' && *p != 'A' ) state = sERROR; // 'B' means const, 'A' means copy?
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break;
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}
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else if( *p == 'P' || *p == 'Q' || *p == 'A' ) {
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if(lastType==0) lastType='P';
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p++; // Read the modifier
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if( !(*p>='A' && *p<='C') ) state=sERROR;
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else {
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PUSHSTATE;
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}
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}
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else if( *p>='D' && *p<='O' || *p == 'X' ) {
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// Simple atomic type
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||
|
if(lastType==0) lastType=*p;
|
||
|
}
|
||
|
else if( *p == 'U' ) {
|
||
|
if(lastType==0) lastType=*p;
|
||
|
// A structure, gobble it up
|
||
|
while( *p++ != '@' );
|
||
|
}
|
||
|
else if( *p == 'Y' ) {
|
||
|
// An array length, gobble it up
|
||
|
do {
|
||
|
p++;
|
||
|
} while( *p >= '0' && *p <= '9' );
|
||
|
p--;
|
||
|
break;
|
||
|
}
|
||
|
if( stateStackTop > 0 ) POPSTATE;
|
||
|
break;
|
||
|
case sRETTYPE:
|
||
|
lastType = 0;
|
||
|
state = sRETTYPEDONE;
|
||
|
PUSHSTATE;
|
||
|
state = sTYPE;
|
||
|
p--;
|
||
|
break;
|
||
|
case sRETTYPEDONE:
|
||
|
retType = lastType;
|
||
|
state = sARGS;
|
||
|
p--;
|
||
|
break;
|
||
|
case sARGS:
|
||
|
if( *p=='@' ) state = sEND;
|
||
|
else if( *p=='Z' && *(p+1)!='Z' ) {
|
||
|
//argCount = 0;
|
||
|
state = sEND;
|
||
|
}
|
||
|
else if( *p=='Z' && *(p+1)=='Z' ) {
|
||
|
args[numArgs++] = 'Z';
|
||
|
if( numArgs >= maxArgs ) state = sERROR;
|
||
|
else state = sEND;
|
||
|
}
|
||
|
else {
|
||
|
lastType = 0;
|
||
|
state = sARGSDONE;
|
||
|
PUSHSTATE;
|
||
|
state = sTYPE;
|
||
|
p--;
|
||
|
}
|
||
|
break;
|
||
|
case sARGSDONE:
|
||
|
args[numArgs++] = lastType;
|
||
|
if( numArgs >= maxArgs ) state = sERROR;
|
||
|
else state = sARGS;
|
||
|
p--;
|
||
|
break;
|
||
|
case sEND: {
|
||
|
strcat( demangled, classname );
|
||
|
if( *classname ) strcat( demangled, "::" );
|
||
|
strcat( demangled, name );
|
||
|
strncpy( funcName, demangled, funcNameMax-1 );
|
||
|
funcName[funcNameMax-1] = 0;
|
||
|
*demangled = 0;
|
||
|
|
||
|
if((char)retType >= 'A')
|
||
|
{
|
||
|
strcat( demangled, atomicTypes[retType-'A'] );
|
||
|
strcat( demangled, " " );
|
||
|
strcat( demangled, classname );
|
||
|
if( *classname ) strcat( demangled, "::" );
|
||
|
strcat( demangled, name );
|
||
|
strcat( demangled, "(" );
|
||
|
for( int i=0; i<numArgs; i++ ) {
|
||
|
if( args[i] >= 'A' && args[i] <= 'Z' ) {
|
||
|
strcat( demangled, i==0?" ":", " );
|
||
|
strcat( demangled, atomicTypes[args[i]-'A'] );
|
||
|
}
|
||
|
}
|
||
|
strcat( demangled, " )" );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
strcpy(demangled, funcName);
|
||
|
}
|
||
|
|
||
|
goto stop;
|
||
|
}
|
||
|
|
||
|
case sERROR:
|
||
|
return NULL;
|
||
|
goto stop;
|
||
|
}
|
||
|
p++;
|
||
|
}
|
||
|
stop:;
|
||
|
return demangled;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
|
||
|
|
||
|
#ifdef REGRESSION
|
||
|
|
||
|
// This is test code for the name mangler parser
|
||
|
|
||
|
void main( int argc, char **argv ) {
|
||
|
void regressionTestDemangler();
|
||
|
}
|
||
|
|
||
|
void regressionTestDemangler() {
|
||
|
char *cases[] = {
|
||
|
"void oink( Oink * )", "?oink@@YAXPAUOink@@@Z", "void oink( PTR )",
