void stacktrace(){
unsigned long framePointer;
unsigned long savedEIP;
unsigned long lowPC;
unsigned long highPC;
int functionFound = 0;
int functionCount = 0;
char * functionName;
char * fileName;
Dwarf_Die functionDie;
// Find our current Function
functionDie = dwarf_get_next_function(compilation_unit->root_die,compilation_unit);
savedEIP = findAddress(CURRENT_EIP);
while(!functionFound){
lowPC = dwarf_function_starting_address(functionDie,compilation_unit);
highPC = dwarf_function_ending_address(functionDie,compilation_unit);
if((savedEIP >= lowPC) && (savedEIP < highPC)){
fileName = dwarf_get_name(compilation_unit->root_die,compilation_unit);
functionName = dwarf_get_name(functionDie,compilation_unit);
printf("#%d %s(",functionCount,functionName);
printPassedVariable(functionDie);
printf(") at %s:%d\n",fileName,findLineNumber(savedEIP));
functionFound = 1;
++functionCount;
}
else
functionDie = dwarf_get_next_function(functionDie,compilation_unit);
}
functionFound = 0;
framePointer = findAddress(FRAME_POINTER);
while(ptrace(PTRACE_PEEKTEXT,child,framePointer,NULL) != 0){
savedEIP = ptrace(PTRACE_PEEKTEXT,child,framePointer+4,NULL); // Give us our old EBP
framePointer = ptrace(PTRACE_PEEKTEXT,child,framePointer,NULL);
// Now look for function DIE
functionDie = dwarf_get_next_function(compilation_unit->root_die,compilation_unit);
while(!functionFound){
lowPC = dwarf_function_starting_address(functionDie,compilation_unit);
highPC = dwarf_function_ending_address(functionDie,compilation_unit);
if((savedEIP >= lowPC) && (savedEIP < highPC)){
fileName = dwarf_get_name(compilation_unit->root_die,compilation_unit);
functionName = dwarf_get_name(functionDie,compilation_unit);
printf("#%d %s() at %s:%d\n",functionCount,functionName,fileName,findLineNumber(savedEIP));
functionFound = 1;
}
else
functionDie = dwarf_get_next_function(functionDie,compilation_unit);
}
functionFound = 0;
}
}
static void tagVaWarn(struct htmlPage *page, struct htmlTag *tag, char *format,
va_list args)
/* Print warning message and some context of tag. */
{
char context[80];
strncpy(context, tag->start, sizeof(context));
context[sizeof(context)-1] = 0;
warn("Error near line %d of %s:\n %s", findLineNumber(page->htmlText, tag->start),
page->url, context);
vaWarn(format, args);
}
