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Diffstat (limited to 'tools/lldb-mi/MICmnLLDBProxySBValue.cpp')
-rw-r--r-- | tools/lldb-mi/MICmnLLDBProxySBValue.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/tools/lldb-mi/MICmnLLDBProxySBValue.cpp b/tools/lldb-mi/MICmnLLDBProxySBValue.cpp new file mode 100644 index 000000000000..78ef76bf698f --- /dev/null +++ b/tools/lldb-mi/MICmnLLDBProxySBValue.cpp @@ -0,0 +1,153 @@ +//===-- 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> + +// 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; +} + |