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| 1 | /*===--------------- usermsrintrin.h - USERMSR intrinsics -----------------=== |
|---|---|
| 2 | * |
| 3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | * See https://llvm.org/LICENSE.txt for license information. |
| 5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | * |
| 7 | *===-----------------------------------------------------------------------=== |
| 8 | */ |
| 9 | #ifndef __X86GPRINTRIN_H |
| 10 | #error "Never use <usermsrintrin.h> directly; include <x86gprintrin.h> instead." |
| 11 | #endif // __X86GPRINTRIN_H |
| 12 | |
| 13 | #ifndef __USERMSRINTRIN_H |
| 14 | #define __USERMSRINTRIN_H |
| 15 | #ifdef __x86_64__ |
| 16 | |
| 17 | /// Reads the contents of a 64-bit MSR specified in \a __A into \a dst. |
| 18 | /// |
| 19 | /// This intrinsic corresponds to the <c> URDMSR </c> instruction. |
| 20 | /// \param __A |
| 21 | /// An unsigned long long. |
| 22 | /// |
| 23 | /// \code{.operation} |
| 24 | /// DEST := MSR[__A] |
| 25 | /// \endcode |
| 26 | static __inline__ unsigned long long |
| 27 | __attribute__((__always_inline__, __nodebug__, __target__("usermsr"))) |
| 28 | _urdmsr(unsigned long long __A) { |
| 29 | return __builtin_ia32_urdmsr(__A); |
| 30 | } |
| 31 | |
| 32 | /// Writes the contents of \a __B into the 64-bit MSR specified in \a __A. |
| 33 | /// |
| 34 | /// This intrinsic corresponds to the <c> UWRMSR </c> instruction. |
| 35 | /// |
| 36 | /// \param __A |
| 37 | /// An unsigned long long. |
| 38 | /// \param __B |
| 39 | /// An unsigned long long. |
| 40 | /// |
| 41 | /// \code{.operation} |
| 42 | /// MSR[__A] := __B |
| 43 | /// \endcode |
| 44 | static __inline__ void |
| 45 | __attribute__((__always_inline__, __nodebug__, __target__("usermsr"))) |
| 46 | _uwrmsr(unsigned long long __A, unsigned long long __B) { |
| 47 | return __builtin_ia32_uwrmsr(__A, __B); |
| 48 | } |
| 49 | |
| 50 | #endif // __x86_64__ |
| 51 | #endif // __USERMSRINTRIN_H |
| 52 |
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