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 uint64_t 30 CountersStart __asm("section$start$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 31 COMPILER_RT_VISIBILITY 32 extern uint64_t 33 CountersEnd __asm("section$end$__DATA$" INSTR_PROF_CNTS_SECT_NAME); 34 COMPILER_RT_VISIBILITY 35 extern uint32_t 36 OrderFileStart __asm("section$start$__DATA$" INSTR_PROF_ORDERFILE_SECT_NAME); 37 38 COMPILER_RT_VISIBILITY 39 extern ValueProfNode 40 VNodesStart __asm("section$start$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 41 COMPILER_RT_VISIBILITY 42 extern ValueProfNode 43 VNodesEnd __asm("section$end$__DATA$" INSTR_PROF_VNODES_SECT_NAME); 44 45 COMPILER_RT_VISIBILITY __llvm_profile_begin_data(void)46const __llvm_profile_data *__llvm_profile_begin_data(void) { 47 return &DataStart; 48 } 49 COMPILER_RT_VISIBILITY __llvm_profile_end_data(void)50const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; } 51 COMPILER_RT_VISIBILITY __llvm_profile_begin_names(void)52const char *__llvm_profile_begin_names(void) { return &NamesStart; } 53 COMPILER_RT_VISIBILITY __llvm_profile_end_names(void)54const char *__llvm_profile_end_names(void) { return &NamesEnd; } 55 COMPILER_RT_VISIBILITY __llvm_profile_begin_counters(void)56uint64_t *__llvm_profile_begin_counters(void) { return &CountersStart; } 57 COMPILER_RT_VISIBILITY __llvm_profile_end_counters(void)58uint64_t *__llvm_profile_end_counters(void) { return &CountersEnd; } 59 COMPILER_RT_VISIBILITY __llvm_profile_begin_orderfile(void)60uint32_t *__llvm_profile_begin_orderfile(void) { return &OrderFileStart; } 61 62 COMPILER_RT_VISIBILITY __llvm_profile_begin_vnodes(void)63ValueProfNode *__llvm_profile_begin_vnodes(void) { 64 return &VNodesStart; 65 } 66 COMPILER_RT_VISIBILITY __llvm_profile_end_vnodes(void)67ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; } 68 69 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &VNodesStart; 70 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &VNodesEnd; 71 __llvm_write_binary_ids(ProfDataWriter * Writer)72COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) { 73 return 0; 74 } 75 76 #endif 77