mwaitxintrin.h (2244B) - Raw
1 /*===---- mwaitxintrin.h - MONITORX/MWAITX 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 #ifndef __X86INTRIN_H 11 #error "Never use <mwaitxintrin.h> directly; include <x86intrin.h> instead." 12 #endif 13 14 #ifndef __MWAITXINTRIN_H 15 #define __MWAITXINTRIN_H 16 17 /* Define the default attributes for the functions in this file. */ 18 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("mwaitx"))) 19 20 /// Establishes a linear address memory range to be monitored and puts 21 /// the processor in the monitor event pending state. Data stored in the 22 /// monitored address range causes the processor to exit the pending state. 23 /// 24 /// \headerfile <x86intrin.h> 25 /// 26 /// This intrinsic corresponds to the \c MONITORX instruction. 27 /// 28 /// \param __p 29 /// The memory range to be monitored. The size of the range is determined by 30 /// CPUID function 0000_0005h. 31 /// \param __extensions 32 /// Optional extensions for the monitoring state. 33 /// \param __hints 34 /// Optional hints for the monitoring state. 35 static __inline__ void __DEFAULT_FN_ATTRS 36 _mm_monitorx(void * __p, unsigned __extensions, unsigned __hints) 37 { 38 __builtin_ia32_monitorx(__p, __extensions, __hints); 39 } 40 41 /// Used with the \c MONITORX instruction to wait while the processor is in 42 /// the monitor event pending state. Data stored in the monitored address 43 /// range, or an interrupt, causes the processor to exit the pending state. 44 /// 45 /// \headerfile <x86intrin.h> 46 /// 47 /// This intrinsic corresponds to the \c MWAITX instruction. 48 /// 49 /// \param __extensions 50 /// Optional extensions for the monitoring state, which can vary by 51 /// processor. 52 /// \param __hints 53 /// Optional hints for the monitoring state, which can vary by processor. 54 static __inline__ void __DEFAULT_FN_ATTRS 55 _mm_mwaitx(unsigned __extensions, unsigned __hints, unsigned __clock) 56 { 57 __builtin_ia32_mwaitx(__extensions, __hints, __clock); 58 } 59 60 #undef __DEFAULT_FN_ATTRS 61 62 #endif /* __MWAITXINTRIN_H */