ntdll: Implemented RtlCaptureContext.

dlls/kernel32/kernel32.spec

@@ -920,7 +920,7 @@
 @ stdcall ResetWriteWatch(ptr long)
 @ stdcall RestoreLastError(long) ntdll.RtlRestoreLastWin32Error
 @ stdcall ResumeThread(long)
-# @ stub RtlCaptureContext ( -> ntdll.RtlCaptureContext)
+@ stdcall -register RtlCaptureContext(ptr) ntdll.RtlCaptureContext
 # @ stub RtlCaptureStackBackTrace ( -> ntdll.RtlCaptureStackBackTrace)
 @ stdcall RtlFillMemory(ptr long long) ntdll.RtlFillMemory
 @ stdcall RtlMoveMemory(ptr ptr long) ntdll.RtlMoveMemory

dlls/ntdll/exception.c

@@ -381,6 +381,26 @@ NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL
 }
 
 /***********************************************************************
+ *		RtlCaptureContext (NTDLL.@)
+ */
+void WINAPI __regs_RtlCaptureContext( CONTEXT *context_out, CONTEXT *context_in )
+{
+    *context_out = *context_in;
+}
+
+/**********************************************************************/
+
+#ifdef DEFINE_REGS_ENTRYPOINT
+DEFINE_REGS_ENTRYPOINT( RtlCaptureContext, 4, 4 )
+#else
+void WINAPI RtlCaptureContext( CONTEXT *context_out )
+{
+    memset( context_out, 0, sizeof(*context_out) );
+}
+#endif
+
+
+/***********************************************************************
  *		RtlRaiseException (NTDLL.@)
  */
 void WINAPI __regs_RtlRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context )
@@ -405,7 +425,7 @@ DEFINE_REGS_ENTRYPOINT( RtlRaiseException, 4, 4 )
 void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
 {
     CONTEXT context;
-    memset( &context, 0, sizeof(context) );
+    RtlCaptureContext( &context );
     __regs_RtlRaiseException( rec, &context );
 }
 #endif
@@ -498,7 +518,7 @@ void WINAPI RtlUnwind( PVOID pEndFrame, PVOID unusedEip,
                        PEXCEPTION_RECORD pRecord, PVOID returnEax )
 {
     CONTEXT context;
-    memset( &context, 0, sizeof(context) );
+    RtlCaptureContext( &context );
     __regs_RtlUnwind( pEndFrame, unusedEip, pRecord, returnEax, &context );
 }
 #endif

dlls/ntdll/ntdll.spec

@@ -433,7 +433,7 @@
 # @ stub RtlAssert2
 @ stdcall RtlAssert(ptr ptr long long)
 # @ stub RtlCancelTimer
-# @ stub RtlCaptureContext
+@ stdcall -register RtlCaptureContext(ptr)
 @ stub RtlCaptureStackBackTrace
 # @ stub RtlCaptureStackContext
 @ stdcall RtlCharToInteger(ptr long ptr)

include/winnt.h

@@ -1454,6 +1454,8 @@ typedef struct _CONTEXT
 
 typedef CONTEXT *PCONTEXT;
 
+NTSYSAPI void WINAPI RtlCaptureContext(CONTEXT*);
+
 /*
  * Language IDs
  */