1/*===- InstrProfilingPlatformOther.c - Profile data default platform ------===*\
2|*
3|*                     The LLVM Compiler Infrastructure
4|*
5|* This file is distributed under the University of Illinois Open Source
6|* License. See LICENSE.TXT for details.
7|*
8\*===----------------------------------------------------------------------===*/
9
10#include "InstrProfiling.h"
11
12#if !defined(__APPLE__)
13#include <stdlib.h>
14
15static const __llvm_profile_data *DataFirst = NULL;
16static const __llvm_profile_data *DataLast = NULL;
17static const char *NamesFirst = NULL;
18static const char *NamesLast = NULL;
19static uint64_t *CountersFirst = NULL;
20static uint64_t *CountersLast = NULL;
21
22/*!
23 * \brief Register an instrumented function.
24 *
25 * Calls to this are emitted by clang with -fprofile-instr-generate.  Such
26 * calls are only required (and only emitted) on targets where we haven't
27 * implemented linker magic to find the bounds of the sections.
28 */
29__attribute__((visibility("hidden")))
30void __llvm_profile_register_function(void *Data_) {
31  /* TODO: Only emit this function if we can't use linker magic. */
32  const __llvm_profile_data *Data = (__llvm_profile_data*)Data_;
33  if (!DataFirst) {
34    DataFirst = Data;
35    DataLast = Data + 1;
36    NamesFirst = Data->Name;
37    NamesLast = Data->Name + Data->NameSize;
38    CountersFirst = Data->Counters;
39    CountersLast = Data->Counters + Data->NumCounters;
40    return;
41  }
42
43#define UPDATE_FIRST(First, New) \
44  First = New < First ? New : First
45  UPDATE_FIRST(DataFirst, Data);
46  UPDATE_FIRST(NamesFirst, Data->Name);
47  UPDATE_FIRST(CountersFirst, Data->Counters);
48#undef UPDATE_FIRST
49
50#define UPDATE_LAST(Last, New) \
51  Last = New > Last ? New : Last
52  UPDATE_LAST(DataLast, Data + 1);
53  UPDATE_LAST(NamesLast, Data->Name + Data->NameSize);
54  UPDATE_LAST(CountersLast, Data->Counters + Data->NumCounters);
55#undef UPDATE_LAST
56}
57
58__attribute__((visibility("hidden")))
59const __llvm_profile_data *__llvm_profile_data_begin(void) {
60  return DataFirst;
61}
62__attribute__((visibility("hidden")))
63const __llvm_profile_data *__llvm_profile_data_end(void) {
64  return DataLast;
65}
66__attribute__((visibility("hidden")))
67const char *__llvm_profile_names_begin(void) { return NamesFirst; }
68__attribute__((visibility("hidden")))
69const char *__llvm_profile_names_end(void) { return NamesLast; }
70__attribute__((visibility("hidden")))
71uint64_t *__llvm_profile_counters_begin(void) { return CountersFirst; }
72__attribute__((visibility("hidden")))
73uint64_t *__llvm_profile_counters_end(void) { return CountersLast; }
74#endif
75