You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
719 lines
26 KiB
719 lines
26 KiB
//----------------------------------------------------------------------------
|
|
//
|
|
// VDM debugging support.
|
|
//
|
|
// Copyright (C) Microsoft Corporation, 1997-2002.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
#include "ntsdp.hpp"
|
|
|
|
BOOL fVDMInitDone;
|
|
BOOL fVDMActive;
|
|
VDMPROCESSEXCEPTIONPROC pfnVDMProcessException;
|
|
VDMGETTHREADSELECTORENTRYPROC pfnVDMGetThreadSelectorEntry;
|
|
VDMGETPOINTERPROC pfnVDMGetPointer;
|
|
VDMGETCONTEXTPROC pfnVDMGetContext;
|
|
VDMSETCONTEXTPROC pfnVDMSetContext;
|
|
VDMGETSELECTORMODULEPROC pfnVDMGetSelectorModule;
|
|
|
|
#define SEGTYPE_AVAILABLE 0
|
|
#define SEGTYPE_V86 1
|
|
#define SEGTYPE_PROT 2
|
|
|
|
#define MAXSEGENTRY 1024
|
|
|
|
SEGENTRY segtable[MAXSEGENTRY];
|
|
|
|
|
|
|
|
VOID VDMRegCmd(
|
|
LPSTR achInput,
|
|
X86_NT5_CONTEXT *pvc
|
|
)
|
|
{
|
|
DWORD dwVal;
|
|
|
|
if ( _stricmp(achInput,"rp") == 0 )
|
|
{
|
|
g_Target->m_Machines[MACHIDX_I386]->
|
|
OutputAll(g_Target->m_Machines[MACHIDX_I386]->m_AllMask,
|
|
DEBUG_OUTPUT_NORMAL);
|
|
return;
|
|
}
|
|
|
|
if (achInput[1] != 'e')
|
|
{
|
|
dprintf("VDM R: can only operate on 32-bit registers\n");
|
|
return;
|
|
}
|
|
|
|
if (strlen(achInput) < 6) {
|
|
dprintf("VDM R: Missing value\n");
|
|
return;
|
|
}
|
|
|
|
dwVal = strtoul(&achInput[5], NULL, 16);
|
|
|
|
if ( _strnicmp(&achInput[2],"ax", 2) == 0 ) {
|
|
pvc->Eax = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"bx", 2) == 0 ) {
|
|
pvc->Ebx = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"cx", 2) == 0 ) {
|
|
pvc->Ecx = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"dx", 2) == 0 ) {
|
|
pvc->Edx = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"si", 2) == 0 ) {
|
|
pvc->Esi = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"di", 2) == 0 ) {
|
|
pvc->Edi = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"ip", 2) == 0 ) {
|
|
pvc->Eip = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"sp", 2) == 0 ) {
|
|
pvc->Esp = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"bp", 2) == 0 ) {
|
|
pvc->Ebp = dwVal;
|
|
} else if ( _strnicmp(&achInput[2],"fl", 2) == 0 ) {
|
|
pvc->EFlags = dwVal;
|
|
} else {
|
|
dprintf("Invalid register\n");
|
|
return;
|
|
}
|
|
|
|
dprintf("%.8X will be flushed to '%3.3s'. Use 'rp' to display pending values\n",
|
|
dwVal,
|
|
&achInput[1]);
|
|
}
|
|
|
|
void
|
|
DebugEvent64To(LPDEBUG_EVENT64 Event64,
|
|
LPDEBUG_EVENT Event)
|
|
{
|
|
Event->dwDebugEventCode = Event64->dwDebugEventCode;
|
|
