1 /*===- InstrProfilingPlatformOther.c - Profile data default 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(__APPLE__) && !defined(__linux__) && !defined(__FreeBSD__) && \ 10 !defined(__Fuchsia__) && !(defined(__sun__) && defined(__svr4__)) && \ 11 !defined(__NetBSD__) && !defined(_WIN32) && !defined(_AIX) 12 13 #include <stdlib.h> 14 #include <stdio.h> 15 16 #include "InstrProfiling.h" 17 #include "InstrProfilingInternal.h" 18 19 static const __llvm_profile_data *DataFirst = NULL; 20 static const __llvm_profile_data *DataLast = NULL; 21 static const VTableProfData *VTableProfDataFirst = NULL; 22 static const VTableProfData *VTableProfDataLast = NULL; 23 static const char *NamesFirst = NULL; 24 static const char *NamesLast = NULL; 25 static const char *VNamesFirst = NULL; 26 static const char *VNamesLast = NULL; 27 static char *CountersFirst = NULL; 28 static char *CountersLast = NULL; 29 static uint32_t *OrderFileFirst = NULL; 30 31 static const void *getMinAddr(const void *A1, const void *A2) { 32 return A1 < A2 ? A1 : A2; 33 } 34 35 static const void *getMaxAddr(const void *A1, const void *A2) { 36 return A1 > A2 ? A1 : A2; 37 } 38 39 /*! 40 * \brief Register an instrumented function. 41 * 42 * Calls to this are emitted by clang with -fprofile-instr-generate. Such 43 * calls are only required (and only emitted) on targets where we haven't 44 * implemented linker magic to find the bounds of the sections. 45 */ 46 COMPILER_RT_VISIBILITY 47 void __llvm_profile_register_function(void *Data_) { 48 /* TODO: Only emit this function if we can't use linker magic. */ 49 const __llvm_profile_data *Data = (__llvm_profile_data *)Data_; 50 if (!DataFirst) { 51 DataFirst = Data; 52 DataLast = Data + 1; 53 CountersFirst = (char *)((uintptr_t)Data_ + Data->CounterPtr); 54 CountersLast = 55 CountersFirst + Data->NumCounters * __llvm_profile_counter_entry_size(); 56 return; 57 } 58 59 DataFirst = (const __llvm_profile_data *)getMinAddr(DataFirst, Data); 60 CountersFirst = (char *)getMinAddr( 61 CountersFirst, (char *)((uintptr_t)Data_ + Data->CounterPtr)); 62 63 DataLast = (const __llvm_profile_data *)getMaxAddr(DataLast, Data + 1); 64 CountersLast = (char *)getMaxAddr( 65 CountersLast, 66 (char *)((uintptr_t)Data_ + Data->CounterPtr) + 67 Data->NumCounters * __llvm_profile_counter_entry_size()); 68 } 69 70 COMPILER_RT_VISIBILITY 71 void __llvm_profile_register_names_function(void *NamesStart, 72 uint64_t NamesSize) { 73 if (!NamesFirst) { 74 NamesFirst = (const char *)NamesStart; 75 NamesLast = (const char *)NamesStart + NamesSize; 76 return; 77 } 78 NamesFirst = (const char *)getMinAddr(NamesFirst, NamesStart); 79 NamesLast = 80 (const char *)getMaxAddr(NamesLast, (const char *)NamesStart + NamesSize); 81 } 82 83 COMPILER_RT_VISIBILITY 84 const __llvm_profile_data *__llvm_profile_begin_data(void) { return DataFirst; } 85 COMPILER_RT_VISIBILITY 86 const __llvm_profile_data *__llvm_profile_end_data(void) { return DataLast; } 87 COMPILER_RT_VISIBILITY const VTableProfData * 88 __llvm_profile_begin_vtables(void) { 89 return VTableProfDataFirst; 90 } 91 COMPILER_RT_VISIBILITY const VTableProfData *__llvm_profile_end_vtables(void) { 92 return VTableProfDataLast; 93 } 94 COMPILER_RT_VISIBILITY 95 const char *__llvm_profile_begin_names(void) { return NamesFirst; } 96 COMPILER_RT_VISIBILITY 97 const char *__llvm_profile_end_names(void) { return NamesLast; } 98 COMPILER_RT_VISIBILITY 99 const char *__llvm_profile_begin_vtabnames(void) { return VNamesFirst; } 100 COMPILER_RT_VISIBILITY 101 const char *__llvm_profile_end_vtabnames(void) { return VNamesLast; } 102 COMPILER_RT_VISIBILITY 103 char *__llvm_profile_begin_counters(void) { return CountersFirst; } 104 COMPILER_RT_VISIBILITY 105 char *__llvm_profile_end_counters(void) { return CountersLast; } 106 COMPILER_RT_VISIBILITY 107 char *__llvm_profile_begin_bitmap(void) { return BitmapFirst; } 108 COMPILER_RT_VISIBILITY 109 char *__llvm_profile_end_bitmap(void) { return BitmapLast; } 110 /* TODO: correctly set up OrderFileFirst. */ 111 COMPILER_RT_VISIBILITY 112 uint32_t *__llvm_profile_begin_orderfile(void) { return OrderFileFirst; } 113 114 COMPILER_RT_VISIBILITY 115 ValueProfNode *__llvm_profile_begin_vnodes(void) { 116 return 0; 117 } 118 COMPILER_RT_VISIBILITY 119 ValueProfNode *__llvm_profile_end_vnodes(void) { return 0; } 120 121 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = 0; 122 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = 0; 123 124 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) { 125 return 0; 126 } 127 128 #endif 129