clang/lib/Headers/rdpruintrin.h

   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.
  30 static __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 */