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 * __llvm_profile_begin_data(void)40__llvm_profile_begin_data(void) { 41 return &PROF_DATA_START; 42 } 43 COMPILER_RT_VISIBILITY const __llvm_profile_data * __llvm_profile_end_data(void)44__llvm_profile_end_data(void) { 45 return &PROF_DATA_STOP; 46 } __llvm_profile_begin_names(void)47COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { 48 return &PROF_NAME_START; 49 } __llvm_profile_end_names(void)50COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { 51 return &PROF_NAME_STOP; 52 } __llvm_profile_begin_counters(void)53COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { 54 return &PROF_CNTS_START; 55 } __llvm_profile_end_counters(void)56COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { 57 return &PROF_CNTS_STOP; 58 } 59 #endif 60