Event->dwProcessId = Event64->dwProcessId;
|
|
Event->dwThreadId = Event64->dwThreadId;
|
|
|
|
switch(Event64->dwDebugEventCode)
|
|
{
|
|
case EXCEPTION_DEBUG_EVENT:
|
|
ExceptionRecord64To(&Event64->u.Exception.ExceptionRecord,
|
|
&Event->u.Exception.ExceptionRecord);
|
|
Event->u.Exception.dwFirstChance =
|
|
Event64->u.Exception.dwFirstChance;
|
|
break;
|
|
|
|
case CREATE_THREAD_DEBUG_EVENT:
|
|
Event->u.CreateThread.hThread =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateThread.hThread);
|
|
Event->u.CreateThread.lpThreadLocalBase =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateThread.lpThreadLocalBase);
|
|
Event->u.CreateThread.lpStartAddress =
|
|
(LPTHREAD_START_ROUTINE)(ULONG_PTR)(Event64->u.CreateThread.lpStartAddress);
|
|
break;
|
|
|
|
case CREATE_PROCESS_DEBUG_EVENT:
|
|
Event->u.CreateProcessInfo.hFile =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.hFile);
|
|
Event->u.CreateProcessInfo.hProcess =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.hProcess);
|
|
Event->u.CreateProcessInfo.hThread =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.hThread);
|
|
Event->u.CreateProcessInfo.lpBaseOfImage =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.lpBaseOfImage);
|
|
Event->u.CreateProcessInfo.dwDebugInfoFileOffset =
|
|
Event64->u.CreateProcessInfo.dwDebugInfoFileOffset;
|
|
Event->u.CreateProcessInfo.nDebugInfoSize =
|
|
Event64->u.CreateProcessInfo.nDebugInfoSize;
|
|
Event->u.CreateProcessInfo.lpThreadLocalBase =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.lpThreadLocalBase);
|
|
Event->u.CreateProcessInfo.lpStartAddress =
|
|
(LPTHREAD_START_ROUTINE)(ULONG_PTR)(Event64->u.CreateProcessInfo.lpStartAddress);
|
|
Event->u.CreateProcessInfo.lpImageName =
|
|
(PVOID)(ULONG_PTR)(Event64->u.CreateProcessInfo.lpImageName);
|
|
Event->u.CreateProcessInfo.fUnicode =
|
|
Event64->u.CreateProcessInfo.fUnicode;
|
|
break;
|
|
|
|
case EXIT_THREAD_DEBUG_EVENT:
|
|
Event->u.ExitThread.dwExitCode =
|
|
Event64->u.ExitThread.dwExitCode;
|
|
break;
|
|
|
|
case EXIT_PROCESS_DEBUG_EVENT:
|
|
Event->u.ExitProcess.dwExitCode =
|
|
Event64->u.ExitProcess.dwExitCode;
|
|
break;
|
|
|
|
case LOAD_DLL_DEBUG_EVENT:
|
|
Event->u.LoadDll.hFile =
|
|
(PVOID)(ULONG_PTR)(Event64->u.LoadDll.hFile);
|
|
Event->u.LoadDll.lpBaseOfDll =
|
|
(PVOID)(ULONG_PTR)(Event64->u.LoadDll.lpBaseOfDll);
|
|
Event->u.LoadDll.dwDebugInfoFileOffset =
|
|
Event64->u.LoadDll.dwDebugInfoFileOffset;
|
|
Event->u.LoadDll.nDebugInfoSize =
|
|
Event64->u.LoadDll.nDebugInfoSize;
|
|
Event->u.LoadDll.lpImageName =
|
|
