INSANEMODE/yuzu
1
0
Fork 0
mirror of https://github.com/yuzu-emu/yuzu.git synced 2025-06-12 14:17:56 -05:00
Code Issues Packages Projects Releases Wiki Activity

Kernel/SharedMemory: Properly implemented shared memory support.

Browse Source 
Applications can request the kernel to allocate a piece of the linear heap for them when creating a shared memory object.
Shared memory areas are now properly mapped into the target processes when calling svcMapMemoryBlock.

Removed the APT Shared Font hack as it is no longer needed.
This commit is contained in:
Subv
2016-04-17 21:07:52 -05:00
parent 42a50da76b
commit 1bd0cf542f
10 changed files with 147 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/core/hle/service/apt/apt.cpp
View File

@ -37,8 +37,6 @@ static Kernel::SharedPtr<Kernel::Mutex> lock;
static Kernel::SharedPtr<Kernel::Event> notification_event; ///< APT notification event
static Kernel::SharedPtr<Kernel::Event> parameter_event; ///< APT parameter event
static std::shared_ptr<std::vector<u8>> shared_font;
static u32 cpu_percent; ///< CPU time available to the running application
/// Parameter data to be returned in the next call to Glance/ReceiveParameter
@ -74,23 +72,14 @@ void Initialize(Service::Interface* self) {
void GetSharedFont(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
if (shared_font != nullptr) {
// TODO(yuriks): This is a hack to keep this working right now even with our completely
// broken shared memory system.
shared_font_mem->fixed_address = SHARED_FONT_VADDR;
Kernel::g_current_process->vm_manager.MapMemoryBlock(shared_font_mem->fixed_address,
shared_font, 0, shared_font_mem->size, Kernel::MemoryState::Shared);
cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
cmd_buff[2] = SHARED_FONT_VADDR;
cmd_buff[3] = IPC::MoveHandleDesc();
cmd_buff[4] = Kernel::g_handle_table.Create(shared_font_mem).MoveFrom();
} else {
cmd_buff[0] = IPC::MakeHeader(0x44, 1, 0);
cmd_buff[1] = -1; // Generic error (not really possible to verify this on hardware)
LOG_ERROR(Kernel_SVC, "called, but %s has not been loaded!", SHARED_FONT);
}
cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
// Since the SharedMemory interface doesn't provide the address at which the memory was allocated,
// the APT service calculates this address by scanning the entire address space (using svcQueryMemory)
// and searches for an allocation of the same size as the Shared Font.
cmd_buff[2] = Memory::PhysicalToVirtualAddress(shared_font_mem->linear_heap_phys_address);
cmd_buff[3] = IPC::MoveHandleDesc();
cmd_buff[4] = Kernel::g_handle_table.Create(shared_font_mem).MoveFrom();
}
void NotifyToWait(Service::Interface* self) {
@ -433,14 +422,12 @@ void Init() {
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
// Read shared font data
shared_font = std::make_shared<std::vector<u8>>((size_t)file.GetSize());
file.ReadBytes(shared_font->data(), shared_font->size());
// Create shared font memory object
using Kernel::MemoryPermission;
shared_font_mem = Kernel::SharedMemory::Create(3 * 1024 * 1024, // 3MB
MemoryPermission::ReadWrite, MemoryPermission::Read, "APT_U:shared_font_mem");
shared_font_mem = Kernel::SharedMemory::Create(nullptr, 0x332000, // 3272 KB
MemoryPermission::ReadWrite, MemoryPermission::Read, 0, Kernel::MemoryRegion::SYSTEM, "APT:SharedFont");
// Read shared font data
file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
} else {
LOG_WARNING(Service_APT, "Unable to load shared font: %s", filepath.c_str());
shared_font_mem = nullptr;
@ -459,7 +446,6 @@ void Init() {
}
void Shutdown() {
shared_font = nullptr;
shared_font_mem = nullptr;
lock = nullptr;
notification_event = nullptr;