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https://github.com/Lime3DS/Lime3DS
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88 lines
3.9 KiB
C++
88 lines
3.9 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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#include "common/common.h"
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#include "common/mem_arena.h"
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#include "core/mem_map.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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namespace Memory {
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u8* g_base = nullptr; ///< The base pointer to the auto-mirrored arena.
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static MemArena arena; ///< The MemArena class
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u8* g_exefs_code = nullptr; ///< ExeFS:/.code is loaded here
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u8* g_system_mem = nullptr; ///< System memory
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u8* g_heap = nullptr; ///< Application heap (main memory)
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u8* g_heap_linear = nullptr; ///< Linear heap
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u8* g_vram = nullptr; ///< Video memory (VRAM) pointer
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u8* g_shared_mem = nullptr; ///< Shared memory
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u8* g_kernel_mem; ///< Kernel memory
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static u8* physical_bootrom = nullptr; ///< Bootrom physical memory
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static u8* uncached_bootrom = nullptr;
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static u8* physical_exefs_code = nullptr; ///< Phsical ExeFS:/.code is loaded here
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static u8* physical_system_mem = nullptr; ///< System physical memory
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static u8* physical_fcram = nullptr; ///< Main physical memory (FCRAM)
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static u8* physical_heap_gsp = nullptr; ///< GSP heap physical memory
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static u8* physical_vram = nullptr; ///< Video physical memory (VRAM)
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static u8* physical_shared_mem = nullptr; ///< Physical shared memory
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static u8* physical_kernel_mem; ///< Kernel memory
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// We don't declare the IO region in here since its handled by other means.
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static MemoryView g_views[] = {
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{&g_exefs_code, &physical_exefs_code, EXEFS_CODE_VADDR, EXEFS_CODE_SIZE, 0},
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{&g_vram, &physical_vram, VRAM_VADDR, VRAM_SIZE, 0},
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{&g_heap, &physical_fcram, HEAP_VADDR, HEAP_SIZE, MV_IS_PRIMARY_RAM},
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{&g_shared_mem, &physical_shared_mem, SHARED_MEMORY_VADDR, SHARED_MEMORY_SIZE, 0},
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{&g_system_mem, &physical_system_mem, SYSTEM_MEMORY_VADDR, SYSTEM_MEMORY_SIZE, 0},
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{&g_kernel_mem, &physical_kernel_mem, KERNEL_MEMORY_VADDR, KERNEL_MEMORY_SIZE, 0},
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{&g_heap_linear, &physical_heap_gsp, HEAP_LINEAR_VADDR, HEAP_LINEAR_SIZE, 0},
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};
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/*static MemoryView views[] =
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{
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{&m_pScratchPad, &m_pPhysicalScratchPad, 0x00010000, SCRATCHPAD_SIZE, 0},
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{NULL, &m_pUncachedScratchPad, 0x40010000, SCRATCHPAD_SIZE, MV_MIRROR_PREVIOUS},
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{&m_pVRAM, &m_pPhysicalVRAM, 0x04000000, 0x00800000, 0},
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{NULL, &m_pUncachedVRAM, 0x44000000, 0x00800000, MV_MIRROR_PREVIOUS},
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{&m_pRAM, &m_pPhysicalRAM, 0x08000000, g_MemorySize, MV_IS_PRIMARY_RAM}, // only from 0x08800000 is it usable (last 24 megs)
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{NULL, &m_pUncachedRAM, 0x48000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
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{NULL, &m_pKernelRAM, 0x88000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
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// TODO: There are a few swizzled mirrors of VRAM, not sure about the best way to
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// implement those.
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};*/
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static const int kNumMemViews = sizeof(g_views) / sizeof(MemoryView); ///< Number of mem views
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void Init() {
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int flags = 0;
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for (size_t i = 0; i < ARRAY_SIZE(g_views); i++) {
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if (g_views[i].flags & MV_IS_PRIMARY_RAM)
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g_views[i].size = FCRAM_SIZE;
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}
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g_base = MemoryMap_Setup(g_views, kNumMemViews, flags, &arena);
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LOG_DEBUG(HW_Memory, "initialized OK, RAM at %p (mirror at 0 @ %p)", g_heap,
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physical_fcram);
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}
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void Shutdown() {
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u32 flags = 0;
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MemoryMap_Shutdown(g_views, kNumMemViews, flags, &arena);
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arena.ReleaseSpace();
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g_base = nullptr;
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LOG_DEBUG(HW_Memory, "shutdown OK");
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}
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} // namespace
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