703 lines
25 KiB
C++
703 lines
25 KiB
C++
// SPDX-FileCopyrightText: 2014 Citra Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#include <cstddef>
|
|
#include <memory>
|
|
#include <optional>
|
|
#include <span>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "common/scratch_buffer.h"
|
|
#include "common/typed_address.h"
|
|
#include "core/hle/result.h"
|
|
|
|
namespace Common {
|
|
enum class MemoryPermission : u32;
|
|
struct PageTable;
|
|
} // namespace Common
|
|
|
|
namespace Core {
|
|
class System;
|
|
class GPUDirtyMemoryManager;
|
|
} // namespace Core
|
|
|
|
namespace Kernel {
|
|
class KProcess;
|
|
} // namespace Kernel
|
|
|
|
namespace Tegra {
|
|
class MemoryManager;
|
|
}
|
|
|
|
namespace Core::Memory {
|
|
|
|
/**
|
|
* Page size used by the ARM architecture. This is the smallest granularity with which memory can
|
|
* be mapped.
|
|
*/
|
|
constexpr std::size_t YUZU_PAGEBITS = 12;
|
|
constexpr u64 YUZU_PAGESIZE = 1ULL << YUZU_PAGEBITS;
|
|
constexpr u64 YUZU_PAGEMASK = YUZU_PAGESIZE - 1;
|
|
|
|
/// Virtual user-space memory regions
|
|
enum : u64 {
|
|
/// TLS (Thread-Local Storage) related.
|
|
TLS_ENTRY_SIZE = 0x200,
|
|
|
|
/// Application stack
|
|
DEFAULT_STACK_SIZE = 0x100000,
|
|
};
|
|
|
|
/// Central class that handles all memory operations and state.
|
|
class Memory {
|
|
public:
|
|
explicit Memory(Core::System& system);
|
|
~Memory();
|
|
|
|
Memory(const Memory&) = delete;
|
|
Memory& operator=(const Memory&) = delete;
|
|
|
|
Memory(Memory&&) = default;
|
|
Memory& operator=(Memory&&) = delete;
|
|
|
|
/**
|
|
* Resets the state of the Memory system.
|
|
*/
|
|
void Reset();
|
|
|
|
/**
|
|
* Changes the currently active page table to that of the given process instance.
|
|
*
|
|
* @param process The process to use the page table of.
|
|
*/
|
|
void SetCurrentPageTable(Kernel::KProcess& process);
|
|
|
|
/**
|
|
* Maps an allocated buffer onto a region of the emulated process address space.
|
|
*
|
|
* @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 target Buffer with the memory backing the mapping. Must be of length at least
|
|
* `size`.
|
|
* @param perms The permissions to map the memory with.
|
|
*/
|
|
void MapMemoryRegion(Common::PageTable& page_table, Common::ProcessAddress base, u64 size,
|
|
Common::PhysicalAddress target, Common::MemoryPermission perms);
|
|
|
|
/**
|
|
* Unmaps a region of the emulated process address space.
|
|
*
|
|
* @param page_table The page table of the emulated process.
|
|
* @param base The address to begin unmapping at.
|
|
* @param size The amount of bytes to unmap.
|
|
*/
|
|
void UnmapRegion(Common::PageTable& page_table, Common::ProcessAddress base, u64 size);
|
|
|
|
/**
|
|
* Protects a region of the emulated process address space with the new permissions.
|
|
*
|
|
* @param page_table The page table of the emulated process.
|
|
* @param base The start address to re-protect. Must be page-aligned.
|
|
* @param size The amount of bytes to protect. Must be page-aligned.
|
|
* @param perms The permissions the address range is mapped.
|
|
*/
|
|
void ProtectRegion(Common::PageTable& page_table, Common::ProcessAddress base, u64 size,
|
|
Common::MemoryPermission perms);
|
|
|
|
/**
|
|
* Checks whether or not the supplied address is a valid virtual
|
|
* address for the current process.
|
|
*
|
|
* @param vaddr The virtual address to check the validity of.
|
|
*
|
|
* @returns True if the given virtual address is valid, false otherwise.
