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[NTOSKRNL]

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Add support for debug pre/post syscall hooks, that can be registered from win32k. They only exist on DBG versions.

svn path=/trunk/; revision=50823
This commit is contained in:
Timo Kreuzer 2011-02-19 21:50:11 +00:00
parent 7d2277a1ea
commit ea5522e1d8
3 changed files with 59 additions and 1 deletions
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9
reactos/ntoskrnl/include/internal/kd.h
View file

@ -363,3 +363,12 @@ extern KD_CONTEXT KdpContext;
extern ULONG Kd_WIN2000_Mask; extern ULONG Kd_WIN2000_Mask;
#endif #endif
#if DBG
#define ID_Win32PreServiceHook 'WSH0'
#define ID_Win32PostServiceHook 'WSH1'
typedef void (NTAPI *PKDBG_PRESERVICEHOOK)(ULONG, PULONG_PTR);
typedef ULONG_PTR (NTAPI *PKDBG_POSTSERVICEHOOK)(ULONG, ULONG_PTR);
extern PKDBG_PRESERVICEHOOK KeWin32PreServiceHook;
extern PKDBG_POSTSERVICEHOOK KeWin32PostServiceHook;
#endif

17
reactos/ntoskrnl/kd/kdmain.c
View file

@ -82,6 +82,23 @@ KdpServiceDispatcher(ULONG Service,
break; break;
} }
/* Register a debug callback */
case 'CsoR':
{
switch (Buffer1Length)
{
case ID_Win32PreServiceHook:
KeWin32PreServiceHook = Buffer1;
break;
case ID_Win32PostServiceHook:
KeWin32PostServiceHook = Buffer1;
break;
}
break;
}
/* Special case for stack frame dumps */ /* Special case for stack frame dumps */
case 'DsoR': case 'DsoR':
{ {

32
reactos/ntoskrnl/ke/i386/traphdlr.c
View file

@ -46,6 +46,10 @@ UCHAR KiTrapIoTable[] =
}; };
PFAST_SYSTEM_CALL_EXIT KiFastCallExitHandler; PFAST_SYSTEM_CALL_EXIT KiFastCallExitHandler;
#if DBG
PKDBG_PRESERVICEHOOK KeWin32PreServiceHook = NULL;
PKDBG_POSTSERVICEHOOK KeWin32PostServiceHook = NULL;
#endif
/* TRAP EXIT CODE *************************************************************/ /* TRAP EXIT CODE *************************************************************/
@ -1443,6 +1447,28 @@ KiDebugServiceHandler(IN PKTRAP_FRAME TrapFrame)
KiDebugHandler(TrapFrame, TrapFrame->Eax, TrapFrame->Ecx, TrapFrame->Edx); KiDebugHandler(TrapFrame, TrapFrame->Eax, TrapFrame->Ecx, TrapFrame->Edx);
} }
FORCEINLINE
VOID
KiDbgPreServiceHook(ULONG SystemCallNumber, PULONG_PTR Arguments)
{
#if DBG
if (SystemCallNumber >= 0x1000 && KeWin32PreServiceHook)
KeWin32PreServiceHook(SystemCallNumber, Arguments);
#endif
}
FORCEINLINE
ULONG_PTR
KiDbgPostServiceHook(ULONG SystemCallNumber, ULONG_PTR Result)
{
#if DBG
if (SystemCallNumber >= 0x1000 && KeWin32PostServiceHook)
return KeWin32PostServiceHook(SystemCallNumber, Result);
#endif
return Result;
}
DECLSPEC_NORETURN DECLSPEC_NORETURN
VOID VOID
FORCEINLINE FORCEINLINE
@ -1553,10 +1579,16 @@ KiSystemCall(IN PKTRAP_FRAME TrapFrame,
while (TRUE); while (TRUE);
} }
/* Call pre-service debug hook */
KiDbgPreServiceHook(SystemCallNumber, Arguments);
/* Get the handler and make the system call */ /* Get the handler and make the system call */
Handler = (PVOID)DescriptorTable->Base[Id]; Handler = (PVOID)DescriptorTable->Base[Id];
Result = KiSystemCallTrampoline(Handler, Arguments, StackBytes); Result = KiSystemCallTrampoline(Handler, Arguments, StackBytes);
/* Call post-service debug hook */
Result = KiDbgPostServiceHook(SystemCallNumber, Result);
/* Make sure we're exiting correctly */ /* Make sure we're exiting correctly */
KiExitSystemCallDebugChecks(Id, TrapFrame); KiExitSystemCallDebugChecks(Id, TrapFrame);