1//===-- sanitizer_procmaps_haiku.cpp --------------------------------------===//
 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// Information about the process mappings
10// (Haiku-specific parts).
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_platform.h"
14#if SANITIZER_HAIKU
15#  include "sanitizer_common.h"
16#  include "sanitizer_procmaps.h"
17
18#  include <kernel/OS.h>
19
20namespace __sanitizer {
21
22void MemoryMappedSegment::AddAddressRanges(LoadedModule *module) {
23  // data_ should be unused on this platform
24  CHECK(!data_);
25  module->addAddressRange(start, end, IsExecutable(), IsWritable());
26}
27
28MemoryMappingLayout::MemoryMappingLayout(bool) { Reset(); }
29
30void MemoryMappingLayout::Reset() { data_.cookie = 0; }
31
32MemoryMappingLayout::~MemoryMappingLayout() {}
33
34// static
35void MemoryMappingLayout::CacheMemoryMappings() {}
36
37bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
38  area_info info;
39  if (get_next_area_info(B_CURRENT_TEAM, &data_.cookie, &info) != B_OK)
40    return false;
41
42  segment->start = (uptr)info.address;
43  segment->end = (uptr)info.address + info.size;
44  segment->offset = 0;
45  segment->protection = 0;
46  if (info.protection & B_READ_AREA)
47    segment->protection |= kProtectionRead;
48  if (info.protection & B_WRITE_AREA)
49    segment->protection |= kProtectionWrite;
50  if (info.protection & B_EXECUTE_AREA)
51    segment->protection |= kProtectionExecute;
52  if (segment->filename) {
53    uptr len = Min((uptr)B_OS_NAME_LENGTH, segment->filename_size - 1);
54    internal_strncpy(segment->filename, info.name, len);
55    segment->filename[len] = 0;
56  }
57  return true;
58}
59
60bool MemoryMappingLayout::Error() const { return false; }
61
62void MemoryMappingLayout::DumpListOfModules(
63    InternalMmapVectorNoCtor<LoadedModule> *modules) {
64  Reset();
65  InternalMmapVector<char> module_name(kMaxPathLength);
66  MemoryMappedSegment segment(module_name.data(), module_name.size());
67  for (uptr i = 0; Next(&segment); i++) {
68    const char *cur_name = segment.filename;
69    if (cur_name[0] == '\0')
70      continue;
71    // Don't subtract 'cur_beg' from the first entry:
72    // * If a binary is compiled w/o -pie, then the first entry in
73    //   process maps is likely the binary itself (all dynamic libs
74    //   are mapped higher in address space). For such a binary,
75    //   instruction offset in binary coincides with the actual
76    //   instruction address in virtual memory (as code section
77    //   is mapped to a fixed memory range).
78    // * If a binary is compiled with -pie, all the modules are
79    //   mapped high at address space (in particular, higher than
80    //   shadow memory of the tool), so the module can't be the
81    //   first entry.
82    uptr base_address = (i ? segment.start : 0) - segment.offset;
83    LoadedModule cur_module;
84    cur_module.set(cur_name, base_address);
85    segment.AddAddressRanges(&cur_module);
86    modules->push_back(cur_module);
87  }
88}
89
90void GetMemoryProfile(fill_profile_f cb, uptr *stats) {}
91
92}  // namespace __sanitizer
93
94#endif