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core/memory: Get rid of 3DS leftovers

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Removes leftover code from citra that isn't needed.
This commit is contained in:
Lioncash
2018-08-02 23:37:44 -04:00
parent 00ba704a7f
commit 26de4bb521
16 changed files with 27 additions and 557 deletions
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6
src/core/hle/kernel/kernel.cpp
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@@ -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

2
src/core/hle/kernel/kernel.h
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@@ -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();

90
src/core/hle/kernel/memory.cpp
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@@ -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

34
src/core/hle/kernel/memory.h
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@@ -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

78
src/core/hle/kernel/process.cpp
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@@ -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;
}

17
src/core/hle/kernel/process.h
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@@ -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;
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);

59
src/core/hle/kernel/shared_memory.cpp
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@@ -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;
auto& vm_manager = shared_memory->owner_process->vm_manager;
ASSERT_MSG(linheap_memory->size() + size <= memory_region->size,
"Not enough space in region to allocate shared memory!");
// 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");
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;
}
// 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);

3
src/core/hle/kernel/shared_memory.h
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@@ -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.

33
src/core/hle/kernel/thread.cpp
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@@ -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