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//===-- MICmnLLDBProxySBValue.cpp -------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <stdlib.h>
// Third Party Headers:
#include "lldb/API/SBError.h"
// In-house headers:
#include "MICmnLLDBDebugSessionInfo.h"
#include "MICmnLLDBProxySBValue.h"
#include "MIUtilString.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 arbitrary 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 arbitrary 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 char *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;
char *pBuffer = static_cast<char *>(::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<char *>(::realloc(pBuffer, nBufferSize));
} else
bNeedResize = false;
} while (bNeedResize);
vwCString = pBuffer;
free((void *)pBuffer);
return MIstatus::success;
}
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