a8b6bed223
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
//===-- DWARFDebugLoc.cpp -------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "DWARFDebugLoc.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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void DWARFDebugLoc::dump(raw_ostream &OS) const {
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for (LocationLists::const_iterator I = Locations.begin(), E = Locations.end(); I != E; ++I) {
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OS << format("0x%8.8x: ", I->Offset);
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const unsigned Indent = 12;
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for (SmallVectorImpl<Entry>::const_iterator I2 = I->Entries.begin(), E2 = I->Entries.end(); I2 != E2; ++I2) {
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if (I2 != I->Entries.begin())
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OS.indent(Indent);
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OS << "Beginning address offset: " << format("0x%016" PRIx64, I2->Begin)
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<< '\n';
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OS.indent(Indent) << " Ending address offset: "
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<< format("0x%016" PRIx64, I2->End) << '\n';
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OS.indent(Indent) << " Location description: ";
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for (SmallVectorImpl<unsigned char>::const_iterator I3 = I2->Loc.begin(), E3 = I2->Loc.end(); I3 != E3; ++I3) {
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OS << format("%2.2x ", *I3);
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}
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OS << "\n\n";
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}
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}
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}
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void DWARFDebugLoc::parse(DataExtractor data, unsigned AddressSize) {
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uint32_t Offset = 0;
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while (data.isValidOffset(Offset)) {
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Locations.resize(Locations.size() + 1);
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LocationList &Loc = Locations.back();
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Loc.Offset = Offset;
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// 2.6.2 Location Lists
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// A location list entry consists of:
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while (true) {
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Entry E;
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RelocAddrMap::const_iterator AI = RelocMap.find(Offset);
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// 1. A beginning address offset. ...
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E.Begin = data.getUnsigned(&Offset, AddressSize);
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if (AI != RelocMap.end())
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E.Begin += AI->second.second;
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AI = RelocMap.find(Offset);
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// 2. An ending address offset. ...
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E.End = data.getUnsigned(&Offset, AddressSize);
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if (AI != RelocMap.end())
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E.End += AI->second.second;
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// The end of any given location list is marked by an end of list entry,
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// which consists of a 0 for the beginning address offset and a 0 for the
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// ending address offset.
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if (E.Begin == 0 && E.End == 0)
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break;
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unsigned Bytes = data.getU16(&Offset);
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// A single location description describing the location of the object...
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StringRef str = data.getData().substr(Offset, Bytes);
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Offset += Bytes;
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E.Loc.reserve(str.size());
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std::copy(str.begin(), str.end(), std::back_inserter(E.Loc));
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Loc.Entries.push_back(llvm_move(E));
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}
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}
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}
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