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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <catch2/catch_test_macros.hpp>
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/memory.h"
TEST_CASE("Memory Basics", "[kernel][memory]") {
auto mem = std::make_shared<BufferMem>(Memory::CITRA_PAGE_SIZE);
MemoryRef block{mem};
Core::Timing timing(1, 100);
Core::System system;
Memory::MemorySystem memory{system};
Kernel::KernelSystem kernel(
memory, timing, [] {}, Kernel::MemoryMode::Prod, 1,
Kernel::New3dsHwCapabilities{false, false, Kernel::New3dsMemoryMode::Legacy});
Kernel::Process process(kernel);
SECTION("mapping memory") {
// Because of the PageTable, Kernel::VMManager is too big to be created on the stack.
auto manager = std::make_unique<Kernel::VMManager>(memory, process);
auto result =
manager->MapBackingMemory(Memory::HEAP_VADDR, block, static_cast<u32>(block.GetSize()),
Kernel::MemoryState::Private);
REQUIRE(result.Code() == ResultSuccess);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.size == static_cast<u32>(block.GetSize()));
CHECK(vma->second.type == Kernel::VMAType::BackingMemory);
CHECK(vma->second.backing_memory.GetPtr() == block.GetPtr());
CHECK(vma->second.meminfo_state == Kernel::MemoryState::Private);
}
SECTION("unmapping memory") {
// Because of the PageTable, Kernel::VMManager is too big to be created on the stack.
auto manager = std::make_unique<Kernel::VMManager>(memory, process);
auto result =
manager->MapBackingMemory(Memory::HEAP_VADDR, block, static_cast<u32>(block.GetSize()),
Kernel::MemoryState::Private);
REQUIRE(result.Code() == ResultSuccess);
Result code = manager->UnmapRange(Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()));
REQUIRE(code == ResultSuccess);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.type == Kernel::VMAType::Free);
CHECK(vma->second.backing_memory.GetPtr() == nullptr);
}
SECTION("changing memory permissions") {
// Because of the PageTable, Kernel::VMManager is too big to be created on the stack.
auto manager = std::make_unique<Kernel::VMManager>(memory, process);
auto result =
manager->MapBackingMemory(Memory::HEAP_VADDR, block, static_cast<u32>(block.GetSize()),
Kernel::MemoryState::Private);
REQUIRE(result.Code() == ResultSuccess);
Result code = manager->ReprotectRange(Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()),
Kernel::VMAPermission::Execute);
CHECK(code == ResultSuccess);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.permissions == Kernel::VMAPermission::Execute);
code = manager->UnmapRange(Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()));
REQUIRE(code == ResultSuccess);
}
SECTION("changing memory state") {
// Because of the PageTable, Kernel::VMManager is too big to be created on the stack.
auto manager = std::make_unique<Kernel::VMManager>(memory, process);
auto result =
manager->MapBackingMemory(Memory::HEAP_VADDR, block, static_cast<u32>(block.GetSize()),
Kernel::MemoryState::Private);
REQUIRE(result.Code() == ResultSuccess);
SECTION("reprotect memory range") {
Result code =
manager->ReprotectRange(Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()),
Kernel::VMAPermission::ReadWrite);
REQUIRE(code == ResultSuccess);
}
SECTION("with invalid address") {
Result code = manager->ChangeMemoryState(
0xFFFFFFFF, static_cast<u32>(block.GetSize()), Kernel::MemoryState::Locked,
Kernel::VMAPermission::ReadWrite, Kernel::MemoryState::Aliased,
Kernel::VMAPermission::Execute);
CHECK(code == Kernel::ResultInvalidAddress);
}
SECTION("ignoring the original permissions") {
Result code = manager->ChangeMemoryState(
Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()), Kernel::MemoryState::Private,
Kernel::VMAPermission::None, Kernel::MemoryState::Locked,
Kernel::VMAPermission::Write);
CHECK(code == ResultSuccess);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.permissions == Kernel::VMAPermission::Write);
CHECK(vma->second.meminfo_state == Kernel::MemoryState::Locked);
}
SECTION("enforcing the original permissions with correct expectations") {
Result code = manager->ChangeMemoryState(
Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()), Kernel::MemoryState::Private,
Kernel::VMAPermission::ReadWrite, Kernel::MemoryState::Aliased,
Kernel::VMAPermission::Execute);
CHECK(code == ResultSuccess);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.permissions == Kernel::VMAPermission::Execute);
CHECK(vma->second.meminfo_state == Kernel::MemoryState::Aliased);
}
SECTION("with incorrect permission expectations") {
Result code = manager->ChangeMemoryState(
Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()), Kernel::MemoryState::Private,
Kernel::VMAPermission::Execute, Kernel::MemoryState::Aliased,
Kernel::VMAPermission::Execute);
CHECK(code == Kernel::ResultInvalidAddressState);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.permissions == Kernel::VMAPermission::ReadWrite);
CHECK(vma->second.meminfo_state == Kernel::MemoryState::Private);
}
SECTION("with incorrect state expectations") {
Result code = manager->ChangeMemoryState(
Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()), Kernel::MemoryState::Locked,
Kernel::VMAPermission::ReadWrite, Kernel::MemoryState::Aliased,
Kernel::VMAPermission::Execute);
CHECK(code == Kernel::ResultInvalidAddressState);
auto vma = manager->FindVMA(Memory::HEAP_VADDR);
CHECK(vma != manager->vma_map.end());
CHECK(vma->second.permissions == Kernel::VMAPermission::ReadWrite);
CHECK(vma->second.meminfo_state == Kernel::MemoryState::Private);
}
Result code = manager->UnmapRange(Memory::HEAP_VADDR, static_cast<u32>(block.GetSize()));
REQUIRE(code == ResultSuccess);
}
}
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