/****************************************************************************
*                                                                           *
* Project64 - A Nintendo 64 emulator.                                      *
* http://www.pj64-emu.com/                                                  *
* Copyright (C) 2012 Project64. All rights reserved.                        *
*                                                                           *
* License:                                                                  *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                        *
*                                                                           *
****************************************************************************/
#include "stdafx.h"
#include "DMALog.h"

void CDMALog::AddEntry(uint32_t romAddr, uint32_t ramAddr, uint32_t length)
{
	DMALOGENTRY entry = { romAddr, ramAddr, length };
	m_Log.push_back(entry);
}

void CDMALog::ClearEntries()
{
	m_Log.clear();
}

size_t CDMALog::GetNumEntries()
{
	return m_Log.size();
}

DMALOGENTRY* CDMALog::GetEntryByIndex(uint32_t index)
{
	if (index < m_Log.size())
	{
		return &m_Log[index];
	}
	return NULL;
}

DMALOGENTRY* CDMALog::GetEntryByRamAddress(uint32_t ramAddr)
{
	uint32_t nEntries = GetNumEntries();

	if (nEntries == 0)
	{
		return NULL;
	}

	for (uint32_t i = nEntries - 1; i-- > 0;)
	{
		uint32_t min = m_Log[i].ramAddr;
		uint32_t max = min + m_Log[i].length - 1;

		if (ramAddr >= min && ramAddr <= max)
		{
			return &m_Log[i];
		}
	}
	return NULL;
}

DMALOGENTRY* CDMALog::GetEntryByRamAddress(uint32_t ramAddr, uint32_t* lpRomAddr, uint32_t* lpOffset)
{
	DMALOGENTRY* lpEntry = GetEntryByRamAddress(ramAddr);

	if (lpEntry == NULL)
	{
		return NULL;
	}

	*lpOffset = ramAddr - lpEntry->ramAddr;
	*lpRomAddr = lpEntry->romAddr + *lpOffset;

	return lpEntry;
}

DMALOGENTRY* CDMALog::GetEntryByRomAddress(uint32_t romAddr)
{
	uint32_t nEntries = GetNumEntries();

	if (nEntries == 0)
	{
		return NULL;
	}

	for (uint32_t i = nEntries - 1; i-- > 0; )
	{
		uint32_t min = m_Log[i].romAddr;
		uint32_t max = min + m_Log[i].length - 1;

		if (romAddr >= min && romAddr <= max)
		{
			return &m_Log[i];
		}
	}
	return NULL;
}

DMALOGENTRY* CDMALog::GetEntryByRomAddress(uint32_t romAddr, uint32_t* lpRamAddr, uint32_t* lpOffset)
{
	DMALOGENTRY* lpEntry = GetEntryByRomAddress(romAddr);

	if (lpEntry == NULL)
	{
		return NULL;
	}

	*lpOffset = romAddr - lpEntry->romAddr;
	*lpRamAddr = lpEntry->ramAddr + *lpOffset;

	return lpEntry;
}