155 lines
4.8 KiB
C
155 lines
4.8 KiB
C
/*
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* This file is part of Luma3DS
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* Copyright (C) 2016-2017 Aurora Wright, TuxSH
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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#include "svc/KernelSetState.h"
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#include "synchronization.h"
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#include "ipc.h"
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#include "memory.h"
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#define MAX_DEBUG 3
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static u32 nbEnabled = 0;
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static u32 maskedPids[MAX_DEBUG];
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static u32 masks[MAX_DEBUG][8] = {0};
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bool shouldSignalSyscallDebugEvent(KProcess *process, u8 svcId)
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{
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u32 pid = idOfProcess(process);
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u32 id;
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for(id = 0; id < nbEnabled && maskedPids[id] != pid; id++);
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if(id == MAX_DEBUG)
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return false;
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else
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return ((masks[id][svcId / 32] >> (31 - (svcId % 32))) & 1) != 0;
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}
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Result SetSyscallDebugEventMask(u32 pid, bool enable, const u32 *mask)
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{
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static KRecursiveLock syscallDebugEventMaskLock = { NULL };
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u32 tmpMask[8];
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if(enable && nbEnabled == MAX_DEBUG)
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return 0xC86018FF; // Out of resource (255)
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if(enable && !usrToKernelMemcpy8(&tmpMask, mask, 32))
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return 0xE0E01BF5;
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KRecursiveLock__Lock(criticalSectionLock);
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KRecursiveLock__Lock(&syscallDebugEventMaskLock);
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if(enable)
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{
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maskedPids[nbEnabled] = pid;
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memcpy(&masks[nbEnabled++], tmpMask, 32);
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}
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else
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{
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u32 id;
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for(id = 0; id < nbEnabled && maskedPids[id] != pid; id++);
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if(id == nbEnabled)
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{
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KRecursiveLock__Unlock(&syscallDebugEventMaskLock);
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KRecursiveLock__Unlock(criticalSectionLock);
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return 0xE0E01BFD; // out of range (it's not fully technically correct but meh)
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}
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for(u32 i = id; i < nbEnabled - 1; i++)
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{
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maskedPids[i] = maskedPids[i + 1];
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memcpy(&masks[i], &masks[i + 1], 32);
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}
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maskedPids[--nbEnabled] = 0;
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memset(&masks[nbEnabled], 0, 32);
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}
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KRecursiveLock__Unlock(&syscallDebugEventMaskLock);
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KRecursiveLock__Unlock(criticalSectionLock);
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return 0;
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}
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Result KernelSetStateHook(u32 type, u32 varg1, u32 varg2, u32 varg3)
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{
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Result res = 0;
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switch(type)
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{
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case 0x10000:
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{
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do
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{
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__ldrex((s32 *)&rosalinaState);
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}
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while(__strex((s32 *)&rosalinaState, (s32)(rosalinaState ^ varg1)));
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if(rosalinaState & 2)
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hasStartedRosalinaNetworkFuncsOnce = true;
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if(rosalinaState & 1)
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rosalinaLockAllThreads();
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else if(varg1 & 1)
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rosalinaUnlockAllThreads();
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break;
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}
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case 0x10001:
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{
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KRecursiveLock__Lock(criticalSectionLock);
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KRecursiveLock__Lock(&processLangemuLock);
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u32 i;
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for(i = 0; i < 0x40 && processLangemuAttributes[i].titleId != 0ULL; i++);
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if(i < 0x40)
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{
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processLangemuAttributes[i].titleId = ((u64)varg3 << 32) | (u32)varg2;
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processLangemuAttributes[i].state = (u8)(varg1 >> 24);
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processLangemuAttributes[i].country = (u8)(varg1 >> 16);
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processLangemuAttributes[i].language = (u8)(varg1 >> 8);
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processLangemuAttributes[i].region = (u8)((varg1 >> 4) & 0xf);
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processLangemuAttributes[i].mask = (u8)(varg1 & 0xf);
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}
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else
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res = 0xD8609013;
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KRecursiveLock__Unlock(&processLangemuLock);
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KRecursiveLock__Unlock(criticalSectionLock);
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break;
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}
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case 0x10002:
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{
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res = SetSyscallDebugEventMask(varg1, (bool)varg2, (const u32 *)varg3);
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break;
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}
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default:
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{
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res = KernelSetState(type, varg1, varg2, varg3);
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break;
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}
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}
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return res;
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}
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