// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/common.h"
#include "common/file_util.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/service/apt_u.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace APT_U
namespace APT_U {
// Address used for shared font (as observed on HW)
// TODO(bunnei): This is the hard-coded address where we currently dump the shared font from via
// https://github.com/citra-emu/3dsutils. This is technically a hack, and will not work at any
// address other than 0x18000000 due to internal pointers in the shared font dump that would need to
// be relocated. This might be fixed by dumping the shared font @ address 0x00000000 and then
// correctly mapping it in Citra, however we still do not understand how the mapping is determined.
static const VAddr SHARED_FONT_VADDR = 0x18000000;
// Handle to shared memory region designated to for shared system font
static Handle shared_font_mem = 0;
static Handle lock_handle = 0;
static std::vector<u8> shared_font;
/// Signals used by APT functions
enum class SignalType : u32 {
None = 0x0,
AppJustStarted = 0x1,
ReturningToApp = 0xB,
ExitingApp = 0xC,
};
void Initialize(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[3] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "APT_U:Menu"); // APT menu event handle
cmd_buff[4] = Kernel::CreateEvent(RESETTYPE_ONESHOT, "APT_U:Pause"); // APT pause event handle
Kernel::SetEventLocked(cmd_buff[3], true);
Kernel::SetEventLocked(cmd_buff[4], false); // Fire start event
_assert_msg_(KERNEL, (0 != lock_handle), "Cannot initialize without lock");
Kernel::ReleaseMutex(lock_handle);
cmd_buff[1] = 0; // No error
}
void GetLockHandle(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 flags = cmd_buff[1]; // TODO(bunnei): Figure out the purpose of the flag field
if (0 == lock_handle) {
// TODO(bunnei): Verify if this is created here or at application boot?
lock_handle = Kernel::CreateMutex(false, "APT_U:Lock");
Kernel::ReleaseMutex(lock_handle);
}
cmd_buff[1] = 0; // No error
// Not sure what these parameters are used for, but retail apps check that they are 0 after
// GetLockHandle has been called.
cmd_buff[2] = 0;
cmd_buff[3] = 0;
cmd_buff[4] = 0;
cmd_buff[5] = lock_handle;
LOG_TRACE(Service_APT, "called handle=0x%08X", cmd_buff[5]);
}
void Enable(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 unk = cmd_buff[1]; // TODO(bunnei): What is this field used for?
cmd_buff[1] = 0; // No error
LOG_WARNING(Service_APT, "(STUBBED) called unk=0x%08X", unk);
}
void InquireNotification(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 app_id = cmd_buff[2];
cmd_buff[1] = 0; // No error
cmd_buff[2] = static_cast<u32>(SignalType::None); // Signal type
LOG_WARNING(Service_APT, "(STUBBED) called app_id=0x%08X", app_id);
}
/**
* APT_U::ReceiveParameter service function. This returns the current parameter data from NS state,
* from the source process which set the parameters. Once finished, NS will clear a flag in the NS
* state so that this command will return an error if this command is used again if parameters were
* not set again. This is called when the second Initialize event is triggered. It returns a signal
* type indicating why it was triggered.
* Inputs:
* 1 : AppID
* 2 : Parameter buffer size, max size is 0x1000
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Unknown, for now assume AppID of the process which sent these parameters
* 3 : Unknown, for now assume Signal type
* 4 : Actual parameter buffer size, this is <= to the the input size
* 5 : Value
* 6 : Handle from the source process which set the parameters, likely used for shared memory
* 7 : Size
* 8 : Output parameter buffer ptr
*/
void ReceiveParameter(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 app_id = cmd_buff[1];
u32 buffer_size = cmd_buff[2];
cmd_buff[1] = 0; // No error
cmd_buff[2] = 0;
cmd_buff[3] = static_cast<u32>(SignalType::AppJustStarted); // Signal type
cmd_buff[4] = 0x10; // Parameter buffer size (16)
cmd_buff[5] = 0;
cmd_buff[6] = 0;
cmd_buff[7] = 0;
LOG_WARNING(Service_APT, "(STUBBED) called app_id=0x%08X, buffer_size=0x%08X", app_id, buffer_size);
}
/**
* APT_U::GlanceParameter service function. This is exactly the same as APT_U::ReceiveParameter
* (except for the word value prior to the output handle), except this will not clear the flag
* (except when responseword[3]==8 || responseword[3]==9) in NS state.
