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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#pragma once
#ifdef _WIN32
#include <windows.h>
#endif
#include "common/common_types.h"
// This class lets you create a block of anonymous RAM, and then arbitrarily map views into it.
// Multiple views can mirror the same section of the block, which makes it very convient for emulating
// memory mirrors.
class MemArena
{
public:
void GrabLowMemSpace(size_t size);
void ReleaseSpace();
void *CreateView(s64 offset, size_t size, void *base = 0);
void ReleaseView(void *view, size_t size);
// This only finds 1 GB in 32-bit
static u8 *Find4GBBase();
private:
#ifdef _WIN32
HANDLE hMemoryMapping;
#else
int fd;
#endif
};
enum {
MV_MIRROR_PREVIOUS = 1,
// MV_FAKE_VMEM = 2,
// MV_WII_ONLY = 4,
MV_IS_PRIMARY_RAM = 0x100,
MV_IS_EXTRA1_RAM = 0x200,
MV_IS_EXTRA2_RAM = 0x400,
};
struct MemoryView
{
u8 **out_ptr_low;
u8 **out_ptr;
u32 virtual_address;
u32 size;
u32 flags;
};
// Uses a memory arena to set up an emulator-friendly memory map according to
// a passed-in list of MemoryView structures.
u8 *MemoryMap_Setup(const MemoryView *views, int num_views, u32 flags, MemArena *arena);
void MemoryMap_Shutdown(const MemoryView *views, int num_views, u32 flags, MemArena *arena);
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