core/memory: Get rid of 3DS leftovers

Removes leftover code from citra that isn't needed.

src/core/CMakeLists.txt

@@ -63,8 +63,6 @@ add_library(core STATIC
     hle/kernel/hle_ipc.h
     hle/kernel/kernel.cpp
     hle/kernel/kernel.h
-    hle/kernel/memory.cpp
-    hle/kernel/memory.h
     hle/kernel/mutex.cpp
     hle/kernel/mutex.h
     hle/kernel/object.cpp

src/core/core.cpp

@@ -110,7 +110,7 @@ System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& file
         }
     }
 
-    ResultStatus init_result{Init(emu_window, system_mode.first.get())};
+    ResultStatus init_result{Init(emu_window)};
     if (init_result != ResultStatus::Success) {
         LOG_CRITICAL(Core, "Failed to initialize system (Error {})!",
                      static_cast<int>(init_result));
@@ -161,7 +161,7 @@ Cpu& System::CpuCore(size_t core_index) {
     return *cpu_cores[core_index];
 }
 
-System::ResultStatus System::Init(EmuWindow& emu_window, u32 system_mode) {
+System::ResultStatus System::Init(EmuWindow& emu_window) {
     LOG_DEBUG(HW_Memory, "initialized OK");
 
     CoreTiming::Init();
@@ -178,7 +178,7 @@ System::ResultStatus System::Init(EmuWindow& emu_window, u32 system_mode) {
     telemetry_session = std::make_unique<Core::TelemetrySession>();
     service_manager = std::make_shared<Service::SM::ServiceManager>();
 
-    Kernel::Init(system_mode);
+    Kernel::Init();
     Service::Init(service_manager);
     GDBStub::Init();
 

src/core/core.h

@@ -189,10 +189,9 @@ private:
      * Initialize the emulated system.
      * @param emu_window Reference to the host-system window used for video output and keyboard
      *                   input.
-     * @param system_mode The system mode.
      * @return ResultStatus code, indicating if the operation succeeded.
      */
-    ResultStatus Init(EmuWindow& emu_window, u32 system_mode);
+    ResultStatus Init(EmuWindow& emu_window);
 
     /// AppLoader used to load the current executing application
     std::unique_ptr<Loader::AppLoader> app_loader;

src/core/hle/kernel/kernel.cpp

@@ -4,7 +4,6 @@
 
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/thread.h"
@@ -15,9 +14,7 @@ namespace Kernel {
 unsigned int Object::next_object_id;
 
 /// Initialize the kernel
-void Init(u32 system_mode) {
-    Kernel::MemoryInit(system_mode);
-
+void Init() {
     Kernel::ResourceLimitsInit();
     Kernel::ThreadingInit();
     Kernel::TimersInit();
@@ -37,7 +34,6 @@ void Shutdown() {
 
     Kernel::TimersShutdown();
     Kernel::ResourceLimitsShutdown();
-    Kernel::MemoryShutdown();
 }
 
 } // namespace Kernel

src/core/hle/kernel/kernel.h

@@ -9,7 +9,7 @@
 namespace Kernel {
 
 /// Initialize the kernel with the specified system mode.
-void Init(u32 system_mode);
+void Init();
 
 /// Shutdown the kernel
 void Shutdown();

