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@ -4,10 +4,12 @@
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#include "common/common.h"
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#include "common/file_util.h"
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#include "core/hle/hle.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/mutex.h"
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#include "core/hle/kernel/shared_memory.h"
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#include "apt_u.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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@ -15,7 +17,19 @@
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namespace APT_U {
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// Address used for shared font (as observed on HW)
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// TODO(bunnei): This is the hard-coded address where we currently dump the shared font from via
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// https://github.com/citra-emu/3dsutils. This is technically a hack, and will not work at any
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// address other than 0x18000000 due to internal pointers in the shared font dump that would need to
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// be relocated. This might be fixed by dumping the shared font @ address 0x00000000 and then
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// correctly mapping it in Citra, however we still do not understand how the mapping is determined.
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static const VAddr SHARED_FONT_VADDR = 0x18000000;
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// Handle to shared memory region designated to for shared system font
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static Handle shared_font_mem = 0;
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static Handle lock_handle = 0;
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static std::vector<u8> shared_font;
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/// Signals used by APT functions
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enum class SignalType : u32 {
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@ -84,18 +98,18 @@ void InquireNotification(Service::Interface* self) {
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* state so that this command will return an error if this command is used again if parameters were
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* not set again. This is called when the second Initialize event is triggered. It returns a signal
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* type indicating why it was triggered.
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* Inputs:
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* 1 : AppID
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* 2 : Parameter buffer size, max size is 0x1000
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unknown, for now assume AppID of the process which sent these parameters
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* 3 : Unknown, for now assume Signal type
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* 4 : Actual parameter buffer size, this is <= to the the input size
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* 5 : Value
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* 6 : Handle from the source process which set the parameters, likely used for shared memory
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* 7 : Size
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* 8 : Output parameter buffer ptr
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* Inputs:
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* 1 : AppID
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* 2 : Parameter buffer size, max size is 0x1000
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unknown, for now assume AppID of the process which sent these parameters
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* 3 : Unknown, for now assume Signal type
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* 4 : Actual parameter buffer size, this is <= to the the input size
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* 5 : Value
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* 6 : Handle from the source process which set the parameters, likely used for shared memory
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* 7 : Size
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* 8 : Output parameter buffer ptr
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*/
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void ReceiveParameter(Service::Interface* self) {
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u32* cmd_buff = Service::GetCommandBuffer();
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@ -115,18 +129,18 @@ void ReceiveParameter(Service::Interface* self) {
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* APT_U::GlanceParameter service function. This is exactly the same as APT_U::ReceiveParameter
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* (except for the word value prior to the output handle), except this will not clear the flag
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* (except when responseword[3]==8 || responseword[3]==9) in NS state.
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* Inputs:
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* 1 : AppID
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* 2 : Parameter buffer size, max size is 0x1000
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unknown, for now assume AppID of the process which sent these parameters
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* 3 : Unknown, for now assume Signal type
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* 4 : Actual parameter buffer size, this is <= to the the input size
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* 5 : Value
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* 6 : Handle from the source process which set the parameters, likely used for shared memory
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* 7 : Size
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* 8 : Output parameter buffer ptr
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* Inputs:
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* 1 : AppID
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* 2 : Parameter buffer size, max size is 0x1000
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Unknown, for now assume AppID of the process which sent these parameters
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* 3 : Unknown, for now assume Signal type
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* 4 : Actual parameter buffer size, this is <= to the the input size
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* 5 : Value
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* 6 : Handle from the source process which set the parameters, likely used for shared memory
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* 7 : Size
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* 8 : Output parameter buffer ptr
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*/
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void GlanceParameter(Service::Interface* self) {
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u32* cmd_buff = Service::GetCommandBuffer();
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@ -146,14 +160,14 @@ void GlanceParameter(Service::Interface* self) {