|
||
|
"void oink( const int * )", "?oink@@YAXPBH@Z", "void oink( PTR )",
|
||
|
"void oink( int * const )", "?oink@@YAXQAH@Z", "void oink( PTR )",
|
||
|
"void oink( const int & )", "?oink@@YAXABH@Z", "void oink( PTR )",
|
||
|
"void oink( volatile int * )", "?oink@@YAXPCH@Z", "void oink( PTR )",
|
||
|
"void oink( int c[4][1] )", "?oink@@YAXQAY00H@Z", "void oink( PTR )",
|
||
|
"void oink( int c[4] )", "?oink@@YAXQAH@Z", "void oink( PTR )",
|
||
|
"void oink( )", "?oink@@YAXXZ", "void oink( void )",
|
||
|
"void Boink::oink()", "?oink@Boink@@QAEXXZ", "void Boink::oink( void )",
|
||
|
"void Boink::oink() const", "?oink@Boink@@QBEXXZ", "void Boink::oink( void )",
|
||
|
"void Boink::oink() volatile", "?oink@Boink@@QCEXXZ", "void Boink::oink( void )",
|
||
|
"virtual void Boink::oink()", "?oink@Boink@@UAEXXZ", "void Boink::oink( void )",
|
||
|
"static void Boink::oink()", "?oink@Boink@@SAXXZ", "void Boink::oink( void )",
|
||
|
"void oink( int c[4][2] )", "?oink@@YAXQAY01H@Z", "void oink( PTR )",
|
||
|
"void oink( int c[5][2] )", "?oink@@YAXQAY01H@Z", "void oink( PTR )",
|
||
|
"void oink( int c[5][2][1] )", "?oink@@YAXQAY110H@Z", "void oink( PTR )",
|
||
|
"void oink( char, char )", "?oink@@YAXDD@Z", "void oink( char, char )",
|
||
|
"void oink( Oink )", "?oink@@YAXUOink@@@Z", "void oink( STRUCT )",
|
||
|
"Boink oink( )", "?oink@@YA?AUBoink@@XZ", "STRUCT oink( void )",
|
||
|
"Boink *oink( )", "?oink@@YAPAUBoink@@XZ", "PTR oink( void )",
|
||
|
"void oink( int [] )", "?oink@@YAXQAH@Z", "void oink( PTR )",
|
||
|
"void oink( int, ... )", "?oink@@YAXHZZ", "void oink( int, ... )",
|
||
|
"const int oink( )", "?oink@@YA?BHXZ", "int oink( void )",
|
||
|
"void *oink( )", "?oink@@YAPAXXZ", "PTR oink( void )",
|
||
|
"int &oink( )", "?oink@@YAAAHXZ", "PTR oink( void )",
|
||
|
"void oink( int * )", "?oink@@YAXPAH@Z", "void oink( PTR )",
|
||
|
"void oink( int ** )", "?oink@@YAXPAPAH@Z", "void oink( PTR )",
|
||
|
"void oink( int & )", "?oink@@YAXAAH@Z", "void oink( PTR )",
|
||
|
"int oink( char *, char ** )", "?oink@@YAHPADPAPAD@Z", "int oink( PTR, PTR )",
|
||
|
"char oink( )", "?oink@@YADXZ", "char oink( void )",
|
||
|
"unsigned char oink( )", "?oink@@YAEXZ", "uchar oink( void )",
|
||
|
"short oink( )", "?oink@@YAFXZ", "short oink( void )",
|
||
|
"unsigned short oink( )", "?oink@@YAGXZ", "ushort oink( void )",
|
||
|
"int oink( )", "?oink@@YAHXZ", "int oink( void )",
|
||
|
"unsigned int oink( )", "?oink@@YAIXZ", "uint oink( void )",
|
||
|
"float oink( )", "?oink@@YAMXZ", "float oink( void )",
|
||
|
"double oink( )", "?oink@@YANXZ", "double oink( void )",
|
||
|
"void oink( char )", "?oink@@YAXD@Z", "void oink( char )",
|
||
|
"void oink( int )", "?oink@@YAXH@Z", "void oink( int )",
|
||
|
// TODO: function ptrs, operators
|
||
|
//"void oink( __int64 )", "?oink@@YAX_J@Z",
|
||
|
//"typedef void (*FPTR)();"
|
||
|
//"void oink( FPTR )", "?oink@@YAXP6AXXZ@Z",
|
||
|
//"typedef void (*FPTR)(int);"
|
||
|
//"void oink( FPTR )", "?oink@@YAXP6AXH@Z@Z",
|
||
|
//"int Boink::operator +(int a)", "??HBoink@@QAEHH@Z",
|
||
|
//"int Boink::operator -(int a)", "??GBoink@@QAEHH@Z",
|
||
|
//"Boink::operator char *()", "??BBoink@@QAEPADXZ",
|
||
|
};
|
||
|
|
||
|
int count = sizeof(cases)/sizeof(cases[0]);
|
||
|
for( int i=0; i<count; i+=3 ) {
|
||
|
char args[100];
|
||
|
int numArgs;
|
||
|
char *str = demangle( cases[i+1], "", 1, args, 100, numArgs );
|
||
|
printf( "%s = %s\nshould be:%s\n got:%s\n\n", cases[i], cases[i+1], cases[i+2], str );
|
||
|
if( strcmp( str, cases[i+2] ) ) {
|
||
|
printf( "Regression failed i=%d\n", i );
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
#endif
|