(PVOID)(ULONG_PTR)(Event64->u.LoadDll.lpImageName);
|
|
Event->u.LoadDll.fUnicode =
|
|
Event64->u.LoadDll.fUnicode;
|
|
break;
|
|
|
|
case UNLOAD_DLL_DEBUG_EVENT:
|
|
Event->u.UnloadDll.lpBaseOfDll =
|
|
(PVOID)(ULONG_PTR)(Event64->u.UnloadDll.lpBaseOfDll);
|
|
break;
|
|
|
|
case OUTPUT_DEBUG_STRING_EVENT:
|
|
Event->u.DebugString.lpDebugStringData =
|
|
(LPSTR)(ULONG_PTR)(Event64->u.DebugString.lpDebugStringData);
|
|
Event->u.DebugString.fUnicode =
|
|
Event64->u.DebugString.fUnicode;
|
|
Event->u.DebugString.nDebugStringLength =
|
|
Event64->u.DebugString.nDebugStringLength;
|
|
break;
|
|
|
|
case RIP_EVENT:
|
|
Event->u.RipInfo.dwError =
|
|
Event64->u.RipInfo.dwError;
|
|
Event->u.RipInfo.dwType =
|
|
Event64->u.RipInfo.dwType;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ULONG
|
|
VDMEvent(DEBUG_EVENT64* pDebugEvent)
|
|
/*
|
|
|
|
returns - 0, if exception not handled
|
|
STATUS_VDM_EVENT, if exception handled
|
|
otherwise, the return value is the translated event status,
|
|
for example STATUS_BREAKPOINT
|
|
|
|
*/
|
|
{
|
|
LPSTR Str;
|
|
LPSTR pFileName;
|
|
BOOL b;
|
|
ULONG lpNumberOfBytesRead;
|
|
UINT_PTR address;
|
|
PULONG_PTR lpdw;
|
|
int segslot;
|
|
int mode;
|
|
BOOL fData;
|
|
WORD selector;
|
|
WORD segment;
|
|
WORD newselect;
|
|
BOOL fStop;
|
|
DWORD ImgLen;
|
|
ULONG ulRet;
|
|
BOOL fNeedSegTableEdit;
|
|
BOOL fNeedInteractive;
|
|
BOOL fVerbose;
|
|
CHAR achInput[_MAX_PATH];
|
|
BOOL fProcess;
|
|
SEGMENT_NOTE se;
|
|
IMAGE_NOTE im;
|
|
BOOL bProtectMode;
|
|
WORD EventFlags;
|
|
|
|
ulRet = VDMEVENT_HANDLED;
|
|
|
|
if (!fVDMInitDone) {
|
|
fVDMInitDone = TRUE;
|
|
|
|
HINSTANCE hmodVDM = NULL;
|
|
const char* c_szVDMFailed = NULL;
|
|
|
|
fVDMActive = (
|
|
(hmodVDM = LoadLibrary("VDMDBG.DLL")) &&
|
|
(pfnVDMProcessException = (VDMPROCESSEXCEPTIONPROC)
|
|
GetProcAddress(hmodVDM, c_szVDMFailed = "VDMProcessException")
|
|
) &&
|
|
(pfnVDMGetPointer = (VDMGETPOINTERPROC)
|
|
GetProcAddress(hmodVDM, c_szVDMFailed = "VDMGetPointer")
|
|
) &&
|
|
(pfnVDMGetThreadSelectorEntry = (VDMGETTHREADSELECTORENTRYPROC)
|
|
GetProcAddress(hmodVDM, c_szVDMFailed = "VDMGetThreadSelectorEntry")
|
|
) &&
|
|
(pfnVDMGetContext = (VDMGETCONTEXTPROC)
|
|
GetProcAddress(hmodVDM, c_szVDMFailed = "VDMGetContext")
|
|
) &&
|
|
(pfnVDMSetContext = (VDMSETCONTEXTPROC)
|
|
GetProcAddress( hmodVDM, c_szVDMFailed = "VDMSetContext")
|
|
) &&
|
|
(pfnVDMGetSelectorModule = (VDMGETSELECTORMODULEPROC)
|
|
GetProcAddress( hmodVDM, c_szVDMFailed = "VDMGetSelectorModule")
|
|
)
|
|
); // fVDMActive
|
|
|
|
if (!fVDMActive) { // display error on first time...