|
|
*/
|
|
[[nodiscard]] bool IsValidVirtualAddress(Common::ProcessAddress vaddr) const;
|
|
|
|
/**
|
|
* Checks whether or not the supplied range of addresses are all valid
|
|
* virtual addresses for the current process.
|
|
*
|
|
* @param base The address to begin checking.
|
|
* @param size The amount of bytes to check.
|
|
*
|
|
* @returns True if all bytes in the given range are valid, false otherwise.
|
|
*/
|
|
[[nodiscard]] bool IsValidVirtualAddressRange(Common::ProcessAddress base, u64 size) const;
|
|
|
|
/**
|
|
* Gets a pointer to the given address.
|
|
*
|
|
* @param vaddr Virtual address to retrieve a pointer to.
|
|
*
|
|
* @returns The pointer to the given address, if the address is valid.
|
|
* If the address is not valid, nullptr will be returned.
|
|
*/
|
|
u8* GetPointer(Common::ProcessAddress vaddr);
|
|
u8* GetPointerSilent(Common::ProcessAddress vaddr);
|
|
|
|
template <typename T>
|
|
T* GetPointer(Common::ProcessAddress vaddr) {
|
|
return reinterpret_cast<T*>(GetPointer(vaddr));
|
|
}
|
|
|
|
/**
|
|
* Gets a pointer to the given address.
|
|
*
|
|
* @param vaddr Virtual address to retrieve a pointer to.
|
|
*
|
|
* @returns The pointer to the given address, if the address is valid.
|
|
* If the address is not valid, nullptr will be returned.
|
|
*/
|
|
[[nodiscard]] const u8* GetPointer(Common::ProcessAddress vaddr) const;
|
|
|
|
template <typename T>
|
|
const T* GetPointer(Common::ProcessAddress vaddr) const {
|
|
return reinterpret_cast<T*>(GetPointer(vaddr));
|
|
}
|
|
|
|
/**
|
|
* Reads an 8-bit unsigned value from the current process' address space
|
|
* at the given virtual address.
|
|
*
|
|
* @param addr The virtual address to read the 8-bit value from.
|
|
*
|
|
* @returns the read 8-bit unsigned value.
|
|
*/
|
|
u8 Read8(Common::ProcessAddress addr);
|
|
|
|
/**
|
|
* Reads a 16-bit unsigned value from the current process' address space
|
|
* at the given virtual address.
|
|
*
|
|
* @param addr The virtual address to read the 16-bit value from.
|
|
*
|
|
* @returns the read 16-bit unsigned value.
|
|
*/
|
|
u16 Read16(Common::ProcessAddress addr);
|
|
|
|
/**
|
|
* Reads a 32-bit unsigned value from the current process' address space
|
|
* at the given virtual address.
|
|
*
|
|
* @param addr The virtual address to read the 32-bit value from.
|
|
*
|
|
* @returns the read 32-bit unsigned value.
|
|
*/
|
|
u32 Read32(Common::ProcessAddress addr);
|
|
|
|
/**
|
|
* Reads a 64-bit unsigned value from the current process' address space
|
|
* at the given virtual address.
|
|
*
|
|
* @param addr The virtual address to read the 64-bit value from.
|
|
*
|
|
* @returns the read 64-bit value.
|
|
*/
|
|
u64 Read64(Common::ProcessAddress addr);
|
|
|
|
/**
|
|
* Writes an 8-bit unsigned integer to the given virtual address in
|
|
* the current process' address space.
|
|
*
|
|
* @param addr The virtual address to write the 8-bit unsigned integer to.
|
|
* @param data The 8-bit unsigned integer to write to the given virtual address.
|
|
*
|
|
* @post The memory at the given virtual address contains the specified data value.
|
|
*/
|
|
void Write8(Common::ProcessAddress addr, u8 data);
|
|
|
|
/**
|
|
* Writes a 16-bit unsigned integer to the given virtual address in
|
|
* the current process' address space.
|
|
*
|
|
* @param addr The virtual address to write the 16-bit unsigned integer to.
