2020-04-08 23:28:42 +02:00
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// Copyright 2020 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/alignment.h"
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#include "common/assert.h"
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2021-06-23 23:18:27 +02:00
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#include "common/literals.h"
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2020-04-08 23:28:42 +02:00
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#include "common/scope_exit.h"
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#include "core/core.h"
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2021-02-13 00:47:05 +01:00
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#include "core/hle/kernel/k_address_space_info.h"
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2021-02-13 02:02:51 +01:00
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#include "core/hle/kernel/k_memory_block.h"
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#include "core/hle/kernel/k_memory_block_manager.h"
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2021-02-13 02:26:01 +01:00
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#include "core/hle/kernel/k_page_linked_list.h"
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2021-02-13 02:58:31 +01:00
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#include "core/hle/kernel/k_page_table.h"
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2021-04-24 07:04:28 +02:00
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#include "core/hle/kernel/k_process.h"
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2021-02-12 03:55:22 +01:00
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#include "core/hle/kernel/k_resource_limit.h"
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2021-02-05 02:06:54 +01:00
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#include "core/hle/kernel/k_scoped_resource_reservation.h"
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2021-02-12 03:55:22 +01:00
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#include "core/hle/kernel/k_system_control.h"
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2020-04-08 23:28:42 +02:00
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#include "core/hle/kernel/kernel.h"
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2021-02-13 00:43:01 +01:00
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#include "core/hle/kernel/svc_results.h"
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2020-04-08 23:28:42 +02:00
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#include "core/memory.h"
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2021-02-13 02:58:31 +01:00
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namespace Kernel {
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2020-04-08 23:28:42 +02:00
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namespace {
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2021-06-23 23:18:27 +02:00
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using namespace Common::Literals;
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2020-04-08 23:28:42 +02:00
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constexpr std::size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceType as_type) {
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switch (as_type) {
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case FileSys::ProgramAddressSpaceType::Is32Bit:
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case FileSys::ProgramAddressSpaceType::Is32BitNoMap:
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return 32;
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case FileSys::ProgramAddressSpaceType::Is36Bit:
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return 36;
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case FileSys::ProgramAddressSpaceType::Is39Bit:
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return 39;
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default:
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UNREACHABLE();
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return {};
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}
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}
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2021-02-13 02:02:51 +01:00
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constexpr u64 GetAddressInRange(const KMemoryInfo& info, VAddr addr) {
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2020-04-08 23:28:42 +02:00
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if (info.GetAddress() < addr) {
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return addr;
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}
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return info.GetAddress();
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}
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constexpr std::size_t GetSizeInRange(const KMemoryInfo& info, VAddr start, VAddr end) {
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std::size_t size{info.GetSize()};
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if (info.GetAddress() < start) {
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size -= start - info.GetAddress();
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}
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if (info.GetEndAddress() > end) {
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size -= info.GetEndAddress() - end;
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}
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return size;
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}
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} // namespace
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2021-05-16 07:46:30 +02:00
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KPageTable::KPageTable(Core::System& system_) : system{system_} {}
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ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type,
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bool enable_aslr, VAddr code_addr,
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std::size_t code_size, KMemoryManager::Pool pool) {
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const auto GetSpaceStart = [this](KAddressSpaceInfo::Type type) {
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return KAddressSpaceInfo::GetAddressSpaceStart(address_space_width, type);
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};
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const auto GetSpaceSize = [this](KAddressSpaceInfo::Type type) {
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return KAddressSpaceInfo::GetAddressSpaceSize(address_space_width, type);
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};
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// Set our width and heap/alias sizes
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address_space_width = GetAddressSpaceWidthFromType(as_type);
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const VAddr start = 0;
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const VAddr end{1ULL << address_space_width};
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std::size_t alias_region_size{GetSpaceSize(KAddressSpaceInfo::Type::Alias)};
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std::size_t heap_region_size{GetSpaceSize(KAddressSpaceInfo::Type::Heap)};
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2020-04-08 23:28:42 +02:00
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ASSERT(start <= code_addr);
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ASSERT(code_addr < code_addr + code_size);
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ASSERT(code_addr + code_size - 1 <= end - 1);
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// Adjust heap/alias size if we don't have an alias region
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if (as_type == FileSys::ProgramAddressSpaceType::Is32BitNoMap) {
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heap_region_size += alias_region_size;
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alias_region_size = 0;
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}
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// Set code regions and determine remaining
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constexpr std::size_t RegionAlignment{2_MiB};
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VAddr process_code_start{};
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VAddr process_code_end{};
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std::size_t stack_region_size{};
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std::size_t kernel_map_region_size{};
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if (address_space_width == 39) {
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alias_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Alias);
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heap_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Heap);
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stack_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Stack);
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kernel_map_region_size = GetSpaceSize(KAddressSpaceInfo::Type::MapSmall);
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code_region_start = GetSpaceStart(KAddressSpaceInfo::Type::Map39Bit);
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code_region_end = code_region_start + GetSpaceSize(KAddressSpaceInfo::Type::Map39Bit);
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2020-04-08 23:28:42 +02:00
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alias_code_region_start = code_region_start;
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alias_code_region_end = code_region_end;
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process_code_start = Common::AlignDown(code_addr, RegionAlignment);
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process_code_end = Common::AlignUp(code_addr + code_size, RegionAlignment);
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} else {
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stack_region_size = 0;
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kernel_map_region_size = 0;
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code_region_start = GetSpaceStart(KAddressSpaceInfo::Type::MapSmall);
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code_region_end = code_region_start + GetSpaceSize(KAddressSpaceInfo::Type::MapSmall);
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2020-04-08 23:28:42 +02:00
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stack_region_start = code_region_start;
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alias_code_region_start = code_region_start;
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2021-02-13 00:47:05 +01:00
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alias_code_region_end = GetSpaceStart(KAddressSpaceInfo::Type::MapLarge) +
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GetSpaceSize(KAddressSpaceInfo::Type::MapLarge);
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2020-04-08 23:28:42 +02:00
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stack_region_end = code_region_end;
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kernel_map_region_start = code_region_start;
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kernel_map_region_end = code_region_end;
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process_code_start = code_region_start;
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process_code_end = code_region_end;
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}
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// Set other basic fields
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is_aslr_enabled = enable_aslr;
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address_space_start = start;
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address_space_end = end;
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is_kernel = false;
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// Determine the region we can place our undetermineds in
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VAddr alloc_start{};
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std::size_t alloc_size{};
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if ((process_code_start - code_region_start) >= (end - process_code_end)) {
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alloc_start = code_region_start;
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alloc_size = process_code_start - code_region_start;
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} else {
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alloc_start = process_code_end;
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alloc_size = end - process_code_end;
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}
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const std::size_t needed_size{
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(alias_region_size + heap_region_size + stack_region_size + kernel_map_region_size)};
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if (alloc_size < needed_size) {
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UNREACHABLE();
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return ResultOutOfMemory;
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}
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const std::size_t remaining_size{alloc_size - needed_size};
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// Determine random placements for each region
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std::size_t alias_rnd{}, heap_rnd{}, stack_rnd{}, kmap_rnd{};
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if (enable_aslr) {
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alias_rnd = KSystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
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2020-04-08 23:28:42 +02:00
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RegionAlignment;
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heap_rnd = KSystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
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RegionAlignment;
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stack_rnd = KSystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
