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Atmosphere/libraries/libmesosphere/include/mesosphere/kern_select_interrupt_manager.hpp
2020-12-18 13:31:01 -08:00

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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_select_interrupt_name.hpp>
#if defined(ATMOSPHERE_ARCH_ARM64)
#include <mesosphere/arch/arm64/kern_k_interrupt_manager.hpp>
namespace ams::kern {
using ams::kern::arch::arm64::KInterruptManager;
}
#else
#error "Unknown architecture for KInterruptManager"
#endif
namespace ams::kern {
/* Enable or disable interrupts for the lifetime of an object. */
class KScopedInterruptDisable {
NON_COPYABLE(KScopedInterruptDisable);
NON_MOVEABLE(KScopedInterruptDisable);
private:
u32 m_prev_intr_state;
public:
ALWAYS_INLINE KScopedInterruptDisable() : m_prev_intr_state(KInterruptManager::DisableInterrupts()) { /* ... */ }
ALWAYS_INLINE ~KScopedInterruptDisable() { KInterruptManager::RestoreInterrupts(m_prev_intr_state); }
};
class KScopedInterruptEnable {
NON_COPYABLE(KScopedInterruptEnable);
NON_MOVEABLE(KScopedInterruptEnable);
private:
u32 m_prev_intr_state;
public:
ALWAYS_INLINE KScopedInterruptEnable() : m_prev_intr_state(KInterruptManager::EnableInterrupts()) { /* ... */ }
ALWAYS_INLINE ~KScopedInterruptEnable() { KInterruptManager::RestoreInterrupts(m_prev_intr_state); }
};
}