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| 1 | +/*===---- lwpintrin.h - LWP intrinsics -------------------------------------=== |
| 2 | + * |
| 3 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 4 | + * of this software and associated documentation files (the "Software"), to deal |
| 5 | + * in the Software without restriction, including without limitation the rights |
| 6 | + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 7 | + * copies of the Software, and to permit persons to whom the Software is |
| 8 | + * furnished to do so, subject to the following conditions: |
| 9 | + * |
| 10 | + * The above copyright notice and this permission notice shall be included in |
| 11 | + * all copies or substantial portions of the Software. |
| 12 | + * |
| 13 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 14 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 15 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 16 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 17 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 18 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 19 | + * THE SOFTWARE. |
| 20 | + * |
| 21 | + *===-----------------------------------------------------------------------=== |
| 22 | + */ |
| 23 | + |
| 24 | +#ifndef __X86INTRIN_H |
| 25 | +#error "Never use <lwpintrin.h> directly; include <x86intrin.h> instead." |
| 26 | +#endif |
| 27 | + |
| 28 | +#ifndef __LWPINTRIN_H |
| 29 | +#define __LWPINTRIN_H |
| 30 | + |
| 31 | +/* Define the default attributes for the functions in this file. */ |
| 32 | +#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lwp"))) |
| 33 | + |
| 34 | +/// \brief Parses the LWPCB at the specified address and enables |
| 35 | +/// profiling if valid. |
| 36 | +/// |
| 37 | +/// \headerfile <x86intrin.h> |
| 38 | +/// |
| 39 | +/// This intrinsic corresponds to the <c> LLWPCB </c> instruction. |
| 40 | +/// |
| 41 | +/// \param __addr |
| 42 | +/// Address to the new Lightweight Profiling Control Block (LWPCB). If the |
| 43 | +/// LWPCB is valid, writes the address into the LWP_CBADDR MSR and enables |
| 44 | +/// Lightweight Profiling. |
| 45 | +static __inline__ void __DEFAULT_FN_ATTRS |
| 46 | +__llwpcb (void *__addr) |
| 47 | +{ |
| 48 | + __builtin_ia32_llwpcb(__addr); |
| 49 | +} |
| 50 | + |
| 51 | +/// \brief Flushes the LWP state to memory and returns the address of the LWPCB. |
| 52 | +/// |
| 53 | +/// \headerfile <x86intrin.h> |
| 54 | +/// |
| 55 | +/// This intrinsic corresponds to the <c> SLWPCB </c> instruction. |
| 56 | +/// |
| 57 | +/// \return |
| 58 | +/// Address to the current Lightweight Profiling Control Block (LWPCB). |
| 59 | +/// If LWP is not currently enabled, returns NULL. |
| 60 | +static __inline__ void* __DEFAULT_FN_ATTRS |
| 61 | +__slwpcb () |
| 62 | +{ |
| 63 | + return __builtin_ia32_slwpcb(); |
| 64 | +} |
| 65 | + |
| 66 | +/// \brief Inserts programmed event record into the LWP event ring buffer |
| 67 | +/// and advances the ring buffer pointer. |
| 68 | +/// |
| 69 | +/// \headerfile <x86intrin.h> |
| 70 | +/// |
| 71 | +/// This intrinsic corresponds to the <c> LWPINS </c> instruction. |
| 72 | +/// |
| 73 | +/// \param DATA2 |
| 74 | +/// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. |
| 75 | +/// \param DATA1 |
| 76 | +/// A 32-bit value is inserted into the 32-bit Data1 field. |
| 77 | +/// \param FLAGS |
| 78 | +/// A 32-bit immediate value is inserted into the 32-bit Flags field. |
| 79 | +/// \returns If the ring buffer is full and LWP is running in Synchronized Mode, |
