//*************************************************************************
// HandleInDebuggerFault()
//
//*************************************************************************
ULONG HandleInDebuggerFault(FRAME* ptr,ULONG address)
{
PEPROCESS tsk;
ENTER_FUNC();
DPRINT((0,"HandleInDebuggerFault(): ###### page fault @ %.8X while inside debugger, eip: %x\n",address, ptr->eip));
// fault in this page fault handler
if(bInPageFaultHandler)
{
DPRINT((0,"HandleInDebuggerFault(): ###### page fault @ %.8X while in page fault handler\n",address));
DPRINT((0,"!!! machine is halted !!!\n"));
__asm__ __volatile__ ("hlt");
LEAVE_FUNC();
return 0;
}
bInPageFaultHandler = TRUE;
// when we come here from DebuggerShell() we live on a different stack
// so the current task is different as well
tsk = IoGetCurrentProcess();
DPRINT((0,"%.8X (%.4X:%.8X %.8X %s %s %s task=%.8X )\n",
address,
ptr->cs,
ptr->eip,
ptr->eflags,
(ptr->error_code&1)?"PLP":"NP",
(ptr->error_code&2)?"WRITE":"READ",
(ptr->error_code&4)?"USER-MODE":"KERNEL-MODE",
(ULONG)tsk));
if(!bInPrintk)
{
DPRINT((0,"HandleInDebuggerFault(): unexpected pagefault in command handler!\n",address));
}
else
{
DPRINT((0,"HandleInDebuggerFault(): unexpected pagefault in command handler while in PrintkCallback()!\n",address));
}
if(tsk)
{
PULONG pPGD;
PULONG pPTE;
pPGD = ADDR_TO_PDE(address);
DPRINT((0,"PGD for %.8X @ %.8X = %.8X\n",address,(ULONG)pPGD,(ULONG)(*pPGD) ));
if(pPGD && (*pPGD)&_PAGE_PRESENT)
{
// not large page
if(!((*pPGD)&_PAGE_4M))
{
pPTE = ADDR_TO_PTE(address);
if(pPTE)
{
DPRINT((0,"PTE for %.8X @ %.8X = %.8X\n",address,(ULONG)pPTE,(ULONG)(*pPTE) ));
}
}
}
}
IntelStackWalk(ptr->eip,CurrentEBP,ulRealStackPtr);
DPRINT((0,"!!! machine is halted !!!\n"));
__asm__ __volatile__ ("hlt");
LEAVE_FUNC();
return 2;
}
static
BOOL StackBackTrace(HANDLE hProcess, HANDLE hThread, PCONTEXT pContext)
{
STACKFRAME StackFrame;
HMODULE hModule = NULL;
TCHAR szModule[MAX_PATH];
#ifdef HAVE_BFD
bfd *abfd = NULL;
asymbol **syms = NULL; // The symbol table.
long symcount = 0; // Number of symbols in `syms'.
#endif /* HAVE_BFD */
assert(!bSymInitialized);
j_SymSetOptions(/* SYMOPT_UNDNAME | */ SYMOPT_LOAD_LINES);
if(j_SymInitialize(hProcess, NULL, TRUE))
bSymInitialized = TRUE;
memset( &StackFrame, 0, sizeof(StackFrame) );
// Initialize the STACKFRAME structure for the first call. This is only
// necessary for Intel CPUs, and isn't mentioned in the documentation.
StackFrame.AddrPC.Offset = pContext->Eip;
StackFrame.AddrPC.Mode = AddrModeFlat;
StackFrame.AddrStack.Offset = pContext->Esp;
StackFrame.AddrStack.Mode = AddrModeFlat;
StackFrame.AddrFrame.Offset = pContext->Ebp;
StackFrame.AddrFrame.Mode = AddrModeFlat;
rprintf( _T("Call stack:\r\n") );
if(0)
rprintf( _T("AddrPC AddrReturn AddrFrame AddrStack\r\n") );
while ( 1 )
{
BOOL bSuccess = FALSE;
#ifdef HAVE_BFD
const HMODULE hPrevModule = hModule;
#endif /* HAVE_BFD */
TCHAR szSymName[512] = _T("");
TCHAR szFileName[MAX_PATH] = _T("");
DWORD LineNumber = 0;
if(bSymInitialized)
{
if(!j_StackWalk(
IMAGE_FILE_MACHINE_I386,
hProcess,
hThread,
&StackFrame,
pContext,
NULL,
j_SymFunctionTableAccess,
j_SymGetModuleBase,
NULL
)
)
break;
}
else
{
if(!IntelStackWalk(
IMAGE_FILE_MACHINE_I386,
hProcess,
hThread,
&StackFrame,
pContext,
NULL,
NULL,
NULL,
NULL
)
)
break;
}
// Basic sanity check to make sure the frame is OK. Bail if not.
