6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*===--------------- usermsrintrin.h - USERMSR intrinsics -----------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __X86GPRINTRIN_H
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#error "Never use <usermsrintrin.h> directly; include <x86gprintrin.h> instead."
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#endif // __X86GPRINTRIN_H
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#ifndef __USERMSRINTRIN_H
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#define __USERMSRINTRIN_H
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#ifdef __x86_64__
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/// Reads the contents of a 64-bit MSR specified in \a __A into \a dst.
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///
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/// This intrinsic corresponds to the <c> URDMSR </c> instruction.
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/// \param __A
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/// An unsigned long long.
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///
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/// \code{.operation}
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/// DEST := MSR[__A]
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/// \endcode
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static __inline__ unsigned long long
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__attribute__((__always_inline__, __nodebug__, __target__("usermsr")))
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_urdmsr(unsigned long long __A) {
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return __builtin_ia32_urdmsr(__A);
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}
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/// Writes the contents of \a __B into the 64-bit MSR specified in \a __A.
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///
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/// This intrinsic corresponds to the <c> UWRMSR </c> instruction.
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///
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/// \param __A
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/// An unsigned long long.
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/// \param __B
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/// An unsigned long long.
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///
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/// \code{.operation}
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/// MSR[__A] := __B
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/// \endcode
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static __inline__ void
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__attribute__((__always_inline__, __nodebug__, __target__("usermsr")))
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_uwrmsr(unsigned long long __A, unsigned long long __B) {
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return __builtin_ia32_uwrmsr(__A, __B);
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}
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#endif // __x86_64__
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#endif // __USERMSRINTRIN_H
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