blob: b77461c194980590a08883f0f190dee3f114734b [file] [log] [blame]
/*
* Copyright 2018 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <stddef.h>
#include "hf/arch/cpu.h"
#define read_msr(name) \
__extension__({ \
uintreg_t __v; \
__asm__ volatile("mrs %0, " #name : "=r"(__v)); \
__v; \
})
#define write_msr(name, value) \
__extension__({ \
__asm__ volatile("msr " #name ", %x0" \
: \
: "rZ"((uintreg_t)(value))); \
})