|
|
* @param data The 16-bit unsigned integer to write to the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
void Write16(Common::ProcessAddress addr, u16 data);
|
|
|
|
/**
|
|
* Writes a 32-bit unsigned integer to the given virtual address in
|
|
* the current process' address space.
|
|
*
|
|
* @param addr The virtual address to write the 32-bit unsigned integer to.
|
|
* @param data The 32-bit unsigned integer to write to the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
void Write32(Common::ProcessAddress addr, u32 data);
|
|
|
|
/**
|
|
* Writes a 64-bit unsigned integer to the given virtual address in
|
|
* the current process' address space.
|
|
*
|
|
* @param addr The virtual address to write the 64-bit unsigned integer to.
|
|
* @param data The 64-bit unsigned integer to write to the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
void Write64(Common::ProcessAddress addr, u64 data);
|
|
|
|
/**
|
|
* Writes a 8-bit unsigned integer to the given virtual address in
|
|
* the current process' address space if and only if the address contains
|
|
* the expected value. This operation is atomic.
|
|
*
|
|
* @param addr The virtual address to write the 8-bit unsigned integer to.
|
|
* @param data The 8-bit unsigned integer to write to the given virtual address.
|
|
* @param expected The 8-bit unsigned integer to check against the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
bool WriteExclusive8(Common::ProcessAddress addr, u8 data, u8 expected);
|
|
|
|
/**
|
|
* Writes a 16-bit unsigned integer to the given virtual address in
|
|
* the current process' address space if and only if the address contains
|
|
* the expected value. This operation is atomic.
|
|
*
|
|
* @param addr The virtual address to write the 16-bit unsigned integer to.
|
|
* @param data The 16-bit unsigned integer to write to the given virtual address.
|
|
* @param expected The 16-bit unsigned integer to check against the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
bool WriteExclusive16(Common::ProcessAddress addr, u16 data, u16 expected);
|
|
|
|
/**
|
|
* Writes a 32-bit unsigned integer to the given virtual address in
|
|
* the current process' address space if and only if the address contains
|
|
* the expected value. This operation is atomic.
|
|
*
|
|
* @param addr The virtual address to write the 32-bit unsigned integer to.
|
|
* @param data The 32-bit unsigned integer to write to the given virtual address.
|
|
* @param expected The 32-bit unsigned integer to check against the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
bool WriteExclusive32(Common::ProcessAddress addr, u32 data, u32 expected);
|
|
|
|
/**
|
|
* Writes a 64-bit unsigned integer to the given virtual address in
|
|
* the current process' address space if and only if the address contains
|
|
* the expected value. This operation is atomic.
|
|
*
|
|
* @param addr The virtual address to write the 64-bit unsigned integer to.
|
|
* @param data The 64-bit unsigned integer to write to the given virtual address.
|
|
* @param expected The 64-bit unsigned integer to check against the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
bool WriteExclusive64(Common::ProcessAddress addr, u64 data, u64 expected);
|
|
|
|
/**
|
|
* Writes a 128-bit unsigned integer to the given virtual address in
|
|
* the current process' address space if and only if the address contains
|
|
* the expected value. This operation is atomic.
|
|
*
|
|
* @param addr The virtual address to write the 128-bit unsigned integer to.
|
|
* @param data The 128-bit unsigned integer to write to the given virtual address.
|
|
* @param expected The 128-bit unsigned integer to check against the given virtual address.
|
|
*
|
|
* @post The memory range [addr, sizeof(data)) contains the given data value.
|
|
*/
|
|
bool WriteExclusive128(Common::ProcessAddress addr, u128 data, u128 expected);
|
|
|
|
/**
|
|
* Reads a null-terminated string from the given virtual address.
|
|
* This function will continually read characters until either:
|
|
*
|
|
* - A null character ('\0') is reached.
|
|
* - max_length characters have been read.
|
|
*
|
|
* @note The final null-terminating character (if found) is not included
|
|
* in the returned string.
|
|
*
|
|
* @param vaddr The address to begin reading the string from.
