| /*===--------------- 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 |