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author | bunnei <ericbunnie@gmail.com> | 2014-04-09 01:25:03 +0200 |
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committer | bunnei <ericbunnie@gmail.com> | 2014-04-09 01:25:03 +0200 |
commit | 63e46abdb8764bc97e91bae862c8d461e61b1965 (patch) | |
tree | e73f4aa25d7b4015a265e7bbfb6004dab7561027 /src/common/mem_arena.h | |
parent | fixed some license headers that I missed (diff) | |
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Diffstat (limited to 'src/common/mem_arena.h')
-rw-r--r-- | src/common/mem_arena.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/common/mem_arena.h b/src/common/mem_arena.h new file mode 100644 index 000000000..8bdf9f189 --- /dev/null +++ b/src/common/mem_arena.h @@ -0,0 +1,81 @@ +// 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.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_ |