|
|
* @param max_length The maximum length of the string to read in characters.
|
|
*
|
|
* @returns The read string.
|
|
*/
|
|
std::string ReadCString(Common::ProcessAddress vaddr, std::size_t max_length);
|
|
|
|
/**
|
|
* Reads a contiguous block of bytes from the current process' address space.
|
|
*
|
|
* @param src_addr The virtual address to begin reading from.
|
|
* @param dest_buffer The buffer to place the read bytes into.
|
|
* @param size The amount of data to read, in bytes.
|
|
*
|
|
* @note If a size of 0 is specified, then this function reads nothing and
|
|
* no attempts to access memory are made at all.
|
|
*
|
|
* @pre dest_buffer must be at least size bytes in length, otherwise a
|
|
* buffer overrun will occur.
|
|
*
|
|
* @post The range [dest_buffer, size) contains the read bytes from the
|
|
* current process' address space.
|
|
*/
|
|
bool ReadBlock(Common::ProcessAddress src_addr, void* dest_buffer, std::size_t size);
|
|
|
|
/**
|
|
* Reads a contiguous block of bytes from the current process' address space.
|
|
* This unsafe version does not trigger GPU flushing.
|
|
*
|
|
* @param src_addr The virtual address to begin reading from.
|
|
* @param dest_buffer The buffer to place the read bytes into.
|
|
* @param size The amount of data to read, in bytes.
|
|
*
|
|
* @note If a size of 0 is specified, then this function reads nothing and
|
|
* no attempts to access memory are made at all.
|
|
*
|
|
* @pre dest_buffer must be at least size bytes in length, otherwise a
|
|
* buffer overrun will occur.
|
|
*
|
|
* @post The range [dest_buffer, size) contains the read bytes from the
|
|
* current process' address space.
|
|
*/
|
|
bool ReadBlockUnsafe(Common::ProcessAddress src_addr, void* dest_buffer, std::size_t size);
|
|
|
|
const u8* GetSpan(const VAddr src_addr, const std::size_t size) const;
|
|
u8* GetSpan(const VAddr src_addr, const std::size_t size);
|
|
|
|
/**
|
|
* Writes a range of bytes into the current process' address space at the specified
|
|
* virtual address.
|
|
*
|
|
* @param dest_addr The destination virtual address to begin writing the data at.
|
|
* @param src_buffer The data to write into the current process' address space.
|
|
* @param size The size of the data to write, in bytes.
|
|
*
|
|
* @post The address range [dest_addr, size) in the current process' address space
|
|
* contains the data that was within src_buffer.
|
|
*
|
|
* @post If an attempt is made to write into an unmapped region of memory, the writes
|
|
* will be ignored and an error will be logged.
|
|
*
|
|
* @post If a write is performed into a region of memory that is considered cached
|
|
* rasterizer memory, will cause the currently active rasterizer to be notified
|
|
* and will mark that region as invalidated to caches that the active
|
|
* graphics backend may be maintaining over the course of execution.
|
|
*/
|
|
bool WriteBlock(Common::ProcessAddress dest_addr, const void* src_buffer, std::size_t size);
|
|
|
|
/**
|
|
* Writes a range of bytes into the current process' address space at the specified
|
|
* virtual address.
|
|
* This unsafe version does not invalidate GPU Memory.
|
|
*
|
|
* @param dest_addr The destination virtual address to begin writing the data at.
|
|
* @param src_buffer The data to write into the current process' address space.
|
|
* @param size The size of the data to write, in bytes.
|
|
*
|
|
* @post The address range [dest_addr, size) in the current process' address space
|
|
* contains the data that was within src_buffer.
|
|
*
|
|
* @post If an attempt is made to write into an unmapped region of memory, the writes
|
|
* will be ignored and an error will be logged.
|
|
*
|
|
*/
|
|
bool WriteBlockUnsafe(Common::ProcessAddress dest_addr, const void* src_buffer,
|
|
std::size_t size);
|
|
|
|
/**
|
|
* Copies data within a process' address space to another location within the
|
|
* same address space.