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RegionAlignment;
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kmap_rnd = KSystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
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RegionAlignment;
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}
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// Setup heap and alias regions
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alias_region_start = alloc_start + alias_rnd;
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alias_region_end = alias_region_start + alias_region_size;
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heap_region_start = alloc_start + heap_rnd;
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heap_region_end = heap_region_start + heap_region_size;
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if (alias_rnd <= heap_rnd) {
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heap_region_start += alias_region_size;
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heap_region_end += alias_region_size;
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} else {
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alias_region_start += heap_region_size;
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alias_region_end += heap_region_size;
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}
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// Setup stack region
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if (stack_region_size) {
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stack_region_start = alloc_start + stack_rnd;
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stack_region_end = stack_region_start + stack_region_size;
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if (alias_rnd < stack_rnd) {
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stack_region_start += alias_region_size;
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stack_region_end += alias_region_size;
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} else {
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alias_region_start += stack_region_size;
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alias_region_end += stack_region_size;
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}
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if (heap_rnd < stack_rnd) {
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stack_region_start += heap_region_size;
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stack_region_end += heap_region_size;
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} else {
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heap_region_start += stack_region_size;
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heap_region_end += stack_region_size;
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}
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}
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// Setup kernel map region
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if (kernel_map_region_size) {
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kernel_map_region_start = alloc_start + kmap_rnd;
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kernel_map_region_end = kernel_map_region_start + kernel_map_region_size;
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if (alias_rnd < kmap_rnd) {
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kernel_map_region_start += alias_region_size;
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kernel_map_region_end += alias_region_size;
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} else {
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alias_region_start += kernel_map_region_size;
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alias_region_end += kernel_map_region_size;
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}
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if (heap_rnd < kmap_rnd) {
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kernel_map_region_start += heap_region_size;
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kernel_map_region_end += heap_region_size;
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} else {
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heap_region_start += kernel_map_region_size;
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heap_region_end += kernel_map_region_size;
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}
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if (stack_region_size) {
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if (stack_rnd < kmap_rnd) {
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kernel_map_region_start += stack_region_size;
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kernel_map_region_end += stack_region_size;
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} else {
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stack_region_start += kernel_map_region_size;
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stack_region_end += kernel_map_region_size;
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}
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}
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}
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// Set heap members
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current_heap_end = heap_region_start;
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max_heap_size = 0;
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max_physical_memory_size = 0;
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// Ensure that we regions inside our address space
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auto IsInAddressSpace = [&](VAddr addr) {
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return address_space_start <= addr && addr <= address_space_end;
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};
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ASSERT(IsInAddressSpace(alias_region_start));
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ASSERT(IsInAddressSpace(alias_region_end));
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ASSERT(IsInAddressSpace(heap_region_start));
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ASSERT(IsInAddressSpace(heap_region_end));
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ASSERT(IsInAddressSpace(stack_region_start));
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ASSERT(IsInAddressSpace(stack_region_end));
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ASSERT(IsInAddressSpace(kernel_map_region_start));
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ASSERT(IsInAddressSpace(kernel_map_region_end));
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// Ensure that we selected regions that don't overlap
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const VAddr alias_start{alias_region_start};
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const VAddr alias_last{alias_region_end - 1};
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const VAddr heap_start{heap_region_start};
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const VAddr heap_last{heap_region_end - 1};
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const VAddr stack_start{stack_region_start};
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const VAddr stack_last{stack_region_end - 1};
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const VAddr kmap_start{kernel_map_region_start};
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const VAddr kmap_last{kernel_map_region_end - 1};
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ASSERT(alias_last < heap_start || heap_last < alias_start);
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ASSERT(alias_last < stack_start || stack_last < alias_start);
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ASSERT(alias_last < kmap_start || kmap_last < alias_start);
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ASSERT(heap_last < stack_start || stack_last < heap_start);
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ASSERT(heap_last < kmap_start || kmap_last < heap_start);
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2021-12-28 09:18:41 +01:00
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current_heap_end = heap_region_start;
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max_heap_size = 0;
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mapped_physical_memory_size = 0;
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2020-04-08 23:28:42 +02:00
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memory_pool = pool;
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core/memory: Read and write page table atomically
Squash attributes into the pointer's integer, making them an uintptr_t
pair containing 2 bits at the bottom and then the pointer. These bits
are currently unused thanks to alignment requirements.
Configure Dynarmic to mask out these bits on pointer reads.
While we are at it, remove some unused attributes carried over from
Citra.
Read/Write and other hot functions use a two step unpacking process that
is less readable to stop MSVC from emitting an extra AND instruction in
the hot path:
mov rdi,rcx
shr rdx,0Ch
mov r8,qword ptr [rax+8]
mov rax,qword ptr [r8+rdx*8]
mov rdx,rax
-and al,3
and rdx,0FFFFFFFFFFFFFFFCh
je Core::Memory::Memory::Impl::Read<unsigned char>
mov rax,qword ptr [vaddr]
movzx eax,byte ptr [rdx+rax]
2020-12-30 01:16:57 +01:00
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page_table_impl.Resize(address_space_width, PageBits);
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2020-04-08 23:28:42 +02:00
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return InitializeMemoryLayout(start, end);
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}
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2021-02-13 02:58:31 +01:00
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ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemoryState state,
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KMemoryPermission perm) {
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2020-04-08 23:28:42 +02:00
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std::lock_guard lock{page_table_lock};
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const u64 size{num_pages * PageSize};
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if (!CanContain(addr, size, state)) {
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2021-02-13 00:43:01 +01:00
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return ResultInvalidCurrentMemory;
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2020-04-08 23:28:42 +02:00
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}
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if (IsRegionMapped(addr, size)) {
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2021-02-13 00:43:01 +01:00
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return ResultInvalidCurrentMemory;
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2020-04-08 23:28:42 +02:00
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}
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2021-02-13 02:26:01 +01:00
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KPageLinkedList page_linked_list;
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2020-04-17 06:59:08 +02:00
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CASCADE_CODE(
|
|
|
|
system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool));
|
|
|
|
CASCADE_CODE(Operate(addr, num_pages, page_linked_list, OperationType::MapGroup));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_manager->Update(addr, num_pages, state, perm);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{};
|
|
|
|
KMemoryPermission perm{};
|
2022-01-08 12:13:17 +01:00
|
|
|
CASCADE_CODE(CheckMemoryState(&state, &perm, nullptr, nullptr, src_addr, size,
|
|
|
|
KMemoryState::All, KMemoryState::Normal, KMemoryPermission::All,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission::ReadAndWrite, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
if (IsRegionMapped(dst_addr, size)) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList page_linked_list;
|
2020-04-08 23:28:42 +02:00
|
|
|
AddRegionToPages(src_addr, num_pages, page_linked_list);
|
|
|
|
|
|
|
|
{
|
|
|
|
auto block_guard = detail::ScopeExit(
|
|
|
|
[&] { Operate(src_addr, num_pages, perm, OperationType::ChangePermissions); });
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(Operate(src_addr, num_pages, KMemoryPermission::None,
|
|
|
|
OperationType::ChangePermissions));
|
|
|
|
CASCADE_CODE(MapPages(dst_addr, page_linked_list, KMemoryPermission::None));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_guard.Cancel();
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(src_addr, num_pages, state, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::Locked);
|
|
|
|
block_manager->Update(dst_addr, num_pages, KMemoryState::AliasCode);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
if (!size) {
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
CASCADE_CODE(CheckMemoryState(nullptr, nullptr, nullptr, nullptr, src_addr, size,
|
|
|
|
KMemoryState::All, KMemoryState::Normal, KMemoryPermission::None,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission::None, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{};
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&state, nullptr, nullptr, nullptr, dst_addr, PageSize, KMemoryState::FlagCanCodeAlias,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanCodeAlias, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::Mask, KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
|
|
|
|
CASCADE_CODE(CheckMemoryState(dst_addr, size, KMemoryState::All, state, KMemoryPermission::None,
|
|
|
|
KMemoryPermission::None, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::None));
|
|
|
|
CASCADE_CODE(Operate(dst_addr, num_pages, KMemoryPermission::None, OperationType::Unmap));
|
|
|
|
|
|
|
|
block_manager->Update(dst_addr, num_pages, KMemoryState::Free);
|
|
|
|
block_manager->Update(src_addr, num_pages, KMemoryState::Normal,
|
|
|
|
KMemoryPermission::ReadAndWrite);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-10-13 20:21:02 +02:00
|
|
|
system.InvalidateCpuInstructionCacheRange(dst_addr, size);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-12-05 21:04:08 +01:00
|
|
|
ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
|
|
|
|
KPageTable& src_page_table, VAddr src_addr) {
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
|
|
|
|
// Check that the memory is mapped in the destination process.
