1 /*===- InstrProfilingPlatformLinux.c - Profile data Linux platform ------===*\
2 |*
3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 |* See https://llvm.org/LICENSE.txt for license information.
5 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 |*
7 \*===----------------------------------------------------------------------===*/
8 
9 #if defined(__linux__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
10     (defined(__sun__) && defined(__svr4__)) || defined(__NetBSD__)
11 
12 #include <stdlib.h>
13 
14 #include "InstrProfiling.h"
15 
16 #define PROF_DATA_START INSTR_PROF_SECT_START(INSTR_PROF_DATA_COMMON)
17 #define PROF_DATA_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_DATA_COMMON)
18 #define PROF_NAME_START INSTR_PROF_SECT_START(INSTR_PROF_NAME_COMMON)
19 #define PROF_NAME_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_NAME_COMMON)
20 #define PROF_CNTS_START INSTR_PROF_SECT_START(INSTR_PROF_CNTS_COMMON)
21 #define PROF_CNTS_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_CNTS_COMMON)
22 #define PROF_ORDERFILE_START INSTR_PROF_SECT_START(INSTR_PROF_ORDERFILE_COMMON)
23 #define PROF_VNODES_START INSTR_PROF_SECT_START(INSTR_PROF_VNODES_COMMON)
24 #define PROF_VNODES_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_VNODES_COMMON)
25 
26 /* Declare section start and stop symbols for various sections
27  * generated by compiler instrumentation.
28  */
29 extern __llvm_profile_data PROF_DATA_START COMPILER_RT_VISIBILITY
30     COMPILER_RT_WEAK;
31 extern __llvm_profile_data PROF_DATA_STOP COMPILER_RT_VISIBILITY
32     COMPILER_RT_WEAK;
33 extern uint64_t PROF_CNTS_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
34 extern uint64_t PROF_CNTS_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
35 extern uint32_t PROF_ORDERFILE_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
36 extern char PROF_NAME_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
37 extern char PROF_NAME_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
38 extern ValueProfNode PROF_VNODES_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
39 extern ValueProfNode PROF_VNODES_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK;
40 
41 COMPILER_RT_VISIBILITY const __llvm_profile_data *
42 __llvm_profile_begin_data(void) {
43   return &PROF_DATA_START;
44 }
45 COMPILER_RT_VISIBILITY const __llvm_profile_data *
46 __llvm_profile_end_data(void) {
47   return &PROF_DATA_STOP;
48 }
49 COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) {
50   return &PROF_NAME_START;
51 }
52 COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) {
53   return &PROF_NAME_STOP;
54 }
55 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) {
56   return &PROF_CNTS_START;
57 }
58 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) {
59   return &PROF_CNTS_STOP;
60 }
61 COMPILER_RT_VISIBILITY uint32_t *__llvm_profile_begin_orderfile(void) {
62   return &PROF_ORDERFILE_START;
63 }
64 
65 COMPILER_RT_VISIBILITY ValueProfNode *
66 __llvm_profile_begin_vnodes(void) {
67   return &PROF_VNODES_START;
68 }
69 COMPILER_RT_VISIBILITY ValueProfNode *__llvm_profile_end_vnodes(void) {
70   return &PROF_VNODES_STOP;
71 }
72 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START;
73 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP;
74 
75 #endif
76