|
|
if (!hmodVDM) {
|
|
dprintf("LoadLibrary(VDMDBG.DLL) failed\n");
|
|
}
|
|
else if (c_szVDMFailed && *c_szVDMFailed) { // is valid printable string
|
|
dprintf("%s can not be found in VDMDBG.DLL\n", c_szVDMFailed);
|
|
}
|
|
else {
|
|
dprintf("Unknown failure while initializing VDMDBG.DLL\n");
|
|
} // iff
|
|
} // if
|
|
} // if
|
|
|
|
if (!fVDMActive) return VDMEVENT_NOT_HANDLED;
|
|
|
|
DEBUG_EVENT Event;
|
|
DebugEvent64To(pDebugEvent, &Event);
|
|
lpdw = &(Event.u.Exception.ExceptionRecord.ExceptionInformation[0]);
|
|
|
|
fProcess = (*pfnVDMProcessException)(&Event);
|
|
|
|
fNeedSegTableEdit = FALSE;
|
|
fNeedInteractive = FALSE;
|
|
fVerbose = FALSE;
|
|
|
|
mode = LOWORD(lpdw[0]);
|
|
EventFlags = HIWORD(lpdw[0]);
|
|
|
|
bProtectMode = (BOOL) (EventFlags & VDMEVENT_PE);
|
|
|
|
// Has the caller explicitly asked for interaction?
|
|
if (EventFlags & VDMEVENT_NEEDS_INTERACTIVE) {
|
|
fNeedInteractive = TRUE;
|
|
}
|
|
if (EventFlags & VDMEVENT_VERBOSE) {
|
|
fVerbose = TRUE;
|
|
}
|
|
|
|
switch( mode ) {
|
|
case DBG_SEGLOAD:
|
|
case DBG_SEGMOVE:
|
|
case DBG_SEGFREE:
|
|
case DBG_MODLOAD:
|
|
case DBG_MODFREE:
|
|
address = lpdw[2];
|
|
|
|
b = g_Target->ReadVirtual(g_Process, EXTEND64(address),
|
|
&se, sizeof(se),
|
|
&lpNumberOfBytesRead ) == S_OK;
|
|
if ( !b || lpNumberOfBytesRead != sizeof(se) )
|
|
{
|
|
return( VDMEVENT_NOT_HANDLED );
|
|
}
|
|
break;
|
|
case DBG_DLLSTART:
|
|
case DBG_DLLSTOP:
|
|
case DBG_TASKSTART:
|
|
case DBG_TASKSTOP:
|
|
address = lpdw[2];
|
|
|
|
b = g_Target->ReadVirtual(g_Process, EXTEND64(address),
|
|
&im, sizeof(im),
|
|
&lpNumberOfBytesRead ) == S_OK;
|
|
if ( !b || lpNumberOfBytesRead != sizeof(im) )
|
|
{
|
|
return( VDMEVENT_NOT_HANDLED );
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch( mode ) {
|
|
default:
|
|
ulRet = VDMEVENT_NOT_HANDLED;
|
|
break;
|
|
|
|
case DBG_SEGLOAD:
|
|
fNeedSegTableEdit = TRUE;
|
|
|
|
selector = se.Selector1;
|
|
segment = se.Segment;
|
|
fData = (BOOL)se.Type;
|
|
|
|
segslot = 0;
|
|
while ( segslot < MAXSEGENTRY ) {
|
|
if ( segtable[segslot].type != SEGTYPE_AVAILABLE ) {
|
|
if ( _stricmp(segtable[segslot].path_name, se.FileName) == 0 ) {
|
|
break;
|
|
}
|
|
}
|
|
segslot++;
|
|
}
|
|
|
|
if ( segslot == MAXSEGENTRY ) {
|
|
if ( strlen(se.FileName) != 0 ) {
|
|
dprintf("Loading [%s]\n", se.FileName );
|
|
}
|
|
}
|
|
|
|
if (fVerbose) {
|
|
dprintf("VDM SegLoad: %s(%d) %s => %x\n",
|
|
se.FileName,
|
|
segment,
|
|
fData ? "Data" : "Code",
|
|
selector);
|
|
}
|
|
break;
|
|
|
|
case DBG_SEGMOVE:
|
|
fNeedSegTableEdit = TRUE;
|
|
segment = se.Segment;
|
|
selector = se.Selector1;
|
|
newselect = se.Selector2;
|
|
if ( newselect == 0 ) {
|
|
mode = DBG_SEGFREE;
|
|
} else if (segment > 1) {
|
|
//
|
|
// real mode module is getting split up into different
|
|
// segments, so create a new segtable entry
|
|
//
|
|
segslot = 0;
|
|
while ( segslot < MAXSEGENTRY ) {
|
|
if (( segtable[segslot].type != SEGTYPE_AVAILABLE ) &&
|
|
( segtable[segslot].selector == selector )) {
|
|
mode = DBG_MODLOAD;
|
|
segment--; //make it zero-based
|
|
selector = newselect;
|
|
pFileName = segtable[segslot].path_name;
|
|
// Don't have the image length here so
|
|
// just choose one.