|
|
|
|
size_t num_allocator_blocks;
|
|
|
|
R_TRY(CheckMemoryState(&num_allocator_blocks, dst_addr, size, KMemoryState::All,
|
|
|
|
KMemoryState::SharedCode, KMemoryPermission::UserReadWrite,
|
|
|
|
KMemoryPermission::UserReadWrite, KMemoryAttribute::All,
|
|
|
|
KMemoryAttribute::None));
|
|
|
|
|
|
|
|
// Check that the memory is mapped in the source process.
|
|
|
|
R_TRY(src_page_table.CheckMemoryState(src_addr, size, KMemoryState::FlagCanMapProcess,
|
|
|
|
KMemoryState::FlagCanMapProcess, KMemoryPermission::None,
|
|
|
|
KMemoryPermission::None, KMemoryAttribute::All,
|
|
|
|
KMemoryAttribute::None));
|
|
|
|
|
|
|
|
CASCADE_CODE(Operate(dst_addr, num_pages, KMemoryPermission::None, OperationType::Unmap));
|
|
|
|
|
|
|
|
// Apply the memory block update.
|
|
|
|
block_manager->Update(dst_addr, num_pages, KMemoryState::Free, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::None);
|
|
|
|
|
|
|
|
return ResultSuccess;
|
|
|
|
}
|
2021-02-13 02:58:31 +01:00
|
|
|
void KPageTable::MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end) {
|
2020-04-08 23:28:42 +02:00
|
|
|
auto node{page_linked_list.Nodes().begin()};
|
|
|
|
PAddr map_addr{node->GetAddress()};
|
|
|
|
std::size_t src_num_pages{node->GetNumPages()};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->IterateForRange(start, end, [&](const KMemoryInfo& info) {
|
|
|
|
if (info.state != KMemoryState::Free) {
|
2020-04-08 23:28:42 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
std::size_t dst_num_pages{GetSizeInRange(info, start, end) / PageSize};
|
|
|
|
VAddr dst_addr{GetAddressInRange(info, start)};
|
|
|
|
|
|
|
|
while (dst_num_pages) {
|
|
|
|
if (!src_num_pages) {
|
|
|
|
node = std::next(node);
|
|
|
|
map_addr = node->GetAddress();
|
|
|
|
src_num_pages = node->GetNumPages();
|
|
|
|
}
|
|
|
|
|
|
|
|
const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
|
2021-02-13 02:02:51 +01:00
|
|
|
Operate(dst_addr, num_pages, KMemoryPermission::ReadAndWrite, OperationType::Map,
|
2020-04-08 23:28:42 +02:00
|
|
|
map_addr);
|
|
|
|
|
|
|
|
dst_addr += num_pages * PageSize;
|
|
|
|
map_addr += num_pages * PageSize;
|
|
|
|
src_num_pages -= num_pages;
|
|
|
|
dst_num_pages -= num_pages;
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
std::size_t mapped_size{};
|
|
|
|
const VAddr end_addr{addr + size};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
|
|
|
|
if (info.state != KMemoryState::Free) {
|
2020-04-08 23:28:42 +02:00
|
|
|
mapped_size += GetSizeInRange(info, addr, end_addr);
|
|
|
|
}
|
|
|
|
});
|
|
|
|
|
|
|
|
if (mapped_size == size) {
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
const std::size_t remaining_size{size - mapped_size};
|
|
|
|
const std::size_t remaining_pages{remaining_size / PageSize};
|
|
|
|
|
2021-02-05 02:06:54 +01:00
|
|
|
// Reserve the memory from the process resource limit.
|
|
|
|
KScopedResourceReservation memory_reservation(
|
|
|
|
system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
|
|
|
|
remaining_size);
|
|
|
|
if (!memory_reservation.Succeeded()) {
|
|
|
|
LOG_ERROR(Kernel, "Could not reserve remaining {:X} bytes", remaining_size);
|
2021-04-11 20:41:48 +02:00
|
|
|
return ResultLimitReached;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList page_linked_list;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-05 02:06:54 +01:00
|
|
|
CASCADE_CODE(
|
|
|
|
system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages, memory_pool));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-05 02:06:54 +01:00
|
|
|
// We succeeded, so commit the memory reservation.
|
|
|
|
memory_reservation.Commit();
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
MapPhysicalMemory(page_linked_list, addr, end_addr);
|
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
mapped_physical_memory_size += remaining_size;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
const std::size_t num_pages{size / PageSize};
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(addr, num_pages, KMemoryState::Free, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::None, KMemoryState::Normal,
|
|
|
|
KMemoryPermission::ReadAndWrite, KMemoryAttribute::None);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const VAddr end_addr{addr + size};
|
2021-05-21 07:05:04 +02:00
|
|
|
ResultCode result{ResultSuccess};
|
2020-04-08 23:28:42 +02:00
|
|
|
std::size_t mapped_size{};
|
|
|
|
|
|
|
|
// Verify that the region can be unmapped
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
|
|
|
|
if (info.state == KMemoryState::Normal) {
|
|
|
|
if (info.attribute != KMemoryAttribute::None) {
|
2021-02-13 00:43:01 +01:00
|
|
|
result = ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
mapped_size += GetSizeInRange(info, addr, end_addr);
|
2021-02-13 02:02:51 +01:00
|
|
|
} else if (info.state != KMemoryState::Free) {
|
2021-02-13 00:43:01 +01:00
|
|
|
result = ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
});
|
|
|
|
|
|
|
|
if (result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!mapped_size) {
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(UnmapMemory(addr, size));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
auto process{system.Kernel().CurrentProcess()};
|
2021-02-03 02:55:16 +01:00
|
|
|
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
|
2021-12-28 09:18:41 +01:00
|
|
|
mapped_physical_memory_size -= mapped_size;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const VAddr end_addr{addr + size};
|
2021-05-21 07:05:04 +02:00
|
|
|
ResultCode result{ResultSuccess};
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList page_linked_list;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
// Unmap each region within the range
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
|
|
|
|
if (info.state == KMemoryState::Normal) {
|
2020-04-08 23:28:42 +02:00
|
|
|
const std::size_t block_size{GetSizeInRange(info, addr, end_addr)};
|
|
|
|
const std::size_t block_num_pages{block_size / PageSize};
|
|
|
|
const VAddr block_addr{GetAddressInRange(info, addr)};
|
|
|
|
|
|
|
|
AddRegionToPages(block_addr, block_size / PageSize, page_linked_list);
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
if (result = Operate(block_addr, block_num_pages, KMemoryPermission::None,
|
2020-04-08 23:28:42 +02:00
|
|
|
OperationType::Unmap);
|
|
|
|
result.IsError()) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
});
|
|
|
|
|
|
|
|
if (result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
system.Kernel().MemoryManager().Free(page_linked_list, num_pages, memory_pool);
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(addr, num_pages, KMemoryState::Free);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState src_state{};
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&src_state, nullptr, nullptr, nullptr, src_addr, size, KMemoryState::FlagCanAlias,
|
2021-12-28 09:18:41 +01:00
|
|
|
KMemoryState::FlagCanAlias, KMemoryPermission::All, KMemoryPermission::ReadAndWrite,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryAttribute::Mask, KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
if (IsRegionMapped(dst_addr, size)) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList page_linked_list;
|
2020-04-08 23:28:42 +02:00
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
|
|
|
|
AddRegionToPages(src_addr, num_pages, page_linked_list);
|
|
|
|
|
|
|
|
{
|
|
|
|
auto block_guard = detail::ScopeExit([&] {
|
2021-02-13 02:02:51 +01:00
|
|
|
Operate(src_addr, num_pages, KMemoryPermission::ReadAndWrite,
|
2020-04-08 23:28:42 +02:00
|
|
|
OperationType::ChangePermissions);
|
|
|
|
});
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(Operate(src_addr, num_pages, KMemoryPermission::None,
|
|
|
|
OperationType::ChangePermissions));
|
|
|
|
CASCADE_CODE(MapPages(dst_addr, page_linked_list, KMemoryPermission::ReadAndWrite));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_guard.Cancel();
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(src_addr, num_pages, src_state, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::Locked);
|
|
|
|
block_manager->Update(dst_addr, num_pages, KMemoryState::Stack,
|
|
|
|
KMemoryPermission::ReadAndWrite);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState src_state{};
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&src_state, nullptr, nullptr, nullptr, src_addr, size, KMemoryState::FlagCanAlias,
|
