1 /*===- InstrProfilingPlatformLinux.c - Profile data Linux platform ------===*\
2 |*
3 |*                     The LLVM Compiler Infrastructure
4 |*
5 |* This file is distributed under the University of Illinois Open Source
6 |* License. See LICENSE.TXT for details.
7 |*
8 \*===----------------------------------------------------------------------===*/
9 
10 #include "InstrProfiling.h"
11 
12 #if defined(__linux__) || defined(__FreeBSD__)
13 #include <stdlib.h>
14 
15 extern __llvm_profile_data __start___llvm_prf_data
16     __attribute__((visibility("hidden")));
17 extern __llvm_profile_data __stop___llvm_prf_data
18     __attribute__((visibility("hidden")));
19 extern uint64_t __start___llvm_prf_cnts __attribute__((visibility("hidden")));
20 extern uint64_t __stop___llvm_prf_cnts __attribute__((visibility("hidden")));
21 extern char __start___llvm_prf_names __attribute__((visibility("hidden")));
22 extern char __stop___llvm_prf_names __attribute__((visibility("hidden")));
23 
24 /* Add dummy data to ensure the section is always created. */
25 __llvm_profile_data __llvm_prof_sect_data[0]
26     __attribute__((section("__llvm_prf_data")));
27 uint64_t __llvm_prof_cnts_sect_data[0]
28     __attribute__((section("__llvm_prf_cnts")));
29 char __llvm_prof_nms_sect_data[0] __attribute__((section("__llvm_prf_names")));
30 
31 __attribute__((visibility("hidden"))) const __llvm_profile_data *
32 __llvm_profile_begin_data(void) {
33   return &__start___llvm_prf_data;
34 }
35 __attribute__((visibility("hidden"))) const __llvm_profile_data *
36 __llvm_profile_end_data(void) {
37   return &__stop___llvm_prf_data;
38 }
39 __attribute__((visibility("hidden"))) const char *__llvm_profile_begin_names(
40     void) {
41   return &__start___llvm_prf_names;
42 }
43 __attribute__((visibility("hidden"))) const char *__llvm_profile_end_names(
44     void) {
45   return &__stop___llvm_prf_names;
46 }
47 __attribute__((visibility("hidden"))) uint64_t *__llvm_profile_begin_counters(
48     void) {
49   return &__start___llvm_prf_cnts;
50 }
51 __attribute__((visibility("hidden"))) uint64_t *__llvm_profile_end_counters(
52     void) {
53   return &__stop___llvm_prf_cnts;
54 }
55 #endif
56