|
|
*
|
|
* @param dest_addr The destination virtual address to begin copying the data into.
|
|
* @param src_addr The source virtual address to begin copying the data from.
|
|
* @param size The size of the data to copy, in bytes.
|
|
*
|
|
* @post The range [dest_addr, size) within the process' address space contains the
|
|
* same data within the range [src_addr, size).
|
|
*/
|
|
bool CopyBlock(Common::ProcessAddress dest_addr, Common::ProcessAddress src_addr,
|
|
std::size_t size);
|
|
|
|
/**
|
|
* Zeros a range of bytes within the current process' address space at the specified
|
|
* virtual address.
|
|
*
|
|
* @param dest_addr The destination virtual address to zero the data from.
|
|
* @param size The size of the range to zero out, in bytes.
|
|
*
|
|
* @post The range [dest_addr, size) within the process' address space contains the
|
|
* value 0.
|
|
*/
|
|
bool ZeroBlock(Common::ProcessAddress dest_addr, std::size_t size);
|
|
|
|
/**
|
|
* Invalidates a range of bytes within the current process' address space at the specified
|
|
* virtual address.
|
|
*
|
|
* @param dest_addr The destination virtual address to invalidate the data from.
|
|
* @param size The size of the range to invalidate, in bytes.
|
|
*
|
|
*/
|
|
Result InvalidateDataCache(Common::ProcessAddress dest_addr, std::size_t size);
|
|
|
|
/**
|
|
* Stores a range of bytes within the current process' address space at the specified
|
|
* virtual address.
|
|
*
|
|
* @param dest_addr The destination virtual address to store the data from.
|
|
* @param size The size of the range to store, in bytes.
|
|
*
|
|
*/
|
|
Result StoreDataCache(Common::ProcessAddress dest_addr, std::size_t size);
|
|
|
|
/**
|
|
* Flushes a range of bytes within the current process' address space at the specified
|
|
* virtual address.
|
|
*
|
|
* @param dest_addr The destination virtual address to flush the data from.
|
|
* @param size The size of the range to flush, in bytes.
|
|
*
|
|
*/
|
|
Result FlushDataCache(Common::ProcessAddress dest_addr, std::size_t size);
|
|
|
|
/**
|
|
* Marks each page within the specified address range as cached or uncached.
|
|
*
|
|
* @param vaddr The virtual address indicating the start of the address range.
|
|
* @param size The size of the address range in bytes.
|
|
* @param cached Whether or not any pages within the address range should be
|
|
* marked as cached or uncached.
|
|
*/
|
|
void RasterizerMarkRegionCached(Common::ProcessAddress vaddr, u64 size, bool cached);
|
|
|
|
/**
|
|
* Marks each page within the specified address range as debug or non-debug.
|
|
* Debug addresses are not accessible from fastmem pointers.
|
|
*
|
|
* @param vaddr The virtual address indicating the start of the address range.
|
|
* @param size The size of the address range in bytes.
|
|
* @param debug Whether or not any pages within the address range should be
|
|
* marked as debug or non-debug.