2021-12-28 09:18:41 +01:00
|
|
|
KMemoryState::FlagCanAlias, KMemoryPermission::All, KMemoryPermission::None,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryAttribute::Mask, KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission dst_perm{};
|
2022-01-08 12:13:17 +01:00
|
|
|
CASCADE_CODE(CheckMemoryState(nullptr, &dst_perm, nullptr, nullptr, dst_addr, size,
|
|
|
|
KMemoryState::All, KMemoryState::Stack, KMemoryPermission::None,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission::None, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList src_pages;
|
|
|
|
KPageLinkedList dst_pages;
|
2020-04-08 23:28:42 +02:00
|
|
|
const std::size_t num_pages{size / PageSize};
|
|
|
|
|
|
|
|
AddRegionToPages(src_addr, num_pages, src_pages);
|
|
|
|
AddRegionToPages(dst_addr, num_pages, dst_pages);
|
|
|
|
|
|
|
|
if (!dst_pages.IsEqual(src_pages)) {
|
2021-04-11 20:41:48 +02:00
|
|
|
return ResultInvalidMemoryRegion;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
{
|
|
|
|
auto block_guard = detail::ScopeExit([&] { MapPages(dst_addr, dst_pages, dst_perm); });
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(Operate(dst_addr, num_pages, KMemoryPermission::None, OperationType::Unmap));
|
|
|
|
CASCADE_CODE(Operate(src_addr, num_pages, KMemoryPermission::ReadAndWrite,
|
2020-04-17 06:59:08 +02:00
|
|
|
OperationType::ChangePermissions));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_guard.Cancel();
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(src_addr, num_pages, src_state, KMemoryPermission::ReadAndWrite);
|
|
|
|
block_manager->Update(dst_addr, num_pages, KMemoryState::Free);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
|
|
|
|
KMemoryPermission perm) {
|
2020-04-08 23:28:42 +02:00
|
|
|
VAddr cur_addr{addr};
|
|
|
|
|
|
|
|
for (const auto& node : page_linked_list.Nodes()) {
|
2020-04-17 06:59:08 +02:00
|
|
|
if (const auto result{
|
2020-04-08 23:28:42 +02:00
|
|
|
Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())};
|
|
|
|
result.IsError()) {
|
|
|
|
const std::size_t num_pages{(addr - cur_addr) / PageSize};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
ASSERT(Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)
|
|
|
|
.IsSuccess());
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
cur_addr += node.GetNumPages() * PageSize;
|
|
|
|
}
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
|
|
|
|
KMemoryPermission perm) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const std::size_t num_pages{page_linked_list.GetNumPages()};
|
|
|
|
const std::size_t size{num_pages * PageSize};
|
|
|
|
|
|
|
|
if (!CanContain(addr, size, state)) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (IsRegionMapped(addr, num_pages * PageSize)) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(MapPages(addr, page_linked_list, perm));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_manager->Update(addr, num_pages, state, perm);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2021-04-30 23:53:22 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
ResultCode KPageTable::UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list) {
|
|
|
|
VAddr cur_addr{addr};
|
|
|
|
|
|
|
|
for (const auto& node : page_linked_list.Nodes()) {
|
|
|
|
const std::size_t num_pages{(addr - cur_addr) / PageSize};
|
|
|
|
if (const auto result{
|
|
|
|
Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)};
|
|
|
|
result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
cur_addr += node.GetNumPages() * PageSize;
|
|
|
|
}
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2021-04-30 23:53:22 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
|
|
|
|
KMemoryState state) {
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
const std::size_t num_pages{page_linked_list.GetNumPages()};
|
|
|
|
const std::size_t size{num_pages * PageSize};
|
|
|
|
|
|
|
|
if (!CanContain(addr, size, state)) {
|
|
|
|
return ResultInvalidCurrentMemory;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (IsRegionMapped(addr, num_pages * PageSize)) {
|
|
|
|
return ResultInvalidCurrentMemory;
|
|
|
|
}
|
|
|
|
|
|
|
|
CASCADE_CODE(UnmapPages(addr, page_linked_list));
|
|
|
|
|
|
|
|
block_manager->Update(addr, num_pages, state, KMemoryPermission::None);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-11-21 02:05:02 +01:00
|
|
|
ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
|
|
|
|
KMemoryPermission perm) {
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState prev_state{};
|
|
|
|
KMemoryPermission prev_perm{};
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&prev_state, &prev_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCode,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCode, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::Mask, KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{prev_state};
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
// Ensure state is mutable if permission allows write
|
2021-02-13 02:02:51 +01:00
|
|
|
if ((perm & KMemoryPermission::Write) != KMemoryPermission::None) {
|
|
|
|
if (prev_state == KMemoryState::Code) {
|
|
|
|
state = KMemoryState::CodeData;
|
|
|
|
} else if (prev_state == KMemoryState::AliasCode) {
|
|
|
|
state = KMemoryState::AliasCodeData;
|
2020-04-08 23:28:42 +02:00
|
|
|
} else {
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return early if there is nothing to change
|
|
|
|
if (state == prev_state && perm == prev_perm) {
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
if ((prev_perm & KMemoryPermission::Execute) != (perm & KMemoryPermission::Execute)) {
|
2020-11-14 08:20:32 +01:00
|
|
|
// Memory execution state is changing, invalidate CPU cache range
|
|
|
|
system.InvalidateCpuInstructionCacheRange(addr, size);
|
|
|
|
}
|
|
|
|
|
2020-04-08 23:28:42 +02:00
|
|
|
const std::size_t num_pages{size / PageSize};
|
2021-02-13 02:02:51 +01:00
|
|
|
const OperationType operation{(perm & KMemoryPermission::Execute) != KMemoryPermission::None
|
2020-04-08 23:28:42 +02:00
|
|
|
? OperationType::ChangePermissionsAndRefresh
|
|
|
|
: OperationType::ChangePermissions};
|
|
|
|
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(Operate(addr, num_pages, perm, operation));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
block_manager->Update(addr, num_pages, state, perm);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
KMemoryInfo KPageTable::QueryInfoImpl(VAddr addr) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
return block_manager->FindBlock(addr).GetMemoryInfo();
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
KMemoryInfo KPageTable::QueryInfo(VAddr addr) {
|
2020-04-08 23:28:42 +02:00
|
|
|
if (!Contains(addr, 1)) {
|
2021-02-13 02:02:51 +01:00
|
|
|
return {address_space_end, 0 - address_space_end, KMemoryState::Inaccessible,
|
|
|
|
KMemoryPermission::None, KMemoryAttribute::None, KMemoryPermission::None};
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return QueryInfoImpl(addr);
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{};
|
|
|
|
KMemoryAttribute attribute{};
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&state, nullptr, &attribute, nullptr, addr, size,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted,
|
2021-12-28 09:18:41 +01:00
|
|
|
KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted, KMemoryPermission::All,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission::ReadAndWrite, KMemoryAttribute::Mask, KMemoryAttribute::None,
|
|
|
|
KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(addr, size / PageSize, state, perm, attribute | KMemoryAttribute::Locked);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{};
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(
|
2022-01-08 12:13:17 +01:00
|
|
|
CheckMemoryState(&state, nullptr, nullptr, nullptr, addr, size,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted,
|
|
|
|
KMemoryState::FlagCanTransfer | KMemoryState::FlagReferenceCounted,
|
|
|
|
KMemoryPermission::None, KMemoryPermission::None, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager->Update(addr, size / PageSize, state, KMemoryPermission::ReadAndWrite);
|
2021-12-23 10:10:36 +01:00
|
|
|
return ResultSuccess;
|
|
|
|
}
|
|
|
|
|
|
|
|
ResultCode KPageTable::SetMemoryPermission(VAddr addr, std::size_t size,
|
|
|
|
Svc::MemoryPermission svc_perm) {
|
|
|
|
const size_t num_pages = size / PageSize;
|
|
|
|
|
|
|
|
// Lock the table.
