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Merge pull request #5271 from MerryMage/rm-mem-Special 

memory: Remove MemoryHook
This commit is contained in:
LC 2021-01-01 11:02:14 -05:00 committed by GitHub
parent eb318ffffc 6d30745d77
commit 9e109849ff
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9 changed files with 0 additions and 382 deletions
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2
src/common/CMakeLists.txt
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@ -135,8 +135,6 @@ add_library(common STATIC
math_util.h
memory_detect.cpp
memory_detect.h
memory_hook.cpp
memory_hook.h
microprofile.cpp
microprofile.h
microprofileui.h

11
src/common/memory_hook.cpp
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@ -1,11 +0,0 @@
// Copyright 2018 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/memory_hook.h"
namespace Common {
MemoryHook::~MemoryHook() = default;
} // namespace Common

47
src/common/memory_hook.h
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@ -1,47 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <optional>
#include "common/common_types.h"
namespace Common {
/**
* Memory hooks have two purposes:
* 1. To allow reads and writes to a region of memory to be intercepted. This is used to implement
* texture forwarding and memory breakpoints for debugging.
* 2. To allow for the implementation of MMIO devices.
*
* A hook may be mapped to multiple regions of memory.
*
* If a std::nullopt or false is returned from a function, the read/write request is passed through
* to the underlying memory region.
*/
class MemoryHook {
public:
virtual ~MemoryHook();
virtual std::optional<bool> IsValidAddress(VAddr addr) = 0;
virtual std::optional<u8> Read8(VAddr addr) = 0;
virtual std::optional<u16> Read16(VAddr addr) = 0;
virtual std::optional<u32> Read32(VAddr addr) = 0;
virtual std::optional<u64> Read64(VAddr addr) = 0;
virtual bool ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size) = 0;
virtual bool Write8(VAddr addr, u8 data) = 0;
virtual bool Write16(VAddr addr, u16 data) = 0;
virtual bool Write32(VAddr addr, u32 data) = 0;
virtual bool Write64(VAddr addr, u64 data) = 0;
virtual bool WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size) = 0;
};
using MemoryHookPointer = std::shared_ptr<MemoryHook>;
} // namespace Common

18
src/common/page_table.h
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@ -8,7 +8,6 @@
#include <tuple>
#include "common/common_types.h"
#include "common/memory_hook.h"
#include "common/virtual_buffer.h"
namespace Common {
@ -23,23 +22,6 @@ enum class PageType : u8 {
RasterizerCachedMemory,
};
struct SpecialRegion {
enum class Type {
DebugHook,
IODevice,
} type;
MemoryHookPointer handler;
[[nodiscard]] bool operator<(const SpecialRegion& other) const {
return std::tie(type, handler) < std::tie(other.type, other.handler);
}
[[nodiscard]] bool operator==(const SpecialRegion& other) const {
return std::tie(type, handler) == std::tie(other.type, other.handler);
}
};
/**
* A (reasonably) fast way of allowing switchable and remappable process address spaces. It loosely
* mimics the way a real CPU page table works.

30
src/core/memory.cpp
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@ -44,27 +44,12 @@ struct Memory::Impl {
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, target, Common::PageType::Memory);
}
void MapIoRegion(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer mmio_handler) {
UNIMPLEMENTED();
}
void UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, 0, Common::PageType::Unmapped);
}
void AddDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
UNIMPLEMENTED();
}
void RemoveDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
UNIMPLEMENTED();
}
bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) const {
const auto& page_table = process.PageTable().PageTableImpl();
const auto [pointer, type] = page_table.pointers[vaddr >> PAGE_BITS].PointerType();
@ -740,25 +725,10 @@ void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size
impl->MapMemoryRegion(page_table, base, size, target);
}
void Memory::MapIoRegion(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer mmio_handler) {
impl->MapIoRegion(page_table, base, size, std::move(mmio_handler));
}
void Memory::UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size) {
impl->UnmapRegion(page_table, base, size);
}
void Memory::AddDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
impl->AddDebugHook(page_table, base, size, std::move(hook));
}
void Memory::RemoveDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
impl->RemoveDebugHook(page_table, base, size, std::move(hook));
}
bool Memory::IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) const {
return impl->IsValidVirtualAddress(process, vaddr);
}

