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