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 uint32_t 40 OrderFileStart __asm("section$start$__DATA$" INSTR_PROF_ORDERFILE_SECT_NAME); 41 42 COMPILER_RT_VISIBILITY 43 extern ValueProfNode 44 VNodesStart __asm("section$start$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 45 COMPILER_RT_VISIBILITY 46 extern ValueProfNode 47 VNodesEnd __asm("section$end$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 48 49 COMPILER_RT_VISIBILITY 50 const __llvm_profile_data *__llvm_profile_begin_data(void) { 51 return &DataStart; 52 } 53 COMPILER_RT_VISIBILITY 54 const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; } 55 COMPILER_RT_VISIBILITY 56 const char *__llvm_profile_begin_names(void) { return &NamesStart; } 57 COMPILER_RT_VISIBILITY 58 const char *__llvm_profile_end_names(void) { return &NamesEnd; } 59 COMPILER_RT_VISIBILITY 60 char *__llvm_profile_begin_counters(void) { return &CountersStart; } 61 COMPILER_RT_VISIBILITY 62 char *__llvm_profile_end_counters(void) { return &CountersEnd; } 63 COMPILER_RT_VISIBILITY 64 char *__llvm_profile_begin_bitmap(void) { return &BitmapStart; } 65 COMPILER_RT_VISIBILITY 66 char *__llvm_profile_end_bitmap(void) { return &BitmapEnd; } 67 COMPILER_RT_VISIBILITY 68 uint32_t *__llvm_profile_begin_orderfile(void) { return &OrderFileStart; } 69 70 COMPILER_RT_VISIBILITY 71 ValueProfNode *__llvm_profile_begin_vnodes(void) { 72 return &VNodesStart; 73 } 74 COMPILER_RT_VISIBILITY 75 ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; } 76 77 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &VNodesStart; 78 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &VNodesEnd; 79 80 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) { 81 return 0; 82 } 83 84 #endif 85