src/core/hle/kernel/memory.cpp

@@ -1,90 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <algorithm>
-#include <cinttypes>
-#include <memory>
-#include <utility>
-#include <vector>
-#include "common/assert.h"
-#include "common/common_types.h"
-#include "common/logging/log.h"
-#include "core/hle/kernel/memory.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/kernel/vm_manager.h"
-#include "core/memory.h"
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
-namespace Kernel {
-
-MemoryRegionInfo memory_regions[3];
-
-/// Size of the APPLICATION, SYSTEM and BASE memory regions (respectively) for each system
-/// memory configuration type.
-static const u32 memory_region_sizes[8][3] = {
-    // Old 3DS layouts
-    {0x04000000, 0x02C00000, 0x01400000}, // 0
-    {/* This appears to be unused. */},   // 1
-    {0x06000000, 0x00C00000, 0x01400000}, // 2
-    {0x05000000, 0x01C00000, 0x01400000}, // 3
-    {0x04800000, 0x02400000, 0x01400000}, // 4
-    {0x02000000, 0x04C00000, 0x01400000}, // 5
-
-    // New 3DS layouts
-    {0x07C00000, 0x06400000, 0x02000000}, // 6
-    {0x0B200000, 0x02E00000, 0x02000000}, // 7
-};
-
-void MemoryInit(u32 mem_type) {
-    // TODO(yuriks): On the n3DS, all o3DS configurations (<=5) are forced to 6 instead.
-    ASSERT_MSG(mem_type <= 5, "New 3DS memory configuration aren't supported yet!");
-    ASSERT(mem_type != 1);
-
-    // The kernel allocation regions (APPLICATION, SYSTEM and BASE) are laid out in sequence, with
-    // the sizes specified in the memory_region_sizes table.
-    VAddr base = 0;
-    for (int i = 0; i < 3; ++i) {
-        memory_regions[i].base = base;
-        memory_regions[i].size = memory_region_sizes[mem_type][i];
-        memory_regions[i].used = 0;
-        memory_regions[i].linear_heap_memory = std::make_shared<std::vector<u8>>();
-        // Reserve enough space for this region of FCRAM.
-        // We do not want this block of memory to be relocated when allocating from it.
-        memory_regions[i].linear_heap_memory->reserve(memory_regions[i].size);
-
-        base += memory_regions[i].size;
-    }
-
-    // We must've allocated the entire FCRAM by the end
-    ASSERT(base == Memory::FCRAM_SIZE);
-}
-
-void MemoryShutdown() {
-    for (auto& region : memory_regions) {
-        region.base = 0;
-        region.size = 0;
-        region.used = 0;
-        region.linear_heap_memory = nullptr;
-    }
-}
-
-MemoryRegionInfo* GetMemoryRegion(MemoryRegion region) {
-    switch (region) {
-    case MemoryRegion::APPLICATION:
-        return &memory_regions[0];
-    case MemoryRegion::SYSTEM:
-        return &memory_regions[1];
-    case MemoryRegion::BASE:
-        return &memory_regions[2];
-    default:
-        UNREACHABLE();
-    }
-}
-
-void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping) {}
-
-void MapSharedPages(VMManager& address_space) {}
-
-} // namespace Kernel

src/core/hle/kernel/memory.h

@@ -1,34 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <vector>
-
-#include "common/common_types.h"
-
-namespace Kernel {
-
-class VMManager;
-enum class MemoryRegion : u16;
-struct AddressMapping;
-
-struct MemoryRegionInfo {
-    u64 base; // Not an address, but offset from start of FCRAM
-    u64 size;
-    u64 used;
-
-    std::shared_ptr<std::vector<u8>> linear_heap_memory;
-};
-
-void MemoryInit(u32 mem_type);
-void MemoryShutdown();
-MemoryRegionInfo* GetMemoryRegion(MemoryRegion region);
-
-void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping);
-void MapSharedPages(VMManager& address_space);
-
-extern MemoryRegionInfo memory_regions[3];
-} // namespace Kernel

src/core/hle/kernel/process.cpp

@@ -8,7 +8,6 @@
 #include "common/common_funcs.h"
 #include "common/logging/log.h"
 #include "core/hle/kernel/errors.h"
-#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/thread.h"
@@ -125,14 +124,6 @@ void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
                         std::make_shared<std::vector<u8>>(stack_size, 0), 0, stack_size,
                         MemoryState::Mapped)
         .Unwrap();
-    misc_memory_used += stack_size;
-    memory_region->used += stack_size;
-
-    // Map special address mappings
-    MapSharedPages(vm_manager);
-    for (const auto& mapping : address_mappings) {
-        HandleSpecialMapping(vm_manager, mapping);
-    }
 
     vm_manager.LogLayout();
     status = ProcessStatus::Running;
@@ -141,17 +132,13 @@ void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
 }
 
 void Process::LoadModule(SharedPtr<CodeSet> module_, VAddr base_addr) {
-    memory_region = GetMemoryRegion(flags.memory_region);
-
-    auto MapSegment = [&](CodeSet::Segment& segment, VMAPermission permissions,
-                          MemoryState memory_state) {
+    const auto MapSegment = [&](CodeSet::Segment& segment, VMAPermission permissions,
+                                MemoryState memory_state) {
         auto vma = vm_manager
                        .MapMemoryBlock(segment.addr + base_addr, module_->memory, segment.offset,
                                        segment.size, memory_state)
                        .Unwrap();
         vm_manager.Reprotect(vma, permissions);
-        misc_memory_used += segment.size;
-        memory_region->used += segment.size;
     };
 
