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//===-- 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 sbProcess = rSessionInfo.GetProcess();
MIuint nBufferSize = 64;
bool bNeedResize = false;
MIchar *pBuffer = static_cast<MIchar *>(::malloc(nBufferSize));
do
{
lldb::SBError error;
const size_t nReadSize = sbProcess.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;
}
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