// 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 "CommonWindows.h" #endif #ifdef __SYMBIAN32__ #include #endif #include "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, }; 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_