     // Map CodeSet segments
@@ -160,20 +147,6 @@ void Process::LoadModule(SharedPtr<CodeSet> module_, VAddr base_addr) {
     MapSegment(module_->data, VMAPermission::ReadWrite, MemoryState::CodeMutable);
 }
 
-VAddr Process::GetLinearHeapAreaAddress() const {
-    // Starting from system version 8.0.0 a new linear heap layout is supported to allow usage of
-    // the extra RAM in the n3DS.
-    return kernel_version < 0x22C ? Memory::LINEAR_HEAP_VADDR : Memory::NEW_LINEAR_HEAP_VADDR;
-}
-
-VAddr Process::GetLinearHeapBase() const {
-    return GetLinearHeapAreaAddress() + memory_region->base;
-}
-
-VAddr Process::GetLinearHeapLimit() const {
-    return GetLinearHeapBase() + memory_region->size;
-}
-
 ResultVal<VAddr> Process::HeapAllocate(VAddr target, u64 size, VMAPermission perms) {
     if (target < Memory::HEAP_VADDR || target + size > Memory::HEAP_VADDR_END ||
         target + size < target) {
@@ -206,7 +179,6 @@ ResultVal<VAddr> Process::HeapAllocate(VAddr target, u64 size, VMAPermission per
     vm_manager.Reprotect(vma, perms);
 
     heap_used = size;
-    memory_region->used += size;
 
     return MakeResult<VAddr>(heap_end - size);
 }
@@ -226,52 +198,6 @@ ResultCode Process::HeapFree(VAddr target, u32 size) {
         return result;
 
     heap_used -= size;
-    memory_region->used -= size;
-
-    return RESULT_SUCCESS;
-}
-
-ResultVal<VAddr> Process::LinearAllocate(VAddr target, u32 size, VMAPermission perms) {
-    UNIMPLEMENTED();
-    return {};
-}
-
-ResultCode Process::LinearFree(VAddr target, u32 size) {
-    auto& linheap_memory = memory_region->linear_heap_memory;
-
-    if (target < GetLinearHeapBase() || target + size > GetLinearHeapLimit() ||
-        target + size < target) {
-
-        return ERR_INVALID_ADDRESS;
-    }
-
-    if (size == 0) {
-        return RESULT_SUCCESS;
-    }
-
-    VAddr heap_end = GetLinearHeapBase() + (u32)linheap_memory->size();
-    if (target + size > heap_end) {
-        return ERR_INVALID_ADDRESS_STATE;
-    }
-
-    ResultCode result = vm_manager.UnmapRange(target, size);
-    if (result.IsError())
-        return result;
-
-    linear_heap_used -= size;
-    memory_region->used -= size;
-
-    if (target + size == heap_end) {
-        // End of linear heap has been freed, so check what's the last allocated block in it and
-        // reduce the size.
-        auto vma = vm_manager.FindVMA(target);
-        ASSERT(vma != vm_manager.vma_map.end());
-        ASSERT(vma->second.type == VMAType::Free);
-        VAddr new_end = vma->second.base;
-        if (new_end >= GetLinearHeapBase()) {
-            linheap_memory->resize(new_end - GetLinearHeapBase());
-        }
-    }
 
     return RESULT_SUCCESS;
 }

src/core/hle/kernel/process.h

@@ -53,7 +53,6 @@ union ProcessFlags {
 enum class ProcessStatus { Created, Running, Exited };
 
 class ResourceLimit;
-struct MemoryRegionInfo;
 
 struct CodeSet final : public Object {
     static SharedPtr<CodeSet> Create(std::string name);
@@ -163,12 +162,11 @@ public:
     // This makes deallocation and reallocation of holes fast and keeps process memory contiguous
     // in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
     std::shared_ptr<std::vector<u8>> heap_memory;
-    // The left/right bounds of the address space covered by heap_memory.
-    VAddr heap_start = 0, heap_end = 0;
-
-    u64 heap_used = 0, linear_heap_used = 0, misc_memory_used = 0;
 
-    MemoryRegionInfo* memory_region = nullptr;
+    // The left/right bounds of the address space covered by heap_memory.
+    VAddr heap_start = 0;
+    VAddr heap_end = 0;
+    u64 heap_used = 0;
 
     /// The Thread Local Storage area is allocated as processes create threads,
     /// each TLS area is 0x200 bytes, so one page (0x1000) is split up in 8 parts, and each part
@@ -179,16 +177,9 @@ public:
 
     std::string name;
 
