From 8b43407e91aedc68ea2421cad2e4828030aa83ed Mon Sep 17 00:00:00 2001
From: "SND\\kernelnet_cp"
 <SND\kernelnet_cp@9b283d60-5439-405e-af05-b73fd8c4d996>
Date: Mon, 27 Dec 2010 08:02:19 +0000
Subject: [PATCH] [+] added : eval routine for evaluation windbg expression

git-svn-id: https://pykd.svn.codeplex.com/svn@59202 9b283d60-5439-405e-af05-b73fd8c4d996
---
 pykd/dbgcmd.cpp | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
 pykd/dbgcmd.h   |  5 +++++
 pykd/dbgext.cpp |  3 ++-
 3 files changed, 62 insertions(+), 1 deletion(-)

diff --git a/pykd/dbgcmd.cpp b/pykd/dbgcmd.cpp
index 7024283..3779089 100644
--- a/pykd/dbgcmd.cpp
+++ b/pykd/dbgcmd.cpp
@@ -4,6 +4,7 @@
 #include "dbgcmd.h"
 #include "dbgexcept.h"
 #include "dbgcallback.h"
+#include "dbgsystem.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -168,3 +169,57 @@ dbgBreakpointClass::remove()
 }
 
 /////////////////////////////////////////////////////////////////////////////// 
+
+ULONG64
+evaluate( const std::string  &expression )
+{
+    HRESULT             hres;
+    ULONG64             value = 0;
+    
+    try {
+    
+        DEBUG_VALUE  debugValue = {};
+        ULONG        remainderIndex = 0;
+        
+        if ( is64bitSystem() )
+        {
+            hres = dbgExt->control->Evaluate( 
+                expression.c_str(), 
+                DEBUG_VALUE_INT64,
+                &debugValue,
+                &remainderIndex );
+                
+            if (  FAILED( hres ) )
+                throw  DbgException( "IDebugControl::Evaluate  failed" );             
+                
+            if ( remainderIndex == expression.length() )
+                value = debugValue.I64;
+        }
+        else
+        {
+            hres = dbgExt->control->Evaluate( 
+                expression.c_str(), 
+                DEBUG_VALUE_INT32,
+                &debugValue,
+                &remainderIndex );
+                
+            if (  FAILED( hres ) )
+                throw  DbgException( "IDebugControl::Evaluate  failed" );             
+                
+            if ( remainderIndex == expression.length() )
+                value = debugValue.I32;
+        }      
+    } 
+	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 value;
+}
+
+/////////////////////////////////////////////////////////////////////////////// 
\ No newline at end of file
diff --git a/pykd/dbgcmd.h b/pykd/dbgcmd.h
index a245d21..de93b82 100644
--- a/pykd/dbgcmd.h
+++ b/pykd/dbgcmd.h
@@ -99,3 +99,8 @@ private:
 };
 
 /////////////////////////////////////////////////////////////////////////////////
+
+ULONG64
+evaluate( const std::string  &expression );
+    
+/////////////////////////////////////////////////////////////////////////////////
\ No newline at end of file
diff --git a/pykd/dbgext.cpp b/pykd/dbgext.cpp
index 9dd4271..648bf7b 100644
--- a/pykd/dbgext.cpp
+++ b/pykd/dbgext.cpp
@@ -87,7 +87,8 @@ BOOST_PYTHON_MODULE( pykd )
 {
     boost::python::def( "go", &setExecutionStatus<DEBUG_STATUS_GO> );
     boost::python::def( "trace", &setExecutionStatus<DEBUG_STATUS_STEP_INTO> );
-    boost::python::def( "step", &setExecutionStatus<DEBUG_STATUS_STEP_OVER> );    
+    boost::python::def( "step", &setExecutionStatus<DEBUG_STATUS_STEP_OVER> );   
+    boost::python::def( "eval", &evaluate ); 
     boost::python::def( "createSession", &dbgCreateSession );
     boost::python::def( "isSessionStart", &dbgIsSessionStart );
     boost::python::def( "symbolsPath", &dbgSymPath );