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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | /*===---- lwpintrin.h - LWP intrinsics -------------------------------------=== |
| 2 | * |
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| 3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | * See https://llvm.org/LICENSE.txt for license information. |
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| 5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | * |
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| 7 | *===-----------------------------------------------------------------------=== |
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| 8 | */ |
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| 9 | |||
| 10 | #ifndef __X86INTRIN_H |
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| 11 | #error "Never use <lwpintrin.h> directly; include <x86intrin.h> instead." |
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| 12 | #endif |
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| 13 | |||
| 14 | #ifndef __LWPINTRIN_H |
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| 15 | #define __LWPINTRIN_H |
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| 16 | |||
| 17 | /* Define the default attributes for the functions in this file. */ |
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| 18 | #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lwp"))) |
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| 19 | |||
| 20 | /// Parses the LWPCB at the specified address and enables |
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| 21 | /// profiling if valid. |
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| 22 | /// |
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| 23 | /// \headerfile <x86intrin.h> |
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| 24 | /// |
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| 25 | /// This intrinsic corresponds to the <c> LLWPCB </c> instruction. |
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| 26 | /// |
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| 27 | /// \param __addr |
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| 28 | /// Address to the new Lightweight Profiling Control Block (LWPCB). If the |
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| 29 | /// LWPCB is valid, writes the address into the LWP_CBADDR MSR and enables |
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| 30 | /// Lightweight Profiling. |
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| 31 | static __inline__ void __DEFAULT_FN_ATTRS |
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| 32 | __llwpcb (void *__addr) |
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| 33 | { |
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| 34 | __builtin_ia32_llwpcb(__addr); |
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| 35 | } |
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| 36 | |||
| 37 | /// Flushes the LWP state to memory and returns the address of the LWPCB. |
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| 38 | /// |
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| 39 | /// \headerfile <x86intrin.h> |
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| 40 | /// |
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| 41 | /// This intrinsic corresponds to the <c> SLWPCB </c> instruction. |
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| 42 | /// |
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| 43 | /// \return |
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| 44 | /// Address to the current Lightweight Profiling Control Block (LWPCB). |
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| 45 | /// If LWP is not currently enabled, returns NULL. |
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| 46 | static __inline__ void* __DEFAULT_FN_ATTRS |
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| 47 | __slwpcb (void) |
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| 48 | { |
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| 49 | return __builtin_ia32_slwpcb(); |
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| 50 | } |
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| 51 | |||
| 52 | /// Inserts programmed event record into the LWP event ring buffer |
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| 53 | /// and advances the ring buffer pointer. |
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| 54 | /// |
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| 55 | /// \headerfile <x86intrin.h> |
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| 56 | /// |
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| 57 | /// This intrinsic corresponds to the <c> LWPINS </c> instruction. |
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| 58 | /// |
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| 59 | /// \param DATA2 |
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| 60 | /// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. |
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| 61 | /// \param DATA1 |
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| 62 | /// A 32-bit value is inserted into the 32-bit Data1 field. |
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| 63 | /// \param FLAGS |
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| 64 | /// A 32-bit immediate value is inserted into the 32-bit Flags field. |
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| 65 | /// \returns If the ring buffer is full and LWP is running in Synchronized Mode, |
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| 66 | /// the event record overwrites the last record in the buffer, the MissedEvents |
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| 67 | /// counter in the LWPCB is incremented, the head pointer is not advanced, and |
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| 68 | /// 1 is returned. Otherwise 0 is returned. |
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| 69 | #define __lwpins32(DATA2, DATA1, FLAGS) \ |
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| 70 | (__builtin_ia32_lwpins32((unsigned int) (DATA2), (unsigned int) (DATA1), \ |
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| 71 | (unsigned int) (FLAGS))) |
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| 72 | |||
| 73 | /// Decrements the LWP programmed value sample event counter. If the result is |
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| 74 | /// negative, inserts an event record into the LWP event ring buffer in memory |
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| 75 | /// and advances the ring buffer pointer. |
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| 76 | /// |
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| 77 | /// \headerfile <x86intrin.h> |
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| 78 | /// |
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| 79 | /// This intrinsic corresponds to the <c> LWPVAL </c> instruction. |
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| 80 | /// |
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| 81 | /// \param DATA2 |
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| 82 | /// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. |
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| 83 | /// \param DATA1 |
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| 84 | /// A 32-bit value is inserted into the 32-bit Data1 field. |
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| 85 | /// \param FLAGS |
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| 86 | /// A 32-bit immediate value is inserted into the 32-bit Flags field. |
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| 87 | #define __lwpval32(DATA2, DATA1, FLAGS) \ |
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| 88 | (__builtin_ia32_lwpval32((unsigned int) (DATA2), (unsigned int) (DATA1), \ |
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| 89 | (unsigned int) (FLAGS))) |
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| 90 | |||
| 91 | #ifdef __x86_64__ |
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| 92 | |||
| 93 | /// Inserts programmed event record into the LWP event ring buffer |
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| 94 | /// and advances the ring buffer pointer. |
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| 95 | /// |
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| 96 | /// \headerfile <x86intrin.h> |
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| 97 | /// |
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| 98 | /// This intrinsic corresponds to the <c> LWPINS </c> instruction. |
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| 99 | /// |
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| 100 | /// \param DATA2 |
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| 101 | /// A 64-bit value is inserted into the 64-bit Data2 field. |
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| 102 | /// \param DATA1 |
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| 103 | /// A 32-bit value is inserted into the 32-bit Data1 field. |
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| 104 | /// \param FLAGS |
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| 105 | /// A 32-bit immediate value is inserted into the 32-bit Flags field. |
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| 106 | /// \returns If the ring buffer is full and LWP is running in Synchronized Mode, |
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| 107 | /// the event record overwrites the last record in the buffer, the MissedEvents |
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| 108 | /// counter in the LWPCB is incremented, the head pointer is not advanced, and |
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| 109 | /// 1 is returned. Otherwise 0 is returned. |
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| 110 | #define __lwpins64(DATA2, DATA1, FLAGS) \ |
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| 111 | (__builtin_ia32_lwpins64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ |
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| 112 | (unsigned int) (FLAGS))) |
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| 113 | |||
| 114 | /// Decrements the LWP programmed value sample event counter. If the result is |
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| 115 | /// negative, inserts an event record into the LWP event ring buffer in memory |
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| 116 | /// and advances the ring buffer pointer. |
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| 117 | /// |
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| 118 | /// \headerfile <x86intrin.h> |
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| 119 | /// |
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| 120 | /// This intrinsic corresponds to the <c> LWPVAL </c> instruction. |
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| 121 | /// |
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| 122 | /// \param DATA2 |
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| 123 | /// A 64-bit value is and inserted into the 64-bit Data2 field. |
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| 124 | /// \param DATA1 |
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| 125 | /// A 32-bit value is inserted into the 32-bit Data1 field. |
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| 126 | /// \param FLAGS |
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| 127 | /// A 32-bit immediate value is inserted into the 32-bit Flags field. |
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| 128 | #define __lwpval64(DATA2, DATA1, FLAGS) \ |
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| 129 | (__builtin_ia32_lwpval64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ |
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| 130 | (unsigned int) (FLAGS))) |
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| 131 | |||
| 132 | #endif |
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| 133 | |||
| 134 | #undef __DEFAULT_FN_ATTRS |
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| 135 | |||
| 136 | #endif /* __LWPINTRIN_H */ |