-    VAddr GetLinearHeapAreaAddress() const;
-    VAddr GetLinearHeapBase() const;
-    VAddr GetLinearHeapLimit() const;
-
     ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms);
     ResultCode HeapFree(VAddr target, u32 size);
 
-    ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
-    ResultCode LinearFree(VAddr target, u32 size);
-
     ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
 
     ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size);

src/core/hle/kernel/shared_memory.cpp

@@ -8,7 +8,6 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/hle/kernel/errors.h"
-#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/shared_memory.h"
 #include "core/memory.h"
 
@@ -29,51 +28,22 @@ SharedPtr<SharedMemory> SharedMemory::Create(SharedPtr<Process> owner_process, u
     shared_memory->permissions = permissions;
     shared_memory->other_permissions = other_permissions;
 
-    if (address == 0) {
-        // We need to allocate a block from the Linear Heap ourselves.
-        // We'll manually allocate some memory from the linear heap in the specified region.
-        MemoryRegionInfo* memory_region = GetMemoryRegion(region);
-        auto& linheap_memory = memory_region->linear_heap_memory;
-
-        ASSERT_MSG(linheap_memory->size() + size <= memory_region->size,
-                   "Not enough space in region to allocate shared memory!");
-
-        shared_memory->backing_block = linheap_memory;
-        shared_memory->backing_block_offset = linheap_memory->size();
-        // Allocate some memory from the end of the linear heap for this region.
-        linheap_memory->insert(linheap_memory->end(), size, 0);
-        memory_region->used += size;
-
-        shared_memory->linear_heap_phys_address =
-            Memory::FCRAM_PADDR + memory_region->base +
-            static_cast<PAddr>(shared_memory->backing_block_offset);
-
-        // Increase the amount of used linear heap memory for the owner process.
-        if (shared_memory->owner_process != nullptr) {
-            shared_memory->owner_process->linear_heap_used += size;
-        }
-
-        // Refresh the address mappings for the current process.
-        if (Core::CurrentProcess() != nullptr) {
-            Core::CurrentProcess()->vm_manager.RefreshMemoryBlockMappings(linheap_memory.get());
-        }
-    } else {
-        auto& vm_manager = shared_memory->owner_process->vm_manager;
-        // The memory is already available and mapped in the owner process.
-        auto vma = vm_manager.FindVMA(address);
-        ASSERT_MSG(vma != vm_manager.vma_map.end(), "Invalid memory address");
-        ASSERT_MSG(vma->second.backing_block, "Backing block doesn't exist for address");
-
-        // The returned VMA might be a bigger one encompassing the desired address.
-        auto vma_offset = address - vma->first;
-        ASSERT_MSG(vma_offset + size <= vma->second.size,
-                   "Shared memory exceeds bounds of mapped block");
-
-        shared_memory->backing_block = vma->second.backing_block;
-        shared_memory->backing_block_offset = vma->second.offset + vma_offset;
-    }
+    auto& vm_manager = shared_memory->owner_process->vm_manager;
+
+    // The memory is already available and mapped in the owner process.
+    auto vma = vm_manager.FindVMA(address);
+    ASSERT_MSG(vma != vm_manager.vma_map.end(), "Invalid memory address");
+    ASSERT_MSG(vma->second.backing_block, "Backing block doesn't exist for address");
+
+    // The returned VMA might be a bigger one encompassing the desired address.
+    auto vma_offset = address - vma->first;
+    ASSERT_MSG(vma_offset + size <= vma->second.size,
+               "Shared memory exceeds bounds of mapped block");
 
+    shared_memory->backing_block = vma->second.backing_block;
+    shared_memory->backing_block_offset = vma->second.offset + vma_offset;
     shared_memory->base_address = address;
+
     return shared_memory;
 }
 
@@ -124,11 +94,6 @@ ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermi
 
     VAddr target_address = address;
 
-    if (base_address == 0 && target_address == 0) {
-        // Calculate the address at which to map the memory block.
-        target_address = Memory::PhysicalToVirtualAddress(linear_heap_phys_address).value();
-    }
-
     // Map the memory block into the target process
     auto result = target_process->vm_manager.MapMemoryBlock(
         target_address, backing_block, backing_block_offset, size, MemoryState::Shared);

src/core/hle/kernel/shared_memory.h

@@ -111,9 +111,6 @@ public:
     SharedPtr<Process> owner_process;
     /// Address of shared memory block in the owner process if specified.
     VAddr base_address;
-    /// Physical address of the shared memory block in the linear heap if no address was specified
-    /// during creation.
-    PAddr linear_heap_phys_address;
     /// Backing memory for this shared memory block.
     std::shared_ptr<std::vector<u8>> backing_block;
     /// Offset into the backing block for this shared memory.

