Atmosphere/libraries/libexosphere/include/exosphere/hw/hw_arm64.hpp

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/*
* Copyright (c) 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 <vapours.hpp>
#include <exosphere/hw/hw_arm64_system_registers.hpp>
#include <exosphere/hw/hw_arm64_cache.hpp>
namespace ams::hw::arch::arm64 {
ALWAYS_INLINE void DataSynchronizationBarrier() {
__asm__ __volatile__("dsb sy" ::: "memory");
}
ALWAYS_INLINE void DataSynchronizationBarrierInnerShareable() {
__asm__ __volatile__("dsb ish" ::: "memory");
}
ALWAYS_INLINE void DataMemoryBarrier() {
__asm__ __volatile__("dmb sy" ::: "memory");
}
ALWAYS_INLINE void InstructionSynchronizationBarrier() {
__asm__ __volatile__("isb" ::: "memory");
}
ALWAYS_INLINE void WaitForInterrupt() {
__asm__ __volatile__("wfi" ::: "memory");
}
ALWAYS_INLINE void WaitForEvent() {
__asm__ __volatile__("wfe" ::: "memory");
}
ALWAYS_INLINE void SendEvent() {
__asm__ __volatile__("sev" ::: "memory");
}
ALWAYS_INLINE int CountLeadingZeros(u64 v) {
u64 z;
__asm__ __volatile__("clz %[z], %[v]" : [z]"=r"(z) : [v]"r"(v));
return z;
}
ALWAYS_INLINE int CountLeadingZeros(u32 v) {
u32 z;
__asm__ __volatile__("clz %w[z], %w[v]" : [z]"=r"(z) : [v]"r"(v));
return z;
}
ALWAYS_INLINE int GetCurrentCoreId() {
u64 mpidr;
HW_CPU_GET_MPIDR_EL1(mpidr);
return mpidr & 0xFF;
}
}