1 /*===- InstrProfilingPlatformDarwin.c - Profile data on Darwin ------------===*\ 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 // Note: This is linked into the Darwin kernel, and must remain compatible 10 // with freestanding compilation. See `darwin_add_builtin_libraries`. 11 12 #include "InstrProfiling.h" 13 #include "InstrProfilingInternal.h" 14 15 #if defined(__APPLE__) 16 /* Use linker magic to find the bounds of the Data section. */ 17 COMPILER_RT_VISIBILITY 18 extern __llvm_profile_data 19 DataStart __asm("section$start$__DATA$" INSTR_PROF_DATA_SECT_NAME); 20 COMPILER_RT_VISIBILITY 21 extern __llvm_profile_data 22 DataEnd __asm("section$end$__DATA$" INSTR_PROF_DATA_SECT_NAME); 23 COMPILER_RT_VISIBILITY 24 extern char 25 NamesStart __asm("section$start$__DATA$" INSTR_PROF_NAME_SECT_NAME); 26 COMPILER_RT_VISIBILITY 27 extern char NamesEnd __asm("section$end$__DATA$" INSTR_PROF_NAME_SECT_NAME); 28 COMPILER_RT_VISIBILITY 29 extern char 30 CountersStart __asm("section$start$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 31 COMPILER_RT_VISIBILITY 32 extern char CountersEnd __asm("section$end$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 33 COMPILER_RT_VISIBILITY 34 extern char 35 BitmapStart __asm("section$start$__DATA$" INSTR_PROF_BITS_SECT_NAME); 36 COMPILER_RT_VISIBILITY 37 extern char BitmapEnd __asm("section$end$__DATA$" INSTR_PROF_BITS_SECT_NAME); 38 COMPILER_RT_VISIBILITY 39 extern VTableProfData 40 VTableProfStart __asm("section$start$__DATA$" INSTR_PROF_VTAB_SECT_NAME); 41 COMPILER_RT_VISIBILITY 42 extern VTableProfData 43 VTableProfEnd __asm("section$end$__DATA$" INSTR_PROF_VTAB_SECT_NAME); 44 COMPILER_RT_VISIBILITY 45 extern char 46 VNameStart __asm("section$start$__DATA$" INSTR_PROF_VNAME_SECT_NAME); 47 COMPILER_RT_VISIBILITY 48 extern char VNameEnd __asm("section$end$__DATA$" INSTR_PROF_VNAME_SECT_NAME); 49 COMPILER_RT_VISIBILITY 50 extern uint32_t 51 OrderFileStart __asm("section$start$__DATA$" INSTR_PROF_ORDERFILE_SECT_NAME); 52 53 COMPILER_RT_VISIBILITY 54 extern ValueProfNode 55 VNodesStart __asm("section$start$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 56 COMPILER_RT_VISIBILITY 57 extern ValueProfNode 58 VNodesEnd __asm("section$end$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 59 60 COMPILER_RT_VISIBILITY 61 const __llvm_profile_data *__llvm_profile_begin_data(void) { 62 return &DataStart; 63 } 64 COMPILER_RT_VISIBILITY 65 const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; } 66 COMPILER_RT_VISIBILITY 67 const char *__llvm_profile_begin_names(void) { return &NamesStart; } 68 COMPILER_RT_VISIBILITY 69 const char *__llvm_profile_end_names(void) { return &NamesEnd; } 70 COMPILER_RT_VISIBILITY 71 char *__llvm_profile_begin_counters(void) { return &CountersStart; } 72 COMPILER_RT_VISIBILITY 73 char *__llvm_profile_end_counters(void) { return &CountersEnd; } 74 COMPILER_RT_VISIBILITY 75 char *__llvm_profile_begin_bitmap(void) { return &BitmapStart; } 76 COMPILER_RT_VISIBILITY 77 char *__llvm_profile_end_bitmap(void) { return &BitmapEnd; } 78 COMPILER_RT_VISIBILITY 79 const VTableProfData *__llvm_profile_begin_vtables(void) { 80 return &VTableProfStart; 81 } 82 COMPILER_RT_VISIBILITY 83 const VTableProfData *__llvm_profile_end_vtables(void) { 84 return &VTableProfEnd; 85 } 86 COMPILER_RT_VISIBILITY 87 const char *__llvm_profile_begin_vtabnames(void) { return &VNameStart; } 88 COMPILER_RT_VISIBILITY 89 const char *__llvm_profile_end_vtabnames(void) { return &VNameEnd; } 90 COMPILER_RT_VISIBILITY 91 uint32_t *__llvm_profile_begin_orderfile(void) { return &OrderFileStart; } 92 93 COMPILER_RT_VISIBILITY 94 ValueProfNode *__llvm_profile_begin_vnodes(void) { 95 return &VNodesStart; 96 } 97 COMPILER_RT_VISIBILITY 98 ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; } 99 100 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &VNodesStart; 101 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &VNodesEnd; 102 103 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) { 104 return 0; 105 } 106 107 #endif 108