34
src/core/memory.h
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@ -8,7 +8,6 @@
#include <memory>
#include <string>
#include "common/common_types.h"
#include "common/memory_hook.h"
namespace Common {
struct PageTable;
@ -77,17 +76,6 @@ public:
*/
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target);
/**
* Maps a region of the emulated process address space as a IO region.
*
* @param page_table The page table of the emulated process.
* @param base The address to start mapping at. Must be page-aligned.
* @param size The amount of bytes to map. Must be page-aligned.
* @param mmio_handler The handler that backs the mapping.
*/
void MapIoRegion(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer mmio_handler);
/**
* Unmaps a region of the emulated process address space.
*
@ -97,28 +85,6 @@ public:
*/
void UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size);
/**
* Adds a memory hook to intercept reads and writes to given region of memory.
*
* @param page_table The page table of the emulated process
* @param base The starting address to apply the hook to.
* @param size The size of the memory region to apply the hook to, in bytes.
* @param hook The hook to apply to the region of memory.
*/
void AddDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook);
/**
* Removes a memory hook from a given range of memory.
*
* @param page_table The page table of the emulated process.
* @param base The starting address to remove the hook from.
* @param size The size of the memory region to remove the hook from, in bytes.
* @param hook The hook to remove from the specified region of memory.
*/
void RemoveDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook);
/**
* Checks whether or not the supplied address is a valid virtual
* address for the given process.

2
src/tests/CMakeLists.txt
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@ -4,8 +4,6 @@ add_executable(tests
common/fibers.cpp
common/param_package.cpp
common/ring_buffer.cpp
core/arm/arm_test_common.cpp
core/arm/arm_test_common.h
core/core_timing.cpp
tests.cpp
)

145
src/tests/core/arm/arm_test_common.cpp
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@ -1,145 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/page_table.h"
#include "core/core.h"
#include "core/hle/kernel/memory/page_table.h"
#include "core/hle/kernel/process.h"
#include "core/memory.h"
#include "tests/core/arm/arm_test_common.h"
namespace ArmTests {
TestEnvironment::TestEnvironment(bool mutable_memory_)
: mutable_memory(mutable_memory_),
test_memory(std::make_shared<TestMemory>(this)), kernel{Core::System::GetInstance()} {
auto& system = Core::System::GetInstance();
auto process = Kernel::Process::Create(system, "", Kernel::Process::ProcessType::Userland);
page_table = &process->PageTable().PageTableImpl();
system.Memory().MapIoRegion(*page_table, 0x00000000, 0x80000000, test_memory);
system.Memory().MapIoRegion(*page_table, 0x80000000, 0x80000000, test_memory);
kernel.MakeCurrentProcess(process.get());
}
TestEnvironment::~TestEnvironment() {
auto& system = Core::System::GetInstance();
system.Memory().UnmapRegion(*page_table, 0x80000000, 0x80000000);
system.Memory().UnmapRegion(*page_table, 0x00000000, 0x80000000);
}
void TestEnvironment::SetMemory64(VAddr vaddr, u64 value) {
SetMemory32(vaddr + 0, static_cast<u32>(value));
SetMemory32(vaddr + 4, static_cast<u32>(value >> 32));
}
void TestEnvironment::SetMemory32(VAddr vaddr, u32 value) {
SetMemory16(vaddr + 0, static_cast<u16>(value));
SetMemory16(vaddr + 2, static_cast<u16>(value >> 16));
}
void TestEnvironment::SetMemory16(VAddr vaddr, u16 value) {
SetMemory8(vaddr + 0, static_cast<u8>(value));
SetMemory8(vaddr + 1, static_cast<u8>(value >> 8));
}
void TestEnvironment::SetMemory8(VAddr vaddr, u8 value) {
test_memory->data[vaddr] = value;
}
std::vector<WriteRecord> TestEnvironment::GetWriteRecords() const {
return write_records;
}
void TestEnvironment::ClearWriteRecords() {
write_records.clear();
}
TestEnvironment::TestMemory::~TestMemory() {}
std::optional<bool> TestEnvironment::TestMemory::IsValidAddress(VAddr addr) {
return true;
}
std::optional<u8> TestEnvironment::TestMemory::Read8(VAddr addr) {
const auto iter = data.find(addr);
if (iter == data.end()) {
// Some arbitrary data
return static_cast<u8>(addr);
}
return iter->second;
}
std::optional<u16> TestEnvironment::TestMemory::Read16(VAddr addr) {
return *Read8(addr) | static_cast<u16>(*Read8(addr + 1)) << 8;
}
std::optional<u32> TestEnvironment::TestMemory::Read32(VAddr addr) {
return *Read16(addr) | static_cast<u32>(*Read16(addr + 2)) << 16;
}
std::optional<u64> TestEnvironment::TestMemory::Read64(VAddr addr) {
return *Read32(addr) | static_cast<u64>(*Read32(addr + 4)) << 32;
}
bool TestEnvironment::TestMemory::ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size) {
VAddr addr = src_addr;
u8* data = static_cast<u8*>(dest_buffer);
for (std::size_t i = 0; i < size; i++, addr++, data++) {
*data = *Read8(addr);
}
return true;
}
bool TestEnvironment::TestMemory::Write8(VAddr addr, u8 data) {
env->write_records.emplace_back(8, addr, data);
if (env->mutable_memory)
env->SetMemory8(addr, data);
return true;
}
bool TestEnvironment::TestMemory::Write16(VAddr addr, u16 data) {
env->write_records.emplace_back(16, addr, data);
if (env->mutable_memory)
env->SetMemory16(addr, data);
return true;
}
bool TestEnvironment::TestMemory::Write32(VAddr addr, u32 data) {
env->write_records.emplace_back(32, addr, data);
if (env->mutable_memory)
env->SetMemory32(addr, data);
return true;
}
bool TestEnvironment::TestMemory::Write64(VAddr addr, u64 data) {
env->write_records.emplace_back(64, addr, data);
if (env->mutable_memory)
env->SetMemory64(addr, data);
return true;
}
bool TestEnvironment::TestMemory::WriteBlock(VAddr dest_addr, const void* src_buffer,
std::size_t size) {
VAddr addr = dest_addr;
const u8* data = static_cast<const u8*>(src_buffer);
for (std::size_t i = 0; i < size; i++, addr++, data++) {
env->write_records.emplace_back(8, addr, *data);
if (env->mutable_memory)
env->SetMemory8(addr, *data);
}
return true;
}
} // namespace ArmTests

