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