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 !defined(__wasm__) && !defined(__HAIKU__) 13 14 #include <stdlib.h> 15 #include <stdio.h> 16 17 #include "InstrProfiling.h" 18 #include "InstrProfilingInternal.h" 19 20 static const __llvm_profile_data *DataFirst = NULL; 21 static const __llvm_profile_data *DataLast = NULL; 22 static const VTableProfData *VTableProfDataFirst = NULL; 23 static const VTableProfData *VTableProfDataLast = NULL; 24 static const char *NamesFirst = NULL; 25 static const char *NamesLast = NULL; 26 static const char *VNamesFirst = NULL; 27 static const char *VNamesLast = NULL; 28 static char *CountersFirst = NULL; 29 static char *CountersLast = NULL; 30 static uint32_t *OrderFileFirst = NULL; 31 32 static const void *getMinAddr(const void *A1, const void *A2) { 33 return A1 < A2 ? A1 : A2; 34 } 35 36 static const void *getMaxAddr(const void *A1, const void *A2) { 37 return A1 > A2 ? A1 : A2; 38 } 39 40 /*! 41 * \brief Register an instrumented function. 42 * 43 * Calls to this are emitted by clang with -fprofile-instr-generate. Such 44 * calls are only required (and only emitted) on targets where we haven't 45 * implemented linker magic to find the bounds of the sections. 46 */ 47 COMPILER_RT_VISIBILITY 48 void __llvm_profile_register_function(void *Data_) { 49 /* TODO: Only emit this function if we can't use linker magic. */ 50 const __llvm_profile_data *Data = (__llvm_profile_data *)Data_; 51 if (!DataFirst) { 52 DataFirst = Data; 53 DataLast = Data + 1; 54 CountersFirst = (char *)((uintptr_t)Data_ + Data->CounterPtr); 55 CountersLast = 56 CountersFirst + Data->NumCounters * __llvm_profile_counter_entry_size(); 57 return; 58 } 59 60 DataFirst = (const __llvm_profile_data *)getMinAddr(DataFirst, Data); 61 CountersFirst = (char *)getMinAddr( 62 CountersFirst, (char *)((uintptr_t)Data_ + Data->CounterPtr)); 63 64 DataLast = (const __llvm_profile_data *)getMaxAddr(DataLast, Data + 1); 65 CountersLast = (char *)getMaxAddr( 66 CountersLast, 67 (char *)((uintptr_t)Data_ + Data->CounterPtr) + 68 Data->NumCounters * __llvm_profile_counter_entry_size()); 69 } 70 71 COMPILER_RT_VISIBILITY 72 void __llvm_profile_register_names_function(void *NamesStart, 73 uint64_t NamesSize) { 74 if (!NamesFirst) { 75 NamesFirst = (const char *)NamesStart; 76 NamesLast = (const char *)NamesStart + NamesSize; 77 return; 78 } 79 NamesFirst = (const char *)getMinAddr(NamesFirst, NamesStart); 80 NamesLast = 81 (const char *)getMaxAddr(NamesLast, (const char *)NamesStart + NamesSize); 82 } 83 84 COMPILER_RT_VISIBILITY 85 const __llvm_profile_data *__llvm_profile_begin_data(void) { return DataFirst; } 86 COMPILER_RT_VISIBILITY 87 const __llvm_profile_data *__llvm_profile_end_data(void) { return DataLast; } 88 COMPILER_RT_VISIBILITY const VTableProfData * 89 __llvm_profile_begin_vtables(void) { 90 return VTableProfDataFirst; 91 } 92 COMPILER_RT_VISIBILITY const VTableProfData *__llvm_profile_end_vtables(void) { 93 return VTableProfDataLast; 94 } 95 COMPILER_RT_VISIBILITY 96 const char *__llvm_profile_begin_names(void) { return NamesFirst; } 97 COMPILER_RT_VISIBILITY 98 const char *__llvm_profile_end_names(void) { return NamesLast; } 99 COMPILER_RT_VISIBILITY 100 const char *__llvm_profile_begin_vtabnames(void) { return VNamesFirst; } 101 COMPILER_RT_VISIBILITY 102 const char *__llvm_profile_end_vtabnames(void) { return VNamesLast; } 103 COMPILER_RT_VISIBILITY 104 char *__llvm_profile_begin_counters(void) { return CountersFirst; } 105 COMPILER_RT_VISIBILITY 106 char *__llvm_profile_end_counters(void) { return CountersLast; } 107 COMPILER_RT_VISIBILITY 108 char *__llvm_profile_begin_bitmap(void) { return BitmapFirst; } 109 COMPILER_RT_VISIBILITY 110 char *__llvm_profile_end_bitmap(void) { return BitmapLast; } 111 /* TODO: correctly set up OrderFileFirst. */ 112 COMPILER_RT_VISIBILITY 113 uint32_t *__llvm_profile_begin_orderfile(void) { return OrderFileFirst; } 114 115 COMPILER_RT_VISIBILITY 116 ValueProfNode *__llvm_profile_begin_vnodes(void) { 117 return 0; 118 } 119 COMPILER_RT_VISIBILITY 120 ValueProfNode *__llvm_profile_end_vnodes(void) { return 0; } 121 122 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = 0; 123 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = 0; 124 125 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) { 126 return 0; 127 } 128 129 #endif 130