//===-- DWARFDebugRangesList.cpp ------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "llvm/DebugInfo/DWARFDebugRangeList.h" #include "llvm/Support/Format.h" #include "llvm/Support/raw_ostream.h" using namespace llvm; void DWARFDebugRangeList::clear() { Offset = -1U; AddressSize = 0; Entries.clear(); } bool DWARFDebugRangeList::extract(DataExtractor data, uint32_t *offset_ptr) { clear(); if (!data.isValidOffset(*offset_ptr)) return false; AddressSize = data.getAddressSize(); if (AddressSize != 4 && AddressSize != 8) return false; Offset = *offset_ptr; while (true) { RangeListEntry entry; uint32_t prev_offset = *offset_ptr; entry.StartAddress = data.getAddress(offset_ptr); entry.EndAddress = data.getAddress(offset_ptr); // Check that both values were extracted correctly. if (*offset_ptr != prev_offset + 2 * AddressSize) { clear(); return false; } if (entry.isEndOfListEntry()) break; Entries.push_back(entry); } return true; } void DWARFDebugRangeList::dump(raw_ostream &OS) const { for (const RangeListEntry &RLE : Entries) { const char *format_str = (AddressSize == 4 ? "%08x %08" PRIx64 " %08" PRIx64 "\n" : "%08x %016" PRIx64 " %016" PRIx64 "\n"); OS << format(format_str, Offset, RLE.StartAddress, RLE.EndAddress); } OS << format("%08x \n", Offset); } DWARFAddressRangesVector DWARFDebugRangeList::getAbsoluteRanges(uint64_t BaseAddress) const { DWARFAddressRangesVector Res; for (const RangeListEntry &RLE : Entries) { if (RLE.isBaseAddressSelectionEntry(AddressSize)) { BaseAddress = RLE.EndAddress; } else { Res.push_back(std::make_pair(BaseAddress + RLE.StartAddress, BaseAddress + RLE.EndAddress)); } } return Res; }