81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
// 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/
|
|
|
|
#ifndef _MEMARENA_H_
|
|
#define _MEMARENA_H_
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#ifdef __SYMBIAN32__
|
|
#include <e32std.h>
|
|
#endif
|
|
|
|
#include "common/common.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);
|
|
|
|
#ifdef __SYMBIAN32__
|
|
RChunk* memmap;
|
|
#else
|
|
// This only finds 1 GB in 32-bit
|
|
static u8 *Find4GBBase();
|
|
#endif
|
|
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);
|
|
|
|
#endif // _MEMARENA_H_
|