src/core/hle/kernel/thread.cpp

@@ -20,7 +20,6 @@
 #include "core/core_timing_util.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
-#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/thread.h"
@@ -81,8 +80,8 @@ void Thread::Stop() {
     wait_objects.clear();
 
     // Mark the TLS slot in the thread's page as free.
-    u64 tls_page = (tls_address - Memory::TLS_AREA_VADDR) / Memory::PAGE_SIZE;
-    u64 tls_slot =
+    const u64 tls_page = (tls_address - Memory::TLS_AREA_VADDR) / Memory::PAGE_SIZE;
+    const u64 tls_slot =
         ((tls_address - Memory::TLS_AREA_VADDR) % Memory::PAGE_SIZE) / Memory::TLS_ENTRY_SIZE;
     Core::CurrentProcess()->tls_slots[tls_page].reset(tls_slot);
 }
@@ -336,38 +335,10 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
     auto& tls_slots = owner_process->tls_slots;
 
     auto [available_page, available_slot, needs_allocation] = GetFreeThreadLocalSlot(tls_slots);
-
     if (needs_allocation) {
-        // There are no already-allocated pages with free slots, lets allocate a new one.
-        // TLS pages are allocated from the BASE region in the linear heap.
-        MemoryRegionInfo* memory_region = GetMemoryRegion(MemoryRegion::BASE);
-        auto& linheap_memory = memory_region->linear_heap_memory;
-
-        if (linheap_memory->size() + Memory::PAGE_SIZE > memory_region->size) {
-            LOG_ERROR(Kernel_SVC,
-                      "Not enough space in region to allocate a new TLS page for thread");
-            return ERR_OUT_OF_MEMORY;
-        }
-
-        size_t offset = linheap_memory->size();
-
-        // Allocate some memory from the end of the linear heap for this region.
-        linheap_memory->insert(linheap_memory->end(), Memory::PAGE_SIZE, 0);
-        memory_region->used += Memory::PAGE_SIZE;
-        owner_process->linear_heap_used += Memory::PAGE_SIZE;
-
         tls_slots.emplace_back(0); // The page is completely available at the start
         available_page = tls_slots.size() - 1;
         available_slot = 0; // Use the first slot in the new page
-
-        auto& vm_manager = owner_process->vm_manager;
-        vm_manager.RefreshMemoryBlockMappings(linheap_memory.get());
-
-        // Map the page to the current process' address space.
-        // TODO(Subv): Find the correct MemoryState for this region.
-        vm_manager.MapMemoryBlock(Memory::TLS_AREA_VADDR + available_page * Memory::PAGE_SIZE,
-                                  linheap_memory, offset, Memory::PAGE_SIZE,
-                                  MemoryState::ThreadLocal);
     }
 
     // Mark the slot as used

src/core/memory.cpp

@@ -14,7 +14,6 @@
 #include "common/swap.h"
 #include "core/arm/arm_interface.h"
 #include "core/core.h"
-#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/lock.h"
 #include "core/memory.h"
@@ -24,8 +23,6 @@
 
 namespace Memory {
 
-static std::array<u8, Memory::VRAM_SIZE> vram;
-
 static PageTable* current_page_table = nullptr;
 
 void SetCurrentPageTable(PageTable* page_table) {
@@ -242,10 +239,6 @@ bool IsKernelVirtualAddress(const VAddr vaddr) {
     return KERNEL_REGION_VADDR <= vaddr && vaddr < KERNEL_REGION_END;
 }
 
-bool IsValidPhysicalAddress(const PAddr paddr) {
-    return GetPhysicalPointer(paddr) != nullptr;
-}
-
 u8* GetPointer(const VAddr vaddr) {
     u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
     if (page_pointer) {
@@ -274,61 +267,6 @@ std::string ReadCString(VAddr vaddr, std::size_t max_length) {
     return string;
 }
 
