project64/Source/Project64-core/N64System/Recompiler/FunctionMapClass.cpp

83 lines
2.8 KiB
C++

/****************************************************************************
* *
* 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 "FunctionMapClass.h"
#include <Project64-core/N64System/SystemGlobals.h>
#include <Project64-core/N64System/N64Class.h>
#include <Windows.h>
CFunctionMap::CFunctionMap() :
m_JumpTable(NULL),
m_FunctionTable(NULL)
{
}
CFunctionMap::~CFunctionMap()
{
CleanBuffers();
}
bool CFunctionMap::AllocateMemory()
{
if (g_System->LookUpMode() == FuncFind_VirtualLookup && m_FunctionTable == NULL)
{
m_FunctionTable = (PCCompiledFunc_TABLE *)VirtualAlloc(NULL, 0xFFFFF * sizeof(CCompiledFunc *), MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (m_FunctionTable == NULL)
{
WriteTrace(TraceRecompiler, TraceError, "failed to allocate function table");
g_Notify->FatalError(MSG_MEM_ALLOC_ERROR);
return false;
}
memset(m_FunctionTable, 0, 0xFFFFF * sizeof(CCompiledFunc *));
}
if (g_System->LookUpMode() == FuncFind_PhysicalLookup && m_JumpTable == NULL)
{
m_JumpTable = new PCCompiledFunc[g_MMU->RdramSize() >> 2];
if (m_JumpTable == NULL)
{
WriteTrace(TraceRecompiler, TraceError, "failed to allocate jump table");
g_Notify->FatalError(MSG_MEM_ALLOC_ERROR);
return false;
}
memset(m_JumpTable, 0, (g_MMU->RdramSize() >> 2) * sizeof(PCCompiledFunc));
}
return true;
}
void CFunctionMap::CleanBuffers()
{
if (m_FunctionTable)
{
for (int i = 0, n = 0x100000; i < n; i++)
{
if (m_FunctionTable[i] != NULL)
{
delete m_FunctionTable[i];
}
}
VirtualFree(m_FunctionTable, 0, MEM_RELEASE);
m_FunctionTable = NULL;
}
if (m_JumpTable)
{
delete[] m_JumpTable;
m_JumpTable = NULL;
}
}
void CFunctionMap::Reset(bool bAllocate)
{
CleanBuffers();
if (bAllocate && (g_System->LookUpMode() == FuncFind_VirtualLookup || g_System->LookUpMode() == FuncFind_PhysicalLookup))
{
AllocateMemory();
}
}