1/*===---- rdpruintrin.h - RDPRU 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
10#if !defined __X86INTRIN_H
11#error "Never use <rdpruintrin.h> directly; include <x86intrin.h> instead."
12#endif
13
14#ifndef __RDPRUINTRIN_H
15#define __RDPRUINTRIN_H
16
17/* Define the default attributes for the functions in this file. */
18#define __DEFAULT_FN_ATTRS \
19 __attribute__((__always_inline__, __nodebug__, __target__("rdpru")))
20
21
22/// Reads the content of a processor register.
23///
24/// \headerfile <x86intrin.h>
25///
26/// This intrinsic corresponds to the <c> RDPRU </c> instruction.
27///
28/// \param reg_id
29/// A processor register identifier.
30static __inline__ unsigned long long __DEFAULT_FN_ATTRS
31__rdpru (int reg_id)
32{
33 return __builtin_ia32_rdpru(reg_id);
34}
35
36#define __RDPRU_MPERF 0
37#define __RDPRU_APERF 1
38
39/// Reads the content of processor register MPERF.
40///
41/// \headerfile <x86intrin.h>
42///
43/// This intrinsic generates instruction <c> RDPRU </c> to read the value of
44/// register MPERF.
45#define __mperf() __builtin_ia32_rdpru(__RDPRU_MPERF)
46
47/// Reads the content of processor register APERF.
48///
49/// \headerfile <x86intrin.h>
50///
51/// This intrinsic generates instruction <c> RDPRU </c> to read the value of
52/// register APERF.
53#define __aperf() __builtin_ia32_rdpru(__RDPRU_APERF)
54
55#undef __DEFAULT_FN_ATTRS
56
57#endif /* __RDPRUINTRIN_H */