From 63e46abdb8764bc97e91bae862c8d461e61b1965 Mon Sep 17 00:00:00 2001 From: bunnei Date: Tue, 8 Apr 2014 19:25:03 -0400 Subject: got rid of 'src' folders in each sub-project --- src/core/mem_map.h | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 src/core/mem_map.h (limited to 'src/core/mem_map.h') diff --git a/src/core/mem_map.h b/src/core/mem_map.h new file mode 100644 index 00000000..ad5abd16 --- /dev/null +++ b/src/core/mem_map.h @@ -0,0 +1,73 @@ +// Copyright 2014 Citra Emulator Project +// Licensed under GPLv2 +// Refer to the license.txt file included. + +#pragma once + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +#include "common.h" +#include "common_types.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +enum { + MEM_BOOTROM_SIZE = 0x00010000, ///< Bootrom (super secret code/data @ 0x8000) size + MEM_MPCORE_PRIV_SIZE = 0x00002000, ///< MPCore private memory region size + MEM_VRAM_SIZE = 0x00600000, ///< VRAM size + MEM_DSP_SIZE = 0x00080000, ///< DSP memory size + MEM_AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size + MEM_FCRAM_SIZE = 0x08000000, ///< FCRAM size... Really 0x07E00000, but power of 2 + // works much better + MEM_SCRATCHPAD_SIZE = 0x00004000, ///< Typical stack size - TODO: Read from exheader + + MEM_VRAM_MASK = 0x007FFFFF, + MEM_FCRAM_MASK = (MEM_FCRAM_SIZE - 1), ///< FCRAM mask + MEM_SCRATCHPAD_MASK = (MEM_SCRATCHPAD_SIZE - 1), ///< Scratchpad memory mask + + MEM_FCRAM_PADDR = 0x20000000, ///< FCRAM physical address + MEM_FCRAM_PADDR_END = (MEM_FCRAM_PADDR + MEM_FCRAM_SIZE), ///< FCRAM end of physical space + MEM_FCRAM_VADDR = 0x08000000, ///< FCRAM virtual address + MEM_FCRAM_VADDR_END = (MEM_FCRAM_VADDR + MEM_FCRAM_SIZE), ///< FCRAM end of virtual space + + MEM_VRAM_VADDR = 0x1F000000, + MEM_SCRATCHPAD_VADDR = (0x10000000 - MEM_SCRATCHPAD_SIZE), ///< Scratchpad virtual address +}; + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +namespace Memory { + +// Base is a pointer to the base of the memory map. Yes, some MMU tricks +// are used to set up a full GC or Wii memory map in process memory. on +// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that +// some things are mirrored too many times, but eh... it works. + +// In 64-bit, this might point to "high memory" (above the 32-bit limit), +// so be sure to load it into a 64-bit register. +extern u8 *g_base; + +// These are guaranteed to point to "low memory" addresses (sub-32-bit). +// 64-bit: Pointers to low-mem (sub-0x10000000) mirror +// 32-bit: Same as the corresponding physical/virtual pointers. +extern u8* g_fcram; ///< Main memory +extern u8* g_vram; ///< Video memory (VRAM) +extern u8* g_scratchpad; ///< Stack memory + +void Init(); +void Shutdown(); + +u8 Read8(const u32 addr); +u16 Read16(const u32 addr); +u32 Read32(const u32 addr); + +u32 Read8_ZX(const u32 addr); +u32 Read16_ZX(const u32 addr); + +void Write8(const u32 addr, const u8 data); +void Write16(const u32 addr, const u16 data); +void Write32(const u32 addr, const u32 data); + +u8* GetPointer(const u32 Address); + +} // namespace -- cgit v1.2.3