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Luma3DS-3GX/k11_extension/source/svc.c

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/*
* This file is part of Luma3DS
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* Copyright (C) 2016-2020 Aurora Wright, TuxSH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
* * Requiring preservation of specified reasonable legal notices or
* author attributions in that material or in the Appropriate Legal
* Notices displayed by works containing it.
* * Prohibiting misrepresentation of the origin of that material,
* or requiring that modified versions of such material be marked in
* reasonable ways as different from the original version.
*/
#include <string.h>
#include "synchronization.h"
#include "svc.h"
#include "svc/ControlMemory.h"
#include "svc/GetHandleInfo.h"
#include "svc/GetSystemInfo.h"
#include "svc/GetProcessInfo.h"
#include "svc/GetThreadInfo.h"
#include "svc/GetCFWInfo.h"
#include "svc/ConnectToPort.h"
#include "svc/SendSyncRequest.h"
#include "svc/Break.h"
#include "svc/SetGpuProt.h"
#include "svc/SetWifiEnabled.h"
#include "svc/Backdoor.h"
#include "svc/KernelSetState.h"
#include "svc/CustomBackdoor.h"
#include "svc/MapProcessMemoryEx.h"
#include "svc/UnmapProcessMemoryEx.h"
#include "svc/ControlService.h"
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#include "svc/ControlProcess.h"
#include "svc/CopyHandle.h"
#include "svc/TranslateHandle.h"
void *officialSVCs[0x7E] = {NULL};
void signalSvcEntry(u8 *pageEnd)
{
u32 svcId = (u32) *(u8 *)(pageEnd - 0xB5);
KProcess *currentProcess = currentCoreContext->objectContext.currentProcess;
if(svcId == 0xFE)
svcId = *(u32 *)(pageEnd - 0x110 + 8 * 4); // r12 ; note: max theortical SVC atm: 0x3FFFFFFF. We don't support catching svcIds >= 0x100 atm either
// Since DBGEVENT_SYSCALL_ENTRY is non blocking, we'll cheat using EXCEVENT_UNDEFINED_SYSCALL (debug->svcId is fortunately an u16!)
if(debugOfProcess(currentProcess) != NULL && shouldSignalSyscallDebugEvent(currentProcess, svcId))
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{
SignalDebugEvent(DBGEVENT_OUTPUT_STRING, 0xFFFFFFFE, svcId);
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}
}
void signalSvcReturn(u8 *pageEnd)
{
u32 svcId = (u32) *(u8 *)(pageEnd - 0xB5);
KProcess *currentProcess = currentCoreContext->objectContext.currentProcess;
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u32 flags = KPROCESS_GET_RVALUE(currentProcess, customFlags);
if(svcId == 0xFE)
svcId = *(u32 *)(pageEnd - 0x110 + 8 * 4); // r12 ; note: max theortical SVC atm: 0x1FFFFFFF. We don't support catching svcIds >= 0x100 atm either
// Since DBGEVENT_SYSCALL_RETURN is non blocking, we'll cheat using EXCEVENT_UNDEFINED_SYSCALL (debug->svcId is fortunately an u16!)
if(debugOfProcess(currentProcess) != NULL && shouldSignalSyscallDebugEvent(currentProcess, svcId))
SignalDebugEvent(DBGEVENT_OUTPUT_STRING, 0xFFFFFFFF, svcId);
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// Signal if the memory layout of the process changed
if (flags & SignalOnMemLayoutChanges && flags & MemLayoutChanged)
{
*KPROCESS_GET_PTR(currentProcess, customFlags) = flags & ~MemLayoutChanged;
SignalEvent(KPROCESS_GET_RVALUE(currentProcess, onMemoryLayoutChangeEvent));
}
}
void postprocessSvc(void)
{
KThread *currentThread = currentCoreContext->objectContext.currentThread;
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if(!currentThread->shallTerminate && rosalinaThreadLockPredicate(currentThread, rosalinaState & 5))
rosalinaRescheduleThread(currentThread, true);
officialPostProcessSvc();
}
void *svcHook(u8 *pageEnd)
{
KProcess *currentProcess = currentCoreContext->objectContext.currentProcess;
u32 svcId = *(u8 *)(pageEnd - 0xB5);
if(svcId == 0xFE)
svcId = *(u32 *)(pageEnd - 0x110 + 8 * 4); // r12 ; note: max theortical SVC atm: 0x3FFFFFFF. We don't support catching svcIds >= 0x100 atm either
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switch(svcId)
{
case 0x01:
return ControlMemoryHookWrapper;
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case 0x03: /* svcExitProcess */
{
// Signal that the process is about to be terminated
u32 flags = KPROCESS_GET_RVALUE(currentProcess, customFlags);
if (flags & SignalOnExit)
{
SignalEvent(KPROCESS_GET_RVALUE(currentProcess, onProcessExitEvent));
KEvent* event = (KEvent *)KProcessHandleTable__ToKAutoObject(handleTableOfProcess(currentProcess),
KPROCESS_GET_RVALUE(currentProcess, resumeProcessExitEvent));
((KAutoObject *)event)->vtable->DecrementReferenceCount((KAutoObject *)event);
}
return officialSVCs[0x3];
}
case 0x29:
return GetHandleInfoHookWrapper;
case 0x2A:
return GetSystemInfoHookWrapper;
case 0x2B:
return GetProcessInfoHookWrapper;
case 0x2C:
return GetThreadInfoHookWrapper;
case 0x2D:
return ConnectToPortHookWrapper;
case 0x2E:
return GetCFWInfo; // DEPRECATED
case 0x32:
return SendSyncRequestHook;
case 0x3C:
return (debugOfProcess(currentProcess) != NULL) ? officialSVCs[0x3C] : (void *)Break;
case 0x59:
return SetGpuProt;
case 0x5A:
return SetWifiEnabled;
case 0x7B:
return Backdoor;
case 0x7C:
return KernelSetStateHook;
case 0x80:
return CustomBackdoor;
case 0x90:
return convertVAToPA;
case 0x91:
return flushDataCacheRange;
case 0x92:
return flushEntireDataCache;
case 0x93:
return invalidateInstructionCacheRange;
case 0x94:
return invalidateEntireInstructionCache;
case 0xA0:
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return MapProcessMemoryExWrapper;
case 0xA1:
return UnmapProcessMemoryEx;
case 0xA2:
return ControlMemoryEx;
case 0xB0:
return ControlService;
case 0xB1:
return CopyHandleWrapper;
case 0xB2:
return TranslateHandleWrapper;
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case 0xB3:
return ControlProcess;
default:
return (svcId <= 0x7D) ? officialSVCs[svcId] : NULL;
}
}