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 | /// 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 | /// 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 (void) |
62 | { |
63 | return __builtin_ia32_slwpcb(); |
64 | } |
65 | |
66 | /// 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 | /// 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 | /// 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 | /// 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 */ |
151 |