forked from OSchip/llvm-project
139 lines
4.7 KiB
C++
139 lines
4.7 KiB
C++
//===-- MICmnLLDBProxySBValue.cpp -------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include <stdlib.h>
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// Third Party Headers:
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#include "lldb/API/SBError.h"
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// In-house headers:
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#include "MICmnLLDBDebugSessionInfo.h"
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#include "MICmnLLDBProxySBValue.h"
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#include "MIUtilString.h"
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//++
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//------------------------------------------------------------------------------------
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// Details: Retrieve the numerical value from the SBValue object. If the
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// function fails
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// it could indicate the SBValue object does not represent an internal
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// type.
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// Type: Static method.
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// Args: vrValue - (R) The SBValue object to get a value from.
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// vwValue - (W) The numerical value.
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// Return: MIstatus::success - Functionality succeeded.
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// MIstatus::failure - Functionality failed.
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// Throws: None.
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//--
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bool CMICmnLLDBProxySBValue::GetValueAsUnsigned(const lldb::SBValue &vrValue,
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MIuint64 &vwValue) {
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lldb::SBValue &rValue = const_cast<lldb::SBValue &>(vrValue);
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bool bCompositeType = true;
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MIuint64 nFailValue = 0;
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MIuint64 nValue = rValue.GetValueAsUnsigned(nFailValue);
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if (nValue == nFailValue) {
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nFailValue = 5; // Some arbitrary number
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nValue = rValue.GetValueAsUnsigned(nFailValue);
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if (nValue != nFailValue) {
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bCompositeType = false;
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vwValue = nValue;
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}
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} else {
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bCompositeType = false;
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vwValue = nValue;
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}
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return (bCompositeType ? MIstatus::failure : MIstatus::success);
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}
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//++
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//------------------------------------------------------------------------------------
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// Details: Retrieve the numerical value from the SBValue object. If the
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// function fails
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// it could indicate the SBValue object does not represent an internal
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// type.
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// Type: Static method.
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// Args: vrValue - (R) The SBValue object to get a value from.
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// vwValue - (W) The numerical value.
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// Return: MIstatus::success - Functionality succeeded.
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// MIstatus::failure - Functionality failed.
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// Throws: None.
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//--
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bool CMICmnLLDBProxySBValue::GetValueAsSigned(const lldb::SBValue &vrValue,
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MIint64 &vwValue) {
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lldb::SBValue &rValue = const_cast<lldb::SBValue &>(vrValue);
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bool bCompositeType = true;
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MIuint64 nFailValue = 0;
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MIuint64 nValue = rValue.GetValueAsSigned(nFailValue);
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if (nValue == nFailValue) {
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nFailValue = 5; // Some arbitrary number
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nValue = rValue.GetValueAsSigned(nFailValue);
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if (nValue != nFailValue) {
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bCompositeType = false;
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vwValue = nValue;
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}
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} else {
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bCompositeType = false;
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vwValue = nValue;
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}
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return (bCompositeType ? MIstatus::failure : MIstatus::success);
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}
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//++
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//------------------------------------------------------------------------------------
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// Details: Retrieve the NUL terminated string from the SBValue object if it of
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// the type
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// unsigned char *.
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// Type: Static method.
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// Args: vrValue - (R) The SBValue object to get a value from.
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// vwCString - (W) The text data '\0' terminated.
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// Return: MIstatus::success - Functionality succeeded.
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// MIstatus::failure - Functionality failed, not suitable type.
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// Throws: None.
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//--
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bool CMICmnLLDBProxySBValue::GetCString(const lldb::SBValue &vrValue,
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CMIUtilString &vwCString) {
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lldb::SBValue &rValue = const_cast<lldb::SBValue &>(vrValue);
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const char *pCType = rValue.GetTypeName();
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if (pCType == nullptr)
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return MIstatus::failure;
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const char *pType = "unsigned char *";
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if (!CMIUtilString::Compare(pCType, pType))
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return MIstatus::failure;
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const CMIUtilString strAddr(rValue.GetValue());
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MIint64 nNum = 0;
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if (!strAddr.ExtractNumber(nNum))
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return MIstatus::failure;
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CMICmnLLDBDebugSessionInfo &rSessionInfo(
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CMICmnLLDBDebugSessionInfo::Instance());
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lldb::SBProcess sbProcess = rSessionInfo.GetProcess();
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MIuint nBufferSize = 64;
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bool bNeedResize = false;
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char *pBuffer = static_cast<char *>(::malloc(nBufferSize));
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do {
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lldb::SBError error;
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const size_t nReadSize = sbProcess.ReadCStringFromMemory(
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(lldb::addr_t)nNum, pBuffer, nBufferSize, error);
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if (nReadSize == (nBufferSize - 1)) {
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bNeedResize = true;
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nBufferSize = nBufferSize << 1;
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pBuffer = static_cast<char *>(::realloc(pBuffer, nBufferSize));
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} else
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bNeedResize = false;
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} while (bNeedResize);
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vwCString = pBuffer;
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free((void *)pBuffer);
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return MIstatus::success;
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}
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