|
|
ImgLen = segtable[segslot].ImgLen;
|
|
break;
|
|
}
|
|
segslot++;
|
|
}
|
|
}
|
|
|
|
if (fVerbose) {
|
|
dprintf("VDM SegMove: (%d) %x => %x\n",
|
|
segment, selector, newselect);
|
|
}
|
|
break;
|
|
|
|
case DBG_SEGFREE:
|
|
fNeedSegTableEdit = TRUE;
|
|
selector = se.Selector1;
|
|
if (fVerbose) {
|
|
dprintf("VDM SegFree: %x\n",selector);
|
|
}
|
|
break;
|
|
|
|
case DBG_MODFREE:
|
|
fNeedSegTableEdit = TRUE;
|
|
|
|
if ( strlen(se.FileName) != 0 ) {
|
|
dprintf("Freeing [%s]\n", se.FileName );
|
|
} else if (fVerbose) {
|
|
dprintf("VDM ModFree: unknown module\n");
|
|
}
|
|
break;
|
|
|
|
case DBG_MODLOAD:
|
|
fNeedSegTableEdit = TRUE;
|
|
selector = se.Selector1;
|
|
ImgLen = se.Length;
|
|
segment = 0;
|
|
pFileName = se.FileName;
|
|
|
|
segslot = 0;
|
|
while ( segslot < MAXSEGENTRY ) {
|
|
if ( segtable[segslot].type != SEGTYPE_AVAILABLE ) {
|
|
if ( _stricmp(segtable[segslot].path_name, se.FileName) == 0 ) {
|
|
break;
|
|
}
|
|
}
|
|
segslot++;
|
|
}
|
|
if ( segslot == MAXSEGENTRY ) {
|
|
if ( strlen(se.FileName) != 0 ) {
|
|
dprintf("Loading [%s]\n", se.FileName );
|
|
}
|
|
}
|
|
if (fVerbose) {
|
|
dprintf("VDM ModLoad: %s => %x, len=%x\n",
|
|
se.FileName,
|
|
selector,
|
|
ImgLen);
|
|
}
|
|
break;
|
|
|
|
case DBG_SINGLESTEP:
|
|
if (g_Target->m_MachineType == IMAGE_FILE_MACHINE_I386)
|
|
{
|
|
fNeedInteractive = FALSE;
|
|
ulRet = STATUS_SINGLE_STEP;
|
|
}
|
|
else
|
|
{
|
|
fNeedInteractive = TRUE;
|
|
}
|
|
break;
|
|
|
|
case DBG_BREAK:
|
|
if (g_Target->m_MachineType == IMAGE_FILE_MACHINE_I386)
|
|
{
|
|
fNeedInteractive = FALSE;
|
|
ulRet = STATUS_BREAKPOINT;
|
|
}
|
|
else
|
|
{
|
|
fNeedInteractive = TRUE;
|
|
}
|
|
break;
|
|
|
|
case DBG_GPFAULT:
|
|
dprintf(" GP Fault in VDM\n");
|
|
if (g_Target->m_MachineType == IMAGE_FILE_MACHINE_I386) {
|
|
fNeedInteractive = FALSE;
|
|
ulRet = STATUS_ACCESS_VIOLATION;
|
|
} else {
|
|
fNeedInteractive = TRUE;
|
|
}
|
|
break;
|
|
case DBG_GPFAULT2:
|
|
dprintf("GP Fault in VDM\n");
|
|
dprintf("!!! second chance !!!\n");
|
|
fNeedInteractive = TRUE;
|
|
break;
|
|
|
|
case DBG_INSTRFAULT:
|
|
dprintf("invalid opcode fault in VDM\n");
|
|
fNeedInteractive = TRUE;
|
|
break;
|
|
|
|
case DBG_DIVOVERFLOW:
|
|
dprintf("divide overflow in VDM\n");
|
|
fNeedInteractive = TRUE;
|
|
break;
|
|
|
|
case DBG_STACKFAULT:
|
|
dprintf("stack fault in VDM\n");