93
src/tests/core/arm/arm_test_common.h
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@ -1,93 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <tuple>
#include <unordered_map>
#include <vector>
#include "common/common_types.h"
#include "common/memory_hook.h"
#include "core/hle/kernel/kernel.h"
namespace Common {
struct PageTable;
}
namespace ArmTests {
struct WriteRecord {
WriteRecord(std::size_t size, VAddr addr, u64 data) : size(size), addr(addr), data(data) {}
std::size_t size;
VAddr addr;
u64 data;
bool operator==(const WriteRecord& o) const {
return std::tie(size, addr, data) == std::tie(o.size, o.addr, o.data);
}
};
class TestEnvironment final {
public:
/*
* Inititalise test environment
* @param mutable_memory If false, writes to memory can never be read back.
* (Memory is immutable.)
*/
explicit TestEnvironment(bool mutable_memory = false);
/// Shutdown test environment
~TestEnvironment();
/// Sets value at memory location vaddr.
void SetMemory8(VAddr vaddr, u8 value);
void SetMemory16(VAddr vaddr, u16 value);
void SetMemory32(VAddr vaddr, u32 value);
void SetMemory64(VAddr vaddr, u64 value);
/**
* Whenever Memory::Write{8,16,32,64} is called within the test environment,
* a new write-record is made.
* @returns A vector of write records made since they were last cleared.
*/
std::vector<WriteRecord> GetWriteRecords() const;
/// Empties the internal write-record store.
void ClearWriteRecords();
private:
friend struct TestMemory;
struct TestMemory final : Common::MemoryHook {
explicit TestMemory(TestEnvironment* env_) : env(env_) {}
TestEnvironment* env;
~TestMemory() override;
std::optional<bool> IsValidAddress(VAddr addr) override;
std::optional<u8> Read8(VAddr addr) override;
std::optional<u16> Read16(VAddr addr) override;
std::optional<u32> Read32(VAddr addr) override;
std::optional<u64> Read64(VAddr addr) override;
bool ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size) override;
bool Write8(VAddr addr, u8 data) override;
bool Write16(VAddr addr, u16 data) override;
bool Write32(VAddr addr, u32 data) override;
bool Write64(VAddr addr, u64 data) override;
bool WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size) override;
std::unordered_map<VAddr, u8> data;
};
bool mutable_memory;
std::shared_ptr<TestMemory> test_memory;
std::vector<WriteRecord> write_records;
Common::PageTable* page_table = nullptr;
Kernel::KernelCore kernel;
};
} // namespace ArmTests