-u8* GetPhysicalPointer(PAddr address) {
-    struct MemoryArea {
-        PAddr paddr_base;
-        u32 size;
-    };
-
-    static constexpr MemoryArea memory_areas[] = {
-        {VRAM_PADDR, VRAM_SIZE},
-        {IO_AREA_PADDR, IO_AREA_SIZE},
-        {DSP_RAM_PADDR, DSP_RAM_SIZE},
-        {FCRAM_PADDR, FCRAM_N3DS_SIZE},
-    };
-
-    const auto area =
-        std::find_if(std::begin(memory_areas), std::end(memory_areas), [&](const auto& area) {
-            return address >= area.paddr_base && address < area.paddr_base + area.size;
-        });
-
-    if (area == std::end(memory_areas)) {
-        LOG_ERROR(HW_Memory, "Unknown GetPhysicalPointer @ 0x{:016X}", address);
-        return nullptr;
-    }
-
-    if (area->paddr_base == IO_AREA_PADDR) {
-        LOG_ERROR(HW_Memory, "MMIO mappings are not supported yet. phys_addr={:016X}", address);
-        return nullptr;
-    }
-
-    u64 offset_into_region = address - area->paddr_base;
-
-    u8* target_pointer = nullptr;
-    switch (area->paddr_base) {
-    case VRAM_PADDR:
-        target_pointer = vram.data() + offset_into_region;
-        break;
-    case DSP_RAM_PADDR:
-        break;
-    case FCRAM_PADDR:
-        for (const auto& region : Kernel::memory_regions) {
-            if (offset_into_region >= region.base &&
-                offset_into_region < region.base + region.size) {
-                target_pointer =
-                    region.linear_heap_memory->data() + offset_into_region - region.base;
-                break;
-            }
-        }
-        ASSERT_MSG(target_pointer != nullptr, "Invalid FCRAM address");
-        break;
-    default:
-        UNREACHABLE();
-    }
-
-    return target_pointer;
-}
-
 void RasterizerMarkRegionCached(Tegra::GPUVAddr gpu_addr, u64 size, bool cached) {
     if (gpu_addr == 0) {
         return;
@@ -666,48 +604,4 @@ void CopyBlock(VAddr dest_addr, VAddr src_addr, size_t size) {
     CopyBlock(*Core::CurrentProcess(), dest_addr, src_addr, size);
 }
 
-boost::optional<PAddr> TryVirtualToPhysicalAddress(const VAddr addr) {
-    if (addr == 0) {
-        return 0;
-    } else if (addr >= VRAM_VADDR && addr < VRAM_VADDR_END) {
-        return addr - VRAM_VADDR + VRAM_PADDR;
-    } else if (addr >= LINEAR_HEAP_VADDR && addr < LINEAR_HEAP_VADDR_END) {
-        return addr - LINEAR_HEAP_VADDR + FCRAM_PADDR;
-    } else if (addr >= NEW_LINEAR_HEAP_VADDR && addr < NEW_LINEAR_HEAP_VADDR_END) {
-        return addr - NEW_LINEAR_HEAP_VADDR + FCRAM_PADDR;
-    } else if (addr >= DSP_RAM_VADDR && addr < DSP_RAM_VADDR_END) {
-        return addr - DSP_RAM_VADDR + DSP_RAM_PADDR;
-    } else if (addr >= IO_AREA_VADDR && addr < IO_AREA_VADDR_END) {
-        return addr - IO_AREA_VADDR + IO_AREA_PADDR;
-    }
-
-    return boost::none;
-}
-
-PAddr VirtualToPhysicalAddress(const VAddr addr) {
-    auto paddr = TryVirtualToPhysicalAddress(addr);
-    if (!paddr) {
-        LOG_ERROR(HW_Memory, "Unknown virtual address @ 0x{:016X}", addr);
-        // To help with debugging, set bit on address so that it's obviously invalid.
-        return addr | 0x80000000;
-    }
-    return *paddr;
-}
-
-boost::optional<VAddr> PhysicalToVirtualAddress(const PAddr addr) {
-    if (addr == 0) {
-        return 0;
-    } else if (addr >= VRAM_PADDR && addr < VRAM_PADDR_END) {
-        return addr - VRAM_PADDR + VRAM_VADDR;
-    } else if (addr >= FCRAM_PADDR && addr < FCRAM_PADDR_END) {
-        return addr - FCRAM_PADDR + Core::CurrentProcess()->GetLinearHeapAreaAddress();
-    } else if (addr >= DSP_RAM_PADDR && addr < DSP_RAM_PADDR_END) {
-        return addr - DSP_RAM_PADDR + DSP_RAM_VADDR;
-    } else if (addr >= IO_AREA_PADDR && addr < IO_AREA_PADDR_END) {
-        return addr - IO_AREA_PADDR + IO_AREA_VADDR;
-    }
-
-    return boost::none;
-}
-
 } // namespace Memory

src/core/memory.h

@@ -6,12 +6,9 @@
 
 #include <array>
 #include <cstddef>
-#include <map>
 #include <string>
 #include <tuple>
-#include <vector>
 #include <boost/icl/interval_map.hpp>
-#include <boost/optional.hpp>
 #include "common/common_types.h"
 #include "core/memory_hook.h"
 #include "video_core/memory_manager.h"
@@ -85,40 +82,6 @@ struct PageTable {
     std::array<PageType, PAGE_TABLE_NUM_ENTRIES> attributes;
 };
 