|
|
if (g_Target->m_MachineType == IMAGE_FILE_MACHINE_I386) {
|
|
fNeedInteractive = FALSE;
|
|
ulRet = STATUS_ACCESS_VIOLATION;
|
|
} else {
|
|
fNeedInteractive = TRUE;
|
|
}
|
|
break;
|
|
case DBG_TASKSTART:
|
|
if ( fNeedInteractive || fVerbose ) {
|
|
dprintf("VDM Start Task <%s:%s>\n",
|
|
im.Module,
|
|
im.FileName );
|
|
}
|
|
break;
|
|
case DBG_DLLSTART:
|
|
if ( fNeedInteractive || fVerbose ) {
|
|
dprintf("VDM Start Dll <%s:%s>\n", im.Module, im.FileName );
|
|
}
|
|
break;
|
|
case DBG_TASKSTOP:
|
|
fNeedInteractive = FALSE;
|
|
break;
|
|
case DBG_DLLSTOP:
|
|
fNeedInteractive = FALSE;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
** Temporary code to emulate a 16-bit debugger. Eventually I will make
|
|
** NTSD understand these events and call ProcessStateChange to allow
|
|
** real 16-bit debugging and other activities on the other 32-bit threads.
|
|
** -BobDay
|
|
*/
|
|
if ( fNeedInteractive ) {
|
|
char text[MAX_DISASM_LEN];
|
|
char path[128];
|
|
UINT cSeg;
|
|
ADDR addr;
|
|
X86_NT5_CONTEXT vc;
|
|
|
|
g_Target->m_Machines[MACHIDX_I386]->
|
|
m_Context.X86Nt5Context.ContextFlags = VDMCONTEXT_FULL;
|
|
|
|
(*pfnVDMGetContext)(OS_HANDLE(g_EventProcess->m_SysHandle),
|
|
OS_HANDLE(g_EventThread->m_Handle),
|
|
(LPVDMCONTEXT)&g_Target->
|
|
m_Machines[MACHIDX_I386]->m_Context);
|
|
|
|
g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context.EFlags &= ~V86FLAGS_TRACE;
|
|
vc = g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context;
|
|
|
|
// Dump a simulated context
|
|
g_Target->m_Machines[MACHIDX_I386]->OutputAll(g_Target->m_Machines[MACHIDX_I386]->m_AllMask,
|
|
DEBUG_OUTPUT_PROMPT_REGISTERS);
|
|
b = (*pfnVDMGetSelectorModule)(OS_HANDLE(g_EventProcess->m_SysHandle),
|
|
OS_HANDLE(g_EventThread->m_Handle),
|
|
(WORD)g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context.SegCs, &cSeg, text, 128, path, 128 );
|
|
|
|
if ( b ) {
|
|
dprintf("%s:%d!%04x:\n", text, cSeg, (WORD)g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context.Eip );
|
|
}
|
|
addr.seg = (WORD)g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context.SegCs;
|
|
addr.off = g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context.Eip;
|
|
if ( !bProtectMode ) {
|
|
addr.type = ADDR_V86 | FLAT_COMPUTED;
|
|
addr.flat = (*pfnVDMGetPointer)(
|
|
OS_HANDLE(g_EventProcess->m_SysHandle),
