1 /*===- InstrProfilingPlatformLinux.c - Profile data Linux platform ------===*\ 2 |* 3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 |* See https://llvm.org/LICENSE.txt for license information. 5 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 |* 7 \*===----------------------------------------------------------------------===*/ 8 9 #if defined(__linux__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \ 10 (defined(__sun__) && defined(__svr4__)) || defined(__NetBSD__) 11 12 #include <stdlib.h> 13 14 #include "InstrProfiling.h" 15 16 #define PROF_DATA_START INSTR_PROF_SECT_START(INSTR_PROF_DATA_COMMON) 17 #define PROF_DATA_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_DATA_COMMON) 18 #define PROF_NAME_START INSTR_PROF_SECT_START(INSTR_PROF_NAME_COMMON) 19 #define PROF_NAME_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_NAME_COMMON) 20 #define PROF_CNTS_START INSTR_PROF_SECT_START(INSTR_PROF_CNTS_COMMON) 21 #define PROF_CNTS_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_CNTS_COMMON) 22 #define PROF_ORDERFILE_START INSTR_PROF_SECT_START(INSTR_PROF_ORDERFILE_COMMON) 23 #define PROF_VNODES_START INSTR_PROF_SECT_START(INSTR_PROF_VNODES_COMMON) 24 #define PROF_VNODES_STOP INSTR_PROF_SECT_STOP(INSTR_PROF_VNODES_COMMON) 25 26 /* Declare section start and stop symbols for various sections 27 * generated by compiler instrumentation. 28 */ 29 extern __llvm_profile_data PROF_DATA_START COMPILER_RT_VISIBILITY; 30 extern __llvm_profile_data PROF_DATA_STOP COMPILER_RT_VISIBILITY; 31 extern uint64_t PROF_CNTS_START COMPILER_RT_VISIBILITY; 32 extern uint64_t PROF_CNTS_STOP COMPILER_RT_VISIBILITY; 33 extern uint32_t PROF_ORDERFILE_START COMPILER_RT_VISIBILITY; 34 extern char PROF_NAME_START COMPILER_RT_VISIBILITY; 35 extern char PROF_NAME_STOP COMPILER_RT_VISIBILITY; 36 extern ValueProfNode PROF_VNODES_START COMPILER_RT_VISIBILITY; 37 extern ValueProfNode PROF_VNODES_STOP COMPILER_RT_VISIBILITY; 38 39 /* Add dummy data to ensure the section is always created. */ 40 __llvm_profile_data 41 __prof_data_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_DATA_SECT_NAME); 42 uint64_t 43 __prof_cnts_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_CNTS_SECT_NAME); 44 uint32_t 45 __prof_orderfile_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_ORDERFILE_SECT_NAME); 46 const char __prof_nms_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_NAME_SECT_NAME); 47 ValueProfNode __prof_vnodes_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_VNODES_SECT_NAME); 48 49 COMPILER_RT_VISIBILITY const __llvm_profile_data * 50 __llvm_profile_begin_data(void) { 51 return &PROF_DATA_START; 52 } 53 COMPILER_RT_VISIBILITY const __llvm_profile_data * 54 __llvm_profile_end_data(void) { 55 return &PROF_DATA_STOP; 56 } 57 COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { 58 return &PROF_NAME_START; 59 } 60 COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { 61 return &PROF_NAME_STOP; 62 } 63 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { 64 return &PROF_CNTS_START; 65 } 66 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { 67 return &PROF_CNTS_STOP; 68 } 69 COMPILER_RT_VISIBILITY uint32_t *__llvm_profile_begin_orderfile(void) { 70 return &PROF_ORDERFILE_START; 71 } 72 73 COMPILER_RT_VISIBILITY ValueProfNode * 74 __llvm_profile_begin_vnodes(void) { 75 return &PROF_VNODES_START; 76 } 77 COMPILER_RT_VISIBILITY ValueProfNode *__llvm_profile_end_vnodes(void) { 78 return &PROF_VNODES_STOP; 79 } 80 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START; 81 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP; 82 83 #endif 84