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