* Inputs:
* 1 : AppID
* 2 : Parameter buffer size, max size is 0x1000
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Unknown, for now assume AppID of the process which sent these parameters
* 3 : Unknown, for now assume Signal type
* 4 : Actual parameter buffer size, this is <= to the the input size
* 5 : Value
* 6 : Handle from the source process which set the parameters, likely used for shared memory
* 7 : Size
* 8 : Output parameter buffer ptr
*/
void GlanceParameter(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 app_id = cmd_buff[1];
u32 buffer_size = cmd_buff[2];
cmd_buff[1] = 0; // No error
cmd_buff[2] = 0;
cmd_buff[3] = static_cast<u32>(SignalType::AppJustStarted); // Signal type
cmd_buff[4] = 0x10; // Parameter buffer size (16)
cmd_buff[5] = 0;
cmd_buff[6] = 0;
cmd_buff[7] = 0;
LOG_WARNING(Service_APT, "(STUBBED) called app_id=0x%08X, buffer_size=0x%08X", app_id, buffer_size);
}
/**
* APT_U::AppletUtility service function
* Inputs:
* 1 : Unknown, but clearly used for something
* 2 : Buffer 1 size (purpose is unknown)
* 3 : Buffer 2 size (purpose is unknown)
* 5 : Buffer 1 address (purpose is unknown)
* 65 : Buffer 2 address (purpose is unknown)
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
void AppletUtility(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
// These are from 3dbrew - I'm not really sure what they're used for.
u32 unk = cmd_buff[1];
u32 buffer1_size = cmd_buff[2];
u32 buffer2_size = cmd_buff[3];
u32 buffer1_addr = cmd_buff[5];
u32 buffer2_addr = cmd_buff[65];
cmd_buff[1] = 0; // No error
LOG_WARNING(Service_APT, "(STUBBED) called unk=0x%08X, buffer1_size=0x%08x, buffer2_size=0x%08x, "
"buffer1_addr=0x%08x, buffer2_addr=0x%08x", unk, buffer1_size, buffer2_size,
buffer1_addr, buffer2_addr);
}
/**
* APT_U::GetSharedFont service function
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Virtual address of where shared font will be loaded in memory
* 4 : Handle to shared font memory
*/
void GetSharedFont(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
if (!shared_font.empty()) {
// TODO(bunnei): This function shouldn't copy the shared font every time it's called.
// Instead, it should probably map the shared font as RO memory. We don't currently have
// an easy way to do this, but the copy should be sufficient for now.
memcpy(Memory::GetPointer(SHARED_FONT_VADDR), shared_font.data(), shared_font.size());
cmd_buff[0] = 0x00440082;
cmd_buff[1] = 0; // No error
cmd_buff[2] = SHARED_FONT_VADDR;
cmd_buff[4] = shared_font_mem;
} else {
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);
}
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010040, GetLockHandle, "GetLockHandle"},
{0x00020080, Initialize, "Initialize"},
{0x00030040, Enable, "Enable"},
{0x00040040, nullptr, "Finalize"},
{0x00050040, nullptr, "GetAppletManInfo"},
{0x00060040, nullptr, "GetAppletInfo"},
{0x00070000, nullptr, "GetLastSignaledAppletId"},
{0x00080000, nullptr, "CountRegisteredApplet"},
{0x00090040, nullptr, "IsRegistered"},
{0x000A0040, nullptr, "GetAttribute"},
{0x000B0040, InquireNotification, "InquireNotification"},
{0x000C0104, nullptr, "SendParameter"},
{0x000D0080, ReceiveParameter, "ReceiveParameter"},
{0x000E0080, GlanceParameter, "GlanceParameter"},
{0x000F0100, nullptr, "CancelParameter"},
{0x001000C2, nullptr, "DebugFunc"},
{0x001100C0, nullptr, "MapProgramIdForDebug"},
{0x00120040, nullptr, "SetHomeMenuAppletIdForDebug"},
{0x00130000, nullptr, "GetPreparationState"},
{0x00140040, nullptr, "SetPreparationState"},
{0x00150140, nullptr, "PrepareToStartApplication"},
