1/*===---- lwpintrin.h - LWP 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 <lwpintrin.h> directly; include <x86intrin.h> instead." 12#endif 13 14#ifndef __LWPINTRIN_H 15#define __LWPINTRIN_H 16 17/* Define the default attributes for the functions in this file. */ 18#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lwp"))) 19 20/// Parses the LWPCB at the specified address and enables 21/// profiling if valid. 22/// 23/// \headerfile <x86intrin.h> 24/// 25/// This intrinsic corresponds to the <c> LLWPCB </c> instruction. 26/// 27/// \param __addr 28/// Address to the new Lightweight Profiling Control Block (LWPCB). If the 29/// LWPCB is valid, writes the address into the LWP_CBADDR MSR and enables 30/// Lightweight Profiling. 31static __inline__ void __DEFAULT_FN_ATTRS 32__llwpcb (void *__addr) 33{ 34 __builtin_ia32_llwpcb(__addr); 35} 36 37/// Flushes the LWP state to memory and returns the address of the LWPCB. 38/// 39/// \headerfile <x86intrin.h> 40/// 41/// This intrinsic corresponds to the <c> SLWPCB </c> instruction. 42/// 43/// \return 44/// Address to the current Lightweight Profiling Control Block (LWPCB). 45/// If LWP is not currently enabled, returns NULL. 46static __inline__ void* __DEFAULT_FN_ATTRS 47__slwpcb (void) 48{ 49 return __builtin_ia32_slwpcb(); 50} 51 52/// Inserts programmed event record into the LWP event ring buffer 53/// and advances the ring buffer pointer. 54/// 55/// \headerfile <x86intrin.h> 56/// 57/// This intrinsic corresponds to the <c> LWPINS </c> instruction. 58/// 59/// \param DATA2 60/// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. 61/// \param DATA1 62/// A 32-bit value is inserted into the 32-bit Data1 field. 63/// \param FLAGS 64/// A 32-bit immediate value is inserted into the 32-bit Flags field. 65/// \returns If the ring buffer is full and LWP is running in Synchronized Mode, 66/// the event record overwrites the last record in the buffer, the MissedEvents 67/// counter in the LWPCB is incremented, the head pointer is not advanced, and 68/// 1 is returned. Otherwise 0 is returned. 69#define __lwpins32(DATA2, DATA1, FLAGS) \ 70 (__builtin_ia32_lwpins32((unsigned int) (DATA2), (unsigned int) (DATA1), \ 71 (unsigned int) (FLAGS))) 72 73/// Decrements the LWP programmed value sample event counter. If the result is 74/// negative, inserts an event record into the LWP event ring buffer in memory 75/// and advances the ring buffer pointer. 76/// 77/// \headerfile <x86intrin.h> 78/// 79/// This intrinsic corresponds to the <c> LWPVAL </c> instruction. 80/// 81/// \param DATA2 82/// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. 83/// \param DATA1 84/// A 32-bit value is inserted into the 32-bit Data1 field. 85/// \param FLAGS 86/// A 32-bit immediate value is inserted into the 32-bit Flags field. 87#define __lwpval32(DATA2, DATA1, FLAGS) \ 88 (__builtin_ia32_lwpval32((unsigned int) (DATA2), (unsigned int) (DATA1), \ 89 (unsigned int) (FLAGS))) 90 91#ifdef __x86_64__ 92 93/// Inserts programmed event record into the LWP event ring buffer 94/// and advances the ring buffer pointer. 95/// 96/// \headerfile <x86intrin.h> 97/// 98/// This intrinsic corresponds to the <c> LWPINS </c> instruction. 99/// 100/// \param DATA2 101/// A 64-bit value is inserted into the 64-bit Data2 field. 102/// \param DATA1 103/// A 32-bit value is inserted into the 32-bit Data1 field. 104/// \param FLAGS 105/// A 32-bit immediate value is inserted into the 32-bit Flags field. 106/// \returns If the ring buffer is full and LWP is running in Synchronized Mode, 107/// the event record overwrites the last record in the buffer, the MissedEvents 108/// counter in the LWPCB is incremented, the head pointer is not advanced, and 109/// 1 is returned. Otherwise 0 is returned. 110#define __lwpins64(DATA2, DATA1, FLAGS) \ 111 (__builtin_ia32_lwpins64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ 112 (unsigned int) (FLAGS))) 113 114/// Decrements the LWP programmed value sample event counter. If the result is 115/// negative, inserts an event record into the LWP event ring buffer in memory 116/// and advances the ring buffer pointer. 117/// 118/// \headerfile <x86intrin.h> 119/// 120/// This intrinsic corresponds to the <c> LWPVAL </c> instruction. 121/// 122/// \param DATA2 123/// A 64-bit value is and inserted into the 64-bit Data2 field. 124/// \param DATA1 125/// A 32-bit value is inserted into the 32-bit Data1 field. 126/// \param FLAGS 127/// A 32-bit immediate value is inserted into the 32-bit Flags field. 128#define __lwpval64(DATA2, DATA1, FLAGS) \ 129 (__builtin_ia32_lwpval64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ 130 (unsigned int) (FLAGS))) 131 132#endif 133 134#undef __DEFAULT_FN_ATTRS 135 136#endif /* __LWPINTRIN_H */ 137