InstrProfilingPlatformDarwin.c revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1/*===- InstrProfilingPlatformDarwin.c - Profile data on Darwin ------------===*\
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(__APPLE__)
13/* Use linker magic to find the bounds of the Data section. */
14__attribute__((visibility("hidden")))
15extern __llvm_profile_data DataStart __asm("section$start$__DATA$__llvm_prf_data");
16__attribute__((visibility("hidden")))
17extern __llvm_profile_data DataEnd   __asm("section$end$__DATA$__llvm_prf_data");
18__attribute__((visibility("hidden")))
19extern char NamesStart __asm("section$start$__DATA$__llvm_prf_names");
20__attribute__((visibility("hidden")))
21extern char NamesEnd   __asm("section$end$__DATA$__llvm_prf_names");
22__attribute__((visibility("hidden")))
23extern uint64_t CountersStart __asm("section$start$__DATA$__llvm_prf_cnts");
24__attribute__((visibility("hidden")))
25extern uint64_t CountersEnd   __asm("section$end$__DATA$__llvm_prf_cnts");
26
27__attribute__((visibility("hidden")))
28const __llvm_profile_data *__llvm_profile_data_begin(void) {
29  return &DataStart;
30}
31__attribute__((visibility("hidden")))
32const __llvm_profile_data *__llvm_profile_data_end(void) {
33  return &DataEnd;
34}
35__attribute__((visibility("hidden")))
36const char *__llvm_profile_names_begin(void) { return &NamesStart; }
37__attribute__((visibility("hidden")))
38const char *__llvm_profile_names_end(void) { return &NamesEnd; }
39__attribute__((visibility("hidden")))
40uint64_t *__llvm_profile_counters_begin(void) { return &CountersStart; }
41__attribute__((visibility("hidden")))
42uint64_t *__llvm_profile_counters_end(void) { return &CountersEnd; }
43#endif
44