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 14 #if defined(__APPLE__) 15 /* Use linker magic to find the bounds of the Data section. */ 16 COMPILER_RT_VISIBILITY 17 extern __llvm_profile_data 18 DataStart __asm("section$start$__DATA$" INSTR_PROF_DATA_SECT_NAME); 19 COMPILER_RT_VISIBILITY 20 extern __llvm_profile_data 21 DataEnd __asm("section$end$__DATA$" INSTR_PROF_DATA_SECT_NAME); 22 COMPILER_RT_VISIBILITY 23 extern char 24 NamesStart __asm("section$start$__DATA$" INSTR_PROF_NAME_SECT_NAME); 25 COMPILER_RT_VISIBILITY 26 extern char NamesEnd __asm("section$end$__DATA$" INSTR_PROF_NAME_SECT_NAME); 27 COMPILER_RT_VISIBILITY 28 extern uint64_t 29 CountersStart __asm("section$start$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 30 COMPILER_RT_VISIBILITY 31 extern uint64_t 32 CountersEnd __asm("section$end$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 33 COMPILER_RT_VISIBILITY 34 extern uint32_t 35 OrderFileStart __asm("section$start$__DATA$" INSTR_PROF_ORDERFILE_SECT_NAME); 36 37 COMPILER_RT_VISIBILITY 38 extern ValueProfNode 39 VNodesStart __asm("section$start$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 40 COMPILER_RT_VISIBILITY 41 extern ValueProfNode 42 VNodesEnd __asm("section$end$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 43 44 COMPILER_RT_VISIBILITY 45 const __llvm_profile_data *__llvm_profile_begin_data(void) { 46 return &DataStart; 47 } 48 COMPILER_RT_VISIBILITY 49 const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; } 50 COMPILER_RT_VISIBILITY 51 const char *__llvm_profile_begin_names(void) { return &NamesStart; } 52 COMPILER_RT_VISIBILITY 53 const char *__llvm_profile_end_names(void) { return &NamesEnd; } 54 COMPILER_RT_VISIBILITY 55 uint64_t *__llvm_profile_begin_counters(void) { return &CountersStart; } 56 COMPILER_RT_VISIBILITY 57 uint64_t *__llvm_profile_end_counters(void) { return &CountersEnd; } 58 COMPILER_RT_VISIBILITY 59 uint32_t *__llvm_profile_begin_orderfile(void) { return &OrderFileStart; } 60 61 COMPILER_RT_VISIBILITY 62 ValueProfNode *__llvm_profile_begin_vnodes(void) { 63 return &VNodesStart; 64 } 65 COMPILER_RT_VISIBILITY 66 ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; } 67 68 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &VNodesStart; 69 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &VNodesEnd; 70 #endif 71