Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 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 | #define PROF_DATA_START INSTR_PROF_SECT_START(INSTR_PROF_DATA_SECT_NAME) |
| 16 | #define PROF_DATA_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_DATA_SECT_NAME) |
| 17 | #define PROF_NAME_START INSTR_PROF_SECT_START(INSTR_PROF_NAME_SECT_NAME) |
| 18 | #define PROF_NAME_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_NAME_SECT_NAME) |
| 19 | #define PROF_CNTS_START INSTR_PROF_SECT_START(INSTR_PROF_CNTS_SECT_NAME) |
| 20 | #define PROF_CNTS_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_CNTS_SECT_NAME) |
| 21 | |
| 22 | /* Declare section start and stop symbols for various sections |
| 23 | * generated by compiler instrumentation. |
| 24 | */ |
| 25 | extern __llvm_profile_data PROF_DATA_START COMPILER_RT_VISIBILITY; |
| 26 | extern __llvm_profile_data PROF_DATA_STOP COMPILER_RT_VISIBILITY; |
| 27 | extern uint64_t PROF_CNTS_START COMPILER_RT_VISIBILITY; |
| 28 | extern uint64_t PROF_CNTS_STOP COMPILER_RT_VISIBILITY; |
| 29 | extern char PROF_NAME_START COMPILER_RT_VISIBILITY; |
| 30 | extern char PROF_NAME_STOP COMPILER_RT_VISIBILITY; |
| 31 | |
| 32 | /* Add dummy data to ensure the section is always created. */ |
| 33 | __llvm_profile_data |
| 34 | __prof_data_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_DATA_SECT_NAME_STR); |
| 35 | uint64_t |
| 36 | __prof_cnts_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_CNTS_SECT_NAME_STR); |
| 37 | char __prof_nms_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_NAME_SECT_NAME_STR); |
| 38 | |
| 39 | COMPILER_RT_VISIBILITY const __llvm_profile_data * |
| 40 | __llvm_profile_begin_data(void) { |
| 41 | return &PROF_DATA_START; |
| 42 | } |
| 43 | COMPILER_RT_VISIBILITY const __llvm_profile_data * |
| 44 | __llvm_profile_end_data(void) { |
| 45 | return &PROF_DATA_STOP; |
| 46 | } |
| 47 | COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { |
| 48 | return &PROF_NAME_START; |
| 49 | } |
| 50 | COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { |
| 51 | return &PROF_NAME_STOP; |
| 52 | } |
| 53 | COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { |
| 54 | return &PROF_CNTS_START; |
| 55 | } |
| 56 | COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { |
| 57 | return &PROF_CNTS_STOP; |
| 58 | } |
| 59 | #endif |