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__) && !defined(__linux__) && !defined(__FreeBSD__)
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 */
29COMPILER_RT_VISIBILITY
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->NamePtr;
37    NamesLast = (const char *)Data->NamePtr + Data->NameSize;
38    CountersFirst = Data->CounterPtr;
39    CountersLast = (uint64_t *)Data->CounterPtr + Data->NumCounters;
40    return;
41  }
42
43#define UPDATE_FIRST(First, New) First = New < First ? New : First
44  UPDATE_FIRST(DataFirst, Data);
45  UPDATE_FIRST(NamesFirst, (const char *)Data->NamePtr);
46  UPDATE_FIRST(CountersFirst, (uint64_t *)Data->CounterPtr);
47#undef UPDATE_FIRST
48
49#define UPDATE_LAST(Last, New) Last = New > Last ? New : Last
50  UPDATE_LAST(DataLast, Data + 1);
51  UPDATE_LAST(NamesLast, (const char *)Data->NamePtr + Data->NameSize);
52  UPDATE_LAST(CountersLast, (uint64_t *)Data->CounterPtr + Data->NumCounters);
53#undef UPDATE_LAST
54}
55
56COMPILER_RT_VISIBILITY
57const __llvm_profile_data *__llvm_profile_begin_data(void) { return DataFirst; }
58COMPILER_RT_VISIBILITY
59const __llvm_profile_data *__llvm_profile_end_data(void) { return DataLast; }
60COMPILER_RT_VISIBILITY
61const char *__llvm_profile_begin_names(void) { return NamesFirst; }
62COMPILER_RT_VISIBILITY
63const char *__llvm_profile_end_names(void) { return NamesLast; }
64COMPILER_RT_VISIBILITY
65uint64_t *__llvm_profile_begin_counters(void) { return CountersFirst; }
66COMPILER_RT_VISIBILITY
67uint64_t *__llvm_profile_end_counters(void) { return CountersLast; }
68#endif
69