|
|
OS_HANDLE(g_EventThread->m_Handle),
|
|
addr.seg,
|
|
(ULONG)addr.off,
|
|
FALSE
|
|
);
|
|
} else {
|
|
addr.type = ADDR_16 | FLAT_COMPUTED;
|
|
addr.flat = (*pfnVDMGetPointer)(
|
|
OS_HANDLE(g_EventProcess->m_SysHandle),
|
|
OS_HANDLE(g_EventThread->m_Handle),
|
|
addr.seg,
|
|
(ULONG)addr.off,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
if ( Flat(addr) == 0 ) {
|
|
dprintf("Unable to disassemble failing code\n");
|
|
} else {
|
|
g_Target->m_Machines[MACHIDX_I386]->
|
|
Disassemble( g_Process, &addr, text, TRUE );
|
|
dprintf("%s", text );
|
|
}
|
|
|
|
AddExtensionDll("vdmexts", TRUE, g_Target, NULL);
|
|
|
|
while ( TRUE ) {
|
|
GetInput("VDM>", achInput, sizeof(achInput),
|
|
GETIN_LOG_INPUT_LINE);
|
|
|
|
if ( _stricmp(achInput,"gh") == 0 || _stricmp(achInput,"g") == 0 ) {
|
|
ulRet = VDMEVENT_HANDLED;
|
|
break;
|
|
}
|
|
if ( _stricmp(achInput,"gn") == 0 ) {
|
|
ulRet = VDMEVENT_NOT_HANDLED;
|
|
break;
|
|
}
|
|
if ( _stricmp(achInput, "t") == 0 ) {
|
|
ulRet = VDMEVENT_HANDLED;
|
|
vc.EFlags |= V86FLAGS_TRACE;
|
|
break;
|
|
}
|
|
|
|
if ((achInput[0] == 'r') && (_stricmp(achInput, "r") != 0)) {
|
|
VDMRegCmd(achInput, &vc);
|
|
g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context = vc;
|
|
continue;
|
|
}
|
|
|
|
if ( _stricmp(achInput,"?") == 0 ) {
|
|
dprintf("\n---------- NTVDM Monitor Help ------------\n\n");
|
|
dprintf("g - Go\n");
|
|
dprintf("gh - Go : Exception handled\n");
|
|
dprintf("gn - Go : Exception not handled\n");
|
|
dprintf("help - Display extension help\n");
|
|
dprintf("r<reg> <val> - reg=[eax|ebx|ecx|edx|eip|esp|ebp|efl]\n");
|
|
dprintf("rp - display pending register set\n");
|
|
dprintf("t - Trace 1 instruction\n");
|
|
dprintf("!<cmd> - Execute extension command\n");
|
|
dprintf(".<cmd> - Execute native NTSD command\n");
|
|
dprintf("\nAnything else is interpreted as a VDMEXTS extension command\n\n");
|
|
continue;
|
|
}
|
|
|
|
g_CurCmd = &achInput[1];
|
|
g_CommandStart = g_CurCmd;
|
|
ProcessCommandsAndCatch(NULL);
|
|
}
|
|
g_Target->m_Machines[MACHIDX_I386]->m_Context.X86Nt5Context = vc;
|
|
(*pfnVDMSetContext)(OS_HANDLE(g_EventProcess->m_SysHandle),
|
|
OS_HANDLE(g_EventThread->m_Handle),
|
|
(LPVDMCONTEXT)&g_Target->m_Machines[MACHIDX_I386]->m_Context);
|
|
}
|
|
/*
|
|
** End of temporary code
|
|
*/
|
|
|
|
if ( fNeedSegTableEdit ) {
|
|
segslot = 0;
