[+] added : isValid() routine; it validates virtual address

git-svn-id: https://pykd.svn.codeplex.com/svn@61122 9b283d60-5439-405e-af05-b73fd8c4d996

pykd/dbgext.cpp

@@ -98,6 +98,7 @@ BOOST_PYTHON_MODULE( pykd )
     boost::python::def( "dprintln", &DbgPrint::dprintln, dprintln( boost::python::args( "str", "dml" ), ""  ) );
     boost::python::def( "loadDump", &dbgLoadDump );
     boost::python::def( "dbgCommand", &dbgCommand );
+    boost::python::def( "isValid", &isOffsetValid );
     boost::python::def( "is64bitSystem", &is64bitSystem );
     boost::python::def( "isKernelDebugging", &isKernelDebugging );
     boost::python::def( "ptrSize", ptrSize );

pykd/dbgmem.cpp

@@ -4,6 +4,7 @@
 #include "dbgexcept.h"
 #include "dbgmem.h"
 #include "dbgsystem.h"
+#include "dbgcallback.h"
 
 using namespace std;
 
@@ -526,3 +527,44 @@ loadLinkedList( ULONG64 address )
 }
 
 ///////////////////////////////////////////////////////////////////////////////////
+
+bool
+isOffsetValid( ULONG64  addr )
+{
+    HRESULT     hres;
+
+    try {
+    
+        // íóæíî ïîäàâèòü âîçìîæíûé âûâîä â êîíñîëü îá îòñóòñòâóþùåé ñòðàíèöå ïàìÿòè
+        OutputReader outputReader( dbgExt->client );    
+    
+        ULONG       offsetInfo;
+        
+        hres = 
+            dbgExt->dataSpaces4->GetOffsetInformation(
+                DEBUG_DATA_SPACE_VIRTUAL,
+                DEBUG_OFFSINFO_VIRTUAL_SOURCE,
+                addr,
+                &offsetInfo,
+                sizeof( offsetInfo ),
+                NULL );
+                
+        if ( FAILED( hres ) )
+            throw DbgException( "IDebugDataSpace4::GetOffsetInformation  failed" );                    
+            
+        return  offsetInfo != DEBUG_VSOURCE_INVALID;       
+    
+    } 
+	catch( std::exception  &e )
+	{
+		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
+	}
+	catch(...)
+	{
+		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
+	}	            
+	
+	return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////////

pykd/dbgmem.h

@@ -91,4 +91,7 @@ addr64( ULONG64  addr );
 boost::python::object
 loadLinkedList( ULONG64 address );
 
+bool
+isOffsetValid( ULONG64  addr );
+
 /////////////////////////////////////////////////////////////////////////////////