| //===-- 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. |
| //-- |
| |
| #include <stdlib.h> |
| |
| // Third Party Headers: |
| #include <lldb/API/SBError.h> |
| #include <cstdlib> |
| |
| // 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 MIchar * 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; |
| MIchar * pBuffer = static_cast< MIchar * >( ::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< MIchar * >( ::realloc( pBuffer, nBufferSize ) ); |
| } |
| else |
| bNeedResize = false; |
| } |
| while( bNeedResize ); |
| |
| vwCString = pBuffer; |
| free( (void *) pBuffer ); |
| |
| return MIstatus::success; |
| } |