113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
/****************************************************************************
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* *
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* Project64 - A Nintendo 64 emulator. *
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* http://www.pj64-emu.com/ *
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* Copyright (C) 2012 Project64. All rights reserved. *
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* *
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* License: *
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* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html *
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* *
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****************************************************************************/
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#include "stdafx.h"
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#include <Project64-core/N64System/Mips/Sram.h>
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#include <Common/path.h>
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CSram::CSram(bool ReadOnly) :
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m_ReadOnly(ReadOnly)
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{
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}
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CSram::~CSram()
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{
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}
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bool CSram::LoadSram()
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{
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CPath FileName(g_Settings->LoadStringVal(Directory_NativeSave).c_str(), stdstr_f("%s.sra", g_Settings->LoadStringVal(Game_GameName).c_str()).c_str());
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if (g_Settings->LoadBool(Setting_UniqueSaveDir))
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{
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FileName.AppendDirectory(g_Settings->LoadStringVal(Game_UniqueSaveDir).c_str());
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}
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if (!FileName.DirectoryExists())
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{
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FileName.DirectoryCreate();
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}
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if (!m_File.Open(FileName, (m_ReadOnly ? CFileBase::modeRead : CFileBase::modeReadWrite) | CFileBase::modeNoTruncate | CFileBase::modeCreate))
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{
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#ifdef _WIN32
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WriteTrace(TraceN64System, TraceError, "Failed to open (%s), ReadOnly = %d, LastError = %X", (const char *)FileName, m_ReadOnly, GetLastError());
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#else
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WriteTrace(TraceN64System, TraceError, "Failed to open (%s), ReadOnly = %d", (const char *)FileName, m_ReadOnly);
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#endif
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return false;
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}
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m_File.SeekToBegin();
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return true;
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}
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void CSram::DmaFromSram(uint8_t * dest, int32_t StartOffset, int32_t len)
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{
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uint32_t i;
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if (!m_File.IsOpen())
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{
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if (!LoadSram())
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{
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return;
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}
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}
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// Fix Dezaemon 3D saves
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StartOffset = ((StartOffset >> 3) & 0xFFFF8000) | (StartOffset & 0x7FFF);
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if (((StartOffset & 3) == 0) && ((((uint32_t)dest) & 3) == 0))
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{
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m_File.Seek(StartOffset, CFile::begin);
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m_File.Read(dest, len);
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}
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else
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{
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for (i = 0; i < len; i++)
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{
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m_File.Seek((StartOffset + i) ^ 3, CFile::begin);
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m_File.Read((uint8_t*)(((uint32_t)dest + i) ^ 3), 1);
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}
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}
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}
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void CSram::DmaToSram(uint8_t * Source, int32_t StartOffset, int32_t len)
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{
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uint32_t i;
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if (m_ReadOnly)
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{
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return;
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}
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if (!m_File.IsOpen())
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{
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if (!LoadSram())
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{
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return;
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}
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}
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// Fix Dezaemon 3D saves
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StartOffset = ((StartOffset >> 3) & 0xFFFF8000) | (StartOffset & 0x7FFF);
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if (((StartOffset & 3) == 0) && ((((uint32_t)Source) & 3) == 0) && NULL != NULL)
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{
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m_File.Seek(StartOffset, CFile::begin);
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m_File.Write(Source, len);
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}
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else
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{
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for (i = 0; i < len; i++)
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{
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m_File.Seek((StartOffset + i) ^ 3, CFile::begin);
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m_File.Write((uint8_t*)(((uint32_t)Source + i) ^ 3), 1);
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}
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}
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} |