InstrProfilingPlatformDarwin.c revision 296417 
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. */
14COMPILER_RT_VISIBILITY
15extern __llvm_profile_data
16    DataStart __asm("section$start$__DATA$" INSTR_PROF_DATA_SECT_NAME_STR);
17COMPILER_RT_VISIBILITY
18extern __llvm_profile_data
19    DataEnd __asm("section$end$__DATA$" INSTR_PROF_DATA_SECT_NAME_STR);
20COMPILER_RT_VISIBILITY
21extern char
22    NamesStart __asm("section$start$__DATA$" INSTR_PROF_NAME_SECT_NAME_STR);
23COMPILER_RT_VISIBILITY
24extern char NamesEnd __asm("section$end$__DATA$" INSTR_PROF_NAME_SECT_NAME_STR);
25COMPILER_RT_VISIBILITY
26extern uint64_t
27    CountersStart __asm("section$start$__DATA$" INSTR_PROF_CNTS_SECT_NAME_STR);
28COMPILER_RT_VISIBILITY
29extern uint64_t
30    CountersEnd __asm("section$end$__DATA$" INSTR_PROF_CNTS_SECT_NAME_STR);
31
32COMPILER_RT_VISIBILITY
33const __llvm_profile_data *__llvm_profile_begin_data(void) {
34  return &DataStart;
35}
36COMPILER_RT_VISIBILITY
37const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; }
38COMPILER_RT_VISIBILITY
39const char *__llvm_profile_begin_names(void) { return &NamesStart; }
40COMPILER_RT_VISIBILITY
41const char *__llvm_profile_end_names(void) { return &NamesEnd; }
42COMPILER_RT_VISIBILITY
43uint64_t *__llvm_profile_begin_counters(void) { return &CountersStart; }
44COMPILER_RT_VISIBILITY
45uint64_t *__llvm_profile_end_counters(void) { return &CountersEnd; }
46#endif
47