diff options
Diffstat (limited to 'src/core/hle/service')
| -rw-r--r-- | src/core/hle/service/apt_u.cpp | 134 |
1 files changed, 100 insertions, 34 deletions
diff --git a/src/core/hle/service/apt_u.cpp b/src/core/hle/service/apt_u.cpp index 4bb05ce40..181763724 100644 --- a/src/core/hle/service/apt_u.cpp +++ b/src/core/hle/service/apt_u.cpp @@ -4,10 +4,12 @@ #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 "apt_u.h" //////////////////////////////////////////////////////////////////////////////////////////////////// @@ -15,7 +17,19 @@ 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 { @@ -84,18 +98,18 @@ void InquireNotification(Service::Interface* self) { * 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 + * 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 = Service::GetCommandBuffer(); @@ -115,18 +129,18 @@ void ReceiveParameter(Service::Interface* self) { * 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 + * 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 = Service::GetCommandBuffer(); @@ -146,14 +160,14 @@ void GlanceParameter(Service::Interface* self) { /** * 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 + * 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 = Service::GetCommandBuffer(); @@ -172,6 +186,34 @@ void AppletUtility(Service::Interface* self) { 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) { + DEBUG_LOG(KERNEL, "called"); + + u32* cmd_buff = Service::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) + ERROR_LOG(KERNEL, "called, but %s has not been loaded!", SHARED_FONT); + } +} + const Interface::FunctionInfo FunctionTable[] = { {0x00010040, GetLockHandle, "GetLockHandle"}, {0x00020080, Initialize, "Initialize"}, @@ -240,7 +282,7 @@ const Interface::FunctionInfo FunctionTable[] = { {0x00410040, nullptr, "ReceiveCaptureBufferInfo"}, {0x00420080, nullptr, "SleepSystem"}, {0x00430040, nullptr, "NotifyToWait"}, - {0x00440000, nullptr, "GetSharedFont"}, + {0x00440000, GetSharedFont, "GetSharedFont"}, {0x00450040, nullptr, "GetWirelessRebootInfo"}, {0x00460104, nullptr, "Wrap"}, {0x00470104, nullptr, "Unwrap"}, @@ -259,9 +301,33 @@ const Interface::FunctionInfo FunctionTable[] = { // Interface class Interface::Interface() { - Register(FunctionTable, ARRAY_SIZE(FunctionTable)); + // 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(file.GetSize()); + file.ReadBytes(shared_font.data(), file.GetSize()); + + // Create shared font memory object + shared_font_mem = Kernel::CreateSharedMemory("APT_U:shared_font_mem"); + } else { + WARN_LOG(KERNEL, "Unable to load shared font: %s", filepath.c_str()); + shared_font_mem = 0; + } lock_handle = 0; + + Register(FunctionTable, ARRAY_SIZE(FunctionTable)); } Interface::~Interface() { |