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/*===--------------- usermsrintrin.h - USERMSR intrinsics -----------------===
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*
*===-----------------------------------------------------------------------===
*/
#ifndef __X86GPRINTRIN_H
#error "Never use <usermsrintrin.h> directly; include <x86gprintrin.h> instead."
#endif // __X86GPRINTRIN_H
#ifndef __USERMSRINTRIN_H
#define __USERMSRINTRIN_H
#ifdef __x86_64__
/// Reads the contents of a 64-bit MSR specified in \a __A into \a dst.
///
/// This intrinsic corresponds to the <c> URDMSR </c> instruction.
/// \param __A
/// An unsigned long long.
///
/// \code{.operation}
/// DEST := MSR[__A]
/// \endcode
static __inline__ unsigned long long
__attribute__((__always_inline__, __nodebug__, __target__("usermsr")))
_urdmsr(unsigned long long __A) {
return __builtin_ia32_urdmsr(__A);
}
/// Writes the contents of \a __B into the 64-bit MSR specified in \a __A.
///
/// This intrinsic corresponds to the <c> UWRMSR </c> instruction.
///
/// \param __A
/// An unsigned long long.
/// \param __B
/// An unsigned long long.
///
/// \code{.operation}
/// MSR[__A] := __B
/// \endcode
static __inline__ void
__attribute__((__always_inline__, __nodebug__, __target__("usermsr")))
_uwrmsr(unsigned long long __A, unsigned long long __B) {
return __builtin_ia32_uwrmsr(__A, __B);
}
#endif // __x86_64__
#endif // __USERMSRINTRIN_H