78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#include "common/common.h"
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#include "common/common_types.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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enum {
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MEM_BOOTROM_SIZE = 0x00010000, ///< Bootrom (super secret code/data @ 0x8000) size
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MEM_MPCORE_PRIV_SIZE = 0x00002000, ///< MPCore private memory region size
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MEM_VRAM_SIZE = 0x00600000, ///< VRAM size
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MEM_DSP_SIZE = 0x00080000, ///< DSP memory size
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MEM_AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size
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MEM_FCRAM_SIZE = 0x08000000, ///< FCRAM size... Really 0x07E00000, but power of 2
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// works much better
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MEM_SCRATCHPAD_SIZE = 0x00004000, ///< Typical stack size - TODO: Read from exheader
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MEM_VRAM_MASK = 0x007FFFFF,
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MEM_FCRAM_MASK = (MEM_FCRAM_SIZE - 1), ///< FCRAM mask
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MEM_SCRATCHPAD_MASK = (MEM_SCRATCHPAD_SIZE - 1), ///< Scratchpad memory mask
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MEM_FCRAM_PADDR = 0x20000000, ///< FCRAM physical address
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MEM_FCRAM_PADDR_END = (MEM_FCRAM_PADDR + MEM_FCRAM_SIZE), ///< FCRAM end of physical space
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MEM_FCRAM_VADDR = 0x08000000, ///< FCRAM virtual address
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MEM_FCRAM_VADDR_END = (MEM_FCRAM_VADDR + MEM_FCRAM_SIZE), ///< FCRAM end of virtual space
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MEM_VRAM_VADDR = 0x1F000000,
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MEM_SCRATCHPAD_VADDR = (0x10000000 - MEM_SCRATCHPAD_SIZE), ///< Scratchpad virtual address
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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namespace Memory {
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// Base is a pointer to the base of the memory map. Yes, some MMU tricks
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// are used to set up a full GC or Wii memory map in process memory. on
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// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that
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// some things are mirrored too many times, but eh... it works.
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// In 64-bit, this might point to "high memory" (above the 32-bit limit),
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// so be sure to load it into a 64-bit register.
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extern u8 *g_base;
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// These are guaranteed to point to "low memory" addresses (sub-32-bit).
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// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
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// 32-bit: Same as the corresponding physical/virtual pointers.
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extern u8* g_fcram; ///< Main memory
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extern u8* g_vram; ///< Video memory (VRAM)
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extern u8* g_scratchpad; ///< Stack memory
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void Init();
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void Shutdown();
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u8 Read8(const u32 addr);
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u16 Read16(const u32 addr);
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u32 Read32(const u32 addr);
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u32 Read8_ZX(const u32 addr);
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u32 Read16_ZX(const u32 addr);
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void Write8(const u32 addr, const u8 data);
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void Write16(const u32 addr, const u16 data);
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void Write32(const u32 addr, const u32 data);
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u8* GetPointer(const u32 Address);
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inline const char* GetCharPointer(const u32 address) {
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return (const char *)GetPointer(address);
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}
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} // namespace
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