{0x00160040, nullptr, "PreloadLibraryApplet"},
{0x00170040, nullptr, "FinishPreloadingLibraryApplet"},
{0x00180040, nullptr, "PrepareToStartLibraryApplet"},
{0x00190040, nullptr, "PrepareToStartSystemApplet"},
{0x001A0000, nullptr, "PrepareToStartNewestHomeMenu"},
{0x001B00C4, nullptr, "StartApplication"},
{0x001C0000, nullptr, "WakeupApplication"},
{0x001D0000, nullptr, "CancelApplication"},
{0x001E0084, nullptr, "StartLibraryApplet"},
{0x001F0084, nullptr, "StartSystemApplet"},
{0x00200044, nullptr, "StartNewestHomeMenu"},
{0x00210000, nullptr, "OrderToCloseApplication"},
{0x00220040, nullptr, "PrepareToCloseApplication"},
{0x00230040, nullptr, "PrepareToJumpToApplication"},
{0x00240044, nullptr, "JumpToApplication"},
{0x002500C0, nullptr, "PrepareToCloseLibraryApplet"},
{0x00260000, nullptr, "PrepareToCloseSystemApplet"},
{0x00270044, nullptr, "CloseApplication"},
{0x00280044, nullptr, "CloseLibraryApplet"},
{0x00290044, nullptr, "CloseSystemApplet"},
{0x002A0000, nullptr, "OrderToCloseSystemApplet"},
{0x002B0000, nullptr, "PrepareToJumpToHomeMenu"},
{0x002C0044, nullptr, "JumpToHomeMenu"},
{0x002D0000, nullptr, "PrepareToLeaveHomeMenu"},
{0x002E0044, nullptr, "LeaveHomeMenu"},
{0x002F0040, nullptr, "PrepareToLeaveResidentApplet"},
{0x00300044, nullptr, "LeaveResidentApplet"},
{0x00310100, nullptr, "PrepareToDoApplicationJump"},
{0x00320084, nullptr, "DoApplicationJump"},
{0x00330000, nullptr, "GetProgramIdOnApplicationJump"},
{0x00340084, nullptr, "SendDeliverArg"},
{0x00350080, nullptr, "ReceiveDeliverArg"},
{0x00360040, nullptr, "LoadSysMenuArg"},
{0x00370042, nullptr, "StoreSysMenuArg"},
{0x00380040, nullptr, "PreloadResidentApplet"},
{0x00390040, nullptr, "PrepareToStartResidentApplet"},
{0x003A0044, nullptr, "StartResidentApplet"},
{0x003B0040, nullptr, "CancelLibraryApplet"},
{0x003C0042, nullptr, "SendDspSleep"},
{0x003D0042, nullptr, "SendDspWakeUp"},
{0x003E0080, nullptr, "ReplySleepQuery"},
{0x003F0040, nullptr, "ReplySleepNotificationComplete"},
{0x00400042, nullptr, "SendCaptureBufferInfo"},
{0x00410040, nullptr, "ReceiveCaptureBufferInfo"},
{0x00420080, nullptr, "SleepSystem"},
{0x00430040, nullptr, "NotifyToWait"},
{0x00440000, GetSharedFont, "GetSharedFont"},
{0x00450040, nullptr, "GetWirelessRebootInfo"},
{0x00460104, nullptr, "Wrap"},
{0x00470104, nullptr, "Unwrap"},
{0x00480100, nullptr, "GetProgramInfo"},
{0x00490180, nullptr, "Reboot"},
{0x004A0040, nullptr, "GetCaptureInfo"},
{0x004B00C2, AppletUtility, "AppletUtility"},
{0x004C0000, nullptr, "SetFatalErrDispMode"},
{0x004D0080, nullptr, "GetAppletProgramInfo"},
{0x004E0000, nullptr, "HardwareResetAsync"},
{0x004F0080, nullptr, "SetApplicationCpuTimeLimit"},
{0x00500040, nullptr, "GetApplicationCpuTimeLimit"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
// Load the shared system font (if available).
// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
// "shared_font.bin" in the Citra "sysdata" directory.
shared_font.clear();
std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
FileUtil::CreateFullPath(filepath); // Create path if not already created
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
// Read shared font data
shared_font.resize((size_t)file.GetSize());
file.ReadBytes(shared_font.data(), (size_t)file.GetSize());
// Create shared font memory object
shared_font_mem = Kernel::CreateSharedMemory("APT_U:shared_font_mem");
} else {
LOG_WARNING(Service_APT, "Unable to load shared font: %s", filepath.c_str());
shared_font_mem = 0;
}
lock_handle = 0;
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
}
} // namespace