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
// Verify we can change the memory permission.
|
|
|
|
KMemoryState old_state;
|
|
|
|
KMemoryPermission old_perm;
|
|
|
|
R_TRY(this->CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
std::addressof(old_state), std::addressof(old_perm), nullptr, nullptr, addr, size,
|
2021-12-23 10:10:36 +01:00
|
|
|
KMemoryState::FlagCanReprotect, KMemoryState::FlagCanReprotect, KMemoryPermission::None,
|
|
|
|
KMemoryPermission::None, KMemoryAttribute::All, KMemoryAttribute::None));
|
|
|
|
|
|
|
|
// Determine new perm.
|
|
|
|
const KMemoryPermission new_perm = ConvertToKMemoryPermission(svc_perm);
|
|
|
|
R_SUCCEED_IF(old_perm == new_perm);
|
|
|
|
|
|
|
|
// Perform mapping operation.
|
|
|
|
R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
|
|
|
|
|
|
|
|
// Update the blocks.
|
|
|
|
block_manager->Update(addr, num_pages, old_state, new_perm, KMemoryAttribute::None);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryAttribute mask,
|
|
|
|
KMemoryAttribute value) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState state{};
|
|
|
|
KMemoryPermission perm{};
|
|
|
|
KMemoryAttribute attribute{};
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
CASCADE_CODE(CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
&state, &perm, &attribute, nullptr, addr, size, KMemoryState::FlagCanChangeAttribute,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanChangeAttribute, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::LockedAndIpcLocked, KMemoryAttribute::None,
|
|
|
|
KMemoryAttribute::DeviceSharedAndUncached));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
attribute = attribute & ~mask;
|
|
|
|
attribute = attribute | (mask & value);
|
|
|
|
|
|
|
|
block_manager->Update(addr, size / PageSize, state, perm, attribute);
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
ResultCode KPageTable::SetMaxHeapSize(std::size_t size) {
|
|
|
|
// Lock the table.
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Only process page tables are allowed to set heap size.
|
|
|
|
ASSERT(!this->IsKernel());
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
max_heap_size = size;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
return ResultSuccess;
|
|
|
|
}
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
|
|
|
|
// Try to perform a reduction in heap, instead of an extension.
|
|
|
|
VAddr cur_address{};
|
|
|
|
std::size_t allocation_size{};
|
2020-04-08 23:28:42 +02:00
|
|
|
{
|
2021-12-28 09:18:41 +01:00
|
|
|
// Lock the table.
|
|
|
|
std::lock_guard lk(page_table_lock);
|
|
|
|
|
|
|
|
// Validate that setting heap size is possible at all.
|
|
|
|
R_UNLESS(!is_kernel, ResultOutOfMemory);
|
|
|
|
R_UNLESS(size <= static_cast<std::size_t>(heap_region_end - heap_region_start),
|
|
|
|
ResultOutOfMemory);
|
|
|
|
R_UNLESS(size <= max_heap_size, ResultOutOfMemory);
|
|
|
|
|
|
|
|
if (size < GetHeapSize()) {
|
|
|
|
// The size being requested is less than the current size, so we need to free the end of
|
|
|
|
// the heap.
|
|
|
|
|
|
|
|
// Validate memory state.
|
|
|
|
std::size_t num_allocator_blocks;
|
|
|
|
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks),
|
|
|
|
heap_region_start + size, GetHeapSize() - size,
|
|
|
|
KMemoryState::All, KMemoryState::Normal,
|
|
|
|
KMemoryPermission::All, KMemoryPermission::ReadAndWrite,
|
|
|
|
KMemoryAttribute::All, KMemoryAttribute::None));
|
|
|
|
|
|
|
|
// Unmap the end of the heap.
|
|
|
|
const auto num_pages = (GetHeapSize() - size) / PageSize;
|
|
|
|
R_TRY(Operate(heap_region_start + size, num_pages, KMemoryPermission::None,
|
|
|
|
OperationType::Unmap));
|
|
|
|
|
|
|
|
// Release the memory from the resource limit.
|
|
|
|
system.Kernel().CurrentProcess()->GetResourceLimit()->Release(
|
|
|
|
LimitableResource::PhysicalMemory, num_pages * PageSize);
|
|
|
|
|
|
|
|
// Apply the memory block update.
|
|
|
|
block_manager->Update(heap_region_start + size, num_pages, KMemoryState::Free,
|
|
|
|
KMemoryPermission::None, KMemoryAttribute::None);
|
|
|
|
|
|
|
|
// Update the current heap end.
|
|
|
|
current_heap_end = heap_region_start + size;
|
|
|
|
|
|
|
|
// Set the output.
|
|
|
|
*out = heap_region_start;
|
|
|
|
return ResultSuccess;
|
|
|
|
} else if (size == GetHeapSize()) {
|
|
|
|
// The size requested is exactly the current size.
|
|
|
|
*out = heap_region_start;
|
|
|
|
return ResultSuccess;
|
|
|
|
} else {
|
|
|
|
// We have to allocate memory. Determine how much to allocate and where while the table
|
|
|
|
// is locked.
|
|
|
|
cur_address = current_heap_end;
|
|
|
|
allocation_size = size - GetHeapSize();
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
2021-12-28 09:18:41 +01:00
|
|
|
}
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Reserve memory for the heap extension.
|
|
|
|
KScopedResourceReservation memory_reservation(
|
|
|
|
system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
|
|
|
|
allocation_size);
|
|
|
|
R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Allocate pages for the heap extension.
|
|
|
|
KPageLinkedList page_linked_list;
|
|
|
|
R_TRY(system.Kernel().MemoryManager().Allocate(page_linked_list, allocation_size / PageSize,
|
|
|
|
memory_pool));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Map the pages.
|
|
|
|
{
|
|
|
|
// Lock the table.
|
|
|
|
std::lock_guard lk(page_table_lock);
|
|
|
|
|
|
|
|
// Ensure that the heap hasn't changed since we began executing.
|
|
|
|
ASSERT(cur_address == current_heap_end);
|
|
|
|
|
|
|
|
// Check the memory state.
|
|
|
|
std::size_t num_allocator_blocks{};
|
|
|
|
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), current_heap_end,
|
|
|
|
allocation_size, KMemoryState::All, KMemoryState::Free,
|
|
|
|
KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::None, KMemoryAttribute::None));
|
|
|
|
|
|
|
|
// Map the pages.
|
|
|
|
const auto num_pages = allocation_size / PageSize;
|
|
|
|
R_TRY(Operate(current_heap_end, num_pages, page_linked_list, OperationType::MapGroup));
|
|
|
|
|
|
|
|
// Clear all the newly allocated pages.
