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. Add used attribute so 40 * that they are linker GC roots on supported ELF platforms. 41 */ 42 __llvm_profile_data __prof_data_sect_data[0] COMPILER_RT_SECTION( 43 INSTR_PROF_DATA_SECT_NAME) COMPILER_RT_USED; 44 uint64_t __prof_cnts_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_CNTS_SECT_NAME) 45 COMPILER_RT_USED; 46 uint32_t __prof_orderfile_sect_data[0] COMPILER_RT_SECTION( 47 INSTR_PROF_ORDERFILE_SECT_NAME) COMPILER_RT_USED; 48 const char __prof_nms_sect_data[0] COMPILER_RT_SECTION( 49 INSTR_PROF_NAME_SECT_NAME) COMPILER_RT_USED; 50 ValueProfNode __prof_vnodes_sect_data[0] COMPILER_RT_SECTION( 51 INSTR_PROF_VNODES_SECT_NAME) COMPILER_RT_USED; 52 53 COMPILER_RT_VISIBILITY const __llvm_profile_data * 54 __llvm_profile_begin_data(void) { 55 return &PROF_DATA_START; 56 } 57 COMPILER_RT_VISIBILITY const __llvm_profile_data * 58 __llvm_profile_end_data(void) { 59 return &PROF_DATA_STOP; 60 } 61 COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { 62 return &PROF_NAME_START; 63 } 64 COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { 65 return &PROF_NAME_STOP; 66 } 67 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { 68 return &PROF_CNTS_START; 69 } 70 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { 71 return &PROF_CNTS_STOP; 72 } 73 COMPILER_RT_VISIBILITY uint32_t *__llvm_profile_begin_orderfile(void) { 74 return &PROF_ORDERFILE_START; 75 } 76 77 COMPILER_RT_VISIBILITY ValueProfNode * 78 __llvm_profile_begin_vnodes(void) { 79 return &PROF_VNODES_START; 80 } 81 COMPILER_RT_VISIBILITY ValueProfNode *__llvm_profile_end_vnodes(void) { 82 return &PROF_VNODES_STOP; 83 } 84 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START; 85 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP; 86 87 #endif 88