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(__sun__) && defined(__svr4__)) && !defined(__NetBSD__) && \
11 !defined(_WIN32)
12
13 #include <stdlib.h>
14 #include <stdio.h>
15
16 #include "InstrProfiling.h"
17 #include "InstrProfilingInternal.h"
18
19 static const __llvm_profile_data *DataFirst = NULL;
20 static const __llvm_profile_data *DataLast = NULL;
21 static const char *NamesFirst = NULL;
22 static const char *NamesLast = NULL;
23 static uint64_t *CountersFirst = NULL;
24 static uint64_t *CountersLast = NULL;
25 static uint32_t *OrderFileFirst = NULL;
26
getMinAddr(const void * A1,const void * A2)27 static const void *getMinAddr(const void *A1, const void *A2) {
28 return A1 < A2 ? A1 : A2;
29 }
30
getMaxAddr(const void * A1,const void * A2)31 static const void *getMaxAddr(const void *A1, const void *A2) {
32 return A1 > A2 ? A1 : A2;
33 }
34
35 /*!
36 * \brief Register an instrumented function.
37 *
38 * Calls to this are emitted by clang with -fprofile-instr-generate. Such
39 * calls are only required (and only emitted) on targets where we haven't
40 * implemented linker magic to find the bounds of the sections.
41 */
42 COMPILER_RT_VISIBILITY
__llvm_profile_register_function(void * Data_)43 void __llvm_profile_register_function(void *Data_) {
44 /* TODO: Only emit this function if we can't use linker magic. */
45 const __llvm_profile_data *Data = (__llvm_profile_data *)Data_;
46 if (!DataFirst) {
47 DataFirst = Data;
48 DataLast = Data + 1;
49 CountersFirst = Data->CounterPtr;
50 CountersLast = (uint64_t *)Data->CounterPtr + Data->NumCounters;
51 return;
52 }
53
54 DataFirst = (const __llvm_profile_data *)getMinAddr(DataFirst, Data);
55 CountersFirst = (uint64_t *)getMinAddr(CountersFirst, Data->CounterPtr);
56
57 DataLast = (const __llvm_profile_data *)getMaxAddr(DataLast, Data + 1);
58 CountersLast = (uint64_t *)getMaxAddr(
59 CountersLast, (uint64_t *)Data->CounterPtr + Data->NumCounters);
60 }
61
62 COMPILER_RT_VISIBILITY
__llvm_profile_register_names_function(void * NamesStart,uint64_t NamesSize)63 void __llvm_profile_register_names_function(void *NamesStart,
64 uint64_t NamesSize) {
65 if (!NamesFirst) {
66 NamesFirst = (const char *)NamesStart;
67 NamesLast = (const char *)NamesStart + NamesSize;
68 return;
69 }
70 NamesFirst = (const char *)getMinAddr(NamesFirst, NamesStart);
71 NamesLast =
72 (const char *)getMaxAddr(NamesLast, (const char *)NamesStart + NamesSize);
73 }
74
75 COMPILER_RT_VISIBILITY
__llvm_profile_begin_data(void)76 const __llvm_profile_data *__llvm_profile_begin_data(void) { return DataFirst; }
77 COMPILER_RT_VISIBILITY
__llvm_profile_end_data(void)78 const __llvm_profile_data *__llvm_profile_end_data(void) { return DataLast; }
79 COMPILER_RT_VISIBILITY
__llvm_profile_begin_names(void)80 const char *__llvm_profile_begin_names(void) { return NamesFirst; }
81 COMPILER_RT_VISIBILITY
__llvm_profile_end_names(void)82 const char *__llvm_profile_end_names(void) { return NamesLast; }
83 COMPILER_RT_VISIBILITY
__llvm_profile_begin_counters(void)84 uint64_t *__llvm_profile_begin_counters(void) { return CountersFirst; }
85 COMPILER_RT_VISIBILITY
__llvm_profile_end_counters(void)86 uint64_t *__llvm_profile_end_counters(void) { return CountersLast; }
87 /* TODO: correctly set up OrderFileFirst. */
88 COMPILER_RT_VISIBILITY
__llvm_profile_begin_orderfile(void)89 uint32_t *__llvm_profile_begin_orderfile(void) { return OrderFileFirst; }
90
91 COMPILER_RT_VISIBILITY
__llvm_profile_begin_vnodes(void)92 ValueProfNode *__llvm_profile_begin_vnodes(void) {
93 return 0;
94 }
95 COMPILER_RT_VISIBILITY
__llvm_profile_end_vnodes(void)96 ValueProfNode *__llvm_profile_end_vnodes(void) { return 0; }
97
98 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = 0;
99 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = 0;
100
__llvm_write_binary_ids(ProfDataWriter * Writer)101 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) {
102 return 0;
103 }
104
105 #endif
106