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lwpintrin.h
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/*===---- lwpintrin.h - LWP intrinsics -------------------------------------=== * * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. * See https://llvm.org/LICENSE.txt for license information. * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception * *===-----------------------------------------------------------------------=== */ #ifndef __X86INTRIN_H #error "Never use <lwpintrin.h> directly; include <x86intrin.h> instead." #endif #ifndef __LWPINTRIN_H #define __LWPINTRIN_H /* Define the default attributes for the functions in this file. */ #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lwp"))) /// Parses the LWPCB at the specified address and enables /// profiling if valid. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> LLWPCB </c> instruction. /// /// \param __addr /// Address to the new Lightweight Profiling Control Block (LWPCB). If the /// LWPCB is valid, writes the address into the LWP_CBADDR MSR and enables /// Lightweight Profiling. static __inline__ void __DEFAULT_FN_ATTRS __llwpcb (void *__addr) { __builtin_ia32_llwpcb(__addr); } /// Flushes the LWP state to memory and returns the address of the LWPCB. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> SLWPCB </c> instruction. /// /// \return /// Address to the current Lightweight Profiling Control Block (LWPCB). /// If LWP is not currently enabled, returns NULL. static __inline__ void* __DEFAULT_FN_ATTRS __slwpcb (void) { return __builtin_ia32_slwpcb(); } /// Inserts programmed event record into the LWP event ring buffer /// and advances the ring buffer pointer. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> LWPINS </c> instruction. /// /// \param DATA2 /// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. /// \param DATA1 /// A 32-bit value is inserted into the 32-bit Data1 field. /// \param FLAGS /// A 32-bit immediate value is inserted into the 32-bit Flags field. /// \returns If the ring buffer is full and LWP is running in Synchronized Mode, /// the event record overwrites the last record in the buffer, the MissedEvents /// counter in the LWPCB is incremented, the head pointer is not advanced, and /// 1 is returned. Otherwise 0 is returned. #define __lwpins32(DATA2, DATA1, FLAGS) \ (__builtin_ia32_lwpins32((unsigned int) (DATA2), (unsigned int) (DATA1), \ (unsigned int) (FLAGS))) /// Decrements the LWP programmed value sample event counter. If the result is /// negative, inserts an event record into the LWP event ring buffer in memory /// and advances the ring buffer pointer. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> LWPVAL </c> instruction. /// /// \param DATA2 /// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. /// \param DATA1 /// A 32-bit value is inserted into the 32-bit Data1 field. /// \param FLAGS /// A 32-bit immediate value is inserted into the 32-bit Flags field. #define __lwpval32(DATA2, DATA1, FLAGS) \ (__builtin_ia32_lwpval32((unsigned int) (DATA2), (unsigned int) (DATA1), \ (unsigned int) (FLAGS))) #ifdef __x86_64__ /// Inserts programmed event record into the LWP event ring buffer /// and advances the ring buffer pointer. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> LWPINS </c> instruction. /// /// \param DATA2 /// A 64-bit value is inserted into the 64-bit Data2 field. /// \param DATA1 /// A 32-bit value is inserted into the 32-bit Data1 field. /// \param FLAGS /// A 32-bit immediate value is inserted into the 32-bit Flags field. /// \returns If the ring buffer is full and LWP is running in Synchronized Mode, /// the event record overwrites the last record in the buffer, the MissedEvents /// counter in the LWPCB is incremented, the head pointer is not advanced, and /// 1 is returned. Otherwise 0 is returned. #define __lwpins64(DATA2, DATA1, FLAGS) \ (__builtin_ia32_lwpins64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ (unsigned int) (FLAGS))) /// Decrements the LWP programmed value sample event counter. If the result is /// negative, inserts an event record into the LWP event ring buffer in memory /// and advances the ring buffer pointer. /// /// \headerfile <x86intrin.h> /// /// This intrinsic corresponds to the <c> LWPVAL </c> instruction. /// /// \param DATA2 /// A 64-bit value is and inserted into the 64-bit Data2 field. /// \param DATA1 /// A 32-bit value is inserted into the 32-bit Data1 field. /// \param FLAGS /// A 32-bit immediate value is inserted into the 32-bit Flags field. #define __lwpval64(DATA2, DATA1, FLAGS) \ (__builtin_ia32_lwpval64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ (unsigned int) (FLAGS))) #endif #undef __DEFAULT_FN_ATTRS #endif /* __LWPINTRIN_H */