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/**
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* APT_U::AppletUtility service function
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* Inputs:
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* 1 : Unknown, but clearly used for something
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* 2 : Buffer 1 size (purpose is unknown)
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* 3 : Buffer 2 size (purpose is unknown)
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* 5 : Buffer 1 address (purpose is unknown)
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* 65 : Buffer 2 address (purpose is unknown)
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* Inputs:
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* 1 : Unknown, but clearly used for something
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* 2 : Buffer 1 size (purpose is unknown)
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* 3 : Buffer 2 size (purpose is unknown)
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* 5 : Buffer 1 address (purpose is unknown)
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* 65 : Buffer 2 address (purpose is unknown)
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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*/
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void AppletUtility(Service::Interface* self) {
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u32* cmd_buff = Service::GetCommandBuffer();
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@ -172,6 +186,34 @@ void AppletUtility(Service::Interface* self) {
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buffer1_addr, buffer2_addr);
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}
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/**
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* APT_U::GetSharedFont service function
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* Outputs:
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Virtual address of where shared font will be loaded in memory
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* 4 : Handle to shared font memory
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*/
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void GetSharedFont(Service::Interface* self) {
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DEBUG_LOG(KERNEL, "called");
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u32* cmd_buff = Service::GetCommandBuffer();
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if (!shared_font.empty()) {
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// TODO(bunnei): This function shouldn't copy the shared font every time it's called.
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// Instead, it should probably map the shared font as RO memory. We don't currently have
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// an easy way to do this, but the copy should be sufficient for now.
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memcpy(Memory::GetPointer(SHARED_FONT_VADDR), shared_font.data(), shared_font.size());
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cmd_buff[0] = 0x00440082;
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cmd_buff[1] = 0; // No error
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cmd_buff[2] = SHARED_FONT_VADDR;
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cmd_buff[4] = shared_font_mem;
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} else {
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cmd_buff[1] = -1; // Generic error (not really possible to verify this on hardware)
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ERROR_LOG(KERNEL, "called, but %s has not been loaded!", SHARED_FONT);
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}
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}
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const Interface::FunctionInfo FunctionTable[] = {
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{0x00010040, GetLockHandle, "GetLockHandle"},
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{0x00020080, Initialize, "Initialize"},
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@ -240,7 +282,7 @@ const Interface::FunctionInfo FunctionTable[] = {
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{0x00410040, nullptr, "ReceiveCaptureBufferInfo"},
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{0x00420080, nullptr, "SleepSystem"},
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{0x00430040, nullptr, "NotifyToWait"},
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{0x00440000, nullptr, "GetSharedFont"},
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{0x00440000, GetSharedFont, "GetSharedFont"},
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{0x00450040, nullptr, "GetWirelessRebootInfo"},
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{0x00460104, nullptr, "Wrap"},
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{0x00470104, nullptr, "Unwrap"},
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@ -259,9 +301,33 @@ const Interface::FunctionInfo FunctionTable[] = {
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// Interface class
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Interface::Interface() {
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Register(FunctionTable, ARRAY_SIZE(FunctionTable));
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// Load the shared system font (if available).
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// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
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// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
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// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
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// "shared_font.bin" in the Citra "sysdata" directory.
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shared_font.clear();
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std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
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FileUtil::CreateFullPath(filepath); // Create path if not already created
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FileUtil::IOFile file(filepath, "rb");
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if (file.IsOpen()) {
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// Read shared font data
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shared_font.resize(file.GetSize());
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file.ReadBytes(shared_font.data(), file.GetSize());
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// Create shared font memory object
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shared_font_mem = Kernel::CreateSharedMemory("APT_U:shared_font_mem");
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} else {
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WARN_LOG(KERNEL, "Unable to load shared font: %s", filepath.c_str());
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shared_font_mem = 0;
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}
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lock_handle = 0;
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Register(FunctionTable, ARRAY_SIZE(FunctionTable));
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}
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Interface::~Interface() {
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bunnei