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34 lines
1.2 KiB
C
34 lines
1.2 KiB
C
/*
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* Copyright (c) 2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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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#pragma once
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#include "exceptions.h"
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#include "sysreg.h"
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static inline u64 computeCntvct(const ExceptionStackFrame *frame)
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{
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return frame->cntpct_el0 - currentCoreCtx->totalTimeInHypervisor;
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}
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static inline void writeEmulatedPhysicalCompareValue(ExceptionStackFrame *frame, u64 val)
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{
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// We lied about the value of cntpct, so we need to compute the time delta
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// the guest actually intended to use...
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u64 vct = computeCntvct(frame);
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currentCoreCtx->emulPtimerCval = val;
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SET_SYSREG(cntp_cval_el0, frame->cntpct_el0 + (val - vct));
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}
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