|
|
|
|
for (std::size_t cur_page = 0; cur_page < num_pages; ++cur_page) {
|
|
|
|
std::memset(system.Memory().GetPointer(current_heap_end + (cur_page * PageSize)), 0,
|
|
|
|
PageSize);
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// We succeeded, so commit our memory reservation.
|
2021-02-05 02:06:54 +01:00
|
|
|
memory_reservation.Commit();
|
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Apply the memory block update.
|
|
|
|
block_manager->Update(current_heap_end, num_pages, KMemoryState::Normal,
|
|
|
|
KMemoryPermission::ReadAndWrite, KMemoryAttribute::None);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Update the current heap end.
|
|
|
|
current_heap_end = heap_region_start + size;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-12-28 09:18:41 +01:00
|
|
|
// Set the output.
|
|
|
|
*out = heap_region_start;
|
|
|
|
return ResultSuccess;
|
|
|
|
}
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
|
|
|
|
bool is_map_only, VAddr region_start,
|
|
|
|
std::size_t region_num_pages, KMemoryState state,
|
|
|
|
KMemoryPermission perm, PAddr map_addr) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
if (!CanContain(region_start, region_num_pages * PageSize, state)) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultInvalidCurrentMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (region_num_pages <= needed_num_pages) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultOutOfMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
const VAddr addr{
|
|
|
|
AllocateVirtualMemory(region_start, region_num_pages, needed_num_pages, align)};
|
|
|
|
if (!addr) {
|
2021-02-13 00:43:01 +01:00
|
|
|
return ResultOutOfMemory;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (is_map_only) {
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr));
|
2020-04-08 23:28:42 +02:00
|
|
|
} else {
|
2021-02-13 02:26:01 +01:00
|
|
|
KPageLinkedList page_group;
|
2020-04-17 06:59:08 +02:00
|
|
|
CASCADE_CODE(
|
|
|
|
system.Kernel().MemoryManager().Allocate(page_group, needed_num_pages, memory_pool));
|
|
|
|
CASCADE_CODE(Operate(addr, needed_num_pages, page_group, OperationType::MapGroup));
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
block_manager->Update(addr, needed_num_pages, state, perm);
|
|
|
|
|
2021-11-02 22:23:19 +01:00
|
|
|
return addr;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
|
2020-04-23 17:37:12 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission perm{};
|
2020-04-23 17:37:12 +02:00
|
|
|
if (const ResultCode result{CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
nullptr, &perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanChangeAttribute,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanChangeAttribute, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::LockedAndIpcLocked, KMemoryAttribute::None,
|
|
|
|
KMemoryAttribute::DeviceSharedAndUncached)};
|
2020-04-23 17:37:12 +02:00
|
|
|
result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2020-08-11 17:08:10 +02:00
|
|
|
block_manager->UpdateLock(
|
|
|
|
addr, size / PageSize,
|
2021-05-16 07:46:30 +02:00
|
|
|
[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
|
|
|
|
block->ShareToDevice(permission);
|
2020-08-11 17:08:10 +02:00
|
|
|
},
|
|
|
|
perm);
|
2020-04-23 17:37:12 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-23 17:37:12 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size) {
|
2020-04-23 17:37:12 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryPermission perm{};
|
2020-04-23 17:37:12 +02:00
|
|
|
if (const ResultCode result{CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
nullptr, &perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanChangeAttribute,
|
2021-02-13 02:02:51 +01:00
|
|
|
KMemoryState::FlagCanChangeAttribute, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::LockedAndIpcLocked, KMemoryAttribute::None,
|
|
|
|
KMemoryAttribute::DeviceSharedAndUncached)};
|
2020-04-23 17:37:12 +02:00
|
|
|
result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2020-08-11 17:08:10 +02:00
|
|
|
block_manager->UpdateLock(
|
|
|
|
addr, size / PageSize,
|
2021-05-16 07:46:30 +02:00
|
|
|
[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
|
|
|
|
block->UnshareToDevice(permission);
|
2020-08-11 17:08:10 +02:00
|
|
|
},
|
|
|
|
perm);
|
2020-04-23 17:37:12 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-23 17:37:12 +02:00
|
|
|
}
|
|
|
|
|
2021-12-05 21:04:08 +01:00
|
|
|
ResultCode KPageTable::LockForCodeMemory(VAddr addr, std::size_t size) {
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
KMemoryPermission new_perm = KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite;
|
|
|
|
|
|
|
|
KMemoryPermission old_perm{};
|
|
|
|
|
|
|
|
if (const ResultCode result{CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
nullptr, &old_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
|
2021-12-28 09:18:41 +01:00
|
|
|
KMemoryState::FlagCanCodeMemory, KMemoryPermission::All,
|
2021-12-05 21:04:08 +01:00
|
|
|
KMemoryPermission::UserReadWrite, KMemoryAttribute::All, KMemoryAttribute::None)};
|
|
|
|
result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
|
|
|
|
|
|
|
|
block_manager->UpdateLock(
|
|
|
|
addr, size / PageSize,
|
|
|
|
[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
|
|
|
|
block->ShareToDevice(permission);
|
|
|
|
},
|
|
|
|
new_perm);
|
|
|
|
|
|
|
|
return ResultSuccess;
|
|
|
|
}
|
|
|
|
|
|
|
|
ResultCode KPageTable::UnlockForCodeMemory(VAddr addr, std::size_t size) {
|
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
KMemoryPermission new_perm = KMemoryPermission::UserReadWrite;
|
|
|
|
|
|
|
|
KMemoryPermission old_perm{};
|
|
|
|
|
|
|
|
if (const ResultCode result{CheckMemoryState(
|
2022-01-08 12:13:17 +01:00
|
|
|
nullptr, &old_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCanCodeMemory,
|
2021-12-05 21:04:08 +01:00
|
|
|
KMemoryState::FlagCanCodeMemory, KMemoryPermission::None, KMemoryPermission::None,
|
|
|
|
KMemoryAttribute::All, KMemoryAttribute::Locked)};
|
|
|
|
result.IsError()) {
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
|
|
|
|
|
|
|
|
block_manager->UpdateLock(
|
|
|
|
addr, size / PageSize,
|
|
|
|
[](KMemoryBlockManager::iterator block, KMemoryPermission permission) {
|
|
|
|
block->UnshareToDevice(permission);
|
|
|
|
},
|
|
|
|
new_perm);
|
|
|
|
|
|
|
|
return ResultSuccess;
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::InitializeMemoryLayout(VAddr start, VAddr end) {
|
2021-02-13 02:02:51 +01:00
|
|
|
block_manager = std::make_unique<KMemoryBlockManager>(start, end);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
bool KPageTable::IsRegionMapped(VAddr address, u64 size) {
|
2021-02-13 02:02:51 +01:00
|
|
|
return CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
|
2021-12-28 09:18:41 +01:00
|
|
|
KMemoryPermission::All, KMemoryPermission::None, KMemoryAttribute::Mask,
|
|
|
|
KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped)
|
2020-04-08 23:28:42 +02:00
|
|
|
.IsError();
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
bool KPageTable::IsRegionContiguous(VAddr addr, u64 size) const {
|
2020-04-08 23:28:42 +02:00
|
|
|
auto start_ptr = system.Memory().GetPointer(addr);
|
|
|
|
for (u64 offset{}; offset < size; offset += PageSize) {
|
|
|
|
if (start_ptr != system.Memory().GetPointer(addr + offset)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
start_ptr += PageSize;
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
void KPageTable::AddRegionToPages(VAddr start, std::size_t num_pages,
|
|
|
|
KPageLinkedList& page_linked_list) {
|
2020-04-08 23:28:42 +02:00
|
|
|
VAddr addr{start};
|
|
|
|
while (addr < start + (num_pages * PageSize)) {
|
|
|
|
const PAddr paddr{GetPhysicalAddr(addr)};
|
|
|
|
if (!paddr) {
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
page_linked_list.AddBlock(paddr, 1);
|
|
|
|
addr += PageSize;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
VAddr KPageTable::AllocateVirtualMemory(VAddr start, std::size_t region_num_pages,