-/// Physical memory regions as seen from the ARM11
-enum : PAddr {
-    /// IO register area
-    IO_AREA_PADDR = 0x10100000,
-    IO_AREA_SIZE = 0x01000000, ///< IO area size (16MB)
-    IO_AREA_PADDR_END = IO_AREA_PADDR + IO_AREA_SIZE,
-
-    /// MPCore internal memory region
-    MPCORE_RAM_PADDR = 0x17E00000,
-    MPCORE_RAM_SIZE = 0x00002000, ///< MPCore internal memory size (8KB)
-    MPCORE_RAM_PADDR_END = MPCORE_RAM_PADDR + MPCORE_RAM_SIZE,
-
-    /// Video memory
-    VRAM_PADDR = 0x18000000,
-    VRAM_SIZE = 0x00600000, ///< VRAM size (6MB)
-    VRAM_PADDR_END = VRAM_PADDR + VRAM_SIZE,
-
-    /// DSP memory
-    DSP_RAM_PADDR = 0x1FF00000,
-    DSP_RAM_SIZE = 0x00080000, ///< DSP memory size (512KB)
-    DSP_RAM_PADDR_END = DSP_RAM_PADDR + DSP_RAM_SIZE,
-
-    /// AXI WRAM
-    AXI_WRAM_PADDR = 0x1FF80000,
-    AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size (512KB)
-    AXI_WRAM_PADDR_END = AXI_WRAM_PADDR + AXI_WRAM_SIZE,
-
-    /// Main FCRAM
-    FCRAM_PADDR = 0x20000000,
-    FCRAM_SIZE = 0x08000000,      ///< FCRAM size on the Old 3DS (128MB)
-    FCRAM_N3DS_SIZE = 0x10000000, ///< FCRAM size on the New 3DS (256MB)
-    FCRAM_PADDR_END = FCRAM_PADDR + FCRAM_SIZE,
-};
-
 /// Virtual user-space memory regions
 enum : VAddr {
     /// Where the application text, data and bss reside.
@@ -126,24 +89,6 @@ enum : VAddr {
     PROCESS_IMAGE_MAX_SIZE = 0x08000000,
     PROCESS_IMAGE_VADDR_END = PROCESS_IMAGE_VADDR + PROCESS_IMAGE_MAX_SIZE,
 
-    /// Maps 1:1 to an offset in FCRAM. Used for HW allocations that need to be linear in physical
-    /// memory.
-    LINEAR_HEAP_VADDR = 0x14000000,
-    LINEAR_HEAP_SIZE = 0x08000000,
-    LINEAR_HEAP_VADDR_END = LINEAR_HEAP_VADDR + LINEAR_HEAP_SIZE,
-
-    /// Maps 1:1 to the IO register area.
-    IO_AREA_VADDR = 0x1EC00000,
-    IO_AREA_VADDR_END = IO_AREA_VADDR + IO_AREA_SIZE,
-
-    /// Maps 1:1 to VRAM.
-    VRAM_VADDR = 0x1F000000,
-    VRAM_VADDR_END = VRAM_VADDR + VRAM_SIZE,
-
-    /// Maps 1:1 to DSP memory.
-    DSP_RAM_VADDR = 0x1FF00000,
-    DSP_RAM_VADDR_END = DSP_RAM_VADDR + DSP_RAM_SIZE,
-
     /// Read-only page containing kernel and system configuration values.
     CONFIG_MEMORY_VADDR = 0x1FF80000,
     CONFIG_MEMORY_SIZE = 0x00001000,
@@ -154,13 +99,8 @@ enum : VAddr {
     SHARED_PAGE_SIZE = 0x00001000,
     SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE,
 