|
|
*/
|
|
void MarkRegionDebug(Common::ProcessAddress vaddr, u64 size, bool debug);
|
|
|
|
void SetGPUDirtyManagers(std::span<Core::GPUDirtyMemoryManager> managers);
|
|
void InvalidateRegion(Common::ProcessAddress dest_addr, size_t size);
|
|
bool InvalidateNCE(Common::ProcessAddress vaddr, size_t size);
|
|
void FlushRegion(Common::ProcessAddress dest_addr, size_t size);
|
|
|
|
private:
|
|
Core::System& system;
|
|
|
|
struct Impl;
|
|
std::unique_ptr<Impl> impl;
|
|
};
|
|
|
|
enum GuestMemoryFlags : u32 {
|
|
Read = 1 << 0,
|
|
Write = 1 << 1,
|
|
Safe = 1 << 2,
|
|
Cached = 1 << 3,
|
|
|
|
SafeRead = Read | Safe,
|
|
SafeWrite = Write | Safe,
|
|
SafeReadWrite = SafeRead | SafeWrite,
|
|
SafeReadCachedWrite = SafeReadWrite | Cached,
|
|
|
|
UnsafeRead = Read,
|
|
UnsafeWrite = Write,
|
|
UnsafeReadWrite = UnsafeRead | UnsafeWrite,
|
|
UnsafeReadCachedWrite = UnsafeReadWrite | Cached,
|
|
};
|
|
|
|
namespace {
|
|
template <typename M, typename T, GuestMemoryFlags FLAGS>
|
|
class GuestMemory {
|
|
using iterator = T*;
|
|
using const_iterator = const T*;
|
|
using value_type = T;
|
|
using element_type = T;
|
|
using iterator_category = std::contiguous_iterator_tag;
|
|
|
|
public:
|
|
GuestMemory() = delete;
|
|
explicit GuestMemory(M& memory, u64 addr, std::size_t size,
|
|
Common::ScratchBuffer<T>* backup = nullptr)
|
|
: m_memory{memory}, m_addr{addr}, m_size{size} {
|
|
static_assert(FLAGS & GuestMemoryFlags::Read || FLAGS & GuestMemoryFlags::Write);
|
|
if constexpr (FLAGS & GuestMemoryFlags::Read) {
|
|
Read(addr, size, backup);
|
|
}
|
|
}
|
|
|
|
~GuestMemory() = default;
|
|
|
|
T* data() noexcept {
|
|
return m_data_span.data();
|
|
}
|
|
|
|
const T* data() const noexcept {
|
|
return m_data_span.data();
|
|
}
|
|
|
|
size_t size() const noexcept {
|
|
return m_size;
|
|
}
|
|
|
|
size_t size_bytes() const noexcept {
|
|
return this->size() * sizeof(T);
|
|
}
|
|
|
|
[[nodiscard]] T* begin() noexcept {
|
|
return this->data();
|
|
}
|
|
|
|
[[nodiscard]] const T* begin() const noexcept {
|
|
return this->data();
|
|
}
|
|
|
|
[[nodiscard]] T* end() noexcept {
|
|
return this->data() + this->size();
|
|
}
|
|
|
|
[[nodiscard]] const T* end() const noexcept {
|
|
return this->data() + this->size();
|
|
}
|
|
|
|
T& operator[](size_t index) noexcept {
|
|
return m_data_span[index];
|
|
}
|
|
|
|
const T& operator[](size_t index) const noexcept {
|
|
return m_data_span[index];
|
|
}
|
|
|
|
void SetAddressAndSize(u64 addr, std::size_t size) noexcept {
|
|
m_addr = addr;
|
|
m_size = size;
|
|
m_addr_changed = true;
|
|
}
|
|
|
|
std::span<T> Read(u64 addr, std::size_t size,
|
|
Common::ScratchBuffer<T>* backup = nullptr) noexcept {
|
|
m_addr = addr;
|
|
m_size = size;
|
|
if (m_size == 0) {
|
|
m_is_data_copy = true;
|
|
return {};
|
|
}
|
|
|
|
if (this->TrySetSpan()) {
|
|
if constexpr (FLAGS & GuestMemoryFlags::Safe) {
|
|
m_memory.FlushRegion(m_addr, this->size_bytes());
|
|
}
|
|
} else {
|
|
if (backup) {
|
|
backup->resize_destructive(this->size());
|
|
m_data_span = *backup;
|
|
} else {
|
|
m_data_copy.resize(this->size());
|
|
m_data_span = std::span(m_data_copy);
|
|
}
|
|
m_is_data_copy = true;
|
|
m_span_valid = true;