|
|
|
|
u64 needed_num_pages, std::size_t align) {
|
2020-04-08 23:28:42 +02:00
|
|
|
if (is_aslr_enabled) {
|
|
|
|
UNIMPLEMENTED();
|
|
|
|
}
|
|
|
|
return block_manager->FindFreeArea(start, region_num_pages, needed_num_pages, align, 0,
|
|
|
|
IsKernel() ? 1 : 4);
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::Operate(VAddr addr, std::size_t num_pages, const KPageLinkedList& page_group,
|
|
|
|
OperationType operation) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
ASSERT(Common::IsAligned(addr, PageSize));
|
|
|
|
ASSERT(num_pages > 0);
|
|
|
|
ASSERT(num_pages == page_group.GetNumPages());
|
|
|
|
|
|
|
|
for (const auto& node : page_group.Nodes()) {
|
|
|
|
const std::size_t size{node.GetNumPages() * PageSize};
|
|
|
|
|
|
|
|
switch (operation) {
|
|
|
|
case OperationType::MapGroup:
|
|
|
|
system.Memory().MapMemoryRegion(page_table_impl, addr, size, node.GetAddress());
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
|
|
|
|
addr += size;
|
|
|
|
}
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
ResultCode KPageTable::Operate(VAddr addr, std::size_t num_pages, KMemoryPermission perm,
|
|
|
|
OperationType operation, PAddr map_addr) {
|
2020-04-08 23:28:42 +02:00
|
|
|
std::lock_guard lock{page_table_lock};
|
|
|
|
|
|
|
|
ASSERT(num_pages > 0);
|
|
|
|
ASSERT(Common::IsAligned(addr, PageSize));
|
|
|
|
ASSERT(ContainsPages(addr, num_pages));
|
|
|
|
|
|
|
|
switch (operation) {
|
|
|
|
case OperationType::Unmap:
|
|
|
|
system.Memory().UnmapRegion(page_table_impl, addr, num_pages * PageSize);
|
|
|
|
break;
|
|
|
|
case OperationType::Map: {
|
|
|
|
ASSERT(map_addr);
|
|
|
|
ASSERT(Common::IsAligned(map_addr, PageSize));
|
|
|
|
system.Memory().MapMemoryRegion(page_table_impl, addr, num_pages * PageSize, map_addr);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case OperationType::ChangePermissions:
|
|
|
|
case OperationType::ChangePermissionsAndRefresh:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
constexpr VAddr KPageTable::GetRegionAddress(KMemoryState state) const {
|
2020-04-08 23:28:42 +02:00
|
|
|
switch (state) {
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Free:
|
|
|
|
case KMemoryState::Kernel:
|
2020-04-08 23:28:42 +02:00
|
|
|
return address_space_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Normal:
|
2020-04-08 23:28:42 +02:00
|
|
|
return heap_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Ipc:
|
|
|
|
case KMemoryState::NonSecureIpc:
|
|
|
|
case KMemoryState::NonDeviceIpc:
|
2020-04-08 23:28:42 +02:00
|
|
|
return alias_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Stack:
|
2020-04-08 23:28:42 +02:00
|
|
|
return stack_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Static:
|
|
|
|
case KMemoryState::ThreadLocal:
|
2020-04-08 23:28:42 +02:00
|
|
|
return kernel_map_region_start;
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Io:
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Shared:
|
|
|
|
case KMemoryState::AliasCode:
|
|
|
|
case KMemoryState::AliasCodeData:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Transfered:
|
|
|
|
case KMemoryState::SharedTransfered:
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::SharedCode:
|
|
|
|
case KMemoryState::GeneratedCode:
|
|
|
|
case KMemoryState::CodeOut:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Coverage:
|
2020-04-08 23:28:42 +02:00
|
|
|
return alias_code_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Code:
|
|
|
|
case KMemoryState::CodeData:
|
2020-04-08 23:28:42 +02:00
|
|
|
return code_region_start;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
return {};
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-02-13 02:58:31 +01:00
|
|
|
constexpr std::size_t KPageTable::GetRegionSize(KMemoryState state) const {
|
2020-04-08 23:28:42 +02:00
|
|
|
switch (state) {
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Free:
|
|
|
|
case KMemoryState::Kernel:
|
2020-04-08 23:28:42 +02:00
|
|
|
return address_space_end - address_space_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Normal:
|
2020-04-08 23:28:42 +02:00
|
|
|
return heap_region_end - heap_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Ipc:
|
|
|
|
case KMemoryState::NonSecureIpc:
|
|
|
|
case KMemoryState::NonDeviceIpc:
|
2020-04-08 23:28:42 +02:00
|
|
|
return alias_region_end - alias_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Stack:
|
2020-04-08 23:28:42 +02:00
|
|
|
return stack_region_end - stack_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Static:
|
|
|
|
case KMemoryState::ThreadLocal:
|
2020-04-08 23:28:42 +02:00
|
|
|
return kernel_map_region_end - kernel_map_region_start;
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Io:
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Shared:
|
|
|
|
case KMemoryState::AliasCode:
|
|
|
|
case KMemoryState::AliasCodeData:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Transfered:
|
|
|
|
case KMemoryState::SharedTransfered:
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::SharedCode:
|
|
|
|
case KMemoryState::GeneratedCode:
|
|
|
|
case KMemoryState::CodeOut:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Coverage:
|
2020-04-08 23:28:42 +02:00
|
|
|
return alias_code_region_end - alias_code_region_start;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Code:
|
|
|
|
case KMemoryState::CodeData:
|
2020-04-08 23:28:42 +02:00
|
|
|
return code_region_end - code_region_start;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
return {};
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-05-05 07:14:06 +02:00
|
|
|
bool KPageTable::CanContain(VAddr addr, std::size_t size, KMemoryState state) const {
|
2022-01-08 12:13:17 +01:00
|
|
|
const VAddr end = addr + size;
|
|
|
|
const VAddr last = end - 1;
|
|
|
|
|
|
|
|
const VAddr region_start = this->GetRegionAddress(state);
|
|
|
|
const size_t region_size = this->GetRegionSize(state);
|
|
|
|
|
|
|
|
const bool is_in_region =
|
|
|
|
region_start <= addr && addr < end && last <= region_start + region_size - 1;
|
|
|
|
const bool is_in_heap = !(end <= heap_region_start || heap_region_end <= addr ||
|
|
|
|
heap_region_start == heap_region_end);
|
|
|
|
const bool is_in_alias = !(end <= alias_region_start || alias_region_end <= addr ||
|
|
|
|
alias_region_start == alias_region_end);
|
2020-04-08 23:28:42 +02:00
|
|
|
switch (state) {
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Free:
|
|
|
|
case KMemoryState::Kernel:
|
2020-04-08 23:28:42 +02:00
|
|
|
return is_in_region;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Io:
|
|
|
|
case KMemoryState::Static:
|
|
|
|
case KMemoryState::Code:
|
|
|
|
case KMemoryState::CodeData:
|
|
|
|
case KMemoryState::Shared:
|
|
|
|
case KMemoryState::AliasCode:
|
|
|
|
case KMemoryState::AliasCodeData:
|
|
|
|
case KMemoryState::Stack:
|
|
|
|
case KMemoryState::ThreadLocal:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Transfered:
|
|
|
|
case KMemoryState::SharedTransfered:
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::SharedCode:
|
|
|
|
case KMemoryState::GeneratedCode:
|
|
|
|
case KMemoryState::CodeOut:
|
2022-01-08 12:13:17 +01:00
|
|
|
case KMemoryState::Coverage:
|
2020-04-08 23:28:42 +02:00
|
|
|
return is_in_region && !is_in_heap && !is_in_alias;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Normal:
|
2020-04-08 23:28:42 +02:00
|
|
|
ASSERT(is_in_heap);
|
|
|
|
return is_in_region && !is_in_alias;
|
2021-02-13 02:02:51 +01:00
|
|
|
case KMemoryState::Ipc:
|
|
|
|
case KMemoryState::NonSecureIpc:
|
|
|
|
case KMemoryState::NonDeviceIpc:
|
2020-04-08 23:28:42 +02:00
|
|
|
ASSERT(is_in_alias);
|
|
|
|
return is_in_region && !is_in_heap;
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
ResultCode KPageTable::CheckMemoryState(const KMemoryInfo& info, KMemoryState state_mask,
|
|
|
|
KMemoryState state, KMemoryPermission perm_mask,
|
|
|
|
KMemoryPermission perm, KMemoryAttribute attr_mask,
|
|
|
|
KMemoryAttribute attr) const {
|
|
|
|
// Validate the states match expectation.
