1 files changed, 150 insertions, 0 deletions
diff --git a/lldb/tools/lldb-mi/MICmnLLDBProxySBValue.cpp b/lldb/tools/lldb-mi/MICmnLLDBProxySBValue.cpp
new file mode 100644
index 00000000000..701cf5783bb
--- /dev/null
+++ b/lldb/tools/lldb-mi/MICmnLLDBProxySBValue.cpp
@@ -0,0 +1,150 @@
+//===-- MICmnLLDBProxySBValue.cpp -------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//++
+// File:		MICmnLLDBProxySBValue.cpp
+//
+// Overview:	CMICmnLLDBProxySBValue implementation.
+//
+// Environment:	Compilers:	Visual C++ 12.
+//							gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
+//				Libraries:	See MIReadmetxt. 
+//
+// Copyright:	None.
+//--
+
+// Third Party Headers:
+#include <lldb/API/SBError.h>
+
+// In-house headers:
+#include "MICmnLLDBProxySBValue.h"
+#include "MIUtilString.h"
+#include "MICmnLLDBDebugSessionInfo.h"
+
+//++ ------------------------------------------------------------------------------------
+// Details:	Retrieve the numerical value from the SBValue object. If the function fails
+//			it could indicate the SBValue object does not represent an internal type.
+// Type:	Static method.
+// Args:	vrValue	- (R) The SBValue object to get a value from.
+//			vwValue	- (W) The numerical value.
+// Return:	MIstatus::success - Functionality succeeded.
+//			MIstatus::failure - Functionality failed.
+// Throws:	None.
+//--
+bool CMICmnLLDBProxySBValue::GetValueAsUnsigned( const lldb::SBValue & vrValue, MIuint64 & vwValue )
+{
+	lldb::SBValue & rValue = const_cast< lldb::SBValue & >( vrValue );
+	bool bCompositeType = true;
+	MIuint64 nFailValue = 0;
+	MIuint64 nValue = rValue.GetValueAsUnsigned( nFailValue );
+	if( nValue == nFailValue )
+	{
+		nFailValue = 5; // Some arbitary number
+		nValue = rValue.GetValueAsUnsigned( nFailValue );
+		if( nValue != nFailValue )
+		{
+			bCompositeType = false;
+			vwValue = nValue;
+		}
+	}
+	else
+	{
+		bCompositeType = false;
+		vwValue = nValue;
+	}
+
+	return (bCompositeType ? MIstatus::failure : MIstatus::success);
+}
+
+//++ ------------------------------------------------------------------------------------
+// Details:	Retrieve the numerical value from the SBValue object. If the function fails
+//			it could indicate the SBValue object does not represent an internal type.
+// Type:	Static method.
+// Args:	vrValue	- (R) The SBValue object to get a value from.
+//			vwValue	- (W) The numerical value.
+// Return:	MIstatus::success - Functionality succeeded.
+//			MIstatus::failure - Functionality failed.
+// Throws:	None.
+//--
+bool CMICmnLLDBProxySBValue::GetValueAsSigned( const lldb::SBValue & vrValue, MIint64 & vwValue )
+{
+	lldb::SBValue & rValue = const_cast< lldb::SBValue & >( vrValue );
+	bool bCompositeType = true;
+	MIuint64 nFailValue = 0;
+	MIuint64 nValue = rValue.GetValueAsSigned( nFailValue );
+	if( nValue == nFailValue )
+	{
+		nFailValue = 5; // Some arbitary number
+		nValue = rValue.GetValueAsSigned( nFailValue );
+		if( nValue != nFailValue )
+		{
+			bCompositeType = false;
+			vwValue = nValue;
+		}
+	}
+	else
+	{
+		bCompositeType = false;
+		vwValue = nValue;
+	}
+
+	return (bCompositeType ? MIstatus::failure : MIstatus::success);
+}
+
+//++ ------------------------------------------------------------------------------------
+// Details:	Retrieve the NUL terminated string from the SBValue object if it of the type
+//			unsigned char *. 
+// Type:	Static method.
+// Args:	vrValue		- (R) The SBValue object to get a value from.
+//			vwCString	- (W) The text data '\0' terminated.
+// Return:	MIstatus::success - Functionality succeeded.
+//			MIstatus::failure - Functionality failed, not suitable type.
+// Throws:	None.
+//--
+bool CMICmnLLDBProxySBValue::GetCString( const lldb::SBValue & vrValue, CMIUtilString & vwCString )
+{
+	lldb::SBValue & rValue = const_cast< lldb::SBValue & >( vrValue );
+	const char * pCType = rValue.GetTypeName();
+	if( pCType == nullptr )
+		return MIstatus::failure;
+	
+	const MIchar * pType = "unsigned char *";
+	if( !CMIUtilString::Compare( pCType, pType ) )
+		return MIstatus::failure;
+
+	const CMIUtilString strAddr( rValue.GetValue() );
+	MIint64 nNum = 0;
+	if( !strAddr.ExtractNumber( nNum ) )
+		return MIstatus::failure;
+
+	CMICmnLLDBDebugSessionInfo & rSessionInfo( CMICmnLLDBDebugSessionInfo::Instance() );
+	lldb::SBProcess & rProcess = rSessionInfo.m_lldbProcess;
+	MIuint nBufferSize = 64;
+	bool bNeedResize = false;
+	char * pBuffer = static_cast< char * >( ::malloc( nBufferSize ) );
+	do
+	{
+		lldb::SBError error;
+		const size_t nReadSize = rProcess.ReadCStringFromMemory( (lldb::addr_t) nNum, pBuffer, nBufferSize, error );
+		if( nReadSize == (nBufferSize - 1) )
+		{
+			bNeedResize = true;
+			nBufferSize  = nBufferSize << 1;
+			pBuffer = static_cast< char * >( ::realloc( pBuffer, nBufferSize ) );
+		}
+		else
+			bNeedResize = false;
+	} 
+	while( bNeedResize );
+
+	vwCString = pBuffer;
+	free( (void *) pBuffer );
+
+	return MIstatus::success;
+}