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. These symbols are 28 * declared as weak, which means that they'll end up as NULL if 29 * those sections are empty, and any code that iterates over the 30 * content using __llvm_profile_begin_* and __llvm_profile_end_* 31 * functions defined below will be a no-op. 32 */ 33 extern __llvm_profile_data PROF_DATA_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 34 extern __llvm_profile_data PROF_DATA_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 35 extern uint64_t PROF_CNTS_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 36 extern uint64_t PROF_CNTS_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 37 extern uint32_t PROF_ORDERFILE_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 38 extern char PROF_NAME_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 39 extern char PROF_NAME_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 40 extern ValueProfNode PROF_VNODES_START COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 41 extern ValueProfNode PROF_VNODES_STOP COMPILER_RT_VISIBILITY COMPILER_RT_WEAK; 42 43 COMPILER_RT_VISIBILITY const __llvm_profile_data * 44 __llvm_profile_begin_data(void) { 45 return &PROF_DATA_START; 46 } 47 COMPILER_RT_VISIBILITY const __llvm_profile_data * 48 __llvm_profile_end_data(void) { 49 return &PROF_DATA_STOP; 50 } 51 COMPILER_RT_VISIBILITY const char *__llvm_profile_begin_names(void) { 52 return &PROF_NAME_START; 53 } 54 COMPILER_RT_VISIBILITY const char *__llvm_profile_end_names(void) { 55 return &PROF_NAME_STOP; 56 } 57 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_begin_counters(void) { 58 return &PROF_CNTS_START; 59 } 60 COMPILER_RT_VISIBILITY uint64_t *__llvm_profile_end_counters(void) { 61 return &PROF_CNTS_STOP; 62 } 63 COMPILER_RT_VISIBILITY uint32_t *__llvm_profile_begin_orderfile(void) { 64 return &PROF_ORDERFILE_START; 65 } 66 67 COMPILER_RT_VISIBILITY ValueProfNode * 68 __llvm_profile_begin_vnodes(void) { 69 return &PROF_VNODES_START; 70 } 71 COMPILER_RT_VISIBILITY ValueProfNode *__llvm_profile_end_vnodes(void) { 72 return &PROF_VNODES_STOP; 73 } 74 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START; 75 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP; 76 77 #endif 78