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//===-- sanitizer_procmaps_haiku.cpp --------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Information about the process mappings
// (Haiku-specific parts).
//===----------------------------------------------------------------------===//
#include "sanitizer_platform.h"
#if SANITIZER_HAIKU
# include "sanitizer_common.h"
# include "sanitizer_procmaps.h"
# include <kernel/OS.h>
namespace __sanitizer {
void MemoryMappedSegment::AddAddressRanges(LoadedModule *module) {
// data_ should be unused on this platform
CHECK(!data_);
module->addAddressRange(start, end, IsExecutable(), IsWritable());
}
MemoryMappingLayout::MemoryMappingLayout(bool) { Reset(); }
void MemoryMappingLayout::Reset() { data_.cookie = 0; }
MemoryMappingLayout::~MemoryMappingLayout() {}
// static
void MemoryMappingLayout::CacheMemoryMappings() {}
bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
area_info info;
if (get_next_area_info(B_CURRENT_TEAM, &data_.cookie, &info) != B_OK)
return false;
segment->start = (uptr)info.address;
segment->end = (uptr)info.address + info.size;
segment->offset = 0;
segment->protection = 0;
if (info.protection & B_READ_AREA)
segment->protection |= kProtectionRead;
if (info.protection & B_WRITE_AREA)
segment->protection |= kProtectionWrite;
if (info.protection & B_EXECUTE_AREA)
segment->protection |= kProtectionExecute;
if (segment->filename) {
uptr len = Min((uptr)B_OS_NAME_LENGTH, segment->filename_size - 1);
internal_strncpy(segment->filename, info.name, len);
segment->filename[len] = 0;
}
return true;
}
bool MemoryMappingLayout::Error() const { return false; }
void MemoryMappingLayout::DumpListOfModules(
InternalMmapVectorNoCtor<LoadedModule> *modules) {
Reset();
InternalMmapVector<char> module_name(kMaxPathLength);
MemoryMappedSegment segment(module_name.data(), module_name.size());
for (uptr i = 0; Next(&segment); i++) {
const char *cur_name = segment.filename;
if (cur_name[0] == '\0')
continue;
// Don't subtract 'cur_beg' from the first entry:
// * If a binary is compiled w/o -pie, then the first entry in
// process maps is likely the binary itself (all dynamic libs
// are mapped higher in address space). For such a binary,
// instruction offset in binary coincides with the actual
// instruction address in virtual memory (as code section
// is mapped to a fixed memory range).
// * If a binary is compiled with -pie, all the modules are
// mapped high at address space (in particular, higher than
// shadow memory of the tool), so the module can't be the
// first entry.
uptr base_address = (i ? segment.start : 0) - segment.offset;
LoadedModule cur_module;
cur_module.set(cur_name, base_address);
segment.AddAddressRanges(&cur_module);
modules->push_back(cur_module);
}
}
void GetMemoryProfile(fill_profile_f cb, uptr *stats) {}
} // namespace __sanitizer
#endif
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