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 COMPILER_RT_WEAK; 31 extern __llvm_profile_data PROF_DATA_STOP COMPILER_RT_VISIBILITY 32 COMPILER_RT_WEAK; 33 extern uint64_t PROF_CNTS_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 34 extern uint64_t PROF_CNTS_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 35 extern uint32_t PROF_ORDERFILE_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 36 extern char PROF_NAME_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 37 extern char PROF_NAME_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 38 extern ValueProfNode PROF_VNODES_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 39 extern ValueProfNode PROF_VNODES_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 40 41 /* Add dummy data to ensure the section is always created. Add used attribute so 42 * that they are linker GC roots on supported ELF platforms. 43 */ 44 __llvm_profile_data __prof_data_sect_data[0] COMPILER_RT_SECTION( 45 INSTR_PROF_DATA_SECT_NAME) COMPILER_RT_USED; 46 uint64_t __prof_cnts_sect_data[0] COMPILER_RT_SECTION(INSTR_PROF_CNTS_SECT_NAME) 47 COMPILER_RT_USED; 48 uint32_t __prof_orderfile_sect_data[0] COMPILER_RT_SECTION( 49 INSTR_PROF_ORDERFILE_SECT_NAME) COMPILER_RT_USED; 50 const char __prof_nms_sect_data[0] COMPILER_RT_SECTION( 51 INSTR_PROF_NAME_SECT_NAME) COMPILER_RT_USED; 52 ValueProfNode __prof_vnodes_sect_data[0] COMPILER_RT_SECTION( 53 INSTR_PROF_VNODES_SECT_NAME) COMPILER_RT_USED; 54 55 COMPILER_RT_VISIBILITY const __llvm_profile_data * 56 __llvm_profile_begin_data(void) { 57 return &PROF_DATA_START; 58 } 59 COMPILER_RT_VISIBILITY const __llvm_profile_data * 60 __llvm_profile_end_data(void) { 61 return &PROF_DATA_STOP; 62 } 63 COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { 64 return &PROF_NAME_START; 65 } 66 COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { 67 return &PROF_NAME_STOP; 68 } 69 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { 70 return &PROF_CNTS_START; 71 } 72 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { 73 return &PROF_CNTS_STOP; 74 } 75 COMPILER_RT_VISIBILITY uint32_t *__llvm_profile_begin_orderfile(void) { 76 return &PROF_ORDERFILE_START; 77 } 78 79 COMPILER_RT_VISIBILITY ValueProfNode * 80 __llvm_profile_begin_vnodes(void) { 81 return &PROF_VNODES_START; 82 } 83 COMPILER_RT_VISIBILITY ValueProfNode *__llvm_profile_end_vnodes(void) { 84 return &PROF_VNODES_STOP; 85 } 86 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START; 87 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP; 88 89 #endif 90