if ( 0 == StackFrame.AddrFrame.Offset )
break;
if(0)
{
rprintf(
_T("%08lX %08lX %08lX %08lX\r\n"),
StackFrame.AddrPC.Offset,
StackFrame.AddrReturn.Offset,
StackFrame.AddrFrame.Offset,
StackFrame.AddrStack.Offset
);
rprintf(
_T("%08lX %08lX %08lX %08lX\r\n"),
StackFrame.Params[0],
StackFrame.Params[1],
StackFrame.Params[2],
StackFrame.Params[3]
);
}
rprintf( _T("%08lX"), StackFrame.AddrPC.Offset);
if((hModule = (HMODULE) GetModuleBase(StackFrame.AddrPC.Offset)) && GetModuleFileName(hModule, szModule, sizeof(szModule)))
{
#ifndef HAVE_BFD
rprintf( _T(" %s:ModulBase %08lX"), szModule, hModule);
#else /* HAVE_BFD */
rprintf( _T(" %s:%08lX"), szModule, StackFrame.AddrPC.Offset);
if(hModule != hPrevModule)
{
if(syms)
{
GlobalFree(syms);
syms = NULL;
symcount = 0;
}
if(abfd)
bfd_close(abfd);
if((abfd = bfd_openr (szModule, NULL)))
if(bfd_check_format(abfd, bfd_object))
{
bfd_vma adjust_section_vma = 0;
/* If we are adjusting section VMA's, change them all now. Changing
the BFD information is a hack. However, we must do it, or
bfd_find_nearest_line will not do the right thing. */
if ((adjust_section_vma = (bfd_vma) hModule - pe_data(abfd)->pe_opthdr.ImageBase))
{
asection *s;
for (s = abfd->sections; s != NULL; s = s->next)
{
s->vma += adjust_section_vma;
s->lma += adjust_section_vma;
}
}
if(bfd_get_file_flags(abfd) & HAS_SYMS)
/* Read in the symbol table. */
slurp_symtab(abfd, &syms, &symcount);
}
}
if(!bSuccess && abfd && syms && symcount)
if((bSuccess = BfdGetSymFromAddr(abfd, syms, symcount, StackFrame.AddrPC.Offset, szSymName, 512)))
{
/*
framepointer = StackFrame.AddrFrame.Offset;
hprocess = hProcess;
*/
BfdDemangleSymName(szSymName, szSymName, 512);
rprintf( _T(" %s"), szSymName);
if(BfdGetLineFromAddr(abfd, syms, symcount, StackFrame.AddrPC.Offset, szFileName, MAX_PATH, &LineNumber))
rprintf( _T(" %s:%ld"), szFileName, LineNumber);
}
#endif /* HAVE_BFD */
if(!bSuccess && bSymInitialized)
if((bSuccess = ImagehlpGetSymFromAddr(hProcess, StackFrame.AddrPC.Offset, szSymName, 512)))
{
rprintf( _T(" %s"), szSymName);
ImagehlpDemangleSymName(szSymName, szSymName, 512);
if(ImagehlpGetLineFromAddr(hProcess, StackFrame.AddrPC.Offset, szFileName, MAX_PATH, &LineNumber))
rprintf( _T(" %s:%ld"), szFileName, LineNumber);
}
if(!bSuccess)
if((bSuccess = PEGetSymFromAddr(hProcess, StackFrame.AddrPC.Offset, szSymName, 512)))
rprintf( _T(" %s"), szSymName);
}
rprintf(_T("\r\n"));
}
#ifdef HAVE_BFD
if(syms)
{
GlobalFree(syms);
syms = NULL;
symcount = 0;
}
if(abfd)
bfd_close(abfd);
#endif /* HAVE_BFD */
if(bSymInitialized)
{
if(!j_SymCleanup(hProcess))
assert(0);
bSymInitialized = FALSE;
}
return TRUE;
}