-    /// Equivalent to LINEAR_HEAP_VADDR, but expanded to cover the extra memory in the New 3DS.
-    NEW_LINEAR_HEAP_VADDR = 0x30000000,
-    NEW_LINEAR_HEAP_SIZE = 0x10000000,
-    NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
-
     /// Area where TLS (Thread-Local Storage) buffers are allocated.
-    TLS_AREA_VADDR = NEW_LINEAR_HEAP_VADDR_END,
+    TLS_AREA_VADDR = 0x40000000,
     TLS_ENTRY_SIZE = 0x200,
     TLS_AREA_SIZE = 0x10000000,
     TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE,
@@ -205,8 +145,6 @@ bool IsValidVirtualAddress(const VAddr addr);
 /// Determines if the given VAddr is a kernel address
 bool IsKernelVirtualAddress(const VAddr addr);
 
-bool IsValidPhysicalAddress(const PAddr addr);
-
 u8 Read8(VAddr addr);
 u16 Read16(VAddr addr);
 u32 Read32(VAddr addr);
@@ -230,30 +168,6 @@ u8* GetPointer(VAddr virtual_address);
 
 std::string ReadCString(VAddr virtual_address, std::size_t max_length);
 
-/**
- * Converts a virtual address inside a region with 1:1 mapping to physical memory to a physical
- * address. This should be used by services to translate addresses for use by the hardware.
- */
-boost::optional<PAddr> TryVirtualToPhysicalAddress(VAddr addr);
-
-/**
- * Converts a virtual address inside a region with 1:1 mapping to physical memory to a physical
- * address. This should be used by services to translate addresses for use by the hardware.
- *
- * @deprecated Use TryVirtualToPhysicalAddress(), which reports failure.
- */
-PAddr VirtualToPhysicalAddress(VAddr addr);
-
-/**
- * Undoes a mapping performed by VirtualToPhysicalAddress().
- */
-boost::optional<VAddr> PhysicalToVirtualAddress(PAddr addr);
-
-/**
- * Gets a pointer to the memory region beginning at the specified physical address.
- */
-u8* GetPhysicalPointer(PAddr address);
-
 enum class FlushMode {
     /// Write back modified surfaces to RAM
     Flush,

src/tests/CMakeLists.txt

@@ -3,7 +3,6 @@ add_executable(tests
     core/arm/arm_test_common.cpp
     core/arm/arm_test_common.h
     core/core_timing.cpp
-    core/memory/memory.cpp
     glad.cpp
     tests.cpp
 )

src/tests/core/memory/memory.cpp

@@ -1,56 +0,0 @@
-// Copyright 2017 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <catch.hpp>
-#include "core/hle/kernel/memory.h"
-#include "core/hle/kernel/process.h"
-#include "core/memory.h"
-
-TEST_CASE("Memory::IsValidVirtualAddress", "[core][memory][!hide]") {
-    SECTION("these regions should not be mapped on an empty process") {
-        auto process = Kernel::Process::Create("");
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::PROCESS_IMAGE_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::HEAP_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::LINEAR_HEAP_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == false);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::TLS_AREA_VADDR) == false);
-    }
-
-    SECTION("CONFIG_MEMORY_VADDR and SHARED_PAGE_VADDR should be valid after mapping them") {
-        auto process = Kernel::Process::Create("");
-        Kernel::MapSharedPages(process->vm_manager);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == true);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == true);
-    }
-
-    SECTION("special regions should be valid after mapping them") {
-        auto process = Kernel::Process::Create("");
-        SECTION("VRAM") {
-            Kernel::HandleSpecialMapping(process->vm_manager,
-                                         {Memory::VRAM_VADDR, Memory::VRAM_SIZE, false, false});
-            CHECK(Memory::IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == true);
-        }
-
-        SECTION("IO (Not yet implemented)") {
-            Kernel::HandleSpecialMapping(
-                process->vm_manager, {Memory::IO_AREA_VADDR, Memory::IO_AREA_SIZE, false, false});
-            CHECK_FALSE(Memory::IsValidVirtualAddress(*process, Memory::IO_AREA_VADDR) == true);
-        }
-
-        SECTION("DSP") {
-            Kernel::HandleSpecialMapping(
-                process->vm_manager, {Memory::DSP_RAM_VADDR, Memory::DSP_RAM_SIZE, false, false});
-            CHECK(Memory::IsValidVirtualAddress(*process, Memory::DSP_RAM_VADDR) == true);
-        }
-    }
-
-    SECTION("Unmapping a VAddr should make it invalid") {
-        auto process = Kernel::Process::Create("");
-        Kernel::MapSharedPages(process->vm_manager);
-        process->vm_manager.UnmapRange(Memory::CONFIG_MEMORY_VADDR, Memory::CONFIG_MEMORY_SIZE);
-        CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false);
-    }
-}