|
|
if constexpr (FLAGS & GuestMemoryFlags::Safe) {
|
|
m_memory.ReadBlock(m_addr, this->data(), this->size_bytes());
|
|
} else {
|
|
m_memory.ReadBlockUnsafe(m_addr, this->data(), this->size_bytes());
|
|
}
|
|
}
|
|
return m_data_span;
|
|
}
|
|
|
|
void Write(std::span<T> write_data) noexcept {
|
|
if constexpr (FLAGS & GuestMemoryFlags::Cached) {
|
|
m_memory.WriteBlockCached(m_addr, write_data.data(), this->size_bytes());
|
|
} else if constexpr (FLAGS & GuestMemoryFlags::Safe) {
|
|
m_memory.WriteBlock(m_addr, write_data.data(), this->size_bytes());
|
|
} else {
|
|
m_memory.WriteBlockUnsafe(m_addr, write_data.data(), this->size_bytes());
|
|
}
|
|
}
|
|
|
|
bool TrySetSpan() noexcept {
|
|
if (u8* ptr = m_memory.GetSpan(m_addr, this->size_bytes()); ptr) {
|
|
m_data_span = {reinterpret_cast<T*>(ptr), this->size()};
|
|
m_span_valid = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected:
|
|
bool IsDataCopy() const noexcept {
|
|
return m_is_data_copy;
|
|
}
|
|
|
|
bool AddressChanged() const noexcept {
|
|
return m_addr_changed;
|
|
}
|
|
|
|
M& m_memory;
|
|
u64 m_addr{};
|
|
size_t m_size{};
|
|
std::span<T> m_data_span{};
|
|
std::vector<T> m_data_copy{};
|
|
bool m_span_valid{false};
|
|
bool m_is_data_copy{false};
|
|
bool m_addr_changed{false};
|
|
};
|
|
|
|
template <typename M, typename T, GuestMemoryFlags FLAGS>
|
|
class GuestMemoryScoped : public GuestMemory<M, T, FLAGS> {
|
|
public:
|
|
GuestMemoryScoped() = delete;
|
|
explicit GuestMemoryScoped(M& memory, u64 addr, std::size_t size,
|
|
Common::ScratchBuffer<T>* backup = nullptr)
|
|
: GuestMemory<M, T, FLAGS>(memory, addr, size, backup) {
|
|
if constexpr (!(FLAGS & GuestMemoryFlags::Read)) {
|
|
if (!this->TrySetSpan()) {
|
|
if (backup) {
|
|
this->m_data_span = *backup;
|
|
this->m_span_valid = true;
|
|
this->m_is_data_copy = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
~GuestMemoryScoped() {
|
|
if constexpr (FLAGS & GuestMemoryFlags::Write) {
|
|
if (this->size() == 0) [[unlikely]] {
|
|
return;
|
|
}
|
|
|
|
if (this->AddressChanged() || this->IsDataCopy()) {
|
|
ASSERT(this->m_span_valid);
|
|
if constexpr (FLAGS & GuestMemoryFlags::Cached) {
|
|
this->m_memory.WriteBlockCached(this->m_addr, this->data(), this->size_bytes());
|
|
} else if constexpr (FLAGS & GuestMemoryFlags::Safe) {
|
|
this->m_memory.WriteBlock(this->m_addr, this->data(), this->size_bytes());
|
|
} else {
|
|
this->m_memory.WriteBlockUnsafe(this->m_addr, this->data(), this->size_bytes());
|
|
}
|
|
} else if constexpr (FLAGS & GuestMemoryFlags::Safe) {
|
|
this->m_memory.InvalidateRegion(this->m_addr, this->size_bytes());
|
|
}
|
|
}
|
|
}
|
|
};
|
|
} // namespace
|
|
|
|
template <typename T, GuestMemoryFlags FLAGS>
|
|
using CpuGuestMemory = GuestMemory<Memory, T, FLAGS>;
|
|
template <typename T, GuestMemoryFlags FLAGS>
|
|
using CpuGuestMemoryScoped = GuestMemoryScoped<Memory, T, FLAGS>;
|
|
template <typename T, GuestMemoryFlags FLAGS>
|
|
using GpuGuestMemory = GuestMemory<Tegra::MemoryManager, T, FLAGS>;
|
|
template <typename T, GuestMemoryFlags FLAGS>
|
|
using GpuGuestMemoryScoped = GuestMemoryScoped<Tegra::MemoryManager, T, FLAGS>;
|
|
} // namespace Core::Memory
|