| 80 | +/// the event record overwrites the last record in the buffer, the MissedEvents |
| 81 | +/// counter in the LWPCB is incremented, the head pointer is not advanced, and |
| 82 | +/// 1 is returned. Otherwise 0 is returned. |
| 83 | +#define __lwpins32(DATA2, DATA1, FLAGS) \ |
| 84 | + (__builtin_ia32_lwpins32((unsigned int) (DATA2), (unsigned int) (DATA1), \ |
| 85 | + (unsigned int) (FLAGS))) |
| 86 | + |
| 87 | +/// \brief Decrements the LWP programmed value sample event counter. If the result is |
| 88 | +/// negative, inserts an event record into the LWP event ring buffer in memory |
| 89 | +/// and advances the ring buffer pointer. |
| 90 | +/// |
| 91 | +/// \headerfile <x86intrin.h> |
| 92 | +/// |
| 93 | +/// This intrinsic corresponds to the <c> LWPVAL </c> instruction. |
| 94 | +/// |
| 95 | +/// \param DATA2 |
| 96 | +/// A 32-bit value is zero-extended and inserted into the 64-bit Data2 field. |
| 97 | +/// \param DATA1 |
| 98 | +/// A 32-bit value is inserted into the 32-bit Data1 field. |
| 99 | +/// \param FLAGS |
| 100 | +/// A 32-bit immediate value is inserted into the 32-bit Flags field. |
| 101 | +#define __lwpval32(DATA2, DATA1, FLAGS) \ |
| 102 | + (__builtin_ia32_lwpval32((unsigned int) (DATA2), (unsigned int) (DATA1), \ |
| 103 | + (unsigned int) (FLAGS))) |
| 104 | + |
| 105 | +#ifdef __x86_64__ |
| 106 | + |
| 107 | +/// \brief Inserts programmed event record into the LWP event ring buffer |
| 108 | +/// and advances the ring buffer pointer. |
| 109 | +/// |
| 110 | +/// \headerfile <x86intrin.h> |
| 111 | +/// |
| 112 | +/// This intrinsic corresponds to the <c> LWPINS </c> instruction. |
| 113 | +/// |
| 114 | +/// \param DATA2 |
| 115 | +/// A 64-bit value is inserted into the 64-bit Data2 field. |
| 116 | +/// \param DATA1 |
| 117 | +/// A 32-bit value is inserted into the 32-bit Data1 field. |
| 118 | +/// \param FLAGS |
| 119 | +/// A 32-bit immediate value is inserted into the 32-bit Flags field. |
| 120 | +/// \returns If the ring buffer is full and LWP is running in Synchronized Mode, |
| 121 | +/// the event record overwrites the last record in the buffer, the MissedEvents |
| 122 | +/// counter in the LWPCB is incremented, the head pointer is not advanced, and |
| 123 | +/// 1 is returned. Otherwise 0 is returned. |
| 124 | +#define __lwpins64(DATA2, DATA1, FLAGS) \ |
| 125 | + (__builtin_ia32_lwpins64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ |
| 126 | + (unsigned int) (FLAGS))) |
| 127 | + |
| 128 | +/// \brief Decrements the LWP programmed value sample event counter. If the result is |
| 129 | +/// negative, inserts an event record into the LWP event ring buffer in memory |
| 130 | +/// and advances the ring buffer pointer. |
| 131 | +/// |
| 132 | +/// \headerfile <x86intrin.h> |
| 133 | +/// |
| 134 | +/// This intrinsic corresponds to the <c> LWPVAL </c> instruction. |
| 135 | +/// |
| 136 | +/// \param DATA2 |
| 137 | +/// A 64-bit value is and inserted into the 64-bit Data2 field. |
| 138 | +/// \param DATA1 |
| 139 | +/// A 32-bit value is inserted into the 32-bit Data1 field. |
| 140 | +/// \param FLAGS |
| 141 | +/// A 32-bit immediate value is inserted into the 32-bit Flags field. |
| 142 | +#define __lwpval64(DATA2, DATA1, FLAGS) \ |
| 143 | + (__builtin_ia32_lwpval64((unsigned long long) (DATA2), (unsigned int) (DATA1), \ |
| 144 | + (unsigned int) (FLAGS))) |
| 145 | + |
| 146 | +#endif |
| 147 | + |
| 148 | +#undef __DEFAULT_FN_ATTRS |
| 149 | + |
| 150 | +#endif /* __LWPINTRIN_H */ |
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