Mesen-SX/Core/CodeDataLogger.cpp

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#include "stdafx.h"
#include "CodeDataLogger.h"
CodeDataLogger::CodeDataLogger(uint32_t prgSize)
{
_prgSize = prgSize;
_cdlData = new uint8_t[prgSize];
Reset();
}
CodeDataLogger::~CodeDataLogger()
{
delete[] _cdlData;
}
void CodeDataLogger::Reset()
{
_codeSize = 0;
_dataSize = 0;
memset(_cdlData, 0, _prgSize);
}
bool CodeDataLogger::LoadCdlFile(string cdlFilepath)
{
ifstream cdlFile(cdlFilepath, ios::in | ios::binary);
if(cdlFile) {
cdlFile.seekg(0, std::ios::end);
size_t fileSize = (size_t)cdlFile.tellg();
cdlFile.seekg(0, std::ios::beg);
if(fileSize == _prgSize) {
Reset();
cdlFile.read((char*)_cdlData, _prgSize);
cdlFile.close();
CalculateStats();
return true;
}
}
return false;
}
void CodeDataLogger::CalculateStats()
{
_codeSize = 0;
_dataSize = 0;
for(int i = 0, len = _prgSize; i < len; i++) {
if(IsCode(i)) {
_codeSize++;
} else if(IsData(i)) {
_dataSize++;
}
}
}
bool CodeDataLogger::SaveCdlFile(string cdlFilepath)
{
ofstream cdlFile(cdlFilepath, ios::out | ios::binary);
if(cdlFile) {
cdlFile.write((char*)_cdlData, _prgSize);
cdlFile.close();
return true;
}
return false;
}
void CodeDataLogger::SetFlags(int32_t absoluteAddr, uint8_t flags)
{
if(absoluteAddr >= 0 && absoluteAddr < (int32_t)_prgSize) {
if((_cdlData[absoluteAddr] & flags) != flags) {
if(flags & CdlFlags::Code) {
if(IsData(absoluteAddr)) {
//Remove the data flag from bytes that we are flagging as code
_cdlData[absoluteAddr] &= ~CdlFlags::Data;
_dataSize--;
}
_cdlData[absoluteAddr] |= flags;
_codeSize++;
} else if(flags & CdlFlags::Data) {
if(!IsCode(absoluteAddr)) {
_cdlData[absoluteAddr] |= flags;
_dataSize++;
}
} else {
_cdlData[absoluteAddr] |= flags;
}
}
}
}
CdlRatios CodeDataLogger::GetRatios()
{
CdlRatios ratios;
ratios.CodeRatio = (float)_codeSize / (float)_prgSize;
ratios.DataRatio = (float)_dataSize / (float)_prgSize;
ratios.PrgRatio = (float)(_codeSize + _dataSize) / (float)_prgSize;
return ratios;
}
bool CodeDataLogger::IsCode(uint32_t absoluteAddr)
{
return (_cdlData[absoluteAddr] & CdlFlags::Code) != 0;
}
bool CodeDataLogger::IsJumpTarget(uint32_t absoluteAddr)
{
return (_cdlData[absoluteAddr] & CdlFlags::JumpTarget) != 0;
}
bool CodeDataLogger::IsSubEntryPoint(uint32_t absoluteAddr)
{
return (_cdlData[absoluteAddr] & CdlFlags::SubEntryPoint) != 0;
}
bool CodeDataLogger::IsData(uint32_t absoluteAddr)
{
return (_cdlData[absoluteAddr] & CdlFlags::Data) != 0;
}
uint8_t CodeDataLogger::GetCpuFlags(uint32_t absoluteAddr)
{
return _cdlData[absoluteAddr] & (CdlFlags::MemoryMode8 | CdlFlags::IndexMode8);
}
void CodeDataLogger::SetCdlData(uint8_t *cdlData, uint32_t length)
{
if(length <= _prgSize) {
memcpy(_cdlData, cdlData, length);
CalculateStats();
}
}