diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/CMakeLists.txt | 2 | ||||
-rw-r--r-- | src/core/hle/kernel/object.cpp | 1 | ||||
-rw-r--r-- | src/core/hle/kernel/object.h | 1 | ||||
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 13 | ||||
-rw-r--r-- | src/core/hle/kernel/transfer_memory.cpp | 73 | ||||
-rw-r--r-- | src/core/hle/kernel/transfer_memory.h | 91 |
6 files changed, 177 insertions, 4 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index 8ccb2d5f0..e8aefb6b4 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -140,6 +140,8 @@ add_library(core STATIC hle/kernel/svc_wrap.h hle/kernel/thread.cpp hle/kernel/thread.h + hle/kernel/transfer_memory.cpp + hle/kernel/transfer_memory.h hle/kernel/vm_manager.cpp hle/kernel/vm_manager.h hle/kernel/wait_object.cpp diff --git a/src/core/hle/kernel/object.cpp b/src/core/hle/kernel/object.cpp index 8870463d0..217144efc 100644 --- a/src/core/hle/kernel/object.cpp +++ b/src/core/hle/kernel/object.cpp @@ -23,6 +23,7 @@ bool Object::IsWaitable() const { case HandleType::Unknown: case HandleType::WritableEvent: case HandleType::SharedMemory: + case HandleType::TransferMemory: case HandleType::AddressArbiter: case HandleType::ResourceLimit: case HandleType::ClientPort: diff --git a/src/core/hle/kernel/object.h b/src/core/hle/kernel/object.h index 4c2505908..3f6baa094 100644 --- a/src/core/hle/kernel/object.h +++ b/src/core/hle/kernel/object.h @@ -22,6 +22,7 @@ enum class HandleType : u32 { WritableEvent, ReadableEvent, SharedMemory, + TransferMemory, Thread, Process, AddressArbiter, diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 77d0e3d96..c8b9e8aeb 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -32,6 +32,7 @@ #include "core/hle/kernel/svc.h" #include "core/hle/kernel/svc_wrap.h" #include "core/hle/kernel/thread.h" +#include "core/hle/kernel/transfer_memory.h" #include "core/hle/kernel/writable_event.h" #include "core/hle/lock.h" #include "core/hle/result.h" @@ -1577,11 +1578,15 @@ static ResultCode CreateTransferMemory(Handle* handle, VAddr addr, u64 size, u32 } auto& kernel = Core::System::GetInstance().Kernel(); - auto process = kernel.CurrentProcess(); - auto& handle_table = process->GetHandleTable(); - const auto shared_mem_handle = SharedMemory::Create(kernel, process, size, perms, perms, addr); + auto transfer_mem_handle = TransferMemory::Create(kernel, addr, size, perms); - CASCADE_RESULT(*handle, handle_table.Create(shared_mem_handle)); + auto& handle_table = kernel.CurrentProcess()->GetHandleTable(); + const auto result = handle_table.Create(std::move(transfer_mem_handle)); + if (result.Failed()) { + return result.Code(); + } + + *handle = *result; return RESULT_SUCCESS; } diff --git a/src/core/hle/kernel/transfer_memory.cpp b/src/core/hle/kernel/transfer_memory.cpp new file mode 100644 index 000000000..23228e1b5 --- /dev/null +++ b/src/core/hle/kernel/transfer_memory.cpp @@ -0,0 +1,73 @@ +// Copyright 2019 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "core/hle/kernel/errors.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/process.h" +#include "core/hle/kernel/shared_memory.h" +#include "core/hle/kernel/transfer_memory.h" +#include "core/hle/result.h" + +namespace Kernel { + +TransferMemory::TransferMemory(KernelCore& kernel) : Object{kernel} {} +TransferMemory::~TransferMemory() = default; + +SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_address, + size_t size, MemoryPermission permissions) { + SharedPtr<TransferMemory> transfer_memory{new TransferMemory(kernel)}; + + transfer_memory->base_address = base_address; + transfer_memory->memory_size = size; + transfer_memory->owner_permissions = permissions; + transfer_memory->owner_process = kernel.CurrentProcess(); + + return transfer_memory; +} + +ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermission permissions) { + if (memory_size != size) { + return ERR_INVALID_SIZE; + } + + if (owner_permissions != permissions) { + return ERR_INVALID_STATE; + } + + if (is_mapped) { + return ERR_INVALID_STATE; + } + + const auto map_state = owner_permissions == MemoryPermission::None + ? MemoryState::TransferMemoryIsolated + : MemoryState::TransferMemory; + auto& vm_manager = owner_process->VMManager(); + const auto map_result = vm_manager.MapMemoryBlock( + address, std::make_shared<std::vector<u8>>(size), 0, size, map_state); + + if (map_result.Failed()) { + return map_result.Code(); + } + + is_mapped = true; + return RESULT_SUCCESS; +} + +ResultCode TransferMemory::UnmapMemory(VAddr address, size_t size) { + if (memory_size != size) { + return ERR_INVALID_SIZE; + } + + auto& vm_manager = owner_process->VMManager(); + const auto result = vm_manager.UnmapRange(address, size); + + if (result.IsError()) { + return result; + } + + is_mapped = false; + return RESULT_SUCCESS; +} + +} // namespace Kernel diff --git a/src/core/hle/kernel/transfer_memory.h b/src/core/hle/kernel/transfer_memory.h new file mode 100644 index 000000000..ec294951e --- /dev/null +++ b/src/core/hle/kernel/transfer_memory.h @@ -0,0 +1,91 @@ +// Copyright 2019 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "core/hle/kernel/object.h" + +union ResultCode; + +namespace Kernel { + +class KernelCore; +class Process; + +enum class MemoryPermission : u32; + +/// Defines the interface for transfer memory objects. +/// +/// Transfer memory is typically used for the purpose of +/// transferring memory between separate process instances, +/// thus the name. +/// +class TransferMemory final : public Object { +public: + static constexpr HandleType HANDLE_TYPE = HandleType::TransferMemory; + + static SharedPtr<TransferMemory> Create(KernelCore& kernel, VAddr base_address, size_t size, + MemoryPermission permissions); + + TransferMemory(const TransferMemory&) = delete; + TransferMemory& operator=(const TransferMemory&) = delete; + + TransferMemory(TransferMemory&&) = delete; + TransferMemory& operator=(TransferMemory&&) = delete; + + std::string GetTypeName() const override { + return "TransferMemory"; + } + + std::string GetName() const override { + return GetTypeName(); + } + + HandleType GetHandleType() const override { + return HANDLE_TYPE; + } + + /// Attempts to map transfer memory with the given range and memory permissions. + /// + /// @param address The base address to being mapping memory at. + /// @param size The size of the memory to map, in bytes. + /// @param permissions The memory permissions to check against when mapping memory. + /// + /// @pre The given address, size, and memory permissions must all match + /// the same values that were given when creating the transfer memory + /// instance. + /// + ResultCode MapMemory(VAddr address, size_t size, MemoryPermission permissions); + + /// Unmaps the transfer memory with the given range + /// + /// @param address The base address to begin unmapping memory at. + /// @param size The size of the memory to unmap, in bytes. + /// + /// @pre The given address and size must be the same as the ones used + /// to create the transfer memory instance. + /// + ResultCode UnmapMemory(VAddr address, size_t size); + +private: + explicit TransferMemory(KernelCore& kernel); + ~TransferMemory() override; + + /// The base address for the memory managed by this instance. + VAddr base_address = 0; + + /// Size of the memory, in bytes, that this instance manages. + size_t memory_size = 0; + + /// The memory permissions that are applied to this instance. + MemoryPermission owner_permissions{}; + + /// The process that this transfer memory instance was created under. + Process* owner_process = nullptr; + + /// Whether or not this transfer memory instance has mapped memory. + bool is_mapped = false; +}; + +} // namespace Kernel |