|
|
|
|
R_UNLESS((info.state & state_mask) == state, ResultInvalidCurrentMemory);
|
|
|
|
R_UNLESS((info.perm & perm_mask) == perm, ResultInvalidCurrentMemory);
|
|
|
|
R_UNLESS((info.attribute & attr_mask) == attr, ResultInvalidCurrentMemory);
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
ResultCode KPageTable::CheckMemoryStateContiguous(std::size_t* out_blocks_needed, VAddr addr,
|
|
|
|
std::size_t size, KMemoryState state_mask,
|
|
|
|
KMemoryState state, KMemoryPermission perm_mask,
|
|
|
|
KMemoryPermission perm,
|
|
|
|
KMemoryAttribute attr_mask,
|
|
|
|
KMemoryAttribute attr) const {
|
|
|
|
ASSERT(this->IsLockedByCurrentThread());
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// Get information about the first block.
|
|
|
|
const VAddr last_addr = addr + size - 1;
|
|
|
|
KMemoryBlockManager::const_iterator it = block_manager->FindIterator(addr);
|
|
|
|
KMemoryInfo info = it->GetMemoryInfo();
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// If the start address isn't aligned, we need a block.
|
|
|
|
const size_t blocks_for_start_align =
|
|
|
|
(Common::AlignDown(addr, PageSize) != info.GetAddress()) ? 1 : 0;
|
2020-04-08 23:28:42 +02:00
|
|
|
|
|
|
|
while (true) {
|
2022-01-08 12:13:17 +01:00
|
|
|
// Validate against the provided masks.
|
|
|
|
R_TRY(this->CheckMemoryState(info, state_mask, state, perm_mask, perm, attr_mask, attr));
|
2020-04-08 23:28:42 +02:00
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// Break once we're done.
|
2020-04-08 23:28:42 +02:00
|
|
|
if (last_addr <= info.GetLastAddress()) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// Advance our iterator.
|
2020-04-08 23:28:42 +02:00
|
|
|
it++;
|
|
|
|
ASSERT(it != block_manager->cend());
|
|
|
|
info = it->GetMemoryInfo();
|
|
|
|
}
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// If the end address isn't aligned, we need a block.
|
|
|
|
const size_t blocks_for_end_align =
|
|
|
|
(Common::AlignUp(addr + size, PageSize) != info.GetEndAddress()) ? 1 : 0;
|
|
|
|
|
|
|
|
if (out_blocks_needed != nullptr) {
|
|
|
|
*out_blocks_needed = blocks_for_start_align + blocks_for_end_align;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2021-05-21 07:05:04 +02:00
|
|
|
return ResultSuccess;
|
2020-04-08 23:28:42 +02:00
|
|
|
}
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
ResultCode KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermission* out_perm,
|
|
|
|
KMemoryAttribute* out_attr, std::size_t* out_blocks_needed,
|
|
|
|
VAddr addr, std::size_t size, KMemoryState state_mask,
|
|
|
|
KMemoryState state, KMemoryPermission perm_mask,
|
|
|
|
KMemoryPermission perm, KMemoryAttribute attr_mask,
|
|
|
|
KMemoryAttribute attr, KMemoryAttribute ignore_attr) const {
|
|
|
|
ASSERT(this->IsLockedByCurrentThread());
|
|
|
|
|
2021-12-05 21:04:08 +01:00
|
|
|
// Get information about the first block.
|
|
|
|
const VAddr last_addr = addr + size - 1;
|
2022-01-08 12:13:17 +01:00
|
|
|
KMemoryBlockManager::const_iterator it = block_manager->FindIterator(addr);
|
2021-12-05 21:04:08 +01:00
|
|
|
KMemoryInfo info = it->GetMemoryInfo();
|
|
|
|
|
|
|
|
// If the start address isn't aligned, we need a block.
|
|
|
|
const size_t blocks_for_start_align =
|
|
|
|
(Common::AlignDown(addr, PageSize) != info.GetAddress()) ? 1 : 0;
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// Validate all blocks in the range have correct state.
|
|
|
|
const KMemoryState first_state = info.state;
|
|
|
|
const KMemoryPermission first_perm = info.perm;
|
|
|
|
const KMemoryAttribute first_attr = info.attribute;
|
2021-12-05 21:04:08 +01:00
|
|
|
while (true) {
|
2022-01-08 12:13:17 +01:00
|
|
|
// Validate the current block.
|
|
|
|
R_UNLESS(info.state == first_state, ResultInvalidCurrentMemory);
|
|
|
|
R_UNLESS(info.perm == first_perm, ResultInvalidCurrentMemory);
|
|
|
|
R_UNLESS((info.attribute | ignore_attr) == (first_attr | ignore_attr),
|
|
|
|
ResultInvalidCurrentMemory);
|
|
|
|
|
2021-12-05 21:04:08 +01:00
|
|
|
// Validate against the provided masks.
|
2022-01-08 12:13:17 +01:00
|
|
|
R_TRY(this->CheckMemoryState(info, state_mask, state, perm_mask, perm, attr_mask, attr));
|
2021-12-05 21:04:08 +01:00
|
|
|
|
|
|
|
// Break once we're done.
|
|
|
|
if (last_addr <= info.GetLastAddress()) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Advance our iterator.
|
|
|
|
it++;
|
2022-01-08 12:13:17 +01:00
|
|
|
ASSERT(it != block_manager->cend());
|
2021-12-05 21:04:08 +01:00
|
|
|
info = it->GetMemoryInfo();
|
|
|
|
}
|
|
|
|
|
|
|
|
// If the end address isn't aligned, we need a block.
|
|
|
|
const size_t blocks_for_end_align =
|
|
|
|
(Common::AlignUp(addr + size, PageSize) != info.GetEndAddress()) ? 1 : 0;
|
|
|
|
|
2022-01-08 12:13:17 +01:00
|
|
|
// Write output state.
|
|
|
|
if (out_state != nullptr) {
|
|
|
|
*out_state = first_state;
|
|
|
|
}
|
|
|
|
if (out_perm != nullptr) {
|
|
|
|
*out_perm = first_perm;
|
|
|
|
}
|
|
|
|
if (out_attr != nullptr) {
|
|
|
|
*out_attr = static_cast<KMemoryAttribute>(first_attr & ~ignore_attr);
|
|
|
|
}
|
2021-12-05 21:04:08 +01:00
|
|
|
if (out_blocks_needed != nullptr) {
|
|
|
|
*out_blocks_needed = blocks_for_start_align + blocks_for_end_align;
|
|
|
|
}
|
|
|
|
return ResultSuccess;
|
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}
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2021-12-06 16:37:09 +01:00
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} // namespace Kernel
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