13df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie//===-- DWARFDebugLoc.cpp -------------------------------------------------===// 23df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// 33df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// The LLVM Compiler Infrastructure 43df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// 53df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// This file is distributed under the University of Illinois Open Source 63df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// License. See LICENSE.TXT for details. 73df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie// 83df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie//===----------------------------------------------------------------------===// 93df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 103df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie#include "DWARFDebugLoc.h" 113df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie#include "llvm/Support/Compiler.h" 123df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie#include "llvm/Support/Format.h" 133df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie#include "llvm/Support/raw_ostream.h" 1436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/Support/Dwarf.h" 153df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 163df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikieusing namespace llvm; 173df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 183df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikievoid DWARFDebugLoc::dump(raw_ostream &OS) const { 1936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (const LocationList &L : Locations) { 2036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << format("0x%8.8x: ", L.Offset); 213df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie const unsigned Indent = 12; 2236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (const Entry &E : L.Entries) { 2336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (&E != L.Entries.begin()) 243df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie OS.indent(Indent); 2536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << "Beginning address offset: " << format("0x%016" PRIx64, E.Begin) 263df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie << '\n'; 270812304ad8c8eded9785acff3194e3f5058e5dbfDavid Blaikie OS.indent(Indent) << " Ending address offset: " 2836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines << format("0x%016" PRIx64, E.End) << '\n'; 290812304ad8c8eded9785acff3194e3f5058e5dbfDavid Blaikie OS.indent(Indent) << " Location description: "; 3036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (unsigned char Loc : E.Loc) { 3136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << format("%2.2x ", Loc); 323df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie } 333df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie OS << "\n\n"; 343df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie } 353df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie } 363df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie} 373df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 383df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikievoid DWARFDebugLoc::parse(DataExtractor data, unsigned AddressSize) { 393df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie uint32_t Offset = 0; 4036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines while (data.isValidOffset(Offset+AddressSize-1)) { 413df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie Locations.resize(Locations.size() + 1); 423df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie LocationList &Loc = Locations.back(); 433df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie Loc.Offset = Offset; 443df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // 2.6.2 Location Lists 453df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // A location list entry consists of: 463df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie while (true) { 473df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie Entry E; 483df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie RelocAddrMap::const_iterator AI = RelocMap.find(Offset); 493df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // 1. A beginning address offset. ... 503df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie E.Begin = data.getUnsigned(&Offset, AddressSize); 513df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie if (AI != RelocMap.end()) 523df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie E.Begin += AI->second.second; 533df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 543df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie AI = RelocMap.find(Offset); 553df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // 2. An ending address offset. ... 563df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie E.End = data.getUnsigned(&Offset, AddressSize); 573df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie if (AI != RelocMap.end()) 583df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie E.End += AI->second.second; 593df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 603df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // The end of any given location list is marked by an end of list entry, 613df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // which consists of a 0 for the beginning address offset and a 0 for the 623df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // ending address offset. 633df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie if (E.Begin == 0 && E.End == 0) 643df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie break; 653df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie 663df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie unsigned Bytes = data.getU16(&Offset); 673df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie // A single location description describing the location of the object... 683df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie StringRef str = data.getData().substr(Offset, Bytes); 693df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie Offset += Bytes; 703df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie E.Loc.reserve(str.size()); 713df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie std::copy(str.begin(), str.end(), std::back_inserter(E.Loc)); 7236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Loc.Entries.push_back(std::move(E)); 733df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie } 743df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie } 7536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (data.isValidOffset(Offset)) 7636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines llvm::errs() << "error: failed to consume entire .debug_loc section\n"; 773df7d2f70bb316ebeec8a8c862b3da5386fbb145David Blaikie} 7836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 7936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesvoid DWARFDebugLocDWO::parse(DataExtractor data) { 8036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines uint32_t Offset = 0; 8136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines while (data.isValidOffset(Offset)) { 8236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Locations.resize(Locations.size() + 1); 8336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines LocationList &Loc = Locations.back(); 8436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Loc.Offset = Offset; 8536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines dwarf::LocationListEntry Kind; 8636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines while ((Kind = static_cast<dwarf::LocationListEntry>( 8736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines data.getU8(&Offset))) != dwarf::DW_LLE_end_of_list_entry) { 8836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 8936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (Kind != dwarf::DW_LLE_start_length_entry) { 9036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines llvm::errs() << "error: dumping support for LLE of kind " << (int)Kind 9136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines << " not implemented\n"; 9236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return; 9336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 9436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 9536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Entry E; 9636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 9736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines E.Start = data.getULEB128(&Offset); 9836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines E.Length = data.getU32(&Offset); 9936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 10036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Bytes = data.getU16(&Offset); 10136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // A single location description describing the location of the object... 10236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines StringRef str = data.getData().substr(Offset, Bytes); 10336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Offset += Bytes; 10436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines E.Loc.resize(str.size()); 10536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::copy(str.begin(), str.end(), E.Loc.begin()); 10636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 10736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Loc.Entries.push_back(std::move(E)); 10836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 10936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 11036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 11136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 11236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesvoid DWARFDebugLocDWO::dump(raw_ostream &OS) const { 11336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (const LocationList &L : Locations) { 11436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << format("0x%8.8x: ", L.Offset); 11536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const unsigned Indent = 12; 11636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (const Entry &E : L.Entries) { 11736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (&E != L.Entries.begin()) 11836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS.indent(Indent); 11936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << "Beginning address index: " << E.Start << '\n'; 12036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS.indent(Indent) << " Length: " << E.Length << '\n'; 12136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS.indent(Indent) << " Location description: "; 12236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (unsigned char Loc : E.Loc) 12336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << format("%2.2x ", Loc); 12436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OS << "\n\n"; 12536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 12636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 12736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 12836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 129