|
|
fStop = FALSE;
|
|
while ( segslot < MAXSEGENTRY ) {
|
|
switch( mode ) {
|
|
case DBG_SEGLOAD:
|
|
if ( segtable[segslot].type == SEGTYPE_AVAILABLE ) {
|
|
segtable[segslot].segment = segment;
|
|
segtable[segslot].selector = selector;
|
|
// This notification message is used only by wow in prot
|
|
// It could be determined from the current mode to be
|
|
// correct
|
|
segtable[segslot].type = SEGTYPE_PROT;
|
|
Str = (PSTR)calloc(1,strlen(se.FileName)+1);
|
|
if ( !Str ) {
|
|
return( VDMEVENT_NOT_HANDLED );
|
|
}
|
|
strcpy( Str, se.FileName );
|
|
segtable[segslot].path_name = Str;
|
|
segtable[segslot].ImgLen = 0;
|
|
fStop = TRUE;
|
|
}
|
|
break;
|
|
case DBG_SEGMOVE:
|
|
if (( segtable[segslot].type != SEGTYPE_AVAILABLE ) &&
|
|
( segtable[segslot].selector == selector )) {
|
|
segtable[segslot].selector = newselect;
|
|
fStop = TRUE;
|
|
}
|
|
break;
|
|
case DBG_SEGFREE:
|
|
if ( segtable[segslot].selector == selector ) {
|
|
fStop = TRUE;
|
|
segtable[segslot].type = SEGTYPE_AVAILABLE;
|
|
free(segtable[segslot].path_name);
|
|
segtable[segslot].path_name = NULL;
|
|
}
|
|
break;
|
|
case DBG_MODFREE:
|
|
if ( segtable[segslot].type != SEGTYPE_AVAILABLE ) {
|
|
if ( _stricmp(segtable[segslot].path_name,se.FileName) == 0 ) {
|
|
segtable[segslot].type = SEGTYPE_AVAILABLE;
|
|
free(segtable[segslot].path_name);
|
|
segtable[segslot].path_name = NULL;
|
|
}
|
|
}
|
|
break;
|
|
case DBG_MODLOAD:
|
|
if ( segtable[segslot].type == SEGTYPE_AVAILABLE ) {
|
|
segtable[segslot].segment = segment;
|
|
segtable[segslot].selector = selector;
|
|
// This notification message is used only by v86 dos
|
|
// It could be determined from the current mode to be
|
|
// correct
|
|
segtable[segslot].type = SEGTYPE_V86;
|
|
Str = (PSTR)calloc(1,strlen(pFileName)+1);
|
|
if ( !Str ) {
|
|
return( VDMEVENT_NOT_HANDLED );
|
|
}
|
|
strcpy( Str, pFileName );
|
|
segtable[segslot].path_name = Str;
|
|
segtable[segslot].ImgLen = ImgLen;
|
|
fStop = TRUE;
|
|
}
|
|
break;
|
|
|
|
}
|
|
if ( fStop ) {
|
|
break;
|
|
}
|
|
segslot++;
|
|
}
|
|
if ( segslot == MAXSEGENTRY ) {
|
|
if ( mode == DBG_SEGLOAD ) {
|
|
dprintf("Warning - adding selector %04X for segment %d, segtable full\n",
|
|
selector, segment );
|
|
}
|
|
}
|
|
}
|
|
|
|
pDebugEvent->u.Exception.ExceptionRecord.ExceptionCode = ulRet;
|
|
|
|
return( ulRet );
|
|
}
|